Source Code Cross Referenced for MultiKeymap.java in  » Swing-Library » abeille-forms-designer » org » netbeans » editor » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Swing Library » abeille forms designer » org.netbeans.editor 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         *                 Sun Public License Notice
003:         * 
004:         * The contents of this file are subject to the Sun Public License
005:         * Version 1.0 (the "License"). You may not use this file except in
006:         * compliance with the License. A copy of the License is available at
007:         * http://www.sun.com/
008:         * 
009:         * The Original Code is NetBeans. The Initial Developer of the Original
010:         * Code is Sun Microsystems, Inc. Portions Copyright 1997-2000 Sun
011:         * Microsystems, Inc. All Rights Reserved.
012:         */
013:
014:        package org.netbeans.editor;
015:
016:        import java.awt.event.ActionEvent;
017:        import java.awt.event.InputEvent;
018:        import java.awt.event.KeyEvent;
019:        import java.util.HashMap;
020:        import java.util.Map;
021:
022:        import javax.swing.AbstractAction;
023:        import javax.swing.Action;
024:        import javax.swing.KeyStroke;
025:        import javax.swing.text.DefaultEditorKit;
026:        import javax.swing.text.JTextComponent;
027:        import javax.swing.text.Keymap;
028:
029:        /**
030:         * Keymap that is capable to work with MultiKeyBindings
031:         * 
032:         * @author Miloslav Metelka
033:         * @version 0.10
034:         */
035:
036:        public class MultiKeymap implements  Keymap {
037:
038:            /** Action that does nothing */
039:            public static final Action EMPTY_ACTION = new AbstractAction() {
040:                public void actionPerformed(ActionEvent evt) {
041:                }
042:            };
043:
044:            /** Action that beeps. Used for wrong shortcut by default */
045:            public static final Action BEEP_ACTION = new DefaultEditorKit.BeepAction();
046:
047:            /** JTextComponent.DefaultKeymap to be used for processing by this keymap */
048:            private Keymap delegate;
049:
050:            /** Context keymap or null for base context */
051:            private Keymap context;
052:
053:            /** Ignore possible keyTyped events after context reset */
054:            private boolean ignoreNextTyped = false;
055:
056:            /**
057:             * Action to return when there's no action for incoming key in some context.
058:             * This action doesn't occur when no action is found in base context.
059:             */
060:            private Action contextKeyNotFoundAction = BEEP_ACTION;
061:
062:            /**
063:             * Construct new keymap.
064:             * 
065:             * @param name
066:             *            name of new keymap
067:             */
068:            public MultiKeymap(String name) {
069:                delegate = JTextComponent.addKeymap(name, null);
070:            }
071:
072:            /** Set the context keymap */
073:            void setContext(Keymap contextKeymap) {
074:                context = contextKeymap;
075:            }
076:
077:            /** Reset keymap to base context */
078:            public void resetContext() {
079:                context = null;
080:            }
081:
082:            /** What to do when key is not resolved for context */
083:            public void setContextKeyNotFoundAction(Action a) {
084:                contextKeyNotFoundAction = a;
085:            }
086:
087:            /**
088:             * Loads the key to action mappings into this keymap in similar way as
089:             * JTextComponent.loadKeymap() does. This method is able to handle
090:             * MultiKeyBindings but for compatibility it expects
091:             * JTextComponent.KeyBinding array.
092:             */
093:            public void load(JTextComponent.KeyBinding[] bindings,
094:                    Action[] actions) {
095:                Map h = new HashMap(bindings.length);
096:                // add actions to map to resolve by names quickly
097:                for (int i = 0; i < actions.length; i++) {
098:                    Action a = actions[i];
099:                    String value = (String) a.getValue(Action.NAME);
100:                    h.put((value != null ? value : ""), a); // NOI18N
101:                }
102:                load(bindings, h);
103:            }
104:
105:            /**
106:             * Loads key to action mappings into this keymap
107:             * 
108:             * @param bindings
109:             *            array of bindings
110:             * @param actions
111:             *            map of [action_name, action] pairs
112:             */
113:            public void load(JTextComponent.KeyBinding[] bindings, Map actions) {
114:                // now create bindings in keymap(s)
115:                for (int i = 0; i < bindings.length; i++) {
116:                    Action a = (Action) actions.get(bindings[i].actionName);
117:                    if (a != null) {
118:                        boolean added = false;
119:                        if (bindings[i] instanceof  MultiKeyBinding) {
120:                            MultiKeyBinding mb = (MultiKeyBinding) bindings[i];
121:                            if (mb.keys != null) {
122:                                Keymap cur = delegate;
123:                                for (int j = 0; j < mb.keys.length; j++) {
124:                                    if (j == mb.keys.length - 1) { // last keystroke in
125:                                        // sequence
126:                                        cur
127:                                                .addActionForKeyStroke(
128:                                                        mb.keys[j], a);
129:                                    } else { // not the last keystroke
130:                                        Action sca = cur.getAction(mb.keys[j]);
131:                                        if (!(sca instanceof  KeymapSetContextAction)) {
132:                                            sca = new KeymapSetContextAction(
133:                                                    JTextComponent.addKeymap(
134:                                                            null, null));
135:                                            cur.addActionForKeyStroke(
136:                                                    mb.keys[j], sca);
137:                                        }
138:                                        cur = ((KeymapSetContextAction) sca).contextKeymap;
139:                                    }
140:                                }
141:                                added = true;
142:                            }
143:                        }
144:                        if (!added) {
145:                            if (bindings[i].key != null) {
146:                                delegate.addActionForKeyStroke(bindings[i].key,
147:                                        a);
148:                            } else { // key is null -> set default action
149:                                setDefaultAction(a);
150:                            }
151:                        }
152:                    }
153:                }
154:            }
155:
156:            public String getName() {
157:                return (context != null) ? context.getName() : delegate
158:                        .getName();
159:            }
160:
161:            /**
162:             * Get default action of this keymap or parent keymap if this one doesn't
163:             * have one. Context keymap can have default action but it will be not used.
164:             */
165:            public Action getDefaultAction() {
166:                return delegate.getDefaultAction();
167:            }
168:
169:            public void setDefaultAction(Action a) {
170:                if (context != null) {
171:                    context.setDefaultAction(a);
172:                } else {
173:                    delegate.setDefaultAction(a);
174:                }
175:            }
176:
177:            Action getActionImpl(KeyStroke key) {
178:                Action a = null;
179:                if (context != null) {
180:                    a = context.getAction(key);
181:                    if (a == null) { // possibly ignore modifier keystrokes
182:                        switch (key.getKeyCode()) {
183:                        case KeyEvent.VK_SHIFT:
184:                        case KeyEvent.VK_CONTROL:
185:                        case KeyEvent.VK_ALT:
186:                        case KeyEvent.VK_META:
187:                            return EMPTY_ACTION;
188:                        }
189:                        if (key.isOnKeyRelease()
190:                                || (key.getKeyChar() != 0 && key.getKeyChar() != KeyEvent.CHAR_UNDEFINED)) {
191:                            return EMPTY_ACTION; // ignore releasing and typed events
192:                        }
193:                    }
194:                } else {
195:                    a = delegate.getAction(key);
196:                }
197:
198:                return a;
199:            }
200:
201:            public Action getAction(KeyStroke key) {
202:
203:                Action ret = null;
204:
205:                // Explicit patches of the keyboard problems
206:                if (ignoreNextTyped) {
207:                    if (key.isOnKeyRelease()) { // ignore releasing here
208:                        ret = EMPTY_ACTION;
209:                    } else { // either pressed or typed
210:                        ignoreNextTyped = false;
211:                    }
212:                    if (key.getKeyChar() != 0
213:                            && key.getKeyChar() != KeyEvent.CHAR_UNDEFINED) {
214:                        ret = EMPTY_ACTION; // prevent using defaultAction
215:                    }
216:                }
217:
218:                if (ret == null) {
219:                    ret = getActionImpl(key);
220:                    if (ret != EMPTY_ACTION) { // key that should be ignored
221:                        if (!(ret instanceof  KeymapSetContextAction)) {
222:                            if (context != null) {
223:                                ignoreNextTyped = true;
224:                            } else if ( // Explicit patch for the keyTyped sent after
225:                            // Alt+key
226:                            (key.getModifiers() & InputEvent.ALT_MASK) != 0 // Alt
227:                                    // pressed
228:                                    && (key.getModifiers() & InputEvent.CTRL_MASK) == 0 // Ctrl
229:                            // not
230:                            // pressed
231:                            ) {
232:                                boolean patch = true;
233:                                if (key.getKeyChar() == 0
234:                                        || key.getKeyChar() == KeyEvent.CHAR_UNDEFINED) {
235:                                    switch (key.getKeyCode()) {
236:                                    case KeyEvent.VK_ALT: // don't patch single Alt
237:                                    case KeyEvent.VK_KANJI:
238:                                    case KeyEvent.VK_KATAKANA:
239:                                    case KeyEvent.VK_HIRAGANA:
240:                                    case KeyEvent.VK_JAPANESE_KATAKANA:
241:                                    case KeyEvent.VK_JAPANESE_HIRAGANA:
242:                                    case 0x0107: // KeyEvent.VK_INPUT_METHOD_ON_OFF:
243:                                        // - in 1.3 only
244:                                    case KeyEvent.VK_NUMPAD0: // Alt+NumPad keys
245:                                    case KeyEvent.VK_NUMPAD1:
246:                                    case KeyEvent.VK_NUMPAD2:
247:                                    case KeyEvent.VK_NUMPAD3:
248:                                    case KeyEvent.VK_NUMPAD4:
249:                                    case KeyEvent.VK_NUMPAD5:
250:                                    case KeyEvent.VK_NUMPAD6:
251:                                    case KeyEvent.VK_NUMPAD7:
252:                                    case KeyEvent.VK_NUMPAD8:
253:                                    case KeyEvent.VK_NUMPAD9:
254:                                        patch = false;
255:                                        break;
256:                                    }
257:                                }
258:
259:                                if (patch) {
260:                                    ignoreNextTyped = true;
261:                                }
262:                            } else if ((key.getModifiers() & InputEvent.META_MASK) != 0) { // Explicit
263:                                // patch
264:                                // for
265:                                // the
266:                                // keyTyped
267:                                // sent
268:                                // after
269:                                // Meta+key
270:                                // for
271:                                // Mac
272:                                // OS X
273:                                ignoreNextTyped = true;
274:                            }
275:                            resetContext(); // reset context when resolved
276:                        }
277:
278:                        if (context != null && ret == null) { // no action found when
279:                            // in context
280:                            ret = contextKeyNotFoundAction;
281:                        }
282:                    }
283:                }
284:
285:                // Explicit patch for Ctrl+Space - eliminating the additional KEY_TYPED
286:                // sent
287:                if (key == KeyStroke.getKeyStroke(KeyEvent.VK_SPACE,
288:                        InputEvent.CTRL_MASK)) {
289:                    ignoreNextTyped = true;
290:                }
291:
292:                /*
293:                 * System.out.println("key=" + key + ", keyChar=" +
294:                 * (int)key.getKeyChar() + ", keyCode=" + key.getKeyCode() + ",
295:                 * keyModifiers=" + key.getModifiers() // NOI18N + ", ignoreNextTyped=" +
296:                 * ignoreNextTyped + ", context=" + context // NOI18N + ", returning
297:                 * action=" + ((ret == EMPTY_ACTION) ? "EMPTY_ACTION" : ((ret == null) ?
298:                 * "null" : ((ret instanceof javax.swing.text.TextAction) // NOI18N ?
299:                 * ret.getValue(javax.swing.Action.NAME) : ret.getClass()))));
300:                 */
301:
302:                return ret;
303:            }
304:
305:            public KeyStroke[] getBoundKeyStrokes() {
306:                return (context != null) ? context.getBoundKeyStrokes()
307:                        : delegate.getBoundKeyStrokes();
308:            }
309:
310:            public Action[] getBoundActions() {
311:                return (context != null) ? context.getBoundActions() : delegate
312:                        .getBoundActions();
313:            }
314:
315:            public KeyStroke[] getKeyStrokesForAction(Action a) {
316:                return (context != null) ? context.getKeyStrokesForAction(a)
317:                        : delegate.getKeyStrokesForAction(a);
318:            }
319:
320:            public boolean isLocallyDefined(KeyStroke key) {
321:                return (context != null) ? context.isLocallyDefined(key)
322:                        : delegate.isLocallyDefined(key);
323:            }
324:
325:            public void addActionForKeyStroke(KeyStroke key, Action a) {
326:                if (context != null) {
327:                    context.addActionForKeyStroke(key, a);
328:                } else {
329:                    delegate.addActionForKeyStroke(key, a);
330:                }
331:            }
332:
333:            public void removeKeyStrokeBinding(KeyStroke key) {
334:                if (context != null) {
335:                    context.removeKeyStrokeBinding(key);
336:                } else {
337:                    delegate.removeKeyStrokeBinding(key);
338:                }
339:            }
340:
341:            public void removeBindings() {
342:                if (context != null) {
343:                    context.removeBindings();
344:                } else {
345:                    delegate.removeBindings();
346:                }
347:            }
348:
349:            public Keymap getResolveParent() {
350:                return (context != null) ? context.getResolveParent()
351:                        : delegate.getResolveParent();
352:            }
353:
354:            public void setResolveParent(Keymap parent) {
355:                if (context != null) {
356:                    context.setResolveParent(parent);
357:                } else {
358:                    delegate.setResolveParent(parent);
359:                }
360:            }
361:
362:            public String toString() {
363:                return "MK: name=" + getName(); // NOI18N
364:            }
365:
366:            /** Internal class used to set the context */
367:            class KeymapSetContextAction extends AbstractAction {
368:
369:                Keymap contextKeymap;
370:
371:                static final long serialVersionUID = 1034848289049566148L;
372:
373:                KeymapSetContextAction(Keymap contextKeymap) {
374:                    this .contextKeymap = contextKeymap;
375:                }
376:
377:                public void actionPerformed(ActionEvent evt) {
378:                    setContext(contextKeymap);
379:                }
380:
381:            }
382:
383:        }
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