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1
4 package org.wings.plaf.css;
5
6 import java.awt.event.InputEvent  ;
7 import java.util.StringTokenizer ;
8
9 import javax.swing.KeyStroke ;
10
11 import org.wings.SComponent;
12 import org.wings.script.JavaScriptListener;
13 import org.wings.script.ScriptListener;
14
15
19 class CaptureDefaultBindingsScriptListener
20 extends JavaScriptListener
21 {
22 public CaptureDefaultBindingsScriptListener(String event, String code, String script) {
23 super(event, code, script);
24 }
25
26 static void install(SComponent component) {
27 ScriptListener[] scriptListeners = component.getScriptListeners();
28
29 for (int i = 0; i < scriptListeners.length; i++) {
30 ScriptListener scriptListener = scriptListeners[i];
31 if (scriptListener instanceof CaptureDefaultBindingsScriptListener)
32 component.removeScriptListener(scriptListener);
33 }
34
35 String string = (String )component.getSession().getProperty("wings.capture.default.bindings", "");
36
37 StringBuffer typed = new StringBuffer ();
38 for (StringTokenizer tokenizer = new StringTokenizer (string, ","); tokenizer.hasMoreTokens();) {
39 String token = tokenizer.nextToken();
40 KeyStroke keyStroke = KeyStroke.getKeyStroke(token);
41
42 writeMatch(typed, keyStroke);
43 writeCapture(typed);
44 }
45
46 if (typed.length() > 0)
47 component.addScriptListener(new CaptureDefaultBindingsScriptListener("onkeypress", "return typed_" + component.getName() + "(event)",
48 "function typed_" + component.getName() + "(event) {\n " +
49 "event = getEvent(event);\n " +
50 typed.toString() + " return true;\n}\n"));
51 }
52
53 private static void writeMatch(StringBuffer buffer, KeyStroke keyStroke) {
54 buffer.append("if (event.keyCode == " + keyStroke.getKeyCode());
55 if ((keyStroke.getModifiers() & InputEvent.SHIFT_DOWN_MASK) != 0)
56 buffer.append(" && event.shiftKey");
57 else
58 buffer.append(" && !event.shiftKey");
59 if ((keyStroke.getModifiers() & InputEvent.CTRL_DOWN_MASK) != 0)
60 buffer.append(" && event.ctrlKey");
61 else
62 buffer.append(" && !event.ctrlKey");
63 if ((keyStroke.getModifiers() & InputEvent.ALT_DOWN_MASK) != 0)
64 buffer.append(" && event.altKey");
65 else
66 buffer.append(" && !event.altKey");
67 buffer.append(")");
68 }
69
70 private static void writeCapture(StringBuffer buffer) {
71 buffer.append(" { event.preventDefault(); return true; }\n");
72 }
73 }
74 |
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Java API By Example, From Geeks To Geeks.