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/*******************************************************************************
 * Copyright (c) 2004, 2010 Tasktop Technologies 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:
 *     Tasktop Technologies - initial API and implementation
 *******************************************************************************/

package org.eclipse.mylyn.internal.tasks.ui.wizards;

import java.lang.reflect.InvocationTargetException;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.wizard.Wizard;
import org.eclipse.mylyn.commons.core.StatusHandler;
import org.eclipse.mylyn.internal.tasks.core.LocalRepositoryConnector;
import org.eclipse.mylyn.internal.tasks.core.TaskRepositoryDelta;
import org.eclipse.mylyn.internal.tasks.core.TaskRepositoryDelta.Type;
import org.eclipse.mylyn.internal.tasks.ui.RefactorRepositoryUrlOperation;
import org.eclipse.mylyn.internal.tasks.ui.TasksUiPlugin;
import org.eclipse.mylyn.tasks.core.TaskRepository;
import org.eclipse.mylyn.tasks.ui.AbstractRepositoryConnectorUi;
import org.eclipse.mylyn.tasks.ui.TasksUi;
import org.eclipse.mylyn.tasks.ui.TasksUiImages;
import org.eclipse.mylyn.tasks.ui.wizards.AbstractRepositorySettingsPage;
import org.eclipse.mylyn.tasks.ui.wizards.ITaskRepositoryPage;
import org.eclipse.ui.INewWizard;
import org.eclipse.ui.IWorkbench;

/**
 * @author Mik Kersten
 */
public class EditRepositoryWizard extends Wizard implements INewWizard {

	private ITaskRepositoryPage settingsPage;

	private final TaskRepository repository;

	public EditRepositoryWizard(TaskRepository repository) {
		this.repository = repository;
		setNeedsProgressMonitor(true);
		setDefaultPageImageDescriptor(TasksUiImages.BANNER_REPOSITORY_SETTINGS);
		setWindowTitle(Messages.EditRepositoryWizard_Properties_for_Task_Repository);
	}

	/**
	 * Custom properties should be set on the repository object to ensure they are saved.
	 */
	@Override
	public boolean performFinish() {
		if (canFinish()) {
			String oldUrl = repository.getRepositoryUrl();
			String newUrl = settingsPage.getRepositoryUrl();
			if (oldUrl != null && newUrl != null && !oldUrl.equals(newUrl)) {
				TasksUi.getTaskActivityManager().deactivateActiveTask();

				RefactorRepositoryUrlOperation operation = new RefactorRepositoryUrlOperation(oldUrl, newUrl);
				try {
					getContainer().run(true, false, operation);
				} catch (InvocationTargetException e) {
					StatusHandler.fail(new Status(IStatus.WARNING, TasksUiPlugin.ID_PLUGIN,
							Messages.EditRepositoryWizard_Failed_to_refactor_repository_urls));
					return false;
				} catch (InterruptedException e) {
					// should not get here
				}
			}

			if (!repository.getConnectorKind().equals(LocalRepositoryConnector.CONNECTOR_KIND)) {
				repository.setRepositoryUrl(newUrl);
			}
			settingsPage.applyTo(repository);
			if (oldUrl != null && newUrl != null && !oldUrl.equals(newUrl)) {
				TasksUiPlugin.getRepositoryManager().notifyRepositoryUrlChanged(repository, oldUrl);
			}
			TasksUiPlugin.getRepositoryManager().notifyRepositorySettingsChanged(repository,
					new TaskRepositoryDelta(Type.ALL));
			TasksUiPlugin.getExternalizationManager().requestSave();
			return true;
		}
		return false;
	}

	public void init(IWorkbench workbench, IStructuredSelection selection) {
	}

	@Override
	public void addPages() {
		AbstractRepositoryConnectorUi connectorUi = TasksUiPlugin.getConnectorUi(repository.getConnectorKind());
		settingsPage = connectorUi.getSettingsPage(repository);
		if (settingsPage instanceof AbstractRepositorySettingsPage) {
			((AbstractRepositorySettingsPage) settingsPage).setRepository(repository);
			((AbstractRepositorySettingsPage) settingsPage).setVersion(repository.getVersion());
		}
		settingsPage.setWizard(this);
		addPage(settingsPage);
	}

	@Override
	public boolean canFinish() {
		return settingsPage.isPageComplete();
	}

	/** public for testing */
	public ITaskRepositoryPage getSettingsPage() {
		return settingsPage;
	}

	public TaskRepository getRepository() {
		return repository;
	}
}

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