+bool Controller::BackspaceKeyEvent()
+{
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::KeyEvent %p DALI_KEY_BACKSPACE\n", this );
+
+ // IMF manager is no longer handling key-events
+ mImpl->ClearPreEditFlag();
+
+ bool removed( false );
+
+ if( EventData::SELECTING == mImpl->mEventData->mState )
+ {
+ removed = RemoveSelectedText();
+ }
+ else if( mImpl->mEventData->mPrimaryCursorPosition > 0 )
+ {
+ // Remove the character before the current cursor position
+ removed = RemoveText( -1, 1 );
+ }
+
+ if( removed )
+ {
+ DALI_LOG_INFO( gLogFilter, Debug::Verbose, "Controller::KeyEvent %p DALI_KEY_BACKSPACE RemovedText\n", this );
+ // Notifiy the IMF manager after text changed
+ // Automatic Upper-case and restarting prediction on an existing word require this.
+ NotifyImfManager();
+
+ if( 0u != mImpl->mLogicalModel->mText.Count() ||
+ !mImpl->IsPlaceholderAvailable() )
+ {
+ mImpl->QueueModifyEvent( ModifyEvent::TEXT_DELETED );
+ }
+ else
+ {
+ ShowPlaceholderText();
+ mImpl->mEventData->mUpdateCursorPosition = true;
+ }
+ }
+
+ return removed;
+}
+
+void Controller::NotifyImfManager()
+{
+ if( mImpl->mEventData )
+ {
+ if( mImpl->mEventData->mImfManager )
+ {
+ // Notifying IMF of a cursor change triggers a surrounding text request so updating it now.
+ std::string text;
+ GetText( text );
+ mImpl->mEventData->mImfManager.SetSurroundingText( text );
+
+ mImpl->mEventData->mImfManager.SetCursorPosition( GetLogicalCursorPosition() );
+ mImpl->mEventData->mImfManager.NotifyCursorPosition();
+ }
+ }
+}
+