void AccessibilityARIAGrid::addChildren()
{
    ASSERT(!m_haveChildren); 
    
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    m_haveChildren = true;
    if (!m_renderer)
        return;
    
    AXObjectCache* axCache = m_renderer->document().axObjectCache();
    
    // add only rows that are labeled as aria rows
    HashSet<AccessibilityObject*> appendedRows;
    unsigned columnCount = 0;
    for (RefPtr<AccessibilityObject> child = firstChild(); child; child = child->nextSibling())
        addRowDescendant(child.get(), appendedRows, columnCount);
    
    // make the columns based on the number of columns in the first body
    for (unsigned i = 0; i < columnCount; ++i) {
        AccessibilityTableColumn* column = toAccessibilityTableColumn(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
Esempio n. 2
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AccessibilityRole AccessibilityNodeObject::remapAriaRoleDueToParent(AccessibilityRole role) const
{
    // Some objects change their role based on their parent.
    // However, asking for the unignoredParent calls accessibilityIsIgnored(), which can trigger a loop. 
    // While inside the call stack of creating an element, we need to avoid accessibilityIsIgnored().
    // https://bugs.webkit.org/show_bug.cgi?id=65174

    if (role != ListBoxOptionRole && role != MenuItemRole)
        return role;
    
    for (AccessibilityObject* parent = parentObject(); parent && !parent->accessibilityIsIgnored(); parent = parent->parentObject()) {
        AccessibilityRole parentAriaRole = parent->ariaRoleAttribute();

        // Selects and listboxes both have options as child roles, but they map to different roles within WebCore.
        if (role == ListBoxOptionRole && parentAriaRole == MenuRole)
            return MenuItemRole;
        // An aria "menuitem" may map to MenuButton or MenuItem depending on its parent.
        if (role == MenuItemRole && parentAriaRole == GroupRole)
            return MenuButtonRole;
        
        // If the parent had a different role, then we don't need to continue searching up the chain.
        if (parentAriaRole)
            break;
    }
    
    return role;
}   
AccessibilityObject* AccessibilityListBox::elementAccessibilityHitTest(const LayoutPoint& point) const
{
    // the internal HTMLSelectElement methods for returning a listbox option at a point
    // ignore optgroup elements.
    if (!m_renderer)
        return 0;
    
    Node* node = m_renderer->node();
    if (!node)
        return 0;
    
    LayoutRect parentRect = boundingBoxRect();
    
    AccessibilityObject* listBoxOption = 0;
    unsigned length = m_children.size();
    for (unsigned i = 0; i < length; i++) {
        LayoutRect rect = toRenderListBox(m_renderer)->itemBoundingBoxRect(parentRect.location(), i);
        // The cast to HTMLElement below is safe because the only other possible listItem type
        // would be a WMLElement, but WML builds don't use accessibility features at all.
        if (rect.contains(point)) {
            listBoxOption = m_children[i].get();
            break;
        }
    }
    
    if (listBoxOption && !listBoxOption->accessibilityIsIgnored())
        return listBoxOption;
    
    return axObjectCache()->getOrCreate(m_renderer);
}
static gint webkitAccessibleTextGetCaretOffset(AtkText* text)
{
    // coreObject is the unignored object whose offset the caller is requesting.
    // focusedObject is the object with the caret. It is likely ignored -- unless it's a link.
    AccessibilityObject* coreObject = core(text);
    if (!coreObject->isAccessibilityRenderObject())
        return 0;

    // We need to make sure we pass a valid object as reference.
    if (coreObject->accessibilityIsIgnored())
        coreObject = coreObject->parentObjectUnignored();
    if (!coreObject)
        return 0;

    int offset;
    if (!objectFocusedAndCaretOffsetUnignored(coreObject, offset))
        return 0;

    RenderObject* renderer = coreObject->renderer();
    if (renderer && renderer->isListItem()) {
        String markerText = toRenderListItem(renderer)->markerTextWithSuffix();

        // We need to adjust the offset for the list item marker.
        offset += markerText.length();
    }

    // TODO: Verify this for RTL text.
    return offset;
}
Esempio n. 5
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AccessibilityObject* AXObjectCache::focusedUIElementForPage(const Page* page)
{
    if (!gAccessibilityEnabled)
        return 0;

    // get the focused node in the page
    Document* focusedDocument = page->focusController()->focusedOrMainFrame()->document();
    Node* focusedNode = focusedDocument->focusedNode();
    if (!focusedNode)
        focusedNode = focusedDocument;

    if (focusedNode->hasTagName(areaTag))
        return focusedImageMapUIElement(static_cast<HTMLAreaElement*>(focusedNode));
    
    AccessibilityObject* obj = focusedNode->document()->axObjectCache()->getOrCreate(focusedNode);
    if (!obj)
        return 0;

    if (obj->shouldFocusActiveDescendant()) {
        if (AccessibilityObject* descendant = obj->activeDescendant())
            obj = descendant;
    }

    // the HTML element, for example, is focusable but has an AX object that is ignored
    if (obj->accessibilityIsIgnored())
        obj = obj->parentObjectUnignored();

    return obj;
}
Esempio n. 6
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bool AccessibilityList::childHasPseudoVisibleListItemMarkers(RenderObject* listItem)
{
    // Check if the list item has a pseudo-element that should be accessible (e.g. an image or text)
    Element* listItemElement = downcast<Element>(listItem->node());
    if (!listItemElement || !listItemElement->beforePseudoElement())
        return false;

    AccessibilityObject* axObj = axObjectCache()->getOrCreate(listItemElement->beforePseudoElement()->renderer());
    if (!axObj)
        return false;
    
    if (!axObj->accessibilityIsIgnored())
        return true;
    
    for (const auto& child : axObj->children()) {
        if (!child->accessibilityIsIgnored())
            return true;
    }
    
    // Platforms which expose rendered text content through the parent element will treat
    // those renderers as "ignored" objects.
#if PLATFORM(GTK) || PLATFORM(EFL)
    String text = axObj->textUnderElement();
    return !text.isEmpty() && !text.containsOnlyWhitespace();
#else
    return false;
#endif
}
AccessibilityObject* AccessibilityObject::firstAccessibleObjectFromNode(const Node* node)
{
    ASSERT(AXObjectCache::accessibilityEnabled());

    if (!node)
        return 0;

    Document* document = node->document();
    if (!document)
        return 0;

    AXObjectCache* cache = document->axObjectCache();

    AccessibilityObject* accessibleObject = cache->getOrCreate(node->renderer());
    while (accessibleObject && accessibleObject->accessibilityIsIgnored()) {
        node = node->traverseNextNode();

        while (node && !node->renderer())
            node = node->traverseNextSibling();

        if (!node)
            return 0;

        accessibleObject = cache->getOrCreate(node->renderer());
    }

    return accessibleObject;
}
Esempio n. 8
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AccessibilityObject* AccessibilityObject::parentObjectUnignored() const
{
    AccessibilityObject* parent;
    for (parent = parentObject(); parent && parent->accessibilityIsIgnored(); parent = parent->parentObject())
        ;
    return parent;
}
AccessibilityObject* AccessibilityObject::firstAccessibleObjectFromNode(const Node* node)
{
    if (!node)
        return 0;

    Document* document = node->document();
    if (!document)
        return 0;

    AXObjectCache* cache = document->axObjectCache();

    AccessibilityObject* accessibleObject = cache->getOrCreate(node->renderer());
    while (accessibleObject && accessibleObject->accessibilityIsIgnored()) {
        node = NodeTraversal::next(node);

        while (node && !node->renderer())
            node = NodeTraversal::nextSkippingChildren(node);

        if (!node)
            return 0;

        accessibleObject = cache->getOrCreate(node->renderer());
    }

    return accessibleObject;
}
bool AccessibilityScrollView::computeAccessibilityIsIgnored() const
{
    AccessibilityObject* webArea = webAreaObject();
    if (!webArea)
        return true;
    
    return webArea->accessibilityIsIgnored();
}
void AccessibilityScrollView::addChildren()
{
    ASSERT(!m_haveChildren);
    m_haveChildren = true;
    
    AccessibilityObject* webArea = webAreaObject();
    if (webArea && !webArea->accessibilityIsIgnored())
        m_children.append(webArea);
    
    updateScrollbars();
}
Esempio n. 12
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void AccessibilityARIAGrid::addChildren()
{
    ASSERT(!m_haveChildren); 
    
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    m_haveChildren = true;
    if (!m_renderer)
        return;
    
    AXObjectCache* axCache = m_renderer->document().axObjectCache();
    
    // Add the children rows but be mindful in case there are footer sections in this table.
    HashSet<AccessibilityObject*> appendedRows;
    unsigned columnCount = 0;
    AccessibilityChildrenVector footerSections;
    for (RefPtr<AccessibilityObject> child = firstChild(); child; child = child->nextSibling()) {
        bool footerSection = false;
        if (RenderObject* childRenderer = child->renderer()) {
            if (childRenderer->isTableSection()) {
                if (RenderTableSection* childSection = toRenderTableSection(childRenderer)) {
                    if (childSection == childSection->table()->footer()) {
                        footerSections.append(child);
                        footerSection = true;
                    }
                }
            }
        }
        if (!footerSection)
            addRowDescendant(child.get(), appendedRows, columnCount);
    }
    
    for (const auto& footerSection : footerSections)
        addRowDescendant(footerSection.get(), appendedRows, columnCount);
    
    // make the columns based on the number of columns in the first body
    for (unsigned i = 0; i < columnCount; ++i) {
        AccessibilityTableColumn* column = toAccessibilityTableColumn(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
static bool replacedNodeNeedsCharacter(Node* replacedNode)
{
    // we should always be given a rendered node and a replaced node, but be safe
    // replaced nodes are either attachments (widgets) or images
    if (!replacedNode || !replacedNode->renderer() || !replacedNode->renderer()->isReplaced() || replacedNode->isTextNode())
        return false;

    // create an AX object, but skip it if it is not supposed to be seen
    AccessibilityObject* object = replacedNode->renderer()->document()->axObjectCache()->getOrCreate(replacedNode);
    if (object->accessibilityIsIgnored())
        return false;

    return true;
}
void AccessibilityARIAGrid::addChildren()
{
    ASSERT(!m_haveChildren); 
    
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    m_haveChildren = true;
    if (!m_renderer)
        return;
    
    AXObjectCache* axCache = m_renderer->document()->axObjectCache();
    
    // add only rows that are labeled as aria rows
    HashSet<AccessibilityObject*> appendedRows;
    unsigned columnCount = 0;
    for (RefPtr<AccessibilityObject> child = firstChild(); child; child = child->nextSibling()) {

        if (!addTableCellChild(child.get(), appendedRows, columnCount)) {
            
            // in case the render tree doesn't match the expected ARIA hierarchy, look at the children
            if (!child->hasChildren())
                child->addChildren();

            // The children of this non-row will contain all non-ignored elements (recursing to find them). 
            // This allows the table to dive arbitrarily deep to find the rows.
            AccessibilityChildrenVector children = child->children();
            size_t length = children.size();
            for (size_t i = 0; i < length; ++i)
                addTableCellChild(children[i].get(), appendedRows, columnCount);
        }
    }
    
    // make the columns based on the number of columns in the first body
    for (unsigned i = 0; i < columnCount; ++i) {
        AccessibilityTableColumn* column = static_cast<AccessibilityTableColumn*>(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
void AccessibilityListBox::addChildren()
{
    Node* selectNode = m_renderer->node();
    if (!selectNode)
        return;
    
    m_haveChildren = true;
    
    for (const auto& listItem : toHTMLSelectElement(selectNode)->listItems()) {
        // The cast to HTMLElement below is safe because the only other possible listItem type
        // would be a WMLElement, but WML builds don't use accessibility features at all.
        AccessibilityObject* listOption = listBoxOptionAccessibilityObject(listItem);
        if (listOption && !listOption->accessibilityIsIgnored())
            m_children.append(listOption);
    }
}
Esempio n. 16
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void AXObjectCache::handleFocusedUIElementChanged(RenderObject*, RenderObject* newFocusedRenderer)
{
    if (!newFocusedRenderer)
        return;

    Page* page = newFocusedRenderer->document()->page();
    if (!page || !page->chrome()->platformPageClient())
        return;

    AccessibilityObject* focusedObject = focusedUIElementForPage(page);
    if (!focusedObject)
        return;

    ASSERT(!focusedObject->accessibilityIsIgnored());

    postPlatformNotification(focusedObject, AXFocusedUIElementChanged);
}
Esempio n. 17
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void AccessibilityTable::addChildren()
{
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    ASSERT(!m_haveChildren); 
    
    m_haveChildren = true;
    if (!m_renderer || !m_renderer->isTable())
        return;
    
    RenderTable* table = toRenderTable(m_renderer);
    // Go through all the available sections to pull out the rows and add them as children.
    table->recalcSectionsIfNeeded();
    
    unsigned maxColumnCount = 0;
    RenderTableSection* footer = table->footer();
    
    for (RenderTableSection* tableSection = table->topSection(); tableSection; tableSection = table->sectionBelow(tableSection, SkipEmptySections)) {
        if (tableSection == footer)
            continue;
        addChildrenFromSection(tableSection, maxColumnCount);
    }
    
    // Process the footer last, in case it was ordered earlier in the DOM.
    if (footer)
        addChildrenFromSection(footer, maxColumnCount);
    
    AXObjectCache* axCache = m_renderer->document().axObjectCache();
    // make the columns based on the number of columns in the first body
    unsigned length = maxColumnCount;
    for (unsigned i = 0; i < length; ++i) {
        AccessibilityTableColumn* column = toAccessibilityTableColumn(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
void AccessibilityListBox::addChildren()
{
    Node* selectNode = m_renderer->node();
    if (!selectNode)
        return;
    
    m_haveChildren = true;
    
    const Vector<Element*>& listItems = static_cast<HTMLSelectElement*>(selectNode)->listItems();
    unsigned length = listItems.size();
    for (unsigned i = 0; i < length; i++) {
        // The cast to HTMLElement below is safe because the only other possible listItem type
        // would be a WMLElement, but WML builds don't use accessibility features at all.
        AccessibilityObject* listOption = listBoxOptionAccessibilityObject(toHTMLElement(listItems[i]));
        if (listOption && !listOption->accessibilityIsIgnored())
            m_children.append(listOption);
    }
}
Esempio n. 19
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static gint webkitAccessibleTextGetCaretOffset(AtkText* text)
{
    // coreObject is the unignored object whose offset the caller is requesting.
    // focusedObject is the object with the caret. It is likely ignored -- unless it's a link.
    AccessibilityObject* coreObject = core(text);
    if (!coreObject->isAccessibilityRenderObject())
        return 0;

    // We need to make sure we pass a valid object as reference.
    if (coreObject->accessibilityIsIgnored())
        coreObject = coreObject->parentObjectUnignored();
    if (!coreObject)
        return 0;

    int offset;
    if (!objectFocusedAndCaretOffsetUnignored(coreObject, offset))
        return 0;

    return webCoreOffsetToAtkOffset(coreObject, offset);
}
Esempio n. 20
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void AccessibilityMenuList::addChildren()
{
    m_haveChildren = true;

    AXObjectCache* cache = m_renderer->document().axObjectCache();

    AccessibilityObject* list = cache->getOrCreate(MenuListPopupRole);
    if (!list)
        return;

    toAccessibilityMockObject(list)->setParent(this);
    if (list->accessibilityIsIgnored()) {
        cache->remove(list->axObjectID());
        return;
    }

    m_children.append(list);

    list->addChildren();
}
Esempio n. 21
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void AXObjectCache::notificationPostTimerFired(Timer<AXObjectCache>*)
{
    RefPtr<Document> protectorForCacheOwner(m_document);

    m_notificationPostTimer.stop();

    unsigned i = 0, count = m_notificationsToPost.size();
    for (i = 0; i < count; ++i) {
        AccessibilityObject* obj = m_notificationsToPost[i].first.get();
        if (!obj->axObjectID())
            continue;

        if (!obj->axObjectCache())
            continue;

#ifndef NDEBUG
        // Make sure none of the render views are in the process of being layed out.
        // Notifications should only be sent after the renderer has finished
        if (obj->isAccessibilityRenderObject()) {
            AccessibilityRenderObject* renderObj = toAccessibilityRenderObject(obj);
            RenderObject* renderer = renderObj->renderer();
            if (renderer && renderer->view())
                ASSERT(!renderer->view()->layoutState());
        }
#endif

        AXNotification notification = m_notificationsToPost[i].second;
        postPlatformNotification(obj, notification);

        if (notification == AXChildrenChanged && obj->parentObjectIfExists() && obj->lastKnownIsIgnoredValue() != obj->accessibilityIsIgnored())
            childrenChanged(obj->parentObject());
    }

    m_notificationsToPost.clear();
}
Esempio n. 22
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void AccessibilityTable::addChildren()
{
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    ASSERT(!m_haveChildren); 
    
    m_haveChildren = true;
    if (!m_renderer || !m_renderer->isTable())
        return;
    
    RenderTable* table = toRenderTable(m_renderer);
    AXObjectCache* axCache = m_renderer->document()->axObjectCache();

    // go through all the available sections to pull out the rows
    // and add them as children
    // FIXME: This will skip a table with just a tfoot. Should fix by using RenderTable::topSection.
    RenderTableSection* tableSection = table->header();
    if (!tableSection)
        tableSection = table->firstBody();
    
    if (!tableSection)
        return;
    
    RenderTableSection* initialTableSection = tableSection;
    
    while (tableSection) {
        
        HashSet<AccessibilityObject*> appendedRows;

        unsigned numRows = tableSection->numRows();
        unsigned numCols = tableSection->numColumns();
        for (unsigned rowIndex = 0; rowIndex < numRows; ++rowIndex) {
            for (unsigned colIndex = 0; colIndex < numCols; ++colIndex) {
                
                RenderTableCell* cell = tableSection->primaryCellAt(rowIndex, colIndex);
                if (!cell)
                    continue;
                
                AccessibilityObject* rowObject = axCache->getOrCreate(cell->parent());
                if (!rowObject->isTableRow())
                    continue;
                
                AccessibilityTableRow* row = static_cast<AccessibilityTableRow*>(rowObject);
                // we need to check every cell for a new row, because cell spans
                // can cause us to mess rows if we just check the first column
                if (appendedRows.contains(row))
                    continue;
                
                row->setRowIndex((int)m_rows.size());        
                m_rows.append(row);
                if (!row->accessibilityIsIgnored())
                    m_children.append(row);
#if PLATFORM(GTK)
                else
                    m_children.append(row->children());
#endif
                appendedRows.add(row);
            }
        }
        
        tableSection = table->sectionBelow(tableSection, SkipEmptySections);
    }
    
    // make the columns based on the number of columns in the first body
    unsigned length = initialTableSection->numColumns();
    for (unsigned i = 0; i < length; ++i) {
        AccessibilityTableColumn* column = static_cast<AccessibilityTableColumn*>(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
Esempio n. 23
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void AXObjectCache::notificationPostTimerFired(Timer<AXObjectCache>&)
{
    Ref<Document> protectorForCacheOwner(m_document);
    m_notificationPostTimer.stop();
    
    // In DRT, posting notifications has a tendency to immediately queue up other notifications, which can lead to unexpected behavior
    // when the notification list is cleared at the end. Instead copy this list at the start.
    auto notifications = m_notificationsToPost;
    m_notificationsToPost.clear();
    
    for (const auto& note : notifications) {
        AccessibilityObject* obj = note.first.get();
        if (!obj->axObjectID())
            continue;

        if (!obj->axObjectCache())
            continue;
        
#ifndef NDEBUG
        // Make sure none of the render views are in the process of being layed out.
        // Notifications should only be sent after the renderer has finished
        if (obj->isAccessibilityRenderObject()) {
            AccessibilityRenderObject* renderObj = toAccessibilityRenderObject(obj);
            RenderObject* renderer = renderObj->renderer();
            if (renderer)
                ASSERT(!renderer->view().layoutState());
        }
#endif

        AXNotification notification = note.second;
        postPlatformNotification(obj, notification);

        if (notification == AXChildrenChanged && obj->parentObjectIfExists() && obj->lastKnownIsIgnoredValue() != obj->accessibilityIsIgnored())
            childrenChanged(obj->parentObject());
    }
}
Esempio n. 24
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void AccessibilityTable::addChildren()
{
    if (!isAccessibilityTable()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    ASSERT(!m_haveChildren); 
    
    m_haveChildren = true;
    if (!m_renderer || !m_renderer->isTable())
        return;
    
    RenderTable* table = toRenderTable(m_renderer);
    AXObjectCache* axCache = m_renderer->document().axObjectCache();

    // Go through all the available sections to pull out the rows and add them as children.
    table->recalcSectionsIfNeeded();
    RenderTableSection* tableSection = table->topSection();
    if (!tableSection)
        return;
    
    unsigned maxColumnCount = 0;
    while (tableSection) {
        
        HashSet<AccessibilityObject*> appendedRows;
        unsigned numRows = tableSection->numRows();
        for (unsigned rowIndex = 0; rowIndex < numRows; ++rowIndex) {
            
            RenderTableRow* renderRow = tableSection->rowRendererAt(rowIndex);
            if (!renderRow)
                continue;
            
            AccessibilityObject* rowObject = axCache->getOrCreate(renderRow);
            if (!rowObject->isTableRow())
                continue;
            
            AccessibilityTableRow* row = toAccessibilityTableRow(rowObject);
            // We need to check every cell for a new row, because cell spans
            // can cause us to miss rows if we just check the first column.
            if (appendedRows.contains(row))
                continue;
            
            row->setRowIndex(static_cast<int>(m_rows.size()));
            m_rows.append(row);
            if (!row->accessibilityIsIgnored())
                m_children.append(row);
#if PLATFORM(GTK) || PLATFORM(EFL)
            else
                m_children.appendVector(row->children());
#endif
            appendedRows.add(row);
        }
    
        maxColumnCount = std::max(tableSection->numColumns(), maxColumnCount);
        tableSection = table->sectionBelow(tableSection, SkipEmptySections);
    }
    
    // make the columns based on the number of columns in the first body
    unsigned length = maxColumnCount;
    for (unsigned i = 0; i < length; ++i) {
        AccessibilityTableColumn* column = toAccessibilityTableColumn(axCache->getOrCreate(ColumnRole));
        column->setColumnIndex((int)i);
        column->setParent(this);
        m_columns.append(column);
        if (!column->accessibilityIsIgnored())
            m_children.append(column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);
}
Esempio n. 25
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AccessibilityObject* objectFocusedAndCaretOffsetUnignored(AccessibilityObject* referenceObject, int& offset)
{
    // Indication that something bogus has transpired.
    offset = -1;

    Document* document = referenceObject->document();
    if (!document)
        return 0;

    Node* focusedNode = referenceObject->selection().end().containerNode();
    if (!focusedNode)
        return 0;

    RenderObject* focusedRenderer = focusedNode->renderer();
    if (!focusedRenderer)
        return 0;

    AccessibilityObject* focusedObject = document->axObjectCache()->getOrCreate(focusedRenderer);
    if (!focusedObject)
        return 0;

    // Look for the actual (not ignoring accessibility) selected object.
    AccessibilityObject* firstUnignoredParent = focusedObject;
    if (firstUnignoredParent->accessibilityIsIgnored())
        firstUnignoredParent = firstUnignoredParent->parentObjectUnignored();
    if (!firstUnignoredParent)
        return 0;

    // Don't ignore links if the offset is being requested for a link.
    if (!referenceObject->isLink() && firstUnignoredParent->isLink())
        firstUnignoredParent = firstUnignoredParent->parentObjectUnignored();
    if (!firstUnignoredParent)
        return 0;

    // The reference object must either coincide with the focused
    // object being considered, or be a descendant of it.
    if (referenceObject->isDescendantOfObject(firstUnignoredParent))
        referenceObject = firstUnignoredParent;

    Node* startNode = 0;
    if (firstUnignoredParent != referenceObject || firstUnignoredParent->isTextControl()) {
        // We need to use the first child's node of the reference
        // object as the start point to calculate the caret offset
        // because we want it to be relative to the object of
        // reference, not just to the focused object (which could have
        // previous siblings which should be taken into account too).
        AccessibilityObject* axFirstChild = referenceObject->firstChild();
        if (axFirstChild)
            startNode = axFirstChild->node();
    }
    // Getting the Position of a PseudoElement now triggers an assertion.
    // This can occur when clicking on empty space in a render block.
    if (!startNode || startNode->isPseudoElement())
        startNode = firstUnignoredParent->node();

    // Check if the node for the first parent object not ignoring
    // accessibility is null again before using it. This might happen
    // with certain kind of accessibility objects, such as the root
    // one (the scroller containing the webArea object).
    if (!startNode)
        return 0;

    VisiblePosition startPosition = VisiblePosition(positionBeforeNode(startNode), DOWNSTREAM);
    VisiblePosition endPosition = firstUnignoredParent->selection().visibleEnd();

    if (startPosition == endPosition)
        offset = 0;
    else if (!isStartOfLine(endPosition)) {
        RefPtr<Range> range = makeRange(startPosition, endPosition.previous());
        offset = TextIterator::rangeLength(range.get(), true) + 1;
    } else {
        RefPtr<Range> range = makeRange(startPosition, endPosition);
        offset = TextIterator::rangeLength(range.get(), true);
    }

    return firstUnignoredParent;
}
Esempio n. 26
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void AccessibilityTable::addChildren()
{
    if (!isExposableThroughAccessibility()) {
        AccessibilityRenderObject::addChildren();
        return;
    }
    
    ASSERT(!m_haveChildren); 
    
    m_haveChildren = true;
    if (!is<RenderTable>(m_renderer))
        return;
    
    RenderTable& table = downcast<RenderTable>(*m_renderer);
    // Go through all the available sections to pull out the rows and add them as children.
    table.recalcSectionsIfNeeded();
    
    if (HTMLTableElement* tableElement = this->tableElement()) {
        if (HTMLTableCaptionElement* caption = tableElement->caption()) {
            AccessibilityObject* axCaption = axObjectCache()->getOrCreate(caption);
            if (axCaption && !axCaption->accessibilityIsIgnored())
                m_children.append(axCaption);
        }
    }

    unsigned maxColumnCount = 0;
    RenderTableSection* footer = table.footer();
    
    for (RenderTableSection* tableSection = table.topSection(); tableSection; tableSection = table.sectionBelow(tableSection, SkipEmptySections)) {
        if (tableSection == footer)
            continue;
        addChildrenFromSection(tableSection, maxColumnCount);
    }
    
    // Process the footer last, in case it was ordered earlier in the DOM.
    if (footer)
        addChildrenFromSection(footer, maxColumnCount);
    
    AXObjectCache* axCache = m_renderer->document().axObjectCache();
    // make the columns based on the number of columns in the first body
    unsigned length = maxColumnCount;
    for (unsigned i = 0; i < length; ++i) {
        auto& column = downcast<AccessibilityTableColumn>(*axCache->getOrCreate(ColumnRole));
        column.setColumnIndex((int)i);
        column.setParent(this);
        m_columns.append(&column);
        if (!column.accessibilityIsIgnored())
            m_children.append(&column);
    }
    
    AccessibilityObject* headerContainerObject = headerContainer();
    if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
        m_children.append(headerContainerObject);

    // Sometimes the cell gets the wrong role initially because it is created before the parent
    // determines whether it is an accessibility table. Iterate all the cells and allow them to
    // update their roles now that the table knows its status.
    // see bug: https://bugs.webkit.org/show_bug.cgi?id=147001
    for (const auto& row : m_rows) {
        for (const auto& cell : row->children())
            cell->updateAccessibilityRole();
    }

}