| /* |
| * Copyright 2008 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.dom.client.Element; |
| import com.google.gwt.user.client.DOM; |
| import com.google.gwt.user.client.Event; |
| import com.google.gwt.user.client.Window; |
| |
| import java.util.ArrayList; |
| |
| /** |
| * A helper class for implementers of the SourcesMouseEvents interface. This |
| * subclass of {@link ArrayList} assumes that all objects added to it will be of |
| * type {@link com.google.gwt.user.client.ui.MouseListener}. |
| * |
| * @deprecated Widgets should now manage their own handlers via {@link Widget#addDomHandler} |
| */ |
| @Deprecated |
| public class MouseListenerCollection extends ArrayList<MouseListener> { |
| |
| /** |
| * Fires a mouse down event to all listeners. |
| * |
| * @param sender the widget sending the event |
| * @param x the x coordinate of the mouse |
| * @param y the y coordinate of the mouse |
| */ |
| public void fireMouseDown(Widget sender, int x, int y) { |
| for (MouseListener listener : this) { |
| listener.onMouseDown(sender, x, y); |
| } |
| } |
| |
| /** |
| * Fires a mouse enter event to all listeners. |
| * |
| * @param sender the widget sending the event |
| */ |
| public void fireMouseEnter(Widget sender) { |
| for (MouseListener listener : this) { |
| listener.onMouseEnter(sender); |
| } |
| } |
| |
| /** |
| * 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 fireMouseEvent(Widget sender, Event event) { |
| final Element senderElem = sender.getElement(); |
| int x = event.getClientX() - senderElem.getAbsoluteLeft() |
| + senderElem.getPropertyInt("scrollLeft") |
| + Window.getScrollLeft(); |
| int y = event.getClientY() - senderElem.getAbsoluteTop() |
| + senderElem.getPropertyInt("scrollTop") |
| + Window.getScrollTop(); |
| |
| switch (DOM.eventGetType(event)) { |
| case Event.ONMOUSEDOWN: |
| fireMouseDown(sender, x, y); |
| break; |
| case Event.ONMOUSEUP: |
| fireMouseUp(sender, x, y); |
| break; |
| case Event.ONMOUSEMOVE: |
| fireMouseMove(sender, x, y); |
| break; |
| case Event.ONMOUSEOVER: |
| // Only fire the mouseEnter event if it's coming from outside this |
| // widget. |
| Element from = DOM.eventGetFromElement(event); |
| if (from == null || !senderElem.isOrHasChild(from)) { |
| fireMouseEnter(sender); |
| } |
| break; |
| case Event.ONMOUSEOUT: |
| // Only fire the mouseLeave event if it's actually leaving this |
| // widget. |
| Element to = DOM.eventGetToElement(event); |
| if (to == null || !senderElem.isOrHasChild(to)) { |
| fireMouseLeave(sender); |
| } |
| break; |
| } |
| } |
| |
| /** |
| * Fires a mouse leave event to all listeners. |
| * |
| * @param sender the widget sending the event |
| */ |
| public void fireMouseLeave(Widget sender) { |
| for (MouseListener listener : this) { |
| listener.onMouseLeave(sender); |
| } |
| } |
| |
| /** |
| * Fires a mouse move event to all listeners. |
| * |
| * @param sender the widget sending the event |
| * @param x the x coordinate of the mouse |
| * @param y the y coordinate of the mouse |
| */ |
| public void fireMouseMove(Widget sender, int x, int y) { |
| for (MouseListener listener : this) { |
| listener.onMouseMove(sender, x, y); |
| } |
| } |
| |
| /** |
| * Fires a mouse up event to all listeners. |
| * |
| * @param sender the widget sending the event |
| * @param x the x coordinate of the mouse |
| * @param y the y coordinate of the mouse |
| */ |
| public void fireMouseUp(Widget sender, int x, int y) { |
| for (MouseListener listener : this) { |
| listener.onMouseUp(sender, x, y); |
| } |
| } |
| } |