ui/base/events/event_handler.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/events/event_dispatcher.h"
   6 #include "ui/base/events/event_handler.h"
   7
   8 #include "ui/base/events/event.h"
   9
  10 namespace ui {
  11
  12 EventHandler::EventHandler() {
  13 }
  14
  15 EventHandler::~EventHandler() {
  16   while (!dispatchers_.empty()) {
  17     EventDispatcher* dispatcher = dispatchers_.top();
  18     dispatchers_.pop();
  19     dispatcher->OnHandlerDestroyed(this);
  20   }
  21 }
  22
  23 void EventHandler::OnEvent(Event* event) {
  24   if (event->IsKeyEvent())
  25     OnKeyEvent(static_cast<KeyEvent*>(event));
  26   else if (event->IsMouseEvent())
  27     OnMouseEvent(static_cast<MouseEvent*>(event));
  28   else if (event->IsScrollEvent())
  29     OnScrollEvent(static_cast<ScrollEvent*>(event));
  30   else if (event->IsTouchEvent())
  31     OnTouchEvent(static_cast<TouchEvent*>(event));
  32   else if (event->IsGestureEvent())
  33     OnGestureEvent(static_cast<GestureEvent*>(event));
  34 }
  35
  36 void EventHandler::OnKeyEvent(KeyEvent* event) {
  37 }
  38
  39 void EventHandler::OnMouseEvent(MouseEvent* event) {
  40 }
  41
  42 void EventHandler::OnScrollEvent(ScrollEvent* event) {
  43 }
  44
  45 void EventHandler::OnTouchEvent(TouchEvent* event) {
  46 }
  47
  48 void EventHandler::OnGestureEvent(GestureEvent* event) {
  49 }
  50
  51 }  // namespace ui