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/*******************************************************************************
* Copyright (c) 2000, 2003 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Common Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/cpl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ccvs.ui.actions;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.compare.CompareUI;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.operation.IRunnableWithProgress;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.internal.ccvs.core.CVSException;
import org.eclipse.team.internal.ccvs.core.ICVSRemoteFile;
import org.eclipse.team.internal.ccvs.core.ICVSResource;
import org.eclipse.team.internal.ccvs.core.ILogEntry;
import org.eclipse.team.internal.ccvs.core.resources.CVSWorkspaceRoot;
import org.eclipse.team.internal.ccvs.ui.CVSCompareRevisionsInput;
import org.eclipse.team.internal.ccvs.ui.Policy;
import org.eclipse.team.ui.synchronize.viewers.ParticipantCompareDialog;
/**
* Compare with revision will allow a user to browse the history of a file, compare with the
* other revisions and merge changes from other revisions into the workspace copy.
*/
public class CompareWithRevisionAction extends WorkspaceAction {
/**
* Returns the selected remote file
*/
protected ICVSRemoteFile getSelectedRemoteFile() {
IResource[] resources = getSelectedResources();
if (resources.length != 1) return null;
if (!(resources[0] instanceof IFile)) return null;
IFile file = (IFile)resources[0];
try {
return (ICVSRemoteFile)CVSWorkspaceRoot.getRemoteResourceFor(file);
} catch (TeamException e) {
handle(e, null, null);
return null;
}
}
/*
* @see CVSAction#execute(IAction)
*/
public void execute(IAction action) throws InvocationTargetException, InterruptedException {
// Setup holders
final ICVSRemoteFile[] file = new ICVSRemoteFile[] { null };
final ILogEntry[][] entries = new ILogEntry[][] { null };
// Get the selected file
run(new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InvocationTargetException {
file[0] = getSelectedRemoteFile();
}
}, false /* cancelable */, PROGRESS_BUSYCURSOR);
if (file[0] == null) {
// No revisions for selected file
MessageDialog.openWarning(getShell(), Policy.bind("CompareWithRevisionAction.noRevisions"), Policy.bind("CompareWithRevisionAction.noRevisionsLong")); //$NON-NLS-1$ //$NON-NLS-2$
return;
}
// Fetch the log entries
run(new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InvocationTargetException {
try {
monitor.beginTask(Policy.bind("CompareWithRevisionAction.fetching"), 100); //$NON-NLS-1$
entries[0] = file[0].getLogEntries(Policy.subMonitorFor(monitor, 100));
monitor.done();
} catch (TeamException e) {
throw new InvocationTargetException(e);
}
}
}, true /* cancelable */, PROGRESS_DIALOG);
if (entries[0] == null) return;
// Show the compare viewer
run(new IRunnableWithProgress() {
public void run(IProgressMonitor monitor) throws InterruptedException, InvocationTargetException {
CVSCompareRevisionsInput input = new CVSCompareRevisionsInput((IFile)getSelectedResources()[0], entries[0]);
// running with a null progress monitor is fine because we have already pre-fetched the log entries above.
input.run(new NullProgressMonitor());
ParticipantCompareDialog cd = createCompareDialog(getShell(), input);
cd.setBlockOnOpen(true);
cd.open();
}
}, false /* cancelable */, PROGRESS_BUSYCURSOR);
}
/**
* Return the compare dialog to use to show the compare input.
*/
protected ParticipantCompareDialog createCompareDialog(Shell shell, CVSCompareRevisionsInput input) {
return new ParticipantCompareDialog(getShell(), "Compare With Revision", input);
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.actions.CVSAction#getErrorTitle()
*/
protected String getErrorTitle() {
return Policy.bind("CompareWithRevisionAction.compare"); //$NON-NLS-1$
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.actions.WorkspaceAction#isEnabledForCVSResource(org.eclipse.team.internal.ccvs.core.ICVSResource)
*/
protected boolean isEnabledForCVSResource(ICVSResource cvsResource) throws CVSException {
return (!cvsResource.isFolder() && super.isEnabledForCVSResource(cvsResource));
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.actions.WorkspaceAction#isEnabledForMultipleResources()
*/
protected boolean isEnabledForMultipleResources() {
return false;
}
/* (non-Javadoc)
* @see org.eclipse.team.internal.ccvs.ui.actions.WorkspaceAction#isEnabledForAddedResources()
*/
protected boolean isEnabledForAddedResources() {
return false;
}
}
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