/*******************************************************************************
 * Copyright (c) 2003, 2006 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.ui.tests.navigator;

import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

import junit.framework.TestCase;

import org.eclipse.core.commands.operations.IUndoableOperation;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IWorkspaceRoot;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.internal.navigator.filters.UpdateActiveFiltersOperation;
import org.eclipse.ui.navigator.CommonViewer;
import org.eclipse.ui.navigator.INavigatorContentDescriptor;
import org.eclipse.ui.navigator.INavigatorContentService;
import org.eclipse.ui.navigator.INavigatorSorterService;
import org.eclipse.ui.tests.navigator.extension.TestDataSorter;
import org.eclipse.ui.tests.navigator.util.TestWorkspace;

public class ProgrammaticOpenTest extends TestCase {

	public static final String COMMON_NAVIGATOR_INSTANCE_ID = "org.eclipse.ui.tests.navigator.ProgrammaticTestView"; //$NON-NLS-1$

	public static final String COMMON_NAVIGATOR_RESOURCE_EXT = "org.eclipse.ui.navigator.resourceContent"; //$NON-NLS-1$
	
	public static final String COMMON_NAVIGATOR_TEST_EXT = "org.eclipse.ui.tests.navigator.testContent"; //$NON-NLS-1$
	 
	private Set expectedChildren = new HashSet();

	private IProject project;

	private CommonViewer viewer;

	private INavigatorContentService contentService;

	protected void setUp() throws Exception {

		TestWorkspace.init();

		IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
		project = root.getProject("Test"); //$NON-NLS-1$

		expectedChildren.add(project.getFolder("src")); //$NON-NLS-1$
		expectedChildren.add(project.getFolder("bin")); //$NON-NLS-1$
		expectedChildren.add(project.getFile(".project")); //$NON-NLS-1$
		expectedChildren.add(project.getFile(".classpath")); //$NON-NLS-1$ 
		expectedChildren.add(project.getFile("model.properties")); //$NON-NLS-1$

		EditorTestHelper.showView(COMMON_NAVIGATOR_INSTANCE_ID, true);

		IWorkbenchWindow activeWindow = PlatformUI.getWorkbench()
				.getActiveWorkbenchWindow();
		IWorkbenchPage activePage = activeWindow.getActivePage();

		IViewPart commonNavigator = activePage
				.findView(COMMON_NAVIGATOR_INSTANCE_ID);
		commonNavigator.setFocus();
		viewer = (CommonViewer) commonNavigator.getAdapter(CommonViewer.class);

		contentService = viewer.getNavigatorContentService();

		IUndoableOperation updateFilters = new UpdateActiveFiltersOperation(
				viewer, new String[0], true);
		updateFilters.execute(null, null);

	}

	public void testNavigatorRootContents() throws Exception {

		assertEquals(
				"There should be no visible extensions for the programmatic viewer.", 0, 
				contentService.getVisibleExtensionIds().length);

		contentService.bindExtensions(
				new String[] { COMMON_NAVIGATOR_RESOURCE_EXT }, false);

		assertEquals(
				"There should be one visible extension for the programmatic viewer.", 1,
				contentService.getVisibleExtensionIds().length);

		contentService.getActivationService().activateExtensions(
				new String[] { COMMON_NAVIGATOR_RESOURCE_EXT }, true);

		viewer.refresh();
		viewer.expandAll();

		TreeItem[] items = viewer.getTree().getItems();

		assertTrue("There should be some items.", items.length > 0); //$NON-NLS-1$		

		assertEquals(project, items[0].getData());

		// we do this to force the rendering of the children of items[0]
		viewer
				.setSelection(new StructuredSelection(project
						.getFile(".project"))); //$NON-NLS-1$

		TreeItem[] children = items[0].getItems();

		assertEquals(expectedChildren.size(), children.length);
		for (int i = 0; i < children.length; i++) {
			assertTrue(expectedChildren.contains(children[i].getData()));
		}

	}

	public void testNavigatorExtensionEnablement() throws Exception {

		contentService.getActivationService().activateExtensions(
				new String[] {}, true);

		viewer.refresh();
		viewer.expandAll();

		TreeItem[] items = viewer.getTree().getItems();

		assertTrue("There should be NO items.", items.length == 0); //$NON-NLS-1$

		contentService.getActivationService().deactivateExtensions(
				new String[] {}, true);

		viewer.expandToLevel(2);

		items = viewer.getTree().getItems();

		assertTrue("There should be some items.", items.length > 0); //$NON-NLS-1$

	}
	

	public void testNavigatorSorterAccess() throws Exception {
		
		INavigatorSorterService sorterService = contentService.getSorterService();
		
		INavigatorContentDescriptor testDescriptor = contentService.getContentDescriptorById(COMMON_NAVIGATOR_TEST_EXT);
		
		Map sorters = sorterService.findAvailableSorters(testDescriptor);
		
		assertEquals(3, sorters.size());
		
		for (Iterator iter = sorters.entrySet().iterator(); iter.hasNext();) {
			Map.Entry entry = (Map.Entry) iter.next();
			assertTrue(entry.getValue() instanceof TestDataSorter);			
		}

	}

}