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18
19 package org.objectweb.jac.aspects.gui.web;
20
21 import org.objectweb.jac.aspects.gui.*;
22 import org.objectweb.jac.core.Wrappee;
23 import org.objectweb.jac.core.rtti.CollectionItem;
24 import java.io.PrintWriter  ;
25 import java.util.HashSet ;
26
27
32
33 public class Tree extends AbstractView
34 implements View, HTMLViewer, TreeListener
35 {
36 TreeModel model;
37 boolean showRelations = true;
38 RootNode rootNode = null;
39 HashSet expandedNodes = new HashSet ();
40
41
46 public Tree(ViewFactory factory, DisplayContext context,
47 String pathDef, boolean showRelations) {
48 super(factory,context);
49 this.showRelations = showRelations;
50
51 rootNode = new RootNode();
52 model = new TreeModel( rootNode, pathDef, showRelations );
53 }
54
56 public void close(boolean validate) {
57 model.unregisterEvents();
58 }
59
60 public void genHTML(PrintWriter out) {
61 genNode(out,(AbstractNode)model.getRoot(),"");
62 }
63
64 protected boolean isExpanded(AbstractNode node) {
65 return expandedNodes.contains(node);
66 }
67
68 protected void genNode(PrintWriter out, AbstractNode node, String curPath) {
69 String nodePath = node instanceof RootNode ? "/" : curPath;
70 String nodeClass = node.isLeaf() ? "leafNode" : "treeNode";
71 boolean isRoot = node == model.getRoot();
72
73 if (!isRoot) {
74 out.println("<div class=\""+nodeClass+"\">");
75 if (!node.isLeaf()) {
76 if (isExpanded(node))
77 out.print(" <a HREF=\""+eventURL("onCollapseNode")+
78 "&nodePath="+nodePath+"\" class=\"fixed\">[-]</a>");
79 else
80 out.print(" <a HREF=\""+eventURL("onExpandNode")+
81 "&nodePath="+nodePath+"\" class=\"fixed\">[+]</a>");
82 }
83 out.println(iconElement(node.getIcon(),"")+
84 " <a HREF=\""+eventURL("onSelectNode")+"&nodePath="+
85 nodePath+"\">"+node.getText()+"</a>");
86 }
87
88 if (isExpanded(node) || isRoot) {
89 out.println(" <div class=\""+(isRoot?"rootNodes":"nodes")+"\">");
90 for (int i=0; i<node.getChildCount();i++) {
91 genNode(out,(AbstractNode)node.getChildAt(i),curPath+"/"+i);
92 }
93 out.println(" </div>");
94 }
95 if (!isRoot) {
96 out.println("</div>");
97 }
98 }
99
100
102 public void onSelectNode(String nodePath) {
103 try {
104 AbstractNode node = pathToNode(nodePath);
105 logger.debug("onSelectNode path="+nodePath+" -> "+node);
106 if (node == null)
107 return;
108 logger.debug(" node="+node);
109 Object selected = node.getUserObject();
110 logger.debug(" selected="+selected);
111 if (selected instanceof CollectionItem) {
112 context.getDisplay().refresh();
113 } else {
114 EventHandler.get().onNodeSelection(context,node,true);
115 }
116 } catch (Exception e) {
117 context.getDisplay().showError("Error",e.toString());
118 }
119 }
120
121 public void onExpandNode(String nodePath) {
122 try {
123 AbstractNode node = pathToNode(nodePath);
124 if (node instanceof ObjectNode)
126 ((ObjectNode)node).updateChildren();
127 expandedNodes.add(node);
128 } finally {
129 context.getDisplay().refresh();
130 }
131 }
132
133 public void onCollapseNode(String nodePath) {
134 try {
135 AbstractNode node = pathToNode(nodePath);
136 expandedNodes.remove(node);
137 } finally {
138 context.getDisplay().refresh();
139 }
140 }
141
142
145 protected AbstractNode pathToNode(String nodePath) {
146 AbstractNode node = (AbstractNode)model.getRoot();
147 if (nodePath.startsWith("/")) {
148 nodePath = nodePath.substring(1);
149 int index = nodePath.indexOf("/");
150 while (index!=-1) {
151 node = (AbstractNode)node.getChildAt(
152 Integer.parseInt(nodePath.substring(0,index)));
153 nodePath = nodePath.substring(index+1);
154 index = nodePath.indexOf("/");
155 }
156 if (nodePath.length()>0)
157 node = (AbstractNode)node.getChildAt(Integer.parseInt(nodePath));
158 }
159 return node;
160 }
161 }
162 |
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