|
1
19
20
21 package org.openide.text;
22
23 import java.beans.VetoableChangeListener  ;
24 import javax.swing.text.*;
25 import javax.swing.undo.UndoManager ;
26
27
33 class NbLikeEditorKit extends DefaultEditorKit {
34 public javax.swing.text.Document createDefaultDocument() {
35 return new Doc ();
36 }
37
38 class Doc extends PlainDocument
39 implements NbDocument.WriteLockable, StyledDocument {
40
43 public Doc() {
44 super (new StringContent ());
45
46 putProperty ("supportsModificationListener", Boolean.TRUE);
48 }
49
50 public void runAtomic (Runnable r) {
51 try {
52 runAtomicAsUser (r);
53 } catch (BadLocationException ex) {
54 }
56 }
57
58 public void runAtomicAsUser (Runnable r) throws BadLocationException {
59 insOrRemoveOrRunnable (-1, null, null, -1, false, r);
60 }
61
62 public javax.swing.text.Style getLogicalStyle(int p) {
63 return null;
64 }
65
66 public javax.swing.text.Style getStyle(java.lang.String nm) {
67 return null;
68 }
69
70 public javax.swing.text.Style addStyle(java.lang.String nm, javax.swing.text.Style parent) {
71 return null;
72 }
73
74 public void setParagraphAttributes(int offset, int length, javax.swing.text.AttributeSet s, boolean replace) {
75 }
76
77 public void setCharacterAttributes(int offset, int length, javax.swing.text.AttributeSet s, boolean replace) {
78 }
79
80 public void removeStyle(java.lang.String nm) {
81 }
82
83 public java.awt.Font getFont(javax.swing.text.AttributeSet attr) {
84 return null;
85 }
86
87 public java.awt.Color getBackground(javax.swing.text.AttributeSet attr) {
88 return null;
89 }
90
91 public javax.swing.text.Element getCharacterElement(int pos) {
92 return null;
93 }
94
95 public void setLogicalStyle(int pos, javax.swing.text.Style s) {
96 }
97
98 public java.awt.Color getForeground(javax.swing.text.AttributeSet attr) {
99 return null;
100 }
101
102 private int changes;
103 public void insertString (int offs, String str, AttributeSet a) throws BadLocationException {
104 insOrRemoveOrRunnable (offs, str, a, 0, true, null);
105 }
106
107 public void remove (int offs, int len) throws BadLocationException {
108 insOrRemoveOrRunnable (offs, null, null, len, false, null);
109 }
110
111
112 private void insOrRemoveOrRunnable (int offset, String str, AttributeSet set, int len, boolean insert, Runnable run)
113 throws BadLocationException {
114 boolean alreadyInsideWrite = getCurrentWriter () == Thread.currentThread ();
115 if (alreadyInsideWrite) {
116 if (run != null) {
117 run.run ();
118 } else {
119 assertOffset (offset);
120 if (insert) {
121 super.insertString (offset, str, set);
122 } else {
123 super.remove(offset, len);
124 }
125 }
126 return;
127 }
128
129 Object o = getProperty ("modificationListener");
130
131 if (run != null) {
132 writeLock ();
133 int prevChanges = changes;
134 try {
135 run.run ();
136 } finally {
137 writeUnlock ();
138 }
139 if (changes > prevChanges) {
140 try {
141 notifyModified (o, offset);
142 } catch (BadLocationException ex) {
143 }
145 }
146 } else {
147 assertOffset (offset);
148 notifyModified (o, offset);
149 try {
150 if (insert) {
151 super.insertString (offset, str, set);
152 } else {
153 super.remove(offset, len);
154 }
155 } catch (BadLocationException ex) {
156 if (o instanceof VetoableChangeListener ) {
157 VetoableChangeListener l = (VetoableChangeListener )o;
158 try {
159 l.vetoableChange (new java.beans.PropertyChangeEvent (this, "modified", null, Boolean.FALSE));
160 } catch (java.beans.PropertyVetoException ignore) {
161 }
162 }
163 throw ex;
164 }
165 }
166 }
167
168 private void assertOffset (int offset) throws BadLocationException {
169 if (offset < 0) throw new BadLocationException ("", offset);
170 }
171
172 private void notifyModified (Object o, int offset) throws BadLocationException {
173 if (o instanceof VetoableChangeListener ) {
174 VetoableChangeListener l = (VetoableChangeListener )o;
175 try {
176 l.vetoableChange (new java.beans.PropertyChangeEvent (this, "modified", null, Boolean.TRUE));
177 } catch (java.beans.PropertyVetoException ex) {
178 throw new BadLocationException("Document modification vetoed", offset);
179 }
180 }
181 }
182
183 protected void fireRemoveUpdate (javax.swing.event.DocumentEvent e) {
184 super.fireRemoveUpdate(e);
185 changes++;
186 }
187
188 protected void fireInsertUpdate (javax.swing.event.DocumentEvent e) {
189 super.fireInsertUpdate(e);
190 changes++;
191 }
192
193 protected void fireChangedUpdate (javax.swing.event.DocumentEvent e) {
194 super.fireChangedUpdate(e);
195 changes++;
196 }
197
198 } }
200 |
Popular Tags |
Java API By Example, From Geeks To Geeks.