Source Code Cross Referenced for ModuleActions.java in  » IDE-Netbeans » library » org » netbeans » core » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » library » org.netbeans.core 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003:         *
004:         * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005:         *
006:         * The contents of this file are subject to the terms of either the GNU
007:         * General Public License Version 2 only ("GPL") or the Common
008:         * Development and Distribution License("CDDL") (collectively, the
009:         * "License"). You may not use this file except in compliance with the
010:         * License. You can obtain a copy of the License at
011:         * http://www.netbeans.org/cddl-gplv2.html
012:         * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013:         * specific language governing permissions and limitations under the
014:         * License.  When distributing the software, include this License Header
015:         * Notice in each file and include the License file at
016:         * nbbuild/licenses/CDDL-GPL-2-CP.  Sun designates this
017:         * particular file as subject to the "Classpath" exception as provided
018:         * by Sun in the GPL Version 2 section of the License file that
019:         * accompanied this code. If applicable, add the following below the
020:         * License Header, with the fields enclosed by brackets [] replaced by
021:         * your own identifying information:
022:         * "Portions Copyrighted [year] [name of copyright owner]"
023:         *
024:         * Contributor(s):
025:         *
026:         * The Original Software is NetBeans. The Initial Developer of the Original
027:         * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
028:         * Microsystems, Inc. All Rights Reserved.
029:         *
030:         * If you wish your version of this file to be governed by only the CDDL
031:         * or only the GPL Version 2, indicate your decision by adding
032:         * "[Contributor] elects to include this software in this distribution
033:         * under the [CDDL or GPL Version 2] license." If you do not indicate a
034:         * single choice of license, a recipient has the option to distribute
035:         * your version of this file under either the CDDL, the GPL Version 2 or
036:         * to extend the choice of license to its licensees as provided above.
037:         * However, if you add GPL Version 2 code and therefore, elected the GPL
038:         * Version 2 license, then the option applies only if the new code is
039:         * made subject to such option by the copyright holder.
040:         */
041:
042:        package org.netbeans.core;
043:
044:        import java.awt.event.ActionEvent;
045:        import java.util.*;
046:        import java.util.logging.Level;
047:        import java.util.logging.Logger;
048:        import javax.swing.Action;
049:
050:        import org.openide.actions.ActionManager;
051:        import org.openide.util.actions.SystemAction;
052:        import org.openide.util.Lookup;
053:
054:        import org.netbeans.core.startup.ManifestSection;
055:
056:        /**
057:         * Holds list of all actions added by modules.
058:         * @author Jaroslav Tulach, Jesse Glick
059:         */
060:        public class ModuleActions extends ActionManager
061:        /*implements PropertyChangeListener*/{
062:
063:            /** array of all actions added by modules */
064:            private static SystemAction[] array;
065:            /** of (ModuleItem, List (ManifestSection.ActionSection)) */
066:            private static Map<Object, List<ManifestSection.ActionSection>> map = new HashMap<Object, List<ManifestSection.ActionSection>>(
067:                    8);
068:            /** current module */
069:            private static Object module = null;
070:            /** Map of currently running actions */
071:            private Map<ActionEvent, Action> runningActions = new HashMap<ActionEvent, Action>();
072:
073:            public static ModuleActions getDefaultInstance() {
074:                ActionManager mgr = ActionManager.getDefault();
075:                assert mgr instanceof  ModuleActions : "Got wrong ActionManager instance: "
076:                        + mgr + " from " + Lookup.getDefault();
077:                return (ModuleActions) mgr;
078:            }
079:
080:            /** Array with all activated actions.
081:             * Can contain null that will be replaced by separators.
082:             */
083:            public SystemAction[] getContextActions() {
084:                SystemAction[] a = array;
085:                if (a != null) {
086:                    return a;
087:                }
088:                array = a = createActions();
089:                return a;
090:            }
091:
092:            /** Invokes action in a RequestPrecessor dedicated to performing
093:             * actions.
094:             */
095:            @SuppressWarnings("deprecation")
096:            public void invokeAction(final Action a, final ActionEvent e) {
097:                try {
098:                    org.openide.util.Mutex.EVENT.readAccess(new Runnable() {
099:                        public void run() {
100:                            showWaitCursor(e);
101:                        }
102:                    });
103:                    addRunningAction(a, e);
104:
105:                    a.actionPerformed(e);
106:                } finally {
107:                    removeRunningAction(e);
108:                    org.openide.util.Mutex.EVENT.readAccess(new Runnable() {
109:                        public void run() {
110:                            hideWaitCursor(e);
111:                        }
112:                    });
113:                }
114:            }
115:
116:            /** Listens on change of modules and if changed,
117:             * fires change to all listeners.
118:             */
119:            private void fireChange() {
120:                firePropertyChange(PROP_CONTEXT_ACTIONS, null, null);
121:            }
122:
123:            /** Adds action to <code>runningAction</code> map using event as a key.
124:             * @param rp <code>RequestProcessor</code> which runs the actio task
125:             * @param action action to put in map 
126:             * @param evt action event used as key in the map */
127:            private void addRunningAction(Action action, ActionEvent evt) {
128:                synchronized (runningActions) {
129:                    runningActions.put(evt, action);
130:                }
131:            }
132:
133:            /** Removes action from <code>runningAction</code> map for key.
134:             * @param evt action event used as a key in map */
135:            private void removeRunningAction(ActionEvent evt) {
136:                synchronized (runningActions) {
137:                    runningActions.remove(evt);
138:                }
139:            }
140:
141:            /** Gets collection of currently running actions. */
142:            public Collection<Action> getRunningActions() {
143:                synchronized (runningActions) {
144:                    return new ArrayList<Action>(runningActions.values());
145:                }
146:            }
147:
148:            /** Change enabled property of an action
149:             *
150:            public void propertyChange (PropertyChangeEvent ev) {
151:                if (SystemAction.PROP_ENABLED.equals (ev.getPropertyName ())) {
152:                    fireChange ();
153:                }
154:            }
155:             */
156:
157:            /** Attaches to processing of a module.
158:             * The actual object passed is arbitrary, so long as
159:             * it is different for every installed modules (as this
160:             * controls the grouping of actions with separators).
161:             * Passing null means stop processing a given module.
162:             */
163:            public static synchronized void attachTo(Object m) {
164:                module = m;
165:            }
166:
167:            /** Adds new action to the list.
168:             */
169:            public synchronized static void add(ManifestSection.ActionSection a) {
170:                List<ManifestSection.ActionSection> list = map.get(module);
171:                if (list == null) {
172:                    list = new ArrayList<ManifestSection.ActionSection>();
173:                    map.put(module, list);
174:                }
175:                list.add(a);
176:                //a.addPropertyChangeListener (INSTANCE);
177:
178:                array = null;
179:                getDefaultInstance().fireChange(); // PENDING this is too often
180:            }
181:
182:            /** Removes new action from the list.
183:             */
184:            public synchronized static void remove(
185:                    ManifestSection.ActionSection a) {
186:                List<ManifestSection.ActionSection> list = map.get(module);
187:                if (list == null) {
188:                    return;
189:                }
190:                list.remove(a);
191:                //a.removePropertyChangeListener (INSTANCE);
192:
193:                if (list.isEmpty()) {
194:                    map.remove(module);
195:                }
196:
197:                array = null;
198:                getDefaultInstance().fireChange(); // PENDING this is too often
199:            }
200:
201:            /** Creates the actions.
202:             */
203:            private synchronized static SystemAction[] createActions() {
204:                Iterator<List<ManifestSection.ActionSection>> it = map.values()
205:                        .iterator();
206:
207:                ArrayList<Object> arr = new ArrayList<Object>(map.size() * 5);
208:
209:                while (it.hasNext()) {
210:                    List<ManifestSection.ActionSection> l = it.next();
211:
212:                    Iterator<ManifestSection.ActionSection> actions = l
213:                            .iterator();
214:                    while (actions.hasNext()) {
215:                        ManifestSection.ActionSection s = actions.next();
216:
217:                        try {
218:                            arr.add(s.getInstance());
219:                        } catch (Exception ex) {
220:                            Logger.getLogger(ModuleActions.class.getName())
221:                                    .log(Level.WARNING, null, ex);
222:                        }
223:                    }
224:
225:                    if (it.hasNext()) {
226:                        // add separator between modules
227:                        arr.add(null);
228:                    }
229:
230:                }
231:
232:                return (SystemAction[]) arr
233:                        .toArray(new SystemAction[arr.size()]);
234:            }
235:
236:            private static final Logger err = Logger
237:                    .getLogger("org.openide.util.actions.MouseCursorUtils"); // NOI18N
238:
239:            /**
240:             * Running show/hide count for glass panes in use.
241:             * Maps arbitrary keys to glass panes.
242:             * Several keys may map to the same glass pane - the wait cursor is shown
243:             * so long as there are any.
244:             */
245:            private static final Map<Object, java.awt.Component> glassPaneUses = new HashMap<Object, java.awt.Component>();
246:
247:            /**
248:             * Try to find the active window's glass pane.
249:             * @return a glass pane, or null
250:             */
251:            private static java.awt.Component activeGlassPane() {
252:                java.awt.Window w = java.awt.KeyboardFocusManager
253:                        .getCurrentKeyboardFocusManager().getActiveWindow();
254:                if (w instanceof  javax.swing.RootPaneContainer) {
255:                    return ((javax.swing.RootPaneContainer) w).getGlassPane();
256:                } else {
257:                    return null;
258:                }
259:            }
260:
261:            /**
262:             * Sets wait cursor visible on the window associated with an event, if any.
263:             * @param key something to pass to {@link #hideWaitCursor} to turn it off
264:             */
265:            public static void showWaitCursor(Object key) {
266:                assert java.awt.EventQueue.isDispatchThread();
267:                assert !glassPaneUses.containsKey(key);
268:                java.awt.Component c = activeGlassPane();
269:                if (c == null) {
270:                    err
271:                            .warning("showWaitCursor could not find a suitable glass pane; key="
272:                                    + key);
273:                    return;
274:                }
275:                if (glassPaneUses.values().contains(c)) {
276:                    err.fine("wait cursor already displayed on " + c);
277:                } else {
278:                    err.fine("wait cursor will be displayed on " + c);
279:                    c.setCursor(org.openide.util.Utilities
280:                            .createProgressCursor(c));
281:                    c.setVisible(true);
282:                }
283:                glassPaneUses.put(key, c);
284:            }
285:
286:            /**
287:             * Resets cursor to default.
288:             * @param key the same key passed to {@link #showWaitCursor}
289:             */
290:            public static void hideWaitCursor(Object key) {
291:                assert java.awt.EventQueue.isDispatchThread();
292:                java.awt.Component c = glassPaneUses.get(key);
293:                if (c == null) {
294:                    return;
295:                }
296:                glassPaneUses.remove(key);
297:                if (glassPaneUses.values().contains(c)) {
298:                    err.fine("wait cursor still displayed on " + c);
299:                } else {
300:                    err.fine("wait cursor will be hidden on " + c);
301:                    c.setVisible(false);
302:                    c.setCursor(null);
303:                }
304:            }
305:
306:        }
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