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/*******************************************************************************
* Copyright (c) 2008, 2010 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.ui.actions;
import java.lang.reflect.InvocationTargetException;
import org.eclipse.compare.*;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.*;
import org.eclipse.team.internal.ui.TeamUIMessages;
import org.eclipse.team.internal.ui.Utils;
import org.eclipse.team.internal.ui.history.CompareFileRevisionEditorInput;
import org.eclipse.team.internal.ui.synchronize.SaveablesCompareEditorInput;
import org.eclipse.ui.*;
public class CompareAction extends TeamAction {
@Override
protected void execute(IAction action) throws InvocationTargetException,
InterruptedException {
IResource[] selectedResources = getSelectedResources();
ITypedElement ancestor = null;
ITypedElement left = null;
ITypedElement right = null;
if (selectedResources.length == 2) {
if (selectedResources[0] != null)
left = getElementFor(selectedResources[0]);
if (selectedResources[1] != null)
right = getElementFor(selectedResources[1]);
} else if (selectedResources.length == 3) {
// prompt for ancestor
SelectAncestorDialog dialog = new SelectAncestorDialog(getShell(),
selectedResources);
int code = dialog.open();
if (code != Window.OK)
return;
ancestor = getElementFor(dialog.ancestorResource);
left = getElementFor(dialog.leftResource);
right = getElementFor(dialog.rightResource);
} else {
return;
}
openInCompare(ancestor, left, right);
}
private void openInCompare(ITypedElement ancestor, ITypedElement left,
ITypedElement right) {
IWorkbenchPage workBenchPage = getTargetPage();
CompareEditorInput input = new SaveablesCompareEditorInput(ancestor,
left, right, workBenchPage);
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
workBenchPage.activate(editor);
} else {
// if editor is currently not open on that input either re-use
// existing
CompareUI.reuseCompareEditor(input, (IReusableEditor) editor);
workBenchPage.activate(editor);
}
} else {
CompareUI.openCompareEditor(input);
}
}
@Override
public boolean isEnabled() {
int l = getSelectedResources().length;
return l == 2 || l == 3;
}
private ITypedElement getElementFor(IResource resource) {
return SaveablesCompareEditorInput.createFileElement((IFile) resource);
}
// see
// org.eclipse.compare.internal.ResourceCompareInput.SelectAncestorDialog
private class SelectAncestorDialog extends MessageDialog {
private IResource[] theResources;
IResource ancestorResource;
IResource leftResource;
IResource rightResource;
private Button[] buttons;
public SelectAncestorDialog(Shell parentShell, IResource[] theResources) {
super(parentShell, TeamUIMessages.SelectAncestorDialog_title, null,
TeamUIMessages.SelectAncestorDialog_message,
MessageDialog.QUESTION, new String[] {
IDialogConstants.OK_LABEL,
IDialogConstants.CANCEL_LABEL }, 0);
this.theResources = theResources;
}
@Override
protected Control createCustomArea(Composite parent) {
Composite composite = new Composite(parent, SWT.NONE);
composite.setLayout(new GridLayout());
buttons = new Button[3];
for (int i = 0; i < 3; i++) {
buttons[i] = new Button(composite, SWT.RADIO);
buttons[i].addSelectionListener(selectionListener);
buttons[i].setText(NLS.bind(
TeamUIMessages.SelectAncestorDialog_option,
theResources[i].getFullPath().toPortableString()));
buttons[i].setFont(parent.getFont());
// set initial state
buttons[i].setSelection(i == 0);
}
pickAncestor(0);
return composite;
}
private void pickAncestor(int i) {
ancestorResource = theResources[i];
leftResource = theResources[i == 0 ? 1 : 0];
rightResource = theResources[i == 2 ? 1 : 2];
}
private SelectionListener selectionListener = new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {
Button selectedButton = (Button) e.widget;
if (!selectedButton.getSelection())
return;
for (int i = 0; i < 3; i++)
if (selectedButton == buttons[i])
pickAncestor(i);
}
};
}
}
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