NS_IMETHODIMP
nsAccessiblePivot::MovePrevious(nsIAccessibleTraversalRule* aRule,
nsIAccessible* aAnchor,
bool aIncludeStart, bool aIsFromUserInput,
uint8_t aArgc, bool* aResult)
{
NS_ENSURE_ARG(aResult);
NS_ENSURE_ARG(aRule);
*aResult = false;
Accessible* anchor = mPosition;
if (aArgc > 0 && aAnchor)
anchor = aAnchor->ToInternalAccessible();
if (anchor && (anchor->IsDefunct() || !IsDescendantOf(anchor, GetActiveRoot())))
return NS_ERROR_NOT_IN_TREE;
nsresult rv = NS_OK;
Accessible* accessible =
SearchBackward(anchor, aRule, (aArgc > 1) ? aIncludeStart : false, &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (accessible)
*aResult = MovePivotInternal(accessible, nsIAccessiblePivot::REASON_PREV,
(aArgc > 2) ? aIsFromUserInput : true);
return NS_OK;
}
NS_IMETHODIMP
nsAccessiblePivot::MoveLast(nsIAccessibleTraversalRule* aRule,
bool* aResult)
{
NS_ENSURE_ARG(aResult);
NS_ENSURE_ARG(aRule);
Accessible* root = GetActiveRoot();
NS_ENSURE_TRUE(root && !root->IsDefunct(), NS_ERROR_NOT_IN_TREE);
*aResult = false;
nsresult rv = NS_OK;
Accessible* lastAccessible = root;
Accessible* accessible = nullptr;
// First go to the last accessible in pre-order
while (lastAccessible->HasChildren())
lastAccessible = lastAccessible->LastChild();
// Search backwards from last accessible and find the last occurrence in the doc
accessible = SearchBackward(lastAccessible, aRule, true, &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (accessible)
*aResult = MovePivotInternal(accessible, nsAccessiblePivot::REASON_LAST);
return NS_OK;
}
STDMETHODIMP
ia2AccessibleHyperlink::get_anchor(long aIndex, VARIANT* aAnchor)
{
A11Y_TRYBLOCK_BEGIN
VariantInit(aAnchor);
Accessible* thisObj = static_cast<AccessibleWrap*>(this);
if (thisObj->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (aIndex < 0 || aIndex >= static_cast<long>(thisObj->AnchorCount()))
return E_INVALIDARG;
if (!thisObj->IsLink())
return S_FALSE;
AccessibleWrap* anchor =
static_cast<AccessibleWrap*>(thisObj->AnchorAt(aIndex));
if (!anchor)
return S_FALSE;
void* instancePtr = nullptr;
HRESULT result = anchor->QueryInterface(IID_IUnknown, &instancePtr);
if (FAILED(result))
return result;
IUnknown* unknownPtr = static_cast<IUnknown*>(instancePtr);
aAnchor->ppunkVal = &unknownPtr;
aAnchor->vt = VT_UNKNOWN;
return S_OK;
A11Y_TRYBLOCK_END
}
NS_IMETHODIMP
nsAccessiblePivot::MoveToPoint(nsIAccessibleTraversalRule* aRule,
int32_t aX, int32_t aY, bool aIgnoreNoMatch,
bool aIsFromUserInput, uint8_t aArgc,
bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_ARG_POINTER(aRule);
*aResult = false;
Accessible* root = GetActiveRoot();
NS_ENSURE_TRUE(root && !root->IsDefunct(), NS_ERROR_NOT_IN_TREE);
RuleCache cache(aRule);
Accessible* match = nullptr;
Accessible* child = root->ChildAtPoint(aX, aY, Accessible::eDeepestChild);
while (child && root != child) {
uint16_t filtered = nsIAccessibleTraversalRule::FILTER_IGNORE;
nsresult rv = cache.ApplyFilter(child, &filtered);
NS_ENSURE_SUCCESS(rv, rv);
// Ignore any matching nodes that were below this one
if (filtered & nsIAccessibleTraversalRule::FILTER_IGNORE_SUBTREE)
match = nullptr;
// Match if no node below this is a match
if ((filtered & nsIAccessibleTraversalRule::FILTER_MATCH) && !match) {
int32_t childX, childY, childWidth, childHeight;
child->GetBounds(&childX, &childY, &childWidth, &childHeight);
// Double-check child's bounds since the deepest child may have been out
// of bounds. This assures we don't return a false positive.
if (aX >= childX && aX < childX + childWidth &&
aY >= childY && aY < childY + childHeight)
match = child;
}
child = child->Parent();
}
if (match || !aIgnoreNoMatch)
*aResult = MovePivotInternal(match, nsIAccessiblePivot::REASON_POINT,
(aArgc > 0) ? aIsFromUserInput : true);
return NS_OK;
}
NS_IMETHODIMP
nsAccessiblePivot::MoveFirst(nsIAccessibleTraversalRule* aRule, bool* aResult)
{
NS_ENSURE_ARG(aResult);
NS_ENSURE_ARG(aRule);
Accessible* root = GetActiveRoot();
NS_ENSURE_TRUE(root && !root->IsDefunct(), NS_ERROR_NOT_IN_TREE);
nsresult rv = NS_OK;
Accessible* accessible = SearchForward(root, aRule, true, &rv);
NS_ENSURE_SUCCESS(rv, rv);
if (accessible)
*aResult = MovePivotInternal(accessible, nsIAccessiblePivot::REASON_FIRST);
return NS_OK;
}
STDMETHODIMP
ia2AccessibleHyperlink::get_valid(boolean* aValid)
{
A11Y_TRYBLOCK_BEGIN
*aValid = false;
Accessible* thisObj = static_cast<AccessibleWrap*>(this);
if (thisObj->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!thisObj->IsLink())
return S_FALSE;
*aValid = thisObj->IsLinkValid();
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleHyperlink::get_endIndex(long* aIndex)
{
A11Y_TRYBLOCK_BEGIN
*aIndex = 0;
Accessible* thisObj = static_cast<AccessibleWrap*>(this);
if (thisObj->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (!thisObj->IsLink())
return S_FALSE;
*aIndex = thisObj->EndOffset();
return S_OK;
A11Y_TRYBLOCK_END
}
STDMETHODIMP
ia2AccessibleHyperlink::get_anchorTarget(long aIndex, VARIANT* aAnchorTarget)
{
A11Y_TRYBLOCK_BEGIN
VariantInit(aAnchorTarget);
Accessible* thisObj = static_cast<AccessibleWrap*>(this);
if (thisObj->IsDefunct())
return CO_E_OBJNOTCONNECTED;
if (aIndex < 0 || aIndex >= static_cast<long>(thisObj->AnchorCount()))
return E_INVALIDARG;
if (!thisObj->IsLink())
return S_FALSE;
nsCOMPtr<nsIURI> uri = thisObj->AnchorURIAt(aIndex);
if (!uri)
return S_FALSE;
nsAutoCString prePath;
nsresult rv = uri->GetPrePath(prePath);
if (NS_FAILED(rv))
return GetHRESULT(rv);
nsAutoCString path;
rv = uri->GetPath(path);
if (NS_FAILED(rv))
return GetHRESULT(rv);
nsAutoString stringURI;
AppendUTF8toUTF16(prePath, stringURI);
AppendUTF8toUTF16(path, stringURI);
aAnchorTarget->vt = VT_BSTR;
aAnchorTarget->bstrVal = ::SysAllocStringLen(stringURI.get(),
stringURI.Length());
return aAnchorTarget->bstrVal ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
void DocAccessibleWrap::UpdateFocusPathBounds() {
if (!mFocusPath.Count()) {
return;
}
if (IPCAccessibilityActive()) {
DocAccessibleChild* ipcDoc = IPCDoc();
nsTArray<BatchData> boundsData(mFocusPath.Count());
for (auto iter = mFocusPath.Iter(); !iter.Done(); iter.Next()) {
Accessible* accessible = iter.Data();
if (!accessible || accessible->IsDefunct()) {
MOZ_ASSERT_UNREACHABLE("Focus path cached accessible is gone.");
continue;
}
auto uid = accessible->IsDoc() && accessible->AsDoc()->IPCDoc()
? 0
: reinterpret_cast<uint64_t>(accessible->UniqueID());
boundsData.AppendElement(BatchData(
accessible->Document()->IPCDoc(), uid, 0, accessible->Bounds(), 0,
nsString(), nsString(), nsString(), UnspecifiedNaN<double>(),
UnspecifiedNaN<double>(), UnspecifiedNaN<double>(),
UnspecifiedNaN<double>(), nsTArray<Attribute>()));
}
ipcDoc->SendBatch(eBatch_BoundsUpdate, boundsData);
} else if (SessionAccessibility* sessionAcc =
SessionAccessibility::GetInstanceFor(this)) {
nsTArray<AccessibleWrap*> accessibles(mFocusPath.Count());
for (auto iter = mFocusPath.Iter(); !iter.Done(); iter.Next()) {
accessibles.AppendElement(
static_cast<AccessibleWrap*>(iter.Data().get()));
}
sessionAcc->UpdateCachedBounds(accessibles);
}
}
nsresult
AccessibleWrap::HandleAccEvent(AccEvent* aEvent)
{
nsresult rv = Accessible::HandleAccEvent(aEvent);
NS_ENSURE_SUCCESS(rv, rv);
Accessible* accessible = aEvent->GetAccessible();
NS_ENSURE_TRUE(accessible, NS_ERROR_FAILURE);
// The accessible can become defunct if we have an xpcom event listener
// which decides it would be fun to change the DOM and flush layout.
if (accessible->IsDefunct())
return NS_OK;
uint32_t type = aEvent->GetEventType();
AtkObject* atkObj = AccessibleWrap::GetAtkObject(accessible);
// We don't create ATK objects for plain text leaves, just return NS_OK in
// such case.
if (!atkObj) {
NS_ASSERTION(type == nsIAccessibleEvent::EVENT_SHOW ||
type == nsIAccessibleEvent::EVENT_HIDE,
"Event other than SHOW and HIDE fired for plain text leaves");
return NS_OK;
}
AccessibleWrap* accWrap = GetAccessibleWrap(atkObj);
if (!accWrap) {
return NS_OK; // Node is shut down
}
switch (type) {
case nsIAccessibleEvent::EVENT_STATE_CHANGE:
{
AccStateChangeEvent* event = downcast_accEvent(aEvent);
MAI_ATK_OBJECT(atkObj)->FireStateChangeEvent(event->GetState(),
event->IsStateEnabled());
break;
}
case nsIAccessibleEvent::EVENT_TEXT_REMOVED:
case nsIAccessibleEvent::EVENT_TEXT_INSERTED:
return FireAtkTextChangedEvent(aEvent, atkObj);
case nsIAccessibleEvent::EVENT_FOCUS:
{
a11y::RootAccessible* rootAccWrap = accWrap->RootAccessible();
if (rootAccWrap && rootAccWrap->mActivated) {
atk_focus_tracker_notify(atkObj);
// Fire state change event for focus
atk_object_notify_state_change(atkObj, ATK_STATE_FOCUSED, true);
return NS_OK;
}
} break;
case nsIAccessibleEvent::EVENT_NAME_CHANGE:
{
nsAutoString newName;
accessible->Name(newName);
MaybeFireNameChange(atkObj, newName);
break;
}
case nsIAccessibleEvent::EVENT_VALUE_CHANGE:
if (accessible->HasNumericValue()) {
// Make sure this is a numeric value. Don't fire for string value changes
// (e.g. text editing) ATK values are always numeric.
g_object_notify((GObject*)atkObj, "accessible-value");
}
break;
case nsIAccessibleEvent::EVENT_SELECTION:
case nsIAccessibleEvent::EVENT_SELECTION_ADD:
case nsIAccessibleEvent::EVENT_SELECTION_REMOVE:
{
// XXX: dupe events may be fired
AccSelChangeEvent* selChangeEvent = downcast_accEvent(aEvent);
g_signal_emit_by_name(AccessibleWrap::GetAtkObject(selChangeEvent->Widget()),
"selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_SELECTION_WITHIN:
{
g_signal_emit_by_name(atkObj, "selection_changed");
break;
}
case nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED:
g_signal_emit_by_name(atkObj, "text_selection_changed");
break;
case nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED:
{
AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(aEvent);
NS_ASSERTION(caretMoveEvent, "Event needs event data");
if (!caretMoveEvent)
break;
int32_t caretOffset = caretMoveEvent->GetCaretOffset();
g_signal_emit_by_name(atkObj, "text_caret_moved", caretOffset);
} break;
case nsIAccessibleEvent::EVENT_TEXT_ATTRIBUTE_CHANGED:
g_signal_emit_by_name(atkObj, "text-attributes-changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_MODEL_CHANGED:
g_signal_emit_by_name(atkObj, "model_changed");
break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_INSERT:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t rowIndex = tableEvent->GetIndex();
int32_t numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "row_inserted", rowIndex, numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_DELETE:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t rowIndex = tableEvent->GetIndex();
int32_t numRows = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "row_deleted", rowIndex, numRows);
} break;
case nsIAccessibleEvent::EVENT_TABLE_ROW_REORDER:
{
g_signal_emit_by_name(atkObj, "row_reordered");
break;
}
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_INSERT:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t colIndex = tableEvent->GetIndex();
int32_t numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "column_inserted", colIndex, numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_DELETE:
{
AccTableChangeEvent* tableEvent = downcast_accEvent(aEvent);
NS_ENSURE_TRUE(tableEvent, NS_ERROR_FAILURE);
int32_t colIndex = tableEvent->GetIndex();
int32_t numCols = tableEvent->GetCount();
g_signal_emit_by_name(atkObj, "column_deleted", colIndex, numCols);
} break;
case nsIAccessibleEvent::EVENT_TABLE_COLUMN_REORDER:
g_signal_emit_by_name(atkObj, "column_reordered");
break;
case nsIAccessibleEvent::EVENT_SECTION_CHANGED:
g_signal_emit_by_name(atkObj, "visible_data_changed");
break;
case nsIAccessibleEvent::EVENT_SHOW:
return FireAtkShowHideEvent(aEvent, atkObj, true);
case nsIAccessibleEvent::EVENT_HIDE:
// XXX - Handle native dialog accessibles.
if (!accessible->IsRoot() && accessible->HasARIARole() &&
accessible->ARIARole() == roles::DIALOG) {
guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
}
return FireAtkShowHideEvent(aEvent, atkObj, false);
/*
* Because dealing with menu is very different between nsIAccessible
* and ATK, and the menu activity is important, specially transfer the
* following two event.
* Need more verification by AT test.
*/
case nsIAccessibleEvent::EVENT_MENU_START:
case nsIAccessibleEvent::EVENT_MENU_END:
break;
case nsIAccessibleEvent::EVENT_WINDOW_ACTIVATE:
{
accessible->AsRoot()->mActivated = true;
guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
// Always fire a current focus event after activation.
FocusMgr()->ForceFocusEvent();
} break;
case nsIAccessibleEvent::EVENT_WINDOW_DEACTIVATE:
{
accessible->AsRoot()->mActivated = false;
guint id = g_signal_lookup("deactivate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MAXIMIZE:
{
guint id = g_signal_lookup("maximize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_MINIMIZE:
{
guint id = g_signal_lookup("minimize", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_WINDOW_RESTORE:
{
guint id = g_signal_lookup("restore", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
} break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_COMPLETE:
g_signal_emit_by_name (atkObj, "load_complete");
// XXX - Handle native dialog accessibles.
if (!accessible->IsRoot() && accessible->HasARIARole() &&
accessible->ARIARole() == roles::DIALOG) {
guint id = g_signal_lookup("activate", MAI_TYPE_ATK_OBJECT);
g_signal_emit(atkObj, id, 0);
}
break;
case nsIAccessibleEvent::EVENT_DOCUMENT_RELOAD:
g_signal_emit_by_name (atkObj, "reload");
break;
case nsIAccessibleEvent::EVENT_DOCUMENT_LOAD_STOPPED:
g_signal_emit_by_name (atkObj, "load_stopped");
break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_START:
atk_focus_tracker_notify(atkObj); // fire extra focus event
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, true);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, true);
break;
case nsIAccessibleEvent::EVENT_MENUPOPUP_END:
atk_object_notify_state_change(atkObj, ATK_STATE_VISIBLE, false);
atk_object_notify_state_change(atkObj, ATK_STATE_SHOWING, false);
break;
}
return NS_OK;
}
void
EventQueue::ProcessEventQueue()
{
// Process only currently queued events.
nsTArray<nsRefPtr<AccEvent> > events;
events.SwapElements(mEvents);
uint32_t eventCount = events.Length();
#ifdef A11Y_LOG
if (eventCount > 0 && logging::IsEnabled(logging::eEvents)) {
logging::MsgBegin("EVENTS", "events processing");
logging::Address("document", mDocument);
logging::MsgEnd();
}
#endif
for (uint32_t idx = 0; idx < eventCount; idx++) {
AccEvent* event = events[idx];
if (event->mEventRule != AccEvent::eDoNotEmit) {
Accessible* target = event->GetAccessible();
if (!target || target->IsDefunct())
continue;
// Dispatch the focus event if target is still focused.
if (event->mEventType == nsIAccessibleEvent::EVENT_FOCUS) {
FocusMgr()->ProcessFocusEvent(event);
continue;
}
// Dispatch caret moved and text selection change events.
if (event->mEventType == nsIAccessibleEvent::EVENT_TEXT_CARET_MOVED) {
AccCaretMoveEvent* caretMoveEvent = downcast_accEvent(event);
HyperTextAccessible* hyperText = target->AsHyperText();
if (hyperText &&
NS_SUCCEEDED(hyperText->GetCaretOffset(&caretMoveEvent->mCaretOffset))) {
nsEventShell::FireEvent(caretMoveEvent);
// There's a selection so fire selection change as well.
int32_t selectionCount;
hyperText->GetSelectionCount(&selectionCount);
if (selectionCount)
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED,
hyperText);
}
continue;
}
// Fire selected state change events in support to selection events.
if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION_ADD) {
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
true, event->mIsFromUserInput);
} else if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION_REMOVE) {
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
false, event->mIsFromUserInput);
} else if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION) {
AccSelChangeEvent* selChangeEvent = downcast_accEvent(event);
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
(selChangeEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd),
event->mIsFromUserInput);
if (selChangeEvent->mPackedEvent) {
nsEventShell::FireEvent(selChangeEvent->mPackedEvent->mAccessible,
states::SELECTED,
(selChangeEvent->mPackedEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd),
selChangeEvent->mPackedEvent->mIsFromUserInput);
}
}
nsEventShell::FireEvent(event);
// Fire text change events.
AccMutationEvent* mutationEvent = downcast_accEvent(event);
if (mutationEvent) {
if (mutationEvent->mTextChangeEvent)
nsEventShell::FireEvent(mutationEvent->mTextChangeEvent);
}
}
if (event->mEventType == nsIAccessibleEvent::EVENT_HIDE)
mDocument->ShutdownChildrenInSubtree(event->mAccessible);
if (!mDocument)
return;
}
}
void
EventQueue::ProcessEventQueue()
{
// Process only currently queued events.
nsTArray<RefPtr<AccEvent> > events;
events.SwapElements(mEvents);
uint32_t eventCount = events.Length();
#ifdef A11Y_LOG
if (eventCount > 0 && logging::IsEnabled(logging::eEvents)) {
logging::MsgBegin("EVENTS", "events processing");
logging::Address("document", mDocument);
logging::MsgEnd();
}
#endif
for (uint32_t idx = 0; idx < eventCount; idx++) {
AccEvent* event = events[idx];
if (event->mEventRule != AccEvent::eDoNotEmit) {
Accessible* target = event->GetAccessible();
if (!target || target->IsDefunct())
continue;
// Dispatch the focus event if target is still focused.
if (event->mEventType == nsIAccessibleEvent::EVENT_FOCUS) {
FocusMgr()->ProcessFocusEvent(event);
continue;
}
// Dispatch caret moved and text selection change events.
if (event->mEventType == nsIAccessibleEvent::EVENT_TEXT_SELECTION_CHANGED) {
SelectionMgr()->ProcessTextSelChangeEvent(event);
continue;
}
// Fire selected state change events in support to selection events.
if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION_ADD) {
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
true, event->mIsFromUserInput);
} else if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION_REMOVE) {
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
false, event->mIsFromUserInput);
} else if (event->mEventType == nsIAccessibleEvent::EVENT_SELECTION) {
AccSelChangeEvent* selChangeEvent = downcast_accEvent(event);
nsEventShell::FireEvent(event->mAccessible, states::SELECTED,
(selChangeEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd),
event->mIsFromUserInput);
if (selChangeEvent->mPackedEvent) {
nsEventShell::FireEvent(selChangeEvent->mPackedEvent->mAccessible,
states::SELECTED,
(selChangeEvent->mPackedEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd),
selChangeEvent->mPackedEvent->mIsFromUserInput);
}
}
nsEventShell::FireEvent(event);
}
if (!mDocument)
return;
}
}
void
NotificationController::WillRefresh(mozilla::TimeStamp aTime)
{
// If the document accessible that notification collector was created for is
// now shut down, don't process notifications anymore.
NS_ASSERTION(mDocument,
"The document was shut down while refresh observer is attached!");
if (!mDocument)
return;
// Any generic notifications should be queued if we're processing content
// insertions or generic notifications.
mObservingState = eRefreshProcessingForUpdate;
// Initial accessible tree construction.
if (!mDocument->HasLoadState(DocAccessible::eTreeConstructed)) {
// If document is not bound to parent at this point then the document is not
// ready yet (process notifications later).
if (!mDocument->IsBoundToParent()) {
mObservingState = eRefreshObserving;
return;
}
#ifdef DEBUG_NOTIFICATIONS
printf("\ninitial tree created, document: %p, document node: %p\n",
mDocument.get(), mDocument->GetDocumentNode());
#endif
mDocument->DoInitialUpdate();
NS_ASSERTION(mContentInsertions.Length() == 0,
"Pending content insertions while initial accessible tree isn't created!");
}
// Process content inserted notifications to update the tree. Process other
// notifications like DOM events and then flush event queue. If any new
// notifications are queued during this processing then they will be processed
// on next refresh. If notification processing queues up new events then they
// are processed in this refresh. If events processing queues up new events
// then new events are processed on next refresh.
// Note: notification processing or event handling may shut down the owning
// document accessible.
// Process only currently queued content inserted notifications.
nsTArray<nsRefPtr<ContentInsertion> > contentInsertions;
contentInsertions.SwapElements(mContentInsertions);
PRUint32 insertionCount = contentInsertions.Length();
for (PRUint32 idx = 0; idx < insertionCount; idx++) {
contentInsertions[idx]->Process();
if (!mDocument)
return;
}
// Process rendered text change notifications.
mTextHash.EnumerateEntries(TextEnumerator, mDocument);
mTextHash.Clear();
// Bind hanging child documents.
PRUint32 hangingDocCnt = mHangingChildDocuments.Length();
for (PRUint32 idx = 0; idx < hangingDocCnt; idx++) {
DocAccessible* childDoc = mHangingChildDocuments[idx];
if (childDoc->IsDefunct())
continue;
nsIContent* ownerContent = mDocument->GetDocumentNode()->
FindContentForSubDocument(childDoc->GetDocumentNode());
if (ownerContent) {
Accessible* outerDocAcc = mDocument->GetAccessible(ownerContent);
if (outerDocAcc && outerDocAcc->AppendChild(childDoc)) {
if (mDocument->AppendChildDocument(childDoc))
continue;
outerDocAcc->RemoveChild(childDoc);
}
// Failed to bind the child document, destroy it.
childDoc->Shutdown();
}
}
mHangingChildDocuments.Clear();
// If the document is ready and all its subdocuments are completely loaded
// then process the document load.
if (mDocument->HasLoadState(DocAccessible::eReady) &&
!mDocument->HasLoadState(DocAccessible::eCompletelyLoaded) &&
hangingDocCnt == 0) {
PRUint32 childDocCnt = mDocument->ChildDocumentCount(), childDocIdx = 0;
for (; childDocIdx < childDocCnt; childDocIdx++) {
DocAccessible* childDoc = mDocument->GetChildDocumentAt(childDocIdx);
if (!childDoc->HasLoadState(DocAccessible::eCompletelyLoaded))
break;
}
if (childDocIdx == childDocCnt) {
mDocument->ProcessLoad();
if (!mDocument)
return;
}
}
// Process only currently queued generic notifications.
nsTArray < nsRefPtr<Notification> > notifications;
notifications.SwapElements(mNotifications);
PRUint32 notificationCount = notifications.Length();
for (PRUint32 idx = 0; idx < notificationCount; idx++) {
notifications[idx]->Process();
if (!mDocument)
return;
}
// Process invalidation list of the document after all accessible tree
// modification are done.
mDocument->ProcessInvalidationList();
// If a generic notification occurs after this point then we may be allowed to
// process it synchronously.
mObservingState = eRefreshObserving;
// Process only currently queued events.
nsTArray<nsRefPtr<AccEvent> > events;
events.SwapElements(mEvents);
PRUint32 eventCount = events.Length();
for (PRUint32 idx = 0; idx < eventCount; idx++) {
AccEvent* accEvent = events[idx];
if (accEvent->mEventRule != AccEvent::eDoNotEmit) {
Accessible* target = accEvent->GetAccessible();
if (!target || target->IsDefunct())
continue;
// Dispatch the focus event if target is still focused.
if (accEvent->mEventType == nsIAccessibleEvent::EVENT_FOCUS) {
FocusMgr()->ProcessFocusEvent(accEvent);
continue;
}
mDocument->ProcessPendingEvent(accEvent);
// Fire text change event caused by tree mutation.
AccMutationEvent* showOrHideEvent = downcast_accEvent(accEvent);
if (showOrHideEvent) {
if (showOrHideEvent->mTextChangeEvent)
mDocument->ProcessPendingEvent(showOrHideEvent->mTextChangeEvent);
}
}
if (!mDocument)
return;
}
// Stop further processing if there are no new notifications of any kind or
// events and document load is processed.
if (mContentInsertions.Length() == 0 && mNotifications.Length() == 0 &&
mEvents.Length() == 0 && mTextHash.Count() == 0 &&
mHangingChildDocuments.Length() == 0 &&
mDocument->HasLoadState(DocAccessible::eCompletelyLoaded) &&
mPresShell->RemoveRefreshObserver(this, Flush_Display)) {
mObservingState = eNotObservingRefresh;
}
}