#include "AccessibilityObject.h"
#include "AccessibilityObjectWrapperAtk.h"
+#include "AccessibilityRenderObject.h"
+#include "GOwnPtr.h"
+#include "Range.h"
+#include "SelectElement.h"
+#include "TextIterator.h"
namespace WebCore {
g_object_unref(atkObj);
}
+static void notifyChildrenSelectionChange(AccessibilityObject* object)
+{
+ // This static variable is needed to keep track of the old focused
+ // object as per previous calls to this function, in order to
+ // properly decide whether to emit some signals or not.
+ static RefPtr<AccessibilityObject> oldFocusedObject = 0;
+
+ // Only list boxes supported so far.
+ if (!object || !object->isListBox())
+ return;
+
+ // Emit signal from the listbox's point of view first.
+ g_signal_emit_by_name(object->wrapper(), "selection-changed");
+
+ // Find the item where the selection change was triggered from.
+ AccessibilityObject::AccessibilityChildrenVector items = object->children();
+ SelectElement* select = toSelectElement(static_cast<Element*>(object->node()));
+ if (!select)
+ return;
+ int changedItemIndex = select->activeSelectionStartListIndex();
+ if (changedItemIndex < 0 || changedItemIndex >= static_cast<int>(items.size()))
+ return;
+ AccessibilityObject* item = items.at(changedItemIndex).get();
+
+ // Ensure the oldFocusedObject belongs to the same document that
+ // the current item so further comparisons make sense. Otherwise,
+ // just reset oldFocusedObject so it won't be taken into account.
+ if (item && oldFocusedObject && item->document() != oldFocusedObject->document())
+ oldFocusedObject = 0;
+
+ AtkObject* axItem = item ? item->wrapper() : 0;
+ AtkObject* axOldFocusedObject = oldFocusedObject ? oldFocusedObject->wrapper() : 0;
+
+ // Old focused object just lost focus, so emit the events.
+ if (axOldFocusedObject && axItem != axOldFocusedObject) {
+ g_signal_emit_by_name(axOldFocusedObject, "focus-event", false);
+ g_signal_emit_by_name(axOldFocusedObject, "state-change", "focused", false);
+ }
+
+ // Emit needed events for the currently (un)selected item.
+ if (axItem) {
+ bool isSelected = item->isSelected();
+ g_signal_emit_by_name(axItem, "state-change", "selected", isSelected);
+ g_signal_emit_by_name(axItem, "focus-event", isSelected);
+ g_signal_emit_by_name(axItem, "state-change", "focused", isSelected);
+ }
+
+ // Update pointer to the previously focused object.
+ oldFocusedObject = item;
+}
+
void AXObjectCache::postPlatformNotification(AccessibilityObject* coreObject, AXNotification notification)
{
+ AtkObject* axObject = coreObject->wrapper();
+ if (!axObject)
+ return;
+
if (notification == AXCheckedStateChanged) {
if (!coreObject->isCheckboxOrRadio())
return;
- g_signal_emit_by_name(coreObject->wrapper(), "state-change", "checked", coreObject->isChecked());
+ g_signal_emit_by_name(axObject, "state-change", "checked", coreObject->isChecked());
+ } else if (notification == AXMenuListValueChanged) {
+ if (!coreObject->isMenuList())
+ return;
+ g_signal_emit_by_name(axObject, "focus-event", true);
+ g_signal_emit_by_name(axObject, "state-change", "focused", true);
+ } else if (notification == AXSelectedChildrenChanged)
+ notifyChildrenSelectionChange(coreObject);
+}
+
+static void emitTextChanged(AccessibilityRenderObject* object, AXObjectCache::AXTextChange textChange, unsigned offset, unsigned count)
+{
+ // Get the axObject for the parent object
+ AtkObject* wrapper = object->parentObjectUnignored()->wrapper();
+ if (!wrapper || !ATK_IS_TEXT(wrapper))
+ return;
+
+ // Select the right signal to be emitted
+ CString detail;
+ switch (textChange) {
+ case AXObjectCache::AXTextInserted:
+ detail = "text-changed::insert";
+ break;
+ case AXObjectCache::AXTextDeleted:
+ detail = "text-changed::delete";
+ break;
}
+
+ if (!detail.isNull())
+ g_signal_emit_by_name(wrapper, detail.data(), offset, count);
+}
+
+void AXObjectCache::nodeTextChangePlatformNotification(AccessibilityObject* object, AXTextChange textChange, unsigned offset, unsigned count)
+{
+ // Sanity check
+ if (count < 1 || !object || !object->isAccessibilityRenderObject())
+ return;
+
+ Node* node = object->node();
+ RefPtr<Range> range = Range::create(node->document(), Position(node->parentNode(), 0), Position(node, 0));
+ emitTextChanged(toAccessibilityRenderObject(object), textChange, offset + TextIterator::rangeLength(range.get()), count);
}
void AXObjectCache::handleFocusedUIElementChanged(RenderObject* oldFocusedRender, RenderObject* newFocusedRender)