| Index: webkit/pending/DragController.cpp
|
| ===================================================================
|
| --- webkit/pending/DragController.cpp (revision 2884)
|
| +++ webkit/pending/DragController.cpp (working copy)
|
| @@ -1,774 +0,0 @@
|
| -/*
|
| - * Copyright (C) 2007 Apple Inc. All rights reserved.
|
| - *
|
| - * 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 "DragController.h"
|
| -
|
| -#include "CSSStyleDeclaration.h"
|
| -#include "Clipboard.h"
|
| -#include "ClipboardAccessPolicy.h"
|
| -#include "DocLoader.h"
|
| -#include "Document.h"
|
| -#include "DocumentFragment.h"
|
| -#include "DragActions.h"
|
| -#include "DragClient.h"
|
| -#include "DragData.h"
|
| -#include "Editor.h"
|
| -#include "EditorClient.h"
|
| -#include "Element.h"
|
| -#include "EventHandler.h"
|
| -#include "FloatRect.h"
|
| -#include "Frame.h"
|
| -#include "FrameLoader.h"
|
| -#include "FrameView.h"
|
| -#include "HTMLAnchorElement.h"
|
| -#include "HTMLInputElement.h"
|
| -#include "HTMLNames.h"
|
| -#include "HitTestResult.h"
|
| -#include "Image.h"
|
| -#include "MoveSelectionCommand.h"
|
| -#include "Node.h"
|
| -#include "Page.h"
|
| -#include "RenderFileUploadControl.h"
|
| -#include "RenderImage.h"
|
| -#include "ReplaceSelectionCommand.h"
|
| -#include "ResourceRequest.h"
|
| -#include "SelectionController.h"
|
| -#include "Settings.h"
|
| -#include "SystemTime.h"
|
| -#include "Text.h"
|
| -#include "markup.h"
|
| -#include <wtf/RefPtr.h>
|
| -
|
| -namespace WebCore {
|
| -
|
| -static PlatformMouseEvent createMouseEvent(DragData* dragData)
|
| -{
|
| - // FIXME: We should fake modifier keys here.
|
| - return PlatformMouseEvent(dragData->clientPosition(), dragData->globalPosition(),
|
| - LeftButton, MouseEventMoved, 0, false, false, false, false, currentTime());
|
| -
|
| -}
|
| -
|
| -DragController::DragController(Page* page, DragClient* client)
|
| - : m_page(page)
|
| - , m_client(client)
|
| - , m_document(0)
|
| - , m_dragInitiator(0)
|
| - , m_dragDestinationAction(DragDestinationActionNone)
|
| - , m_dragSourceAction(DragSourceActionNone)
|
| - , m_didInitiateDrag(false)
|
| - , m_isHandlingDrag(false)
|
| - , m_dragOperation(DragOperationNone)
|
| -{
|
| -}
|
| -
|
| -DragController::~DragController()
|
| -{
|
| - m_client->dragControllerDestroyed();
|
| -}
|
| -
|
| -static PassRefPtr<DocumentFragment> documentFragmentFromDragData(DragData* dragData, RefPtr<Range> context,
|
| - bool allowPlainText, bool& chosePlainText)
|
| -{
|
| - ASSERT(dragData);
|
| - chosePlainText = false;
|
| -
|
| - Document* document = context->ownerDocument();
|
| - ASSERT(document);
|
| - if (document && dragData->containsCompatibleContent()) {
|
| - if (PassRefPtr<DocumentFragment> fragment = dragData->asFragment(document))
|
| - return fragment;
|
| -
|
| - if (dragData->containsURL()) {
|
| - String title;
|
| - String url = dragData->asURL(&title);
|
| - if (!url.isEmpty()) {
|
| - ExceptionCode ec;
|
| - RefPtr<HTMLAnchorElement> anchor = static_cast<HTMLAnchorElement*>(document->createElement("a", ec).get());
|
| - anchor->setHref(url);
|
| - RefPtr<Node> anchorText = document->createTextNode(title);
|
| - anchor->appendChild(anchorText, ec);
|
| - RefPtr<DocumentFragment> fragment = document->createDocumentFragment();
|
| - fragment->appendChild(anchor, ec);
|
| - return fragment.get();
|
| - }
|
| - }
|
| - }
|
| - if (allowPlainText && dragData->containsPlainText()) {
|
| - chosePlainText = true;
|
| - return createFragmentFromText(context.get(), dragData->asPlainText()).get();
|
| - }
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -bool DragController::dragIsMove(SelectionController* selection, DragData* dragData)
|
| -{
|
| - return m_document == m_dragInitiator
|
| - && selection->isContentEditable()
|
| - && !isCopyKeyDown();
|
| -}
|
| -
|
| -void DragController::cancelDrag()
|
| -{
|
| - m_page->dragCaretController()->clear();
|
| -}
|
| -
|
| -void DragController::dragEnded()
|
| -{
|
| - m_dragInitiator = 0;
|
| - m_didInitiateDrag = false;
|
| - m_page->dragCaretController()->clear();
|
| -}
|
| -
|
| -DragOperation DragController::dragEntered(DragData* dragData)
|
| -{
|
| - return dragEnteredOrUpdated(dragData);
|
| -}
|
| -
|
| -void DragController::dragExited(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| - Frame* mainFrame = m_page->mainFrame();
|
| -
|
| - if (RefPtr<FrameView> v = mainFrame->view()) {
|
| - ClipboardAccessPolicy policy = mainFrame->loader()->baseURL().isLocalFile() ? ClipboardReadable : ClipboardTypesReadable;
|
| - RefPtr<Clipboard> clipboard = dragData->createClipboard(policy);
|
| - clipboard->setSourceOperation(dragData->draggingSourceOperationMask());
|
| - mainFrame->eventHandler()->cancelDragAndDrop(createMouseEvent(dragData), clipboard.get());
|
| - clipboard->setAccessPolicy(ClipboardNumb); // invalidate clipboard here for security
|
| - }
|
| -
|
| - cancelDrag();
|
| - m_document = 0;
|
| -}
|
| -
|
| -DragOperation DragController::dragUpdated(DragData* dragData)
|
| -{
|
| - return dragEnteredOrUpdated(dragData);
|
| -}
|
| -
|
| -bool DragController::performDrag(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| - m_document = m_page->mainFrame()->documentAtPoint(dragData->clientPosition());
|
| - if (m_isHandlingDrag) {
|
| - ASSERT(m_dragDestinationAction & DragDestinationActionDHTML);
|
| - m_client->willPerformDragDestinationAction(DragDestinationActionDHTML, dragData);
|
| - RefPtr<Frame> mainFrame = m_page->mainFrame();
|
| - if (mainFrame->view()) {
|
| - // Sending an event can result in the destruction of the view and part.
|
| - RefPtr<Clipboard> clipboard = dragData->createClipboard(ClipboardReadable);
|
| - clipboard->setSourceOperation(dragData->draggingSourceOperationMask());
|
| - mainFrame->eventHandler()->performDragAndDrop(createMouseEvent(dragData), clipboard.get());
|
| - clipboard->setAccessPolicy(ClipboardNumb); // invalidate clipboard here for security
|
| - }
|
| - m_document = 0;
|
| - return true;
|
| - }
|
| -
|
| - if ((m_dragDestinationAction & DragDestinationActionEdit) && concludeDrag(dragData, m_dragDestinationAction)) {
|
| - m_document = 0;
|
| - return true;
|
| - }
|
| -
|
| - m_document = 0;
|
| -
|
| - if (operationForLoad(dragData) == DragOperationNone)
|
| - return false;
|
| -
|
| - m_client->willPerformDragDestinationAction(DragDestinationActionLoad, dragData);
|
| - m_page->mainFrame()->loader()->load(ResourceRequest(dragData->asURL()));
|
| - return true;
|
| -}
|
| -
|
| -DragOperation DragController::dragEnteredOrUpdated(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| - IntPoint windowPoint = dragData->clientPosition();
|
| -
|
| - Document* newDraggingDoc = 0;
|
| - if (Frame* frame = m_page->mainFrame())
|
| - newDraggingDoc = frame->documentAtPoint(windowPoint);
|
| - if (m_document != newDraggingDoc) {
|
| - if (m_document)
|
| - cancelDrag();
|
| - m_document = newDraggingDoc;
|
| - }
|
| -
|
| - m_dragDestinationAction = m_client->actionMaskForDrag(dragData);
|
| -
|
| - DragOperation operation = DragOperationNone;
|
| -
|
| - if (m_dragDestinationAction == DragDestinationActionNone)
|
| - cancelDrag();
|
| - else {
|
| - operation = tryDocumentDrag(dragData, m_dragDestinationAction);
|
| - if (operation == DragOperationNone && (m_dragDestinationAction & DragDestinationActionLoad))
|
| - return operationForLoad(dragData);
|
| - }
|
| -
|
| - return operation;
|
| -}
|
| -
|
| -static HTMLInputElement* asFileInput(Node* node)
|
| -{
|
| - ASSERT(node);
|
| -
|
| - // The button for a FILE input is a sub element with no set input type
|
| - // In order to get around this problem we assume any non-FILE input element
|
| - // is this internal button, and try querying the shadow parent node.
|
| - if (node->hasTagName(HTMLNames::inputTag) && node->isShadowNode() && static_cast<HTMLInputElement*>(node)->inputType() != HTMLInputElement::FILE)
|
| - node = node->shadowParentNode();
|
| -
|
| - if (!node || !node->hasTagName(HTMLNames::inputTag))
|
| - return 0;
|
| -
|
| - HTMLInputElement* inputElem = static_cast<HTMLInputElement*>(node);
|
| - if (inputElem->inputType() == HTMLInputElement::FILE)
|
| - return inputElem;
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -DragOperation DragController::tryDocumentDrag(DragData* dragData, DragDestinationAction actionMask)
|
| -{
|
| - ASSERT(dragData);
|
| -
|
| - if (!m_document)
|
| - return DragOperationNone;
|
| -
|
| - DragOperation operation = DragOperationNone;
|
| - if (actionMask & DragDestinationActionDHTML)
|
| - operation = tryDHTMLDrag(dragData);
|
| - m_isHandlingDrag = operation != DragOperationNone;
|
| -
|
| - RefPtr<FrameView> frameView = m_document->view();
|
| - if (!frameView)
|
| - return operation;
|
| -
|
| - if ((actionMask & DragDestinationActionEdit) && !m_isHandlingDrag && canProcessDrag(dragData)) {
|
| - if (dragData->containsColor())
|
| - return DragOperationGeneric;
|
| -
|
| - IntPoint dragPos = dragData->clientPosition();
|
| - IntPoint point = frameView->windowToContents(dragPos);
|
| - Element* element = m_document->elementFromPoint(point.x(), point.y());
|
| - ASSERT(element);
|
| - Frame* innerFrame = element->document()->frame();
|
| - ASSERT(innerFrame);
|
| - if (!asFileInput(element)) {
|
| - Selection dragCaret;
|
| - if (Frame* frame = m_document->frame())
|
| - dragCaret = frame->visiblePositionForPoint(point);
|
| - m_page->dragCaretController()->setSelection(dragCaret);
|
| - }
|
| -
|
| - return dragIsMove(innerFrame->selection(), dragData) ? DragOperationMove : DragOperationCopy;
|
| - }
|
| -
|
| - m_page->dragCaretController()->clear();
|
| - return operation;
|
| -}
|
| -
|
| -DragSourceAction DragController::delegateDragSourceAction(const IntPoint& windowPoint)
|
| -{
|
| - m_dragSourceAction = m_client->dragSourceActionMaskForPoint(windowPoint);
|
| - return m_dragSourceAction;
|
| -}
|
| -
|
| -DragOperation DragController::operationForLoad(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| - Document* doc = 0;
|
| - doc = m_page->mainFrame()->documentAtPoint(dragData->clientPosition());
|
| - if (doc && (m_didInitiateDrag || doc->isPluginDocument() || (doc->frame() && doc->frame()->editor()->clientIsEditable())))
|
| - return DragOperationNone;
|
| - return dragOperation(dragData);
|
| -}
|
| -
|
| -static bool setSelectionToDragCaret(Frame* frame, Selection& dragCaret, RefPtr<Range>& range, const IntPoint& point)
|
| -{
|
| - frame->selection()->setSelection(dragCaret);
|
| - if (frame->selection()->isNone()) {
|
| - dragCaret = frame->visiblePositionForPoint(point);
|
| - frame->selection()->setSelection(dragCaret);
|
| - range = dragCaret.toRange();
|
| - }
|
| - return !frame->selection()->isNone() && frame->selection()->isContentEditable();
|
| -}
|
| -
|
| -bool DragController::concludeDrag(DragData* dragData, DragDestinationAction actionMask)
|
| -{
|
| - ASSERT(dragData);
|
| - ASSERT(!m_isHandlingDrag);
|
| - ASSERT(actionMask & DragDestinationActionEdit);
|
| -
|
| - if (!m_document)
|
| - return false;
|
| -
|
| - IntPoint point = m_document->view()->windowToContents(dragData->clientPosition());
|
| - Element* element = m_document->elementFromPoint(point.x(), point.y());
|
| - ASSERT(element);
|
| - Frame* innerFrame = element->ownerDocument()->frame();
|
| - ASSERT(innerFrame);
|
| -
|
| - if (dragData->containsColor()) {
|
| - Color color = dragData->asColor();
|
| - if (!color.isValid())
|
| - return false;
|
| - if (!innerFrame)
|
| - return false;
|
| - RefPtr<Range> innerRange = innerFrame->selection()->toRange();
|
| - RefPtr<CSSStyleDeclaration> style = m_document->createCSSStyleDeclaration();
|
| - ExceptionCode ec;
|
| - style->setProperty("color", color.name(), ec);
|
| - if (!innerFrame->editor()->shouldApplyStyle(style.get(), innerRange.get()))
|
| - return false;
|
| - m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
|
| - innerFrame->editor()->applyStyle(style.get(), EditActionSetColor);
|
| - return true;
|
| - }
|
| -
|
| - if (!m_page->dragController()->canProcessDrag(dragData)) {
|
| - m_page->dragCaretController()->clear();
|
| - return false;
|
| - }
|
| -
|
| - if (HTMLInputElement* fileInput = asFileInput(element)) {
|
| -
|
| - if (!fileInput->isEnabled())
|
| - return false;
|
| -
|
| - if (!dragData->containsFiles())
|
| - return false;
|
| -
|
| - Vector<String> filenames;
|
| - dragData->asFilenames(filenames);
|
| - if (filenames.isEmpty())
|
| - return false;
|
| -
|
| - // Ugly. For security none of the API's available to us to set the input value
|
| - // on file inputs. Even forcing a change in HTMLInputElement doesn't work as
|
| - // RenderFileUploadControl clears the file when doing updateFromElement()
|
| - RenderFileUploadControl* renderer = static_cast<RenderFileUploadControl*>(fileInput->renderer());
|
| -
|
| - if (!renderer)
|
| - return false;
|
| -
|
| - // Only take the first filename as <input type="file" /> can only accept one
|
| - renderer->receiveDroppedFile(filenames[0]);
|
| - return true;
|
| - }
|
| -
|
| - Selection dragCaret(m_page->dragCaretController()->selection());
|
| - m_page->dragCaretController()->clear();
|
| - RefPtr<Range> range = dragCaret.toRange();
|
| -
|
| - // For range to be null a WebKit client must have done something bad while
|
| - // manually controlling drag behaviour
|
| - if (!range)
|
| - return false;
|
| - DocLoader* loader = range->ownerDocument()->docLoader();
|
| - loader->setAllowStaleResources(true);
|
| - if (dragIsMove(innerFrame->selection(), dragData) || dragCaret.isContentRichlyEditable()) {
|
| - bool chosePlainText = false;
|
| - RefPtr<DocumentFragment> fragment = documentFragmentFromDragData(dragData, range, true, chosePlainText);
|
| - if (!fragment || !innerFrame->editor()->shouldInsertFragment(fragment, range, EditorInsertActionDropped)) {
|
| - loader->setAllowStaleResources(false);
|
| - return false;
|
| - }
|
| -
|
| - m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
|
| - if (dragIsMove(innerFrame->selection(), dragData)) {
|
| - bool smartMove = innerFrame->selectionGranularity() == WordGranularity
|
| - && innerFrame->editor()->smartInsertDeleteEnabled()
|
| - && dragData->canSmartReplace();
|
| - applyCommand(MoveSelectionCommand::create(fragment, dragCaret.base(), smartMove));
|
| - } else {
|
| - if (setSelectionToDragCaret(innerFrame, dragCaret, range, point))
|
| - applyCommand(ReplaceSelectionCommand::create(m_document, fragment, true, dragData->canSmartReplace(), chosePlainText));
|
| - }
|
| - } else {
|
| - String text = dragData->asPlainText();
|
| - if (text.isEmpty() || !innerFrame->editor()->shouldInsertText(text, range.get(), EditorInsertActionDropped)) {
|
| - loader->setAllowStaleResources(false);
|
| - return false;
|
| - }
|
| -
|
| - m_client->willPerformDragDestinationAction(DragDestinationActionEdit, dragData);
|
| - if (setSelectionToDragCaret(innerFrame, dragCaret, range, point))
|
| - applyCommand(ReplaceSelectionCommand::create(m_document, createFragmentFromText(range.get(), text), true, false, true));
|
| - }
|
| - loader->setAllowStaleResources(false);
|
| -
|
| - return true;
|
| -}
|
| -
|
| -
|
| -bool DragController::canProcessDrag(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| -
|
| - if (!dragData->containsCompatibleContent())
|
| - return false;
|
| -
|
| - IntPoint point = m_page->mainFrame()->view()->windowToContents(dragData->clientPosition());
|
| - HitTestResult result = HitTestResult(point);
|
| - if (!m_page->mainFrame()->contentRenderer())
|
| - return false;
|
| -
|
| - result = m_page->mainFrame()->eventHandler()->hitTestResultAtPoint(point, true);
|
| -
|
| - if (!result.innerNonSharedNode())
|
| - return false;
|
| -
|
| - if (dragData->containsFiles() && asFileInput(result.innerNonSharedNode()))
|
| - return true;
|
| -
|
| - if (!result.innerNonSharedNode()->isContentEditable())
|
| - return false;
|
| -
|
| - if (m_didInitiateDrag && m_document == m_dragInitiator && result.isSelected())
|
| - return false;
|
| -
|
| - return true;
|
| -}
|
| -
|
| -DragOperation DragController::tryDHTMLDrag(DragData* dragData)
|
| -{
|
| - ASSERT(dragData);
|
| - ASSERT(m_document);
|
| - DragOperation op = DragOperationNone;
|
| - RefPtr<Frame> frame = m_page->mainFrame();
|
| - RefPtr<FrameView> viewProtector = frame->view();
|
| - if (!viewProtector)
|
| - return DragOperationNone;
|
| -
|
| - ClipboardAccessPolicy policy = frame->loader()->baseURL().isLocalFile() ? ClipboardReadable : ClipboardTypesReadable;
|
| - RefPtr<Clipboard> clipboard = dragData->createClipboard(policy);
|
| - DragOperation srcOp = dragData->draggingSourceOperationMask();
|
| - clipboard->setSourceOperation(srcOp);
|
| -
|
| - PlatformMouseEvent event = createMouseEvent(dragData);
|
| - if (frame->eventHandler()->updateDragAndDrop(event, clipboard.get())) {
|
| - // *op unchanged if no source op was set
|
| - if (!clipboard->destinationOperation(op)) {
|
| - // The element accepted but they didn't pick an operation, so we pick one for them
|
| - // (as does WinIE).
|
| - if (srcOp & DragOperationCopy)
|
| - op = DragOperationCopy;
|
| - else if (srcOp & DragOperationMove || srcOp & DragOperationGeneric)
|
| - op = DragOperationMove;
|
| - else if (srcOp & DragOperationLink)
|
| - op = DragOperationLink;
|
| - else
|
| - op = DragOperationGeneric;
|
| - } else if (!(op & srcOp)) {
|
| - op = DragOperationNone;
|
| - }
|
| -
|
| - clipboard->setAccessPolicy(ClipboardNumb); // invalidate clipboard here for security
|
| - return op;
|
| - }
|
| - return op;
|
| -}
|
| -
|
| -bool DragController::mayStartDragAtEventLocation(const Frame* frame, const IntPoint& framePos)
|
| -{
|
| - ASSERT(frame);
|
| - ASSERT(frame->settings());
|
| -
|
| - if (!frame->view() || !frame->contentRenderer())
|
| - return false;
|
| -
|
| - HitTestResult mouseDownTarget = HitTestResult(framePos);
|
| -
|
| - mouseDownTarget = frame->eventHandler()->hitTestResultAtPoint(framePos, true);
|
| -
|
| - if (mouseDownTarget.image()
|
| - && !mouseDownTarget.absoluteImageURL().isEmpty()
|
| - && frame->settings()->loadsImagesAutomatically()
|
| - && m_dragSourceAction & DragSourceActionImage)
|
| - return true;
|
| -
|
| - if (!mouseDownTarget.absoluteLinkURL().isEmpty()
|
| - && m_dragSourceAction & DragSourceActionLink
|
| - && mouseDownTarget.isLiveLink())
|
| - return true;
|
| -
|
| - if (mouseDownTarget.isSelected()
|
| - && m_dragSourceAction & DragSourceActionSelection)
|
| - return true;
|
| -
|
| - return false;
|
| -
|
| -}
|
| -
|
| -static CachedImage* getCachedImage(Element* element)
|
| -{
|
| - ASSERT(element);
|
| - RenderObject* renderer = element->renderer();
|
| - if (!renderer || !renderer->isImage())
|
| - return 0;
|
| - RenderImage* image = static_cast<RenderImage*>(renderer);
|
| - return image->cachedImage();
|
| -}
|
| -
|
| -static Image* getImage(Element* element)
|
| -{
|
| - ASSERT(element);
|
| - RenderObject* renderer = element->renderer();
|
| - if (!renderer || !renderer->isImage())
|
| - return 0;
|
| -
|
| - RenderImage* image = static_cast<RenderImage*>(renderer);
|
| - if (image->cachedImage() && !image->cachedImage()->errorOccurred())
|
| - return image->cachedImage()->image();
|
| - return 0;
|
| -}
|
| -
|
| -static void prepareClipboardForImageDrag(Frame* src, Clipboard* clipboard, Element* node, const KURL& linkURL, const KURL& imageURL, const String& label)
|
| -{
|
| - RefPtr<Range> range = src->document()->createRange();
|
| - ExceptionCode ec = 0;
|
| - range->selectNode(node, ec);
|
| - ASSERT(ec == 0);
|
| - src->selection()->setSelection(Selection(range.get(), DOWNSTREAM));
|
| - clipboard->declareAndWriteDragImage(node, !linkURL.isEmpty() ? linkURL : imageURL, label, src);
|
| -}
|
| -
|
| -static IntPoint dragLocForDHTMLDrag(const IntPoint& mouseDraggedPoint, const IntPoint& dragOrigin, const IntPoint& dragImageOffset, bool isLinkImage)
|
| -{
|
| - // dragImageOffset is the cursor position relative to the lower-left corner of the image.
|
| -#if PLATFORM(MAC)
|
| - // We add in the Y dimension because we are a flipped view, so adding moves the image down.
|
| - const int yOffset = dragImageOffset.y();
|
| -#else
|
| - const int yOffset = -dragImageOffset.y();
|
| -#endif
|
| -
|
| - if (isLinkImage)
|
| - return IntPoint(mouseDraggedPoint.x() - dragImageOffset.x(), mouseDraggedPoint.y() + yOffset);
|
| -
|
| - return IntPoint(dragOrigin.x() - dragImageOffset.x(), dragOrigin.y() + yOffset);
|
| -}
|
| -
|
| -static IntPoint dragLocForSelectionDrag(Frame* src)
|
| -{
|
| - IntRect draggingRect = enclosingIntRect(src->selectionRect());
|
| - int xpos = draggingRect.right();
|
| - xpos = draggingRect.x() < xpos ? draggingRect.x() : xpos;
|
| - int ypos = draggingRect.bottom();
|
| -#if PLATFORM(MAC)
|
| - // Deal with flipped coordinates on Mac
|
| - ypos = draggingRect.y() > ypos ? draggingRect.y() : ypos;
|
| -#else
|
| - ypos = draggingRect.y() < ypos ? draggingRect.y() : ypos;
|
| -#endif
|
| - return IntPoint(xpos, ypos);
|
| -}
|
| -
|
| -bool DragController::startDrag(Frame* src, Clipboard* clipboard, DragOperation srcOp, const PlatformMouseEvent& dragEvent, const IntPoint& dragOrigin, bool isDHTMLDrag)
|
| -{
|
| - ASSERT(src);
|
| - ASSERT(clipboard);
|
| -
|
| - if (!src->view() || !src->contentRenderer())
|
| - return false;
|
| -
|
| - HitTestResult dragSource = HitTestResult(dragOrigin);
|
| - dragSource = src->eventHandler()->hitTestResultAtPoint(dragOrigin, true);
|
| - KURL linkURL = dragSource.absoluteLinkURL();
|
| - KURL imageURL = dragSource.absoluteImageURL();
|
| - bool isSelected = dragSource.isSelected();
|
| -
|
| - IntPoint mouseDraggedPoint = src->view()->windowToContents(dragEvent.pos());
|
| -
|
| - m_draggingImageURL = KURL();
|
| - m_dragOperation = srcOp;
|
| -
|
| - DragImageRef dragImage = 0;
|
| - IntPoint dragLoc(0, 0);
|
| - IntPoint dragImageOffset(0, 0);
|
| -
|
| - if (isDHTMLDrag)
|
| - dragImage = clipboard->createDragImage(dragImageOffset);
|
| -
|
| - // We allow DHTML/JS to set the drag image, even if its a link, image or text we're dragging.
|
| - // This is in the spirit of the IE API, which allows overriding of pasteboard data and DragOp.
|
| - if (dragImage) {
|
| - dragLoc = dragLocForDHTMLDrag(mouseDraggedPoint, dragOrigin, dragImageOffset, !linkURL.isEmpty());
|
| - m_dragOffset = dragImageOffset;
|
| - }
|
| -
|
| - bool startedDrag = true; // optimism - we almost always manage to start the drag
|
| -
|
| - Node* node = dragSource.innerNonSharedNode();
|
| -
|
| - if (!imageURL.isEmpty() && node && node->isElementNode()
|
| - && getImage(static_cast<Element*>(node))
|
| - && (m_dragSourceAction & DragSourceActionImage)) {
|
| - Element* element = static_cast<Element*>(node);
|
| - if (!clipboard->hasData()) {
|
| - m_draggingImageURL = imageURL;
|
| - prepareClipboardForImageDrag(src, clipboard, element, linkURL, imageURL, dragSource.altDisplayString());
|
| - }
|
| -
|
| - m_client->willPerformDragSourceAction(DragSourceActionImage, dragOrigin, clipboard);
|
| -
|
| - if (!dragImage) {
|
| - IntRect imageRect = dragSource.imageRect();
|
| - imageRect.setLocation(m_page->mainFrame()->view()->windowToContents(src->view()->contentsToWindow(imageRect.location())));
|
| - doImageDrag(element, dragOrigin, dragSource.imageRect(), clipboard, src, m_dragOffset);
|
| - } else
|
| - // DHTML defined drag image
|
| - doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);
|
| -
|
| - } else if (!linkURL.isEmpty() && (m_dragSourceAction & DragSourceActionLink)) {
|
| - if (!clipboard->hasData())
|
| - // Simplify whitespace so the title put on the clipboard resembles what the user sees
|
| - // on the web page. This includes replacing newlines with spaces.
|
| - clipboard->writeURL(linkURL, dragSource.textContent().simplifyWhiteSpace(), src);
|
| -
|
| - m_client->willPerformDragSourceAction(DragSourceActionLink, dragOrigin, clipboard);
|
| - if (!dragImage) {
|
| - dragImage = m_client->createDragImageForLink(linkURL, dragSource.textContent(), src);
|
| - IntSize size = dragImageSize(dragImage);
|
| - m_dragOffset = IntPoint(-size.width() / 2, -LinkDragBorderInset);
|
| - dragLoc = IntPoint(mouseDraggedPoint.x() + m_dragOffset.x(), mouseDraggedPoint.y() + m_dragOffset.y());
|
| - }
|
| - doSystemDrag(dragImage, dragLoc, mouseDraggedPoint, clipboard, src, true);
|
| - } else if (isSelected && (m_dragSourceAction & DragSourceActionSelection)) {
|
| - RefPtr<Range> selectionRange = src->selection()->toRange();
|
| - ASSERT(selectionRange);
|
| - if (!clipboard->hasData())
|
| - clipboard->writeRange(selectionRange.get(), src);
|
| - m_client->willPerformDragSourceAction(DragSourceActionSelection, dragOrigin, clipboard);
|
| - if (!dragImage) {
|
| - dragImage = createDragImageForSelection(src);
|
| - dragLoc = dragLocForSelectionDrag(src);
|
| - m_dragOffset = IntPoint((int)(dragOrigin.x() - dragLoc.x()), (int)(dragOrigin.y() - dragLoc.y()));
|
| - }
|
| - doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);
|
| - } else if (isDHTMLDrag) {
|
| - ASSERT(m_dragSourceAction & DragSourceActionDHTML);
|
| - m_client->willPerformDragSourceAction(DragSourceActionDHTML, dragOrigin, clipboard);
|
| - doSystemDrag(dragImage, dragLoc, dragOrigin, clipboard, src, false);
|
| - } else {
|
| - // Only way I know to get here is if to get here is if the original element clicked on in the mousedown is no longer
|
| - // under the mousedown point, so linkURL, imageURL and isSelected are all false/empty.
|
| - startedDrag = false;
|
| - }
|
| -
|
| - if (dragImage)
|
| - deleteDragImage(dragImage);
|
| - return startedDrag;
|
| -}
|
| -
|
| -void DragController::doImageDrag(Element* element, const IntPoint& dragOrigin, const IntRect& rect, Clipboard* clipboard, Frame* frame, IntPoint& dragImageOffset)
|
| -{
|
| - IntPoint mouseDownPoint = dragOrigin;
|
| - DragImageRef dragImage;
|
| - IntPoint origin;
|
| -
|
| - Image* image = getImage(element);
|
| - if (image && image->size().height() * image->size().width() <= MaxOriginalImageArea
|
| - && (dragImage = createDragImageFromImage(image))) {
|
| - IntSize originalSize = rect.size();
|
| - origin = rect.location();
|
| -
|
| - dragImage = fitDragImageToMaxSize(dragImage, rect.size(), maxDragImageSize());
|
| - dragImage = dissolveDragImageToFraction(dragImage, DragImageAlpha);
|
| - IntSize newSize = dragImageSize(dragImage);
|
| -
|
| - // Properly orient the drag image and orient it differently if it's smaller than the original
|
| - float scale = newSize.width() / (float)originalSize.width();
|
| - float dx = origin.x() - mouseDownPoint.x();
|
| - dx *= scale;
|
| - origin.setX((int)(dx + 0.5));
|
| -#if PLATFORM(MAC)
|
| - //Compensate for accursed flipped coordinates in cocoa
|
| - origin.setY(origin.y() + originalSize.height());
|
| -#endif
|
| - float dy = origin.y() - mouseDownPoint.y();
|
| - dy *= scale;
|
| - origin.setY((int)(dy + 0.5));
|
| - } else {
|
| - dragImage = createDragImageIconForCachedImage(getCachedImage(element));
|
| - if (dragImage)
|
| - origin = IntPoint(DragIconRightInset - dragImageSize(dragImage).width(), DragIconBottomInset);
|
| - }
|
| -
|
| - dragImageOffset.setX(mouseDownPoint.x() + origin.x());
|
| - dragImageOffset.setY(mouseDownPoint.y() + origin.y());
|
| - doSystemDrag(dragImage, dragImageOffset, dragOrigin, clipboard, frame, false);
|
| -
|
| - deleteDragImage(dragImage);
|
| -}
|
| -
|
| -void DragController::doSystemDrag(DragImageRef image, const IntPoint& dragLoc, const IntPoint& eventPos, Clipboard* clipboard, Frame* frame, bool forLink)
|
| -{
|
| - m_didInitiateDrag = true;
|
| - m_dragInitiator = frame->document();
|
| - // Protect this frame and view, as a load may occur mid drag and attempt to unload this frame
|
| - RefPtr<Frame> frameProtector = m_page->mainFrame();
|
| - RefPtr<FrameView> viewProtector = frameProtector->view();
|
| - m_client->startDrag(image, viewProtector->windowToContents(frame->view()->contentsToWindow(dragLoc)),
|
| - viewProtector->windowToContents(frame->view()->contentsToWindow(eventPos)), clipboard, frameProtector.get(), forLink);
|
| -
|
| - // Drag has ended, dragEnded *should* have been called, however it is possible
|
| - // for the UIDelegate to take over the drag, and fail to send the appropriate
|
| - // drag termination event. As dragEnded just resets drag variables, we just
|
| - // call it anyway to be on the safe side
|
| - // Except if drag and drop happens asynchronously, in which case dragging
|
| - // has not ended.
|
| - //dragEnded();
|
| -}
|
| -
|
| -// Manual drag caret manipulation
|
| -void DragController::placeDragCaret(const IntPoint& windowPoint)
|
| -{
|
| - Frame* mainFrame = m_page->mainFrame();
|
| - Document* newDraggingDoc = mainFrame->documentAtPoint(windowPoint);
|
| - if (m_document != newDraggingDoc) {
|
| - if (m_document)
|
| - cancelDrag();
|
| - m_document = newDraggingDoc;
|
| - }
|
| - if (!m_document)
|
| - return;
|
| - Frame* frame = m_document->frame();
|
| - ASSERT(frame);
|
| - FrameView* frameView = frame->view();
|
| - if (!frameView)
|
| - return;
|
| - IntPoint framePoint = frameView->windowToContents(windowPoint);
|
| - Selection dragCaret(frame->visiblePositionForPoint(framePoint));
|
| - m_page->dragCaretController()->setSelection(dragCaret);
|
| -}
|
| -
|
| -}
|
|
|
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