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1
11
12 package org.eclipse.team.internal.ui.actions;
13
14 import org.eclipse.compare.*;
15 import org.eclipse.core.resources.IFile;
16 import org.eclipse.core.resources.IResource;
17 import org.eclipse.core.runtime.CoreException;
18 import org.eclipse.jface.dialogs.MessageDialog;
19 import org.eclipse.jface.viewers.IStructuredSelection;
20 import org.eclipse.osgi.util.NLS;
21 import org.eclipse.team.core.history.IFileRevision;
22 import org.eclipse.team.core.history.provider.FileRevision;
23 import org.eclipse.team.internal.core.history.LocalFileRevision;
24 import org.eclipse.team.internal.ui.TeamUIMessages;
25 import org.eclipse.team.internal.ui.TeamUIPlugin;
26 import org.eclipse.team.internal.ui.history.*;
27 import org.eclipse.team.ui.history.HistoryPage;
28 import org.eclipse.team.ui.synchronize.SaveableCompareEditorInput;
29 import org.eclipse.ui.*;
30 import org.eclipse.ui.actions.BaseSelectionListenerAction;
31
32 public class CompareRevisionAction extends BaseSelectionListenerAction {
33
34 HistoryPage page;
35 IStructuredSelection selection;
36 IFileRevision currentFileRevision;
37
38 public CompareRevisionAction(String  text) {
39 super(text);
40 }
41
42 public CompareRevisionAction() {
43 this(TeamUIMessages.LocalHistoryPage_CompareAction);
44 }
45
46 public void run() {
47 IStructuredSelection structSel = selection;
48 Object [] objArray = structSel.toArray();
49
50 IFileRevision file1 = null;
51 IFileRevision file2 = null;
52
53 switch (structSel.size()){
54 case 1:
55 file1 = getCurrentFileRevision();
56 Object tempRevision = objArray[0];
57 if (tempRevision instanceof IFileRevision)
58 file2 = (IFileRevision) tempRevision;
59 else
60 return;
61 break;
62
63 case 2:
64 Object tempRevision2 = objArray[0];
65 Object tempRevision3 = objArray[1];
66
67 if (tempRevision2 instanceof IFileRevision &&
68 tempRevision3 instanceof IFileRevision){
69 file1 = (IFileRevision) objArray[0];
70 file2 = (IFileRevision) objArray[1];
71 } else
72 return;
73 break;
74 }
75
76 if (file1 == null || file2 == null ||
77 !file1.exists() || !file2.exists()){
78 MessageDialog.openError(page.getSite().getShell(), TeamUIMessages.OpenRevisionAction_DeletedRevTitle, TeamUIMessages.CompareRevisionAction_DeleteCompareMessage);
79 return;
80 }
81
82 IResource resource = getResource(file2);
83 if (resource != null) {
84 IFileRevision temp = file1;
85 file1 = file2;
86 file2 = temp;
87 }
88 ITypedElement left;
89 resource = getResource(file1);
90 if (resource != null) {
91 left = getElementFor(resource);
92 } else {
93 left = new FileRevisionTypedElement(file1, getLocalEncoding());
94 }
95 ITypedElement right = new FileRevisionTypedElement(file2, getLocalEncoding());
96
97 openInCompare(left, right);
98 }
99
100 private String getLocalEncoding() {
101 IResource resource = getResource(getCurrentFileRevision());
102 if (resource instanceof IFile) {
103 IFile file = (IFile) resource;
104 try {
105 return file.getCharset();
106 } catch (CoreException e) {
107 TeamUIPlugin.log(e);
108 }
109 }
110 return null;
111 }
112
113 protected ITypedElement getElementFor(IResource resource) {
114 return SaveableCompareEditorInput.createFileElement((IFile)resource);
115 }
116
117 private void openInCompare(ITypedElement left, ITypedElement right) {
118 CompareEditorInput input = createCompareEditorInput(left, right, page.getSite().getPage());
119 IWorkbenchPage workBenchPage = page.getSite().getPage();
120 IEditorPart editor = findReusableCompareEditor(workBenchPage);
121 if (editor != null) {
122 IEditorInput otherInput = editor.getEditorInput();
123 if (otherInput.equals(input)) {
124 workBenchPage.activate(editor);
126 } else {
127 CompareUI.reuseCompareEditor(input, (IReusableEditor) editor);
130 workBenchPage.activate(editor);
131 }
132 } else {
133 CompareUI.openCompareEditor(input);
134 }
135 }
136
137 protected CompareFileRevisionEditorInput createCompareEditorInput(
138 ITypedElement left, ITypedElement right, IWorkbenchPage page) {
139 return new CompareFileRevisionEditorInput(left,
140 right, page);
141 }
142
143 private IResource getResource(IFileRevision revision) {
144 if (revision instanceof LocalFileRevision) {
145 LocalFileRevision local = (LocalFileRevision) revision;
146 return local.getFile();
147 }
148 return null;
149 }
150
151 private IFileRevision getCurrentFileRevision() {
152 return currentFileRevision;
153 }
154
155 public void setCurrentFileRevision(IFileRevision fileRevision){
156 this.currentFileRevision = fileRevision;
157 }
158
159
165 public static IEditorPart findReusableCompareEditor(IWorkbenchPage page) {
166 IEditorReference[] editorRefs = page.getEditorReferences();
167 for (int i = 0; i < editorRefs.length; i++) {
168 IEditorPart part = editorRefs[i].getEditor(false);
169 if(part != null
170 && (part.getEditorInput() instanceof CompareFileRevisionEditorInput)
171 && part instanceof IReusableEditor) {
172 if(! part.isDirty()) {
173 return part;
174 }
175 }
176 }
177 return null;
178 }
179
180 protected boolean updateSelection(IStructuredSelection selection) {
181 this.selection = selection;
182 if (selection.size() == 1){
183 Object el = selection.getFirstElement();
184 if (el instanceof LocalFileRevision)
185 this.setText(TeamUIMessages.CompareRevisionAction_Local);
186 else if (el instanceof FileRevision){
187 FileRevision tempFileRevision = (FileRevision) el;
188 this.setText(NLS.bind(TeamUIMessages.CompareRevisionAction_Revision, new String []{tempFileRevision.getContentIdentifier()}));
189 }
190 else
191 this.setText(TeamUIMessages.CompareRevisionAction_CompareWithCurrent);
192 return shouldShow();
193 }
194 else if (selection.size() == 2){
195 this.setText(TeamUIMessages.CompareRevisionAction_CompareWithOther);
196 return shouldShow();
197 }
198
199 return false;
200 }
201 public void setPage(HistoryPage page) {
202 this.page = page;
203 }
204
205 private boolean shouldShow() {
206 IStructuredSelection structSel = selection;
207 Object [] objArray = structSel.toArray();
208
209 if (objArray.length == 0)
210 return false;
211
212 for (int i = 0; i < objArray.length; i++) {
213
214 if (objArray[i] instanceof AbstractHistoryCategory)
216 return false;
217
218 IFileRevision revision = (IFileRevision) objArray[i];
219 if (revision != null && !revision.exists())
221 return false;
222 }
223
224 return true;
225 }
226
227 }
228 |
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