Source Code Cross Referenced for RefactoringPluginFactoryImpl.java in  » IDE-Netbeans » form » org » netbeans » modules » form » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » form » org.netbeans.modules.form 
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:
042:        package org.netbeans.modules.form;
043:
044:        import java.io.IOException;
045:        import javax.lang.model.element.Element;
046:        import javax.lang.model.element.ElementKind;
047:        import javax.lang.model.element.ExecutableElement;
048:        import org.netbeans.api.fileinfo.NonRecursiveFolder;
049:        import org.netbeans.api.java.classpath.ClassPath;
050:        import org.netbeans.api.java.source.CancellableTask;
051:        import org.netbeans.api.java.source.CompilationController;
052:        import org.netbeans.api.java.source.JavaSource;
053:        import org.netbeans.api.java.source.TreePathHandle;
054:        import org.netbeans.modules.refactoring.api.AbstractRefactoring;
055:        import org.netbeans.modules.refactoring.api.MoveRefactoring;
056:        import org.netbeans.modules.refactoring.api.Problem;
057:        import org.netbeans.modules.refactoring.api.RenameRefactoring;
058:        import org.netbeans.modules.refactoring.api.SafeDeleteRefactoring;
059:        import org.netbeans.modules.refactoring.api.SingleCopyRefactoring;
060:        import org.netbeans.modules.refactoring.spi.RefactoringElementsBag;
061:        import org.netbeans.modules.refactoring.spi.RefactoringPlugin;
062:        import org.netbeans.modules.refactoring.spi.RefactoringPluginFactory;
063:        import org.openide.filesystems.FileObject;
064:        import org.openide.util.Exceptions;
065:        import org.openide.util.Lookup;
066:
067:        /**
068:         * Entry point for refactoring, registered in META-INF/services. Whenever
069:         * a refactoring is about to start, createInstance is called where we analyze
070:         * the type of refactoring and attach RefactoringInfo object to the refactoring,
071:         * which can be later accessed from various places where we prepare or perform
072:         * the additional changes in forms and resources.
073:         * 
074:         *  @author Tomas Pavek
075:         */
076:        public class RefactoringPluginFactoryImpl implements 
077:                RefactoringPluginFactory {
078:
079:            public RefactoringPlugin createInstance(
080:                    AbstractRefactoring refactoring) {
081:                RefactoringInfo.ChangeType changeType = null;
082:                FileObject primaryFile = null;
083:                String oldName = null;
084:
085:                // We must do some more analysis here, though it would be better to do
086:                // it later in the plugin's prepare method, but we can't be sure the
087:                // guarded handler is not called sooner from java plugin than our plugin.
088:
089:                if (refactoring instanceof  RenameRefactoring) {
090:                    Lookup sourceLookup = refactoring.getRefactoringSource();
091:                    FileObject file = sourceLookup.lookup(FileObject.class);
092:                    NonRecursiveFolder pkgFolder = sourceLookup
093:                            .lookup(NonRecursiveFolder.class);
094:                    final TreePathHandle tpHandle = sourceLookup
095:                            .lookup(TreePathHandle.class);
096:                    // assumption: if file is being renamed (even as result of renaming
097:                    // a class) then file != null, and if something inside the class
098:                    // is renamed then file == null
099:
100:                    if (file != null && RefactoringInfo.isJavaFile(file)) {
101:                        // renaming a java file within the same package
102:                        // (can be a form, or a component used in a form, or both)
103:                        if (isOnSourceClasspath(file)) {
104:                            changeType = RefactoringInfo.ChangeType.CLASS_RENAME;
105:                            primaryFile = file;
106:                            oldName = file.getName();
107:                        }
108:                    } else if (file == null && tpHandle != null) {
109:                        // renaming an element inside a java file
110:                        primaryFile = tpHandle.getFileObject();
111:                        if (RefactoringInfo.isJavaFileOfForm(primaryFile)) {
112:                            JavaSource source = JavaSource
113:                                    .forFileObject(tpHandle.getFileObject());
114:                            final RefactoringInfo.ChangeType[] changeTypes = new RefactoringInfo.ChangeType[1];
115:                            final String[] oldNames = new String[1];
116:                            try {
117:                                source
118:                                        .runUserActionTask(
119:                                                new CancellableTask<CompilationController>() {
120:                                                    public void cancel() {
121:                                                    }
122:
123:                                                    public void run(
124:                                                            CompilationController controller)
125:                                                            throws Exception {
126:                                                        controller
127:                                                                .toPhase(JavaSource.Phase.RESOLVED);
128:                                                        Element el = tpHandle
129:                                                                .resolveElement(controller);
130:                                                        if (el != null) {
131:                                                            switch (el
132:                                                                    .getKind()) {
133:                                                            case FIELD:
134:                                                                changeTypes[0] = RefactoringInfo.ChangeType.VARIABLE_RENAME;
135:                                                                break;
136:                                                            case LOCAL_VARIABLE:
137:                                                                Element parentEl = el
138:                                                                        .getEnclosingElement();
139:                                                                if (parentEl
140:                                                                        .getKind() == ElementKind.METHOD
141:                                                                        && "initComponents"
142:                                                                                .equals(parentEl
143:                                                                                        .getSimpleName()
144:                                                                                        .toString()) // NOI18N
145:                                                                        && ((ExecutableElement) parentEl)
146:                                                                                .getParameters()
147:                                                                                .size() == 0) {
148:                                                                    changeTypes[0] = RefactoringInfo.ChangeType.VARIABLE_RENAME;
149:                                                                }
150:                                                                break;
151:                                                            }
152:                                                            // [should we also check if it really matches an existing component in the form?]
153:                                                            oldNames[0] = el
154:                                                                    .getSimpleName()
155:                                                                    .toString();
156:                                                        }
157:                                                    }
158:                                                }, true);
159:                            } catch (IOException ex) {
160:                                Exceptions.printStackTrace(ex);
161:                            }
162:                            changeType = changeTypes[0];
163:                            oldName = oldNames[0];
164:                        }
165:                        // TBD: changing a property method of a component
166:                    } else if (file != null && file.isFolder()) {
167:                        // renaming a folder (incl. subfolders)
168:                        if (isOnSourceClasspath(file)) {
169:                            changeType = RefactoringInfo.ChangeType.FOLDER_RENAME;
170:                            primaryFile = file;
171:                            oldName = file.getName();
172:                        }
173:                    } else if (pkgFolder != null) {
174:                        // renaming a package (without subfolders)
175:                        if (isOnSourceClasspath(pkgFolder.getFolder())) {
176:                            changeType = RefactoringInfo.ChangeType.PACKAGE_RENAME;
177:                            primaryFile = pkgFolder.getFolder();
178:                            oldName = primaryFile.getName();
179:                        }
180:                    }
181:                } else if (refactoring instanceof  MoveRefactoring) {
182:                    FileObject file = refactoring.getRefactoringSource()
183:                            .lookup(FileObject.class);
184:                    if (file != null && RefactoringInfo.isJavaFile(file)
185:                            && isOnSourceClasspath(file)) {
186:                        // moving a java file (between packages)
187:                        changeType = RefactoringInfo.ChangeType.CLASS_MOVE;
188:                        primaryFile = file;
189:                        ClassPath cp = ClassPath.getClassPath(file,
190:                                ClassPath.SOURCE);
191:                        oldName = cp.getResourceName(file, '.', false);
192:                    }
193:                } else if (refactoring instanceof  SingleCopyRefactoring) {
194:                    FileObject file = refactoring.getRefactoringSource()
195:                            .lookup(FileObject.class);
196:                    if (file != null && RefactoringInfo.isJavaFileOfForm(file)
197:                            && isOnSourceClasspath(file)) {
198:                        // moving a java file (between packages)
199:                        changeType = RefactoringInfo.ChangeType.CLASS_COPY;
200:                        primaryFile = file;
201:                        ClassPath cp = ClassPath.getClassPath(file,
202:                                ClassPath.SOURCE);
203:                        oldName = cp.getResourceName(file, '.', false);
204:                    }
205:                } else if (refactoring instanceof  SafeDeleteRefactoring) {
206:                    FileObject file = refactoring.getRefactoringSource()
207:                            .lookup(FileObject.class);
208:                    if (file != null && RefactoringInfo.isJavaFileOfForm(file)
209:                            && isOnSourceClasspath(file)) {
210:                        // deleting a form
211:                        changeType = RefactoringInfo.ChangeType.CLASS_DELETE;
212:                        primaryFile = file;
213:                    }
214:                }
215:
216:                if (changeType != null) {
217:                    RefactoringInfo refInfo = new RefactoringInfo(refactoring,
218:                            changeType, primaryFile, oldName);
219:                    refactoring.getContext().add(refInfo); // to be accessible to the GuardedBlockHandlerFactoryImpl
220:                    return new RefactoringPluginImpl(refInfo);
221:                }
222:                return null;
223:            }
224:
225:            private static boolean isOnSourceClasspath(FileObject fo) {
226:                // TBD
227:                return true;
228:            }
229:
230:            // -----
231:
232:            private static class RefactoringPluginImpl implements 
233:                    RefactoringPlugin {
234:
235:                private RefactoringInfo refInfo;
236:
237:                RefactoringPluginImpl(RefactoringInfo refInfo) {
238:                    this .refInfo = refInfo;
239:                }
240:
241:                public Problem preCheck() {
242:                    return null;
243:                }
244:
245:                public Problem checkParameters() {
246:                    return null;
247:                }
248:
249:                public Problem fastCheckParameters() {
250:                    return null;
251:                }
252:
253:                public void cancelRequest() {
254:                }
255:
256:                public Problem prepare(
257:                        RefactoringElementsBag refactoringElements) {
258:                    // even if guarded blocks are not affected directly we might want some changes
259:                    if (refInfo.isForm()) {
260:                        FormRefactoringUpdate update = refInfo
261:                                .getUpdateForFile(refInfo.getPrimaryFile());
262:                        switch (refInfo.getChangeType()) {
263:                        case CLASS_DELETE: // in case of delete we only backup the form file
264:                            refactoringElements.registerTransaction(update);
265:                            return null;
266:                        case CLASS_RENAME: // renaming form class, always needs to load - auto-i18n
267:                            if (!update.prepareForm(true)) {
268:                                return new Problem(true,
269:                                        "Error loading form. Cannot update generated code.");
270:                            }
271:                            break;
272:                        // for VARIABLE_RENAME and EVENT_HANDLER_RENAME we don't know yet
273:                        // if they affect the form - guarded block handler will take care
274:                        }
275:                        refactoringElements.add(refInfo.getRefactoring(),
276:                                update.getPreviewElement());
277:                        refactoringElements.addFileChange(refInfo
278:                                .getRefactoring(), update);
279:                    } else if (refInfo.getChangeType() == RefactoringInfo.ChangeType.PACKAGE_RENAME
280:                            || refInfo.getChangeType() == RefactoringInfo.ChangeType.FOLDER_RENAME) {
281:                        boolean anyForm = false;
282:                        for (FileObject fo : refInfo.getPrimaryFile()
283:                                .getChildren()) {
284:                            if (RefactoringInfo.isJavaFileOfForm(fo)) {
285:                                anyForm = true;
286:                                FormRefactoringUpdate update = refInfo
287:                                        .getUpdateForFile(fo);
288:                                refactoringElements.addFileChange(refInfo
289:                                        .getRefactoring(), update);
290:                            }
291:                        }
292:                        if (anyForm) {
293:                            // TODO add refactoring element informing about updating references to resources in GUI forms in this package
294:                        }
295:                    }
296:                    return null;
297:                }
298:            }
299:        }
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