001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: package com.sun.rave.web.ui.component.util.handlers;
042:
043: import com.sun.rave.web.ui.component.Tree;
044: import com.sun.rave.web.ui.component.TreeNode;
045: import com.sun.rave.web.ui.component.util.event.HandlerContext;
046:
047: import java.util.List;
048:
049: import javax.faces.component.UIComponent;
050:
051: /**
052: * <P> This class contains {@link com.sun.rave.web.ui.component.util.event.Handler}
053: * methods that perform {@link Tree} and
054: * {@link TreeNode} specific functions.</P>
055: *
056: * @author Ken Paulsen (ken.paulsen@sun.com)
057: */
058: public class TreeHandlers {
059:
060: /**
061: * <P> Default Constructor.</P>
062: */
063: public TreeHandlers() {
064: }
065:
066: /**
067: * <p> This {@link com.sun.rave.web.ui.component.util.event.Handler} creates a
068: * <code>List</code> of image theme icons that should be rendered from
069: * left to right representing the lines and other images that create a
070: * portion of the tree.</p>
071: *
072: * @param context The {@link HandlerContext}.
073: */
074: public void getImageKeys(HandlerContext context) {
075: // Get the tree node
076: TreeNode treeNode = (TreeNode) context
077: .getInputValue(CURRENT_NODE);
078:
079: // Get the list (delegate back to TreeNode so that handler does not
080: // contain this logic)
081: List list = treeNode.getImageKeys();
082:
083: // Set the output value
084: context.setOutputValue("result", list);
085: }
086:
087: /**
088: * <p> This {@link com.sun.rave.web.ui.component.util.event.Handler} selects
089: * the specified {@link TreeNode}. The previous selection (if any)
090: * will be unselected.</p>
091: *
092: * @param context The {@link HandlerContext}.
093: */
094: public void selectTreeNode(HandlerContext context) {
095: TreeNode treeNode = (TreeNode) context
096: .getInputValue("treeNode");
097: UIComponent comp = treeNode;
098: while ((comp != null) && !(comp instanceof Tree)) {
099: comp = comp.getParent();
100: }
101: if (comp != null) {
102: ((Tree) comp).selectTreeNode(treeNode);
103: }
104: }
105:
106: /**
107: * <p> This method provides the <code>decode()</code> functionality for
108: * the {@link Tree}.</p>
109: *
110: * @param context The {@link HandlerContext}.
111: */
112: public void decodeTree(HandlerContext context) {
113: Tree comp = (Tree) context.getEventObject().getSource();
114: comp.setSubmittedValue(comp.getCookieSelectedTreeNode());
115:
116: String nodeId = comp.getCookieExpandNode();
117:
118: if (nodeId != null && comp.isExpandOnSelect()) {
119: // a selection was made - expand the corresponding TreeNode
120: TreeNode node = (TreeNode) comp.findComponent(":"
121: .concat(nodeId));
122:
123: if (node != null) {
124: node.setExpanded(true);
125: }
126: }
127: }
128:
129: /**
130: * <p> This constant defines the input parameter key used to pass in the
131: * {@link TreeNode}. ("node")</p>
132: */
133: public static final String CURRENT_NODE = "node"; // NO18N
134: }
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