void
TextComposition::NotityUpdateComposition(
const WidgetCompositionEvent* aCompositionEvent)
{
MOZ_RELEASE_ASSERT(!mTabParent);
nsEventStatus status;
// When compositon start, notify the rect of first offset character.
// When not compositon start, notify the rect of selected composition
// string if compositionchange event.
if (aCompositionEvent->mMessage == eCompositionStart) {
nsCOMPtr<nsIWidget> widget = mPresContext->GetRootWidget();
// Update composition start offset
WidgetQueryContentEvent selectedTextEvent(true, eQuerySelectedText, widget);
widget->DispatchEvent(&selectedTextEvent, status);
if (selectedTextEvent.mSucceeded) {
mCompositionStartOffset = selectedTextEvent.mReply.mOffset;
} else {
// Unknown offset
NS_WARNING("Cannot get start offset of IME composition");
mCompositionStartOffset = 0;
}
mCompositionTargetOffset = mCompositionStartOffset;
} else if (aCompositionEvent->CausesDOMTextEvent()) {
mCompositionTargetOffset =
mCompositionStartOffset + aCompositionEvent->TargetClauseOffset();
} else {
return;
}
NotifyIME(NOTIFY_IME_OF_COMPOSITION_UPDATE);
}
void
TextComposition::NotityUpdateComposition(WidgetGUIEvent* aEvent)
{
nsEventStatus status;
// When compositon start, notify the rect of first offset character.
// When not compositon start, notify the rect of selected composition
// string if text event.
if (aEvent->message == NS_COMPOSITION_START) {
nsCOMPtr<nsIWidget> widget = mPresContext->GetRootWidget();
// Update composition start offset
WidgetQueryContentEvent selectedTextEvent(true,
NS_QUERY_SELECTED_TEXT,
widget);
widget->DispatchEvent(&selectedTextEvent, status);
if (selectedTextEvent.mSucceeded) {
mCompositionStartOffset = selectedTextEvent.mReply.mOffset;
} else {
// Unknown offset
NS_WARNING("Cannot get start offset of IME composition");
mCompositionStartOffset = 0;
}
mCompositionTargetOffset = mCompositionStartOffset;
} else if (aEvent->mClass != eTextEventClass) {
return;
} else {
mCompositionTargetOffset =
mCompositionStartOffset + aEvent->AsTextEvent()->TargetClauseOffset();
}
NotifyIME(NOTIFY_IME_OF_COMPOSITION_UPDATE);
}
uint32_t
TextComposition::GetSelectionStartOffset()
{
nsCOMPtr<nsIWidget> widget = mPresContext->GetRootWidget();
WidgetQueryContentEvent selectedTextEvent(true, eQuerySelectedText, widget);
// Due to a bug of widget, mRanges may not be nullptr even though composition
// string is empty. So, we need to check it here for avoiding to return
// odd start offset.
if (!mLastData.IsEmpty() && mRanges && mRanges->HasClauses()) {
selectedTextEvent.InitForQuerySelectedText(
ToSelectionType(mRanges->GetFirstClause()->mRangeType));
} else {
NS_WARNING_ASSERTION(
!mLastData.IsEmpty() || !mRanges || !mRanges->HasClauses(),
"Shouldn't have empty clause info when composition string is empty");
selectedTextEvent.InitForQuerySelectedText(SelectionType::eNormal);
}
// The editor which has this composition is observed by active
// IMEContentObserver, we can use the cache of it.
RefPtr<IMEContentObserver> contentObserver =
IMEStateManager::GetActiveContentObserver();
bool doQuerySelection = true;
if (contentObserver) {
if (contentObserver->IsManaging(this)) {
doQuerySelection = false;
contentObserver->HandleQueryContentEvent(&selectedTextEvent);
}
// If another editor already has focus, we cannot retrieve selection
// in the editor which has this composition...
else if (NS_WARN_IF(contentObserver->GetPresContext() == mPresContext)) {
return 0; // XXX Is this okay?
}
}
// Otherwise, using slow path (i.e., compute every time with
// ContentEventHandler)
if (doQuerySelection) {
ContentEventHandler handler(mPresContext);
handler.HandleQueryContentEvent(&selectedTextEvent);
}
if (NS_WARN_IF(!selectedTextEvent.mSucceeded)) {
return 0; // XXX Is this okay?
}
return selectedTextEvent.mReply.mOffset;
}
void
TextComposition::NotityUpdateComposition(WidgetGUIEvent* aEvent)
{
nsEventStatus status;
// When compositon start, notify the rect of first offset character.
// When not compositon start, notify the rect of selected composition
// string if text event.
if (aEvent->message == NS_COMPOSITION_START) {
nsCOMPtr<nsIWidget> widget = mPresContext->GetRootWidget();
// Update composition start offset
WidgetQueryContentEvent selectedTextEvent(true,
NS_QUERY_SELECTED_TEXT,
widget);
widget->DispatchEvent(&selectedTextEvent, status);
if (selectedTextEvent.mSucceeded) {
mCompositionStartOffset = selectedTextEvent.mReply.mOffset;
} else {
// Unknown offset
NS_WARNING("Cannot get start offset of IME composition");
mCompositionStartOffset = 0;
}
mCompositionTargetOffset = mCompositionStartOffset;
} else if (aEvent->eventStructType != NS_TEXT_EVENT) {
return;
} else {
WidgetTextEvent* textEvent = aEvent->AsTextEvent();
mCompositionTargetOffset = mCompositionStartOffset;
for (uint32_t i = 0; i < textEvent->rangeCount; i++) {
TextRange& range = textEvent->rangeArray[i];
if (range.mRangeType == NS_TEXTRANGE_SELECTEDRAWTEXT ||
range.mRangeType == NS_TEXTRANGE_SELECTEDCONVERTEDTEXT) {
mCompositionTargetOffset += range.mStartOffset;
break;
}
}
}
NotifyIME(widget::NotificationToIME::NOTIFY_IME_OF_COMPOSITION_UPDATE);
}
