12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667 |
- // Copyright (c) 2012 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #include "ui/events/event_handler.h"
- #include "base/logging.h"
- #include "base/strings/string_util.h"
- #include "ui/events/event.h"
- #include "ui/events/event_dispatcher.h"
- namespace ui {
- EventHandler::EventHandler() = default;
- EventHandler::~EventHandler() {
- while (!dispatchers_.empty()) {
- EventDispatcher* dispatcher = dispatchers_.top();
- dispatchers_.pop();
- dispatcher->OnHandlerDestroyed(this);
- }
- }
- void EventHandler::OnEvent(Event* event) {
- // You may uncomment the following line if more detailed logging is necessary
- // for diagnosing event processing. This code is a critical path and the added
- // overhead from the logging can introduce other issues. Please do not commit
- // with the following line commented without first discussing with OWNERs.
- // See crbug/1210633 for details.
- // VLOG(5) << GetLogContext() << "::OnEvent(" << event->ToString() << ")";
- if (event->IsKeyEvent())
- OnKeyEvent(event->AsKeyEvent());
- else if (event->IsMouseEvent())
- OnMouseEvent(event->AsMouseEvent());
- else if (event->IsScrollEvent())
- OnScrollEvent(event->AsScrollEvent());
- else if (event->IsTouchEvent())
- OnTouchEvent(event->AsTouchEvent());
- else if (event->IsGestureEvent())
- OnGestureEvent(event->AsGestureEvent());
- else if (event->IsCancelModeEvent())
- OnCancelMode(event->AsCancelModeEvent());
- }
- void EventHandler::OnKeyEvent(KeyEvent* event) {
- }
- void EventHandler::OnMouseEvent(MouseEvent* event) {
- }
- void EventHandler::OnScrollEvent(ScrollEvent* event) {
- }
- void EventHandler::OnTouchEvent(TouchEvent* event) {
- }
- void EventHandler::OnGestureEvent(GestureEvent* event) {
- }
- void EventHandler::OnCancelMode(CancelModeEvent* event) {
- }
- base::StringPiece EventHandler::GetLogContext() const {
- return "(Unknown EventHandler)"; // Please override
- }
- } // namespace ui
|