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/events/event_handler.h" 6 7 #include "ui/events/event.h" 8 #include "ui/events/event_dispatcher.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 // TODO(tdanderson): Encapsulate static_casts in ui::Event for all 25 // event types. 26 if (event->IsKeyEvent()) 27 OnKeyEvent(static_cast<KeyEvent*>(event)); 28 else if (event->IsMouseEvent()) 29 OnMouseEvent(static_cast<MouseEvent*>(event)); 30 else if (event->IsScrollEvent()) 31 OnScrollEvent(static_cast<ScrollEvent*>(event)); 32 else if (event->IsTouchEvent()) 33 OnTouchEvent(static_cast<TouchEvent*>(event)); 34 else if (event->IsGestureEvent()) 35 OnGestureEvent(event->AsGestureEvent()); 36 else if (event->type() == ET_CANCEL_MODE) 37 OnCancelMode(static_cast<CancelModeEvent*>(event)); 38 } 39 40 void EventHandler::OnKeyEvent(KeyEvent* event) { 41 } 42 43 void EventHandler::OnMouseEvent(MouseEvent* event) { 44 } 45 46 void EventHandler::OnScrollEvent(ScrollEvent* event) { 47 } 48 49 void EventHandler::OnTouchEvent(TouchEvent* event) { 50 } 51 52 void EventHandler::OnGestureEvent(GestureEvent* event) { 53 } 54 55 void EventHandler::OnCancelMode(CancelModeEvent* event) { 56 } 57 58 } // namespace ui 59
