001 /* 002 * Sonar, open source software quality management tool. 003 * Copyright (C) 2008-2011 SonarSource 004 * mailto:contact AT sonarsource DOT com 005 * 006 * Sonar is free software; you can redistribute it and/or 007 * modify it under the terms of the GNU Lesser General Public 008 * License as published by the Free Software Foundation; either 009 * version 3 of the License, or (at your option) any later version. 010 * 011 * Sonar is distributed in the hope that it will be useful, 012 * but WITHOUT ANY WARRANTY; without even the implied warranty of 013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014 * Lesser General Public License for more details. 015 * 016 * You should have received a copy of the GNU Lesser General Public 017 * License along with Sonar; if not, write to the Free Software 018 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02 019 */ 020 package org.sonar.gwt.ui; 021 022 import com.google.gwt.user.client.ui.ClickListener; 023 import com.google.gwt.user.client.ui.Hyperlink; 024 import com.google.gwt.user.client.ui.Widget; 025 026 public class ExpandCollapseLink extends Hyperlink { 027 028 private Widget expandOrCollapse; 029 030 public ExpandCollapseLink(Widget expandOrCollapse) { 031 super(); 032 this.expandOrCollapse = expandOrCollapse; 033 setText(getLinkLabel(!expandOrCollapse.isVisible())); 034 getElement().setId("expand-" + expandOrCollapse.getElement().getId()); 035 setStyleName("expandCollapseLink"); 036 final ExpandCollapseLink link = this; 037 this.addClickListener(new ClickListener() { 038 public void onClick(Widget sender) { 039 link.toggle(); 040 } 041 }); 042 getElement().getFirstChildElement().setAttribute("href", "#"); 043 } 044 045 public void toggle() { 046 boolean visible = expandOrCollapse.isVisible(); 047 setText(getLinkLabel(visible)); 048 expandOrCollapse.setVisible(!visible); 049 } 050 051 protected String getLinkLabel(boolean show) { 052 return (show ? "expand" : "collapse"); 053 } 054 055 }