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Package: ViewModelDeleteParticipant
ViewModelDeleteParticipant
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Coverage
1: /**
2: * Copyright (c) 2011-2019 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Eugen Neufeld - initial API and implementation
13: */
14: package org.eclipse.emf.ecp.view.model.refactoring;
15:
16: import java.io.FileWriter;
17: import java.io.IOException;
18: import java.util.regex.Matcher;
19: import java.util.regex.Pattern;
20:
21: import org.eclipse.core.resources.IFile;
22: import org.eclipse.core.resources.IResource;
23: import org.eclipse.core.runtime.Adapters;
24: import org.eclipse.core.runtime.CoreException;
25: import org.eclipse.core.runtime.IProgressMonitor;
26: import org.eclipse.core.runtime.IStatus;
27: import org.eclipse.core.runtime.OperationCanceledException;
28: import org.eclipse.core.runtime.Status;
29: import org.eclipse.emf.ecp.view.model.presentation.ContributionUtil;
30: import org.eclipse.ltk.core.refactoring.Change;
31: import org.eclipse.ltk.core.refactoring.RefactoringStatus;
32: import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
33: import org.eclipse.ltk.core.refactoring.participants.DeleteParticipant;
34: import org.eclipse.ltk.core.refactoring.participants.ResourceChangeChecker;
35:
36: /**
37: * Delete Participant for View Models.
38: * This class cleans up the plugin.xml.
39: *
40: * @author Eugen Neufeld
41: **/
42:
43: public class ViewModelDeleteParticipant extends DeleteParticipant {
44: private static final Pattern EMPTY_PLUGIN_PATTERN = Pattern.compile("<plugin>\\s*</plugin>", //$NON-NLS-1$
45: Pattern.DOTALL | Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
46:
47: private static final String EMPTY_STRING = ""; //$NON-NLS-1$
48: private static final Pattern EMPTY_XMI_EXTENSIONPOINT = Pattern.compile(
49: "<extension.*point=\"org.eclipse.emf.ecp.view.model.provider.xmi.file\">\\s*</extension>", //$NON-NLS-1$
50: Pattern.DOTALL | Pattern.MULTILINE | Pattern.CASE_INSENSITIVE);
51: private static final String ONE_LINE_FILE = "<file filePath=\"%s\"/>"; //$NON-NLS-1$
52: private static final String MULTI_LINE_FILE = "<file\\s*filePath=\"%s\">\\s*</file>"; //$NON-NLS-1$
53: private static final String REMOVE_PLUGIN_XML = "plugin.xml,?\\\\?\\s*"; //$NON-NLS-1$
54: private static final String REMOVE_FOLDER = "%s/,?\\\\?\\s*"; //$NON-NLS-1$
55: private static final String REMOVE_VIEW = "%s,?\\\\?\\s*"; //$NON-NLS-1$
56: private static final String CLEAN_PLUGIN_XML = ",\\\\\\s*$"; //$NON-NLS-1$
57:
58: /**
59: * Custom Change that removes the registered view model from the plugin.xml .
60: *
61: * @author Eugen Neufeld
62: *
63: */
64: private final class ChangeExtension extends Change {
65: @Override
66: public Change perform(IProgressMonitor pm) throws CoreException {
67:
68: try {
69: final String pluginString = ContributionUtil.parseIFile(pluginXml).get();
70: final String viewPath = viewModel.getProjectRelativePath().toString();
71:
72: final String cleanExtensionString = pluginString
73: .replaceAll(String.format(ONE_LINE_FILE, viewPath), EMPTY_STRING)
74: .replaceAll(String.format(MULTI_LINE_FILE, viewPath), EMPTY_STRING);
75:
76: final String cleanPlugin = EMPTY_XMI_EXTENSIONPOINT.matcher(cleanExtensionString)
77: .replaceAll(EMPTY_STRING);
78: final Matcher matcher = EMPTY_PLUGIN_PATTERN.matcher(cleanPlugin);
79: boolean removePluginXml = false;
80: if (!matcher.find()) {
81: final FileWriter out = new FileWriter(pluginXml.getRawLocation().makeAbsolute().toFile());
82: out.write(String.valueOf(cleanPlugin));
83: out.close();
84: } else {
85: pluginXml.delete(true, pm);
86: removePluginXml = true;
87: }
88: boolean removeFolder = false;
89: if (viewModel.getParent().members().length == 0) {
90: viewModel.getParent().delete(true, pm);
91: removeFolder = true;
92: }
93: final IFile buildProperties = viewModel.getProject().getFile("build.properties"); //$NON-NLS-1$
94: final String buildPropertiesString = ContributionUtil.parseIFile(buildProperties).get();
95: String cleanedProperties = null;
96: if (removePluginXml || removeFolder) {
97: if (removePluginXml) {
98: cleanedProperties = buildPropertiesString
99: .replaceAll(REMOVE_PLUGIN_XML, EMPTY_STRING);
100: }
101: if (removeFolder) {
102: cleanedProperties = (cleanedProperties != null ? cleanedProperties : buildPropertiesString)
103: .replaceAll(
104: String.format(REMOVE_FOLDER,
105: viewModel.getParent().getProjectRelativePath().toString()),
106: EMPTY_STRING);
107: }
108: }
109: {
110: cleanedProperties = (cleanedProperties != null ? cleanedProperties : buildPropertiesString)
111: .replaceAll(
112: String.format(REMOVE_VIEW, viewModel.getProjectRelativePath().toString()),
113: EMPTY_STRING);
114: }
115:
116: cleanedProperties = cleanedProperties.replaceAll(CLEAN_PLUGIN_XML, EMPTY_STRING);
117: final FileWriter out = new FileWriter(buildProperties.getRawLocation().makeAbsolute().toFile());
118: out.write(String.valueOf(cleanedProperties));
119: out.flush();
120: out.close();
121:
122: viewModel.getProject().refreshLocal(IResource.DEPTH_INFINITE, null);
123:
124: } catch (final IOException ex) {
125: throw new CoreException(
126: new Status(IStatus.ERROR, "org.eclipse.emf.ecp.view.model.editor", ex.getMessage(), ex)); //$NON-NLS-1$
127: }
128:
129: return null;
130: }
131:
132: @Override
133: public RefactoringStatus isValid(IProgressMonitor pm) throws CoreException, OperationCanceledException {
134: return RefactoringStatus.create(Status.OK_STATUS);
135: }
136:
137: @Override
138: public void initializeValidationData(IProgressMonitor pm) {
139: }
140:
141: @Override
142: public String getName() {
143: return "Remove view model from plugin.xml"; //$NON-NLS-1$
144: }
145:
146: @Override
147: public Object getModifiedElement() {
148: return null;
149: }
150: }
151:
152: private IFile viewModel;
153: private IFile pluginXml;
154:
155: /**
156: * Default constructor.
157: */
158: public ViewModelDeleteParticipant() {
159: }
160:
161: @Override
162: protected boolean initialize(Object element) {
163: viewModel = Adapters.adapt(element, IFile.class);
164: pluginXml = viewModel.getProject().getFile("plugin.xml"); //$NON-NLS-1$
165:
166:• return viewModel != null && pluginXml.exists();
167: }
168:
169: @Override
170: public String getName() {
171: return "Clean up after View Model Removal"; //$NON-NLS-1$
172: }
173:
174: @Override
175: public RefactoringStatus checkConditions(IProgressMonitor pm, CheckConditionsContext context)
176: throws OperationCanceledException {
177: final ResourceChangeChecker resourceChecker = context.getChecker(ResourceChangeChecker.class);
178:• if (resourceChecker != null) {
179: try {
180: final RefactoringStatus result = resourceChecker.check(pm);
181: final String projectInfo = "Remove view model from plugin.xml"; //$NON-NLS-1$
182: result.addInfo(projectInfo);
183: return result;
184: } catch (final CoreException e) {
185: return RefactoringStatus.create(e.getStatus());
186: }
187: }
188:
189: return new RefactoringStatus();
190: }
191:
192: @Override
193: public Change createChange(IProgressMonitor pm) throws CoreException, OperationCanceledException {
194: return new ChangeExtension();
195: }
196:
197: }