Source Code Cross Referenced for NbSafeDeleteRefactoringPlugin.java in  » IDE-Netbeans » api » org » netbeans » modules » apisupport » refactoring » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE Netbeans » api » org.netbeans.modules.apisupport.refactoring 
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.modules.apisupport.refactoring;
043:
044:        import java.io.File;
045:        import java.io.FileNotFoundException;
046:        import java.io.IOException;
047:        import java.io.InputStream;
048:        import java.io.OutputStream;
049:        import java.util.StringTokenizer;
050:        import java.util.regex.Pattern;
051:        import org.netbeans.api.java.source.TreePathHandle;
052:        import org.netbeans.api.project.FileOwnerQuery;
053:        import org.netbeans.api.project.Project;
054:        import org.netbeans.modules.apisupport.project.EditableManifest;
055:        import org.netbeans.modules.apisupport.project.layers.LayerUtils;
056:        import org.netbeans.modules.apisupport.project.spi.NbModuleProvider;
057:        import org.netbeans.modules.refactoring.api.AbstractRefactoring;
058:        import org.netbeans.modules.refactoring.api.Problem;
059:        import org.netbeans.modules.refactoring.api.SafeDeleteRefactoring;
060:        import org.netbeans.modules.refactoring.spi.RefactoringElementImplementation;
061:        import org.netbeans.modules.refactoring.spi.RefactoringElementsBag;
062:        import org.openide.ErrorManager;
063:        import org.openide.filesystems.FileLock;
064:        import org.openide.filesystems.FileObject;
065:        import org.openide.filesystems.FileUtil;
066:        import org.openide.util.Exceptions;
067:        import org.openide.util.Lookup;
068:        import org.openide.util.NbBundle;
069:
070:        /**
071:         *
072:         * @author Milos Kleint - inspired by j2eerefactoring
073:         */
074:        public class NbSafeDeleteRefactoringPlugin extends
075:                AbstractRefactoringPlugin {
076:
077:            /** This one is important creature - makes sure that cycles between plugins won't appear */
078:            private static ThreadLocal semafor = new ThreadLocal();
079:
080:            /**
081:             * Creates a new instance of NbRenameRefactoringPlugin
082:             */
083:            public NbSafeDeleteRefactoringPlugin(AbstractRefactoring refactoring) {
084:                super (refactoring);
085:            }
086:
087:            public void cancelRequest() {
088:
089:            }
090:
091:            public Problem fastCheckParameters() {
092:                return null;
093:            }
094:
095:            /** Collects refactoring elements for a given refactoring.
096:             * @param refactoringElements Collection of refactoring elements - the implementation of this method
097:             * should add refactoring elements to this collections. It should make no assumptions about the collection
098:             * content.
099:             * @return Problems found or null (if no problems were identified)
100:             */
101:            public Problem prepare(RefactoringElementsBag refactoringElements) {
102:                if (semafor.get() != null) {
103:                    return null;
104:                }
105:                semafor.set(new Object());
106:                try {
107:                    SafeDeleteRefactoring delete = (SafeDeleteRefactoring) refactoring;
108:                    Problem problem = null;
109:                    Lookup lkp = delete.getRefactoringSource();
110:                    InfoHolder infoholder = examineLookup(lkp);
111:                    final TreePathHandle handle = lkp
112:                            .lookup(TreePathHandle.class);
113:
114:                    Project project = FileOwnerQuery.getOwner(handle
115:                            .getFileObject());
116:                    if (project == null
117:                            || project.getLookup().lookup(
118:                                    NbModuleProvider.class) == null) {
119:                        // take just netbeans module development into account..
120:                        return null;
121:                    }
122:
123:                    if (infoholder.isClass) {
124:                        checkManifest(project, infoholder.fullName,
125:                                refactoringElements);
126:                        checkMetaInfServices(project, infoholder.fullName,
127:                                refactoringElements);
128:                        checkLayer(project, infoholder.fullName,
129:                                refactoringElements);
130:                    }
131:                    if (infoholder.isMethod) {
132:                        checkMethodLayer(infoholder, handle.getFileObject(),
133:                                refactoringElements);
134:                    }
135:                    if (infoholder.isConstructor) {
136:                        checkConstructorLayer(infoholder, handle
137:                                .getFileObject(), refactoringElements);
138:                    }
139:
140:                    err.log("Gonna return problem: " + problem);
141:                    return problem;
142:                } catch (IOException ex) {
143:                    Exceptions.printStackTrace(ex);
144:                    return null;
145:                } finally {
146:                    semafor.set(null);
147:                }
148:            }
149:
150:            protected RefactoringElementImplementation createManifestRefactoring(
151:                    String fqname, FileObject manifestFile,
152:                    String attributeKey, String attributeValue, String section) {
153:                return new ManifestSafeDeleteRefactoringElement(manifestFile,
154:                        attributeValue, attributeKey, section);
155:            }
156:
157:            protected RefactoringElementImplementation createMetaInfServicesRefactoring(
158:                    String clazz, FileObject serviceFile, int line) {
159:                return new ServicesSafeDeleteRefactoringElement(clazz,
160:                        serviceFile);
161:            }
162:
163:            protected RefactoringElementImplementation createConstructorLayerRefactoring(
164:                    String constructor, String fqname,
165:                    LayerUtils.LayerHandle handle, FileObject layerFileObject,
166:                    String layerAttribute) {
167:                return new LayerSafeDeleteRefactoringElement(constructor,
168:                        handle, layerFileObject);
169:
170:            }
171:
172:            protected RefactoringElementImplementation createLayerRefactoring(
173:                    String fqname, LayerUtils.LayerHandle handle,
174:                    FileObject layerFileObject, String layerAttribute) {
175:                return new LayerSafeDeleteRefactoringElement(fqname, handle,
176:                        layerFileObject, layerAttribute);
177:
178:            }
179:
180:            protected RefactoringElementImplementation createMethodLayerRefactoring(
181:                    String method, String fqname,
182:                    LayerUtils.LayerHandle handle, FileObject layerFileObject,
183:                    String layerAttribute) {
184:                return new LayerSafeDeleteRefactoringElement(method, handle,
185:                        layerFileObject);
186:            }
187:
188:            public final class ManifestSafeDeleteRefactoringElement extends
189:                    AbstractRefactoringElement {
190:
191:                private String attrName;
192:                private String sectionName = null;
193:                private String oldContent;
194:
195:                public ManifestSafeDeleteRefactoringElement(
196:                        FileObject parentFile, String attributeValue,
197:                        String attributeName) {
198:                    this .name = attributeValue;
199:                    this .parentFile = parentFile;
200:                    attrName = attributeName;
201:                    // read old content here. in the unprobable case when 2 classes are to be removed
202:                    // and both are placed in same services file, we need the true original content
203:                    oldContent = Utility.readFileIntoString(parentFile);
204:                }
205:
206:                public ManifestSafeDeleteRefactoringElement(
207:                        FileObject parentFile, String attributeValue,
208:                        String attributeName, String secName) {
209:                    this (parentFile, attributeValue, attributeName);
210:                    sectionName = secName;
211:                }
212:
213:                /** Returns text describing the refactoring formatted for display (using HTML tags).
214:                 * @return Formatted text.
215:                 */
216:                public String getDisplayText() {
217:                    if (sectionName != null) {
218:                        return NbBundle.getMessage(
219:                                NbSafeDeleteRefactoringPlugin.class,
220:                                "TXT_ManifestSectionDelete", this .name,
221:                                sectionName);
222:                    }
223:                    return NbBundle.getMessage(
224:                            NbSafeDeleteRefactoringPlugin.class,
225:                            "TXT_ManifestDelete", this .name, attrName);
226:                }
227:
228:                public void performChange() {
229:                    FileLock lock = null;
230:                    OutputStream stream = null;
231:                    InputStream instream = null;
232:
233:                    try {
234:                        instream = parentFile.getInputStream();
235:                        EditableManifest manifest = new EditableManifest(
236:                                instream);
237:                        instream.close();
238:                        instream = null;
239:                        if (sectionName != null) {
240:                            manifest.removeSection(name);
241:                        } else {
242:                            manifest.removeAttribute(attrName, null);
243:                        }
244:                        lock = parentFile.lock();
245:                        stream = parentFile.getOutputStream(lock);
246:                        manifest.write(stream);
247:                    } catch (FileNotFoundException ex) {
248:                        //TODO
249:                        err.notify(ex);
250:                    } catch (IOException exc) {
251:                        //TODO
252:                        err.notify(exc);
253:                    } finally {
254:                        if (instream != null) {
255:                            try {
256:                                instream.close();
257:                            } catch (IOException ex) {
258:                                err.notify(ex);
259:                            }
260:                        }
261:                        if (stream != null) {
262:                            try {
263:                                stream.close();
264:                            } catch (IOException ex) {
265:                                err.notify(ex);
266:                            }
267:                        }
268:                        if (lock != null) {
269:                            lock.releaseLock();
270:                        }
271:                    }
272:                }
273:
274:                public void undoChange() {
275:                    if (oldContent != null) {
276:                        Utility.writeFileFromString(parentFile, oldContent);
277:                    }
278:                }
279:
280:            }
281:
282:            public final class ServicesSafeDeleteRefactoringElement extends
283:                    AbstractRefactoringElement {
284:
285:                private String oldName;
286:                private String oldContent;
287:                private File parent;
288:
289:                /**
290:                 * Creates a new instance of ServicesRenameRefactoringElement
291:                 */
292:                public ServicesSafeDeleteRefactoringElement(String fqname,
293:                        FileObject file) {
294:                    this .name = fqname.substring(fqname.lastIndexOf('.'));
295:                    parentFile = file;
296:                    oldName = fqname;
297:                    // read old content here. in the unprobable case when 2 classes are to be removed
298:                    // and both are placed in same services file, we need the true original content
299:                    oldContent = Utility.readFileIntoString(parentFile);
300:                    parent = FileUtil.toFile(parentFile);
301:                }
302:
303:                /** Returns text describing the refactoring formatted for display (using HTML tags).
304:                 * @return Formatted text.
305:                 */
306:                public String getDisplayText() {
307:                    return NbBundle.getMessage(
308:                            NbSafeDeleteRefactoringPlugin.class,
309:                            "TXT_ServicesDelete", this .name);
310:                }
311:
312:                public void performChange() {
313:                    String content = Utility.readFileIntoString(parentFile);
314:                    if (content != null) {
315:                        String longName = oldName;
316:                        longName = longName.replaceAll("[.]", "\\."); //NOI18N
317:                        content = content.replaceAll("^" + longName
318:                                + "[ \\\n]?", ""); //NOI18N
319:                        // now check if there's more entries in the file..
320:                        boolean hasMoreThanComments = false;
321:                        StringTokenizer tok = new StringTokenizer(content, "\n"); //NOI18N
322:                        while (tok.hasMoreTokens()) {
323:                            String token = tok.nextToken().trim();
324:                            if (token.length() > 0
325:                                    && (!Pattern.matches("^[#].*", token))) { //NOI18N
326:                                hasMoreThanComments = true;
327:                                break;
328:                            }
329:                        }
330:                        if (hasMoreThanComments) {
331:                            Utility.writeFileFromString(parentFile, content);
332:                        } else {
333:                            try {
334:                                parentFile.delete();
335:                            } catch (IOException exc) {
336:                                err.notify(exc);
337:                            }
338:                        }
339:                    }
340:                }
341:
342:                public void undoChange() {
343:                    try {
344:                        if (oldContent != null) {
345:                            if (!parent.exists()) {
346:                                FileObject fo = FileUtil.toFileObject(parent
347:                                        .getParentFile());
348:                                if (fo != null) {
349:                                    parentFile = fo
350:                                            .createData(parent.getName());
351:                                }
352:                            }
353:                            Utility.writeFileFromString(parentFile, oldContent);
354:                        }
355:                    } catch (IOException exc) {
356:                        err.notify(exc);
357:                    }
358:                }
359:            }
360:
361:            public final class LayerSafeDeleteRefactoringElement extends
362:                    AbstractRefactoringElement {
363:
364:                private FileObject layerFO;
365:                private LayerUtils.LayerHandle handle;
366:
367:                private String attribute;
368:
369:                /**
370:                 * Creates a new instance of LayerRenameRefactoringElement
371:                 */
372:                public LayerSafeDeleteRefactoringElement(String name,
373:                        LayerUtils.LayerHandle handle, FileObject layerFO,
374:                        String attr) {
375:                    this (name, handle, layerFO);
376:                    attribute = attr;
377:                }
378:
379:                public LayerSafeDeleteRefactoringElement(String name,
380:                        LayerUtils.LayerHandle handle, FileObject layerFO) {
381:                    this .name = name;
382:                    this .handle = handle;
383:                    parentFile = handle.getLayerFile();
384:                    this .layerFO = layerFO;
385:                }
386:
387:                /** Returns text describing the refactoring formatted for display (using HTML tags).
388:                 * @return Formatted text.
389:                 */
390:                public String getDisplayText() {
391:                    return NbBundle.getMessage(
392:                            NbSafeDeleteRefactoringPlugin.class,
393:                            "TXT_LayerDelete", layerFO.getNameExt());
394:                }
395:
396:                public void performChange() {
397:                    boolean on = handle.isAutosave();
398:                    if (!on) {
399:                        //TODO is this a hack or not?
400:                        handle.setAutosave(true);
401:                    }
402:                    try {
403:                        if (attribute != null) {
404:                            layerFO.setAttribute(attribute, null);
405:                            if ("originalFile".equals(attribute)) {
406:                                layerFO.delete();
407:                            }
408:                        } else {
409:                            layerFO.delete();
410:                        }
411:                        deleteEmptyParent(layerFO.getParent());
412:                    } catch (IOException exc) {
413:                        ErrorManager.getDefault().notify(exc);
414:                    }
415:                    if (!on) {
416:                        handle.setAutosave(false);
417:                    }
418:
419:                }
420:
421:                private void deleteEmptyParent(FileObject parent)
422:                        throws IOException {
423:                    if (parent != null) {
424:                        if (!parent.getChildren(true).hasMoreElements()
425:                                && !parent.getAttributes().hasMoreElements()) {
426:                            FileObject parentToDel = parent.getParent();
427:                            parent.delete();
428:                            deleteEmptyParent(parentToDel);
429:                        }
430:                    }
431:                }
432:
433:                public void undoChange() {
434:                    //TODO
435:                }
436:
437:            }
438:
439:        }
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