/*******************************************************************************
* Copyright (c) 2010 SAP AG.
* Copyright (C) 2013 Robin Rosenberg
* 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:
* Mathias Kinzler (SAP AG) - initial implementation
*******************************************************************************/
package org.eclipse.egit.ui.internal.repository;
import java.io.IOException;
import org.eclipse.egit.ui.UIUtils;
import org.eclipse.egit.ui.internal.UIIcons;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jface.wizard.WizardPage;
import org.eclipse.jgit.api.ResetCommand.ResetType;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.CLabel;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
/**
* Asks the user for a {@link ResetType}
*/
public class SelectResetTypePage extends WizardPage {
private ResetType resetType = ResetType.MIXED;
private final Repository repo;
private final String current;
private final String target;
/**
* @param repoName
* the repository name
* @param repository
* the repository being reset
* @param currentRef
* current ref (which will be overwritten)
* @param targetRef
* target ref (which contains the new content)
*/
public SelectResetTypePage(String repoName, Repository repository,
String currentRef, String targetRef) {
super(SelectResetTypePage.class.getName());
setTitle(NLS.bind(UIText.SelectResetTypePage_PageTitle, repoName));
setMessage(UIText.SelectResetTypePage_PageMessage);
repo = repository;
current = currentRef;
target = targetRef;
}
private Image getIcon(final String ref) {
if (ref.startsWith(Constants.R_TAGS))
return UIIcons.TAG.createImage();
else if (ref.startsWith(Constants.R_HEADS)
|| ref.startsWith(Constants.R_REMOTES))
return UIIcons.BRANCH.createImage();
else
return UIIcons.CHANGESET.createImage();
}
private boolean isCommit(final String ref) {
return !ref.startsWith(Constants.R_REFS);
}
private String formatCommit(final RevCommit commit) {
return commit.abbreviate(7).name() + ": " + commit.getShortMessage(); //$NON-NLS-1$
}
private RevCommit getLatestCommit(String branch) {
ObjectId resolved;
try {
resolved = repo.resolve(branch);
} catch (IOException e) {
return null;
}
if (resolved == null)
return null;
try (RevWalk walk = new RevWalk(repo)) {
walk.setRetainBody(true);
return walk.parseCommit(resolved);
} catch (IOException ignored) {
return null;
}
}
@Override
public void createControl(Composite parent) {
Composite displayArea = new Composite(parent, SWT.NONE);
GridLayoutFactory.fillDefaults().numColumns(2).equalWidth(false)
.applyTo(displayArea);
GridDataFactory.fillDefaults().grab(true, true).applyTo(displayArea);
RevCommit currentCommit = getLatestCommit(current);
Label currentLabel = new Label(displayArea, SWT.NONE);
currentLabel.setText(UIText.SelectResetTypePage_labelCurrentHead);
currentLabel
.setToolTipText(UIText.SelectResetTypePage_tooltipCurrentHead);
CLabel currentValue = new CLabel(displayArea, SWT.NONE);
GridDataFactory.swtDefaults().applyTo(currentValue);
Image currentIcon = getIcon(current);
UIUtils.hookDisposal(currentValue, currentIcon);
currentValue.setImage(currentIcon);
currentValue.setText(Repository.shortenRefName(current));
if (currentCommit != null) {
if (isCommit(current))
currentValue.setText(formatCommit(currentCommit));
else {
new Label(displayArea, SWT.NONE);
CLabel commitLabel = new CLabel(displayArea, SWT.NONE);
Image commitIcon = UIIcons.CHANGESET.createImage();
UIUtils.hookDisposal(commitLabel, commitIcon);
commitLabel.setImage(commitIcon);
commitLabel.setText(formatCommit(currentCommit));
}
}
boolean resetToSelf = current.equals(target);
if (!resetToSelf) {
RevCommit targetCommit = getLatestCommit(target);
Label targetLabel = new Label(displayArea, SWT.NONE);
targetLabel.setText(UIText.SelectResetTypePage_labelResettingTo);
targetLabel
.setToolTipText(UIText.SelectResetTypePage_tooltipResettingTo);
CLabel targetValue = new CLabel(displayArea, SWT.NONE);
Image targetIcon = getIcon(target);
UIUtils.hookDisposal(targetValue, targetIcon);
targetValue.setImage(targetIcon);
targetValue.setText(Repository.shortenRefName(target));
if (targetCommit != null) {
if (isCommit(target))
targetValue.setText(formatCommit(targetCommit));
else {
new Label(displayArea, SWT.NONE);
CLabel commitLabel = new CLabel(displayArea, SWT.NONE);
Image commitIcon = UIIcons.CHANGESET.createImage();
UIUtils.hookDisposal(commitLabel, commitIcon);
commitLabel.setImage(commitIcon);
commitLabel.setText(formatCommit(targetCommit));
}
}
}
Group g = new Group(displayArea, SWT.NONE);
g.setText(UIText.ResetTargetSelectionDialog_ResetTypeGroup);
GridDataFactory.fillDefaults().grab(true, false).span(2, 1)
.indent(0, 5).applyTo(g);
GridLayoutFactory.swtDefaults().applyTo(g);
if (!resetToSelf) {
Button soft = new Button(g, SWT.RADIO);
soft.setText(UIText.ResetTargetSelectionDialog_ResetTypeSoftButton);
soft.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
if (((Button) event.widget).getSelection())
resetType = ResetType.SOFT;
}
});
}
Button medium = new Button(g, SWT.RADIO);
medium.setSelection(true);
medium.setText(resetToSelf ? UIText.ResetTargetSelectionDialog_ResetTypeHEADMixedButton : UIText.ResetTargetSelectionDialog_ResetTypeMixedButton);
medium.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
if (((Button) event.widget).getSelection())
resetType = ResetType.MIXED;
}
});
Button hard = new Button(g, SWT.RADIO);
hard.setText(resetToSelf ? UIText.ResetTargetSelectionDialog_ResetTypeHEADHardButton : UIText.ResetTargetSelectionDialog_ResetTypeHardButton);
hard.addListener(SWT.Selection, new Listener() {
@Override
public void handleEvent(Event event) {
if (((Button) event.widget).getSelection())
resetType = ResetType.HARD;
}
});
Dialog.applyDialogFont(displayArea);
setControl(displayArea);
}
/**
* @return the reset type
*/
public ResetType getResetType() {
return resetType;
}
}