Java tutorial
/******************************************************************************* *Copyright (c) 2009 Eucalyptus Systems, Inc. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, only version 3 of the License. * * * This file is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * for more details. * * You should have received a copy of the GNU General Public License along * with this program. If not, see <http://www.gnu.org/licenses/>. * * Please contact Eucalyptus Systems, Inc., 130 Castilian * Dr., Goleta, CA 93101 USA or visit <http://www.eucalyptus.com/licenses/> * if you need additional information or have any questions. * * This file may incorporate work covered under the following copyright and * permission notice: * * Software License Agreement (BSD License) * * Copyright (c) 2008, Regents of the University of California * All rights reserved. * * Redistribution and use of this software 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. * * 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. USERS OF * THIS SOFTWARE ACKNOWLEDGE THE POSSIBLE PRESENCE OF OTHER OPEN SOURCE * LICENSED MATERIAL, COPYRIGHTED MATERIAL OR PATENTED MATERIAL IN THIS * SOFTWARE, AND IF ANY SUCH MATERIAL IS DISCOVERED THE PARTY DISCOVERING * IT MAY INFORM DR. RICH WOLSKI AT THE UNIVERSITY OF CALIFORNIA, SANTA * BARBARA WHO WILL THEN ASCERTAIN THE MOST APPROPRIATE REMEDY, WHICH IN * THE REGENTS DISCRETION MAY INCLUDE, WITHOUT LIMITATION, REPLACEMENT * OF THE CODE SO IDENTIFIED, LICENSING OF THE CODE SO IDENTIFIED, OR * WITHDRAWAL OF THE CODE CAPABILITY TO THE EXTENT NEEDED TO COMPLY WITH * ANY SUCH LICENSES OR RIGHTS. *******************************************************************************/ package edu.ucsb.eucalyptus.admin.client; import com.google.gwt.event.dom.client.ClickHandler; import com.google.gwt.event.dom.client.MouseDownEvent; import com.google.gwt.event.dom.client.MouseDownHandler; import com.google.gwt.event.dom.client.MouseMoveEvent; import com.google.gwt.event.dom.client.MouseMoveHandler; import com.google.gwt.event.dom.client.MouseOutEvent; import com.google.gwt.event.dom.client.MouseOutHandler; import com.google.gwt.event.dom.client.MouseOverEvent; import com.google.gwt.event.dom.client.MouseOverHandler; import com.google.gwt.event.dom.client.MouseUpEvent; import com.google.gwt.event.dom.client.MouseUpHandler; import com.google.gwt.user.client.Event; import com.google.gwt.user.client.ui.Widget; public class EucaButton extends com.google.gwt.user.client.ui.Button { private static final String MAIN_STYLE_NAME = "euca-Button"; private static final String MOUSE_OVER_STYLE_NAME = "-over"; private static final String MOUSE_DOWN_STYLE_NAME = "-down"; private String tooltip; private final String baseStyleName; public EucaButton(String html, String tooltip, ClickHandler handler) { this(html, tooltip, MAIN_STYLE_NAME, handler); } public EucaButton(String html, String tooltip, String baseStyleName, ClickHandler handler) { super(html, handler); this.tooltip = tooltip; this.baseStyleName = baseStyleName; this.addStyleName(this.baseStyleName); setEventHandler(); } public EucaButton(String html, ClickHandler handler) { this(html, null, handler); } public EucaButton(String html) { super(html); this.tooltip = null; this.baseStyleName = MAIN_STYLE_NAME; this.addStyleName(MAIN_STYLE_NAME); setEventHandler(); } private void setEventHandler() { sinkEvents(Event.ONMOUSEOVER | Event.ONMOUSEOUT | Event.ONMOUSEMOVE | Event.ONMOUSEUP | Event.ONMOUSEDOWN); this.addHandler(new MouseOutHandler() { public void onMouseOut(MouseOutEvent event) { removeStyleName(EucaButton.this.baseStyleName + MOUSE_OVER_STYLE_NAME); removeStyleName(EucaButton.this.baseStyleName + MOUSE_DOWN_STYLE_NAME); Tooltip.getInstance().hide(); } }, MouseOutEvent.getType()); this.addHandler(new MouseOverHandler() { public void onMouseOver(MouseOverEvent event) { addStyleName(EucaButton.this.baseStyleName + MOUSE_OVER_STYLE_NAME); } }, MouseOverEvent.getType()); this.addHandler(new MouseUpHandler() { public void onMouseUp(MouseUpEvent event) { removeStyleName(EucaButton.this.baseStyleName + MOUSE_DOWN_STYLE_NAME); } }, MouseUpEvent.getType()); this.addHandler(new MouseDownHandler() { public void onMouseDown(MouseDownEvent event) { addStyleName(EucaButton.this.baseStyleName + MOUSE_DOWN_STYLE_NAME); } }, MouseDownEvent.getType()); if (this.tooltip != null) { this.addHandler(new MouseMoveHandler() { public void onMouseMove(MouseMoveEvent event) { int x = ((Widget) event.getSource()).getAbsoluteLeft() + event.getX() + 10; int y = ((Widget) event.getSource()).getAbsoluteTop() + event.getY() + 10; Tooltip.getInstance().delayedShow(x, y, 0, tooltip); } }, MouseMoveEvent.getType()); } } }