#include "config.h"
#include "AXObjectCache.h"
#include "AccessibilityList.h"
#include "AccessibilityListBox.h"
#include "AccessibilityListBoxOption.h"
#include "AccessibilityImageMapLink.h"
#include "AccessibilityRenderObject.h"
#include "AccessibilityTable.h"
#include "AccessibilityTableCell.h"
#include "AccessibilityTableColumn.h"
#include "AccessibilityTableHeaderContainer.h"
#include "AccessibilityTableRow.h"
#include "HTMLNames.h"
#include "RenderObject.h"
#include <wtf/PassRefPtr.h>
namespace WebCore {
using namespace HTMLNames;
bool AXObjectCache::gAccessibilityEnabled = false;
bool AXObjectCache::gAccessibilityEnhancedUserInterfaceEnabled = false;
AXObjectCache::~AXObjectCache()
{
HashMap<AXID, RefPtr<AccessibilityObject> >::iterator end = m_objects.end();
for (HashMap<AXID, RefPtr<AccessibilityObject> >::iterator it = m_objects.begin(); it != end; ++it) {
AccessibilityObject* obj = (*it).second.get();
detachWrapper(obj);
obj->detach();
}
}
AccessibilityObject* AXObjectCache::get(RenderObject* renderer)
{
if (!renderer)
return 0;
RefPtr<AccessibilityObject> obj = 0;
AXID axID = m_renderObjectMapping.get(renderer);
ASSERT(!HashTraits<AXID>::isDeletedValue(axID));
if (axID)
obj = m_objects.get(axID).get();
Node* element = renderer->element();
if (!obj) {
if (renderer->isListBox())
obj = AccessibilityListBox::create(renderer);
else if (element && (element->hasTagName(ulTag) || element->hasTagName(olTag) || element->hasTagName(dlTag)))
obj = AccessibilityList::create(renderer);
else if (renderer->isTable())
obj = AccessibilityTable::create(renderer);
else if (renderer->isTableRow())
obj = AccessibilityTableRow::create(renderer);
else if (renderer->isTableCell())
obj = AccessibilityTableCell::create(renderer);
else
obj = AccessibilityRenderObject::create(renderer);
getAXID(obj.get());
m_renderObjectMapping.set(renderer, obj.get()->axObjectID());
m_objects.set(obj.get()->axObjectID(), obj);
attachWrapper(obj.get());
}
return obj.get();
}
AccessibilityObject* AXObjectCache::get(AccessibilityRole role)
{
RefPtr<AccessibilityObject> obj = 0;
switch (role) {
case ListBoxOptionRole:
obj = AccessibilityListBoxOption::create();
break;
case ImageMapLinkRole:
obj = AccessibilityImageMapLink::create();
break;
case ColumnRole:
obj = AccessibilityTableColumn::create();
break;
case TableHeaderContainerRole:
obj = AccessibilityTableHeaderContainer::create();
break;
default:
obj = 0;
}
if (obj)
getAXID(obj.get());
else
return 0;
m_objects.set(obj->axObjectID(), obj);
attachWrapper(obj.get());
return obj.get();
}
void AXObjectCache::remove(AXID axID)
{
if (!axID)
return;
AccessibilityObject* obj = m_objects.get(axID).get();
if (!obj)
return;
detachWrapper(obj);
obj->detach();
removeAXID(obj);
if (!m_objects.take(axID)) {
return;
}
ASSERT(m_objects.size() >= m_idsInUse.size());
}
void AXObjectCache::remove(RenderObject* renderer)
{
if (!renderer)
return;
AXID axID = m_renderObjectMapping.get(renderer);
remove(axID);
m_renderObjectMapping.remove(renderer);
}
AXID AXObjectCache::getAXID(AccessibilityObject* obj)
{
AXID objID = obj->axObjectID();
if (objID) {
ASSERT(m_idsInUse.contains(objID));
return objID;
}
static AXID lastUsedID = 0;
objID = lastUsedID;
do
++objID;
while (objID == 0 || HashTraits<AXID>::isDeletedValue(objID) || m_idsInUse.contains(objID));
m_idsInUse.add(objID);
lastUsedID = objID;
obj->setAXObjectID(objID);
return objID;
}
void AXObjectCache::removeAXID(AccessibilityObject* obj)
{
AXID objID = obj->axObjectID();
if (objID == 0)
return;
ASSERT(!HashTraits<AXID>::isDeletedValue(objID));
ASSERT(m_idsInUse.contains(objID));
obj->setAXObjectID(0);
m_idsInUse.remove(objID);
}
void AXObjectCache::childrenChanged(RenderObject* renderer)
{
if (!renderer)
return;
AXID axID = m_renderObjectMapping.get(renderer);
if (!axID)
return;
AccessibilityObject* obj = m_objects.get(axID).get();
if (obj)
obj->childrenChanged();
}
#if HAVE(ACCESSIBILITY)
void AXObjectCache::selectedChildrenChanged(RenderObject* renderer)
{
postNotificationToElement(renderer, "AXSelectedChildrenChanged");
}
#endif
#if HAVE(ACCESSIBILITY)
void AXObjectCache::handleActiveDescendantChanged(RenderObject* renderer)
{
if (!renderer)
return;
AccessibilityObject* obj = get(renderer);
if (obj)
obj->handleActiveDescendantChanged();
}
void AXObjectCache::handleAriaRoleChanged(RenderObject* renderer)
{
if (!renderer)
return;
AccessibilityObject* obj = get(renderer);
if (obj && obj->isAccessibilityRenderObject())
static_cast<AccessibilityRenderObject*>(obj)->setAriaRole();
}
#endif
}