bool InputMethodController::confirmCompositionOrInsertText(const String& text, ConfirmCompositionBehavior confirmBehavior)
{
if (!hasComposition()) {
if (!text.length())
return false;
editor().insertText(text, 0);
return true;
}
if (text.length()) {
confirmComposition(text);
return true;
}
if (confirmBehavior == DoNotKeepSelection)
return confirmComposition(composingText(), DoNotKeepSelection);
SelectionOffsetsScope selectionOffsetsScope(this);
return confirmComposition();
}
bool InputMethodController::confirmComposition(const String& text, ConfirmCompositionBehavior confirmBehavior)
{
if (!hasComposition())
return false;
Optional<Editor::RevealSelectionScope> revealSelectionScope;
if (confirmBehavior == KeepSelection)
revealSelectionScope.emplace(&editor());
// If the composition was set from existing text and didn't change, then
// there's nothing to do here (and we should avoid doing anything as that
// may clobber multi-node styled text).
if (!m_isDirty && composingText() == text) {
clear();
return true;
}
// Select the text that will be deleted or replaced.
selectComposition();
if (frame().selection().isNone())
return false;
dispatchCompositionEndEvent(frame(), text);
if (!frame().document())
return false;
// If text is empty, then delete the old composition here. If text is
// non-empty, InsertTextCommand::input will delete the old composition with
// an optimized replace operation.
if (text.isEmpty())
TypingCommand::deleteSelection(*frame().document(), 0);
clear();
insertTextForConfirmedComposition(text);
return true;
}
bool InputMethodController::confirmComposition()
{
return confirmComposition(composingText());
}