mirror of https://github.com/axmolengine/axmol.git
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
/****************************************************************************
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Copyright (c) 2013 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#ifndef cocos2d_libs_EventListener_h
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#define cocos2d_libs_EventListener_h
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#include "CCPlatformMacros.h"
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#include "CCObject.h"
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#include <functional>
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#include <string>
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#include <memory>
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#include <set>
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NS_CC_BEGIN
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class Event;
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class Node;
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/**
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* The base class of event listener.
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* If you need custom listener which with different callback, you need to inherit this class.
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* For instance, you could refer to EventListenerAcceleration, EventListenerKeyboard, EventListenerTouchOneByOne, EventListenerCustom.
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*/
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class EventListener : public Object
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{
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protected:
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/** Constructor */
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EventListener();
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/** Initializes event with type and callback function */
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bool init(const std::string& t, std::function<void(Event*)>callback);
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public:
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/** Destructor */
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virtual ~EventListener();
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/** Checks whether the listener is available. */
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virtual bool checkAvailable() = 0;
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/** Clones the listener, its subclasses have to override this method. */
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virtual EventListener* clone() = 0;
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inline bool isPaused() const { return _paused; };
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inline bool isRegistered() const { return _isRegistered; };
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protected:
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std::function<void(Event*)> _onEvent; /// Event callback function
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std::string _type; /// Event type
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bool _isRegistered; /// Whether the listener has been added to dispatcher.
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// The priority of event listener
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int _fixedPriority; // The higher the number, the higher the priority, 0 is for scene graph base priority.
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Node* _node; // scene graph based priority
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bool _paused;
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private:
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friend class EventDispatcher;
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};
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NS_CC_END
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#endif
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