mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
666207270c
The set of events fired to platform accessibility is not the same as the set in the event queue. Therefore we should forward events to the parent process someplace where they are the same so the same events can be emitted for child processes.
561 lines
21 KiB
C++
561 lines
21 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "EventQueue.h"
|
|
|
|
#include "Accessible-inl.h"
|
|
#include "nsEventShell.h"
|
|
#include "DocAccessible.h"
|
|
#include "DocAccessibleChild.h"
|
|
#include "nsAccessibilityService.h"
|
|
#include "nsTextEquivUtils.h"
|
|
#ifdef A11Y_LOG
|
|
#include "Logging.h"
|
|
#endif
|
|
|
|
using namespace mozilla;
|
|
using namespace mozilla::a11y;
|
|
|
|
// Defines the number of selection add/remove events in the queue when they
|
|
// aren't packed into single selection within event.
|
|
const unsigned int kSelChangeCountToPack = 5;
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// EventQueue
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
bool
|
|
EventQueue::PushEvent(AccEvent* aEvent)
|
|
{
|
|
NS_ASSERTION((aEvent->mAccessible && aEvent->mAccessible->IsApplication()) ||
|
|
aEvent->GetDocAccessible() == mDocument,
|
|
"Queued event belongs to another document!");
|
|
|
|
if (!mEvents.AppendElement(aEvent))
|
|
return false;
|
|
|
|
// Filter events.
|
|
CoalesceEvents();
|
|
|
|
// Fire name change event on parent given that this event hasn't been
|
|
// coalesced, the parent's name was calculated from its subtree, and the
|
|
// subtree was changed.
|
|
Accessible* target = aEvent->mAccessible;
|
|
if (aEvent->mEventRule != AccEvent::eDoNotEmit &&
|
|
target->HasNameDependentParent() &&
|
|
(aEvent->mEventType == nsIAccessibleEvent::EVENT_NAME_CHANGE ||
|
|
aEvent->mEventType == nsIAccessibleEvent::EVENT_TEXT_REMOVED ||
|
|
aEvent->mEventType == nsIAccessibleEvent::EVENT_TEXT_INSERTED ||
|
|
aEvent->mEventType == nsIAccessibleEvent::EVENT_SHOW ||
|
|
aEvent->mEventType == nsIAccessibleEvent::EVENT_HIDE)) {
|
|
// Only continue traversing up the tree if it's possible that the parent
|
|
// accessible's name can depend on this accessible's name.
|
|
Accessible* parent = target->Parent();
|
|
while (parent &&
|
|
nsTextEquivUtils::HasNameRule(parent, eNameFromSubtreeIfReqRule)) {
|
|
// Test possible name dependent parent.
|
|
if (nsTextEquivUtils::HasNameRule(parent, eNameFromSubtreeRule)) {
|
|
nsAutoString name;
|
|
ENameValueFlag nameFlag = parent->Name(name);
|
|
// If name is obtained from subtree, fire name change event.
|
|
if (nameFlag == eNameFromSubtree) {
|
|
nsRefPtr<AccEvent> nameChangeEvent =
|
|
new AccEvent(nsIAccessibleEvent::EVENT_NAME_CHANGE, parent);
|
|
PushEvent(nameChangeEvent);
|
|
}
|
|
break;
|
|
}
|
|
parent = parent->Parent();
|
|
}
|
|
}
|
|
|
|
// Associate text change with hide event if it wasn't stolen from hiding
|
|
// siblings during coalescence.
|
|
AccMutationEvent* showOrHideEvent = downcast_accEvent(aEvent);
|
|
if (showOrHideEvent && !showOrHideEvent->mTextChangeEvent)
|
|
CreateTextChangeEventFor(showOrHideEvent);
|
|
|
|
return true;
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// EventQueue: private
|
|
|
|
void
|
|
EventQueue::CoalesceEvents()
|
|
{
|
|
NS_ASSERTION(mEvents.Length(), "There should be at least one pending event!");
|
|
uint32_t tail = mEvents.Length() - 1;
|
|
AccEvent* tailEvent = mEvents[tail];
|
|
|
|
switch(tailEvent->mEventRule) {
|
|
case AccEvent::eCoalesceReorder:
|
|
CoalesceReorderEvents(tailEvent);
|
|
break; // case eCoalesceReorder
|
|
|
|
case AccEvent::eCoalesceMutationTextChange:
|
|
{
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* thisEvent = mEvents[index];
|
|
if (thisEvent->mEventRule != tailEvent->mEventRule)
|
|
continue;
|
|
|
|
// We don't currently coalesce text change events from show/hide events.
|
|
if (thisEvent->mEventType != tailEvent->mEventType)
|
|
continue;
|
|
|
|
// Show events may be duped because of reinsertion (removal is ignored
|
|
// because initial insertion is not processed). Ignore initial
|
|
// insertion.
|
|
if (thisEvent->mAccessible == tailEvent->mAccessible)
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
|
|
AccMutationEvent* tailMutationEvent = downcast_accEvent(tailEvent);
|
|
AccMutationEvent* thisMutationEvent = downcast_accEvent(thisEvent);
|
|
if (tailMutationEvent->mParent != thisMutationEvent->mParent)
|
|
continue;
|
|
|
|
// Coalesce text change events for hide and show events.
|
|
if (thisMutationEvent->IsHide()) {
|
|
AccHideEvent* tailHideEvent = downcast_accEvent(tailEvent);
|
|
AccHideEvent* thisHideEvent = downcast_accEvent(thisEvent);
|
|
CoalesceTextChangeEventsFor(tailHideEvent, thisHideEvent);
|
|
break;
|
|
}
|
|
|
|
AccShowEvent* tailShowEvent = downcast_accEvent(tailEvent);
|
|
AccShowEvent* thisShowEvent = downcast_accEvent(thisEvent);
|
|
CoalesceTextChangeEventsFor(tailShowEvent, thisShowEvent);
|
|
break;
|
|
}
|
|
} break; // case eCoalesceMutationTextChange
|
|
|
|
case AccEvent::eCoalesceOfSameType:
|
|
{
|
|
// Coalesce old events by newer event.
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* accEvent = mEvents[index];
|
|
if (accEvent->mEventType == tailEvent->mEventType &&
|
|
accEvent->mEventRule == tailEvent->mEventRule) {
|
|
accEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
return;
|
|
}
|
|
}
|
|
} break; // case eCoalesceOfSameType
|
|
|
|
case AccEvent::eCoalesceSelectionChange:
|
|
{
|
|
AccSelChangeEvent* tailSelChangeEvent = downcast_accEvent(tailEvent);
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* thisEvent = mEvents[index];
|
|
if (thisEvent->mEventRule == tailEvent->mEventRule) {
|
|
AccSelChangeEvent* thisSelChangeEvent =
|
|
downcast_accEvent(thisEvent);
|
|
|
|
// Coalesce selection change events within same control.
|
|
if (tailSelChangeEvent->mWidget == thisSelChangeEvent->mWidget) {
|
|
CoalesceSelChangeEvents(tailSelChangeEvent, thisSelChangeEvent, index);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
} break; // eCoalesceSelectionChange
|
|
|
|
case AccEvent::eCoalesceStateChange:
|
|
{
|
|
// If state change event is duped then ignore previous event. If state
|
|
// change event is opposite to previous event then no event is emitted
|
|
// (accessible state wasn't changed).
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* thisEvent = mEvents[index];
|
|
if (thisEvent->mEventRule != AccEvent::eDoNotEmit &&
|
|
thisEvent->mEventType == tailEvent->mEventType &&
|
|
thisEvent->mAccessible == tailEvent->mAccessible) {
|
|
AccStateChangeEvent* thisSCEvent = downcast_accEvent(thisEvent);
|
|
AccStateChangeEvent* tailSCEvent = downcast_accEvent(tailEvent);
|
|
if (thisSCEvent->mState == tailSCEvent->mState) {
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
if (thisSCEvent->mIsEnabled != tailSCEvent->mIsEnabled)
|
|
tailEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
}
|
|
}
|
|
}
|
|
break; // eCoalesceStateChange
|
|
}
|
|
|
|
case AccEvent::eCoalesceTextSelChange:
|
|
{
|
|
// Coalesce older event by newer event for the same selection or target.
|
|
// Events for same selection may have different targets and vice versa one
|
|
// target may be pointed by different selections (for latter see
|
|
// bug 927159).
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* thisEvent = mEvents[index];
|
|
if (thisEvent->mEventRule != AccEvent::eDoNotEmit &&
|
|
thisEvent->mEventType == tailEvent->mEventType) {
|
|
AccTextSelChangeEvent* thisTSCEvent = downcast_accEvent(thisEvent);
|
|
AccTextSelChangeEvent* tailTSCEvent = downcast_accEvent(tailEvent);
|
|
if (thisTSCEvent->mSel == tailTSCEvent->mSel ||
|
|
thisEvent->mAccessible == tailEvent->mAccessible)
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
}
|
|
|
|
}
|
|
} break; // eCoalesceTextSelChange
|
|
|
|
case AccEvent::eRemoveDupes:
|
|
{
|
|
// Check for repeat events, coalesce newly appended event by more older
|
|
// event.
|
|
for (uint32_t index = tail - 1; index < tail; index--) {
|
|
AccEvent* accEvent = mEvents[index];
|
|
if (accEvent->mEventType == tailEvent->mEventType &&
|
|
accEvent->mEventRule == tailEvent->mEventRule &&
|
|
accEvent->mAccessible == tailEvent->mAccessible) {
|
|
tailEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
return;
|
|
}
|
|
}
|
|
} break; // case eRemoveDupes
|
|
|
|
default:
|
|
break; // case eAllowDupes, eDoNotEmit
|
|
} // switch
|
|
}
|
|
|
|
void
|
|
EventQueue::CoalesceReorderEvents(AccEvent* aTailEvent)
|
|
{
|
|
uint32_t count = mEvents.Length();
|
|
for (uint32_t index = count - 2; index < count; index--) {
|
|
AccEvent* thisEvent = mEvents[index];
|
|
|
|
// Skip events of different types and targeted to application accessible.
|
|
if (thisEvent->mEventType != aTailEvent->mEventType ||
|
|
thisEvent->mAccessible->IsApplication())
|
|
continue;
|
|
|
|
// If thisEvent target is not in document longer, i.e. if it was
|
|
// removed from the tree then do not emit the event.
|
|
if (!thisEvent->mAccessible->IsDoc() &&
|
|
!thisEvent->mAccessible->IsInDocument()) {
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
continue;
|
|
}
|
|
|
|
// Coalesce earlier event of the same target.
|
|
if (thisEvent->mAccessible == aTailEvent->mAccessible) {
|
|
if (thisEvent->mEventRule == AccEvent::eDoNotEmit) {
|
|
AccReorderEvent* tailReorder = downcast_accEvent(aTailEvent);
|
|
tailReorder->DoNotEmitAll();
|
|
} else {
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// If tailEvent contains thisEvent
|
|
// then
|
|
// if show or hide of tailEvent contains a grand parent of thisEvent
|
|
// then ignore thisEvent and its show and hide events
|
|
// otherwise ignore thisEvent but not its show and hide events
|
|
Accessible* thisParent = thisEvent->mAccessible;
|
|
while (thisParent && thisParent != mDocument) {
|
|
if (thisParent->Parent() == aTailEvent->mAccessible) {
|
|
AccReorderEvent* tailReorder = downcast_accEvent(aTailEvent);
|
|
uint32_t eventType = tailReorder->IsShowHideEventTarget(thisParent);
|
|
|
|
// Sometimes InvalidateChildren() and
|
|
// DocAccessible::CacheChildrenInSubtree() can conspire to reparent an
|
|
// accessible in this case no need for mutation events. Se bug 883708
|
|
// for details.
|
|
if (eventType == nsIAccessibleEvent::EVENT_SHOW ||
|
|
eventType == nsIAccessibleEvent::EVENT_HIDE) {
|
|
AccReorderEvent* thisReorder = downcast_accEvent(thisEvent);
|
|
thisReorder->DoNotEmitAll();
|
|
} else {
|
|
thisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
thisParent = thisParent->Parent();
|
|
}
|
|
|
|
// If tailEvent is contained by thisEvent
|
|
// then
|
|
// if show of thisEvent contains the tailEvent
|
|
// then ignore tailEvent
|
|
// if hide of thisEvent contains the tailEvent
|
|
// then assert
|
|
// otherwise ignore tailEvent but not its show and hide events
|
|
Accessible* tailParent = aTailEvent->mAccessible;
|
|
while (tailParent && tailParent != mDocument) {
|
|
if (tailParent->Parent() == thisEvent->mAccessible) {
|
|
AccReorderEvent* thisReorder = downcast_accEvent(thisEvent);
|
|
AccReorderEvent* tailReorder = downcast_accEvent(aTailEvent);
|
|
uint32_t eventType = thisReorder->IsShowHideEventTarget(tailParent);
|
|
if (eventType == nsIAccessibleEvent::EVENT_SHOW)
|
|
tailReorder->DoNotEmitAll();
|
|
else if (eventType == nsIAccessibleEvent::EVENT_HIDE)
|
|
NS_ERROR("Accessible tree was modified after it was removed! Huh?");
|
|
else
|
|
aTailEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
|
|
return;
|
|
}
|
|
|
|
tailParent = tailParent->Parent();
|
|
}
|
|
|
|
} // for (index)
|
|
}
|
|
|
|
void
|
|
EventQueue::CoalesceSelChangeEvents(AccSelChangeEvent* aTailEvent,
|
|
AccSelChangeEvent* aThisEvent,
|
|
uint32_t aThisIndex)
|
|
{
|
|
aTailEvent->mPreceedingCount = aThisEvent->mPreceedingCount + 1;
|
|
|
|
// Pack all preceding events into single selection within event
|
|
// when we receive too much selection add/remove events.
|
|
if (aTailEvent->mPreceedingCount >= kSelChangeCountToPack) {
|
|
aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION_WITHIN;
|
|
aTailEvent->mAccessible = aTailEvent->mWidget;
|
|
aThisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
|
|
// Do not emit any preceding selection events for same widget if they
|
|
// weren't coalesced yet.
|
|
if (aThisEvent->mEventType != nsIAccessibleEvent::EVENT_SELECTION_WITHIN) {
|
|
for (uint32_t jdx = aThisIndex - 1; jdx < aThisIndex; jdx--) {
|
|
AccEvent* prevEvent = mEvents[jdx];
|
|
if (prevEvent->mEventRule == aTailEvent->mEventRule) {
|
|
AccSelChangeEvent* prevSelChangeEvent =
|
|
downcast_accEvent(prevEvent);
|
|
if (prevSelChangeEvent->mWidget == aTailEvent->mWidget)
|
|
prevSelChangeEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
}
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
// Pack sequential selection remove and selection add events into
|
|
// single selection change event.
|
|
if (aTailEvent->mPreceedingCount == 1 &&
|
|
aTailEvent->mItem != aThisEvent->mItem) {
|
|
if (aTailEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd &&
|
|
aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionRemove) {
|
|
aThisEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION;
|
|
aTailEvent->mPackedEvent = aThisEvent;
|
|
return;
|
|
}
|
|
|
|
if (aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd &&
|
|
aTailEvent->mSelChangeType == AccSelChangeEvent::eSelectionRemove) {
|
|
aTailEvent->mEventRule = AccEvent::eDoNotEmit;
|
|
aThisEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION;
|
|
aThisEvent->mPackedEvent = aTailEvent;
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Unpack the packed selection change event because we've got one
|
|
// more selection add/remove.
|
|
if (aThisEvent->mEventType == nsIAccessibleEvent::EVENT_SELECTION) {
|
|
if (aThisEvent->mPackedEvent) {
|
|
aThisEvent->mPackedEvent->mEventType =
|
|
aThisEvent->mPackedEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd ?
|
|
nsIAccessibleEvent::EVENT_SELECTION_ADD :
|
|
nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
|
|
|
|
aThisEvent->mPackedEvent->mEventRule =
|
|
AccEvent::eCoalesceSelectionChange;
|
|
|
|
aThisEvent->mPackedEvent = nullptr;
|
|
}
|
|
|
|
aThisEvent->mEventType =
|
|
aThisEvent->mSelChangeType == AccSelChangeEvent::eSelectionAdd ?
|
|
nsIAccessibleEvent::EVENT_SELECTION_ADD :
|
|
nsIAccessibleEvent::EVENT_SELECTION_REMOVE;
|
|
|
|
return;
|
|
}
|
|
|
|
// Convert into selection add since control has single selection but other
|
|
// selection events for this control are queued.
|
|
if (aTailEvent->mEventType == nsIAccessibleEvent::EVENT_SELECTION)
|
|
aTailEvent->mEventType = nsIAccessibleEvent::EVENT_SELECTION_ADD;
|
|
}
|
|
|
|
void
|
|
EventQueue::CoalesceTextChangeEventsFor(AccHideEvent* aTailEvent,
|
|
AccHideEvent* aThisEvent)
|
|
{
|
|
// XXX: we need a way to ignore SplitNode and JoinNode() when they do not
|
|
// affect the text within the hypertext.
|
|
|
|
AccTextChangeEvent* textEvent = aThisEvent->mTextChangeEvent;
|
|
if (!textEvent)
|
|
return;
|
|
|
|
if (aThisEvent->mNextSibling == aTailEvent->mAccessible) {
|
|
aTailEvent->mAccessible->AppendTextTo(textEvent->mModifiedText);
|
|
|
|
} else if (aThisEvent->mPrevSibling == aTailEvent->mAccessible) {
|
|
uint32_t oldLen = textEvent->GetLength();
|
|
aTailEvent->mAccessible->AppendTextTo(textEvent->mModifiedText);
|
|
textEvent->mStart -= textEvent->GetLength() - oldLen;
|
|
}
|
|
|
|
aTailEvent->mTextChangeEvent.swap(aThisEvent->mTextChangeEvent);
|
|
}
|
|
|
|
void
|
|
EventQueue::CoalesceTextChangeEventsFor(AccShowEvent* aTailEvent,
|
|
AccShowEvent* aThisEvent)
|
|
{
|
|
AccTextChangeEvent* textEvent = aThisEvent->mTextChangeEvent;
|
|
if (!textEvent)
|
|
return;
|
|
|
|
if (aTailEvent->mAccessible->IndexInParent() ==
|
|
aThisEvent->mAccessible->IndexInParent() + 1) {
|
|
// If tail target was inserted after this target, i.e. tail target is next
|
|
// sibling of this target.
|
|
aTailEvent->mAccessible->AppendTextTo(textEvent->mModifiedText);
|
|
|
|
} else if (aTailEvent->mAccessible->IndexInParent() ==
|
|
aThisEvent->mAccessible->IndexInParent() -1) {
|
|
// If tail target was inserted before this target, i.e. tail target is
|
|
// previous sibling of this target.
|
|
nsAutoString startText;
|
|
aTailEvent->mAccessible->AppendTextTo(startText);
|
|
textEvent->mModifiedText = startText + textEvent->mModifiedText;
|
|
textEvent->mStart -= startText.Length();
|
|
}
|
|
|
|
aTailEvent->mTextChangeEvent.swap(aThisEvent->mTextChangeEvent);
|
|
}
|
|
|
|
void
|
|
EventQueue::CreateTextChangeEventFor(AccMutationEvent* aEvent)
|
|
{
|
|
Accessible* container = aEvent->mAccessible->Parent();
|
|
if (!container)
|
|
return;
|
|
|
|
HyperTextAccessible* textAccessible = container->AsHyperText();
|
|
if (!textAccessible)
|
|
return;
|
|
|
|
// Don't fire event for the first html:br in an editor.
|
|
if (aEvent->mAccessible->Role() == roles::WHITESPACE) {
|
|
nsCOMPtr<nsIEditor> editor = textAccessible->GetEditor();
|
|
if (editor) {
|
|
bool isEmpty = false;
|
|
editor->GetDocumentIsEmpty(&isEmpty);
|
|
if (isEmpty)
|
|
return;
|
|
}
|
|
}
|
|
|
|
int32_t offset = textAccessible->GetChildOffset(aEvent->mAccessible);
|
|
|
|
nsAutoString text;
|
|
aEvent->mAccessible->AppendTextTo(text);
|
|
if (text.IsEmpty())
|
|
return;
|
|
|
|
aEvent->mTextChangeEvent =
|
|
new AccTextChangeEvent(textAccessible, offset, text, aEvent->IsShow(),
|
|
aEvent->mIsFromUserInput ? eFromUserInput : eNoUserInput);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// EventQueue: event queue
|
|
|
|
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_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);
|
|
|
|
// 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;
|
|
}
|
|
}
|