/**
* Copyright 2010 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.waveprotocol.wave.client.widget.button;
/**
* Simplified (compared to the GWT version) listener interface for mouse events -
* this interface doesn't depend on GWT.
*
*/
public interface MouseListener {
/**
* A {@link MouseListener} that does nothing when it receives events.
*/
public static final MouseListener NO_OP = new MouseListener() {
@Override
public void onMouseUp() { }
@Override
public void onMouseLeave() { }
@Override
public void onMouseEnter() { }
@Override
public void onMouseDown() { }
@Override
public void onClick() { }
};
/**
* Called when the mouse is pressed over some widget.
*/
void onMouseDown();
/**
* Called when the mouse enters some widget.
*/
void onMouseEnter();
/**
* Called when the mouse leaves some widget.
*/
void onMouseLeave();
/**
* Called when the mouse is released over some widget.
*/
void onMouseUp();
/**
* Called when the mouse is clicked.
*/
void onClick();
}