com.google.gwt.user.client.ui.MouseWheelListenerCollection Maven / Gradle / Ivy
/*
* Copyright 2007 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 com.google.gwt.user.client.ui;
import com.google.gwt.user.client.DOM;
import com.google.gwt.user.client.Event;
import java.util.ArrayList;
/**
* A helper class for implementers of the SourcesMouseWheelEvents interface.
* This subclass of {@link ArrayList} assumes that all objects added to it will
* be of type {@link com.google.gwt.user.client.ui.MouseWheelListener}.
*
* @deprecated Widgets should now manage their own handlers via {@link Widget#addDomHandler}
*/
@Deprecated
public class MouseWheelListenerCollection extends ArrayList {
/**
* Fires a mouse wheel event to all listeners.
*
* @param sender the widget sending the event
* @param velocity the velocity information for the event
*/
public void fireMouseWheel(Widget sender, MouseWheelVelocity velocity) {
for (MouseWheelListener listener : this) {
listener.onMouseWheel(sender, velocity);
}
}
/**
* A helper for widgets that source mouse events.
*
* @param sender the widget sending the event
* @param event the {@link Event} received by the widget
*/
public void fireMouseWheelEvent(Widget sender, Event event) {
if (DOM.eventGetType(event) == Event.ONMOUSEWHEEL) {
MouseWheelVelocity velocity = new MouseWheelVelocity(event);
fireMouseWheel(sender, velocity);
}
}
}