| Index: third_party/WebKit/WebCore/page/EventHandler.cpp
|
| ===================================================================
|
| --- third_party/WebKit/WebCore/page/EventHandler.cpp (revision 9310)
|
| +++ third_party/WebKit/WebCore/page/EventHandler.cpp (working copy)
|
| @@ -1,2321 +1,2323 @@
|
| -/*
|
| - * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
|
| - * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
|
| - *
|
| - * Redistribution and use in source and binary forms, with or without
|
| - * modification, are permitted provided that the following conditions
|
| - * are met:
|
| - * 1. Redistributions of source code must retain the above copyright
|
| - * notice, this list of conditions and the following disclaimer.
|
| - * 2. Redistributions in binary form must reproduce the above copyright
|
| - * notice, this list of conditions and the following disclaimer in the
|
| - * documentation and/or other materials provided with the distribution.
|
| - *
|
| - * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
|
| - * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
| - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
|
| - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
| - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
| - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
| - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
| - * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| - */
|
| -
|
| -#include "config.h"
|
| -#include "EventHandler.h"
|
| -
|
| -#include "AXObjectCache.h"
|
| -#include "CachedImage.h"
|
| -#include "ChromeClient.h"
|
| -#include "Cursor.h"
|
| -#include "Document.h"
|
| -#include "DragController.h"
|
| -#include "Editor.h"
|
| -#include "EventNames.h"
|
| -#include "FloatPoint.h"
|
| -#include "FloatRect.h"
|
| -#include "FocusController.h"
|
| -#include "Frame.h"
|
| -#include "FrameLoader.h"
|
| -#include "FrameTree.h"
|
| -#include "FrameView.h"
|
| -#include "HitTestRequest.h"
|
| -#include "HitTestResult.h"
|
| -#include "HTMLFrameSetElement.h"
|
| -#include "HTMLFrameElementBase.h"
|
| -#include "HTMLInputElement.h"
|
| -#include "HTMLNames.h"
|
| -#include "Image.h"
|
| -#include "InspectorController.h"
|
| -#include "KeyboardEvent.h"
|
| -#include "MouseEvent.h"
|
| -#include "MouseEventWithHitTestResults.h"
|
| -#include "Page.h"
|
| -#include "PlatformKeyboardEvent.h"
|
| -#include "PlatformWheelEvent.h"
|
| -#include "RenderFrameSet.h"
|
| -#include "RenderWidget.h"
|
| -#include "RenderView.h"
|
| -#include "Scrollbar.h"
|
| -#include "SelectionController.h"
|
| -#include "Settings.h"
|
| -#include "TextEvent.h"
|
| -#include <wtf/StdLibExtras.h>
|
| -
|
| -#if ENABLE(SVG)
|
| -#include "SVGDocument.h"
|
| -#include "SVGElementInstance.h"
|
| -#include "SVGNames.h"
|
| -#include "SVGUseElement.h"
|
| -#endif
|
| -
|
| -namespace WebCore {
|
| -
|
| -using namespace HTMLNames;
|
| -
|
| -// The link drag hysteresis is much larger than the others because there
|
| -// needs to be enough space to cancel the link press without starting a link drag,
|
| -// and because dragging links is rare.
|
| -const int LinkDragHysteresis = 40;
|
| -const int ImageDragHysteresis = 5;
|
| -const int TextDragHysteresis = 3;
|
| -const int GeneralDragHysteresis = 3;
|
| -
|
| -// Match key code of composition keydown event on windows.
|
| -// IE sends VK_PROCESSKEY which has value 229;
|
| -const int CompositionEventKeyCode = 229;
|
| -
|
| -#if ENABLE(SVG)
|
| -using namespace SVGNames;
|
| -#endif
|
| -
|
| -// When the autoscroll or the panScroll is triggered when do the scroll every 0.05s to make it smooth
|
| -const double autoscrollInterval = 0.05;
|
| -
|
| -static Frame* subframeForTargetNode(Node*);
|
| -static Frame* subframeForHitTestResult(const MouseEventWithHitTestResults&);
|
| -
|
| -static inline void scrollAndAcceptEvent(float delta, ScrollDirection positiveDirection, ScrollDirection negativeDirection, PlatformWheelEvent& e, Node* node)
|
| -{
|
| - if (!delta)
|
| - return;
|
| -
|
| - // Find the nearest enclosing box.
|
| - RenderBox* enclosingBox = node->renderer()->enclosingBox();
|
| -
|
| - if (e.granularity() == ScrollByPageWheelEvent) {
|
| - if (enclosingBox->scroll(delta < 0 ? negativeDirection : positiveDirection, ScrollByPage, 1))
|
| - e.accept();
|
| - return;
|
| - }
|
| - float pixelsToScroll = delta > 0 ? delta : -delta;
|
| - if (e.granularity() == ScrollByLineWheelEvent)
|
| - pixelsToScroll *= cMouseWheelPixelsPerLineStep;
|
| - if (enclosingBox->scroll(delta < 0 ? negativeDirection : positiveDirection, ScrollByPixel, pixelsToScroll))
|
| - e.accept();
|
| -}
|
| -
|
| -EventHandler::EventHandler(Frame* frame)
|
| - : m_frame(frame)
|
| - , m_mousePressed(false)
|
| - , m_mouseDownMayStartSelect(false)
|
| - , m_mouseDownMayStartDrag(false)
|
| - , m_mouseDownWasSingleClickInSelection(false)
|
| - , m_beganSelectingText(false)
|
| - , m_panScrollInProgress(false)
|
| - , m_hoverTimer(this, &EventHandler::hoverTimerFired)
|
| - , m_autoscrollTimer(this, &EventHandler::autoscrollTimerFired)
|
| - , m_autoscrollRenderer(0)
|
| - , m_autoscrollInProgress(false)
|
| - , m_mouseDownMayStartAutoscroll(false)
|
| - , m_mouseDownWasInSubframe(false)
|
| -#if ENABLE(SVG)
|
| - , m_svgPan(false)
|
| -#endif
|
| - , m_resizeLayer(0)
|
| - , m_capturingMouseEventsNode(0)
|
| - , m_clickCount(0)
|
| - , m_mouseDownTimestamp(0)
|
| - , m_pendingFrameUnloadEventCount(0)
|
| - , m_pendingFrameBeforeUnloadEventCount(0)
|
| -#if PLATFORM(MAC)
|
| - , m_mouseDownView(nil)
|
| - , m_sendingEventToSubview(false)
|
| - , m_activationEventNumber(0)
|
| -#endif
|
| -{
|
| -}
|
| -
|
| -EventHandler::~EventHandler()
|
| -{
|
| -}
|
| -
|
| -EventHandler::EventHandlerDragState& EventHandler::dragState()
|
| -{
|
| - DEFINE_STATIC_LOCAL(EventHandlerDragState, state, ());
|
| - return state;
|
| -}
|
| -
|
| -void EventHandler::clear()
|
| -{
|
| - m_hoverTimer.stop();
|
| - m_resizeLayer = 0;
|
| - m_nodeUnderMouse = 0;
|
| - m_lastNodeUnderMouse = 0;
|
| -#if ENABLE(SVG)
|
| - m_instanceUnderMouse = 0;
|
| - m_lastInstanceUnderMouse = 0;
|
| -#endif
|
| - m_lastMouseMoveEventSubframe = 0;
|
| - m_lastScrollbarUnderMouse = 0;
|
| - m_clickCount = 0;
|
| - m_clickNode = 0;
|
| - m_frameSetBeingResized = 0;
|
| - m_dragTarget = 0;
|
| - m_currentMousePosition = IntPoint();
|
| - m_mousePressNode = 0;
|
| - m_mousePressed = false;
|
| - m_capturingMouseEventsNode = 0;
|
| -}
|
| -
|
| -void EventHandler::selectClosestWordFromMouseEvent(const MouseEventWithHitTestResults& result)
|
| -{
|
| - Node* innerNode = result.targetNode();
|
| - Selection newSelection;
|
| -
|
| - if (innerNode && innerNode->renderer() && m_mouseDownMayStartSelect) {
|
| - VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
|
| - if (pos.isNotNull()) {
|
| - newSelection = Selection(pos);
|
| - newSelection.expandUsingGranularity(WordGranularity);
|
| - }
|
| -
|
| - if (newSelection.isRange()) {
|
| - m_frame->setSelectionGranularity(WordGranularity);
|
| - m_beganSelectingText = true;
|
| - if (result.event().clickCount() == 2 && m_frame->editor()->isSelectTrailingWhitespaceEnabled())
|
| - newSelection.appendTrailingWhitespace();
|
| - }
|
| -
|
| - if (m_frame->shouldChangeSelection(newSelection))
|
| - m_frame->selection()->setSelection(newSelection);
|
| - }
|
| -}
|
| -
|
| -void EventHandler::selectClosestWordOrLinkFromMouseEvent(const MouseEventWithHitTestResults& result)
|
| -{
|
| - if (!result.hitTestResult().isLiveLink())
|
| - return selectClosestWordFromMouseEvent(result);
|
| -
|
| - Node* innerNode = result.targetNode();
|
| -
|
| - if (innerNode && innerNode->renderer() && m_mouseDownMayStartSelect) {
|
| - Selection newSelection;
|
| - Element* URLElement = result.hitTestResult().URLElement();
|
| - VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
|
| - if (pos.isNotNull() && pos.deepEquivalent().node()->isDescendantOf(URLElement))
|
| - newSelection = Selection::selectionFromContentsOfNode(URLElement);
|
| -
|
| - if (newSelection.isRange()) {
|
| - m_frame->setSelectionGranularity(WordGranularity);
|
| - m_beganSelectingText = true;
|
| - }
|
| -
|
| - if (m_frame->shouldChangeSelection(newSelection))
|
| - m_frame->selection()->setSelection(newSelection);
|
| - }
|
| -}
|
| -
|
| -bool EventHandler::handleMousePressEventDoubleClick(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (event.event().button() != LeftButton)
|
| - return false;
|
| -
|
| - if (m_frame->selection()->isRange())
|
| - // A double-click when range is already selected
|
| - // should not change the selection. So, do not call
|
| - // selectClosestWordFromMouseEvent, but do set
|
| - // m_beganSelectingText to prevent handleMouseReleaseEvent
|
| - // from setting caret selection.
|
| - m_beganSelectingText = true;
|
| - else
|
| - selectClosestWordFromMouseEvent(event);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::handleMousePressEventTripleClick(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (event.event().button() != LeftButton)
|
| - return false;
|
| -
|
| - Node* innerNode = event.targetNode();
|
| - if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
|
| - return false;
|
| -
|
| - Selection newSelection;
|
| - VisiblePosition pos(innerNode->renderer()->positionForPoint(event.localPoint()));
|
| - if (pos.isNotNull()) {
|
| - newSelection = Selection(pos);
|
| - newSelection.expandUsingGranularity(ParagraphGranularity);
|
| - }
|
| - if (newSelection.isRange()) {
|
| - m_frame->setSelectionGranularity(ParagraphGranularity);
|
| - m_beganSelectingText = true;
|
| - }
|
| -
|
| - if (m_frame->shouldChangeSelection(newSelection))
|
| - m_frame->selection()->setSelection(newSelection);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::handleMousePressEventSingleClick(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (event.event().button() != LeftButton)
|
| - return false;
|
| -
|
| - Node* innerNode = event.targetNode();
|
| - if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
|
| - return false;
|
| -
|
| - // Extend the selection if the Shift key is down, unless the click is in a link.
|
| - bool extendSelection = event.event().shiftKey() && !event.isOverLink();
|
| -
|
| - // Don't restart the selection when the mouse is pressed on an
|
| - // existing selection so we can allow for text dragging.
|
| - IntPoint vPoint = m_frame->view()->windowToContents(event.event().pos());
|
| - if (!extendSelection && m_frame->selection()->contains(vPoint)) {
|
| - m_mouseDownWasSingleClickInSelection = true;
|
| - return false;
|
| - }
|
| -
|
| - VisiblePosition visiblePos(innerNode->renderer()->positionForPoint(event.localPoint()));
|
| - if (visiblePos.isNull())
|
| - visiblePos = VisiblePosition(innerNode, 0, DOWNSTREAM);
|
| - Position pos = visiblePos.deepEquivalent();
|
| -
|
| - Selection newSelection = m_frame->selection()->selection();
|
| - if (extendSelection && newSelection.isCaretOrRange()) {
|
| - m_frame->selection()->setLastChangeWasHorizontalExtension(false);
|
| -
|
| - // See <rdar://problem/3668157> REGRESSION (Mail): shift-click deselects when selection
|
| - // was created right-to-left
|
| - Position start = newSelection.start();
|
| - Position end = newSelection.end();
|
| - short before = Range::compareBoundaryPoints(pos.node(), pos.offset(), start.node(), start.offset());
|
| - if (before <= 0)
|
| - newSelection = Selection(pos, end);
|
| - else
|
| - newSelection = Selection(start, pos);
|
| -
|
| - if (m_frame->selectionGranularity() != CharacterGranularity)
|
| - newSelection.expandUsingGranularity(m_frame->selectionGranularity());
|
| - m_beganSelectingText = true;
|
| - } else {
|
| - newSelection = Selection(visiblePos);
|
| - m_frame->setSelectionGranularity(CharacterGranularity);
|
| - }
|
| -
|
| - if (m_frame->shouldChangeSelection(newSelection))
|
| - m_frame->selection()->setSelection(newSelection);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::handleMousePressEvent(const MouseEventWithHitTestResults& event)
|
| -{
|
| - // Reset drag state.
|
| - dragState().m_dragSrc = 0;
|
| -
|
| - bool singleClick = event.event().clickCount() <= 1;
|
| -
|
| - // If we got the event back, that must mean it wasn't prevented,
|
| - // so it's allowed to start a drag or selection.
|
| - m_mouseDownMayStartSelect = canMouseDownStartSelect(event.targetNode());
|
| -
|
| - // Careful that the drag starting logic stays in sync with eventMayStartDrag()
|
| - m_mouseDownMayStartDrag = singleClick;
|
| -
|
| - m_mouseDownWasSingleClickInSelection = false;
|
| -
|
| - if (event.isOverWidget() && passWidgetMouseDownEventToWidget(event))
|
| - return true;
|
| -
|
| -#if ENABLE(SVG)
|
| - if (m_frame->document()->isSVGDocument() &&
|
| - static_cast<SVGDocument*>(m_frame->document())->zoomAndPanEnabled()) {
|
| - if (event.event().shiftKey() && singleClick) {
|
| - m_svgPan = true;
|
| - static_cast<SVGDocument*>(m_frame->document())->startPan(event.event().pos());
|
| - return true;
|
| - }
|
| - }
|
| -#endif
|
| -
|
| - // We don't do this at the start of mouse down handling,
|
| - // because we don't want to do it until we know we didn't hit a widget.
|
| - if (singleClick)
|
| - focusDocumentView();
|
| -
|
| - Node* innerNode = event.targetNode();
|
| -
|
| - m_mousePressNode = innerNode;
|
| - m_dragStartPos = event.event().pos();
|
| -
|
| - bool swallowEvent = false;
|
| - if (event.event().button() == LeftButton || event.event().button() == MiddleButton) {
|
| - m_frame->selection()->setCaretBlinkingSuspended(true);
|
| - m_mousePressed = true;
|
| - m_beganSelectingText = false;
|
| -
|
| - if (event.event().clickCount() == 2)
|
| - swallowEvent = handleMousePressEventDoubleClick(event);
|
| - else if (event.event().clickCount() >= 3)
|
| - swallowEvent = handleMousePressEventTripleClick(event);
|
| - else
|
| - swallowEvent = handleMousePressEventSingleClick(event);
|
| - }
|
| -
|
| - m_mouseDownMayStartAutoscroll = m_mouseDownMayStartSelect ||
|
| - (m_mousePressNode && m_mousePressNode->renderBox() && m_mousePressNode->renderBox()->canBeProgramaticallyScrolled(true));
|
| -
|
| - return swallowEvent;
|
| -}
|
| -
|
| -bool EventHandler::handleMouseDraggedEvent(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (handleDrag(event))
|
| - return true;
|
| -
|
| - if (!m_mousePressed)
|
| - return false;
|
| -
|
| - Node* targetNode = event.targetNode();
|
| - if (event.event().button() != LeftButton || !targetNode || !targetNode->renderer())
|
| - return false;
|
| -
|
| -#if PLATFORM(MAC) // FIXME: Why does this assertion fire on other platforms?
|
| - ASSERT(m_mouseDownMayStartSelect || m_mouseDownMayStartAutoscroll);
|
| -#endif
|
| -
|
| - m_mouseDownMayStartDrag = false;
|
| -
|
| - if (m_mouseDownMayStartAutoscroll && !m_panScrollInProgress) {
|
| - // If the selection is contained in a layer that can scroll, that layer should handle the autoscroll
|
| - // Otherwise, let the bridge handle it so the view can scroll itself.
|
| - RenderObject* renderer = targetNode->renderer();
|
| - while (renderer && (!renderer->isBox() || !toRenderBox(renderer)->canBeProgramaticallyScrolled(false))) {
|
| - if (!renderer->parent() && renderer->node() == renderer->document() && renderer->document()->ownerElement())
|
| - renderer = renderer->document()->ownerElement()->renderer();
|
| - else
|
| - renderer = renderer->parent();
|
| - }
|
| -
|
| - if (renderer) {
|
| - m_autoscrollInProgress = true;
|
| - handleAutoscroll(renderer);
|
| - }
|
| -
|
| - m_mouseDownMayStartAutoscroll = false;
|
| - }
|
| -
|
| - updateSelectionForMouseDrag(targetNode, event.localPoint());
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::eventMayStartDrag(const PlatformMouseEvent& event) const
|
| -{
|
| - // This is a pre-flight check of whether the event might lead to a drag being started. Be careful
|
| - // that its logic needs to stay in sync with handleMouseMoveEvent() and the way we setMouseDownMayStartDrag
|
| - // in handleMousePressEvent
|
| -
|
| - if (!m_frame->contentRenderer() || !m_frame->contentRenderer()->hasLayer()
|
| - || event.button() != LeftButton || event.clickCount() != 1)
|
| - return false;
|
| -
|
| - bool DHTMLFlag;
|
| - bool UAFlag;
|
| - allowDHTMLDrag(DHTMLFlag, UAFlag);
|
| - if (!DHTMLFlag && !UAFlag)
|
| - return false;
|
| -
|
| - HitTestRequest request(HitTestRequest::ReadOnly);
|
| - HitTestResult result(m_frame->view()->windowToContents(event.pos()));
|
| - m_frame->contentRenderer()->layer()->hitTest(request, result);
|
| - bool srcIsDHTML;
|
| - return result.innerNode() && result.innerNode()->renderer()->draggableNode(DHTMLFlag, UAFlag, result.point().x(), result.point().y(), srcIsDHTML);
|
| -}
|
| -
|
| -void EventHandler::updateSelectionForMouseDrag()
|
| -{
|
| - FrameView* view = m_frame->view();
|
| - if (!view)
|
| - return;
|
| - RenderView* renderer = m_frame->contentRenderer();
|
| - if (!renderer)
|
| - return;
|
| - RenderLayer* layer = renderer->layer();
|
| - if (!layer)
|
| - return;
|
| -
|
| - HitTestRequest request(HitTestRequest::ReadOnly |
|
| - HitTestRequest::Active |
|
| - HitTestRequest::MouseMove);
|
| - HitTestResult result(view->windowToContents(m_currentMousePosition));
|
| - layer->hitTest(request, result);
|
| - updateSelectionForMouseDrag(result.innerNode(), result.localPoint());
|
| -}
|
| -
|
| -void EventHandler::updateSelectionForMouseDrag(Node* targetNode, const IntPoint& localPoint)
|
| -{
|
| - if (!m_mouseDownMayStartSelect)
|
| - return;
|
| -
|
| - if (!targetNode)
|
| - return;
|
| -
|
| - RenderObject* targetRenderer = targetNode->renderer();
|
| - if (!targetRenderer)
|
| - return;
|
| -
|
| - if (!canMouseDragExtendSelect(targetNode))
|
| - return;
|
| -
|
| - VisiblePosition targetPosition(targetRenderer->positionForPoint(localPoint));
|
| -
|
| - // Don't modify the selection if we're not on a node.
|
| - if (targetPosition.isNull())
|
| - return;
|
| -
|
| - // Restart the selection if this is the first mouse move. This work is usually
|
| - // done in handleMousePressEvent, but not if the mouse press was on an existing selection.
|
| - Selection newSelection = m_frame->selection()->selection();
|
| -
|
| -#if ENABLE(SVG)
|
| - // Special case to limit selection to the containing block for SVG text.
|
| - // FIXME: Isn't there a better non-SVG-specific way to do this?
|
| - if (Node* selectionBaseNode = newSelection.base().node())
|
| - if (RenderObject* selectionBaseRenderer = selectionBaseNode->renderer())
|
| - if (selectionBaseRenderer->isSVGText())
|
| - if (targetNode->renderer()->containingBlock() != selectionBaseRenderer->containingBlock())
|
| - return;
|
| -#endif
|
| -
|
| - if (!m_beganSelectingText) {
|
| - m_beganSelectingText = true;
|
| - newSelection = Selection(targetPosition);
|
| - }
|
| -
|
| - newSelection.setExtent(targetPosition);
|
| - if (m_frame->selectionGranularity() != CharacterGranularity)
|
| - newSelection.expandUsingGranularity(m_frame->selectionGranularity());
|
| -
|
| - if (m_frame->shouldChangeSelection(newSelection)) {
|
| - m_frame->selection()->setLastChangeWasHorizontalExtension(false);
|
| - m_frame->selection()->setSelection(newSelection);
|
| - }
|
| -}
|
| -
|
| -bool EventHandler::handleMouseUp(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (eventLoopHandleMouseUp(event))
|
| - return true;
|
| -
|
| - // If this was the first click in the window, we don't even want to clear the selection.
|
| - // This case occurs when the user clicks on a draggable element, since we have to process
|
| - // the mouse down and drag events to see if we might start a drag. For other first clicks
|
| - // in a window, we just don't acceptFirstMouse, and the whole down-drag-up sequence gets
|
| - // ignored upstream of this layer.
|
| - return eventActivatedView(event.event());
|
| -}
|
| -
|
| -bool EventHandler::handleMouseReleaseEvent(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (m_autoscrollInProgress)
|
| - stopAutoscrollTimer();
|
| -
|
| - if (handleMouseUp(event))
|
| - return true;
|
| -
|
| - // Used to prevent mouseMoveEvent from initiating a drag before
|
| - // the mouse is pressed again.
|
| - m_frame->selection()->setCaretBlinkingSuspended(false);
|
| - m_mousePressed = false;
|
| - m_mouseDownMayStartDrag = false;
|
| - m_mouseDownMayStartSelect = false;
|
| - m_mouseDownMayStartAutoscroll = false;
|
| - m_mouseDownWasInSubframe = false;
|
| -
|
| - bool handled = false;
|
| -
|
| - // Clear the selection if the mouse didn't move after the last mouse press.
|
| - // We do this so when clicking on the selection, the selection goes away.
|
| - // However, if we are editing, place the caret.
|
| - if (m_mouseDownWasSingleClickInSelection && !m_beganSelectingText
|
| - && m_dragStartPos == event.event().pos()
|
| - && m_frame->selection()->isRange()) {
|
| - Selection newSelection;
|
| - Node *node = event.targetNode();
|
| - if (node && node->isContentEditable() && node->renderer()) {
|
| - VisiblePosition pos = node->renderer()->positionForPoint(event.localPoint());
|
| - newSelection = Selection(pos);
|
| - }
|
| - if (m_frame->shouldChangeSelection(newSelection))
|
| - m_frame->selection()->setSelection(newSelection);
|
| -
|
| - handled = true;
|
| - }
|
| -
|
| - m_frame->notifyRendererOfSelectionChange(true);
|
| -
|
| - m_frame->selection()->selectFrameElementInParentIfFullySelected();
|
| -
|
| - return handled;
|
| -}
|
| -
|
| -void EventHandler::handleAutoscroll(RenderObject* renderer)
|
| -{
|
| - // We don't want to trigger the autoscroll or the panScroll if it's already active
|
| - if (m_autoscrollTimer.isActive())
|
| - return;
|
| -
|
| - setAutoscrollRenderer(renderer);
|
| -
|
| -#if ENABLE(PAN_SCROLLING)
|
| - if (m_panScrollInProgress) {
|
| - m_panScrollStartPos = currentMousePosition();
|
| - m_frame->view()->addPanScrollIcon(m_panScrollStartPos);
|
| - // If we're not in the top frame we notify it that we are using the panScroll
|
| - if (m_frame != m_frame->page()->mainFrame())
|
| - m_frame->page()->mainFrame()->eventHandler()->setPanScrollInProgress(true);
|
| - }
|
| -#endif
|
| -
|
| - startAutoscrollTimer();
|
| -}
|
| -
|
| -void EventHandler::autoscrollTimerFired(Timer<EventHandler>*)
|
| -{
|
| - RenderObject* r = autoscrollRenderer();
|
| - if (!r || !r->isBox()) {
|
| - stopAutoscrollTimer();
|
| - return;
|
| - }
|
| -
|
| - if (m_autoscrollInProgress) {
|
| - if (!m_mousePressed) {
|
| - stopAutoscrollTimer();
|
| - return;
|
| - }
|
| - toRenderBox(r)->autoscroll();
|
| - } else {
|
| - // we verify that the main frame hasn't received the order to stop the panScroll
|
| - if (!m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress()) {
|
| - stopAutoscrollTimer();
|
| - return;
|
| - }
|
| -#if ENABLE(PAN_SCROLLING)
|
| - setPanScrollCursor();
|
| - toRenderBox(r)->panScroll(m_panScrollStartPos);
|
| -#endif
|
| - }
|
| -}
|
| -
|
| -void EventHandler::setPanScrollCursor()
|
| -{
|
| - // At the original click location we draw a 4 arrowed icon. Over this icon there won't be any scroll
|
| - // So we don't want to change the cursor over this area
|
| - const int noScrollRadius = 9;
|
| - bool east = m_panScrollStartPos.x() < (m_currentMousePosition.x() - noScrollRadius);
|
| - bool west = m_panScrollStartPos.x() > (m_currentMousePosition.x() + noScrollRadius);
|
| - bool north = m_panScrollStartPos.y() > (m_currentMousePosition.y() + noScrollRadius);
|
| - bool south = m_panScrollStartPos.y() < (m_currentMousePosition.y() - noScrollRadius);
|
| -
|
| - if (north) {
|
| - if (east)
|
| - m_frame->view()->setCursor(northEastPanningCursor());
|
| - else if (west)
|
| - m_frame->view()->setCursor(northWestPanningCursor());
|
| - else
|
| - m_frame->view()->setCursor(northPanningCursor());
|
| - } else if (south) {
|
| - if (east)
|
| - m_frame->view()->setCursor(southEastPanningCursor());
|
| - else if (west)
|
| - m_frame->view()->setCursor(southWestPanningCursor());
|
| - else
|
| - m_frame->view()->setCursor(southPanningCursor());
|
| - } else if (east)
|
| - m_frame->view()->setCursor(eastPanningCursor());
|
| - else if (west)
|
| - m_frame->view()->setCursor(westPanningCursor());
|
| - else
|
| - m_frame->view()->setCursor(middlePanningCursor());
|
| -}
|
| -
|
| -RenderObject* EventHandler::autoscrollRenderer() const
|
| -{
|
| - return m_autoscrollRenderer;
|
| -}
|
| -
|
| -void EventHandler::updateAutoscrollRenderer()
|
| -{
|
| - if (!m_autoscrollRenderer)
|
| - return;
|
| -
|
| - HitTestResult hitTest = hitTestResultAtPoint(m_panScrollStartPos, true);
|
| -
|
| - if (Node* nodeAtPoint = hitTest.innerNode())
|
| - m_autoscrollRenderer = nodeAtPoint->renderer();
|
| -
|
| - while (m_autoscrollRenderer && (!m_autoscrollRenderer->isBox() || !toRenderBox(m_autoscrollRenderer)->canBeProgramaticallyScrolled(false)))
|
| - m_autoscrollRenderer = m_autoscrollRenderer->parent();
|
| -}
|
| -
|
| -void EventHandler::setAutoscrollRenderer(RenderObject* renderer)
|
| -{
|
| - m_autoscrollRenderer = renderer;
|
| -}
|
| -
|
| -void EventHandler::allowDHTMLDrag(bool& flagDHTML, bool& flagUA) const
|
| -{
|
| - if (!m_frame || !m_frame->document()) {
|
| - flagDHTML = false;
|
| - flagUA = false;
|
| - return;
|
| - }
|
| -
|
| - unsigned mask = m_frame->page()->dragController()->delegateDragSourceAction(m_frame->view()->contentsToWindow(m_mouseDownPos));
|
| - flagDHTML = (mask & DragSourceActionDHTML) != DragSourceActionNone;
|
| - flagUA = ((mask & DragSourceActionImage) || (mask & DragSourceActionLink) || (mask & DragSourceActionSelection));
|
| -}
|
| -
|
| -HitTestResult EventHandler::hitTestResultAtPoint(const IntPoint& point, bool allowShadowContent, bool ignoreClipping)
|
| -{
|
| - HitTestResult result(point);
|
| - if (!m_frame->contentRenderer())
|
| - return result;
|
| - int hitType = HitTestRequest::ReadOnly | HitTestRequest::Active;
|
| - if (ignoreClipping)
|
| - hitType |= HitTestRequest::IgnoreClipping;
|
| - m_frame->contentRenderer()->layer()->hitTest(HitTestRequest(hitType), result);
|
| -
|
| - while (true) {
|
| - Node* n = result.innerNode();
|
| - if (!result.isOverWidget() || !n || !n->renderer() || !n->renderer()->isWidget())
|
| - break;
|
| - RenderWidget* renderWidget = static_cast<RenderWidget*>(n->renderer());
|
| - Widget* widget = renderWidget->widget();
|
| - if (!widget || !widget->isFrameView())
|
| - break;
|
| - Frame* frame = static_cast<HTMLFrameElementBase*>(n)->contentFrame();
|
| - if (!frame || !frame->contentRenderer())
|
| - break;
|
| - FrameView* view = static_cast<FrameView*>(widget);
|
| - IntPoint widgetPoint(result.localPoint().x() + view->scrollX() - renderWidget->borderLeft() - renderWidget->paddingLeft(),
|
| - result.localPoint().y() + view->scrollY() - renderWidget->borderTop() - renderWidget->paddingTop());
|
| - HitTestResult widgetHitTestResult(widgetPoint);
|
| - frame->contentRenderer()->layer()->hitTest(HitTestRequest(hitType), widgetHitTestResult);
|
| - result = widgetHitTestResult;
|
| - }
|
| -
|
| - // If our HitTestResult is not visible, then we started hit testing too far down the frame chain.
|
| - // Another hit test at the main frame level should get us the correct visible result.
|
| - Frame* resultFrame = result.innerNonSharedNode() ? result.innerNonSharedNode()->document()->frame() : 0;
|
| - Frame* mainFrame = m_frame->page()->mainFrame();
|
| - if (m_frame != mainFrame && resultFrame && resultFrame != mainFrame && !resultFrame->editor()->insideVisibleArea(result.point())) {
|
| - IntPoint windowPoint = resultFrame->view()->contentsToWindow(result.point());
|
| - IntPoint mainFramePoint = mainFrame->view()->windowToContents(windowPoint);
|
| - result = mainFrame->eventHandler()->hitTestResultAtPoint(mainFramePoint, allowShadowContent, ignoreClipping);
|
| - }
|
| -
|
| - if (!allowShadowContent)
|
| - result.setToNonShadowAncestor();
|
| -
|
| - return result;
|
| -}
|
| -
|
| -
|
| -void EventHandler::startAutoscrollTimer()
|
| -{
|
| - m_autoscrollTimer.startRepeating(autoscrollInterval);
|
| -}
|
| -
|
| -void EventHandler::stopAutoscrollTimer(bool rendererIsBeingDestroyed)
|
| -{
|
| - if (m_autoscrollInProgress) {
|
| - if (m_mouseDownWasInSubframe) {
|
| - if (Frame* subframe = subframeForTargetNode(m_mousePressNode.get()))
|
| - subframe->eventHandler()->stopAutoscrollTimer(rendererIsBeingDestroyed);
|
| - return;
|
| - }
|
| - }
|
| -
|
| - if (autoscrollRenderer()) {
|
| - if (!rendererIsBeingDestroyed && (m_autoscrollInProgress || m_panScrollInProgress))
|
| - toRenderBox(autoscrollRenderer())->stopAutoscroll();
|
| -#if ENABLE(PAN_SCROLLING)
|
| - if (m_panScrollInProgress) {
|
| - m_frame->view()->removePanScrollIcon();
|
| - m_frame->view()->setCursor(pointerCursor());
|
| - }
|
| -#endif
|
| -
|
| - setAutoscrollRenderer(0);
|
| - }
|
| -
|
| - m_autoscrollTimer.stop();
|
| -
|
| - m_panScrollInProgress = false;
|
| - // If we're not in the top frame we notify it that we are not using the panScroll anymore
|
| - if (m_frame->page() && m_frame != m_frame->page()->mainFrame())
|
| - m_frame->page()->mainFrame()->eventHandler()->setPanScrollInProgress(false);
|
| - m_autoscrollInProgress = false;
|
| -}
|
| -
|
| -Node* EventHandler::mousePressNode() const
|
| -{
|
| - return m_mousePressNode.get();
|
| -}
|
| -
|
| -void EventHandler::setMousePressNode(PassRefPtr<Node> node)
|
| -{
|
| - m_mousePressNode = node;
|
| -}
|
| -
|
| -bool EventHandler::scrollOverflow(ScrollDirection direction, ScrollGranularity granularity)
|
| -{
|
| - if (!m_frame->document())
|
| - return false;
|
| -
|
| - Node* node = m_frame->document()->focusedNode();
|
| - if (!node)
|
| - node = m_mousePressNode.get();
|
| -
|
| - if (node) {
|
| - RenderObject* r = node->renderer();
|
| - if (r && !r->isListBox())
|
| - return r->enclosingBox()->scroll(direction, granularity);
|
| - }
|
| -
|
| - return false;
|
| -}
|
| -
|
| -IntPoint EventHandler::currentMousePosition() const
|
| -{
|
| - return m_currentMousePosition;
|
| -}
|
| -
|
| -Frame* subframeForHitTestResult(const MouseEventWithHitTestResults& hitTestResult)
|
| -{
|
| - if (!hitTestResult.isOverWidget())
|
| - return 0;
|
| - return subframeForTargetNode(hitTestResult.targetNode());
|
| -}
|
| -
|
| -Frame* subframeForTargetNode(Node* node)
|
| -{
|
| - if (!node)
|
| - return 0;
|
| -
|
| - RenderObject* renderer = node->renderer();
|
| - if (!renderer || !renderer->isWidget())
|
| - return 0;
|
| -
|
| - Widget* widget = static_cast<RenderWidget*>(renderer)->widget();
|
| - if (!widget || !widget->isFrameView())
|
| - return 0;
|
| -
|
| - return static_cast<FrameView*>(widget)->frame();
|
| -}
|
| -
|
| -static bool isSubmitImage(Node* node)
|
| -{
|
| - return node && node->hasTagName(inputTag)
|
| - && static_cast<HTMLInputElement*>(node)->inputType() == HTMLInputElement::IMAGE;
|
| -}
|
| -
|
| -// Returns true if the node's editable block is not current focused for editing
|
| -static bool nodeIsNotBeingEdited(Node* node, Frame* frame)
|
| -{
|
| - return frame->selection()->rootEditableElement() != node->rootEditableElement();
|
| -}
|
| -
|
| -Cursor EventHandler::selectCursor(const MouseEventWithHitTestResults& event, Scrollbar* scrollbar)
|
| -{
|
| - // During selection, use an I-beam no matter what we're over.
|
| - // If you're capturing mouse events for a particular node, don't treat this as a selection.
|
| - if (m_mousePressed && m_mouseDownMayStartSelect && m_frame->selection()->isCaretOrRange() && !m_capturingMouseEventsNode)
|
| - return iBeamCursor();
|
| -
|
| - Node* node = event.targetNode();
|
| - RenderObject* renderer = node ? node->renderer() : 0;
|
| - RenderStyle* style = renderer ? renderer->style() : 0;
|
| -
|
| - if (renderer && renderer->isFrameSet()) {
|
| - RenderFrameSet* fs = static_cast<RenderFrameSet*>(renderer);
|
| - if (fs->canResizeRow(event.localPoint()))
|
| - return rowResizeCursor();
|
| - if (fs->canResizeColumn(event.localPoint()))
|
| - return columnResizeCursor();
|
| - }
|
| -
|
| - if (style && style->cursors()) {
|
| - const CursorList* cursors = style->cursors();
|
| - for (unsigned i = 0; i < cursors->size(); ++i) {
|
| - CachedImage* cimage = (*cursors)[i].cursorImage.get();
|
| - IntPoint hotSpot = (*cursors)[i].hotSpot;
|
| - if (!cimage)
|
| - continue;
|
| - // Limit the size of cursors so that they cannot be used to cover UI elements in chrome.
|
| - IntSize size = cimage->image()->size();
|
| - if (size.width() > 128 || size.height() > 128)
|
| - continue;
|
| - // Do not let the hotspot be outside the bounds of the image.
|
| - if (hotSpot.x() < 0 || hotSpot.y() < 0 || hotSpot.x() > size.width() || hotSpot.y() > size.height())
|
| - continue;
|
| - if (cimage->image()->isNull())
|
| - break;
|
| - if (!cimage->errorOccurred())
|
| - return Cursor(cimage->image(), hotSpot);
|
| - }
|
| - }
|
| -
|
| - switch (style ? style->cursor() : CURSOR_AUTO) {
|
| - case CURSOR_AUTO: {
|
| - bool editable = (node && node->isContentEditable());
|
| - bool editableLinkEnabled = false;
|
| -
|
| - // If the link is editable, then we need to check the settings to see whether or not the link should be followed
|
| - if (editable) {
|
| - ASSERT(m_frame->settings());
|
| - switch(m_frame->settings()->editableLinkBehavior()) {
|
| - default:
|
| - case EditableLinkDefaultBehavior:
|
| - case EditableLinkAlwaysLive:
|
| - editableLinkEnabled = true;
|
| - break;
|
| -
|
| - case EditableLinkNeverLive:
|
| - editableLinkEnabled = false;
|
| - break;
|
| -
|
| - case EditableLinkLiveWhenNotFocused:
|
| - editableLinkEnabled = nodeIsNotBeingEdited(node, m_frame) || event.event().shiftKey();
|
| - break;
|
| -
|
| - case EditableLinkOnlyLiveWithShiftKey:
|
| - editableLinkEnabled = event.event().shiftKey();
|
| - break;
|
| - }
|
| - }
|
| -
|
| - if ((event.isOverLink() || isSubmitImage(node)) && (!editable || editableLinkEnabled))
|
| - return handCursor();
|
| - RenderLayer* layer = renderer ? renderer->enclosingLayer() : 0;
|
| - bool inResizer = false;
|
| - if (m_frame->view() && layer && layer->isPointInResizeControl(m_frame->view()->windowToContents(event.event().pos())))
|
| - inResizer = true;
|
| - if ((editable || (renderer && renderer->isText() && node->canStartSelection())) && !inResizer && !scrollbar)
|
| - return iBeamCursor();
|
| - return pointerCursor();
|
| - }
|
| - case CURSOR_CROSS:
|
| - return crossCursor();
|
| - case CURSOR_POINTER:
|
| - return handCursor();
|
| - case CURSOR_MOVE:
|
| - return moveCursor();
|
| - case CURSOR_ALL_SCROLL:
|
| - return moveCursor();
|
| - case CURSOR_E_RESIZE:
|
| - return eastResizeCursor();
|
| - case CURSOR_W_RESIZE:
|
| - return westResizeCursor();
|
| - case CURSOR_N_RESIZE:
|
| - return northResizeCursor();
|
| - case CURSOR_S_RESIZE:
|
| - return southResizeCursor();
|
| - case CURSOR_NE_RESIZE:
|
| - return northEastResizeCursor();
|
| - case CURSOR_SW_RESIZE:
|
| - return southWestResizeCursor();
|
| - case CURSOR_NW_RESIZE:
|
| - return northWestResizeCursor();
|
| - case CURSOR_SE_RESIZE:
|
| - return southEastResizeCursor();
|
| - case CURSOR_NS_RESIZE:
|
| - return northSouthResizeCursor();
|
| - case CURSOR_EW_RESIZE:
|
| - return eastWestResizeCursor();
|
| - case CURSOR_NESW_RESIZE:
|
| - return northEastSouthWestResizeCursor();
|
| - case CURSOR_NWSE_RESIZE:
|
| - return northWestSouthEastResizeCursor();
|
| - case CURSOR_COL_RESIZE:
|
| - return columnResizeCursor();
|
| - case CURSOR_ROW_RESIZE:
|
| - return rowResizeCursor();
|
| - case CURSOR_TEXT:
|
| - return iBeamCursor();
|
| - case CURSOR_WAIT:
|
| - return waitCursor();
|
| - case CURSOR_HELP:
|
| - return helpCursor();
|
| - case CURSOR_VERTICAL_TEXT:
|
| - return verticalTextCursor();
|
| - case CURSOR_CELL:
|
| - return cellCursor();
|
| - case CURSOR_CONTEXT_MENU:
|
| - return contextMenuCursor();
|
| - case CURSOR_PROGRESS:
|
| - return progressCursor();
|
| - case CURSOR_NO_DROP:
|
| - return noDropCursor();
|
| - case CURSOR_ALIAS:
|
| - return aliasCursor();
|
| - case CURSOR_COPY:
|
| - return copyCursor();
|
| - case CURSOR_NONE:
|
| - return noneCursor();
|
| - case CURSOR_NOT_ALLOWED:
|
| - return notAllowedCursor();
|
| - case CURSOR_DEFAULT:
|
| - return pointerCursor();
|
| - case CURSOR_WEBKIT_ZOOM_IN:
|
| - return zoomInCursor();
|
| - case CURSOR_WEBKIT_ZOOM_OUT:
|
| - return zoomOutCursor();
|
| - case CURSOR_WEBKIT_GRAB:
|
| - return grabCursor();
|
| - case CURSOR_WEBKIT_GRABBING:
|
| - return grabbingCursor();
|
| - }
|
| - return pointerCursor();
|
| -}
|
| -
|
| -bool EventHandler::handleMousePressEvent(const PlatformMouseEvent& mouseEvent)
|
| -{
|
| - if (!m_frame->document())
|
| - return false;
|
| -
|
| - RefPtr<FrameView> protector(m_frame->view());
|
| -
|
| - m_mousePressed = true;
|
| - m_currentMousePosition = mouseEvent.pos();
|
| - m_mouseDownTimestamp = mouseEvent.timestamp();
|
| - m_mouseDownMayStartDrag = false;
|
| - m_mouseDownMayStartSelect = false;
|
| - m_mouseDownMayStartAutoscroll = false;
|
| - m_mouseDownPos = m_frame->view()->windowToContents(mouseEvent.pos());
|
| - m_mouseDownWasInSubframe = false;
|
| -
|
| - HitTestRequest request(HitTestRequest::Active);
|
| - MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| -
|
| - if (!mev.targetNode()) {
|
| - invalidateClick();
|
| - return false;
|
| - }
|
| -
|
| - m_mousePressNode = mev.targetNode();
|
| -
|
| - InspectorController* inspector = m_frame->page()->inspectorController();
|
| - if (inspector && inspector->enabled() && inspector->searchingForNodeInPage()) {
|
| - inspector->handleMousePressOnNode(m_mousePressNode.get());
|
| - invalidateClick();
|
| - return true;
|
| - }
|
| -
|
| - Frame* subframe = subframeForHitTestResult(mev);
|
| - if (subframe && passMousePressEventToSubframe(mev, subframe)) {
|
| - // Start capturing future events for this frame. We only do this if we didn't clear
|
| - // the m_mousePressed flag, which may happen if an AppKit widget entered a modal event loop.
|
| - if (m_mousePressed)
|
| - m_capturingMouseEventsNode = mev.targetNode();
|
| - invalidateClick();
|
| - return true;
|
| - }
|
| -
|
| -#if ENABLE(PAN_SCROLLING)
|
| - if (m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() || m_autoscrollInProgress) {
|
| - stopAutoscrollTimer();
|
| - invalidateClick();
|
| - return true;
|
| - }
|
| -
|
| - if (mouseEvent.button() == MiddleButton && !mev.isOverLink()) {
|
| - RenderObject* renderer = mev.targetNode()->renderer();
|
| -
|
| - while (renderer && (!renderer->isBox() || !toRenderBox(renderer)->canBeProgramaticallyScrolled(false))) {
|
| - if (!renderer->parent() && renderer->node() == renderer->document() && renderer->document()->ownerElement())
|
| - renderer = renderer->document()->ownerElement()->renderer();
|
| - else
|
| - renderer = renderer->parent();
|
| - }
|
| -
|
| - if (renderer) {
|
| - m_panScrollInProgress = true;
|
| - handleAutoscroll(renderer);
|
| - invalidateClick();
|
| - return true;
|
| - }
|
| - }
|
| -#endif
|
| -
|
| - m_clickCount = mouseEvent.clickCount();
|
| - m_clickNode = mev.targetNode();
|
| -
|
| - RenderLayer* layer = m_clickNode->renderer() ? m_clickNode->renderer()->enclosingLayer() : 0;
|
| - IntPoint p = m_frame->view()->windowToContents(mouseEvent.pos());
|
| - if (layer && layer->isPointInResizeControl(p)) {
|
| - layer->setInResizeMode(true);
|
| - m_resizeLayer = layer;
|
| - m_offsetFromResizeCorner = layer->offsetFromResizeCorner(p);
|
| - invalidateClick();
|
| - return true;
|
| - }
|
| -
|
| - bool swallowEvent = dispatchMouseEvent(eventNames().mousedownEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| -
|
| - // If the hit testing originally determined the event was in a scrollbar, refetch the MouseEventWithHitTestResults
|
| - // in case the scrollbar widget was destroyed when the mouse event was handled.
|
| - if (mev.scrollbar()) {
|
| - const bool wasLastScrollBar = mev.scrollbar() == m_lastScrollbarUnderMouse.get();
|
| - HitTestRequest request(HitTestRequest::ReadOnly |
|
| - HitTestRequest::Active);
|
| - mev = prepareMouseEvent(request, mouseEvent);
|
| -
|
| - if (wasLastScrollBar && mev.scrollbar() != m_lastScrollbarUnderMouse.get())
|
| - m_lastScrollbarUnderMouse = 0;
|
| - }
|
| -
|
| - if (swallowEvent) {
|
| - // scrollbars should get events anyway, even disabled controls might be scrollable
|
| - if (mev.scrollbar())
|
| - passMousePressEventToScrollbar(mev, mev.scrollbar());
|
| - } else {
|
| - // Refetch the event target node if it currently is the shadow node inside an <input> element.
|
| - // If a mouse event handler changes the input element type to one that has a widget associated,
|
| - // we'd like to EventHandler::handleMousePressEvent to pass the event to the widget and thus the
|
| - // event target node can't still be the shadow node.
|
| - if (mev.targetNode()->isShadowNode() && mev.targetNode()->shadowParentNode()->hasTagName(inputTag)) {
|
| - HitTestRequest request(HitTestRequest::ReadOnly |
|
| - HitTestRequest::Active);
|
| - mev = prepareMouseEvent(request, mouseEvent);
|
| - }
|
| -
|
| - Scrollbar* scrollbar = m_frame->view()->scrollbarUnderMouse(mouseEvent);
|
| - if (!scrollbar)
|
| - scrollbar = mev.scrollbar();
|
| - if (scrollbar && passMousePressEventToScrollbar(mev, scrollbar))
|
| - swallowEvent = true;
|
| - else
|
| - swallowEvent = handleMousePressEvent(mev);
|
| - }
|
| -
|
| - return swallowEvent;
|
| -}
|
| -
|
| -// This method only exists for platforms that don't know how to deliver
|
| -bool EventHandler::handleMouseDoubleClickEvent(const PlatformMouseEvent& mouseEvent)
|
| -{
|
| - if (!m_frame->document())
|
| - return false;
|
| -
|
| - RefPtr<FrameView> protector(m_frame->view());
|
| -
|
| - // We get this instead of a second mouse-up
|
| - m_mousePressed = false;
|
| - m_currentMousePosition = mouseEvent.pos();
|
| -
|
| - HitTestRequest request(HitTestRequest::Active);
|
| - MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| - Frame* subframe = subframeForHitTestResult(mev);
|
| - if (subframe && passMousePressEventToSubframe(mev, subframe)) {
|
| - m_capturingMouseEventsNode = 0;
|
| - return true;
|
| - }
|
| -
|
| - m_clickCount = mouseEvent.clickCount();
|
| - bool swallowMouseUpEvent = dispatchMouseEvent(eventNames().mouseupEvent, mev.targetNode(), true, m_clickCount, mouseEvent, false);
|
| -
|
| - bool swallowClickEvent = false;
|
| - // Don't ever dispatch click events for right clicks
|
| - if (mouseEvent.button() != RightButton && mev.targetNode() == m_clickNode)
|
| - swallowClickEvent = dispatchMouseEvent(eventNames().clickEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| -
|
| - if (m_lastScrollbarUnderMouse)
|
| - swallowMouseUpEvent = m_lastScrollbarUnderMouse->mouseUp();
|
| -
|
| - bool swallowMouseReleaseEvent = false;
|
| - if (!swallowMouseUpEvent)
|
| - swallowMouseReleaseEvent = handleMouseReleaseEvent(mev);
|
| -
|
| - invalidateClick();
|
| -
|
| - return swallowMouseUpEvent || swallowClickEvent || swallowMouseReleaseEvent;
|
| -}
|
| -
|
| -bool EventHandler::mouseMoved(const PlatformMouseEvent& event)
|
| -{
|
| - HitTestResult hoveredNode = HitTestResult(IntPoint());
|
| - bool result = handleMouseMoveEvent(event, &hoveredNode);
|
| -
|
| - Page* page = m_frame->page();
|
| - if (!page)
|
| - return result;
|
| -
|
| - hoveredNode.setToNonShadowAncestor();
|
| - page->chrome()->mouseDidMoveOverElement(hoveredNode, event.modifierFlags());
|
| - page->chrome()->setToolTip(hoveredNode);
|
| - return result;
|
| -}
|
| -
|
| -bool EventHandler::handleMouseMoveEvent(const PlatformMouseEvent& mouseEvent, HitTestResult* hoveredNode)
|
| -{
|
| - // in Radar 3703768 we saw frequent crashes apparently due to the
|
| - // part being null here, which seems impossible, so check for nil
|
| - // but also assert so that we can try to figure this out in debug
|
| - // builds, if it happens.
|
| - ASSERT(m_frame);
|
| - if (!m_frame || !m_frame->document())
|
| - return false;
|
| -
|
| - RefPtr<FrameView> protector(m_frame->view());
|
| - m_currentMousePosition = mouseEvent.pos();
|
| -
|
| - if (m_hoverTimer.isActive())
|
| - m_hoverTimer.stop();
|
| -
|
| -#if ENABLE(SVG)
|
| - if (m_svgPan) {
|
| - static_cast<SVGDocument*>(m_frame->document())->updatePan(m_currentMousePosition);
|
| - return true;
|
| - }
|
| -#endif
|
| -
|
| - if (m_frameSetBeingResized)
|
| - return dispatchMouseEvent(eventNames().mousemoveEvent, m_frameSetBeingResized.get(), false, 0, mouseEvent, false);
|
| -
|
| - // Send events right to a scrollbar if the mouse is pressed.
|
| - if (m_lastScrollbarUnderMouse && m_mousePressed)
|
| - return m_lastScrollbarUnderMouse->mouseMoved(m_lastScrollbarUnderMouse->transformEvent(mouseEvent));
|
| -
|
| - // Treat mouse move events while the mouse is pressed as "read-only" in prepareMouseEvent
|
| - // if we are allowed to select.
|
| - // This means that :hover and :active freeze in the state they were in when the mouse
|
| - // was pressed, rather than updating for nodes the mouse moves over as you hold the mouse down.
|
| - int hitType = HitTestRequest::MouseMove;
|
| - if (m_mousePressed && m_mouseDownMayStartSelect)
|
| - hitType |= HitTestRequest::ReadOnly;
|
| - if (m_mousePressed)
|
| - hitType |= HitTestRequest::Active;
|
| - HitTestRequest request(hitType);
|
| - MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| - if (hoveredNode)
|
| - *hoveredNode = mev.hitTestResult();
|
| -
|
| - Scrollbar* scrollbar = 0;
|
| -
|
| - if (m_resizeLayer && m_resizeLayer->inResizeMode())
|
| - m_resizeLayer->resize(mouseEvent, m_offsetFromResizeCorner);
|
| - else {
|
| - if (m_frame->view())
|
| - scrollbar = m_frame->view()->scrollbarUnderMouse(mouseEvent);
|
| -
|
| - if (!scrollbar)
|
| - scrollbar = mev.scrollbar();
|
| -
|
| - if (m_lastScrollbarUnderMouse != scrollbar) {
|
| - // Send mouse exited to the old scrollbar.
|
| - if (m_lastScrollbarUnderMouse)
|
| - m_lastScrollbarUnderMouse->mouseExited();
|
| - m_lastScrollbarUnderMouse = m_mousePressed ? 0 : scrollbar;
|
| - }
|
| - }
|
| -
|
| - bool swallowEvent = false;
|
| - RefPtr<Frame> newSubframe = m_capturingMouseEventsNode.get() ? subframeForTargetNode(m_capturingMouseEventsNode.get()) : subframeForHitTestResult(mev);
|
| -
|
| - // We want mouseouts to happen first, from the inside out. First send a move event to the last subframe so that it will fire mouseouts.
|
| - if (m_lastMouseMoveEventSubframe && m_lastMouseMoveEventSubframe->tree()->isDescendantOf(m_frame) && m_lastMouseMoveEventSubframe != newSubframe)
|
| - passMouseMoveEventToSubframe(mev, m_lastMouseMoveEventSubframe.get());
|
| -
|
| - if (newSubframe) {
|
| - // Update over/out state before passing the event to the subframe.
|
| - updateMouseEventTargetNode(mev.targetNode(), mouseEvent, true);
|
| -
|
| - // Event dispatch in updateMouseEventTargetNode may have caused the subframe of the target
|
| - // node to be detached from its FrameView, in which case the event should not be passed.
|
| - if (newSubframe->view())
|
| - swallowEvent |= passMouseMoveEventToSubframe(mev, newSubframe.get(), hoveredNode);
|
| - } else {
|
| - if (scrollbar && !m_mousePressed)
|
| - scrollbar->mouseMoved(scrollbar->transformEvent(mouseEvent)); // Handle hover effects on platforms that support visual feedback on scrollbar hovering.
|
| - if ((!m_resizeLayer || !m_resizeLayer->inResizeMode()) && !m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() && m_frame->view())
|
| - m_frame->view()->setCursor(selectCursor(mev, scrollbar));
|
| - }
|
| -
|
| - m_lastMouseMoveEventSubframe = newSubframe;
|
| -
|
| - if (swallowEvent)
|
| - return true;
|
| -
|
| - swallowEvent = dispatchMouseEvent(eventNames().mousemoveEvent, mev.targetNode(), false, 0, mouseEvent, true);
|
| - if (!swallowEvent)
|
| - swallowEvent = handleMouseDraggedEvent(mev);
|
| -
|
| - return swallowEvent;
|
| -}
|
| -
|
| -void EventHandler::invalidateClick()
|
| -{
|
| - m_clickCount = 0;
|
| - m_clickNode = 0;
|
| -}
|
| -
|
| -bool EventHandler::handleMouseReleaseEvent(const PlatformMouseEvent& mouseEvent)
|
| -{
|
| - if (!m_frame->document())
|
| - return false;
|
| -
|
| - RefPtr<FrameView> protector(m_frame->view());
|
| -
|
| - m_mousePressed = false;
|
| - m_currentMousePosition = mouseEvent.pos();
|
| -
|
| -#if ENABLE(SVG)
|
| - if (m_svgPan) {
|
| - m_svgPan = false;
|
| - static_cast<SVGDocument*>(m_frame->document())->updatePan(m_currentMousePosition);
|
| - return true;
|
| - }
|
| -#endif
|
| -
|
| - if (m_frameSetBeingResized)
|
| - return dispatchMouseEvent(eventNames().mouseupEvent, m_frameSetBeingResized.get(), true, m_clickCount, mouseEvent, false);
|
| -
|
| - if (m_lastScrollbarUnderMouse) {
|
| - invalidateClick();
|
| - return m_lastScrollbarUnderMouse->mouseUp();
|
| - }
|
| -
|
| - HitTestRequest request(HitTestRequest::MouseUp);
|
| - MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| - Frame* subframe = m_capturingMouseEventsNode.get() ? subframeForTargetNode(m_capturingMouseEventsNode.get()) : subframeForHitTestResult(mev);
|
| - if (subframe && passMouseReleaseEventToSubframe(mev, subframe)) {
|
| - m_capturingMouseEventsNode = 0;
|
| - return true;
|
| - }
|
| -
|
| - bool swallowMouseUpEvent = dispatchMouseEvent(eventNames().mouseupEvent, mev.targetNode(), true, m_clickCount, mouseEvent, false);
|
| -
|
| - // Don't ever dispatch click events for right clicks
|
| - bool swallowClickEvent = false;
|
| - if (m_clickCount > 0 && mouseEvent.button() != RightButton && mev.targetNode() == m_clickNode)
|
| - swallowClickEvent = dispatchMouseEvent(eventNames().clickEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| -
|
| - if (m_resizeLayer) {
|
| - m_resizeLayer->setInResizeMode(false);
|
| - m_resizeLayer = 0;
|
| - }
|
| -
|
| - bool swallowMouseReleaseEvent = false;
|
| - if (!swallowMouseUpEvent)
|
| - swallowMouseReleaseEvent = handleMouseReleaseEvent(mev);
|
| -
|
| - invalidateClick();
|
| -
|
| - return swallowMouseUpEvent || swallowClickEvent || swallowMouseReleaseEvent;
|
| -}
|
| -
|
| -bool EventHandler::dispatchDragEvent(const AtomicString& eventType, Node* dragTarget, const PlatformMouseEvent& event, Clipboard* clipboard)
|
| -{
|
| - IntPoint contentsPos = m_frame->view()->windowToContents(event.pos());
|
| -
|
| - RefPtr<MouseEvent> me = MouseEvent::create(eventType,
|
| - true, true, m_frame->document()->defaultView(),
|
| - 0, event.globalX(), event.globalY(), contentsPos.x(), contentsPos.y(),
|
| - event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(),
|
| - 0, 0, clipboard);
|
| -
|
| - ExceptionCode ec = 0;
|
| - EventTargetNodeCast(dragTarget)->dispatchEvent(me.get(), ec);
|
| - return me->defaultPrevented();
|
| -}
|
| -
|
| -bool EventHandler::updateDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| -{
|
| - bool accept = false;
|
| -
|
| - if (!m_frame->document())
|
| - return false;
|
| -
|
| - if (!m_frame->view())
|
| - return false;
|
| -
|
| - HitTestRequest request(HitTestRequest::ReadOnly);
|
| - MouseEventWithHitTestResults mev = prepareMouseEvent(request, event);
|
| -
|
| - // Drag events should never go to text nodes (following IE, and proper mouseover/out dispatch)
|
| - Node* newTarget = mev.targetNode();
|
| - if (newTarget && newTarget->isTextNode())
|
| - newTarget = newTarget->parentNode();
|
| - if (newTarget)
|
| - newTarget = newTarget->shadowAncestorNode();
|
| -
|
| - if (m_dragTarget != newTarget) {
|
| - // FIXME: this ordering was explicitly chosen to match WinIE. However,
|
| - // it is sometimes incorrect when dragging within subframes, as seen with
|
| - // LayoutTests/fast/events/drag-in-frames.html.
|
| - if (newTarget)
|
| - if (newTarget->hasTagName(frameTag) || newTarget->hasTagName(iframeTag))
|
| - accept = static_cast<HTMLFrameElementBase*>(newTarget)->contentFrame()->eventHandler()->updateDragAndDrop(event, clipboard);
|
| - else
|
| - accept = dispatchDragEvent(eventNames().dragenterEvent, newTarget, event, clipboard);
|
| -
|
| - if (m_dragTarget) {
|
| - Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| - ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| - if (frame)
|
| - accept = frame->eventHandler()->updateDragAndDrop(event, clipboard);
|
| - else
|
| - dispatchDragEvent(eventNames().dragleaveEvent, m_dragTarget.get(), event, clipboard);
|
| - }
|
| - } else {
|
| - if (newTarget)
|
| - if (newTarget->hasTagName(frameTag) || newTarget->hasTagName(iframeTag))
|
| - accept = static_cast<HTMLFrameElementBase*>(newTarget)->contentFrame()->eventHandler()->updateDragAndDrop(event, clipboard);
|
| - else
|
| - accept = dispatchDragEvent(eventNames().dragoverEvent, newTarget, event, clipboard);
|
| - }
|
| - m_dragTarget = newTarget;
|
| -
|
| - return accept;
|
| -}
|
| -
|
| -void EventHandler::cancelDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| -{
|
| - if (m_dragTarget) {
|
| - Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| - ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| - if (frame)
|
| - frame->eventHandler()->cancelDragAndDrop(event, clipboard);
|
| - else
|
| - dispatchDragEvent(eventNames().dragleaveEvent, m_dragTarget.get(), event, clipboard);
|
| - }
|
| - clearDragState();
|
| -}
|
| -
|
| -bool EventHandler::performDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| -{
|
| - bool accept = false;
|
| - if (m_dragTarget) {
|
| - Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| - ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| - if (frame)
|
| - accept = frame->eventHandler()->performDragAndDrop(event, clipboard);
|
| - else
|
| - accept = dispatchDragEvent(eventNames().dropEvent, m_dragTarget.get(), event, clipboard);
|
| - }
|
| - clearDragState();
|
| - return accept;
|
| -}
|
| -
|
| -void EventHandler::clearDragState()
|
| -{
|
| - m_dragTarget = 0;
|
| - m_capturingMouseEventsNode = 0;
|
| -#if PLATFORM(MAC)
|
| - m_sendingEventToSubview = false;
|
| -#endif
|
| -}
|
| -
|
| -void EventHandler::setCapturingMouseEventsNode(PassRefPtr<Node> n)
|
| -{
|
| - m_capturingMouseEventsNode = n;
|
| -}
|
| -
|
| -MouseEventWithHitTestResults EventHandler::prepareMouseEvent(const HitTestRequest& request, const PlatformMouseEvent& mev)
|
| -{
|
| - ASSERT(m_frame);
|
| - ASSERT(m_frame->document());
|
| -
|
| - IntPoint documentPoint = m_frame->view()->windowToContents(mev.pos());
|
| - return m_frame->document()->prepareMouseEvent(request, documentPoint, mev);
|
| -}
|
| -
|
| -#if ENABLE(SVG)
|
| -static inline SVGElementInstance* instanceAssociatedWithShadowTreeElement(Node* referenceNode)
|
| -{
|
| - if (!referenceNode || !referenceNode->isSVGElement())
|
| - return 0;
|
| -
|
| - Node* shadowTreeElement = referenceNode->shadowTreeRootNode();
|
| - if (!shadowTreeElement)
|
| - return 0;
|
| -
|
| - Node* shadowTreeParentElement = shadowTreeElement->shadowParentNode();
|
| - if (!shadowTreeParentElement)
|
| - return 0;
|
| -
|
| - ASSERT(shadowTreeParentElement->hasTagName(useTag));
|
| - return static_cast<SVGUseElement*>(shadowTreeParentElement)->instanceForShadowTreeElement(referenceNode);
|
| -}
|
| -#endif
|
| -
|
| -void EventHandler::updateMouseEventTargetNode(Node* targetNode, const PlatformMouseEvent& mouseEvent, bool fireMouseOverOut)
|
| -{
|
| - Node* result = targetNode;
|
| -
|
| - // If we're capturing, we always go right to that node.
|
| - if (m_capturingMouseEventsNode)
|
| - result = m_capturingMouseEventsNode.get();
|
| - else {
|
| - // If the target node is a text node, dispatch on the parent node - rdar://4196646
|
| - if (result && result->isTextNode())
|
| - result = result->parentNode();
|
| - if (result)
|
| - result = result->shadowAncestorNode();
|
| - }
|
| - m_nodeUnderMouse = result;
|
| -#if ENABLE(SVG)
|
| - m_instanceUnderMouse = instanceAssociatedWithShadowTreeElement(result);
|
| -
|
| - // <use> shadow tree elements may have been recloned, update node under mouse in any case
|
| - if (m_lastInstanceUnderMouse) {
|
| - SVGElement* lastCorrespondingElement = m_lastInstanceUnderMouse->correspondingElement();
|
| - SVGElement* lastCorrespondingUseElement = m_lastInstanceUnderMouse->correspondingUseElement();
|
| -
|
| - if (lastCorrespondingElement && lastCorrespondingUseElement) {
|
| - HashSet<SVGElementInstance*> instances = lastCorrespondingElement->instancesForElement();
|
| -
|
| - // Locate the recloned shadow tree element for our corresponding instance
|
| - HashSet<SVGElementInstance*>::iterator end = instances.end();
|
| - for (HashSet<SVGElementInstance*>::iterator it = instances.begin(); it != end; ++it) {
|
| - SVGElementInstance* instance = (*it);
|
| - ASSERT(instance->correspondingElement() == lastCorrespondingElement);
|
| -
|
| - if (instance == m_lastInstanceUnderMouse)
|
| - continue;
|
| -
|
| - if (instance->correspondingUseElement() != lastCorrespondingUseElement)
|
| - continue;
|
| -
|
| - SVGElement* shadowTreeElement = instance->shadowTreeElement();
|
| - if (!shadowTreeElement->inDocument() || m_lastNodeUnderMouse == shadowTreeElement)
|
| - continue;
|
| -
|
| - m_lastNodeUnderMouse = shadowTreeElement;
|
| - m_lastInstanceUnderMouse = instance;
|
| - break;
|
| - }
|
| - }
|
| - }
|
| -#endif
|
| -
|
| - // Fire mouseout/mouseover if the mouse has shifted to a different node.
|
| - if (fireMouseOverOut) {
|
| - if (m_lastNodeUnderMouse && m_lastNodeUnderMouse->document() != m_frame->document()) {
|
| - m_lastNodeUnderMouse = 0;
|
| - m_lastScrollbarUnderMouse = 0;
|
| -#if ENABLE(SVG)
|
| - m_lastInstanceUnderMouse = 0;
|
| -#endif
|
| - }
|
| -
|
| - if (m_lastNodeUnderMouse != m_nodeUnderMouse) {
|
| - // send mouseout event to the old node
|
| - if (m_lastNodeUnderMouse)
|
| - EventTargetNodeCast(m_lastNodeUnderMouse.get())->dispatchMouseEvent(mouseEvent, eventNames().mouseoutEvent, 0, m_nodeUnderMouse.get());
|
| - // send mouseover event to the new node
|
| - if (m_nodeUnderMouse)
|
| - EventTargetNodeCast(m_nodeUnderMouse.get())->dispatchMouseEvent(mouseEvent, eventNames().mouseoverEvent, 0, m_lastNodeUnderMouse.get());
|
| - }
|
| - m_lastNodeUnderMouse = m_nodeUnderMouse;
|
| -#if ENABLE(SVG)
|
| - m_lastInstanceUnderMouse = instanceAssociatedWithShadowTreeElement(m_nodeUnderMouse.get());
|
| -#endif
|
| - }
|
| -}
|
| -
|
| -bool EventHandler::dispatchMouseEvent(const AtomicString& eventType, Node* targetNode, bool /*cancelable*/, int clickCount, const PlatformMouseEvent& mouseEvent, bool setUnder)
|
| -{
|
| - updateMouseEventTargetNode(targetNode, mouseEvent, setUnder);
|
| -
|
| - bool swallowEvent = false;
|
| -
|
| - if (m_nodeUnderMouse)
|
| - swallowEvent = EventTargetNodeCast(m_nodeUnderMouse.get())->dispatchMouseEvent(mouseEvent, eventType, clickCount);
|
| -
|
| - if (!swallowEvent && eventType == eventNames().mousedownEvent) {
|
| - // Blur current focus node when a link/button is clicked; this
|
| - // is expected by some sites that rely on onChange handlers running
|
| - // from form fields before the button click is processed.
|
| - Node* node = m_nodeUnderMouse.get();
|
| - RenderObject* renderer = node ? node->renderer() : 0;
|
| -
|
| - // Walk up the render tree to search for a node to focus.
|
| - // Walking up the DOM tree wouldn't work for shadow trees, like those behind the engine-based text fields.
|
| - while (renderer) {
|
| - node = renderer->element();
|
| - if (node && node->isFocusable()) {
|
| - // To fix <rdar://problem/4895428> Can't drag selected ToDo, we don't focus a
|
| - // node on mouse down if it's selected and inside a focused node. It will be
|
| - // focused if the user does a mouseup over it, however, because the mouseup
|
| - // will set a selection inside it, which will call setFocuseNodeIfNeeded.
|
| - ExceptionCode ec = 0;
|
| - Node* n = node->isShadowNode() ? node->shadowParentNode() : node;
|
| - if (m_frame->selection()->isRange() &&
|
| - m_frame->selection()->toRange()->compareNode(n, ec) == Range::NODE_INSIDE &&
|
| - n->isDescendantOf(m_frame->document()->focusedNode()))
|
| - return false;
|
| -
|
| - break;
|
| - }
|
| -
|
| - renderer = renderer->parent();
|
| - }
|
| - // If focus shift is blocked, we eat the event. Note we should never clear swallowEvent
|
| - // if the page already set it (e.g., by canceling default behavior).
|
| - if (node && node->isMouseFocusable()) {
|
| - if (!m_frame->page()->focusController()->setFocusedNode(node, m_frame))
|
| - swallowEvent = true;
|
| - } else if (!node || !node->focused()) {
|
| - if (!m_frame->page()->focusController()->setFocusedNode(0, m_frame))
|
| - swallowEvent = true;
|
| - }
|
| - }
|
| -
|
| - return swallowEvent;
|
| -}
|
| -
|
| -bool EventHandler::handleWheelEvent(PlatformWheelEvent& e)
|
| -{
|
| - Document* doc = m_frame->document();
|
| - if (!doc)
|
| - return false;
|
| -
|
| - RenderObject* docRenderer = doc->renderer();
|
| - if (!docRenderer)
|
| - return false;
|
| -
|
| - RefPtr<FrameView> protector(m_frame->view());
|
| -
|
| - IntPoint vPoint = m_frame->view()->windowToContents(e.pos());
|
| -
|
| - HitTestRequest request(HitTestRequest::ReadOnly);
|
| - HitTestResult result(vPoint);
|
| - doc->renderView()->layer()->hitTest(request, result);
|
| - Node* node = result.innerNode();
|
| -
|
| - if (node) {
|
| - // Figure out which view to send the event to.
|
| - RenderObject* target = node->renderer();
|
| -
|
| - if (result.isOverWidget() && target && target->isWidget()) {
|
| - Widget* widget = static_cast<RenderWidget*>(target)->widget();
|
| -
|
| - if (widget && passWheelEventToWidget(e, widget)) {
|
| - e.accept();
|
| - return true;
|
| - }
|
| - }
|
| -
|
| - node = node->shadowAncestorNode();
|
| - EventTargetNodeCast(node)->dispatchWheelEvent(e);
|
| - if (e.isAccepted())
|
| - return true;
|
| -
|
| - if (node->renderer()) {
|
| - // Just break up into two scrolls if we need to. Diagonal movement on
|
| - // a MacBook pro is an example of a 2-dimensional mouse wheel event (where both deltaX and deltaY can be set).
|
| - scrollAndAcceptEvent(e.deltaX(), ScrollLeft, ScrollRight, e, node);
|
| - scrollAndAcceptEvent(e.deltaY(), ScrollUp, ScrollDown, e, node);
|
| - }
|
| - }
|
| -
|
| - if (!e.isAccepted())
|
| - m_frame->view()->wheelEvent(e);
|
| -
|
| - return e.isAccepted();
|
| -}
|
| -
|
| -bool EventHandler::sendContextMenuEvent(const PlatformMouseEvent& event)
|
| -{
|
| - Document* doc = m_frame->document();
|
| - FrameView* v = m_frame->view();
|
| - if (!doc || !v)
|
| - return false;
|
| -
|
| - bool swallowEvent;
|
| - IntPoint viewportPos = v->windowToContents(event.pos());
|
| - HitTestRequest request(HitTestRequest::Active);
|
| - MouseEventWithHitTestResults mev = doc->prepareMouseEvent(request, viewportPos, event);
|
| -
|
| - // Context menu events shouldn't select text in GTK+ applications or in Chromium.
|
| - // FIXME: This should probably be configurable by embedders. Consider making it a WebPreferences setting.
|
| - // See: https://bugs.webkit.org/show_bug.cgi?id=15279
|
| -#if !PLATFORM(GTK) && !PLATFORM(CHROMIUM)
|
| - if (!m_frame->selection()->contains(viewportPos) &&
|
| - // FIXME: In the editable case, word selection sometimes selects content that isn't underneath the mouse.
|
| - // If the selection is non-editable, we do word selection to make it easier to use the contextual menu items
|
| - // available for text selections. But only if we're above text.
|
| - (m_frame->selection()->isContentEditable() || mev.targetNode() && mev.targetNode()->isTextNode())) {
|
| - m_mouseDownMayStartSelect = true; // context menu events are always allowed to perform a selection
|
| - selectClosestWordOrLinkFromMouseEvent(mev);
|
| - }
|
| -#endif
|
| -
|
| - swallowEvent = dispatchMouseEvent(eventNames().contextmenuEvent, mev.targetNode(), true, 0, event, true);
|
| -
|
| - return swallowEvent;
|
| -}
|
| -
|
| -void EventHandler::scheduleHoverStateUpdate()
|
| -{
|
| - if (!m_hoverTimer.isActive())
|
| - m_hoverTimer.startOneShot(0);
|
| -}
|
| -
|
| -// Whether or not a mouse down can begin the creation of a selection. Fires the selectStart event.
|
| -bool EventHandler::canMouseDownStartSelect(Node* node)
|
| -{
|
| - if (!node || !node->renderer())
|
| - return true;
|
| -
|
| - // Some controls and images can't start a select on a mouse down.
|
| - if (!node->canStartSelection())
|
| - return false;
|
| -
|
| - for (RenderObject* curr = node->renderer(); curr; curr = curr->parent())
|
| - if (Node* node = curr->element())
|
| - return EventTargetNodeCast(node)->dispatchEventForType(eventNames().selectstartEvent, true, true);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::canMouseDragExtendSelect(Node* node)
|
| -{
|
| - if (!node || !node->renderer())
|
| - return true;
|
| -
|
| - for (RenderObject* curr = node->renderer(); curr; curr = curr->parent())
|
| - if (Node* node = curr->element())
|
| - return EventTargetNodeCast(node)->dispatchEventForType(eventNames().selectstartEvent, true, true);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -void EventHandler::setResizingFrameSet(HTMLFrameSetElement* frameSet)
|
| -{
|
| - m_frameSetBeingResized = frameSet;
|
| -}
|
| -
|
| -void EventHandler::resizeLayerDestroyed()
|
| -{
|
| - ASSERT(m_resizeLayer);
|
| - m_resizeLayer = 0;
|
| -}
|
| -
|
| -void EventHandler::hoverTimerFired(Timer<EventHandler>*)
|
| -{
|
| - m_hoverTimer.stop();
|
| -
|
| - ASSERT(m_frame);
|
| - ASSERT(m_frame->document());
|
| -
|
| - if (RenderView* renderer = m_frame->contentRenderer()) {
|
| - HitTestRequest request(HitTestRequest::MouseMove);
|
| - HitTestResult result(m_frame->view()->windowToContents(m_currentMousePosition));
|
| - renderer->layer()->hitTest(request, result);
|
| - m_frame->document()->updateRendering();
|
| - }
|
| -}
|
| -
|
| -static EventTargetNode* eventTargetNodeForDocument(Document* doc)
|
| -{
|
| - if (!doc)
|
| - return 0;
|
| - Node* node = doc->focusedNode();
|
| - if (!node) {
|
| - if (doc->isHTMLDocument())
|
| - node = doc->body();
|
| - else
|
| - node = doc->documentElement();
|
| - if (!node)
|
| - return 0;
|
| - }
|
| - return EventTargetNodeCast(node);
|
| -}
|
| -
|
| -bool EventHandler::handleAccessKey(const PlatformKeyboardEvent& evt)
|
| -{
|
| - // FIXME: Ignoring the state of Shift key is what neither IE nor Firefox do.
|
| - // IE matches lower and upper case access keys regardless of Shift key state - but if both upper and
|
| - // lower case variants are present in a document, the correct element is matched based on Shift key state.
|
| - // Firefox only matches an access key if Shift is not pressed, and does that case-insensitively.
|
| - ASSERT(!(accessKeyModifiers() & PlatformKeyboardEvent::ShiftKey));
|
| - if ((evt.modifiers() & ~PlatformKeyboardEvent::ShiftKey) != accessKeyModifiers())
|
| - return false;
|
| - String key = evt.unmodifiedText();
|
| - Element* elem = m_frame->document()->getElementByAccessKey(key.lower());
|
| - if (!elem)
|
| - return false;
|
| - elem->accessKeyAction(false);
|
| - return true;
|
| -}
|
| -
|
| -#if !PLATFORM(MAC)
|
| -bool EventHandler::needsKeyboardEventDisambiguationQuirks() const
|
| -{
|
| - return false;
|
| -}
|
| -#endif
|
| -
|
| -bool EventHandler::keyEvent(const PlatformKeyboardEvent& initialKeyEvent)
|
| -{
|
| -#if ENABLE(PAN_SCROLLING)
|
| - if (m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() || m_autoscrollInProgress) {
|
| - String escKeyId = "U+001B";
|
| - // If a key is pressed while the autoscroll/panScroll is in progress then we want to stop
|
| - if (initialKeyEvent.keyIdentifier() == escKeyId && initialKeyEvent.type() == PlatformKeyboardEvent::KeyUp)
|
| - stopAutoscrollTimer();
|
| -
|
| - // If we were in autoscroll/panscroll mode, we swallow the key event
|
| - return true;
|
| - }
|
| -#endif
|
| -
|
| - // Check for cases where we are too early for events -- possible unmatched key up
|
| - // from pressing return in the location bar.
|
| - RefPtr<EventTargetNode> node = eventTargetNodeForDocument(m_frame->document());
|
| - if (!node)
|
| - return false;
|
| -
|
| - // FIXME: what is this doing here, in keyboard event handler?
|
| - m_frame->loader()->resetMultipleFormSubmissionProtection();
|
| -
|
| - // In IE, access keys are special, they are handled after default keydown processing, but cannot be canceled - this is hard to match.
|
| - // On Mac OS X, we process them before dispatching keydown, as the default keydown handler implements Emacs key bindings, which may conflict
|
| - // with access keys. Then we dispatch keydown, but suppress its default handling.
|
| - // On Windows, WebKit explicitly calls handleAccessKey() instead of dispatching a keypress event for WM_SYSCHAR messages.
|
| - // Other platforms currently match either Mac or Windows behavior, depending on whether they send combined KeyDown events.
|
| - bool matchedAnAccessKey = false;
|
| - if (initialKeyEvent.type() == PlatformKeyboardEvent::KeyDown)
|
| - matchedAnAccessKey = handleAccessKey(initialKeyEvent);
|
| -
|
| - // FIXME: it would be fair to let an input method handle KeyUp events before DOM dispatch.
|
| - if (initialKeyEvent.type() == PlatformKeyboardEvent::KeyUp || initialKeyEvent.type() == PlatformKeyboardEvent::Char)
|
| - return !node->dispatchKeyEvent(initialKeyEvent);
|
| -
|
| - bool backwardCompatibilityMode = needsKeyboardEventDisambiguationQuirks();
|
| -
|
| - ExceptionCode ec;
|
| - PlatformKeyboardEvent keyDownEvent = initialKeyEvent;
|
| - if (keyDownEvent.type() != PlatformKeyboardEvent::RawKeyDown)
|
| - keyDownEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::RawKeyDown, backwardCompatibilityMode);
|
| - RefPtr<KeyboardEvent> keydown = KeyboardEvent::create(keyDownEvent, m_frame->document()->defaultView());
|
| - if (matchedAnAccessKey)
|
| - keydown->setDefaultPrevented(true);
|
| - keydown->setTarget(node);
|
| -
|
| - if (initialKeyEvent.type() == PlatformKeyboardEvent::RawKeyDown) {
|
| - node->dispatchEvent(keydown, ec);
|
| - return keydown->defaultHandled() || keydown->defaultPrevented();
|
| - }
|
| -
|
| - // Run input method in advance of DOM event handling. This may result in the IM
|
| - // modifying the page prior the keydown event, but this behaviour is necessary
|
| - // in order to match IE:
|
| - // 1. preventing default handling of keydown and keypress events has no effect on IM input;
|
| - // 2. if an input method handles the event, its keyCode is set to 229 in keydown event.
|
| - m_frame->editor()->handleInputMethodKeydown(keydown.get());
|
| -
|
| - bool handledByInputMethod = keydown->defaultHandled();
|
| -
|
| - if (handledByInputMethod) {
|
| - keyDownEvent.setWindowsVirtualKeyCode(CompositionEventKeyCode);
|
| - keydown = KeyboardEvent::create(keyDownEvent, m_frame->document()->defaultView());
|
| - keydown->setTarget(node);
|
| - keydown->setDefaultHandled();
|
| - }
|
| -
|
| - node->dispatchEvent(keydown, ec);
|
| - bool keydownResult = keydown->defaultHandled() || keydown->defaultPrevented();
|
| - if (handledByInputMethod || (keydownResult && !backwardCompatibilityMode))
|
| - return keydownResult;
|
| -
|
| - // Focus may have changed during keydown handling, so refetch node.
|
| - // But if we are dispatching a fake backward compatibility keypress, then we pretend that the keypress happened on the original node.
|
| - if (!keydownResult) {
|
| - node = eventTargetNodeForDocument(m_frame->document());
|
| - if (!node)
|
| - return false;
|
| - }
|
| -
|
| - PlatformKeyboardEvent keyPressEvent = initialKeyEvent;
|
| - keyPressEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::Char, backwardCompatibilityMode);
|
| - if (keyPressEvent.text().isEmpty())
|
| - return keydownResult;
|
| - RefPtr<KeyboardEvent> keypress = KeyboardEvent::create(keyPressEvent, m_frame->document()->defaultView());
|
| - keypress->setTarget(node);
|
| - if (keydownResult)
|
| - keypress->setDefaultPrevented(true);
|
| -#if PLATFORM(MAC)
|
| - keypress->keypressCommands() = keydown->keypressCommands();
|
| -#endif
|
| - node->dispatchEvent(keypress, ec);
|
| -
|
| - return keydownResult || keypress->defaultPrevented() || keypress->defaultHandled();
|
| -}
|
| -
|
| -void EventHandler::handleKeyboardSelectionMovement(KeyboardEvent* event)
|
| -{
|
| - if (!event)
|
| - return;
|
| -
|
| - String key = event->keyIdentifier();
|
| - bool isShifted = event->getModifierState("Shift");
|
| - bool isOptioned = event->getModifierState("Alt");
|
| -
|
| - if (key == "Up") {
|
| - m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::BACKWARD, LineGranularity, true);
|
| - event->setDefaultHandled();
|
| - }
|
| - else if (key == "Down") {
|
| - m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::FORWARD, LineGranularity, true);
|
| - event->setDefaultHandled();
|
| - }
|
| - else if (key == "Left") {
|
| - m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::LEFT, (isOptioned) ? WordGranularity : CharacterGranularity, true);
|
| - event->setDefaultHandled();
|
| - }
|
| - else if (key == "Right") {
|
| - m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::RIGHT, (isOptioned) ? WordGranularity : CharacterGranularity, true);
|
| - event->setDefaultHandled();
|
| - }
|
| -}
|
| -
|
| -void EventHandler::defaultKeyboardEventHandler(KeyboardEvent* event)
|
| -{
|
| - if (event->type() == eventNames().keydownEvent) {
|
| - m_frame->editor()->handleKeyboardEvent(event);
|
| - if (event->defaultHandled())
|
| - return;
|
| - if (event->keyIdentifier() == "U+0009")
|
| - defaultTabEventHandler(event);
|
| -
|
| - // provides KB navigation and selection for enhanced accessibility users
|
| - if (AXObjectCache::accessibilityEnhancedUserInterfaceEnabled())
|
| - handleKeyboardSelectionMovement(event);
|
| - }
|
| - if (event->type() == eventNames().keypressEvent) {
|
| - m_frame->editor()->handleKeyboardEvent(event);
|
| - if (event->defaultHandled())
|
| - return;
|
| - if (event->charCode() == ' ')
|
| - defaultSpaceEventHandler(event);
|
| - }
|
| -}
|
| -
|
| -bool EventHandler::dragHysteresisExceeded(const FloatPoint& floatDragViewportLocation) const
|
| -{
|
| - IntPoint dragViewportLocation((int)floatDragViewportLocation.x(), (int)floatDragViewportLocation.y());
|
| - return dragHysteresisExceeded(dragViewportLocation);
|
| -}
|
| -
|
| -bool EventHandler::dragHysteresisExceeded(const IntPoint& dragViewportLocation) const
|
| -{
|
| - IntPoint dragLocation = m_frame->view()->windowToContents(dragViewportLocation);
|
| - IntSize delta = dragLocation - m_mouseDownPos;
|
| -
|
| - int threshold = GeneralDragHysteresis;
|
| - if (dragState().m_dragSrcIsImage)
|
| - threshold = ImageDragHysteresis;
|
| - else if (dragState().m_dragSrcIsLink)
|
| - threshold = LinkDragHysteresis;
|
| - else if (dragState().m_dragSrcInSelection)
|
| - threshold = TextDragHysteresis;
|
| -
|
| - return abs(delta.width()) >= threshold || abs(delta.height()) >= threshold;
|
| -}
|
| -
|
| -void EventHandler::freeClipboard()
|
| -{
|
| - if (dragState().m_dragClipboard)
|
| - dragState().m_dragClipboard->setAccessPolicy(ClipboardNumb);
|
| -}
|
| -
|
| -bool EventHandler::shouldDragAutoNode(Node* node, const IntPoint& point) const
|
| -{
|
| - ASSERT(node);
|
| - if (node->hasChildNodes() || !m_frame->view())
|
| - return false;
|
| - return m_frame->page() && m_frame->page()->dragController()->mayStartDragAtEventLocation(m_frame, point);
|
| -}
|
| -
|
| -void EventHandler::dragSourceMovedTo(const PlatformMouseEvent& event)
|
| -{
|
| - if (dragState().m_dragSrc && dragState().m_dragSrcMayBeDHTML)
|
| - // for now we don't care if event handler cancels default behavior, since there is none
|
| - dispatchDragSrcEvent(eventNames().dragEvent, event);
|
| -}
|
| -
|
| -void EventHandler::dragSourceEndedAt(const PlatformMouseEvent& event, DragOperation operation)
|
| -{
|
| - if (dragState().m_dragSrc && dragState().m_dragSrcMayBeDHTML) {
|
| - dragState().m_dragClipboard->setDestinationOperation(operation);
|
| - // for now we don't care if event handler cancels default behavior, since there is none
|
| - dispatchDragSrcEvent(eventNames().dragendEvent, event);
|
| - }
|
| - freeClipboard();
|
| - dragState().m_dragSrc = 0;
|
| -}
|
| -
|
| -// returns if we should continue "default processing", i.e., whether eventhandler canceled
|
| -bool EventHandler::dispatchDragSrcEvent(const AtomicString& eventType, const PlatformMouseEvent& event)
|
| -{
|
| - return !dispatchDragEvent(eventType, dragState().m_dragSrc.get(), event, dragState().m_dragClipboard.get());
|
| -}
|
| -
|
| -bool EventHandler::handleDrag(const MouseEventWithHitTestResults& event)
|
| -{
|
| - if (event.event().button() != LeftButton || event.event().eventType() != MouseEventMoved) {
|
| - // If we allowed the other side of the bridge to handle a drag
|
| - // last time, then m_mousePressed might still be set. So we
|
| - // clear it now to make sure the next move after a drag
|
| - // doesn't look like a drag.
|
| - m_mousePressed = false;
|
| - return false;
|
| - }
|
| -
|
| - if (eventLoopHandleMouseDragged(event))
|
| - return true;
|
| -
|
| - // Careful that the drag starting logic stays in sync with eventMayStartDrag()
|
| -
|
| - if (m_mouseDownMayStartDrag && !dragState().m_dragSrc) {
|
| - allowDHTMLDrag(dragState().m_dragSrcMayBeDHTML, dragState().m_dragSrcMayBeUA);
|
| - if (!dragState().m_dragSrcMayBeDHTML && !dragState().m_dragSrcMayBeUA)
|
| - m_mouseDownMayStartDrag = false; // no element is draggable
|
| - }
|
| -
|
| - if (m_mouseDownMayStartDrag && !dragState().m_dragSrc) {
|
| - // try to find an element that wants to be dragged
|
| - HitTestRequest request(HitTestRequest::ReadOnly);
|
| - HitTestResult result(m_mouseDownPos);
|
| - m_frame->contentRenderer()->layer()->hitTest(request, result);
|
| - Node* node = result.innerNode();
|
| - if (node && node->renderer())
|
| - dragState().m_dragSrc = node->renderer()->draggableNode(dragState().m_dragSrcMayBeDHTML, dragState().m_dragSrcMayBeUA,
|
| - m_mouseDownPos.x(), m_mouseDownPos.y(), dragState().m_dragSrcIsDHTML);
|
| - else
|
| - dragState().m_dragSrc = 0;
|
| -
|
| - if (!dragState().m_dragSrc)
|
| - m_mouseDownMayStartDrag = false; // no element is draggable
|
| - else {
|
| - // remember some facts about this source, while we have a HitTestResult handy
|
| - node = result.URLElement();
|
| - dragState().m_dragSrcIsLink = node && node->isLink();
|
| -
|
| - node = result.innerNonSharedNode();
|
| - dragState().m_dragSrcIsImage = node && node->renderer() && node->renderer()->isImage();
|
| -
|
| - dragState().m_dragSrcInSelection = m_frame->selection()->contains(m_mouseDownPos);
|
| - }
|
| - }
|
| -
|
| - // For drags starting in the selection, the user must wait between the mousedown and mousedrag,
|
| - // or else we bail on the dragging stuff and allow selection to occur
|
| - if (m_mouseDownMayStartDrag && !dragState().m_dragSrcIsImage && dragState().m_dragSrcInSelection && event.event().timestamp() - m_mouseDownTimestamp < TextDragDelay) {
|
| - m_mouseDownMayStartDrag = false;
|
| - dragState().m_dragSrc = 0;
|
| - // ...but if this was the first click in the window, we don't even want to start selection
|
| - if (eventActivatedView(event.event()))
|
| - m_mouseDownMayStartSelect = false;
|
| - }
|
| -
|
| - if (!m_mouseDownMayStartDrag)
|
| - return !mouseDownMayStartSelect() && !m_mouseDownMayStartAutoscroll;
|
| -
|
| - // We are starting a text/image/url drag, so the cursor should be an arrow
|
| - m_frame->view()->setCursor(pointerCursor());
|
| -
|
| - if (!dragHysteresisExceeded(event.event().pos()))
|
| - return true;
|
| -
|
| - // Once we're past the hysteresis point, we don't want to treat this gesture as a click
|
| - invalidateClick();
|
| -
|
| - DragOperation srcOp = DragOperationNone;
|
| -
|
| - freeClipboard(); // would only happen if we missed a dragEnd. Do it anyway, just
|
| - // to make sure it gets numbified
|
| - dragState().m_dragClipboard = createDraggingClipboard();
|
| -
|
| - if (dragState().m_dragSrcMayBeDHTML) {
|
| - // Check to see if the is a DOM based drag, if it is get the DOM specified drag
|
| - // image and offset
|
| - if (dragState().m_dragSrcIsDHTML) {
|
| - if (RenderObject* renderer = dragState().m_dragSrc->renderer()) {
|
| - // FIXME: This doesn't work correctly with transforms.
|
| - FloatPoint absPos = renderer->localToAbsolute();
|
| - IntSize delta = m_mouseDownPos - roundedIntPoint(absPos);
|
| - dragState().m_dragClipboard->setDragImageElement(dragState().m_dragSrc.get(), IntPoint() + delta);
|
| - } else {
|
| - // The renderer has disappeared, this can happen if the onStartDrag handler has hidden
|
| - // the element in some way. In this case we just kill the drag.
|
| - m_mouseDownMayStartDrag = false;
|
| - goto cleanupDrag;
|
| - }
|
| - }
|
| -
|
| - m_mouseDownMayStartDrag = dispatchDragSrcEvent(eventNames().dragstartEvent, m_mouseDown)
|
| - && !m_frame->selection()->isInPasswordField();
|
| -
|
| - // Invalidate clipboard here against anymore pasteboard writing for security. The drag
|
| - // image can still be changed as we drag, but not the pasteboard data.
|
| - dragState().m_dragClipboard->setAccessPolicy(ClipboardImageWritable);
|
| -
|
| - if (m_mouseDownMayStartDrag) {
|
| - // gather values from DHTML element, if it set any
|
| - dragState().m_dragClipboard->sourceOperation(srcOp);
|
| -
|
| - // Yuck, dragSourceMovedTo() can be called as a result of kicking off the drag with
|
| - // dragImage! Because of that dumb reentrancy, we may think we've not started the
|
| - // drag when that happens. So we have to assume it's started before we kick it off.
|
| - dragState().m_dragClipboard->setDragHasStarted();
|
| - }
|
| - }
|
| -
|
| - if (m_mouseDownMayStartDrag) {
|
| - DragController* dragController = m_frame->page() ? m_frame->page()->dragController() : 0;
|
| - bool startedDrag = dragController && dragController->startDrag(m_frame, dragState().m_dragClipboard.get(), srcOp, event.event(), m_mouseDownPos, dragState().m_dragSrcIsDHTML);
|
| - if (!startedDrag && dragState().m_dragSrcMayBeDHTML) {
|
| - // Drag was canned at the last minute - we owe m_dragSrc a DRAGEND event
|
| - dispatchDragSrcEvent(eventNames().dragendEvent, event.event());
|
| - m_mouseDownMayStartDrag = false;
|
| - }
|
| - }
|
| -
|
| -cleanupDrag:
|
| - if (!m_mouseDownMayStartDrag) {
|
| - // something failed to start the drag, cleanup
|
| - freeClipboard();
|
| - dragState().m_dragSrc = 0;
|
| - }
|
| -
|
| - // No more default handling (like selection), whether we're past the hysteresis bounds or not
|
| - return true;
|
| -}
|
| -
|
| -bool EventHandler::handleTextInputEvent(const String& text, Event* underlyingEvent, bool isLineBreak, bool isBackTab)
|
| -{
|
| - // Platforms should differentiate real commands like selectAll from text input in disguise (like insertNewline),
|
| - // and avoid dispatching text input events from keydown default handlers.
|
| - ASSERT(!underlyingEvent || !underlyingEvent->isKeyboardEvent() || static_cast<KeyboardEvent*>(underlyingEvent)->type() == eventNames().keypressEvent);
|
| -
|
| - if (!m_frame)
|
| - return false;
|
| -
|
| - EventTarget* target;
|
| - if (underlyingEvent)
|
| - target = underlyingEvent->target();
|
| - else
|
| - target = eventTargetNodeForDocument(m_frame->document());
|
| - if (!target)
|
| - return false;
|
| -
|
| - RefPtr<TextEvent> event = TextEvent::create(m_frame->domWindow(), text);
|
| - event->setUnderlyingEvent(underlyingEvent);
|
| - event->setIsLineBreak(isLineBreak);
|
| - event->setIsBackTab(isBackTab);
|
| - ExceptionCode ec;
|
| - target->dispatchEvent(event, ec);
|
| - return event->defaultHandled();
|
| -}
|
| -
|
| -
|
| -#if !PLATFORM(MAC) && !PLATFORM(QT)
|
| -bool EventHandler::invertSenseOfTabsToLinks(KeyboardEvent*) const
|
| -{
|
| - return false;
|
| -}
|
| -#endif
|
| -
|
| -bool EventHandler::tabsToLinks(KeyboardEvent* event) const
|
| -{
|
| - Page* page = m_frame->page();
|
| - if (!page)
|
| - return false;
|
| -
|
| - if (page->chrome()->client()->tabsToLinks())
|
| - return !invertSenseOfTabsToLinks(event);
|
| -
|
| - return invertSenseOfTabsToLinks(event);
|
| -}
|
| -
|
| -void EventHandler::defaultTextInputEventHandler(TextEvent* event)
|
| -{
|
| - String data = event->data();
|
| - if (data == "\n") {
|
| - if (event->isLineBreak()) {
|
| - if (m_frame->editor()->insertLineBreak())
|
| - event->setDefaultHandled();
|
| - } else {
|
| - if (m_frame->editor()->insertParagraphSeparator())
|
| - event->setDefaultHandled();
|
| - }
|
| - } else {
|
| - if (m_frame->editor()->insertTextWithoutSendingTextEvent(data, false, event))
|
| - event->setDefaultHandled();
|
| - }
|
| -}
|
| -
|
| -#if PLATFORM(QT) || PLATFORM(MAC)
|
| -
|
| -// These two platforms handle the space event in the platform-specific WebKit code.
|
| -// Eventually it would be good to eliminate that and use the code here instead, but
|
| -// the Qt version is inside an ifdef and the Mac version has some extra behavior
|
| -// so we can't unify everything yet.
|
| -void EventHandler::defaultSpaceEventHandler(KeyboardEvent*)
|
| -{
|
| -}
|
| -
|
| -#else
|
| -
|
| -void EventHandler::defaultSpaceEventHandler(KeyboardEvent* event)
|
| -{
|
| - ScrollDirection direction = event->shiftKey() ? ScrollUp : ScrollDown;
|
| - if (scrollOverflow(direction, ScrollByPage)) {
|
| - event->setDefaultHandled();
|
| - return;
|
| - }
|
| -
|
| - FrameView* view = m_frame->view();
|
| - if (!view)
|
| - return;
|
| -
|
| - if (view->scroll(direction, ScrollByPage))
|
| - event->setDefaultHandled();
|
| -}
|
| -
|
| -#endif
|
| -
|
| -void EventHandler::defaultTabEventHandler(KeyboardEvent* event)
|
| -{
|
| - // We should only advance focus on tabs if no special modifier keys are held down.
|
| - if (event->ctrlKey() || event->metaKey() || event->altGraphKey())
|
| - return;
|
| -
|
| - Page* page = m_frame->page();
|
| - if (!page)
|
| - return;
|
| - if (!page->tabKeyCyclesThroughElements())
|
| - return;
|
| -
|
| - FocusDirection focusDirection = event->shiftKey() ? FocusDirectionBackward : FocusDirectionForward;
|
| -
|
| - // Tabs can be used in design mode editing.
|
| - if (m_frame->document()->inDesignMode())
|
| - return;
|
| -
|
| - if (page->focusController()->advanceFocus(focusDirection, event))
|
| - event->setDefaultHandled();
|
| -}
|
| -
|
| -void EventHandler::capsLockStateMayHaveChanged()
|
| -{
|
| - if (Document* d = m_frame->document())
|
| - if (Node* node = d->focusedNode())
|
| - if (RenderObject* r = node->renderer())
|
| - r->capsLockStateMayHaveChanged();
|
| -}
|
| -
|
| -unsigned EventHandler::pendingFrameUnloadEventCount()
|
| -{
|
| - return m_pendingFrameUnloadEventCount;
|
| -}
|
| -
|
| -void EventHandler::addPendingFrameUnloadEventCount()
|
| -{
|
| - m_pendingFrameUnloadEventCount += 1;
|
| - m_frame->page()->changePendingUnloadEventCount(1);
|
| - return;
|
| -}
|
| -
|
| -void EventHandler::removePendingFrameUnloadEventCount()
|
| -{
|
| - ASSERT( (-1 + (int)m_pendingFrameUnloadEventCount) >= 0 );
|
| - m_pendingFrameUnloadEventCount -= 1;
|
| - m_frame->page()->changePendingUnloadEventCount(-1);
|
| - return;
|
| -}
|
| -
|
| -void EventHandler::clearPendingFrameUnloadEventCount()
|
| -{
|
| - m_frame->page()->changePendingUnloadEventCount(-((int)m_pendingFrameUnloadEventCount));
|
| - m_pendingFrameUnloadEventCount = 0;
|
| - return;
|
| -}
|
| -
|
| -void EventHandler::sendResizeEvent()
|
| -{
|
| - if (Document* doc = m_frame->document())
|
| - doc->dispatchWindowEvent(eventNames().resizeEvent, false, false);
|
| -}
|
| -
|
| -void EventHandler::sendScrollEvent()
|
| -{
|
| - FrameView* v = m_frame->view();
|
| - if (!v)
|
| - return;
|
| - v->setWasScrolledByUser(true);
|
| - Document* doc = m_frame->document();
|
| - if (!doc)
|
| - return;
|
| - doc->dispatchEventForType(eventNames().scrollEvent, true, false);
|
| -}
|
| -
|
| -unsigned EventHandler::pendingFrameBeforeUnloadEventCount()
|
| -{
|
| - return m_pendingFrameBeforeUnloadEventCount;
|
| -}
|
| -
|
| -void EventHandler::addPendingFrameBeforeUnloadEventCount()
|
| -{
|
| - m_pendingFrameBeforeUnloadEventCount += 1;
|
| - m_frame->page()->changePendingBeforeUnloadEventCount(1);
|
| - return;
|
| -}
|
| -
|
| -void EventHandler::removePendingFrameBeforeUnloadEventCount()
|
| -{
|
| - ASSERT( (-1 + (int)m_pendingFrameBeforeUnloadEventCount) >= 0 );
|
| - m_pendingFrameBeforeUnloadEventCount -= 1;
|
| - m_frame->page()->changePendingBeforeUnloadEventCount(-1);
|
| - return;
|
| -}
|
| -
|
| - void EventHandler::clearPendingFrameBeforeUnloadEventCount()
|
| -{
|
| - m_frame->page()->changePendingBeforeUnloadEventCount(-((int)m_pendingFrameBeforeUnloadEventCount));
|
| - m_pendingFrameBeforeUnloadEventCount = 0;
|
| - return;
|
| -}
|
| -
|
| -bool EventHandler::passMousePressEventToScrollbar(MouseEventWithHitTestResults& mev, Scrollbar* scrollbar)
|
| -{
|
| - if (!scrollbar || !scrollbar->enabled())
|
| - return false;
|
| - return scrollbar->mouseDown(mev.event());
|
| -}
|
| -
|
| -}
|
| +/*
|
| + * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
|
| + * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
|
| + *
|
| + * Redistribution and use in source and binary forms, with or without
|
| + * modification, are permitted provided that the following conditions
|
| + * are met:
|
| + * 1. Redistributions of source code must retain the above copyright
|
| + * notice, this list of conditions and the following disclaimer.
|
| + * 2. Redistributions in binary form must reproduce the above copyright
|
| + * notice, this list of conditions and the following disclaimer in the
|
| + * documentation and/or other materials provided with the distribution.
|
| + *
|
| + * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
|
| + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
| + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
|
| + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
| + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
| + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
| + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
|
| + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
| + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
| + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
| + */
|
| +
|
| +#include "config.h"
|
| +#include "EventHandler.h"
|
| +
|
| +#include "AXObjectCache.h"
|
| +#include "CachedImage.h"
|
| +#include "ChromeClient.h"
|
| +#include "Cursor.h"
|
| +#include "Document.h"
|
| +#include "DragController.h"
|
| +#include "Editor.h"
|
| +#include "EventNames.h"
|
| +#include "FloatPoint.h"
|
| +#include "FloatRect.h"
|
| +#include "FocusController.h"
|
| +#include "Frame.h"
|
| +#include "FrameLoader.h"
|
| +#include "FrameTree.h"
|
| +#include "FrameView.h"
|
| +#include "HitTestRequest.h"
|
| +#include "HitTestResult.h"
|
| +#include "HTMLFrameSetElement.h"
|
| +#include "HTMLFrameElementBase.h"
|
| +#include "HTMLInputElement.h"
|
| +#include "HTMLNames.h"
|
| +#include "Image.h"
|
| +#include "InspectorController.h"
|
| +#include "KeyboardEvent.h"
|
| +#include "MouseEvent.h"
|
| +#include "MouseEventWithHitTestResults.h"
|
| +#include "Page.h"
|
| +#include "PlatformKeyboardEvent.h"
|
| +#include "PlatformWheelEvent.h"
|
| +#include "RenderFrameSet.h"
|
| +#include "RenderWidget.h"
|
| +#include "RenderView.h"
|
| +#include "Scrollbar.h"
|
| +#include "SelectionController.h"
|
| +#include "Settings.h"
|
| +#include "TextEvent.h"
|
| +#include <wtf/StdLibExtras.h>
|
| +
|
| +#if ENABLE(SVG)
|
| +#include "SVGDocument.h"
|
| +#include "SVGElementInstance.h"
|
| +#include "SVGNames.h"
|
| +#include "SVGUseElement.h"
|
| +#endif
|
| +
|
| +namespace WebCore {
|
| +
|
| +using namespace HTMLNames;
|
| +
|
| +// The link drag hysteresis is much larger than the others because there
|
| +// needs to be enough space to cancel the link press without starting a link drag,
|
| +// and because dragging links is rare.
|
| +const int LinkDragHysteresis = 40;
|
| +const int ImageDragHysteresis = 5;
|
| +const int TextDragHysteresis = 3;
|
| +const int GeneralDragHysteresis = 3;
|
| +
|
| +// Match key code of composition keydown event on windows.
|
| +// IE sends VK_PROCESSKEY which has value 229;
|
| +const int CompositionEventKeyCode = 229;
|
| +
|
| +#if ENABLE(SVG)
|
| +using namespace SVGNames;
|
| +#endif
|
| +
|
| +// When the autoscroll or the panScroll is triggered when do the scroll every 0.05s to make it smooth
|
| +const double autoscrollInterval = 0.05;
|
| +
|
| +static Frame* subframeForTargetNode(Node*);
|
| +static Frame* subframeForHitTestResult(const MouseEventWithHitTestResults&);
|
| +
|
| +static inline void scrollAndAcceptEvent(float delta, ScrollDirection positiveDirection, ScrollDirection negativeDirection, PlatformWheelEvent& e, Node* node)
|
| +{
|
| + if (!delta)
|
| + return;
|
| +
|
| + // Find the nearest enclosing box.
|
| + RenderBox* enclosingBox = node->renderer()->enclosingBox();
|
| +
|
| + if (e.granularity() == ScrollByPageWheelEvent) {
|
| + if (enclosingBox->scroll(delta < 0 ? negativeDirection : positiveDirection, ScrollByPage, 1))
|
| + e.accept();
|
| + return;
|
| + }
|
| + float pixelsToScroll = delta > 0 ? delta : -delta;
|
| + if (e.granularity() == ScrollByLineWheelEvent)
|
| + pixelsToScroll *= cMouseWheelPixelsPerLineStep;
|
| + if (enclosingBox->scroll(delta < 0 ? negativeDirection : positiveDirection, ScrollByPixel, pixelsToScroll))
|
| + e.accept();
|
| +}
|
| +
|
| +EventHandler::EventHandler(Frame* frame)
|
| + : m_frame(frame)
|
| + , m_mousePressed(false)
|
| + , m_mouseDownMayStartSelect(false)
|
| + , m_mouseDownMayStartDrag(false)
|
| + , m_mouseDownWasSingleClickInSelection(false)
|
| + , m_beganSelectingText(false)
|
| + , m_panScrollInProgress(false)
|
| + , m_hoverTimer(this, &EventHandler::hoverTimerFired)
|
| + , m_autoscrollTimer(this, &EventHandler::autoscrollTimerFired)
|
| + , m_autoscrollRenderer(0)
|
| + , m_autoscrollInProgress(false)
|
| + , m_mouseDownMayStartAutoscroll(false)
|
| + , m_mouseDownWasInSubframe(false)
|
| +#if ENABLE(SVG)
|
| + , m_svgPan(false)
|
| +#endif
|
| + , m_resizeLayer(0)
|
| + , m_capturingMouseEventsNode(0)
|
| + , m_clickCount(0)
|
| + , m_mouseDownTimestamp(0)
|
| + , m_pendingFrameUnloadEventCount(0)
|
| + , m_pendingFrameBeforeUnloadEventCount(0)
|
| +#if PLATFORM(MAC)
|
| + , m_mouseDownView(nil)
|
| + , m_sendingEventToSubview(false)
|
| + , m_activationEventNumber(0)
|
| +#endif
|
| +{
|
| +}
|
| +
|
| +EventHandler::~EventHandler()
|
| +{
|
| +}
|
| +
|
| +EventHandler::EventHandlerDragState& EventHandler::dragState()
|
| +{
|
| + DEFINE_STATIC_LOCAL(EventHandlerDragState, state, ());
|
| + return state;
|
| +}
|
| +
|
| +void EventHandler::clear()
|
| +{
|
| + m_hoverTimer.stop();
|
| + m_resizeLayer = 0;
|
| + m_nodeUnderMouse = 0;
|
| + m_lastNodeUnderMouse = 0;
|
| +#if ENABLE(SVG)
|
| + m_instanceUnderMouse = 0;
|
| + m_lastInstanceUnderMouse = 0;
|
| +#endif
|
| + m_lastMouseMoveEventSubframe = 0;
|
| + m_lastScrollbarUnderMouse = 0;
|
| + m_clickCount = 0;
|
| + m_clickNode = 0;
|
| + m_frameSetBeingResized = 0;
|
| + m_dragTarget = 0;
|
| + m_currentMousePosition = IntPoint();
|
| + m_mousePressNode = 0;
|
| + m_mousePressed = false;
|
| + m_capturingMouseEventsNode = 0;
|
| +}
|
| +
|
| +void EventHandler::selectClosestWordFromMouseEvent(const MouseEventWithHitTestResults& result)
|
| +{
|
| + Node* innerNode = result.targetNode();
|
| + Selection newSelection;
|
| +
|
| + if (innerNode && innerNode->renderer() && m_mouseDownMayStartSelect) {
|
| + VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
|
| + if (pos.isNotNull()) {
|
| + newSelection = Selection(pos);
|
| + newSelection.expandUsingGranularity(WordGranularity);
|
| + }
|
| +
|
| + if (newSelection.isRange()) {
|
| + m_frame->setSelectionGranularity(WordGranularity);
|
| + m_beganSelectingText = true;
|
| + if (result.event().clickCount() == 2 && m_frame->editor()->isSelectTrailingWhitespaceEnabled())
|
| + newSelection.appendTrailingWhitespace();
|
| + }
|
| +
|
| + if (m_frame->shouldChangeSelection(newSelection))
|
| + m_frame->selection()->setSelection(newSelection);
|
| + }
|
| +}
|
| +
|
| +void EventHandler::selectClosestWordOrLinkFromMouseEvent(const MouseEventWithHitTestResults& result)
|
| +{
|
| + if (!result.hitTestResult().isLiveLink())
|
| + return selectClosestWordFromMouseEvent(result);
|
| +
|
| + Node* innerNode = result.targetNode();
|
| +
|
| + if (innerNode && innerNode->renderer() && m_mouseDownMayStartSelect) {
|
| + Selection newSelection;
|
| + Element* URLElement = result.hitTestResult().URLElement();
|
| + VisiblePosition pos(innerNode->renderer()->positionForPoint(result.localPoint()));
|
| + if (pos.isNotNull() && pos.deepEquivalent().node()->isDescendantOf(URLElement))
|
| + newSelection = Selection::selectionFromContentsOfNode(URLElement);
|
| +
|
| + if (newSelection.isRange()) {
|
| + m_frame->setSelectionGranularity(WordGranularity);
|
| + m_beganSelectingText = true;
|
| + }
|
| +
|
| + if (m_frame->shouldChangeSelection(newSelection))
|
| + m_frame->selection()->setSelection(newSelection);
|
| + }
|
| +}
|
| +
|
| +bool EventHandler::handleMousePressEventDoubleClick(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (event.event().button() != LeftButton)
|
| + return false;
|
| +
|
| + if (m_frame->selection()->isRange())
|
| + // A double-click when range is already selected
|
| + // should not change the selection. So, do not call
|
| + // selectClosestWordFromMouseEvent, but do set
|
| + // m_beganSelectingText to prevent handleMouseReleaseEvent
|
| + // from setting caret selection.
|
| + m_beganSelectingText = true;
|
| + else
|
| + selectClosestWordFromMouseEvent(event);
|
| +
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::handleMousePressEventTripleClick(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (event.event().button() != LeftButton)
|
| + return false;
|
| +
|
| + Node* innerNode = event.targetNode();
|
| + if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
|
| + return false;
|
| +
|
| + Selection newSelection;
|
| + VisiblePosition pos(innerNode->renderer()->positionForPoint(event.localPoint()));
|
| + if (pos.isNotNull()) {
|
| + newSelection = Selection(pos);
|
| + newSelection.expandUsingGranularity(ParagraphGranularity);
|
| + }
|
| + if (newSelection.isRange()) {
|
| + m_frame->setSelectionGranularity(ParagraphGranularity);
|
| + m_beganSelectingText = true;
|
| + }
|
| +
|
| + if (m_frame->shouldChangeSelection(newSelection))
|
| + m_frame->selection()->setSelection(newSelection);
|
| +
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::handleMousePressEventSingleClick(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (event.event().button() != LeftButton)
|
| + return false;
|
| +
|
| + Node* innerNode = event.targetNode();
|
| + if (!(innerNode && innerNode->renderer() && m_mouseDownMayStartSelect))
|
| + return false;
|
| +
|
| + // Extend the selection if the Shift key is down, unless the click is in a link.
|
| + bool extendSelection = event.event().shiftKey() && !event.isOverLink();
|
| +
|
| + // Don't restart the selection when the mouse is pressed on an
|
| + // existing selection so we can allow for text dragging.
|
| + IntPoint vPoint = m_frame->view()->windowToContents(event.event().pos());
|
| + if (!extendSelection && m_frame->selection()->contains(vPoint)) {
|
| + m_mouseDownWasSingleClickInSelection = true;
|
| + return false;
|
| + }
|
| +
|
| + VisiblePosition visiblePos(innerNode->renderer()->positionForPoint(event.localPoint()));
|
| + if (visiblePos.isNull())
|
| + visiblePos = VisiblePosition(innerNode, 0, DOWNSTREAM);
|
| + Position pos = visiblePos.deepEquivalent();
|
| +
|
| + Selection newSelection = m_frame->selection()->selection();
|
| + if (extendSelection && newSelection.isCaretOrRange()) {
|
| + m_frame->selection()->setLastChangeWasHorizontalExtension(false);
|
| +
|
| + // See <rdar://problem/3668157> REGRESSION (Mail): shift-click deselects when selection
|
| + // was created right-to-left
|
| + Position start = newSelection.start();
|
| + Position end = newSelection.end();
|
| + short before = Range::compareBoundaryPoints(pos.node(), pos.offset(), start.node(), start.offset());
|
| + if (before <= 0)
|
| + newSelection = Selection(pos, end);
|
| + else
|
| + newSelection = Selection(start, pos);
|
| +
|
| + if (m_frame->selectionGranularity() != CharacterGranularity)
|
| + newSelection.expandUsingGranularity(m_frame->selectionGranularity());
|
| + m_beganSelectingText = true;
|
| + } else {
|
| + newSelection = Selection(visiblePos);
|
| + m_frame->setSelectionGranularity(CharacterGranularity);
|
| + }
|
| +
|
| + if (m_frame->shouldChangeSelection(newSelection))
|
| + m_frame->selection()->setSelection(newSelection);
|
| +
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::handleMousePressEvent(const MouseEventWithHitTestResults& event)
|
| +{
|
| + // Reset drag state.
|
| + dragState().m_dragSrc = 0;
|
| +
|
| + bool singleClick = event.event().clickCount() <= 1;
|
| +
|
| + // If we got the event back, that must mean it wasn't prevented,
|
| + // so it's allowed to start a drag or selection.
|
| + m_mouseDownMayStartSelect = canMouseDownStartSelect(event.targetNode());
|
| +
|
| + // Careful that the drag starting logic stays in sync with eventMayStartDrag()
|
| + m_mouseDownMayStartDrag = singleClick;
|
| +
|
| + m_mouseDownWasSingleClickInSelection = false;
|
| +
|
| + if (event.isOverWidget() && passWidgetMouseDownEventToWidget(event))
|
| + return true;
|
| +
|
| +#if ENABLE(SVG)
|
| + if (m_frame->document()->isSVGDocument() &&
|
| + static_cast<SVGDocument*>(m_frame->document())->zoomAndPanEnabled()) {
|
| + if (event.event().shiftKey() && singleClick) {
|
| + m_svgPan = true;
|
| + static_cast<SVGDocument*>(m_frame->document())->startPan(event.event().pos());
|
| + return true;
|
| + }
|
| + }
|
| +#endif
|
| +
|
| + // We don't do this at the start of mouse down handling,
|
| + // because we don't want to do it until we know we didn't hit a widget.
|
| + if (singleClick)
|
| + focusDocumentView();
|
| +
|
| + Node* innerNode = event.targetNode();
|
| +
|
| + m_mousePressNode = innerNode;
|
| + m_dragStartPos = event.event().pos();
|
| +
|
| + bool swallowEvent = false;
|
| + if (event.event().button() == LeftButton || event.event().button() == MiddleButton) {
|
| + m_frame->selection()->setCaretBlinkingSuspended(true);
|
| + m_mousePressed = true;
|
| + m_beganSelectingText = false;
|
| +
|
| + if (event.event().clickCount() == 2)
|
| + swallowEvent = handleMousePressEventDoubleClick(event);
|
| + else if (event.event().clickCount() >= 3)
|
| + swallowEvent = handleMousePressEventTripleClick(event);
|
| + else
|
| + swallowEvent = handleMousePressEventSingleClick(event);
|
| + }
|
| +
|
| + m_mouseDownMayStartAutoscroll = m_mouseDownMayStartSelect ||
|
| + (m_mousePressNode && m_mousePressNode->renderBox() && m_mousePressNode->renderBox()->canBeProgramaticallyScrolled(true));
|
| +
|
| + return swallowEvent;
|
| +}
|
| +
|
| +bool EventHandler::handleMouseDraggedEvent(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (handleDrag(event))
|
| + return true;
|
| +
|
| + if (!m_mousePressed)
|
| + return false;
|
| +
|
| + Node* targetNode = event.targetNode();
|
| + if (event.event().button() != LeftButton || !targetNode || !targetNode->renderer())
|
| + return false;
|
| +
|
| +#if PLATFORM(MAC) // FIXME: Why does this assertion fire on other platforms?
|
| + ASSERT(m_mouseDownMayStartSelect || m_mouseDownMayStartAutoscroll);
|
| +#endif
|
| +
|
| + m_mouseDownMayStartDrag = false;
|
| +
|
| + if (m_mouseDownMayStartAutoscroll && !m_panScrollInProgress) {
|
| + // If the selection is contained in a layer that can scroll, that layer should handle the autoscroll
|
| + // Otherwise, let the bridge handle it so the view can scroll itself.
|
| + RenderObject* renderer = targetNode->renderer();
|
| + while (renderer && (!renderer->isBox() || !toRenderBox(renderer)->canBeProgramaticallyScrolled(false))) {
|
| + if (!renderer->parent() && renderer->node() == renderer->document() && renderer->document()->ownerElement())
|
| + renderer = renderer->document()->ownerElement()->renderer();
|
| + else
|
| + renderer = renderer->parent();
|
| + }
|
| +
|
| + if (renderer) {
|
| + m_autoscrollInProgress = true;
|
| + handleAutoscroll(renderer);
|
| + }
|
| +
|
| + m_mouseDownMayStartAutoscroll = false;
|
| + }
|
| +
|
| + updateSelectionForMouseDrag(targetNode, event.localPoint());
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::eventMayStartDrag(const PlatformMouseEvent& event) const
|
| +{
|
| + // This is a pre-flight check of whether the event might lead to a drag being started. Be careful
|
| + // that its logic needs to stay in sync with handleMouseMoveEvent() and the way we setMouseDownMayStartDrag
|
| + // in handleMousePressEvent
|
| +
|
| + if (!m_frame->contentRenderer() || !m_frame->contentRenderer()->hasLayer()
|
| + || event.button() != LeftButton || event.clickCount() != 1)
|
| + return false;
|
| +
|
| + bool DHTMLFlag;
|
| + bool UAFlag;
|
| + allowDHTMLDrag(DHTMLFlag, UAFlag);
|
| + if (!DHTMLFlag && !UAFlag)
|
| + return false;
|
| +
|
| + HitTestRequest request(HitTestRequest::ReadOnly);
|
| + HitTestResult result(m_frame->view()->windowToContents(event.pos()));
|
| + m_frame->contentRenderer()->layer()->hitTest(request, result);
|
| + bool srcIsDHTML;
|
| + return result.innerNode() && result.innerNode()->renderer()->draggableNode(DHTMLFlag, UAFlag, result.point().x(), result.point().y(), srcIsDHTML);
|
| +}
|
| +
|
| +void EventHandler::updateSelectionForMouseDrag()
|
| +{
|
| + FrameView* view = m_frame->view();
|
| + if (!view)
|
| + return;
|
| + RenderView* renderer = m_frame->contentRenderer();
|
| + if (!renderer)
|
| + return;
|
| + RenderLayer* layer = renderer->layer();
|
| + if (!layer)
|
| + return;
|
| +
|
| + HitTestRequest request(HitTestRequest::ReadOnly |
|
| + HitTestRequest::Active |
|
| + HitTestRequest::MouseMove);
|
| + HitTestResult result(view->windowToContents(m_currentMousePosition));
|
| + layer->hitTest(request, result);
|
| + updateSelectionForMouseDrag(result.innerNode(), result.localPoint());
|
| +}
|
| +
|
| +void EventHandler::updateSelectionForMouseDrag(Node* targetNode, const IntPoint& localPoint)
|
| +{
|
| + if (!m_mouseDownMayStartSelect)
|
| + return;
|
| +
|
| + if (!targetNode)
|
| + return;
|
| +
|
| + RenderObject* targetRenderer = targetNode->renderer();
|
| + if (!targetRenderer)
|
| + return;
|
| +
|
| + if (!canMouseDragExtendSelect(targetNode))
|
| + return;
|
| +
|
| + VisiblePosition targetPosition(targetRenderer->positionForPoint(localPoint));
|
| +
|
| + // Don't modify the selection if we're not on a node.
|
| + if (targetPosition.isNull())
|
| + return;
|
| +
|
| + // Restart the selection if this is the first mouse move. This work is usually
|
| + // done in handleMousePressEvent, but not if the mouse press was on an existing selection.
|
| + Selection newSelection = m_frame->selection()->selection();
|
| +
|
| +#if ENABLE(SVG)
|
| + // Special case to limit selection to the containing block for SVG text.
|
| + // FIXME: Isn't there a better non-SVG-specific way to do this?
|
| + if (Node* selectionBaseNode = newSelection.base().node())
|
| + if (RenderObject* selectionBaseRenderer = selectionBaseNode->renderer())
|
| + if (selectionBaseRenderer->isSVGText())
|
| + if (targetNode->renderer()->containingBlock() != selectionBaseRenderer->containingBlock())
|
| + return;
|
| +#endif
|
| +
|
| + if (!m_beganSelectingText) {
|
| + m_beganSelectingText = true;
|
| + newSelection = Selection(targetPosition);
|
| + }
|
| +
|
| + newSelection.setExtent(targetPosition);
|
| + if (m_frame->selectionGranularity() != CharacterGranularity)
|
| + newSelection.expandUsingGranularity(m_frame->selectionGranularity());
|
| +
|
| + if (m_frame->shouldChangeSelection(newSelection)) {
|
| + m_frame->selection()->setLastChangeWasHorizontalExtension(false);
|
| + m_frame->selection()->setSelection(newSelection);
|
| + }
|
| +}
|
| +
|
| +bool EventHandler::handleMouseUp(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (eventLoopHandleMouseUp(event))
|
| + return true;
|
| +
|
| + // If this was the first click in the window, we don't even want to clear the selection.
|
| + // This case occurs when the user clicks on a draggable element, since we have to process
|
| + // the mouse down and drag events to see if we might start a drag. For other first clicks
|
| + // in a window, we just don't acceptFirstMouse, and the whole down-drag-up sequence gets
|
| + // ignored upstream of this layer.
|
| + return eventActivatedView(event.event());
|
| +}
|
| +
|
| +bool EventHandler::handleMouseReleaseEvent(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (m_autoscrollInProgress)
|
| + stopAutoscrollTimer();
|
| +
|
| + if (handleMouseUp(event))
|
| + return true;
|
| +
|
| + // Used to prevent mouseMoveEvent from initiating a drag before
|
| + // the mouse is pressed again.
|
| + m_frame->selection()->setCaretBlinkingSuspended(false);
|
| + m_mousePressed = false;
|
| + m_mouseDownMayStartDrag = false;
|
| + m_mouseDownMayStartSelect = false;
|
| + m_mouseDownMayStartAutoscroll = false;
|
| + m_mouseDownWasInSubframe = false;
|
| +
|
| + bool handled = false;
|
| +
|
| + // Clear the selection if the mouse didn't move after the last mouse press.
|
| + // We do this so when clicking on the selection, the selection goes away.
|
| + // However, if we are editing, place the caret.
|
| + if (m_mouseDownWasSingleClickInSelection && !m_beganSelectingText
|
| + && m_dragStartPos == event.event().pos()
|
| + && m_frame->selection()->isRange()) {
|
| + Selection newSelection;
|
| + Node *node = event.targetNode();
|
| + if (node && node->isContentEditable() && node->renderer()) {
|
| + VisiblePosition pos = node->renderer()->positionForPoint(event.localPoint());
|
| + newSelection = Selection(pos);
|
| + }
|
| + if (m_frame->shouldChangeSelection(newSelection))
|
| + m_frame->selection()->setSelection(newSelection);
|
| +
|
| + handled = true;
|
| + }
|
| +
|
| + m_frame->notifyRendererOfSelectionChange(true);
|
| +
|
| + m_frame->selection()->selectFrameElementInParentIfFullySelected();
|
| +
|
| + return handled;
|
| +}
|
| +
|
| +void EventHandler::handleAutoscroll(RenderObject* renderer)
|
| +{
|
| + // We don't want to trigger the autoscroll or the panScroll if it's already active
|
| + if (m_autoscrollTimer.isActive())
|
| + return;
|
| +
|
| + setAutoscrollRenderer(renderer);
|
| +
|
| +#if ENABLE(PAN_SCROLLING)
|
| + if (m_panScrollInProgress) {
|
| + m_panScrollStartPos = currentMousePosition();
|
| + m_frame->view()->addPanScrollIcon(m_panScrollStartPos);
|
| + // If we're not in the top frame we notify it that we are using the panScroll
|
| + if (m_frame != m_frame->page()->mainFrame())
|
| + m_frame->page()->mainFrame()->eventHandler()->setPanScrollInProgress(true);
|
| + }
|
| +#endif
|
| +
|
| + startAutoscrollTimer();
|
| +}
|
| +
|
| +void EventHandler::autoscrollTimerFired(Timer<EventHandler>*)
|
| +{
|
| + RenderObject* r = autoscrollRenderer();
|
| + if (!r || !r->isBox()) {
|
| + stopAutoscrollTimer();
|
| + return;
|
| + }
|
| +
|
| + if (m_autoscrollInProgress) {
|
| + if (!m_mousePressed) {
|
| + stopAutoscrollTimer();
|
| + return;
|
| + }
|
| + toRenderBox(r)->autoscroll();
|
| + } else {
|
| + // we verify that the main frame hasn't received the order to stop the panScroll
|
| + if (!m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress()) {
|
| + stopAutoscrollTimer();
|
| + return;
|
| + }
|
| +#if ENABLE(PAN_SCROLLING)
|
| + setPanScrollCursor();
|
| + toRenderBox(r)->panScroll(m_panScrollStartPos);
|
| +#endif
|
| + }
|
| +}
|
| +
|
| +void EventHandler::setPanScrollCursor()
|
| +{
|
| + // At the original click location we draw a 4 arrowed icon. Over this icon there won't be any scroll
|
| + // So we don't want to change the cursor over this area
|
| + const int noScrollRadius = 9;
|
| + bool east = m_panScrollStartPos.x() < (m_currentMousePosition.x() - noScrollRadius);
|
| + bool west = m_panScrollStartPos.x() > (m_currentMousePosition.x() + noScrollRadius);
|
| + bool north = m_panScrollStartPos.y() > (m_currentMousePosition.y() + noScrollRadius);
|
| + bool south = m_panScrollStartPos.y() < (m_currentMousePosition.y() - noScrollRadius);
|
| +
|
| + if (north) {
|
| + if (east)
|
| + m_frame->view()->setCursor(northEastPanningCursor());
|
| + else if (west)
|
| + m_frame->view()->setCursor(northWestPanningCursor());
|
| + else
|
| + m_frame->view()->setCursor(northPanningCursor());
|
| + } else if (south) {
|
| + if (east)
|
| + m_frame->view()->setCursor(southEastPanningCursor());
|
| + else if (west)
|
| + m_frame->view()->setCursor(southWestPanningCursor());
|
| + else
|
| + m_frame->view()->setCursor(southPanningCursor());
|
| + } else if (east)
|
| + m_frame->view()->setCursor(eastPanningCursor());
|
| + else if (west)
|
| + m_frame->view()->setCursor(westPanningCursor());
|
| + else
|
| + m_frame->view()->setCursor(middlePanningCursor());
|
| +}
|
| +
|
| +RenderObject* EventHandler::autoscrollRenderer() const
|
| +{
|
| + return m_autoscrollRenderer;
|
| +}
|
| +
|
| +void EventHandler::updateAutoscrollRenderer()
|
| +{
|
| + if (!m_autoscrollRenderer)
|
| + return;
|
| +
|
| + HitTestResult hitTest = hitTestResultAtPoint(m_panScrollStartPos, true);
|
| +
|
| + if (Node* nodeAtPoint = hitTest.innerNode())
|
| + m_autoscrollRenderer = nodeAtPoint->renderer();
|
| +
|
| + while (m_autoscrollRenderer && (!m_autoscrollRenderer->isBox() || !toRenderBox(m_autoscrollRenderer)->canBeProgramaticallyScrolled(false)))
|
| + m_autoscrollRenderer = m_autoscrollRenderer->parent();
|
| +}
|
| +
|
| +void EventHandler::setAutoscrollRenderer(RenderObject* renderer)
|
| +{
|
| + m_autoscrollRenderer = renderer;
|
| +}
|
| +
|
| +void EventHandler::allowDHTMLDrag(bool& flagDHTML, bool& flagUA) const
|
| +{
|
| + if (!m_frame || !m_frame->document()) {
|
| + flagDHTML = false;
|
| + flagUA = false;
|
| + return;
|
| + }
|
| +
|
| + unsigned mask = m_frame->page()->dragController()->delegateDragSourceAction(m_frame->view()->contentsToWindow(m_mouseDownPos));
|
| + flagDHTML = (mask & DragSourceActionDHTML) != DragSourceActionNone;
|
| + flagUA = ((mask & DragSourceActionImage) || (mask & DragSourceActionLink) || (mask & DragSourceActionSelection));
|
| +}
|
| +
|
| +HitTestResult EventHandler::hitTestResultAtPoint(const IntPoint& point, bool allowShadowContent, bool ignoreClipping)
|
| +{
|
| + HitTestResult result(point);
|
| + if (!m_frame->contentRenderer())
|
| + return result;
|
| + int hitType = HitTestRequest::ReadOnly | HitTestRequest::Active;
|
| + if (ignoreClipping)
|
| + hitType |= HitTestRequest::IgnoreClipping;
|
| + m_frame->contentRenderer()->layer()->hitTest(HitTestRequest(hitType), result);
|
| +
|
| + while (true) {
|
| + Node* n = result.innerNode();
|
| + if (!result.isOverWidget() || !n || !n->renderer() || !n->renderer()->isWidget())
|
| + break;
|
| + RenderWidget* renderWidget = static_cast<RenderWidget*>(n->renderer());
|
| + Widget* widget = renderWidget->widget();
|
| + if (!widget || !widget->isFrameView())
|
| + break;
|
| + Frame* frame = static_cast<HTMLFrameElementBase*>(n)->contentFrame();
|
| + if (!frame || !frame->contentRenderer())
|
| + break;
|
| + FrameView* view = static_cast<FrameView*>(widget);
|
| + IntPoint widgetPoint(result.localPoint().x() + view->scrollX() - renderWidget->borderLeft() - renderWidget->paddingLeft(),
|
| + result.localPoint().y() + view->scrollY() - renderWidget->borderTop() - renderWidget->paddingTop());
|
| + HitTestResult widgetHitTestResult(widgetPoint);
|
| + frame->contentRenderer()->layer()->hitTest(HitTestRequest(hitType), widgetHitTestResult);
|
| + result = widgetHitTestResult;
|
| + }
|
| +
|
| + // If our HitTestResult is not visible, then we started hit testing too far down the frame chain.
|
| + // Another hit test at the main frame level should get us the correct visible result.
|
| + Frame* resultFrame = result.innerNonSharedNode() ? result.innerNonSharedNode()->document()->frame() : 0;
|
| + Frame* mainFrame = m_frame->page()->mainFrame();
|
| + if (m_frame != mainFrame && resultFrame && resultFrame != mainFrame && !resultFrame->editor()->insideVisibleArea(result.point())) {
|
| + IntPoint windowPoint = resultFrame->view()->contentsToWindow(result.point());
|
| + IntPoint mainFramePoint = mainFrame->view()->windowToContents(windowPoint);
|
| + result = mainFrame->eventHandler()->hitTestResultAtPoint(mainFramePoint, allowShadowContent, ignoreClipping);
|
| + }
|
| +
|
| + if (!allowShadowContent)
|
| + result.setToNonShadowAncestor();
|
| +
|
| + return result;
|
| +}
|
| +
|
| +
|
| +void EventHandler::startAutoscrollTimer()
|
| +{
|
| + m_autoscrollTimer.startRepeating(autoscrollInterval);
|
| +}
|
| +
|
| +void EventHandler::stopAutoscrollTimer(bool rendererIsBeingDestroyed)
|
| +{
|
| + if (m_autoscrollInProgress) {
|
| + if (m_mouseDownWasInSubframe) {
|
| + if (Frame* subframe = subframeForTargetNode(m_mousePressNode.get()))
|
| + subframe->eventHandler()->stopAutoscrollTimer(rendererIsBeingDestroyed);
|
| + return;
|
| + }
|
| + }
|
| +
|
| + if (autoscrollRenderer()) {
|
| + if (!rendererIsBeingDestroyed && (m_autoscrollInProgress || m_panScrollInProgress))
|
| + toRenderBox(autoscrollRenderer())->stopAutoscroll();
|
| +#if ENABLE(PAN_SCROLLING)
|
| + if (m_panScrollInProgress) {
|
| + m_frame->view()->removePanScrollIcon();
|
| + m_frame->view()->setCursor(pointerCursor());
|
| + }
|
| +#endif
|
| +
|
| + setAutoscrollRenderer(0);
|
| + }
|
| +
|
| + m_autoscrollTimer.stop();
|
| +
|
| + m_panScrollInProgress = false;
|
| + // If we're not in the top frame we notify it that we are not using the panScroll anymore
|
| + if (m_frame->page() && m_frame != m_frame->page()->mainFrame())
|
| + m_frame->page()->mainFrame()->eventHandler()->setPanScrollInProgress(false);
|
| + m_autoscrollInProgress = false;
|
| +}
|
| +
|
| +Node* EventHandler::mousePressNode() const
|
| +{
|
| + return m_mousePressNode.get();
|
| +}
|
| +
|
| +void EventHandler::setMousePressNode(PassRefPtr<Node> node)
|
| +{
|
| + m_mousePressNode = node;
|
| +}
|
| +
|
| +bool EventHandler::scrollOverflow(ScrollDirection direction, ScrollGranularity granularity)
|
| +{
|
| + if (!m_frame->document())
|
| + return false;
|
| +
|
| + Node* node = m_frame->document()->focusedNode();
|
| + if (!node)
|
| + node = m_mousePressNode.get();
|
| +
|
| + if (node) {
|
| + RenderObject* r = node->renderer();
|
| + if (r && !r->isListBox())
|
| + return r->enclosingBox()->scroll(direction, granularity);
|
| + }
|
| +
|
| + return false;
|
| +}
|
| +
|
| +IntPoint EventHandler::currentMousePosition() const
|
| +{
|
| + return m_currentMousePosition;
|
| +}
|
| +
|
| +Frame* subframeForHitTestResult(const MouseEventWithHitTestResults& hitTestResult)
|
| +{
|
| + if (!hitTestResult.isOverWidget())
|
| + return 0;
|
| + return subframeForTargetNode(hitTestResult.targetNode());
|
| +}
|
| +
|
| +Frame* subframeForTargetNode(Node* node)
|
| +{
|
| + if (!node)
|
| + return 0;
|
| +
|
| + RenderObject* renderer = node->renderer();
|
| + if (!renderer || !renderer->isWidget())
|
| + return 0;
|
| +
|
| + Widget* widget = static_cast<RenderWidget*>(renderer)->widget();
|
| + if (!widget || !widget->isFrameView())
|
| + return 0;
|
| +
|
| + return static_cast<FrameView*>(widget)->frame();
|
| +}
|
| +
|
| +static bool isSubmitImage(Node* node)
|
| +{
|
| + return node && node->hasTagName(inputTag)
|
| + && static_cast<HTMLInputElement*>(node)->inputType() == HTMLInputElement::IMAGE;
|
| +}
|
| +
|
| +// Returns true if the node's editable block is not current focused for editing
|
| +static bool nodeIsNotBeingEdited(Node* node, Frame* frame)
|
| +{
|
| + return frame->selection()->rootEditableElement() != node->rootEditableElement();
|
| +}
|
| +
|
| +Cursor EventHandler::selectCursor(const MouseEventWithHitTestResults& event, Scrollbar* scrollbar)
|
| +{
|
| + // During selection, use an I-beam no matter what we're over.
|
| + // If you're capturing mouse events for a particular node, don't treat this as a selection.
|
| + if (m_mousePressed && m_mouseDownMayStartSelect && m_frame->selection()->isCaretOrRange() && !m_capturingMouseEventsNode)
|
| + return iBeamCursor();
|
| +
|
| + Node* node = event.targetNode();
|
| + RenderObject* renderer = node ? node->renderer() : 0;
|
| + RenderStyle* style = renderer ? renderer->style() : 0;
|
| +
|
| + if (renderer && renderer->isFrameSet()) {
|
| + RenderFrameSet* fs = static_cast<RenderFrameSet*>(renderer);
|
| + if (fs->canResizeRow(event.localPoint()))
|
| + return rowResizeCursor();
|
| + if (fs->canResizeColumn(event.localPoint()))
|
| + return columnResizeCursor();
|
| + }
|
| +
|
| + if (style && style->cursors()) {
|
| + const CursorList* cursors = style->cursors();
|
| + for (unsigned i = 0; i < cursors->size(); ++i) {
|
| + CachedImage* cimage = (*cursors)[i].cursorImage.get();
|
| + IntPoint hotSpot = (*cursors)[i].hotSpot;
|
| + if (!cimage)
|
| + continue;
|
| + // Limit the size of cursors so that they cannot be used to cover UI elements in chrome.
|
| + IntSize size = cimage->image()->size();
|
| + if (size.width() > 128 || size.height() > 128)
|
| + continue;
|
| + // Do not let the hotspot be outside the bounds of the image.
|
| + if (hotSpot.x() < 0 || hotSpot.y() < 0 || hotSpot.x() > size.width() || hotSpot.y() > size.height())
|
| + continue;
|
| + if (cimage->image()->isNull())
|
| + break;
|
| + if (!cimage->errorOccurred())
|
| + return Cursor(cimage->image(), hotSpot);
|
| + }
|
| + }
|
| +
|
| + switch (style ? style->cursor() : CURSOR_AUTO) {
|
| + case CURSOR_AUTO: {
|
| + bool editable = (node && node->isContentEditable());
|
| + bool editableLinkEnabled = false;
|
| +
|
| + // If the link is editable, then we need to check the settings to see whether or not the link should be followed
|
| + if (editable) {
|
| + ASSERT(m_frame->settings());
|
| + switch(m_frame->settings()->editableLinkBehavior()) {
|
| + default:
|
| + case EditableLinkDefaultBehavior:
|
| + case EditableLinkAlwaysLive:
|
| + editableLinkEnabled = true;
|
| + break;
|
| +
|
| + case EditableLinkNeverLive:
|
| + editableLinkEnabled = false;
|
| + break;
|
| +
|
| + case EditableLinkLiveWhenNotFocused:
|
| + editableLinkEnabled = nodeIsNotBeingEdited(node, m_frame) || event.event().shiftKey();
|
| + break;
|
| +
|
| + case EditableLinkOnlyLiveWithShiftKey:
|
| + editableLinkEnabled = event.event().shiftKey();
|
| + break;
|
| + }
|
| + }
|
| +
|
| + if ((event.isOverLink() || isSubmitImage(node)) && (!editable || editableLinkEnabled))
|
| + return handCursor();
|
| + RenderLayer* layer = renderer ? renderer->enclosingLayer() : 0;
|
| + bool inResizer = false;
|
| + if (m_frame->view() && layer && layer->isPointInResizeControl(m_frame->view()->windowToContents(event.event().pos())))
|
| + inResizer = true;
|
| + if ((editable || (renderer && renderer->isText() && node->canStartSelection())) && !inResizer && !scrollbar)
|
| + return iBeamCursor();
|
| + return pointerCursor();
|
| + }
|
| + case CURSOR_CROSS:
|
| + return crossCursor();
|
| + case CURSOR_POINTER:
|
| + return handCursor();
|
| + case CURSOR_MOVE:
|
| + return moveCursor();
|
| + case CURSOR_ALL_SCROLL:
|
| + return moveCursor();
|
| + case CURSOR_E_RESIZE:
|
| + return eastResizeCursor();
|
| + case CURSOR_W_RESIZE:
|
| + return westResizeCursor();
|
| + case CURSOR_N_RESIZE:
|
| + return northResizeCursor();
|
| + case CURSOR_S_RESIZE:
|
| + return southResizeCursor();
|
| + case CURSOR_NE_RESIZE:
|
| + return northEastResizeCursor();
|
| + case CURSOR_SW_RESIZE:
|
| + return southWestResizeCursor();
|
| + case CURSOR_NW_RESIZE:
|
| + return northWestResizeCursor();
|
| + case CURSOR_SE_RESIZE:
|
| + return southEastResizeCursor();
|
| + case CURSOR_NS_RESIZE:
|
| + return northSouthResizeCursor();
|
| + case CURSOR_EW_RESIZE:
|
| + return eastWestResizeCursor();
|
| + case CURSOR_NESW_RESIZE:
|
| + return northEastSouthWestResizeCursor();
|
| + case CURSOR_NWSE_RESIZE:
|
| + return northWestSouthEastResizeCursor();
|
| + case CURSOR_COL_RESIZE:
|
| + return columnResizeCursor();
|
| + case CURSOR_ROW_RESIZE:
|
| + return rowResizeCursor();
|
| + case CURSOR_TEXT:
|
| + return iBeamCursor();
|
| + case CURSOR_WAIT:
|
| + return waitCursor();
|
| + case CURSOR_HELP:
|
| + return helpCursor();
|
| + case CURSOR_VERTICAL_TEXT:
|
| + return verticalTextCursor();
|
| + case CURSOR_CELL:
|
| + return cellCursor();
|
| + case CURSOR_CONTEXT_MENU:
|
| + return contextMenuCursor();
|
| + case CURSOR_PROGRESS:
|
| + return progressCursor();
|
| + case CURSOR_NO_DROP:
|
| + return noDropCursor();
|
| + case CURSOR_ALIAS:
|
| + return aliasCursor();
|
| + case CURSOR_COPY:
|
| + return copyCursor();
|
| + case CURSOR_NONE:
|
| + return noneCursor();
|
| + case CURSOR_NOT_ALLOWED:
|
| + return notAllowedCursor();
|
| + case CURSOR_DEFAULT:
|
| + return pointerCursor();
|
| + case CURSOR_WEBKIT_ZOOM_IN:
|
| + return zoomInCursor();
|
| + case CURSOR_WEBKIT_ZOOM_OUT:
|
| + return zoomOutCursor();
|
| + case CURSOR_WEBKIT_GRAB:
|
| + return grabCursor();
|
| + case CURSOR_WEBKIT_GRABBING:
|
| + return grabbingCursor();
|
| + }
|
| + return pointerCursor();
|
| +}
|
| +
|
| +bool EventHandler::handleMousePressEvent(const PlatformMouseEvent& mouseEvent)
|
| +{
|
| + if (!m_frame->document())
|
| + return false;
|
| +
|
| + RefPtr<FrameView> protector(m_frame->view());
|
| +
|
| + m_mousePressed = true;
|
| + m_currentMousePosition = mouseEvent.pos();
|
| + m_mouseDownTimestamp = mouseEvent.timestamp();
|
| + m_mouseDownMayStartDrag = false;
|
| + m_mouseDownMayStartSelect = false;
|
| + m_mouseDownMayStartAutoscroll = false;
|
| + m_mouseDownPos = m_frame->view()->windowToContents(mouseEvent.pos());
|
| + m_mouseDownWasInSubframe = false;
|
| +
|
| + HitTestRequest request(HitTestRequest::Active);
|
| + MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| +
|
| + if (!mev.targetNode()) {
|
| + invalidateClick();
|
| + return false;
|
| + }
|
| +
|
| + m_mousePressNode = mev.targetNode();
|
| +
|
| + InspectorController* inspector = m_frame->page()->inspectorController();
|
| + if (inspector && inspector->enabled() && inspector->searchingForNodeInPage()) {
|
| + inspector->handleMousePressOnNode(m_mousePressNode.get());
|
| + invalidateClick();
|
| + return true;
|
| + }
|
| +
|
| + Frame* subframe = subframeForHitTestResult(mev);
|
| + if (subframe && passMousePressEventToSubframe(mev, subframe)) {
|
| + // Start capturing future events for this frame. We only do this if we didn't clear
|
| + // the m_mousePressed flag, which may happen if an AppKit widget entered a modal event loop.
|
| + if (m_mousePressed)
|
| + m_capturingMouseEventsNode = mev.targetNode();
|
| + invalidateClick();
|
| + return true;
|
| + }
|
| +
|
| +#if ENABLE(PAN_SCROLLING)
|
| + if (m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() || m_autoscrollInProgress) {
|
| + stopAutoscrollTimer();
|
| + invalidateClick();
|
| + return true;
|
| + }
|
| +
|
| + if (mouseEvent.button() == MiddleButton && !mev.isOverLink()) {
|
| + RenderObject* renderer = mev.targetNode()->renderer();
|
| +
|
| + while (renderer && (!renderer->isBox() || !toRenderBox(renderer)->canBeProgramaticallyScrolled(false))) {
|
| + if (!renderer->parent() && renderer->node() == renderer->document() && renderer->document()->ownerElement())
|
| + renderer = renderer->document()->ownerElement()->renderer();
|
| + else
|
| + renderer = renderer->parent();
|
| + }
|
| +
|
| + if (renderer) {
|
| + m_panScrollInProgress = true;
|
| + handleAutoscroll(renderer);
|
| + invalidateClick();
|
| + return true;
|
| + }
|
| + }
|
| +#endif
|
| +
|
| + m_clickCount = mouseEvent.clickCount();
|
| + m_clickNode = mev.targetNode();
|
| +
|
| + RenderLayer* layer = m_clickNode->renderer() ? m_clickNode->renderer()->enclosingLayer() : 0;
|
| + IntPoint p = m_frame->view()->windowToContents(mouseEvent.pos());
|
| + if (layer && layer->isPointInResizeControl(p)) {
|
| + layer->setInResizeMode(true);
|
| + m_resizeLayer = layer;
|
| + m_offsetFromResizeCorner = layer->offsetFromResizeCorner(p);
|
| + invalidateClick();
|
| + return true;
|
| + }
|
| +
|
| + bool swallowEvent = dispatchMouseEvent(eventNames().mousedownEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| +
|
| + // If the hit testing originally determined the event was in a scrollbar, refetch the MouseEventWithHitTestResults
|
| + // in case the scrollbar widget was destroyed when the mouse event was handled.
|
| + if (mev.scrollbar()) {
|
| + const bool wasLastScrollBar = mev.scrollbar() == m_lastScrollbarUnderMouse.get();
|
| + HitTestRequest request(HitTestRequest::ReadOnly |
|
| + HitTestRequest::Active);
|
| + mev = prepareMouseEvent(request, mouseEvent);
|
| +
|
| + if (wasLastScrollBar && mev.scrollbar() != m_lastScrollbarUnderMouse.get())
|
| + m_lastScrollbarUnderMouse = 0;
|
| + }
|
| +
|
| + if (swallowEvent) {
|
| + // scrollbars should get events anyway, even disabled controls might be scrollable
|
| + if (mev.scrollbar())
|
| + passMousePressEventToScrollbar(mev, mev.scrollbar());
|
| + } else {
|
| + // Refetch the event target node if it currently is the shadow node inside an <input> element.
|
| + // If a mouse event handler changes the input element type to one that has a widget associated,
|
| + // we'd like to EventHandler::handleMousePressEvent to pass the event to the widget and thus the
|
| + // event target node can't still be the shadow node.
|
| + if (mev.targetNode()->isShadowNode() && mev.targetNode()->shadowParentNode()->hasTagName(inputTag)) {
|
| + HitTestRequest request(HitTestRequest::ReadOnly |
|
| + HitTestRequest::Active);
|
| + mev = prepareMouseEvent(request, mouseEvent);
|
| + }
|
| +
|
| + Scrollbar* scrollbar = m_frame->view()->scrollbarUnderMouse(mouseEvent);
|
| + if (!scrollbar)
|
| + scrollbar = mev.scrollbar();
|
| + if (scrollbar && passMousePressEventToScrollbar(mev, scrollbar))
|
| + swallowEvent = true;
|
| + else
|
| + swallowEvent = handleMousePressEvent(mev);
|
| + }
|
| +
|
| + return swallowEvent;
|
| +}
|
| +
|
| +// This method only exists for platforms that don't know how to deliver
|
| +bool EventHandler::handleMouseDoubleClickEvent(const PlatformMouseEvent& mouseEvent)
|
| +{
|
| + if (!m_frame->document())
|
| + return false;
|
| +
|
| + RefPtr<FrameView> protector(m_frame->view());
|
| +
|
| + // We get this instead of a second mouse-up
|
| + m_mousePressed = false;
|
| + m_currentMousePosition = mouseEvent.pos();
|
| +
|
| + HitTestRequest request(HitTestRequest::Active);
|
| + MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| + Frame* subframe = subframeForHitTestResult(mev);
|
| + if (subframe && passMousePressEventToSubframe(mev, subframe)) {
|
| + m_capturingMouseEventsNode = 0;
|
| + return true;
|
| + }
|
| +
|
| + m_clickCount = mouseEvent.clickCount();
|
| + bool swallowMouseUpEvent = dispatchMouseEvent(eventNames().mouseupEvent, mev.targetNode(), true, m_clickCount, mouseEvent, false);
|
| +
|
| + bool swallowClickEvent = false;
|
| + // Don't ever dispatch click events for right clicks
|
| + if (mouseEvent.button() != RightButton && mev.targetNode() == m_clickNode)
|
| + swallowClickEvent = dispatchMouseEvent(eventNames().clickEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| +
|
| + if (m_lastScrollbarUnderMouse)
|
| + swallowMouseUpEvent = m_lastScrollbarUnderMouse->mouseUp();
|
| +
|
| + bool swallowMouseReleaseEvent = false;
|
| + if (!swallowMouseUpEvent)
|
| + swallowMouseReleaseEvent = handleMouseReleaseEvent(mev);
|
| +
|
| + invalidateClick();
|
| +
|
| + return swallowMouseUpEvent || swallowClickEvent || swallowMouseReleaseEvent;
|
| +}
|
| +
|
| +bool EventHandler::mouseMoved(const PlatformMouseEvent& event)
|
| +{
|
| + HitTestResult hoveredNode = HitTestResult(IntPoint());
|
| + bool result = handleMouseMoveEvent(event, &hoveredNode);
|
| +
|
| + Page* page = m_frame->page();
|
| + if (!page)
|
| + return result;
|
| +
|
| + hoveredNode.setToNonShadowAncestor();
|
| + page->chrome()->mouseDidMoveOverElement(hoveredNode, event.modifierFlags());
|
| + page->chrome()->setToolTip(hoveredNode);
|
| + return result;
|
| +}
|
| +
|
| +bool EventHandler::handleMouseMoveEvent(const PlatformMouseEvent& mouseEvent, HitTestResult* hoveredNode)
|
| +{
|
| + // in Radar 3703768 we saw frequent crashes apparently due to the
|
| + // part being null here, which seems impossible, so check for nil
|
| + // but also assert so that we can try to figure this out in debug
|
| + // builds, if it happens.
|
| + ASSERT(m_frame);
|
| + if (!m_frame || !m_frame->document())
|
| + return false;
|
| +
|
| + RefPtr<FrameView> protector(m_frame->view());
|
| + m_currentMousePosition = mouseEvent.pos();
|
| +
|
| + if (m_hoverTimer.isActive())
|
| + m_hoverTimer.stop();
|
| +
|
| +#if ENABLE(SVG)
|
| + if (m_svgPan) {
|
| + static_cast<SVGDocument*>(m_frame->document())->updatePan(m_currentMousePosition);
|
| + return true;
|
| + }
|
| +#endif
|
| +
|
| + if (m_frameSetBeingResized)
|
| + return dispatchMouseEvent(eventNames().mousemoveEvent, m_frameSetBeingResized.get(), false, 0, mouseEvent, false);
|
| +
|
| + // Send events right to a scrollbar if the mouse is pressed.
|
| + if (m_lastScrollbarUnderMouse && m_mousePressed)
|
| + return m_lastScrollbarUnderMouse->mouseMoved(m_lastScrollbarUnderMouse->transformEvent(mouseEvent));
|
| +
|
| + // Treat mouse move events while the mouse is pressed as "read-only" in prepareMouseEvent
|
| + // if we are allowed to select.
|
| + // This means that :hover and :active freeze in the state they were in when the mouse
|
| + // was pressed, rather than updating for nodes the mouse moves over as you hold the mouse down.
|
| + int hitType = HitTestRequest::MouseMove;
|
| + if (m_mousePressed && m_mouseDownMayStartSelect)
|
| + hitType |= HitTestRequest::ReadOnly;
|
| + if (m_mousePressed)
|
| + hitType |= HitTestRequest::Active;
|
| + HitTestRequest request(hitType);
|
| + MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| + if (hoveredNode)
|
| + *hoveredNode = mev.hitTestResult();
|
| +
|
| + Scrollbar* scrollbar = 0;
|
| +
|
| + if (m_resizeLayer && m_resizeLayer->inResizeMode())
|
| + m_resizeLayer->resize(mouseEvent, m_offsetFromResizeCorner);
|
| + else {
|
| + if (m_frame->view())
|
| + scrollbar = m_frame->view()->scrollbarUnderMouse(mouseEvent);
|
| +
|
| + if (!scrollbar)
|
| + scrollbar = mev.scrollbar();
|
| +
|
| + if (m_lastScrollbarUnderMouse != scrollbar) {
|
| + // Send mouse exited to the old scrollbar.
|
| + if (m_lastScrollbarUnderMouse)
|
| + m_lastScrollbarUnderMouse->mouseExited();
|
| + m_lastScrollbarUnderMouse = m_mousePressed ? 0 : scrollbar;
|
| + }
|
| + }
|
| +
|
| + bool swallowEvent = false;
|
| + RefPtr<Frame> newSubframe = m_capturingMouseEventsNode.get() ? subframeForTargetNode(m_capturingMouseEventsNode.get()) : subframeForHitTestResult(mev);
|
| +
|
| + // We want mouseouts to happen first, from the inside out. First send a move event to the last subframe so that it will fire mouseouts.
|
| + if (m_lastMouseMoveEventSubframe && m_lastMouseMoveEventSubframe->tree()->isDescendantOf(m_frame) && m_lastMouseMoveEventSubframe != newSubframe)
|
| + passMouseMoveEventToSubframe(mev, m_lastMouseMoveEventSubframe.get());
|
| +
|
| + if (newSubframe) {
|
| + // Update over/out state before passing the event to the subframe.
|
| + updateMouseEventTargetNode(mev.targetNode(), mouseEvent, true);
|
| +
|
| + // Event dispatch in updateMouseEventTargetNode may have caused the subframe of the target
|
| + // node to be detached from its FrameView, in which case the event should not be passed.
|
| + if (newSubframe->view())
|
| + swallowEvent |= passMouseMoveEventToSubframe(mev, newSubframe.get(), hoveredNode);
|
| + } else {
|
| + if (scrollbar && !m_mousePressed)
|
| + scrollbar->mouseMoved(scrollbar->transformEvent(mouseEvent)); // Handle hover effects on platforms that support visual feedback on scrollbar hovering.
|
| + if ((!m_resizeLayer || !m_resizeLayer->inResizeMode()) && !m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() && m_frame->view())
|
| + m_frame->view()->setCursor(selectCursor(mev, scrollbar));
|
| + }
|
| +
|
| + m_lastMouseMoveEventSubframe = newSubframe;
|
| +
|
| + if (swallowEvent)
|
| + return true;
|
| +
|
| + swallowEvent = dispatchMouseEvent(eventNames().mousemoveEvent, mev.targetNode(), false, 0, mouseEvent, true);
|
| + if (!swallowEvent)
|
| + swallowEvent = handleMouseDraggedEvent(mev);
|
| +
|
| + return swallowEvent;
|
| +}
|
| +
|
| +void EventHandler::invalidateClick()
|
| +{
|
| + m_clickCount = 0;
|
| + m_clickNode = 0;
|
| +}
|
| +
|
| +bool EventHandler::handleMouseReleaseEvent(const PlatformMouseEvent& mouseEvent)
|
| +{
|
| + if (!m_frame->document())
|
| + return false;
|
| +
|
| + RefPtr<FrameView> protector(m_frame->view());
|
| +
|
| + m_mousePressed = false;
|
| + m_currentMousePosition = mouseEvent.pos();
|
| +
|
| +#if ENABLE(SVG)
|
| + if (m_svgPan) {
|
| + m_svgPan = false;
|
| + static_cast<SVGDocument*>(m_frame->document())->updatePan(m_currentMousePosition);
|
| + return true;
|
| + }
|
| +#endif
|
| +
|
| + if (m_frameSetBeingResized)
|
| + return dispatchMouseEvent(eventNames().mouseupEvent, m_frameSetBeingResized.get(), true, m_clickCount, mouseEvent, false);
|
| +
|
| + if (m_lastScrollbarUnderMouse) {
|
| + invalidateClick();
|
| + return m_lastScrollbarUnderMouse->mouseUp();
|
| + }
|
| +
|
| + HitTestRequest request(HitTestRequest::MouseUp);
|
| + MouseEventWithHitTestResults mev = prepareMouseEvent(request, mouseEvent);
|
| + Frame* subframe = m_capturingMouseEventsNode.get() ? subframeForTargetNode(m_capturingMouseEventsNode.get()) : subframeForHitTestResult(mev);
|
| + if (subframe && passMouseReleaseEventToSubframe(mev, subframe)) {
|
| + m_capturingMouseEventsNode = 0;
|
| + return true;
|
| + }
|
| +
|
| + bool swallowMouseUpEvent = dispatchMouseEvent(eventNames().mouseupEvent, mev.targetNode(), true, m_clickCount, mouseEvent, false);
|
| +
|
| + // Don't ever dispatch click events for right clicks
|
| + bool swallowClickEvent = false;
|
| + if (m_clickCount > 0 && mouseEvent.button() != RightButton && mev.targetNode() == m_clickNode)
|
| + swallowClickEvent = dispatchMouseEvent(eventNames().clickEvent, mev.targetNode(), true, m_clickCount, mouseEvent, true);
|
| +
|
| + if (m_resizeLayer) {
|
| + m_resizeLayer->setInResizeMode(false);
|
| + m_resizeLayer = 0;
|
| + }
|
| +
|
| + bool swallowMouseReleaseEvent = false;
|
| + if (!swallowMouseUpEvent)
|
| + swallowMouseReleaseEvent = handleMouseReleaseEvent(mev);
|
| +
|
| + invalidateClick();
|
| +
|
| + return swallowMouseUpEvent || swallowClickEvent || swallowMouseReleaseEvent;
|
| +}
|
| +
|
| +bool EventHandler::dispatchDragEvent(const AtomicString& eventType, Node* dragTarget, const PlatformMouseEvent& event, Clipboard* clipboard)
|
| +{
|
| + IntPoint contentsPos = m_frame->view()->windowToContents(event.pos());
|
| +
|
| + RefPtr<MouseEvent> me = MouseEvent::create(eventType,
|
| + true, true, m_frame->document()->defaultView(),
|
| + 0, event.globalX(), event.globalY(), contentsPos.x(), contentsPos.y(),
|
| + event.ctrlKey(), event.altKey(), event.shiftKey(), event.metaKey(),
|
| + 0, 0, clipboard);
|
| +
|
| + ExceptionCode ec = 0;
|
| + dragTarget->dispatchEvent(me.get(), ec);
|
| + return me->defaultPrevented();
|
| +}
|
| +
|
| +bool EventHandler::updateDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| +{
|
| + bool accept = false;
|
| +
|
| + if (!m_frame->document())
|
| + return false;
|
| +
|
| + if (!m_frame->view())
|
| + return false;
|
| +
|
| + HitTestRequest request(HitTestRequest::ReadOnly);
|
| + MouseEventWithHitTestResults mev = prepareMouseEvent(request, event);
|
| +
|
| + // Drag events should never go to text nodes (following IE, and proper mouseover/out dispatch)
|
| + Node* newTarget = mev.targetNode();
|
| + if (newTarget && newTarget->isTextNode())
|
| + newTarget = newTarget->parentNode();
|
| + if (newTarget)
|
| + newTarget = newTarget->shadowAncestorNode();
|
| +
|
| + if (m_dragTarget != newTarget) {
|
| + // FIXME: this ordering was explicitly chosen to match WinIE. However,
|
| + // it is sometimes incorrect when dragging within subframes, as seen with
|
| + // LayoutTests/fast/events/drag-in-frames.html.
|
| + if (newTarget)
|
| + if (newTarget->hasTagName(frameTag) || newTarget->hasTagName(iframeTag))
|
| + accept = static_cast<HTMLFrameElementBase*>(newTarget)->contentFrame()->eventHandler()->updateDragAndDrop(event, clipboard);
|
| + else
|
| + accept = dispatchDragEvent(eventNames().dragenterEvent, newTarget, event, clipboard);
|
| +
|
| + if (m_dragTarget) {
|
| + Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| + ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| + if (frame)
|
| + accept = frame->eventHandler()->updateDragAndDrop(event, clipboard);
|
| + else
|
| + dispatchDragEvent(eventNames().dragleaveEvent, m_dragTarget.get(), event, clipboard);
|
| + }
|
| + } else {
|
| + if (newTarget)
|
| + if (newTarget->hasTagName(frameTag) || newTarget->hasTagName(iframeTag))
|
| + accept = static_cast<HTMLFrameElementBase*>(newTarget)->contentFrame()->eventHandler()->updateDragAndDrop(event, clipboard);
|
| + else
|
| + accept = dispatchDragEvent(eventNames().dragoverEvent, newTarget, event, clipboard);
|
| + }
|
| + m_dragTarget = newTarget;
|
| +
|
| + return accept;
|
| +}
|
| +
|
| +void EventHandler::cancelDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| +{
|
| + if (m_dragTarget) {
|
| + Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| + ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| + if (frame)
|
| + frame->eventHandler()->cancelDragAndDrop(event, clipboard);
|
| + else
|
| + dispatchDragEvent(eventNames().dragleaveEvent, m_dragTarget.get(), event, clipboard);
|
| + }
|
| + clearDragState();
|
| +}
|
| +
|
| +bool EventHandler::performDragAndDrop(const PlatformMouseEvent& event, Clipboard* clipboard)
|
| +{
|
| + bool accept = false;
|
| + if (m_dragTarget) {
|
| + Frame* frame = (m_dragTarget->hasTagName(frameTag) || m_dragTarget->hasTagName(iframeTag))
|
| + ? static_cast<HTMLFrameElementBase*>(m_dragTarget.get())->contentFrame() : 0;
|
| + if (frame)
|
| + accept = frame->eventHandler()->performDragAndDrop(event, clipboard);
|
| + else
|
| + accept = dispatchDragEvent(eventNames().dropEvent, m_dragTarget.get(), event, clipboard);
|
| + }
|
| + clearDragState();
|
| + return accept;
|
| +}
|
| +
|
| +void EventHandler::clearDragState()
|
| +{
|
| + m_dragTarget = 0;
|
| + m_capturingMouseEventsNode = 0;
|
| +#if PLATFORM(MAC)
|
| + m_sendingEventToSubview = false;
|
| +#endif
|
| +}
|
| +
|
| +void EventHandler::setCapturingMouseEventsNode(PassRefPtr<Node> n)
|
| +{
|
| + m_capturingMouseEventsNode = n;
|
| +}
|
| +
|
| +MouseEventWithHitTestResults EventHandler::prepareMouseEvent(const HitTestRequest& request, const PlatformMouseEvent& mev)
|
| +{
|
| + ASSERT(m_frame);
|
| + ASSERT(m_frame->document());
|
| +
|
| + IntPoint documentPoint = m_frame->view()->windowToContents(mev.pos());
|
| + return m_frame->document()->prepareMouseEvent(request, documentPoint, mev);
|
| +}
|
| +
|
| +#if ENABLE(SVG)
|
| +static inline SVGElementInstance* instanceAssociatedWithShadowTreeElement(Node* referenceNode)
|
| +{
|
| + if (!referenceNode || !referenceNode->isSVGElement())
|
| + return 0;
|
| +
|
| + Node* shadowTreeElement = referenceNode->shadowTreeRootNode();
|
| + if (!shadowTreeElement)
|
| + return 0;
|
| +
|
| + Node* shadowTreeParentElement = shadowTreeElement->shadowParentNode();
|
| + if (!shadowTreeParentElement)
|
| + return 0;
|
| +
|
| + ASSERT(shadowTreeParentElement->hasTagName(useTag));
|
| + return static_cast<SVGUseElement*>(shadowTreeParentElement)->instanceForShadowTreeElement(referenceNode);
|
| +}
|
| +#endif
|
| +
|
| +void EventHandler::updateMouseEventTargetNode(Node* targetNode, const PlatformMouseEvent& mouseEvent, bool fireMouseOverOut)
|
| +{
|
| + Node* result = targetNode;
|
| +
|
| + // If we're capturing, we always go right to that node.
|
| + if (m_capturingMouseEventsNode)
|
| + result = m_capturingMouseEventsNode.get();
|
| + else {
|
| + // If the target node is a text node, dispatch on the parent node - rdar://4196646
|
| + if (result && result->isTextNode())
|
| + result = result->parentNode();
|
| + if (result)
|
| + result = result->shadowAncestorNode();
|
| + }
|
| + m_nodeUnderMouse = result;
|
| +#if ENABLE(SVG)
|
| + m_instanceUnderMouse = instanceAssociatedWithShadowTreeElement(result);
|
| +
|
| + // <use> shadow tree elements may have been recloned, update node under mouse in any case
|
| + if (m_lastInstanceUnderMouse) {
|
| + SVGElement* lastCorrespondingElement = m_lastInstanceUnderMouse->correspondingElement();
|
| + SVGElement* lastCorrespondingUseElement = m_lastInstanceUnderMouse->correspondingUseElement();
|
| +
|
| + if (lastCorrespondingElement && lastCorrespondingUseElement) {
|
| + HashSet<SVGElementInstance*> instances = lastCorrespondingElement->instancesForElement();
|
| +
|
| + // Locate the recloned shadow tree element for our corresponding instance
|
| + HashSet<SVGElementInstance*>::iterator end = instances.end();
|
| + for (HashSet<SVGElementInstance*>::iterator it = instances.begin(); it != end; ++it) {
|
| + SVGElementInstance* instance = (*it);
|
| + ASSERT(instance->correspondingElement() == lastCorrespondingElement);
|
| +
|
| + if (instance == m_lastInstanceUnderMouse)
|
| + continue;
|
| +
|
| + if (instance->correspondingUseElement() != lastCorrespondingUseElement)
|
| + continue;
|
| +
|
| + SVGElement* shadowTreeElement = instance->shadowTreeElement();
|
| + if (!shadowTreeElement->inDocument() || m_lastNodeUnderMouse == shadowTreeElement)
|
| + continue;
|
| +
|
| + m_lastNodeUnderMouse = shadowTreeElement;
|
| + m_lastInstanceUnderMouse = instance;
|
| + break;
|
| + }
|
| + }
|
| + }
|
| +#endif
|
| +
|
| + // Fire mouseout/mouseover if the mouse has shifted to a different node.
|
| + if (fireMouseOverOut) {
|
| + if (m_lastNodeUnderMouse && m_lastNodeUnderMouse->document() != m_frame->document()) {
|
| + m_lastNodeUnderMouse = 0;
|
| + m_lastScrollbarUnderMouse = 0;
|
| +#if ENABLE(SVG)
|
| + m_lastInstanceUnderMouse = 0;
|
| +#endif
|
| + }
|
| +
|
| + if (m_lastNodeUnderMouse != m_nodeUnderMouse) {
|
| + // send mouseout event to the old node
|
| + if (m_lastNodeUnderMouse)
|
| + m_lastNodeUnderMouse->dispatchMouseEvent(mouseEvent, eventNames().mouseoutEvent, 0, m_nodeUnderMouse.get());
|
| + // send mouseover event to the new node
|
| + if (m_nodeUnderMouse)
|
| + m_nodeUnderMouse->dispatchMouseEvent(mouseEvent, eventNames().mouseoverEvent, 0, m_lastNodeUnderMouse.get());
|
| + }
|
| + m_lastNodeUnderMouse = m_nodeUnderMouse;
|
| +#if ENABLE(SVG)
|
| + m_lastInstanceUnderMouse = instanceAssociatedWithShadowTreeElement(m_nodeUnderMouse.get());
|
| +#endif
|
| + }
|
| +}
|
| +
|
| +bool EventHandler::dispatchMouseEvent(const AtomicString& eventType, Node* targetNode, bool /*cancelable*/, int clickCount, const PlatformMouseEvent& mouseEvent, bool setUnder)
|
| +{
|
| + updateMouseEventTargetNode(targetNode, mouseEvent, setUnder);
|
| +
|
| + bool swallowEvent = false;
|
| +
|
| + if (m_nodeUnderMouse)
|
| + swallowEvent = m_nodeUnderMouse->dispatchMouseEvent(mouseEvent, eventType, clickCount);
|
| +
|
| + if (!swallowEvent && eventType == eventNames().mousedownEvent) {
|
| + // Blur current focus node when a link/button is clicked; this
|
| + // is expected by some sites that rely on onChange handlers running
|
| + // from form fields before the button click is processed.
|
| + Node* node = m_nodeUnderMouse.get();
|
| + RenderObject* renderer = node ? node->renderer() : 0;
|
| +
|
| + // Walk up the render tree to search for a node to focus.
|
| + // Walking up the DOM tree wouldn't work for shadow trees, like those behind the engine-based text fields.
|
| + while (renderer) {
|
| + node = renderer->element();
|
| + if (node && node->isFocusable()) {
|
| + // To fix <rdar://problem/4895428> Can't drag selected ToDo, we don't focus a
|
| + // node on mouse down if it's selected and inside a focused node. It will be
|
| + // focused if the user does a mouseup over it, however, because the mouseup
|
| + // will set a selection inside it, which will call setFocuseNodeIfNeeded.
|
| + ExceptionCode ec = 0;
|
| + Node* n = node->isShadowNode() ? node->shadowParentNode() : node;
|
| + if (m_frame->selection()->isRange() &&
|
| + m_frame->selection()->toRange()->compareNode(n, ec) == Range::NODE_INSIDE &&
|
| + n->isDescendantOf(m_frame->document()->focusedNode()))
|
| + return false;
|
| +
|
| + break;
|
| + }
|
| +
|
| + renderer = renderer->parent();
|
| + }
|
| + // If focus shift is blocked, we eat the event. Note we should never clear swallowEvent
|
| + // if the page already set it (e.g., by canceling default behavior).
|
| + if (node && node->isMouseFocusable()) {
|
| + if (!m_frame->page()->focusController()->setFocusedNode(node, m_frame))
|
| + swallowEvent = true;
|
| + } else if (!node || !node->focused()) {
|
| + if (!m_frame->page()->focusController()->setFocusedNode(0, m_frame))
|
| + swallowEvent = true;
|
| + }
|
| + }
|
| +
|
| + return swallowEvent;
|
| +}
|
| +
|
| +bool EventHandler::handleWheelEvent(PlatformWheelEvent& e)
|
| +{
|
| + Document* doc = m_frame->document();
|
| + if (!doc)
|
| + return false;
|
| +
|
| + RenderObject* docRenderer = doc->renderer();
|
| + if (!docRenderer)
|
| + return false;
|
| +
|
| + RefPtr<FrameView> protector(m_frame->view());
|
| +
|
| + IntPoint vPoint = m_frame->view()->windowToContents(e.pos());
|
| +
|
| + HitTestRequest request(HitTestRequest::ReadOnly);
|
| + HitTestResult result(vPoint);
|
| + doc->renderView()->layer()->hitTest(request, result);
|
| + Node* node = result.innerNode();
|
| +
|
| + if (node) {
|
| + // Figure out which view to send the event to.
|
| + RenderObject* target = node->renderer();
|
| +
|
| + if (result.isOverWidget() && target && target->isWidget()) {
|
| + Widget* widget = static_cast<RenderWidget*>(target)->widget();
|
| +
|
| + if (widget && passWheelEventToWidget(e, widget)) {
|
| + e.accept();
|
| + return true;
|
| + }
|
| + }
|
| +
|
| + node = node->shadowAncestorNode();
|
| + node->dispatchWheelEvent(e);
|
| + if (e.isAccepted())
|
| + return true;
|
| +
|
| + if (node->renderer()) {
|
| + // Just break up into two scrolls if we need to. Diagonal movement on
|
| + // a MacBook pro is an example of a 2-dimensional mouse wheel event (where both deltaX and deltaY can be set).
|
| + scrollAndAcceptEvent(e.deltaX(), ScrollLeft, ScrollRight, e, node);
|
| + scrollAndAcceptEvent(e.deltaY(), ScrollUp, ScrollDown, e, node);
|
| + }
|
| + }
|
| +
|
| + if (!e.isAccepted())
|
| + m_frame->view()->wheelEvent(e);
|
| +
|
| + return e.isAccepted();
|
| +}
|
| +
|
| +bool EventHandler::sendContextMenuEvent(const PlatformMouseEvent& event)
|
| +{
|
| + Document* doc = m_frame->document();
|
| + FrameView* v = m_frame->view();
|
| + if (!doc || !v)
|
| + return false;
|
| +
|
| + bool swallowEvent;
|
| + IntPoint viewportPos = v->windowToContents(event.pos());
|
| + HitTestRequest request(HitTestRequest::Active);
|
| + MouseEventWithHitTestResults mev = doc->prepareMouseEvent(request, viewportPos, event);
|
| +
|
| + // Context menu events shouldn't select text in GTK+ applications or in Chromium.
|
| + // FIXME: This should probably be configurable by embedders. Consider making it a WebPreferences setting.
|
| + // See: https://bugs.webkit.org/show_bug.cgi?id=15279
|
| +#if !PLATFORM(GTK) && !PLATFORM(CHROMIUM)
|
| + if (!m_frame->selection()->contains(viewportPos) &&
|
| + // FIXME: In the editable case, word selection sometimes selects content that isn't underneath the mouse.
|
| + // If the selection is non-editable, we do word selection to make it easier to use the contextual menu items
|
| + // available for text selections. But only if we're above text.
|
| + (m_frame->selection()->isContentEditable() || mev.targetNode() && mev.targetNode()->isTextNode())) {
|
| + m_mouseDownMayStartSelect = true; // context menu events are always allowed to perform a selection
|
| + selectClosestWordOrLinkFromMouseEvent(mev);
|
| + }
|
| +#endif
|
| +
|
| + swallowEvent = dispatchMouseEvent(eventNames().contextmenuEvent, mev.targetNode(), true, 0, event, true);
|
| +
|
| + return swallowEvent;
|
| +}
|
| +
|
| +void EventHandler::scheduleHoverStateUpdate()
|
| +{
|
| + if (!m_hoverTimer.isActive())
|
| + m_hoverTimer.startOneShot(0);
|
| +}
|
| +
|
| +// Whether or not a mouse down can begin the creation of a selection. Fires the selectStart event.
|
| +bool EventHandler::canMouseDownStartSelect(Node* node)
|
| +{
|
| + if (!node || !node->renderer())
|
| + return true;
|
| +
|
| + // Some controls and images can't start a select on a mouse down.
|
| + if (!node->canStartSelection())
|
| + return false;
|
| +
|
| + for (RenderObject* curr = node->renderer(); curr; curr = curr->parent()) {
|
| + if (Node* node = curr->element())
|
| + return node->dispatchEventForType(eventNames().selectstartEvent, true, true);
|
| + }
|
| +
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::canMouseDragExtendSelect(Node* node)
|
| +{
|
| + if (!node || !node->renderer())
|
| + return true;
|
| +
|
| + for (RenderObject* curr = node->renderer(); curr; curr = curr->parent()) {
|
| + if (Node* node = curr->element())
|
| + return node->dispatchEventForType(eventNames().selectstartEvent, true, true);
|
| + }
|
| +
|
| + return true;
|
| +}
|
| +
|
| +void EventHandler::setResizingFrameSet(HTMLFrameSetElement* frameSet)
|
| +{
|
| + m_frameSetBeingResized = frameSet;
|
| +}
|
| +
|
| +void EventHandler::resizeLayerDestroyed()
|
| +{
|
| + ASSERT(m_resizeLayer);
|
| + m_resizeLayer = 0;
|
| +}
|
| +
|
| +void EventHandler::hoverTimerFired(Timer<EventHandler>*)
|
| +{
|
| + m_hoverTimer.stop();
|
| +
|
| + ASSERT(m_frame);
|
| + ASSERT(m_frame->document());
|
| +
|
| + if (RenderView* renderer = m_frame->contentRenderer()) {
|
| + HitTestRequest request(HitTestRequest::MouseMove);
|
| + HitTestResult result(m_frame->view()->windowToContents(m_currentMousePosition));
|
| + renderer->layer()->hitTest(request, result);
|
| + m_frame->document()->updateRendering();
|
| + }
|
| +}
|
| +
|
| +static Node* eventTargetNodeForDocument(Document* doc)
|
| +{
|
| + if (!doc)
|
| + return 0;
|
| + Node* node = doc->focusedNode();
|
| + if (!node) {
|
| + if (doc->isHTMLDocument())
|
| + node = doc->body();
|
| + else
|
| + node = doc->documentElement();
|
| + if (!node)
|
| + return 0;
|
| + }
|
| + return node;
|
| +}
|
| +
|
| +bool EventHandler::handleAccessKey(const PlatformKeyboardEvent& evt)
|
| +{
|
| + // FIXME: Ignoring the state of Shift key is what neither IE nor Firefox do.
|
| + // IE matches lower and upper case access keys regardless of Shift key state - but if both upper and
|
| + // lower case variants are present in a document, the correct element is matched based on Shift key state.
|
| + // Firefox only matches an access key if Shift is not pressed, and does that case-insensitively.
|
| + ASSERT(!(accessKeyModifiers() & PlatformKeyboardEvent::ShiftKey));
|
| + if ((evt.modifiers() & ~PlatformKeyboardEvent::ShiftKey) != accessKeyModifiers())
|
| + return false;
|
| + String key = evt.unmodifiedText();
|
| + Element* elem = m_frame->document()->getElementByAccessKey(key.lower());
|
| + if (!elem)
|
| + return false;
|
| + elem->accessKeyAction(false);
|
| + return true;
|
| +}
|
| +
|
| +#if !PLATFORM(MAC)
|
| +bool EventHandler::needsKeyboardEventDisambiguationQuirks() const
|
| +{
|
| + return false;
|
| +}
|
| +#endif
|
| +
|
| +bool EventHandler::keyEvent(const PlatformKeyboardEvent& initialKeyEvent)
|
| +{
|
| +#if ENABLE(PAN_SCROLLING)
|
| + if (m_frame->page()->mainFrame()->eventHandler()->panScrollInProgress() || m_autoscrollInProgress) {
|
| + String escKeyId = "U+001B";
|
| + // If a key is pressed while the autoscroll/panScroll is in progress then we want to stop
|
| + if (initialKeyEvent.keyIdentifier() == escKeyId && initialKeyEvent.type() == PlatformKeyboardEvent::KeyUp)
|
| + stopAutoscrollTimer();
|
| +
|
| + // If we were in autoscroll/panscroll mode, we swallow the key event
|
| + return true;
|
| + }
|
| +#endif
|
| +
|
| + // Check for cases where we are too early for events -- possible unmatched key up
|
| + // from pressing return in the location bar.
|
| + RefPtr<Node> node = eventTargetNodeForDocument(m_frame->document());
|
| + if (!node)
|
| + return false;
|
| +
|
| + // FIXME: what is this doing here, in keyboard event handler?
|
| + m_frame->loader()->resetMultipleFormSubmissionProtection();
|
| +
|
| + // In IE, access keys are special, they are handled after default keydown processing, but cannot be canceled - this is hard to match.
|
| + // On Mac OS X, we process them before dispatching keydown, as the default keydown handler implements Emacs key bindings, which may conflict
|
| + // with access keys. Then we dispatch keydown, but suppress its default handling.
|
| + // On Windows, WebKit explicitly calls handleAccessKey() instead of dispatching a keypress event for WM_SYSCHAR messages.
|
| + // Other platforms currently match either Mac or Windows behavior, depending on whether they send combined KeyDown events.
|
| + bool matchedAnAccessKey = false;
|
| + if (initialKeyEvent.type() == PlatformKeyboardEvent::KeyDown)
|
| + matchedAnAccessKey = handleAccessKey(initialKeyEvent);
|
| +
|
| + // FIXME: it would be fair to let an input method handle KeyUp events before DOM dispatch.
|
| + if (initialKeyEvent.type() == PlatformKeyboardEvent::KeyUp || initialKeyEvent.type() == PlatformKeyboardEvent::Char)
|
| + return !node->dispatchKeyEvent(initialKeyEvent);
|
| +
|
| + bool backwardCompatibilityMode = needsKeyboardEventDisambiguationQuirks();
|
| +
|
| + ExceptionCode ec;
|
| + PlatformKeyboardEvent keyDownEvent = initialKeyEvent;
|
| + if (keyDownEvent.type() != PlatformKeyboardEvent::RawKeyDown)
|
| + keyDownEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::RawKeyDown, backwardCompatibilityMode);
|
| + RefPtr<KeyboardEvent> keydown = KeyboardEvent::create(keyDownEvent, m_frame->document()->defaultView());
|
| + if (matchedAnAccessKey)
|
| + keydown->setDefaultPrevented(true);
|
| + keydown->setTarget(node);
|
| +
|
| + if (initialKeyEvent.type() == PlatformKeyboardEvent::RawKeyDown) {
|
| + node->dispatchEvent(keydown, ec);
|
| + return keydown->defaultHandled() || keydown->defaultPrevented();
|
| + }
|
| +
|
| + // Run input method in advance of DOM event handling. This may result in the IM
|
| + // modifying the page prior the keydown event, but this behaviour is necessary
|
| + // in order to match IE:
|
| + // 1. preventing default handling of keydown and keypress events has no effect on IM input;
|
| + // 2. if an input method handles the event, its keyCode is set to 229 in keydown event.
|
| + m_frame->editor()->handleInputMethodKeydown(keydown.get());
|
| +
|
| + bool handledByInputMethod = keydown->defaultHandled();
|
| +
|
| + if (handledByInputMethod) {
|
| + keyDownEvent.setWindowsVirtualKeyCode(CompositionEventKeyCode);
|
| + keydown = KeyboardEvent::create(keyDownEvent, m_frame->document()->defaultView());
|
| + keydown->setTarget(node);
|
| + keydown->setDefaultHandled();
|
| + }
|
| +
|
| + node->dispatchEvent(keydown, ec);
|
| + bool keydownResult = keydown->defaultHandled() || keydown->defaultPrevented();
|
| + if (handledByInputMethod || (keydownResult && !backwardCompatibilityMode))
|
| + return keydownResult;
|
| +
|
| + // Focus may have changed during keydown handling, so refetch node.
|
| + // But if we are dispatching a fake backward compatibility keypress, then we pretend that the keypress happened on the original node.
|
| + if (!keydownResult) {
|
| + node = eventTargetNodeForDocument(m_frame->document());
|
| + if (!node)
|
| + return false;
|
| + }
|
| +
|
| + PlatformKeyboardEvent keyPressEvent = initialKeyEvent;
|
| + keyPressEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::Char, backwardCompatibilityMode);
|
| + if (keyPressEvent.text().isEmpty())
|
| + return keydownResult;
|
| + RefPtr<KeyboardEvent> keypress = KeyboardEvent::create(keyPressEvent, m_frame->document()->defaultView());
|
| + keypress->setTarget(node);
|
| + if (keydownResult)
|
| + keypress->setDefaultPrevented(true);
|
| +#if PLATFORM(MAC)
|
| + keypress->keypressCommands() = keydown->keypressCommands();
|
| +#endif
|
| + node->dispatchEvent(keypress, ec);
|
| +
|
| + return keydownResult || keypress->defaultPrevented() || keypress->defaultHandled();
|
| +}
|
| +
|
| +void EventHandler::handleKeyboardSelectionMovement(KeyboardEvent* event)
|
| +{
|
| + if (!event)
|
| + return;
|
| +
|
| + String key = event->keyIdentifier();
|
| + bool isShifted = event->getModifierState("Shift");
|
| + bool isOptioned = event->getModifierState("Alt");
|
| +
|
| + if (key == "Up") {
|
| + m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::BACKWARD, LineGranularity, true);
|
| + event->setDefaultHandled();
|
| + }
|
| + else if (key == "Down") {
|
| + m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::FORWARD, LineGranularity, true);
|
| + event->setDefaultHandled();
|
| + }
|
| + else if (key == "Left") {
|
| + m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::LEFT, (isOptioned) ? WordGranularity : CharacterGranularity, true);
|
| + event->setDefaultHandled();
|
| + }
|
| + else if (key == "Right") {
|
| + m_frame->selection()->modify((isShifted) ? SelectionController::EXTEND : SelectionController::MOVE, SelectionController::RIGHT, (isOptioned) ? WordGranularity : CharacterGranularity, true);
|
| + event->setDefaultHandled();
|
| + }
|
| +}
|
| +
|
| +void EventHandler::defaultKeyboardEventHandler(KeyboardEvent* event)
|
| +{
|
| + if (event->type() == eventNames().keydownEvent) {
|
| + m_frame->editor()->handleKeyboardEvent(event);
|
| + if (event->defaultHandled())
|
| + return;
|
| + if (event->keyIdentifier() == "U+0009")
|
| + defaultTabEventHandler(event);
|
| +
|
| + // provides KB navigation and selection for enhanced accessibility users
|
| + if (AXObjectCache::accessibilityEnhancedUserInterfaceEnabled())
|
| + handleKeyboardSelectionMovement(event);
|
| + }
|
| + if (event->type() == eventNames().keypressEvent) {
|
| + m_frame->editor()->handleKeyboardEvent(event);
|
| + if (event->defaultHandled())
|
| + return;
|
| + if (event->charCode() == ' ')
|
| + defaultSpaceEventHandler(event);
|
| + }
|
| +}
|
| +
|
| +bool EventHandler::dragHysteresisExceeded(const FloatPoint& floatDragViewportLocation) const
|
| +{
|
| + IntPoint dragViewportLocation((int)floatDragViewportLocation.x(), (int)floatDragViewportLocation.y());
|
| + return dragHysteresisExceeded(dragViewportLocation);
|
| +}
|
| +
|
| +bool EventHandler::dragHysteresisExceeded(const IntPoint& dragViewportLocation) const
|
| +{
|
| + IntPoint dragLocation = m_frame->view()->windowToContents(dragViewportLocation);
|
| + IntSize delta = dragLocation - m_mouseDownPos;
|
| +
|
| + int threshold = GeneralDragHysteresis;
|
| + if (dragState().m_dragSrcIsImage)
|
| + threshold = ImageDragHysteresis;
|
| + else if (dragState().m_dragSrcIsLink)
|
| + threshold = LinkDragHysteresis;
|
| + else if (dragState().m_dragSrcInSelection)
|
| + threshold = TextDragHysteresis;
|
| +
|
| + return abs(delta.width()) >= threshold || abs(delta.height()) >= threshold;
|
| +}
|
| +
|
| +void EventHandler::freeClipboard()
|
| +{
|
| + if (dragState().m_dragClipboard)
|
| + dragState().m_dragClipboard->setAccessPolicy(ClipboardNumb);
|
| +}
|
| +
|
| +bool EventHandler::shouldDragAutoNode(Node* node, const IntPoint& point) const
|
| +{
|
| + ASSERT(node);
|
| + if (node->hasChildNodes() || !m_frame->view())
|
| + return false;
|
| + return m_frame->page() && m_frame->page()->dragController()->mayStartDragAtEventLocation(m_frame, point);
|
| +}
|
| +
|
| +void EventHandler::dragSourceMovedTo(const PlatformMouseEvent& event)
|
| +{
|
| + if (dragState().m_dragSrc && dragState().m_dragSrcMayBeDHTML)
|
| + // for now we don't care if event handler cancels default behavior, since there is none
|
| + dispatchDragSrcEvent(eventNames().dragEvent, event);
|
| +}
|
| +
|
| +void EventHandler::dragSourceEndedAt(const PlatformMouseEvent& event, DragOperation operation)
|
| +{
|
| + if (dragState().m_dragSrc && dragState().m_dragSrcMayBeDHTML) {
|
| + dragState().m_dragClipboard->setDestinationOperation(operation);
|
| + // for now we don't care if event handler cancels default behavior, since there is none
|
| + dispatchDragSrcEvent(eventNames().dragendEvent, event);
|
| + }
|
| + freeClipboard();
|
| + dragState().m_dragSrc = 0;
|
| +}
|
| +
|
| +// returns if we should continue "default processing", i.e., whether eventhandler canceled
|
| +bool EventHandler::dispatchDragSrcEvent(const AtomicString& eventType, const PlatformMouseEvent& event)
|
| +{
|
| + return !dispatchDragEvent(eventType, dragState().m_dragSrc.get(), event, dragState().m_dragClipboard.get());
|
| +}
|
| +
|
| +bool EventHandler::handleDrag(const MouseEventWithHitTestResults& event)
|
| +{
|
| + if (event.event().button() != LeftButton || event.event().eventType() != MouseEventMoved) {
|
| + // If we allowed the other side of the bridge to handle a drag
|
| + // last time, then m_mousePressed might still be set. So we
|
| + // clear it now to make sure the next move after a drag
|
| + // doesn't look like a drag.
|
| + m_mousePressed = false;
|
| + return false;
|
| + }
|
| +
|
| + if (eventLoopHandleMouseDragged(event))
|
| + return true;
|
| +
|
| + // Careful that the drag starting logic stays in sync with eventMayStartDrag()
|
| +
|
| + if (m_mouseDownMayStartDrag && !dragState().m_dragSrc) {
|
| + allowDHTMLDrag(dragState().m_dragSrcMayBeDHTML, dragState().m_dragSrcMayBeUA);
|
| + if (!dragState().m_dragSrcMayBeDHTML && !dragState().m_dragSrcMayBeUA)
|
| + m_mouseDownMayStartDrag = false; // no element is draggable
|
| + }
|
| +
|
| + if (m_mouseDownMayStartDrag && !dragState().m_dragSrc) {
|
| + // try to find an element that wants to be dragged
|
| + HitTestRequest request(HitTestRequest::ReadOnly);
|
| + HitTestResult result(m_mouseDownPos);
|
| + m_frame->contentRenderer()->layer()->hitTest(request, result);
|
| + Node* node = result.innerNode();
|
| + if (node && node->renderer())
|
| + dragState().m_dragSrc = node->renderer()->draggableNode(dragState().m_dragSrcMayBeDHTML, dragState().m_dragSrcMayBeUA,
|
| + m_mouseDownPos.x(), m_mouseDownPos.y(), dragState().m_dragSrcIsDHTML);
|
| + else
|
| + dragState().m_dragSrc = 0;
|
| +
|
| + if (!dragState().m_dragSrc)
|
| + m_mouseDownMayStartDrag = false; // no element is draggable
|
| + else {
|
| + // remember some facts about this source, while we have a HitTestResult handy
|
| + node = result.URLElement();
|
| + dragState().m_dragSrcIsLink = node && node->isLink();
|
| +
|
| + node = result.innerNonSharedNode();
|
| + dragState().m_dragSrcIsImage = node && node->renderer() && node->renderer()->isImage();
|
| +
|
| + dragState().m_dragSrcInSelection = m_frame->selection()->contains(m_mouseDownPos);
|
| + }
|
| + }
|
| +
|
| + // For drags starting in the selection, the user must wait between the mousedown and mousedrag,
|
| + // or else we bail on the dragging stuff and allow selection to occur
|
| + if (m_mouseDownMayStartDrag && !dragState().m_dragSrcIsImage && dragState().m_dragSrcInSelection && event.event().timestamp() - m_mouseDownTimestamp < TextDragDelay) {
|
| + m_mouseDownMayStartDrag = false;
|
| + dragState().m_dragSrc = 0;
|
| + // ...but if this was the first click in the window, we don't even want to start selection
|
| + if (eventActivatedView(event.event()))
|
| + m_mouseDownMayStartSelect = false;
|
| + }
|
| +
|
| + if (!m_mouseDownMayStartDrag)
|
| + return !mouseDownMayStartSelect() && !m_mouseDownMayStartAutoscroll;
|
| +
|
| + // We are starting a text/image/url drag, so the cursor should be an arrow
|
| + m_frame->view()->setCursor(pointerCursor());
|
| +
|
| + if (!dragHysteresisExceeded(event.event().pos()))
|
| + return true;
|
| +
|
| + // Once we're past the hysteresis point, we don't want to treat this gesture as a click
|
| + invalidateClick();
|
| +
|
| + DragOperation srcOp = DragOperationNone;
|
| +
|
| + freeClipboard(); // would only happen if we missed a dragEnd. Do it anyway, just
|
| + // to make sure it gets numbified
|
| + dragState().m_dragClipboard = createDraggingClipboard();
|
| +
|
| + if (dragState().m_dragSrcMayBeDHTML) {
|
| + // Check to see if the is a DOM based drag, if it is get the DOM specified drag
|
| + // image and offset
|
| + if (dragState().m_dragSrcIsDHTML) {
|
| + if (RenderObject* renderer = dragState().m_dragSrc->renderer()) {
|
| + // FIXME: This doesn't work correctly with transforms.
|
| + FloatPoint absPos = renderer->localToAbsolute();
|
| + IntSize delta = m_mouseDownPos - roundedIntPoint(absPos);
|
| + dragState().m_dragClipboard->setDragImageElement(dragState().m_dragSrc.get(), IntPoint() + delta);
|
| + } else {
|
| + // The renderer has disappeared, this can happen if the onStartDrag handler has hidden
|
| + // the element in some way. In this case we just kill the drag.
|
| + m_mouseDownMayStartDrag = false;
|
| + goto cleanupDrag;
|
| + }
|
| + }
|
| +
|
| + m_mouseDownMayStartDrag = dispatchDragSrcEvent(eventNames().dragstartEvent, m_mouseDown)
|
| + && !m_frame->selection()->isInPasswordField();
|
| +
|
| + // Invalidate clipboard here against anymore pasteboard writing for security. The drag
|
| + // image can still be changed as we drag, but not the pasteboard data.
|
| + dragState().m_dragClipboard->setAccessPolicy(ClipboardImageWritable);
|
| +
|
| + if (m_mouseDownMayStartDrag) {
|
| + // gather values from DHTML element, if it set any
|
| + dragState().m_dragClipboard->sourceOperation(srcOp);
|
| +
|
| + // Yuck, dragSourceMovedTo() can be called as a result of kicking off the drag with
|
| + // dragImage! Because of that dumb reentrancy, we may think we've not started the
|
| + // drag when that happens. So we have to assume it's started before we kick it off.
|
| + dragState().m_dragClipboard->setDragHasStarted();
|
| + }
|
| + }
|
| +
|
| + if (m_mouseDownMayStartDrag) {
|
| + DragController* dragController = m_frame->page() ? m_frame->page()->dragController() : 0;
|
| + bool startedDrag = dragController && dragController->startDrag(m_frame, dragState().m_dragClipboard.get(), srcOp, event.event(), m_mouseDownPos, dragState().m_dragSrcIsDHTML);
|
| + if (!startedDrag && dragState().m_dragSrcMayBeDHTML) {
|
| + // Drag was canned at the last minute - we owe m_dragSrc a DRAGEND event
|
| + dispatchDragSrcEvent(eventNames().dragendEvent, event.event());
|
| + m_mouseDownMayStartDrag = false;
|
| + }
|
| + }
|
| +
|
| +cleanupDrag:
|
| + if (!m_mouseDownMayStartDrag) {
|
| + // something failed to start the drag, cleanup
|
| + freeClipboard();
|
| + dragState().m_dragSrc = 0;
|
| + }
|
| +
|
| + // No more default handling (like selection), whether we're past the hysteresis bounds or not
|
| + return true;
|
| +}
|
| +
|
| +bool EventHandler::handleTextInputEvent(const String& text, Event* underlyingEvent, bool isLineBreak, bool isBackTab)
|
| +{
|
| + // Platforms should differentiate real commands like selectAll from text input in disguise (like insertNewline),
|
| + // and avoid dispatching text input events from keydown default handlers.
|
| + ASSERT(!underlyingEvent || !underlyingEvent->isKeyboardEvent() || static_cast<KeyboardEvent*>(underlyingEvent)->type() == eventNames().keypressEvent);
|
| +
|
| + if (!m_frame)
|
| + return false;
|
| +
|
| + EventTarget* target;
|
| + if (underlyingEvent)
|
| + target = underlyingEvent->target();
|
| + else
|
| + target = eventTargetNodeForDocument(m_frame->document());
|
| + if (!target)
|
| + return false;
|
| +
|
| + RefPtr<TextEvent> event = TextEvent::create(m_frame->domWindow(), text);
|
| + event->setUnderlyingEvent(underlyingEvent);
|
| + event->setIsLineBreak(isLineBreak);
|
| + event->setIsBackTab(isBackTab);
|
| + ExceptionCode ec;
|
| + target->dispatchEvent(event, ec);
|
| + return event->defaultHandled();
|
| +}
|
| +
|
| +
|
| +#if !PLATFORM(MAC) && !PLATFORM(QT)
|
| +bool EventHandler::invertSenseOfTabsToLinks(KeyboardEvent*) const
|
| +{
|
| + return false;
|
| +}
|
| +#endif
|
| +
|
| +bool EventHandler::tabsToLinks(KeyboardEvent* event) const
|
| +{
|
| + Page* page = m_frame->page();
|
| + if (!page)
|
| + return false;
|
| +
|
| + if (page->chrome()->client()->tabsToLinks())
|
| + return !invertSenseOfTabsToLinks(event);
|
| +
|
| + return invertSenseOfTabsToLinks(event);
|
| +}
|
| +
|
| +void EventHandler::defaultTextInputEventHandler(TextEvent* event)
|
| +{
|
| + String data = event->data();
|
| + if (data == "\n") {
|
| + if (event->isLineBreak()) {
|
| + if (m_frame->editor()->insertLineBreak())
|
| + event->setDefaultHandled();
|
| + } else {
|
| + if (m_frame->editor()->insertParagraphSeparator())
|
| + event->setDefaultHandled();
|
| + }
|
| + } else {
|
| + if (m_frame->editor()->insertTextWithoutSendingTextEvent(data, false, event))
|
| + event->setDefaultHandled();
|
| + }
|
| +}
|
| +
|
| +#if PLATFORM(QT) || PLATFORM(MAC)
|
| +
|
| +// These two platforms handle the space event in the platform-specific WebKit code.
|
| +// Eventually it would be good to eliminate that and use the code here instead, but
|
| +// the Qt version is inside an ifdef and the Mac version has some extra behavior
|
| +// so we can't unify everything yet.
|
| +void EventHandler::defaultSpaceEventHandler(KeyboardEvent*)
|
| +{
|
| +}
|
| +
|
| +#else
|
| +
|
| +void EventHandler::defaultSpaceEventHandler(KeyboardEvent* event)
|
| +{
|
| + ScrollDirection direction = event->shiftKey() ? ScrollUp : ScrollDown;
|
| + if (scrollOverflow(direction, ScrollByPage)) {
|
| + event->setDefaultHandled();
|
| + return;
|
| + }
|
| +
|
| + FrameView* view = m_frame->view();
|
| + if (!view)
|
| + return;
|
| +
|
| + if (view->scroll(direction, ScrollByPage))
|
| + event->setDefaultHandled();
|
| +}
|
| +
|
| +#endif
|
| +
|
| +void EventHandler::defaultTabEventHandler(KeyboardEvent* event)
|
| +{
|
| + // We should only advance focus on tabs if no special modifier keys are held down.
|
| + if (event->ctrlKey() || event->metaKey() || event->altGraphKey())
|
| + return;
|
| +
|
| + Page* page = m_frame->page();
|
| + if (!page)
|
| + return;
|
| + if (!page->tabKeyCyclesThroughElements())
|
| + return;
|
| +
|
| + FocusDirection focusDirection = event->shiftKey() ? FocusDirectionBackward : FocusDirectionForward;
|
| +
|
| + // Tabs can be used in design mode editing.
|
| + if (m_frame->document()->inDesignMode())
|
| + return;
|
| +
|
| + if (page->focusController()->advanceFocus(focusDirection, event))
|
| + event->setDefaultHandled();
|
| +}
|
| +
|
| +void EventHandler::capsLockStateMayHaveChanged()
|
| +{
|
| + if (Document* d = m_frame->document())
|
| + if (Node* node = d->focusedNode())
|
| + if (RenderObject* r = node->renderer())
|
| + r->capsLockStateMayHaveChanged();
|
| +}
|
| +
|
| +unsigned EventHandler::pendingFrameUnloadEventCount()
|
| +{
|
| + return m_pendingFrameUnloadEventCount;
|
| +}
|
| +
|
| +void EventHandler::addPendingFrameUnloadEventCount()
|
| +{
|
| + m_pendingFrameUnloadEventCount += 1;
|
| + m_frame->page()->changePendingUnloadEventCount(1);
|
| + return;
|
| +}
|
| +
|
| +void EventHandler::removePendingFrameUnloadEventCount()
|
| +{
|
| + ASSERT( (-1 + (int)m_pendingFrameUnloadEventCount) >= 0 );
|
| + m_pendingFrameUnloadEventCount -= 1;
|
| + m_frame->page()->changePendingUnloadEventCount(-1);
|
| + return;
|
| +}
|
| +
|
| +void EventHandler::clearPendingFrameUnloadEventCount()
|
| +{
|
| + m_frame->page()->changePendingUnloadEventCount(-((int)m_pendingFrameUnloadEventCount));
|
| + m_pendingFrameUnloadEventCount = 0;
|
| + return;
|
| +}
|
| +
|
| +void EventHandler::sendResizeEvent()
|
| +{
|
| + if (Document* doc = m_frame->document())
|
| + doc->dispatchWindowEvent(eventNames().resizeEvent, false, false);
|
| +}
|
| +
|
| +void EventHandler::sendScrollEvent()
|
| +{
|
| + FrameView* v = m_frame->view();
|
| + if (!v)
|
| + return;
|
| + v->setWasScrolledByUser(true);
|
| + Document* doc = m_frame->document();
|
| + if (!doc)
|
| + return;
|
| + doc->dispatchEventForType(eventNames().scrollEvent, true, false);
|
| +}
|
| +
|
| +unsigned EventHandler::pendingFrameBeforeUnloadEventCount()
|
| +{
|
| + return m_pendingFrameBeforeUnloadEventCount;
|
| +}
|
| +
|
| +void EventHandler::addPendingFrameBeforeUnloadEventCount()
|
| +{
|
| + m_pendingFrameBeforeUnloadEventCount += 1;
|
| + m_frame->page()->changePendingBeforeUnloadEventCount(1);
|
| + return;
|
| +}
|
| +
|
| +void EventHandler::removePendingFrameBeforeUnloadEventCount()
|
| +{
|
| + ASSERT( (-1 + (int)m_pendingFrameBeforeUnloadEventCount) >= 0 );
|
| + m_pendingFrameBeforeUnloadEventCount -= 1;
|
| + m_frame->page()->changePendingBeforeUnloadEventCount(-1);
|
| + return;
|
| +}
|
| +
|
| + void EventHandler::clearPendingFrameBeforeUnloadEventCount()
|
| +{
|
| + m_frame->page()->changePendingBeforeUnloadEventCount(-((int)m_pendingFrameBeforeUnloadEventCount));
|
| + m_pendingFrameBeforeUnloadEventCount = 0;
|
| + return;
|
| +}
|
| +
|
| +bool EventHandler::passMousePressEventToScrollbar(MouseEventWithHitTestResults& mev, Scrollbar* scrollbar)
|
| +{
|
| + if (!scrollbar || !scrollbar->enabled())
|
| + return false;
|
| + return scrollbar->mouseDown(mev.event());
|
| +}
|
| +
|
| +}
|
|
|
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