| Index: Source/core/accessibility/AXRenderObject.cpp
|
| diff --git a/Source/core/accessibility/AXRenderObject.cpp b/Source/core/accessibility/AXRenderObject.cpp
|
| deleted file mode 100644
|
| index efe92b306a943aa55dd907236aceae31105bb6f0..0000000000000000000000000000000000000000
|
| --- a/Source/core/accessibility/AXRenderObject.cpp
|
| +++ /dev/null
|
| @@ -1,2444 +0,0 @@
|
| -/*
|
| -* Copyright (C) 2008 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.
|
| -* 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of
|
| -* its contributors may be used to endorse or promote products derived
|
| -* from this software without specific prior written permission.
|
| -*
|
| -* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS 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 "core/accessibility/AXRenderObject.h"
|
| -
|
| -#include "bindings/core/v8/ExceptionStatePlaceholder.h"
|
| -#include "core/InputTypeNames.h"
|
| -#include "core/accessibility/AXImageMapLink.h"
|
| -#include "core/accessibility/AXInlineTextBox.h"
|
| -#include "core/accessibility/AXObjectCacheImpl.h"
|
| -#include "core/accessibility/AXSVGRoot.h"
|
| -#include "core/accessibility/AXSpinButton.h"
|
| -#include "core/accessibility/AXTable.h"
|
| -#include "core/dom/ElementTraversal.h"
|
| -#include "core/dom/shadow/ShadowRoot.h"
|
| -#include "core/editing/FrameSelection.h"
|
| -#include "core/editing/RenderedPosition.h"
|
| -#include "core/editing/TextIterator.h"
|
| -#include "core/editing/VisibleUnits.h"
|
| -#include "core/editing/htmlediting.h"
|
| -#include "core/frame/LocalFrame.h"
|
| -#include "core/frame/Settings.h"
|
| -#include "core/html/HTMLImageElement.h"
|
| -#include "core/html/HTMLLabelElement.h"
|
| -#include "core/html/HTMLOptionElement.h"
|
| -#include "core/html/HTMLSelectElement.h"
|
| -#include "core/html/HTMLTextAreaElement.h"
|
| -#include "core/html/shadow/ShadowElementNames.h"
|
| -#include "core/loader/ProgressTracker.h"
|
| -#include "core/page/Page.h"
|
| -#include "core/rendering/HitTestResult.h"
|
| -#include "core/rendering/RenderFieldset.h"
|
| -#include "core/rendering/RenderFileUploadControl.h"
|
| -#include "core/rendering/RenderHTMLCanvas.h"
|
| -#include "core/rendering/RenderImage.h"
|
| -#include "core/rendering/RenderInline.h"
|
| -#include "core/rendering/RenderLayer.h"
|
| -#include "core/rendering/RenderListMarker.h"
|
| -#include "core/rendering/RenderMenuList.h"
|
| -#include "core/rendering/RenderPart.h"
|
| -#include "core/rendering/RenderTextControlSingleLine.h"
|
| -#include "core/rendering/RenderTextFragment.h"
|
| -#include "core/rendering/RenderView.h"
|
| -#include "core/svg/SVGDocumentExtensions.h"
|
| -#include "core/svg/SVGSVGElement.h"
|
| -#include "core/svg/graphics/SVGImage.h"
|
| -#include "platform/text/PlatformLocale.h"
|
| -#include "wtf/StdLibExtras.h"
|
| -
|
| -using blink::WebLocalizedString;
|
| -
|
| -namespace blink {
|
| -
|
| -using namespace HTMLNames;
|
| -
|
| -static inline RenderObject* firstChildInContinuation(const RenderInline& renderer)
|
| -{
|
| - RenderBoxModelObject* r = renderer.continuation();
|
| -
|
| - while (r) {
|
| - if (r->isRenderBlock())
|
| - return r;
|
| - if (RenderObject* child = r->slowFirstChild())
|
| - return child;
|
| - r = toRenderInline(r)->continuation();
|
| - }
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -static inline bool isInlineWithContinuation(RenderObject* object)
|
| -{
|
| - if (!object->isBoxModelObject())
|
| - return false;
|
| -
|
| - RenderBoxModelObject* renderer = toRenderBoxModelObject(object);
|
| - if (!renderer->isRenderInline())
|
| - return false;
|
| -
|
| - return toRenderInline(renderer)->continuation();
|
| -}
|
| -
|
| -static inline RenderObject* firstChildConsideringContinuation(RenderObject* renderer)
|
| -{
|
| - RenderObject* firstChild = renderer->slowFirstChild();
|
| -
|
| - if (!firstChild && isInlineWithContinuation(renderer))
|
| - firstChild = firstChildInContinuation(toRenderInline(*renderer));
|
| -
|
| - return firstChild;
|
| -}
|
| -
|
| -static inline RenderInline* startOfContinuations(RenderObject* r)
|
| -{
|
| - if (r->isInlineElementContinuation()) {
|
| - return toRenderInline(r->node()->renderer());
|
| - }
|
| -
|
| - // Blocks with a previous continuation always have a next continuation
|
| - if (r->isRenderBlock() && toRenderBlock(r)->inlineElementContinuation())
|
| - return toRenderInline(toRenderBlock(r)->inlineElementContinuation()->node()->renderer());
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -static inline RenderObject* endOfContinuations(RenderObject* renderer)
|
| -{
|
| - RenderObject* prev = renderer;
|
| - RenderObject* cur = renderer;
|
| -
|
| - if (!cur->isRenderInline() && !cur->isRenderBlock())
|
| - return renderer;
|
| -
|
| - while (cur) {
|
| - prev = cur;
|
| - if (cur->isRenderInline()) {
|
| - cur = toRenderInline(cur)->inlineElementContinuation();
|
| - ASSERT(cur || !toRenderInline(prev)->continuation());
|
| - } else {
|
| - cur = toRenderBlock(cur)->inlineElementContinuation();
|
| - }
|
| - }
|
| -
|
| - return prev;
|
| -}
|
| -
|
| -static inline bool lastChildHasContinuation(RenderObject* renderer)
|
| -{
|
| - RenderObject* lastChild = renderer->slowLastChild();
|
| - return lastChild && isInlineWithContinuation(lastChild);
|
| -}
|
| -
|
| -static RenderBoxModelObject* nextContinuation(RenderObject* renderer)
|
| -{
|
| - ASSERT(renderer);
|
| - if (renderer->isRenderInline() && !renderer->isReplaced())
|
| - return toRenderInline(renderer)->continuation();
|
| - if (renderer->isRenderBlock())
|
| - return toRenderBlock(renderer)->inlineElementContinuation();
|
| - return 0;
|
| -}
|
| -
|
| -AXRenderObject::AXRenderObject(RenderObject* renderer)
|
| - : AXNodeObject(renderer->node())
|
| - , m_renderer(renderer)
|
| - , m_cachedElementRectDirty(true)
|
| -{
|
| -#if ENABLE(ASSERT)
|
| - m_renderer->setHasAXObject(true);
|
| -#endif
|
| -}
|
| -
|
| -PassRefPtr<AXRenderObject> AXRenderObject::create(RenderObject* renderer)
|
| -{
|
| - return adoptRef(new AXRenderObject(renderer));
|
| -}
|
| -
|
| -AXRenderObject::~AXRenderObject()
|
| -{
|
| - ASSERT(isDetached());
|
| -}
|
| -
|
| -LayoutRect AXRenderObject::elementRect() const
|
| -{
|
| - if (!m_explicitElementRect.isEmpty())
|
| - return m_explicitElementRect;
|
| - if (!m_renderer)
|
| - return LayoutRect();
|
| - if (!m_renderer->isBox())
|
| - return computeElementRect();
|
| -
|
| - for (const AXObject* obj = this; obj; obj = obj->parentObject()) {
|
| - if (obj->isAXRenderObject())
|
| - toAXRenderObject(obj)->checkCachedElementRect();
|
| - }
|
| - for (const AXObject* obj = this; obj; obj = obj->parentObject()) {
|
| - if (obj->isAXRenderObject())
|
| - toAXRenderObject(obj)->updateCachedElementRect();
|
| - }
|
| -
|
| - return m_cachedElementRect;
|
| -}
|
| -
|
| -void AXRenderObject::setRenderer(RenderObject* renderer)
|
| -{
|
| - m_renderer = renderer;
|
| - setNode(renderer->node());
|
| -}
|
| -
|
| -RenderBoxModelObject* AXRenderObject::renderBoxModelObject() const
|
| -{
|
| - if (!m_renderer || !m_renderer->isBoxModelObject())
|
| - return 0;
|
| - return toRenderBoxModelObject(m_renderer);
|
| -}
|
| -
|
| -Document* AXRenderObject::topDocument() const
|
| -{
|
| - if (!document())
|
| - return 0;
|
| - return &document()->topDocument();
|
| -}
|
| -
|
| -bool AXRenderObject::shouldNotifyActiveDescendant() const
|
| -{
|
| - // We want to notify that the combo box has changed its active descendant,
|
| - // but we do not want to change the focus, because focus should remain with the combo box.
|
| - if (isComboBox())
|
| - return true;
|
| -
|
| - return shouldFocusActiveDescendant();
|
| -}
|
| -
|
| -ScrollableArea* AXRenderObject::getScrollableAreaIfScrollable() const
|
| -{
|
| - // If the parent is a FrameView, then this object isn't really scrollable; the parent should handle the scrolling.
|
| - if (parentObject() && parentObject()->isAXScrollView())
|
| - return 0;
|
| -
|
| - if (!m_renderer || !m_renderer->isBox())
|
| - return 0;
|
| -
|
| - RenderBox* box = toRenderBox(m_renderer);
|
| - if (!box->canBeScrolledAndHasScrollableArea())
|
| - return 0;
|
| -
|
| - return box->scrollableArea();
|
| -}
|
| -
|
| -AccessibilityRole AXRenderObject::determineAccessibilityRole()
|
| -{
|
| - if (!m_renderer)
|
| - return UnknownRole;
|
| -
|
| - m_ariaRole = determineAriaRoleAttribute();
|
| -
|
| - Node* node = m_renderer->node();
|
| - AccessibilityRole ariaRole = ariaRoleAttribute();
|
| - if (ariaRole != UnknownRole)
|
| - return ariaRole;
|
| -
|
| - RenderBoxModelObject* cssBox = renderBoxModelObject();
|
| -
|
| - if (node && node->isLink()) {
|
| - if (cssBox && cssBox->isImage())
|
| - return ImageMapRole;
|
| - return LinkRole;
|
| - }
|
| - if ((cssBox && cssBox->isListItem()) || isHTMLLIElement(node))
|
| - return ListItemRole;
|
| - if (m_renderer->isListMarker())
|
| - return ListMarkerRole;
|
| - if (isHTMLButtonElement(node))
|
| - return buttonRoleType();
|
| - if (isHTMLDetailsElement(node))
|
| - return DetailsRole;
|
| - if (isHTMLSummaryElement(node)) {
|
| - if (node->parentElement() && isHTMLDetailsElement(node->parentElement()))
|
| - return DisclosureTriangleRole;
|
| - return UnknownRole;
|
| - }
|
| - if (isHTMLLegendElement(node))
|
| - return LegendRole;
|
| - if (m_renderer->isText())
|
| - return StaticTextRole;
|
| - if (cssBox && cssBox->isImage()) {
|
| - if (isHTMLInputElement(node))
|
| - return ariaHasPopup() ? PopUpButtonRole : ButtonRole;
|
| - if (isSVGImage())
|
| - return SVGRootRole;
|
| - return ImageRole;
|
| - }
|
| -
|
| - // Note: if JavaScript is disabled, the renderer won't be a RenderHTMLCanvas.
|
| - if (isHTMLCanvasElement(node) && m_renderer->isCanvas())
|
| - return CanvasRole;
|
| -
|
| - if (cssBox && cssBox->isRenderView())
|
| - return WebAreaRole;
|
| -
|
| - if (cssBox && cssBox->isTextField())
|
| - return TextFieldRole;
|
| -
|
| - if (cssBox && cssBox->isTextArea())
|
| - return TextAreaRole;
|
| -
|
| - if (isHTMLInputElement(node)) {
|
| - HTMLInputElement& input = toHTMLInputElement(*node);
|
| - const AtomicString& type = input.type();
|
| - if (type == InputTypeNames::button) {
|
| - if ((node->parentNode() && isHTMLMenuElement(node->parentNode())) || (parentObject() && parentObject()->roleValue() == MenuRole))
|
| - return MenuItemRole;
|
| - return buttonRoleType();
|
| - }
|
| - if (type == InputTypeNames::checkbox) {
|
| - if ((node->parentNode() && isHTMLMenuElement(node->parentNode())) || (parentObject() && parentObject()->roleValue() == MenuRole))
|
| - return MenuItemCheckBoxRole;
|
| - return CheckBoxRole;
|
| - }
|
| - if (type == InputTypeNames::date)
|
| - return DateRole;
|
| - if (type == InputTypeNames::datetime
|
| - || type == InputTypeNames::datetime_local
|
| - || type == InputTypeNames::month
|
| - || type == InputTypeNames::week)
|
| - return DateTimeRole;
|
| - if (type == InputTypeNames::radio) {
|
| - if ((node->parentNode() && isHTMLMenuElement(node->parentNode())) || (parentObject() && parentObject()->roleValue() == MenuRole))
|
| - return MenuItemRadioRole;
|
| - return RadioButtonRole;
|
| - }
|
| - if (input.isTextButton())
|
| - return buttonRoleType();
|
| - if (type == InputTypeNames::color)
|
| - return ColorWellRole;
|
| - if (type == InputTypeNames::time)
|
| - return TimeRole;
|
| - }
|
| -
|
| - if (isFileUploadButton())
|
| - return ButtonRole;
|
| -
|
| - if (cssBox && cssBox->isMenuList())
|
| - return PopUpButtonRole;
|
| -
|
| - if (headingLevel())
|
| - return HeadingRole;
|
| -
|
| - if (m_renderer->isSVGImage())
|
| - return ImageRole;
|
| - if (m_renderer->isSVGRoot())
|
| - return SVGRootRole;
|
| -
|
| - if (node && node->hasTagName(ddTag))
|
| - return DescriptionListDetailRole;
|
| -
|
| - if (node && node->hasTagName(dlTag))
|
| - return DescriptionListRole;
|
| -
|
| - if (node && node->hasTagName(dtTag))
|
| - return DescriptionListTermRole;
|
| -
|
| - if (node && (node->hasTagName(rpTag) || node->hasTagName(rtTag)))
|
| - return AnnotationRole;
|
| -
|
| - // Table sections should be ignored.
|
| - if (m_renderer->isTableSection())
|
| - return IgnoredRole;
|
| -
|
| - if (m_renderer->isHR())
|
| - return HorizontalRuleRole;
|
| -
|
| - if (isHTMLOutputElement(node))
|
| - return StatusRole;
|
| -
|
| - if (isHTMLParagraphElement(node))
|
| - return ParagraphRole;
|
| -
|
| - if (isHTMLLabelElement(node))
|
| - return LabelRole;
|
| -
|
| - if (isHTMLRubyElement(node))
|
| - return RubyRole;
|
| -
|
| - if (isHTMLDivElement(node))
|
| - return DivRole;
|
| -
|
| - if (isHTMLMeterElement(node))
|
| - return MeterRole;
|
| -
|
| - if (isHTMLFormElement(node))
|
| - return FormRole;
|
| -
|
| - if (node && node->hasTagName(articleTag))
|
| - return ArticleRole;
|
| -
|
| - if (node && node->hasTagName(blockquoteTag))
|
| - return BlockquoteRole;
|
| -
|
| - if (node && node->hasTagName(mainTag))
|
| - return MainRole;
|
| -
|
| - if (node && node->hasTagName(navTag))
|
| - return NavigationRole;
|
| -
|
| - if (node && node->hasTagName(asideTag))
|
| - return ComplementaryRole;
|
| -
|
| - if (node && node->hasTagName(preTag))
|
| - return PreRole;
|
| -
|
| - if (node && node->hasTagName(sectionTag))
|
| - return RegionRole;
|
| -
|
| - if (node && node->hasTagName(addressTag))
|
| - return ContentInfoRole;
|
| -
|
| - if (node && node->hasTagName(dialogTag))
|
| - return DialogRole;
|
| -
|
| - // The HTML element should not be exposed as an element. That's what the RenderView element does.
|
| - if (isHTMLHtmlElement(node))
|
| - return IgnoredRole;
|
| -
|
| - if (node && node->hasTagName(iframeTag))
|
| - return IframeRole;
|
| -
|
| - if (isEmbeddedObject())
|
| - return EmbeddedObjectRole;
|
| -
|
| - if (node && node->hasTagName(figcaptionTag))
|
| - return FigcaptionRole;
|
| -
|
| - if (node && node->hasTagName(figureTag))
|
| - return FigureRole;
|
| -
|
| - // There should only be one banner/contentInfo per page. If header/footer are being used within an article or section
|
| - // then it should not be exposed as whole page's banner/contentInfo
|
| - if (node && node->hasTagName(headerTag) && !isDescendantOfElementType(articleTag) && !isDescendantOfElementType(sectionTag))
|
| - return BannerRole;
|
| - if (node && node->hasTagName(footerTag) && !isDescendantOfElementType(articleTag) && !isDescendantOfElementType(sectionTag))
|
| - return FooterRole;
|
| -
|
| - if (isHTMLAnchorElement(node) && isClickable())
|
| - return LinkRole;
|
| -
|
| - if (m_renderer->isRenderBlockFlow())
|
| - return GroupRole;
|
| -
|
| - // If the element does not have role, but it has ARIA attributes, accessibility should fallback to exposing it as a group.
|
| - if (supportsARIAAttributes())
|
| - return GroupRole;
|
| -
|
| - return UnknownRole;
|
| -}
|
| -
|
| -void AXRenderObject::init()
|
| -{
|
| - AXNodeObject::init();
|
| -}
|
| -
|
| -void AXRenderObject::detach()
|
| -{
|
| - AXNodeObject::detach();
|
| -
|
| - detachRemoteSVGRoot();
|
| -
|
| -#if ENABLE(ASSERT)
|
| - if (m_renderer)
|
| - m_renderer->setHasAXObject(false);
|
| -#endif
|
| - m_renderer = 0;
|
| -}
|
| -
|
| -//
|
| -// Check object role or purpose.
|
| -//
|
| -
|
| -bool AXRenderObject::isAttachment() const
|
| -{
|
| - RenderBoxModelObject* renderer = renderBoxModelObject();
|
| - if (!renderer)
|
| - return false;
|
| - // Widgets are the replaced elements that we represent to AX as attachments
|
| - bool isRenderPart = renderer->isRenderPart();
|
| - ASSERT(!isRenderPart || (renderer->isReplaced() && !isImage()));
|
| - return isRenderPart;
|
| -}
|
| -
|
| -bool AXRenderObject::isFileUploadButton() const
|
| -{
|
| - return m_renderer && isHTMLInputElement(m_renderer->node()) && toHTMLInputElement(*m_renderer->node()).type() == InputTypeNames::file;
|
| -}
|
| -
|
| -static bool isLinkable(const AXObject& object)
|
| -{
|
| - if (!object.renderer())
|
| - return false;
|
| -
|
| - // See https://wiki.mozilla.org/Accessibility/AT-Windows-API for the elements
|
| - // Mozilla considers linkable.
|
| - return object.isLink() || object.isImage() || object.renderer()->isText();
|
| -}
|
| -
|
| -bool AXRenderObject::isLinked() const
|
| -{
|
| - if (!isLinkable(*this))
|
| - return false;
|
| -
|
| - Element* anchor = anchorElement();
|
| - if (!isHTMLAnchorElement(anchor))
|
| - return false;
|
| -
|
| - return !toHTMLAnchorElement(*anchor).href().isEmpty();
|
| -}
|
| -
|
| -bool AXRenderObject::isLoaded() const
|
| -{
|
| - return !m_renderer->document().parser();
|
| -}
|
| -
|
| -bool AXRenderObject::isOffScreen() const
|
| -{
|
| - ASSERT(m_renderer);
|
| - IntRect contentRect = pixelSnappedIntRect(m_renderer->absoluteClippedOverflowRect());
|
| - FrameView* view = m_renderer->frame()->view();
|
| - IntRect viewRect = view->visibleContentRect();
|
| - viewRect.intersect(contentRect);
|
| - return viewRect.isEmpty();
|
| -}
|
| -
|
| -bool AXRenderObject::isReadOnly() const
|
| -{
|
| - ASSERT(m_renderer);
|
| -
|
| - if (isWebArea()) {
|
| - Document& document = m_renderer->document();
|
| - HTMLElement* body = document.body();
|
| - if (body && body->hasEditableStyle())
|
| - return false;
|
| -
|
| - return !document.hasEditableStyle();
|
| - }
|
| -
|
| - return AXNodeObject::isReadOnly();
|
| -}
|
| -
|
| -bool AXRenderObject::isVisited() const
|
| -{
|
| - // FIXME: Is it a privacy violation to expose visited information to accessibility APIs?
|
| - return m_renderer->style()->isLink() && m_renderer->style()->insideLink() == InsideVisitedLink;
|
| -}
|
| -
|
| -//
|
| -// Check object state.
|
| -//
|
| -
|
| -bool AXRenderObject::isFocused() const
|
| -{
|
| - if (!m_renderer)
|
| - return false;
|
| -
|
| - Document& document = m_renderer->document();
|
| - Element* focusedElement = document.focusedElement();
|
| - if (!focusedElement)
|
| - return false;
|
| -
|
| - // A web area is represented by the Document node in the DOM tree, which isn't focusable.
|
| - // Check instead if the frame's selection controller is focused
|
| - if (focusedElement == m_renderer->node()
|
| - || (roleValue() == WebAreaRole && document.frame()->selection().isFocusedAndActive()))
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -bool AXRenderObject::isSelected() const
|
| -{
|
| - if (!m_renderer)
|
| - return false;
|
| -
|
| - Node* node = m_renderer->node();
|
| - if (!node)
|
| - return false;
|
| -
|
| - const AtomicString& ariaSelected = getAttribute(aria_selectedAttr);
|
| - if (equalIgnoringCase(ariaSelected, "true"))
|
| - return true;
|
| -
|
| - if (isTabItem() && isTabItemSelected())
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -//
|
| -// Whether objects are ignored, i.e. not included in the tree.
|
| -//
|
| -
|
| -AXObjectInclusion AXRenderObject::defaultObjectInclusion() const
|
| -{
|
| - // The following cases can apply to any element that's a subclass of AXRenderObject.
|
| -
|
| - if (!m_renderer)
|
| - return IgnoreObject;
|
| -
|
| - if (m_renderer->style()->visibility() != VISIBLE) {
|
| - // aria-hidden is meant to override visibility as the determinant in AX hierarchy inclusion.
|
| - if (equalIgnoringCase(getAttribute(aria_hiddenAttr), "false"))
|
| - return DefaultBehavior;
|
| -
|
| - return IgnoreObject;
|
| - }
|
| -
|
| - return AXObject::defaultObjectInclusion();
|
| -}
|
| -
|
| -bool AXRenderObject::computeAccessibilityIsIgnored() const
|
| -{
|
| -#if ENABLE(ASSERT)
|
| - ASSERT(m_initialized);
|
| -#endif
|
| -
|
| - // Check first if any of the common reasons cause this element to be ignored.
|
| - // Then process other use cases that need to be applied to all the various roles
|
| - // that AXRenderObjects take on.
|
| - AXObjectInclusion decision = defaultObjectInclusion();
|
| - if (decision == IncludeObject)
|
| - return false;
|
| - if (decision == IgnoreObject)
|
| - return true;
|
| -
|
| - // If this element is within a parent that cannot have children, it should not be exposed.
|
| - if (isDescendantOfBarrenParent())
|
| - return true;
|
| -
|
| - if (roleValue() == IgnoredRole)
|
| - return true;
|
| -
|
| - if ((roleValue() == NoneRole || roleValue() == PresentationalRole) || inheritsPresentationalRole())
|
| - return true;
|
| -
|
| - // An ARIA tree can only have tree items and static text as children.
|
| - if (!isAllowedChildOfTree())
|
| - return true;
|
| -
|
| - // TODO: we should refactor this - but right now this is necessary to make
|
| - // sure scroll areas stay in the tree.
|
| - if (isAttachment())
|
| - return false;
|
| -
|
| - // ignore popup menu items because AppKit does
|
| - for (RenderObject* parent = m_renderer->parent(); parent; parent = parent->parent()) {
|
| - if (parent->isBoxModelObject() && toRenderBoxModelObject(parent)->isMenuList())
|
| - return true;
|
| - }
|
| -
|
| - // find out if this element is inside of a label element.
|
| - // if so, it may be ignored because it's the label for a checkbox or radio button
|
| - AXObject* controlObject = correspondingControlForLabelElement();
|
| - if (controlObject && !controlObject->exposesTitleUIElement() && controlObject->isCheckboxOrRadio())
|
| - return true;
|
| -
|
| - // NOTE: BRs always have text boxes now, so the text box check here can be removed
|
| - if (m_renderer->isText()) {
|
| - // static text beneath MenuItems and MenuButtons are just reported along with the menu item, so it's ignored on an individual level
|
| - AXObject* parent = parentObjectUnignored();
|
| - if (parent && (parent->ariaRoleAttribute() == MenuItemRole || parent->ariaRoleAttribute() == MenuButtonRole))
|
| - return true;
|
| - RenderText* renderText = toRenderText(m_renderer);
|
| - if (m_renderer->isBR() || !renderText->firstTextBox())
|
| - return true;
|
| -
|
| - // Don't ignore static text in editable text controls.
|
| - for (AXObject* parent = parentObject(); parent; parent = parent->parentObject()) {
|
| - if (parent->roleValue() == TextFieldRole || parent->roleValue() == TextAreaRole)
|
| - return false;
|
| - }
|
| -
|
| - // text elements that are just empty whitespace should not be returned
|
| - // FIXME(dmazzoni): we probably shouldn't ignore this if the style is 'pre', or similar...
|
| - return renderText->text().impl()->containsOnlyWhitespace();
|
| - }
|
| -
|
| - if (isHeading())
|
| - return false;
|
| -
|
| - if (isLandmarkRelated())
|
| - return false;
|
| -
|
| - if (isLink())
|
| - return false;
|
| -
|
| - // all controls are accessible
|
| - if (isControl())
|
| - return false;
|
| -
|
| - if (ariaRoleAttribute() != UnknownRole)
|
| - return false;
|
| -
|
| - // don't ignore labels, because they serve as TitleUIElements
|
| - Node* node = m_renderer->node();
|
| - if (isHTMLLabelElement(node))
|
| - return false;
|
| -
|
| - // Anything that is content editable should not be ignored.
|
| - // However, one cannot just call node->hasEditableStyle() since that will ask if its parents
|
| - // are also editable. Only the top level content editable region should be exposed.
|
| - if (hasContentEditableAttributeSet())
|
| - return false;
|
| -
|
| - // List items play an important role in defining the structure of lists. They should not be ignored.
|
| - if (roleValue() == ListItemRole)
|
| - return false;
|
| -
|
| - if (roleValue() == BlockquoteRole)
|
| - return false;
|
| -
|
| - if (roleValue() == DialogRole)
|
| - return false;
|
| -
|
| - if (roleValue() == FigcaptionRole)
|
| - return false;
|
| -
|
| - if (roleValue() == FigureRole)
|
| - return false;
|
| -
|
| - if (roleValue() == DetailsRole)
|
| - return false;
|
| -
|
| - if (roleValue() == MeterRole)
|
| - return false;
|
| -
|
| - if (roleValue() == RubyRole)
|
| - return false;
|
| -
|
| - // if this element has aria attributes on it, it should not be ignored.
|
| - if (supportsARIAAttributes())
|
| - return false;
|
| -
|
| - // <span> tags are inline tags and not meant to convey information if they have no other aria
|
| - // information on them. If we don't ignore them, they may emit signals expected to come from
|
| - // their parent. In addition, because included spans are GroupRole objects, and GroupRole
|
| - // objects are often containers with meaningful information, the inclusion of a span can have
|
| - // the side effect of causing the immediate parent accessible to be ignored. This is especially
|
| - // problematic for platforms which have distinct roles for textual block elements.
|
| - if (isHTMLSpanElement(node))
|
| - return true;
|
| -
|
| - if (m_renderer->isRenderBlockFlow() && m_renderer->childrenInline() && !canSetFocusAttribute())
|
| - return !toRenderBlockFlow(m_renderer)->firstLineBox() && !mouseButtonListener();
|
| -
|
| - // ignore images seemingly used as spacers
|
| - if (isImage()) {
|
| -
|
| - // If the image can take focus, it should not be ignored, lest the user not be able to interact with something important.
|
| - if (canSetFocusAttribute())
|
| - return false;
|
| -
|
| - if (node && node->isElementNode()) {
|
| - Element* elt = toElement(node);
|
| - const AtomicString& alt = elt->getAttribute(altAttr);
|
| - // don't ignore an image that has an alt tag
|
| - if (!alt.string().containsOnlyWhitespace())
|
| - return false;
|
| - // informal standard is to ignore images with zero-length alt strings
|
| - if (!alt.isNull())
|
| - return true;
|
| - }
|
| -
|
| - if (isNativeImage() && m_renderer->isImage()) {
|
| - // check for one-dimensional image
|
| - RenderImage* image = toRenderImage(m_renderer);
|
| - if (image->height() <= 1 || image->width() <= 1)
|
| - return true;
|
| -
|
| - // check whether rendered image was stretched from one-dimensional file image
|
| - if (image->cachedImage()) {
|
| - LayoutSize imageSize = image->cachedImage()->imageSizeForRenderer(m_renderer, image->view()->zoomFactor());
|
| - return imageSize.height() <= 1 || imageSize.width() <= 1;
|
| - }
|
| - }
|
| - return false;
|
| - }
|
| -
|
| - if (isCanvas()) {
|
| - if (canvasHasFallbackContent())
|
| - return false;
|
| - RenderHTMLCanvas* canvas = toRenderHTMLCanvas(m_renderer);
|
| - if (canvas->height() <= 1 || canvas->width() <= 1)
|
| - return true;
|
| - // Otherwise fall through; use presence of help text, title, or description to decide.
|
| - }
|
| -
|
| - if (isWebArea() || m_renderer->isListMarker())
|
| - return false;
|
| -
|
| - // Using the help text, title or accessibility description (so we
|
| - // check if there's some kind of accessible name for the element)
|
| - // to decide an element's visibility is not as definitive as
|
| - // previous checks, so this should remain as one of the last.
|
| - //
|
| - // These checks are simplified in the interest of execution speed;
|
| - // for example, any element having an alt attribute will make it
|
| - // not ignored, rather than just images.
|
| - if (!getAttribute(aria_helpAttr).isEmpty() || !getAttribute(aria_describedbyAttr).isEmpty() || !getAttribute(altAttr).isEmpty() || !getAttribute(titleAttr).isEmpty())
|
| - return false;
|
| -
|
| - // Don't ignore generic focusable elements like <div tabindex=0>
|
| - // unless they're completely empty, with no children.
|
| - if (isGenericFocusableElement() && node->hasChildren())
|
| - return false;
|
| -
|
| - if (!ariaAccessibilityDescription().isEmpty())
|
| - return false;
|
| -
|
| - // By default, objects should be ignored so that the AX hierarchy is not
|
| - // filled with unnecessary items.
|
| - return true;
|
| -}
|
| -
|
| -//
|
| -// Properties of static elements.
|
| -//
|
| -
|
| -const AtomicString& AXRenderObject::accessKey() const
|
| -{
|
| - Node* node = m_renderer->node();
|
| - if (!node)
|
| - return nullAtom;
|
| - if (!node->isElementNode())
|
| - return nullAtom;
|
| - return toElement(node)->getAttribute(accesskeyAttr);
|
| -}
|
| -
|
| -AccessibilityOrientation AXRenderObject::orientation() const
|
| -{
|
| - const AtomicString& ariaOrientation = getAttribute(aria_orientationAttr);
|
| - if (equalIgnoringCase(ariaOrientation, "horizontal"))
|
| - return AccessibilityOrientationHorizontal;
|
| - if (equalIgnoringCase(ariaOrientation, "vertical"))
|
| - return AccessibilityOrientationVertical;
|
| -
|
| - return AXObject::orientation();
|
| -}
|
| -
|
| -String AXRenderObject::text() const
|
| -{
|
| - if (isPasswordFieldAndShouldHideValue())
|
| - return String();
|
| -
|
| - return AXNodeObject::text();
|
| -}
|
| -
|
| -int AXRenderObject::textLength() const
|
| -{
|
| - if (!isTextControl())
|
| - return -1;
|
| -
|
| - if (isPasswordFieldAndShouldHideValue())
|
| - return -1; // need to return something distinct from 0
|
| -
|
| - return text().length();
|
| -}
|
| -
|
| -KURL AXRenderObject::url() const
|
| -{
|
| - if (isAnchor() && isHTMLAnchorElement(m_renderer->node())) {
|
| - if (HTMLAnchorElement* anchor = toHTMLAnchorElement(anchorElement()))
|
| - return anchor->href();
|
| - }
|
| -
|
| - if (isWebArea())
|
| - return m_renderer->document().url();
|
| -
|
| - if (isImage() && isHTMLImageElement(m_renderer->node()))
|
| - return toHTMLImageElement(*m_renderer->node()).src();
|
| -
|
| - if (isInputImage())
|
| - return toHTMLInputElement(m_renderer->node())->src();
|
| -
|
| - return KURL();
|
| -}
|
| -
|
| -//
|
| -// Properties of interactive elements.
|
| -//
|
| -
|
| -static String queryString(WebLocalizedString::Name name)
|
| -{
|
| - return Locale::defaultLocale().queryString(name);
|
| -}
|
| -
|
| -String AXRenderObject::actionVerb() const
|
| -{
|
| - switch (roleValue()) {
|
| - case ButtonRole:
|
| - case ToggleButtonRole:
|
| - return queryString(WebLocalizedString::AXButtonActionVerb);
|
| - case TextFieldRole:
|
| - case TextAreaRole:
|
| - return queryString(WebLocalizedString::AXTextFieldActionVerb);
|
| - case RadioButtonRole:
|
| - return queryString(WebLocalizedString::AXRadioButtonActionVerb);
|
| - case CheckBoxRole:
|
| - return queryString(isChecked() ? WebLocalizedString::AXCheckedCheckBoxActionVerb : WebLocalizedString::AXUncheckedCheckBoxActionVerb);
|
| - case LinkRole:
|
| - return queryString(WebLocalizedString::AXLinkActionVerb);
|
| - default:
|
| - return emptyString();
|
| - }
|
| -}
|
| -
|
| -String AXRenderObject::stringValue() const
|
| -{
|
| - if (!m_renderer)
|
| - return String();
|
| -
|
| - if (isPasswordFieldAndShouldHideValue())
|
| - return String();
|
| -
|
| - RenderBoxModelObject* cssBox = renderBoxModelObject();
|
| -
|
| - if (ariaRoleAttribute() == StaticTextRole) {
|
| - String staticText = text();
|
| - if (!staticText.length())
|
| - staticText = textUnderElement();
|
| - return staticText;
|
| - }
|
| -
|
| - if (m_renderer->isText())
|
| - return textUnderElement();
|
| -
|
| - if (cssBox && cssBox->isMenuList()) {
|
| - // RenderMenuList will go straight to the text() of its selected item.
|
| - // This has to be overridden in the case where the selected item has an ARIA label.
|
| - HTMLSelectElement* selectElement = toHTMLSelectElement(m_renderer->node());
|
| - int selectedIndex = selectElement->selectedIndex();
|
| - const WillBeHeapVector<RawPtrWillBeMember<HTMLElement> >& listItems = selectElement->listItems();
|
| - if (selectedIndex >= 0 && static_cast<size_t>(selectedIndex) < listItems.size()) {
|
| - const AtomicString& overriddenDescription = listItems[selectedIndex]->fastGetAttribute(aria_labelAttr);
|
| - if (!overriddenDescription.isNull())
|
| - return overriddenDescription;
|
| - }
|
| - return toRenderMenuList(m_renderer)->text();
|
| - }
|
| -
|
| - if (m_renderer->isListMarker())
|
| - return toRenderListMarker(m_renderer)->text();
|
| -
|
| - if (isWebArea()) {
|
| - // FIXME: Why would a renderer exist when the Document isn't attached to a frame?
|
| - if (m_renderer->frame())
|
| - return String();
|
| -
|
| - ASSERT_NOT_REACHED();
|
| - }
|
| -
|
| - if (isTextControl())
|
| - return text();
|
| -
|
| - if (m_renderer->isFileUploadControl())
|
| - return toRenderFileUploadControl(m_renderer)->fileTextValue();
|
| -
|
| - // FIXME: We might need to implement a value here for more types
|
| - // FIXME: It would be better not to advertise a value at all for the types for which we don't implement one;
|
| - // this would require subclassing or making accessibilityAttributeNames do something other than return a
|
| - // single static array.
|
| - return String();
|
| -}
|
| -
|
| -//
|
| -// ARIA attributes.
|
| -//
|
| -
|
| -AXObject* AXRenderObject::activeDescendant() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - if (m_renderer->node() && !m_renderer->node()->isElementNode())
|
| - return 0;
|
| -
|
| - Element* element = toElement(m_renderer->node());
|
| - if (!element)
|
| - return 0;
|
| -
|
| - const AtomicString& activeDescendantAttrStr = element->getAttribute(aria_activedescendantAttr);
|
| - if (activeDescendantAttrStr.isNull() || activeDescendantAttrStr.isEmpty())
|
| - return 0;
|
| -
|
| - Element* target = element->treeScope().getElementById(activeDescendantAttrStr);
|
| - if (!target)
|
| - return 0;
|
| -
|
| - AXObject* obj = axObjectCache()->getOrCreate(target);
|
| -
|
| - // An activedescendant is only useful if it has a renderer, because that's what's needed to post the notification.
|
| - if (obj && obj->isAXRenderObject())
|
| - return obj;
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -void AXRenderObject::accessibilityChildrenFromAttribute(QualifiedName attr, AccessibilityChildrenVector& children) const
|
| -{
|
| - WillBeHeapVector<RawPtrWillBeMember<Element> > elements;
|
| - elementsFromAttribute(elements, attr);
|
| -
|
| - AXObjectCacheImpl* cache = axObjectCache();
|
| - unsigned count = elements.size();
|
| - for (unsigned k = 0; k < count; ++k) {
|
| - Element* element = elements[k];
|
| - AXObject* child = cache->getOrCreate(element);
|
| - if (child)
|
| - children.append(child);
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::ariaFlowToElements(AccessibilityChildrenVector& flowTo) const
|
| -{
|
| - accessibilityChildrenFromAttribute(aria_flowtoAttr, flowTo);
|
| -}
|
| -
|
| -void AXRenderObject::ariaControlsElements(AccessibilityChildrenVector& controls) const
|
| -{
|
| - accessibilityChildrenFromAttribute(aria_controlsAttr, controls);
|
| -}
|
| -
|
| -void AXRenderObject::ariaDescribedbyElements(AccessibilityChildrenVector& describedby) const
|
| -{
|
| - accessibilityChildrenFromAttribute(aria_describedbyAttr, describedby);
|
| -}
|
| -
|
| -void AXRenderObject::ariaLabelledbyElements(AccessibilityChildrenVector& labelledby) const
|
| -{
|
| - accessibilityChildrenFromAttribute(aria_labelledbyAttr, labelledby);
|
| -}
|
| -
|
| -void AXRenderObject::ariaOwnsElements(AccessibilityChildrenVector& owns) const
|
| -{
|
| - accessibilityChildrenFromAttribute(aria_ownsAttr, owns);
|
| -}
|
| -
|
| -bool AXRenderObject::ariaHasPopup() const
|
| -{
|
| - return elementAttributeValue(aria_haspopupAttr);
|
| -}
|
| -
|
| -bool AXRenderObject::ariaRoleHasPresentationalChildren() const
|
| -{
|
| - switch (m_ariaRole) {
|
| - case ButtonRole:
|
| - case SliderRole:
|
| - case ImageRole:
|
| - case ProgressIndicatorRole:
|
| - case SpinButtonRole:
|
| - // case SeparatorRole:
|
| - return true;
|
| - default:
|
| - return false;
|
| - }
|
| -}
|
| -
|
| -bool AXRenderObject::isPresentationalChildOfAriaRole() const
|
| -{
|
| - // Walk the parent chain looking for a parent that has presentational children
|
| - AXObject* parent;
|
| - for (parent = parentObject(); parent && !parent->ariaRoleHasPresentationalChildren(); parent = parent->parentObject())
|
| - { }
|
| -
|
| - return parent;
|
| -}
|
| -
|
| -bool AXRenderObject::shouldFocusActiveDescendant() const
|
| -{
|
| - switch (ariaRoleAttribute()) {
|
| - case ComboBoxRole:
|
| - case GridRole:
|
| - case GroupRole:
|
| - case ListBoxRole:
|
| - case MenuRole:
|
| - case MenuBarRole:
|
| - case OutlineRole:
|
| - case PopUpButtonRole:
|
| - case ProgressIndicatorRole:
|
| - case RadioGroupRole:
|
| - case RowRole:
|
| - case TabListRole:
|
| - case ToolbarRole:
|
| - case TreeRole:
|
| - case TreeGridRole:
|
| - return true;
|
| - default:
|
| - return false;
|
| - }
|
| -}
|
| -
|
| -bool AXRenderObject::supportsARIADragging() const
|
| -{
|
| - const AtomicString& grabbed = getAttribute(aria_grabbedAttr);
|
| - return equalIgnoringCase(grabbed, "true") || equalIgnoringCase(grabbed, "false");
|
| -}
|
| -
|
| -bool AXRenderObject::supportsARIADropping() const
|
| -{
|
| - const AtomicString& dropEffect = getAttribute(aria_dropeffectAttr);
|
| - return !dropEffect.isEmpty();
|
| -}
|
| -
|
| -bool AXRenderObject::supportsARIAFlowTo() const
|
| -{
|
| - return !getAttribute(aria_flowtoAttr).isEmpty();
|
| -}
|
| -
|
| -bool AXRenderObject::supportsARIAOwns() const
|
| -{
|
| - if (!m_renderer)
|
| - return false;
|
| - const AtomicString& ariaOwns = getAttribute(aria_ownsAttr);
|
| -
|
| - return !ariaOwns.isEmpty();
|
| -}
|
| -
|
| -//
|
| -// ARIA live-region features.
|
| -//
|
| -
|
| -const AtomicString& AXRenderObject::liveRegionStatus() const
|
| -{
|
| - DEFINE_STATIC_LOCAL(const AtomicString, liveRegionStatusAssertive, ("assertive", AtomicString::ConstructFromLiteral));
|
| - DEFINE_STATIC_LOCAL(const AtomicString, liveRegionStatusPolite, ("polite", AtomicString::ConstructFromLiteral));
|
| - DEFINE_STATIC_LOCAL(const AtomicString, liveRegionStatusOff, ("off", AtomicString::ConstructFromLiteral));
|
| -
|
| - const AtomicString& liveRegionStatus = getAttribute(aria_liveAttr);
|
| - // These roles have implicit live region status.
|
| - if (liveRegionStatus.isEmpty()) {
|
| - switch (roleValue()) {
|
| - case AlertDialogRole:
|
| - case AlertRole:
|
| - return liveRegionStatusAssertive;
|
| - case LogRole:
|
| - case StatusRole:
|
| - return liveRegionStatusPolite;
|
| - case TimerRole:
|
| - case MarqueeRole:
|
| - return liveRegionStatusOff;
|
| - default:
|
| - break;
|
| - }
|
| - }
|
| -
|
| - return liveRegionStatus;
|
| -}
|
| -
|
| -const AtomicString& AXRenderObject::liveRegionRelevant() const
|
| -{
|
| - DEFINE_STATIC_LOCAL(const AtomicString, defaultLiveRegionRelevant, ("additions text", AtomicString::ConstructFromLiteral));
|
| - const AtomicString& relevant = getAttribute(aria_relevantAttr);
|
| -
|
| - // Default aria-relevant = "additions text".
|
| - if (relevant.isEmpty())
|
| - return defaultLiveRegionRelevant;
|
| -
|
| - return relevant;
|
| -}
|
| -
|
| -bool AXRenderObject::liveRegionAtomic() const
|
| -{
|
| - return elementAttributeValue(aria_atomicAttr);
|
| -}
|
| -
|
| -bool AXRenderObject::liveRegionBusy() const
|
| -{
|
| - return elementAttributeValue(aria_busyAttr);
|
| -}
|
| -
|
| -//
|
| -// Accessibility Text.
|
| -//
|
| -
|
| -String AXRenderObject::textUnderElement() const
|
| -{
|
| - if (!m_renderer)
|
| - return String();
|
| -
|
| - if (m_renderer->isFileUploadControl())
|
| - return toRenderFileUploadControl(m_renderer)->buttonValue();
|
| -
|
| - if (m_renderer->isText())
|
| - return toRenderText(m_renderer)->plainText();
|
| -
|
| - return AXNodeObject::textUnderElement();
|
| -}
|
| -
|
| -//
|
| -// Accessibility Text - (To be deprecated).
|
| -//
|
| -
|
| -String AXRenderObject::helpText() const
|
| -{
|
| - if (!m_renderer)
|
| - return String();
|
| -
|
| - const AtomicString& ariaHelp = getAttribute(aria_helpAttr);
|
| - if (!ariaHelp.isEmpty())
|
| - return ariaHelp;
|
| -
|
| - String describedBy = ariaDescribedByAttribute();
|
| - if (!describedBy.isEmpty())
|
| - return describedBy;
|
| -
|
| - String description = accessibilityDescription();
|
| - for (RenderObject* curr = m_renderer; curr; curr = curr->parent()) {
|
| - if (curr->node() && curr->node()->isHTMLElement()) {
|
| - const AtomicString& summary = toElement(curr->node())->getAttribute(summaryAttr);
|
| - if (!summary.isEmpty())
|
| - return summary;
|
| -
|
| - // The title attribute should be used as help text unless it is already being used as descriptive text.
|
| - const AtomicString& title = toElement(curr->node())->getAttribute(titleAttr);
|
| - if (!title.isEmpty() && description != title)
|
| - return title;
|
| - }
|
| -
|
| - // Only take help text from an ancestor element if its a group or an unknown role. If help was
|
| - // added to those kinds of elements, it is likely it was meant for a child element.
|
| - AXObject* axObj = axObjectCache()->getOrCreate(curr);
|
| - if (axObj) {
|
| - AccessibilityRole role = axObj->roleValue();
|
| - if (role != GroupRole && role != UnknownRole)
|
| - break;
|
| - }
|
| - }
|
| -
|
| - return String();
|
| -}
|
| -
|
| -//
|
| -// Position and size.
|
| -//
|
| -
|
| -void AXRenderObject::checkCachedElementRect() const
|
| -{
|
| - if (m_cachedElementRectDirty)
|
| - return;
|
| -
|
| - if (!m_renderer)
|
| - return;
|
| -
|
| - if (!m_renderer->isBox())
|
| - return;
|
| -
|
| - bool dirty = false;
|
| - RenderBox* box = toRenderBox(m_renderer);
|
| - if (box->frameRect() != m_cachedFrameRect)
|
| - dirty = true;
|
| -
|
| - if (box->canBeScrolledAndHasScrollableArea()) {
|
| - ScrollableArea* scrollableArea = box->scrollableArea();
|
| - if (scrollableArea && scrollableArea->scrollPosition() != m_cachedScrollPosition)
|
| - dirty = true;
|
| - }
|
| -
|
| - if (dirty)
|
| - markCachedElementRectDirty();
|
| -}
|
| -
|
| -void AXRenderObject::updateCachedElementRect() const
|
| -{
|
| - if (!m_cachedElementRectDirty)
|
| - return;
|
| -
|
| - if (!m_renderer)
|
| - return;
|
| -
|
| - if (!m_renderer->isBox())
|
| - return;
|
| -
|
| - RenderBox* box = toRenderBox(m_renderer);
|
| - m_cachedFrameRect = box->frameRect();
|
| -
|
| - if (box->canBeScrolledAndHasScrollableArea()) {
|
| - ScrollableArea* scrollableArea = box->scrollableArea();
|
| - if (scrollableArea)
|
| - m_cachedScrollPosition = scrollableArea->scrollPosition();
|
| - }
|
| -
|
| - m_cachedElementRect = computeElementRect();
|
| - m_cachedElementRectDirty = false;
|
| -}
|
| -
|
| -void AXRenderObject::markCachedElementRectDirty() const
|
| -{
|
| - if (m_cachedElementRectDirty)
|
| - return;
|
| -
|
| - // Marks children recursively, if this element changed.
|
| - m_cachedElementRectDirty = true;
|
| - for (AXObject* child = firstChild(); child; child = child->nextSibling())
|
| - child->markCachedElementRectDirty();
|
| -}
|
| -
|
| -IntPoint AXRenderObject::clickPoint()
|
| -{
|
| - // Headings are usually much wider than their textual content. If the mid point is used, often it can be wrong.
|
| - if (isHeading() && children().size() == 1)
|
| - return children()[0]->clickPoint();
|
| -
|
| - // use the default position unless this is an editable web area, in which case we use the selection bounds.
|
| - if (!isWebArea() || isReadOnly())
|
| - return AXObject::clickPoint();
|
| -
|
| - IntRect bounds = pixelSnappedIntRect(elementRect());
|
| - return IntPoint(bounds.x() + (bounds.width() / 2), bounds.y() - (bounds.height() / 2));
|
| -}
|
| -
|
| -//
|
| -// Hit testing.
|
| -//
|
| -
|
| -AXObject* AXRenderObject::accessibilityHitTest(const IntPoint& point) const
|
| -{
|
| - if (!m_renderer || !m_renderer->hasLayer())
|
| - return 0;
|
| -
|
| - RenderLayer* layer = toRenderBox(m_renderer)->layer();
|
| -
|
| - HitTestRequest request(HitTestRequest::ReadOnly | HitTestRequest::Active);
|
| - HitTestResult hitTestResult = HitTestResult(point);
|
| - layer->hitTest(request, hitTestResult);
|
| - if (!hitTestResult.innerNode())
|
| - return 0;
|
| -
|
| - Node* node = hitTestResult.innerNode();
|
| -
|
| - // Allow the hit test to return media control buttons.
|
| - if (node->isInShadowTree() && (!isHTMLInputElement(*node) || !node->isMediaControlElement()))
|
| - node = node->shadowHost();
|
| -
|
| - if (isHTMLAreaElement(node))
|
| - return accessibilityImageMapHitTest(toHTMLAreaElement(node), point);
|
| -
|
| - if (isHTMLOptionElement(node))
|
| - node = toHTMLOptionElement(*node).ownerSelectElement();
|
| -
|
| - RenderObject* obj = node->renderer();
|
| - if (!obj)
|
| - return 0;
|
| -
|
| - AXObject* result = toAXObjectCacheImpl(obj->document().axObjectCache())->getOrCreate(obj);
|
| - result->updateChildrenIfNecessary();
|
| -
|
| - // Allow the element to perform any hit-testing it might need to do to reach non-render children.
|
| - result = result->elementAccessibilityHitTest(point);
|
| -
|
| - if (result && result->accessibilityIsIgnored()) {
|
| - // If this element is the label of a control, a hit test should return the control.
|
| - if (result->isAXRenderObject()) {
|
| - AXObject* controlObject = toAXRenderObject(result)->correspondingControlForLabelElement();
|
| - if (controlObject && !controlObject->exposesTitleUIElement())
|
| - return controlObject;
|
| - }
|
| -
|
| - result = result->parentObjectUnignored();
|
| - }
|
| -
|
| - return result;
|
| -}
|
| -
|
| -AXObject* AXRenderObject::elementAccessibilityHitTest(const IntPoint& point) const
|
| -{
|
| - if (isSVGImage())
|
| - return remoteSVGElementHitTest(point);
|
| -
|
| - return AXObject::elementAccessibilityHitTest(point);
|
| -}
|
| -
|
| -//
|
| -// High-level accessibility tree access.
|
| -//
|
| -
|
| -AXObject* AXRenderObject::computeParent() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - if (ariaRoleAttribute() == MenuBarRole)
|
| - return axObjectCache()->getOrCreate(m_renderer->parent());
|
| -
|
| - // menuButton and its corresponding menu are DOM siblings, but Accessibility needs them to be parent/child
|
| - if (ariaRoleAttribute() == MenuRole) {
|
| - AXObject* parent = menuButtonForMenu();
|
| - if (parent)
|
| - return parent;
|
| - }
|
| -
|
| - RenderObject* parentObj = renderParentObject();
|
| - if (parentObj)
|
| - return axObjectCache()->getOrCreate(parentObj);
|
| -
|
| - // WebArea's parent should be the scroll view containing it.
|
| - if (isWebArea())
|
| - return axObjectCache()->getOrCreate(m_renderer->frame()->view());
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -AXObject* AXRenderObject::computeParentIfExists() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - if (ariaRoleAttribute() == MenuBarRole)
|
| - return axObjectCache()->get(m_renderer->parent());
|
| -
|
| - // menuButton and its corresponding menu are DOM siblings, but Accessibility needs them to be parent/child
|
| - if (ariaRoleAttribute() == MenuRole) {
|
| - AXObject* parent = menuButtonForMenu();
|
| - if (parent)
|
| - return parent;
|
| - }
|
| -
|
| - RenderObject* parentObj = renderParentObject();
|
| - if (parentObj)
|
| - return axObjectCache()->get(parentObj);
|
| -
|
| - // WebArea's parent should be the scroll view containing it.
|
| - if (isWebArea())
|
| - return axObjectCache()->get(m_renderer->frame()->view());
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -//
|
| -// Low-level accessibility tree exploration, only for use within the accessibility module.
|
| -//
|
| -
|
| -AXObject* AXRenderObject::firstChild() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - RenderObject* firstChild = firstChildConsideringContinuation(m_renderer);
|
| -
|
| - if (!firstChild)
|
| - return 0;
|
| -
|
| - return axObjectCache()->getOrCreate(firstChild);
|
| -}
|
| -
|
| -AXObject* AXRenderObject::nextSibling() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - RenderObject* nextSibling = 0;
|
| -
|
| - RenderInline* inlineContinuation = m_renderer->isRenderBlock() ? toRenderBlock(m_renderer)->inlineElementContinuation() : 0;
|
| - if (inlineContinuation) {
|
| - // Case 1: node is a block and has an inline continuation. Next sibling is the inline continuation's first child.
|
| - nextSibling = firstChildConsideringContinuation(inlineContinuation);
|
| - } else if (m_renderer->isAnonymousBlock() && lastChildHasContinuation(m_renderer)) {
|
| - // Case 2: Anonymous block parent of the start of a continuation - skip all the way to
|
| - // after the parent of the end, since everything in between will be linked up via the continuation.
|
| - RenderObject* lastParent = endOfContinuations(toRenderBlock(m_renderer)->lastChild())->parent();
|
| - while (lastChildHasContinuation(lastParent))
|
| - lastParent = endOfContinuations(lastParent->slowLastChild())->parent();
|
| - nextSibling = lastParent->nextSibling();
|
| - } else if (RenderObject* ns = m_renderer->nextSibling()) {
|
| - // Case 3: node has an actual next sibling
|
| - nextSibling = ns;
|
| - } else if (isInlineWithContinuation(m_renderer)) {
|
| - // Case 4: node is an inline with a continuation. Next sibling is the next sibling of the end
|
| - // of the continuation chain.
|
| - nextSibling = endOfContinuations(m_renderer)->nextSibling();
|
| - } else if (isInlineWithContinuation(m_renderer->parent())) {
|
| - // Case 5: node has no next sibling, and its parent is an inline with a continuation.
|
| - RenderObject* continuation = toRenderInline(m_renderer->parent())->continuation();
|
| -
|
| - if (continuation->isRenderBlock()) {
|
| - // Case 5a: continuation is a block - in this case the block itself is the next sibling.
|
| - nextSibling = continuation;
|
| - } else {
|
| - // Case 5b: continuation is an inline - in this case the inline's first child is the next sibling.
|
| - nextSibling = firstChildConsideringContinuation(continuation);
|
| - }
|
| - }
|
| -
|
| - if (!nextSibling)
|
| - return 0;
|
| -
|
| - return axObjectCache()->getOrCreate(nextSibling);
|
| -}
|
| -
|
| -void AXRenderObject::addChildren()
|
| -{
|
| - // If the need to add more children in addition to existing children arises,
|
| - // childrenChanged should have been called, leaving the object with no children.
|
| - ASSERT(!m_haveChildren);
|
| -
|
| - m_haveChildren = true;
|
| -
|
| - if (!canHaveChildren())
|
| - return;
|
| -
|
| - for (RefPtr<AXObject> obj = firstChild(); obj; obj = obj->nextSibling())
|
| - addChild(obj.get());
|
| -
|
| - addHiddenChildren();
|
| - addAttachmentChildren();
|
| - addPopupChildren();
|
| - addImageMapChildren();
|
| - addTextFieldChildren();
|
| - addCanvasChildren();
|
| - addRemoteSVGChildren();
|
| - addInlineTextBoxChildren();
|
| -
|
| - for (unsigned i = 0; i < m_children.size(); ++i) {
|
| - if (!m_children[i].get()->cachedParentObject())
|
| - m_children[i].get()->setParent(this);
|
| - }
|
| -}
|
| -
|
| -bool AXRenderObject::canHaveChildren() const
|
| -{
|
| - if (!m_renderer)
|
| - return false;
|
| -
|
| - return AXNodeObject::canHaveChildren();
|
| -}
|
| -
|
| -void AXRenderObject::updateChildrenIfNecessary()
|
| -{
|
| - if (needsToUpdateChildren())
|
| - clearChildren();
|
| -
|
| - AXObject::updateChildrenIfNecessary();
|
| -}
|
| -
|
| -void AXRenderObject::clearChildren()
|
| -{
|
| - AXObject::clearChildren();
|
| - m_childrenDirty = false;
|
| -}
|
| -
|
| -AXObject* AXRenderObject::observableObject() const
|
| -{
|
| - // Find the object going up the parent chain that is used in accessibility to monitor certain notifications.
|
| - for (RenderObject* renderer = m_renderer; renderer && renderer->node(); renderer = renderer->parent()) {
|
| - if (renderObjectIsObservable(renderer))
|
| - return axObjectCache()->getOrCreate(renderer);
|
| - }
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -//
|
| -// Properties of the object's owning document or page.
|
| -//
|
| -
|
| -double AXRenderObject::estimatedLoadingProgress() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - if (isLoaded())
|
| - return 1.0;
|
| -
|
| - if (LocalFrame* frame = m_renderer->document().frame())
|
| - return frame->loader().progress().estimatedProgress();
|
| - return 0;
|
| -}
|
| -
|
| -//
|
| -// DOM and Render tree access.
|
| -//
|
| -
|
| -Node* AXRenderObject::node() const
|
| -{
|
| - return m_renderer ? m_renderer->node() : 0;
|
| -}
|
| -
|
| -Document* AXRenderObject::document() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| - return &m_renderer->document();
|
| -}
|
| -
|
| -FrameView* AXRenderObject::documentFrameView() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - // this is the RenderObject's Document's LocalFrame's FrameView
|
| - return m_renderer->document().view();
|
| -}
|
| -
|
| -Element* AXRenderObject::anchorElement() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - AXObjectCacheImpl* cache = axObjectCache();
|
| - RenderObject* currRenderer;
|
| -
|
| - // Search up the render tree for a RenderObject with a DOM node. Defer to an earlier continuation, though.
|
| - for (currRenderer = m_renderer; currRenderer && !currRenderer->node(); currRenderer = currRenderer->parent()) {
|
| - if (currRenderer->isAnonymousBlock()) {
|
| - RenderObject* continuation = toRenderBlock(currRenderer)->continuation();
|
| - if (continuation)
|
| - return cache->getOrCreate(continuation)->anchorElement();
|
| - }
|
| - }
|
| -
|
| - // bail if none found
|
| - if (!currRenderer)
|
| - return 0;
|
| -
|
| - // search up the DOM tree for an anchor element
|
| - // NOTE: this assumes that any non-image with an anchor is an HTMLAnchorElement
|
| - Node* node = currRenderer->node();
|
| - for ( ; node; node = node->parentNode()) {
|
| - if (isHTMLAnchorElement(*node) || (node->renderer() && cache->getOrCreate(node->renderer())->isAnchor()))
|
| - return toElement(node);
|
| - }
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -Widget* AXRenderObject::widgetForAttachmentView() const
|
| -{
|
| - if (!isAttachment())
|
| - return 0;
|
| - return toRenderPart(m_renderer)->widget();
|
| -}
|
| -
|
| -//
|
| -// Selected text.
|
| -//
|
| -
|
| -AXObject::PlainTextRange AXRenderObject::selectedTextRange() const
|
| -{
|
| - if (!isTextControl())
|
| - return PlainTextRange();
|
| -
|
| - if (isPasswordFieldAndShouldHideValue())
|
| - return PlainTextRange();
|
| -
|
| - AccessibilityRole ariaRole = ariaRoleAttribute();
|
| - if (isNativeTextControl() && ariaRole == UnknownRole && m_renderer->isTextControl()) {
|
| - HTMLTextFormControlElement* textControl = toRenderTextControl(m_renderer)->textFormControlElement();
|
| - return PlainTextRange(textControl->selectionStart(), textControl->selectionEnd() - textControl->selectionStart());
|
| - }
|
| -
|
| - if (ariaRole == UnknownRole)
|
| - return PlainTextRange();
|
| -
|
| - return ariaSelectedTextRange();
|
| -}
|
| -
|
| -VisibleSelection AXRenderObject::selection() const
|
| -{
|
| - return m_renderer->frame()->selection().selection();
|
| -}
|
| -
|
| -//
|
| -// Modify or take an action on an object.
|
| -//
|
| -
|
| -void AXRenderObject::setSelectedTextRange(const PlainTextRange& range)
|
| -{
|
| - if (isNativeTextControl() && m_renderer->isTextControl()) {
|
| - HTMLTextFormControlElement* textControl = toRenderTextControl(m_renderer)->textFormControlElement();
|
| - textControl->setSelectionRange(range.start, range.start + range.length);
|
| - return;
|
| - }
|
| -
|
| - Document& document = m_renderer->document();
|
| - LocalFrame* frame = document.frame();
|
| - if (!frame)
|
| - return;
|
| - Node* node = m_renderer->node();
|
| - frame->selection().setSelection(VisibleSelection(Position(node, range.start, Position::PositionIsOffsetInAnchor),
|
| - Position(node, range.start + range.length, Position::PositionIsOffsetInAnchor), DOWNSTREAM));
|
| -}
|
| -
|
| -void AXRenderObject::setValue(const String& string)
|
| -{
|
| - if (!node() || !node()->isElementNode())
|
| - return;
|
| - if (!m_renderer || !m_renderer->isBoxModelObject())
|
| - return;
|
| -
|
| - RenderBoxModelObject* renderer = toRenderBoxModelObject(m_renderer);
|
| - if (renderer->isTextField() && isHTMLInputElement(*node()))
|
| - toHTMLInputElement(*node()).setValue(string);
|
| - else if (renderer->isTextArea() && isHTMLTextAreaElement(*node()))
|
| - toHTMLTextAreaElement(*node()).setValue(string);
|
| -}
|
| -
|
| -// FIXME: This function should use an IntSize to avoid the conversion below.
|
| -void AXRenderObject::scrollTo(const IntPoint& point) const
|
| -{
|
| - if (!m_renderer || !m_renderer->isBox())
|
| - return;
|
| -
|
| - RenderBox* box = toRenderBox(m_renderer);
|
| - if (!box->canBeScrolledAndHasScrollableArea())
|
| - return;
|
| -
|
| - box->scrollToOffset(IntSize(point.x(), point.y()));
|
| -}
|
| -
|
| -//
|
| -// Notifications that this object may have changed.
|
| -//
|
| -
|
| -void AXRenderObject::handleActiveDescendantChanged()
|
| -{
|
| - Element* element = toElement(renderer()->node());
|
| - if (!element)
|
| - return;
|
| - Document& doc = renderer()->document();
|
| - if (!doc.frame()->selection().isFocusedAndActive() || doc.focusedElement() != element)
|
| - return;
|
| - AXRenderObject* activedescendant = toAXRenderObject(activeDescendant());
|
| -
|
| - if (activedescendant && shouldNotifyActiveDescendant())
|
| - toAXObjectCacheImpl(doc.axObjectCache())->postNotification(m_renderer, AXObjectCacheImpl::AXActiveDescendantChanged, true);
|
| -}
|
| -
|
| -void AXRenderObject::handleAriaExpandedChanged()
|
| -{
|
| - // Find if a parent of this object should handle aria-expanded changes.
|
| - AXObject* containerParent = this->parentObject();
|
| - while (containerParent) {
|
| - bool foundParent = false;
|
| -
|
| - switch (containerParent->roleValue()) {
|
| - case TreeRole:
|
| - case TreeGridRole:
|
| - case GridRole:
|
| - case TableRole:
|
| - case BrowserRole:
|
| - foundParent = true;
|
| - break;
|
| - default:
|
| - break;
|
| - }
|
| -
|
| - if (foundParent)
|
| - break;
|
| -
|
| - containerParent = containerParent->parentObject();
|
| - }
|
| -
|
| - // Post that the row count changed.
|
| - if (containerParent)
|
| - axObjectCache()->postNotification(containerParent, document(), AXObjectCacheImpl::AXRowCountChanged, true);
|
| -
|
| - // Post that the specific row either collapsed or expanded.
|
| - AccessibilityExpanded expanded = isExpanded();
|
| - if (!expanded)
|
| - return;
|
| -
|
| - if (roleValue() == RowRole || roleValue() == TreeItemRole) {
|
| - AXObjectCacheImpl::AXNotification notification = AXObjectCacheImpl::AXRowExpanded;
|
| - if (expanded == ExpandedCollapsed)
|
| - notification = AXObjectCacheImpl::AXRowCollapsed;
|
| -
|
| - axObjectCache()->postNotification(this, document(), notification, true);
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::textChanged()
|
| -{
|
| - if (!m_renderer)
|
| - return;
|
| -
|
| - Settings* settings = document()->settings();
|
| - if (settings && settings->inlineTextBoxAccessibilityEnabled() && roleValue() == StaticTextRole)
|
| - childrenChanged();
|
| -
|
| - // Do this last - AXNodeObject::textChanged posts live region announcements,
|
| - // and we should update the inline text boxes first.
|
| - AXNodeObject::textChanged();
|
| -}
|
| -
|
| -//
|
| -// Text metrics. Most of these should be deprecated, needs major cleanup.
|
| -//
|
| -
|
| -// NOTE: Consider providing this utility method as AX API
|
| -int AXRenderObject::index(const VisiblePosition& position) const
|
| -{
|
| - if (position.isNull() || !isTextControl())
|
| - return -1;
|
| -
|
| - if (renderObjectContainsPosition(m_renderer, position.deepEquivalent()))
|
| - return indexForVisiblePosition(position);
|
| -
|
| - return -1;
|
| -}
|
| -
|
| -VisiblePosition AXRenderObject::visiblePositionForIndex(int index) const
|
| -{
|
| - if (!m_renderer)
|
| - return VisiblePosition();
|
| -
|
| - if (isNativeTextControl() && m_renderer->isTextControl())
|
| - return toRenderTextControl(m_renderer)->textFormControlElement()->visiblePositionForIndex(index);
|
| -
|
| - if (!allowsTextRanges() && !m_renderer->isText())
|
| - return VisiblePosition();
|
| -
|
| - Node* node = m_renderer->node();
|
| - if (!node)
|
| - return VisiblePosition();
|
| -
|
| - if (index <= 0)
|
| - return VisiblePosition(firstPositionInOrBeforeNode(node), DOWNSTREAM);
|
| -
|
| - Position start, end;
|
| - bool selected = Range::selectNodeContents(node, start, end);
|
| - if (!selected)
|
| - return VisiblePosition();
|
| -
|
| - CharacterIterator it(start, end);
|
| - it.advance(index - 1);
|
| - return VisiblePosition(Position(it.endContainer(), it.endOffset(), Position::PositionIsOffsetInAnchor), UPSTREAM);
|
| -}
|
| -
|
| -int AXRenderObject::indexForVisiblePosition(const VisiblePosition& pos) const
|
| -{
|
| - if (isNativeTextControl() && m_renderer->isTextControl()) {
|
| - HTMLTextFormControlElement* textControl = toRenderTextControl(m_renderer)->textFormControlElement();
|
| - return textControl->indexForVisiblePosition(pos);
|
| - }
|
| -
|
| - if (!isTextControl())
|
| - return 0;
|
| -
|
| - Node* node = m_renderer->node();
|
| - if (!node)
|
| - return 0;
|
| -
|
| - Position indexPosition = pos.deepEquivalent();
|
| - if (indexPosition.isNull() || highestEditableRoot(indexPosition, HasEditableAXRole) != node)
|
| - return 0;
|
| -
|
| - RefPtrWillBeRawPtr<Range> range = Range::create(m_renderer->document());
|
| - range->setStart(node, 0, IGNORE_EXCEPTION);
|
| - range->setEnd(indexPosition, IGNORE_EXCEPTION);
|
| -
|
| - return TextIterator::rangeLength(range.get());
|
| -}
|
| -
|
| -void AXRenderObject::addInlineTextBoxChildren()
|
| -{
|
| - Settings* settings = document()->settings();
|
| - if (!settings || !settings->inlineTextBoxAccessibilityEnabled())
|
| - return;
|
| -
|
| - if (!renderer() || !renderer()->isText())
|
| - return;
|
| -
|
| - if (renderer()->needsLayout()) {
|
| - // If a RenderText needs layout, its inline text boxes are either
|
| - // nonexistent or invalid, so defer until the layout happens and
|
| - // the renderer calls AXObjectCacheImpl::inlineTextBoxesUpdated.
|
| - return;
|
| - }
|
| -
|
| - RenderText* renderText = toRenderText(renderer());
|
| - for (RefPtr<AbstractInlineTextBox> box = renderText->firstAbstractInlineTextBox(); box.get(); box = box->nextInlineTextBox()) {
|
| - AXObject* axObject = axObjectCache()->getOrCreate(box.get());
|
| - if (!axObject->accessibilityIsIgnored())
|
| - m_children.append(axObject);
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::lineBreaks(Vector<int>& lineBreaks) const
|
| -{
|
| - if (!isTextControl())
|
| - return;
|
| -
|
| - VisiblePosition visiblePos = visiblePositionForIndex(0);
|
| - VisiblePosition savedVisiblePos = visiblePos;
|
| - visiblePos = nextLinePosition(visiblePos, 0);
|
| - while (!visiblePos.isNull() && visiblePos != savedVisiblePos) {
|
| - lineBreaks.append(indexForVisiblePosition(visiblePos));
|
| - savedVisiblePos = visiblePos;
|
| - visiblePos = nextLinePosition(visiblePos, 0);
|
| - }
|
| -}
|
| -
|
| -//
|
| -// Private.
|
| -//
|
| -
|
| -bool AXRenderObject::isAllowedChildOfTree() const
|
| -{
|
| - // Determine if this is in a tree. If so, we apply special behavior to make it work like an AXOutline.
|
| - AXObject* axObj = parentObject();
|
| - bool isInTree = false;
|
| - while (axObj) {
|
| - if (axObj->isTree()) {
|
| - isInTree = true;
|
| - break;
|
| - }
|
| - axObj = axObj->parentObject();
|
| - }
|
| -
|
| - // If the object is in a tree, only tree items should be exposed (and the children of tree items).
|
| - if (isInTree) {
|
| - AccessibilityRole role = roleValue();
|
| - if (role != TreeItemRole && role != StaticTextRole)
|
| - return false;
|
| - }
|
| - return true;
|
| -}
|
| -
|
| -void AXRenderObject::ariaListboxSelectedChildren(AccessibilityChildrenVector& result)
|
| -{
|
| - bool isMulti = isMultiSelectable();
|
| -
|
| - AccessibilityChildrenVector childObjects = children();
|
| - unsigned childrenSize = childObjects.size();
|
| - for (unsigned k = 0; k < childrenSize; ++k) {
|
| - // Every child should have aria-role option, and if so, check for selected attribute/state.
|
| - AXObject* child = childObjects[k].get();
|
| - if (child->isSelected() && child->ariaRoleAttribute() == ListBoxOptionRole) {
|
| - result.append(child);
|
| - if (!isMulti)
|
| - return;
|
| - }
|
| - }
|
| -}
|
| -
|
| -AXObject::PlainTextRange AXRenderObject::ariaSelectedTextRange() const
|
| -{
|
| - Node* node = m_renderer->node();
|
| - if (!node)
|
| - return PlainTextRange();
|
| -
|
| - VisibleSelection visibleSelection = selection();
|
| - RefPtrWillBeRawPtr<Range> currentSelectionRange = visibleSelection.toNormalizedRange();
|
| - if (!currentSelectionRange || !currentSelectionRange->intersectsNode(node, IGNORE_EXCEPTION))
|
| - return PlainTextRange();
|
| -
|
| - int start = indexForVisiblePosition(visibleSelection.visibleStart());
|
| - int end = indexForVisiblePosition(visibleSelection.visibleEnd());
|
| -
|
| - return PlainTextRange(start, end - start);
|
| -}
|
| -
|
| -bool AXRenderObject::nodeIsTextControl(const Node* node) const
|
| -{
|
| - if (!node)
|
| - return false;
|
| -
|
| - const AXObject* axObjectForNode = axObjectCache()->getOrCreate(const_cast<Node*>(node));
|
| - if (!axObjectForNode)
|
| - return false;
|
| -
|
| - return axObjectForNode->isTextControl();
|
| -}
|
| -
|
| -bool AXRenderObject::isTabItemSelected() const
|
| -{
|
| - if (!isTabItem() || !m_renderer)
|
| - return false;
|
| -
|
| - Node* node = m_renderer->node();
|
| - if (!node || !node->isElementNode())
|
| - return false;
|
| -
|
| - // The ARIA spec says a tab item can also be selected if it is aria-labeled by a tabpanel
|
| - // that has keyboard focus inside of it, or if a tabpanel in its aria-controls list has KB
|
| - // focus inside of it.
|
| - AXObject* focusedElement = focusedUIElement();
|
| - if (!focusedElement)
|
| - return false;
|
| -
|
| - WillBeHeapVector<RawPtrWillBeMember<Element> > elements;
|
| - elementsFromAttribute(elements, aria_controlsAttr);
|
| -
|
| - unsigned count = elements.size();
|
| - for (unsigned k = 0; k < count; ++k) {
|
| - Element* element = elements[k];
|
| - AXObject* tabPanel = axObjectCache()->getOrCreate(element);
|
| -
|
| - // A tab item should only control tab panels.
|
| - if (!tabPanel || tabPanel->roleValue() != TabPanelRole)
|
| - continue;
|
| -
|
| - AXObject* checkFocusElement = focusedElement;
|
| - // Check if the focused element is a descendant of the element controlled by the tab item.
|
| - while (checkFocusElement) {
|
| - if (tabPanel == checkFocusElement)
|
| - return true;
|
| - checkFocusElement = checkFocusElement->parentObject();
|
| - }
|
| - }
|
| -
|
| - return false;
|
| -}
|
| -
|
| -AXObject* AXRenderObject::accessibilityImageMapHitTest(HTMLAreaElement* area, const IntPoint& point) const
|
| -{
|
| - if (!area)
|
| - return 0;
|
| -
|
| - AXObject* parent = axObjectCache()->getOrCreate(area->imageElement());
|
| - if (!parent)
|
| - return 0;
|
| -
|
| - AXObject::AccessibilityChildrenVector children = parent->children();
|
| - unsigned count = children.size();
|
| - for (unsigned k = 0; k < count; ++k) {
|
| - if (children[k]->elementRect().contains(point))
|
| - return children[k].get();
|
| - }
|
| -
|
| - return 0;
|
| -}
|
| -
|
| -bool AXRenderObject::renderObjectIsObservable(RenderObject* renderer) const
|
| -{
|
| - // AX clients will listen for AXValueChange on a text control.
|
| - if (renderer->isTextControl())
|
| - return true;
|
| -
|
| - // AX clients will listen for AXSelectedChildrenChanged on listboxes.
|
| - Node* node = renderer->node();
|
| - if (nodeHasRole(node, "listbox") || (renderer->isBoxModelObject() && toRenderBoxModelObject(renderer)->isListBox()))
|
| - return true;
|
| -
|
| - // Textboxes should send out notifications.
|
| - if (nodeHasRole(node, "textbox"))
|
| - return true;
|
| -
|
| - return false;
|
| -}
|
| -
|
| -RenderObject* AXRenderObject::renderParentObject() const
|
| -{
|
| - if (!m_renderer)
|
| - return 0;
|
| -
|
| - RenderObject* startOfConts = m_renderer->isRenderBlock() ? startOfContinuations(m_renderer) : 0;
|
| - if (startOfConts) {
|
| - // Case 1: node is a block and is an inline's continuation. Parent
|
| - // is the start of the continuation chain.
|
| - return startOfConts;
|
| - }
|
| -
|
| - RenderObject* parent = m_renderer->parent();
|
| - startOfConts = parent && parent->isRenderInline() ? startOfContinuations(parent) : 0;
|
| - if (startOfConts) {
|
| - // Case 2: node's parent is an inline which is some node's continuation; parent is
|
| - // the earliest node in the continuation chain.
|
| - return startOfConts;
|
| - }
|
| -
|
| - RenderObject* firstChild = parent ? parent->slowFirstChild() : 0;
|
| - if (firstChild && firstChild->node()) {
|
| - // Case 3: The first sibling is the beginning of a continuation chain. Find the origin of that continuation.
|
| - // Get the node's renderer and follow that continuation chain until the first child is found.
|
| - for (RenderObject* nodeRenderFirstChild = firstChild->node()->renderer(); nodeRenderFirstChild != firstChild; nodeRenderFirstChild = firstChild->node()->renderer()) {
|
| - for (RenderObject* contsTest = nodeRenderFirstChild; contsTest; contsTest = nextContinuation(contsTest)) {
|
| - if (contsTest == firstChild) {
|
| - parent = nodeRenderFirstChild->parent();
|
| - break;
|
| - }
|
| - }
|
| - RenderObject* newFirstChild = parent->slowFirstChild();
|
| - if (firstChild == newFirstChild)
|
| - break;
|
| - firstChild = newFirstChild;
|
| - if (!firstChild->node())
|
| - break;
|
| - }
|
| - }
|
| -
|
| - return parent;
|
| -}
|
| -
|
| -bool AXRenderObject::isDescendantOfElementType(const HTMLQualifiedName& tagName) const
|
| -{
|
| - for (RenderObject* parent = m_renderer->parent(); parent; parent = parent->parent()) {
|
| - if (parent->node() && parent->node()->hasTagName(tagName))
|
| - return true;
|
| - }
|
| - return false;
|
| -}
|
| -
|
| -bool AXRenderObject::isSVGImage() const
|
| -{
|
| - return remoteSVGRootElement();
|
| -}
|
| -
|
| -void AXRenderObject::detachRemoteSVGRoot()
|
| -{
|
| - if (AXSVGRoot* root = remoteSVGRootElement())
|
| - root->setParent(0);
|
| -}
|
| -
|
| -AXSVGRoot* AXRenderObject::remoteSVGRootElement() const
|
| -{
|
| - if (!m_renderer || !m_renderer->isRenderImage())
|
| - return 0;
|
| -
|
| - ImageResource* cachedImage = toRenderImage(m_renderer)->cachedImage();
|
| - if (!cachedImage)
|
| - return 0;
|
| -
|
| - Image* image = cachedImage->image();
|
| - if (!image || !image->isSVGImage())
|
| - return 0;
|
| -
|
| - FrameView* frameView = toSVGImage(image)->frameView();
|
| - if (!frameView)
|
| - return 0;
|
| - Document* doc = frameView->frame().document();
|
| - if (!doc || !doc->isSVGDocument())
|
| - return 0;
|
| -
|
| - Settings* settings = doc->settings();
|
| - if (settings && !settings->accessibilityEnabled())
|
| - settings->setAccessibilityEnabled(true);
|
| -
|
| - SVGSVGElement* rootElement = doc->accessSVGExtensions().rootElement();
|
| - if (!rootElement)
|
| - return 0;
|
| - RenderObject* rendererRoot = rootElement->renderer();
|
| - if (!rendererRoot)
|
| - return 0;
|
| -
|
| - AXObject* rootSVGObject = toAXObjectCacheImpl(doc->axObjectCache())->getOrCreate(rendererRoot);
|
| -
|
| - // In order to connect the AX hierarchy from the SVG root element from the loaded resource
|
| - // the parent must be set, because there's no other way to get back to who created the image.
|
| - ASSERT(rootSVGObject && rootSVGObject->isAXSVGRoot());
|
| - if (!rootSVGObject->isAXSVGRoot())
|
| - return 0;
|
| -
|
| - return toAXSVGRoot(rootSVGObject);
|
| -}
|
| -
|
| -AXObject* AXRenderObject::remoteSVGElementHitTest(const IntPoint& point) const
|
| -{
|
| - AXObject* remote = remoteSVGRootElement();
|
| - if (!remote)
|
| - return 0;
|
| -
|
| - IntSize offset = point - roundedIntPoint(elementRect().location());
|
| - return remote->accessibilityHitTest(IntPoint(offset));
|
| -}
|
| -
|
| -// The boundingBox for elements within the remote SVG element needs to be offset by its position
|
| -// within the parent page, otherwise they are in relative coordinates only.
|
| -void AXRenderObject::offsetBoundingBoxForRemoteSVGElement(LayoutRect& rect) const
|
| -{
|
| - for (AXObject* parent = parentObject(); parent; parent = parent->parentObject()) {
|
| - if (parent->isAXSVGRoot()) {
|
| - rect.moveBy(parent->parentObject()->elementRect().location());
|
| - break;
|
| - }
|
| - }
|
| -}
|
| -
|
| -// Hidden children are those that are not rendered or visible, but are specifically marked as aria-hidden=false,
|
| -// meaning that they should be exposed to the AX hierarchy.
|
| -void AXRenderObject::addHiddenChildren()
|
| -{
|
| - Node* node = this->node();
|
| - if (!node)
|
| - return;
|
| -
|
| - // First do a quick run through to determine if we have any hidden nodes (most often we will not).
|
| - // If we do have hidden nodes, we need to determine where to insert them so they match DOM order as close as possible.
|
| - bool shouldInsertHiddenNodes = false;
|
| - for (Node* child = node->firstChild(); child; child = child->nextSibling()) {
|
| - if (!child->renderer() && isNodeAriaVisible(child)) {
|
| - shouldInsertHiddenNodes = true;
|
| - break;
|
| - }
|
| - }
|
| -
|
| - if (!shouldInsertHiddenNodes)
|
| - return;
|
| -
|
| - // Iterate through all of the children, including those that may have already been added, and
|
| - // try to insert hidden nodes in the correct place in the DOM order.
|
| - unsigned insertionIndex = 0;
|
| - for (Node* child = node->firstChild(); child; child = child->nextSibling()) {
|
| - if (child->renderer()) {
|
| - // Find out where the last render sibling is located within m_children.
|
| - AXObject* childObject = axObjectCache()->get(child->renderer());
|
| - if (childObject && childObject->accessibilityIsIgnored()) {
|
| - AccessibilityChildrenVector children = childObject->children();
|
| - if (children.size())
|
| - childObject = children.last().get();
|
| - else
|
| - childObject = 0;
|
| - }
|
| -
|
| - if (childObject)
|
| - insertionIndex = m_children.find(childObject) + 1;
|
| - continue;
|
| - }
|
| -
|
| - if (!isNodeAriaVisible(child))
|
| - continue;
|
| -
|
| - unsigned previousSize = m_children.size();
|
| - if (insertionIndex > previousSize)
|
| - insertionIndex = previousSize;
|
| -
|
| - insertChild(axObjectCache()->getOrCreate(child), insertionIndex);
|
| - insertionIndex += (m_children.size() - previousSize);
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::addTextFieldChildren()
|
| -{
|
| - Node* node = this->node();
|
| - if (!isHTMLInputElement(node))
|
| - return;
|
| -
|
| - HTMLInputElement& input = toHTMLInputElement(*node);
|
| - Element* spinButtonElement = input.userAgentShadowRoot()->getElementById(ShadowElementNames::spinButton());
|
| - if (!spinButtonElement || !spinButtonElement->isSpinButtonElement())
|
| - return;
|
| -
|
| - AXSpinButton* axSpinButton = toAXSpinButton(axObjectCache()->getOrCreate(SpinButtonRole));
|
| - axSpinButton->setSpinButtonElement(toSpinButtonElement(spinButtonElement));
|
| - axSpinButton->setParent(this);
|
| - m_children.append(axSpinButton);
|
| -}
|
| -
|
| -void AXRenderObject::addImageMapChildren()
|
| -{
|
| - RenderBoxModelObject* cssBox = renderBoxModelObject();
|
| - if (!cssBox || !cssBox->isRenderImage())
|
| - return;
|
| -
|
| - HTMLMapElement* map = toRenderImage(cssBox)->imageMap();
|
| - if (!map)
|
| - return;
|
| -
|
| - for (HTMLAreaElement& area : Traversal<HTMLAreaElement>::descendantsOf(*map)) {
|
| - // add an <area> element for this child if it has a link
|
| - if (area.isLink()) {
|
| - AXImageMapLink* areaObject = toAXImageMapLink(axObjectCache()->getOrCreate(ImageMapLinkRole));
|
| - areaObject->setHTMLAreaElement(&area);
|
| - areaObject->setHTMLMapElement(map);
|
| - areaObject->setParent(this);
|
| - if (!areaObject->accessibilityIsIgnored())
|
| - m_children.append(areaObject);
|
| - else
|
| - axObjectCache()->remove(areaObject->axObjectID());
|
| - }
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::addCanvasChildren()
|
| -{
|
| - if (!isHTMLCanvasElement(node()))
|
| - return;
|
| -
|
| - // If it's a canvas, it won't have rendered children, but it might have accessible fallback content.
|
| - // Clear m_haveChildren because AXNodeObject::addChildren will expect it to be false.
|
| - ASSERT(!m_children.size());
|
| - m_haveChildren = false;
|
| - AXNodeObject::addChildren();
|
| -}
|
| -
|
| -void AXRenderObject::addAttachmentChildren()
|
| -{
|
| - if (!isAttachment())
|
| - return;
|
| -
|
| - // FrameView's need to be inserted into the AX hierarchy when encountered.
|
| - Widget* widget = widgetForAttachmentView();
|
| - if (!widget || !widget->isFrameView())
|
| - return;
|
| -
|
| - AXObject* axWidget = axObjectCache()->getOrCreate(widget);
|
| - if (!axWidget->accessibilityIsIgnored())
|
| - m_children.append(axWidget);
|
| -}
|
| -
|
| -void AXRenderObject::addPopupChildren()
|
| -{
|
| - if (!isHTMLInputElement(node()))
|
| - return;
|
| - if (AXObject* axPopup = toHTMLInputElement(node())->popupRootAXObject())
|
| - m_children.append(axPopup);
|
| -}
|
| -
|
| -void AXRenderObject::addRemoteSVGChildren()
|
| -{
|
| - AXSVGRoot* root = remoteSVGRootElement();
|
| - if (!root)
|
| - return;
|
| -
|
| - root->setParent(this);
|
| -
|
| - if (root->accessibilityIsIgnored()) {
|
| - AccessibilityChildrenVector children = root->children();
|
| - unsigned length = children.size();
|
| - for (unsigned i = 0; i < length; ++i)
|
| - m_children.append(children[i]);
|
| - } else {
|
| - m_children.append(root);
|
| - }
|
| -}
|
| -
|
| -void AXRenderObject::ariaSelectedRows(AccessibilityChildrenVector& result)
|
| -{
|
| - // Get all the rows.
|
| - AccessibilityChildrenVector allRows;
|
| - if (isTree())
|
| - ariaTreeRows(allRows);
|
| - else if (isAXTable() && toAXTable(this)->supportsSelectedRows())
|
| - allRows = toAXTable(this)->rows();
|
| -
|
| - // Determine which rows are selected.
|
| - bool isMulti = isMultiSelectable();
|
| -
|
| - // Prefer active descendant over aria-selected.
|
| - AXObject* activeDesc = activeDescendant();
|
| - if (activeDesc && (activeDesc->isTreeItem() || activeDesc->isTableRow())) {
|
| - result.append(activeDesc);
|
| - if (!isMulti)
|
| - return;
|
| - }
|
| -
|
| - unsigned count = allRows.size();
|
| - for (unsigned k = 0; k < count; ++k) {
|
| - if (allRows[k]->isSelected()) {
|
| - result.append(allRows[k]);
|
| - if (!isMulti)
|
| - break;
|
| - }
|
| - }
|
| -}
|
| -
|
| -bool AXRenderObject::elementAttributeValue(const QualifiedName& attributeName) const
|
| -{
|
| - if (!m_renderer)
|
| - return false;
|
| -
|
| - return equalIgnoringCase(getAttribute(attributeName), "true");
|
| -}
|
| -
|
| -bool AXRenderObject::inheritsPresentationalRole() const
|
| -{
|
| - // ARIA states if an item can get focus, it should not be presentational.
|
| - if (canSetFocusAttribute())
|
| - return false;
|
| -
|
| - // ARIA spec says that when a parent object is presentational, and it has required child elements,
|
| - // those child elements are also presentational. For example, <li> becomes presentational from <ul>.
|
| - // http://www.w3.org/WAI/PF/aria/complete#presentation
|
| - if (roleValue() != ListItemRole && roleValue() != ListMarkerRole)
|
| - return false;
|
| -
|
| - AXObject* parent = parentObject();
|
| - if (!parent->isAXRenderObject())
|
| - return false;
|
| -
|
| - Node* elementNode = toAXRenderObject(parent)->node();
|
| - if (!elementNode || !elementNode->isElementNode())
|
| - return false;
|
| -
|
| - QualifiedName tagName = toElement(elementNode)->tagQName();
|
| - if (tagName == ulTag || tagName == olTag || tagName == dlTag)
|
| - return (parent->roleValue() == NoneRole || parent->roleValue() == PresentationalRole);
|
| -
|
| - return false;
|
| -}
|
| -
|
| -LayoutRect AXRenderObject::computeElementRect() const
|
| -{
|
| - RenderObject* obj = m_renderer;
|
| -
|
| - if (!obj)
|
| - return LayoutRect();
|
| -
|
| - if (obj->node()) // If we are a continuation, we want to make sure to use the primary renderer.
|
| - obj = obj->node()->renderer();
|
| -
|
| - // absoluteFocusRingBoundingBox will query the hierarchy below this element, which for large webpages can be very slow.
|
| - // For a web area, which will have the most elements of any element, absoluteQuads should be used.
|
| - // We should also use absoluteQuads for SVG elements, otherwise transforms won't be applied.
|
| -
|
| - LayoutRect result;
|
| - if (obj->isText()) {
|
| - Vector<FloatQuad> quads;
|
| - toRenderText(obj)->absoluteQuads(quads, 0, RenderText::ClipToEllipsis);
|
| - result = boundingBoxForQuads(obj, quads);
|
| - } else if (isWebArea() || obj->isSVGRoot()) {
|
| - result = obj->absoluteBoundingBoxRect();
|
| - } else {
|
| - result = obj->absoluteFocusRingBoundingBoxRect();
|
| - }
|
| -
|
| - Document* document = this->document();
|
| - if (document && document->isSVGDocument())
|
| - offsetBoundingBoxForRemoteSVGElement(result);
|
| - if (document && document->frame() && document->frame()->pagePopupOwner()) {
|
| - IntPoint popupOrigin = document->view()->contentsToScreen(IntRect()).location();
|
| - IntPoint mainOrigin = axObjectCache()->rootObject()->documentFrameView()->contentsToScreen(IntRect()).location();
|
| - result.moveBy(IntPoint(popupOrigin - mainOrigin));
|
| - }
|
| -
|
| - // The size of the web area should be the content size, not the clipped size.
|
| - if (isWebArea() && obj->frame()->view())
|
| - result.setSize(obj->frame()->view()->contentsSize());
|
| -
|
| - // Checkboxes and radio buttons include their label as part of their rect.
|
| - if (isCheckboxOrRadio()) {
|
| - HTMLLabelElement* label = labelForElement(toElement(m_renderer->node()));
|
| - if (label && label->renderer()) {
|
| - LayoutRect labelRect = axObjectCache()->getOrCreate(label)->elementRect();
|
| - result.unite(labelRect);
|
| - }
|
| - }
|
| -
|
| - return result;
|
| -}
|
| -
|
| -} // namespace blink
|
|
|
Chromium Code Reviews
Issue 713933002:
Create Source/modules/accessibility/ and move most of core/accessibility/* into it (Closed)
Base URL: https://chromium.googlesource.com/chromium/blink.git@master