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1
19
20 package org.netbeans.modules.debugger.ui.models;
21
22 import java.beans.PropertyChangeEvent  ;
23 import java.beans.PropertyChangeListener ;
24 import java.lang.ref.WeakReference ;
25 import java.util.Vector ;
26
27 import org.netbeans.api.debugger.Watch;
28 import org.netbeans.api.debugger.DebuggerManager;
29 import org.netbeans.api.debugger.DebuggerManagerAdapter;
30 import org.netbeans.spi.viewmodel.ModelEvent;
31 import org.netbeans.spi.viewmodel.TreeModel;
32 import org.netbeans.spi.viewmodel.ModelListener;
33 import org.netbeans.spi.viewmodel.UnknownTypeException;
34
35
36
39 public class WatchesTreeModel implements TreeModel {
40
41 private Listener listener;
42 private Vector listeners = new Vector ();
43
44
45
49 public Object getRoot () {
50 return ROOT;
51 }
52
53
57 public Object [] getChildren (Object parent, int from, int to)
58 throws UnknownTypeException {
59 if (parent == ROOT) {
60 Watch[] ws = DebuggerManager.getDebuggerManager ().
61 getWatches ();
62 if (listener == null)
63 listener = new Listener (this);
64 to = Math.min(ws.length, to);
65 from = Math.min(ws.length, from);
66 Watch[] fws = new Watch [to - from];
67 System.arraycopy (ws, from, fws, 0, to - from);
68 return fws;
69 } else
70 throw new UnknownTypeException (parent);
71 }
72
73
82 public int getChildrenCount (Object node) throws UnknownTypeException {
83 if (node == ROOT) {
84 if (listener == null)
85 listener = new Listener (this);
86 return Integer.MAX_VALUE;
88 } else
90 throw new UnknownTypeException (node);
91 }
92
93 public boolean isLeaf (Object node) throws UnknownTypeException {
94 if (node == ROOT) return false;
95 if (node instanceof Watch) return true;
96 throw new UnknownTypeException (node);
97 }
98
99 public void addModelListener (ModelListener l) {
100 listeners.add (l);
101 }
102
103 public void removeModelListener (ModelListener l) {
104 listeners.remove (l);
105 }
106
107 private void fireTreeChanged () {
108 Vector v = (Vector ) listeners.clone ();
109 int i, k = v.size ();
110 for (i = 0; i < k; i++)
111 ((ModelListener) v.get (i)).modelChanged (
112 new ModelEvent.NodeChanged(this, ROOT, ModelEvent.NodeChanged.CHILDREN_MASK)
113 );
114 }
115
116 void fireWatchPropertyChanged (Watch b, String propertyName) {
117 Vector v = (Vector ) listeners.clone ();
118 int i, k = v.size ();
119 for (i = 0; i < k; i++)
120 ((ModelListener) v.get (i)).modelChanged (
121 new ModelEvent.TableValueChanged (this, b, propertyName)
122 );
123 }
124
125
126
128 private static class Listener extends DebuggerManagerAdapter implements
129 PropertyChangeListener {
130
131 private WeakReference model;
132
133 public Listener (
134 WatchesTreeModel tm
135 ) {
136 model = new WeakReference (tm);
137 DebuggerManager.getDebuggerManager ().addDebuggerListener (
138 DebuggerManager.PROP_WATCHES,
139 this
140 );
141 Watch[] ws = DebuggerManager.getDebuggerManager ().
142 getWatches ();
143 int i, k = ws.length;
144 for (i = 0; i < k; i++)
145 ws [i].addPropertyChangeListener (this);
146 }
147
148 private WatchesTreeModel getModel () {
149 WatchesTreeModel m = (WatchesTreeModel) model.get ();
150 if (m == null) {
151 DebuggerManager.getDebuggerManager ().removeDebuggerListener (
152 DebuggerManager.PROP_WATCHES,
153 this
154 );
155 Watch[] ws = DebuggerManager.getDebuggerManager ().
156 getWatches ();
157 int i, k = ws.length;
158 for (i = 0; i < k; i++)
159 ws [i].removePropertyChangeListener (this);
160 }
161 return m;
162 }
163
164 public void watchAdded (Watch watch) {
165 WatchesTreeModel m = getModel ();
166 if (m == null) return;
167 watch.addPropertyChangeListener (this);
168 m.fireTreeChanged ();
169 }
170
171 public void watchRemoved (Watch watch) {
172 WatchesTreeModel m = getModel ();
173 if (m == null) return;
174 watch.removePropertyChangeListener (this);
175 m.fireTreeChanged ();
176 }
177
178 public void propertyChange (PropertyChangeEvent evt) {
179 WatchesTreeModel m = getModel ();
180 if (m == null) return;
181 if (! (evt.getSource () instanceof Watch))
182 return;
183 Watch w = (Watch) evt.getSource ();
184 m.fireWatchPropertyChanged (w, evt.getPropertyName ());
185 }
186 }
187 }
188 |
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