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/*******************************************************************************
* Copyright (c) 2006, 2010 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ui.actions;
import org.eclipse.compare.*;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.util.OpenStrategy;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.core.history.provider.FileRevision;
import org.eclipse.team.internal.core.history.LocalFileRevision;
import org.eclipse.team.internal.ui.*;
import org.eclipse.team.internal.ui.history.*;
import org.eclipse.team.ui.history.HistoryPage;
import org.eclipse.team.ui.synchronize.SaveableCompareEditorInput;
import org.eclipse.ui.*;
import org.eclipse.ui.actions.BaseSelectionListenerAction;
public class CompareRevisionAction extends BaseSelectionListenerAction {
HistoryPage page;
IStructuredSelection selection;
IFileRevision currentFileRevision;
public CompareRevisionAction(String text, HistoryPage page) {
super(text);
this.page = page;
}
public CompareRevisionAction(HistoryPage page) {
this(TeamUIMessages.LocalHistoryPage_CompareAction, page);
}
@Override
public void run() {
IStructuredSelection structSel = selection;
if (structSel == null)
return;
Object[] objArray = structSel.toArray();
IFileRevision file1 = null;
IFileRevision file2 = null;
switch (structSel.size()){
case 1:
file1 = getCurrentFileRevision();
Object tempRevision = objArray[0];
if (tempRevision instanceof IFileRevision) {
file2 = (IFileRevision) tempRevision;
} else {
return;
}
break;
case 2:
Object tempRevision2 = objArray[0];
Object tempRevision3 = objArray[1];
if (tempRevision2 instanceof IFileRevision &&
tempRevision3 instanceof IFileRevision){
file1 = (IFileRevision) objArray[0];
file2 = (IFileRevision) objArray[1];
} else {
return;
}
break;
}
if (file1 == null || file2 == null ||
!file1.exists() || !file2.exists()){
MessageDialog.openError(page.getSite().getShell(), TeamUIMessages.OpenRevisionAction_DeletedRevTitle, TeamUIMessages.CompareRevisionAction_DeleteCompareMessage);
return;
}
IResource resource = getResource(file2);
if (resource != null) {
IFileRevision temp = file1;
file1 = file2;
file2 = temp;
}
ITypedElement left;
resource = getResource(file1);
if (resource != null) {
left = getElementFor(resource);
} else {
left = new FileRevisionTypedElement(file1, getLocalEncoding());
}
ITypedElement right = new FileRevisionTypedElement(file2, getLocalEncoding());
openInCompare(left, right);
}
private String getLocalEncoding() {
IResource resource = getResource(getCurrentFileRevision());
if (resource instanceof IFile) {
IFile file = (IFile) resource;
try {
return file.getCharset();
} catch (CoreException e) {
TeamUIPlugin.log(e);
}
}
return null;
}
protected ITypedElement getElementFor(IResource resource) {
return SaveableCompareEditorInput.createFileElement((IFile)resource);
}
private void openInCompare(ITypedElement left, ITypedElement right) {
CompareEditorInput input = createCompareEditorInput(left, right, page.getSite().getPage());
IWorkbenchPage workBenchPage = page.getSite().getPage();
IEditorPart editor = Utils.findReusableCompareEditor(input,
workBenchPage,
new Class[] { CompareFileRevisionEditorInput.class });
if (editor != null) {
IEditorInput otherInput = editor.getEditorInput();
if (otherInput.equals(input)) {
// simply provide focus to editor
if (OpenStrategy.activateOnOpen())
workBenchPage.activate(editor);
else
workBenchPage.bringToTop(editor);
} else {
// if editor is currently not open on that input either re-use
// existing
CompareUI.reuseCompareEditor(input, (IReusableEditor) editor);
if (OpenStrategy.activateOnOpen())
workBenchPage.activate(editor);
else
workBenchPage.bringToTop(editor);
}
} else {
CompareUI.openCompareEditor(input, OpenStrategy.activateOnOpen());
}
}
protected CompareFileRevisionEditorInput createCompareEditorInput(
ITypedElement left, ITypedElement right, IWorkbenchPage page) {
return new CompareFileRevisionEditorInput(left,
right, page);
}
private IResource getResource(IFileRevision revision) {
if (revision instanceof LocalFileRevision) {
LocalFileRevision local = (LocalFileRevision) revision;
return local.getFile();
}
return null;
}
private IFileRevision getCurrentFileRevision() {
return currentFileRevision;
}
public void setCurrentFileRevision(IFileRevision fileRevision){
this.currentFileRevision = fileRevision;
}
/**
* DO NOT REMOVE, used in a product.
*
* @deprecated As of 3.5, replaced by
* {@link Utils#findReusableCompareEditor(CompareEditorInput, IWorkbenchPage, Class[])}
*/
@SuppressWarnings("javadoc")
@Deprecated
public static IEditorPart findReusableCompareEditor(IWorkbenchPage workbenchPage) {
return Utils.findReusableCompareEditor(null, workbenchPage,
new Class[] { CompareFileRevisionEditorInput.class });
}
@Override
protected boolean updateSelection(IStructuredSelection selection) {
this.selection = selection;
if (selection.size() == 1){
Object el = selection.getFirstElement();
if (el instanceof LocalFileRevision)
this.setText(TeamUIMessages.CompareRevisionAction_Local);
else if (el instanceof FileRevision){
FileRevision tempFileRevision = (FileRevision) el;
this.setText(NLS.bind(TeamUIMessages.CompareRevisionAction_Revision, new String[]{tempFileRevision.getContentIdentifier()}));
}
else
this.setText(TeamUIMessages.CompareRevisionAction_CompareWithCurrent);
return shouldShow();
}
else if (selection.size() == 2){
this.setText(TeamUIMessages.CompareRevisionAction_CompareWithOther);
return shouldShow();
}
return false;
}
private boolean shouldShow() {
IStructuredSelection structSel = selection;
Object[] objArray = structSel.toArray();
if (objArray.length == 0)
return false;
for (int i = 0; i < objArray.length; i++) {
//Don't bother showing if this a category
if (objArray[i] instanceof AbstractHistoryCategory)
return false;
IFileRevision revision = (IFileRevision) objArray[i];
//check to see if any of the selected revisions are deleted revisions
if (revision != null && !revision.exists())
return false;
}
return true;
}
}
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