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/*
* Copyright (c) 2009-2010 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.system;
/**
* The <code>ContextListener> provides a means for an application
* to receive events relating to a context.
*/
public interface SystemListener {
/**
* Callback to indicate the application to initialize. This method
* is called in the GL/Rendering thread so any GL-dependent resources
* can be initialized.
*/
public void initialize();
/**
* Called to notify the application that the resolution has changed.
* @param width
* @param height
*/
public void reshape(int width, int height);
/**
* Callback to update the application state, and render the scene
* to the back buffer.
*/
public void update();
/**
* Called when the user requests to close the application. This
* could happen when he clicks the X button on the window, presses
* the Alt-F4 combination, attempts to shutdown the process from
* the task manager, or presses ESC.
* @param esc If true, the user pressed ESC to close the application.
*/
public void requestClose(boolean esc);
/**
* Called when the application gained focus. The display
* implementation is not allowed to call this method before
* initialize() has been called or after destroy() has been called.
*/
public void gainFocus();
/**
* Called when the application lost focus. The display
* implementation is not allowed to call this method before
* initialize() has been called or after destroy() has been called.
*/
public void loseFocus();
/**
* Called when an error has occured. This is typically
* invoked when an uncought exception is thrown in the render thread.
* @param errorMsg The error message, if any, or null.
* @param t Throwable object, or null.
*/
public void handleError(String errorMsg, Throwable t);
/**
* Callback to indicate that the context has been destroyed (either
* by the user or requested by the application itself). Typically
* cleanup of native resources should happen here. This method is called
* in the GL/Rendering thread.
*/
public void destroy();
}
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