Source Code Cross Referenced for UndoEvent.java in  » IDE-Netbeans » visualweb.api.designer » org » netbeans » modules » visualweb » insync » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » visualweb.api.designer » org.netbeans.modules.visualweb.insync 
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 1997-2007 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:        package org.netbeans.modules.visualweb.insync;
042:
043:        import org.netbeans.modules.visualweb.api.insync.InSyncService;
044:
045:        import java.lang.reflect.InvocationTargetException;
046:        import java.lang.reflect.Method;
047:        import java.util.ArrayList;
048:        import java.util.Iterator;
049:
050:        import org.openide.ErrorManager;
051:        import org.openide.awt.UndoRedo;
052:        import org.openide.cookies.EditorCookie; // XXX Node a NB cookie, can't use!
053:        //import org.openide.cookies.UndoRedoCookie;
054:        import org.openide.loaders.DataObject;
055:        import org.openide.text.CloneableEditorSupport;
056:
057:        /**
058:         * Represents a single undoable event
059:         *
060:         * @author  Tor Norbye
061:         */
062:        public class UndoEvent implements  InSyncService.WriteLock {
063:            private String description;
064:            private ArrayList modifiedUnits;
065:            private Model model;
066:
067:            public Model getModel() {
068:                return model;
069:            }
070:
071:            public UndoEvent(String description, Model model) {
072:                this .description = description;
073:                this .model = model;
074:            }
075:
076:            /**
077:             * Make a note of the fact that the given source unit was updated as part of this undoable
078:             * event, such that its buffer's undo event is run when this entire event is rolled back. We
079:             * want to actually record units MULTIPLE times if they are actually flushed several times
080:             * during an update - that way we can undo all their changes as a single event.
081:             */
082:            public void notifyBufferUpdated(SourceUnit unit) {
083:                if (modifiedUnits == null) {
084:                    modifiedUnits = new ArrayList(3);
085:                }
086:                modifiedUnits.add(unit);
087:            }
088:
089:            /**
090:             *
091:             */
092:            public void undo() {
093:                if (modifiedUnits == null) {
094:                    return;
095:                }
096:
097:                Iterator it = modifiedUnits.iterator();
098:                while (it.hasNext()) {
099:                    SourceUnit unit = (SourceUnit) it.next();
100:                    DataObject dobj = unit.getDataObject();
101:                    /*
102:                      This doesn't work well because the JavaEditor is NOT
103:                      a ClonableEditor!
104:                    EditorCookie ec = (EditorCookie)dobj.getCookie(EditorCookie.class);
105:                    if (ec instanceof CloneableEditorSupport) {
106:                        CloneableEditorSupport ces = (CloneableEditorSupport)ec;
107:                        ces.getUndoRedoPublic().undo();
108:                    }
109:                     */
110:                    //            UndoRedoCookie urc = (UndoRedoCookie)dobj.getCookie(UndoRedoCookie.class);
111:                    //            if (urc != null) {
112:                    //                UndoRedo ur = urc.getUndoRedoI();
113:                    //                if (ur != null) {
114:                    //                    ur.undo();
115:                    //                }
116:                    //            }
117:                    //            RaveUndoRedoCookie urc = (RaveUndoRedoCookie)dobj.getCookie(RaveUndoRedoCookie.class);
118:                    //            if (urc != null) {
119:                    //                UndoRedo ur = urc.getUndoRedoI();
120:                    //                if (ur != null) {
121:                    //                    ur.undo();
122:                    //                }
123:                    //            }
124:                    // Use CloneableEditorSupport's UndoRedo to perform undo
125:                    EditorCookie ec = (EditorCookie) dobj
126:                            .getCookie(EditorCookie.class);
127:                    if (ec instanceof  CloneableEditorSupport) {
128:                        CloneableEditorSupport ces = (CloneableEditorSupport) ec;
129:                        UndoRedo undoRedo = getUndoRedo(ces);
130:                        if (undoRedo != null) {
131:                            undoRedo.undo();
132:                        }
133:                    }
134:                }
135:            }
136:
137:            /** Return true iff there have been any changes to any buffers
138:             * for this undo event.
139:             */
140:            public boolean hasChanges() {
141:                return modifiedUnits != null && modifiedUnits.size() > 0;
142:            }
143:
144:            /**
145:             *
146:             */
147:            public void redo() {
148:                if (modifiedUnits == null) {
149:                    return;
150:                }
151:
152:                Iterator it = modifiedUnits.iterator();
153:                while (it.hasNext()) {
154:                    SourceUnit unit = (SourceUnit) it.next();
155:                    DataObject dobj = unit.getDataObject();
156:                    /*
157:                    EditorCookie ec = (EditorCookie)dobj.getCookie(EditorCookie.class);
158:                    if (ec instanceof CloneableEditorSupport) {
159:                        CloneableEditorSupport ces = (CloneableEditorSupport)ec;
160:                        ces.getUndoRedoPublic().redo();
161:                    }
162:                     */
163:                    //            UndoRedoCookie urc = (UndoRedoCookie)dobj.getCookie(UndoRedoCookie.class);
164:                    //            if (urc != null) {
165:                    //                UndoRedo ur = urc.getUndoRedoI();
166:                    //                if (ur != null) {
167:                    //                    ur.redo();
168:                    //                }
169:                    //            }
170:                    //            RaveUndoRedoCookie urc = (RaveUndoRedoCookie)dobj.getCookie(RaveUndoRedoCookie.class);
171:                    //            if (urc != null) {
172:                    //                UndoRedo ur = urc.getUndoRedoI();
173:                    //                if (ur != null) {
174:                    //                    ur.redo();
175:                    //                }
176:                    //            }
177:                    // Use CloneableEditorSupport's UndoRedo to perform redo
178:                    EditorCookie ec = (EditorCookie) dobj
179:                            .getCookie(EditorCookie.class);
180:                    if (ec instanceof  CloneableEditorSupport) {
181:                        CloneableEditorSupport ces = (CloneableEditorSupport) ec;
182:                        UndoRedo undoRedo = getUndoRedo(ces);
183:                        if (undoRedo != null) {
184:                            undoRedo.redo();
185:                        }
186:                    }
187:                }
188:            }
189:
190:            /**
191:             * @return the never-null description for this event.
192:             */
193:            public String getDescription() {
194:                return description != null ? description : "";
195:            }
196:
197:            public String toString() {
198:                return getDescription();
199:            }
200:
201:            // CloneableEditorSupport's UndoRedo is protected, so call it via reflection.
202:            private static UndoRedo getUndoRedo(CloneableEditorSupport ces) {
203:                try {
204:                    Method method = CloneableEditorSupport.class
205:                            .getDeclaredMethod("getUndoRedo", new Class[0]);
206:                    method.setAccessible(true);
207:                    try {
208:                        return (UndoRedo) method.invoke(ces, new Object[0]);
209:                    } catch (IllegalArgumentException ex) {
210:                        ErrorManager.getDefault().notify(
211:                                ErrorManager.INFORMATIONAL, ex);
212:                    } catch (InvocationTargetException ex) {
213:                        ErrorManager.getDefault().notify(
214:                                ErrorManager.INFORMATIONAL, ex);
215:                    } catch (IllegalAccessException ex) {
216:                        ErrorManager.getDefault().notify(
217:                                ErrorManager.INFORMATIONAL, ex);
218:                    }
219:                } catch (SecurityException ex) {
220:                    ErrorManager.getDefault().notify(
221:                            ErrorManager.INFORMATIONAL, ex);
222:                } catch (NoSuchMethodException ex) {
223:                    ErrorManager.getDefault().notify(
224:                            ErrorManager.INFORMATIONAL, ex);
225:                }
226:                return null;
227:            }
228:        }
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