/*******************************************************************************
 * Copyright (c) 2004, 2008 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.context.ui.actions;

import org.eclipse.jface.action.Action;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.window.Window;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.mylyn.context.core.ContextCore;
import org.eclipse.mylyn.internal.context.ui.commands.AttachContextHandler;
import org.eclipse.mylyn.internal.context.ui.wizards.ContextAttachWizard;
import org.eclipse.mylyn.internal.tasks.core.AbstractTask;
import org.eclipse.mylyn.internal.tasks.ui.util.AttachmentUtil;
import org.eclipse.mylyn.internal.tasks.ui.views.TaskListView;
import org.eclipse.mylyn.tasks.core.ITask;
import org.eclipse.mylyn.tasks.core.ITask.SynchronizationState;
import org.eclipse.mylyn.tasks.ui.TasksUiImages;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IViewActionDelegate;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.PlatformUI;

/**
 * @author Mik Kersten
 * @author Rob Elves
 * @author Steffen Pingel
 * @deprecated use {@link AttachContextHandler} instead
 */
@SuppressWarnings("restriction")
@Deprecated
public class ContextAttachAction extends Action implements IViewActionDelegate {

	private ITask task;

	private static final String ID_ACTION = "org.eclipse.mylyn.context.ui.repository.task.attach"; //$NON-NLS-1$

	public ContextAttachAction() {
		setText(Messages.ContextAttachAction_Attach_);
		setToolTipText(Messages.ContextAttachAction_Attach_Task_Context);
		setId(ID_ACTION);
		setImageDescriptor(TasksUiImages.CONTEXT_ATTACH);
	}

	public void init(IViewPart view) {
		// ignore
	}

	@Override
	public void run() {
		run(this);
	}

	public void run(IAction action) {
		if (task == null) {
			return;
		} else {
			run(task);
		}
	}

	public void run(ITask task) {
		if (task.getSynchronizationState() != SynchronizationState.SYNCHRONIZED) {
			MessageDialog.openInformation(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
					Messages.ContextAttachAction_Context_Attachment,
					Messages.ContextAttachAction_Task_must_be_synchronized_before_attaching_context);
			return;
		}

		ContextAttachWizard wizard = new ContextAttachWizard(task);
		Shell shell = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell();
		if (shell != null && !shell.isDisposed()) {
			WizardDialog dialog = new WizardDialog(shell, wizard);
			dialog.create();
			dialog.setBlockOnOpen(true);
			if (dialog.open() == Window.CANCEL) {
				dialog.close();
				return;
			}
		}
	}

	public void selectionChanged(IAction action, ISelection selection) {
		AbstractTask selectedTask = TaskListView.getSelectedTask(selection);
		if (selectedTask != null) {
			task = selectedTask;
			action.setEnabled(AttachmentUtil.canUploadAttachment(task)
					&& (task.isActive() || ContextCore.getContextManager().hasContext(task.getHandleIdentifier())));
		} else {
			task = null;
			action.setEnabled(false);
		}
	}

}