org.eclipse.egit.ui.internal.dialogs.BranchRenameDialog.java Source code

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Here is the source code for org.eclipse.egit.ui.internal.dialogs.BranchRenameDialog.java

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/*******************************************************************************
 * Copyright (c) 2012 Mathias Kinzler <mathias.kinzler@sap.com>
 *
 * 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
 *******************************************************************************/
package org.eclipse.egit.ui.internal.dialogs;

import org.eclipse.core.runtime.CoreException;
import org.eclipse.egit.core.op.RenameBranchOperation;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.ValidationUtils;
import org.eclipse.jface.dialogs.IInputValidator;
import org.eclipse.jface.dialogs.TitleAreaDialog;
import org.eclipse.jface.layout.GridDataFactory;
import org.eclipse.jface.layout.GridLayoutFactory;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * Allows to rename a single branch
 */
public class BranchRenameDialog extends TitleAreaDialog {
    private final Repository repository;

    private final Ref branchToRename;

    private Text name;

    /**
     * @param parentShell
     * @param repository
     * @param branchToRename
     *            the branch; name must start with {@link Constants#R_HEADS} or
     *            {@link Constants#R_REMOTES}
     */
    public BranchRenameDialog(Shell parentShell, Repository repository, Ref branchToRename) {
        super(parentShell);
        this.repository = repository;
        this.branchToRename = branchToRename;
        setHelpAvailable(false);
    }

    @Override
    protected Control createDialogArea(Composite parent) {
        Composite main = new Composite(parent, SWT.NONE);
        GridDataFactory.fillDefaults().grab(true, true).applyTo(main);
        GridLayoutFactory.fillDefaults().numColumns(2).margins(5, 5).applyTo(main);
        new Label(main, SWT.NONE).setText(UIText.BranchRenameDialog_NewNameLabel);
        name = new Text(main, SWT.BORDER);
        GridDataFactory.fillDefaults().grab(true, false).applyTo(name);
        return main;
    }

    @Override
    public void create() {
        super.create();
        setTitle(UIText.BranchRenameDialog_Title);
        String oldName = branchToRename.getName();
        String prefix;
        if (oldName.startsWith(Constants.R_HEADS))
            prefix = Constants.R_HEADS;
        else if (oldName.startsWith(Constants.R_REMOTES))
            prefix = Constants.R_REMOTES;
        else
            prefix = null;
        String shortName = null;
        if (prefix != null) {
            shortName = Repository.shortenRefName(branchToRename.getName());
            setMessage(NLS.bind(UIText.BranchRenameDialog_Message, shortName));
            final IInputValidator inputValidator = ValidationUtils.getRefNameInputValidator(repository, prefix,
                    true);
            name.addModifyListener(new ModifyListener() {
                public void modifyText(ModifyEvent e) {
                    String error = inputValidator.isValid(name.getText());
                    setErrorMessage(error);
                    getButton(OK).setEnabled(error == null);
                }
            });
        } else
            setErrorMessage(NLS.bind(UIText.BranchRenameDialog_WrongPrefixErrorMessage, oldName));

        if (shortName != null) {
            name.setText(shortName);
            name.setSelection(0, shortName.length());
        }

        getButton(OK).setEnabled(false);
    }

    @Override
    protected void configureShell(Shell newShell) {
        super.configureShell(newShell);
        newShell.setText(UIText.BranchRenameDialog_WindowTitle);
    }

    @Override
    protected void buttonPressed(int buttonId) {
        if (buttonId == OK)
            try {
                String newName = name.getText();
                new RenameBranchOperation(repository, branchToRename, newName).execute(null);
            } catch (CoreException e) {
                Activator.handleError(UIText.BranchRenameDialog_RenameExceptionMessage, e, true);
                return;
            }
        super.buttonPressed(buttonId);
    }
}