/*******************************************************************************
 * Copyright (c) 2003, 2015 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
 *     Thibault Le Ouay <thibaultleouay@gmail.com> - Bug 457870
 *     Simon Scholz <simon.scholz@vogella.com> - Bug 460405
 *******************************************************************************/
package org.eclipse.ui.tests.navigator;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.core.runtime.Path;
import org.eclipse.jface.viewers.StructuredSelection;
import org.eclipse.swt.widgets.TreeItem;
import org.eclipse.ui.tests.navigator.extension.TestContentProviderNoChildren;
import org.eclipse.ui.tests.navigator.extension.TestContentProviderPipelined;
import org.junit.Test;

public class PipelineTest extends NavigatorTestBase {

	public PipelineTest() {
		_navigatorInstanceId = TEST_VIEWER_PIPELINE;
	}

	@Test
	public void testNavigatorResourceJava() throws Exception {

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

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

		// Note this test will fail showing only one if the JDT stuff
		// is not included in the executing bundles (which it normally is)
		assertEquals(
				"There should be two visible extensions for the pipeline viewer.",
				2, _contentService.getVisibleExtensionIds().length);

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

		refreshViewer();

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

		TreeItem[] rootItems = _viewer.getTree().getItems();

		assertEquals(
				"There should be " + _projectCount + " item(s).", _projectCount, rootItems.length); //$NON-NLS-1$

		assertTrue(
				"The root object should be an IJavaProject, which is IAdaptable.", rootItems[0].getData() instanceof IAdaptable); //$NON-NLS-1$

		IProject adaptedProject = ((IAdaptable) rootItems[_projectInd]
				.getData()).getAdapter(IProject.class);
		assertEquals(_project, adaptedProject);

		IFolder sourceFolder = _project.getFolder(new Path("src"));
		_viewer.add(_project, sourceFolder);

		TreeItem[] projectChildren = rootItems[_projectInd].getItems();

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

		for (int i = 0; i < projectChildren.length; i++) {
			if (projectChildren[i].getData() == sourceFolder)
				fail("The src folder should not be added as an IFolder.");
		}

		// a new project without a Java nature should add without an issue.
		IProject newProject = ResourcesPlugin.getWorkspace().getRoot()
				.getProject("New Project");
		_viewer.add(_viewer.getInput(), newProject);

		rootItems = _viewer.getTree().getItems();

		assertEquals("There should be " + (_projectCount + 1) + " items.",
				_projectCount + 1, rootItems.length);

		boolean found = false;
		for (int i = 0; i < rootItems.length && !found; i++) {
			if (rootItems[i].getData() instanceof IProject) {
				IProject newProjectFromTree = (IProject) rootItems[i].getData();
				if (newProject.equals(newProjectFromTree))
					found = true;
			}
		}
		assertTrue(found);
	}

	// Make sure problems in bad extension points are reported well
	@Test
	public void testInterceptAddThrow() throws Exception {
		_contentService.bindExtensions(new String[] {
				COMMON_NAVIGATOR_RESOURCE_EXT, TEST_CONTENT_RESOURCE_OVERRIDE},
				false);
		_contentService.getActivationService().activateExtensions(
				new String[] { COMMON_NAVIGATOR_RESOURCE_EXT,
						TEST_CONTENT_RESOURCE_OVERRIDE }, true);

		refreshViewer();

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

		IFile f = _project.getFile("newfile");

		TestContentProviderPipelined._throw = true;
		// This will throw, have to look in the log to see the message
		_viewer.add(_project, new Object[] { f });

	}

	// Bug 299661 hasChildren() does not handle overrides correctly

	private void testHasNoChildrenOverride(boolean hasChildren) throws Exception {
		TestContentProviderNoChildren._hasChildrenTrue = hasChildren;
		_contentService.bindExtensions(new String[] {
				COMMON_NAVIGATOR_RESOURCE_EXT, TEST_CONTENT_NO_CHILDREN},
				false);
		_contentService.getActivationService().activateExtensions(
				new String[] { COMMON_NAVIGATOR_RESOURCE_EXT,
						TEST_CONTENT_NO_CHILDREN }, true);

		refreshViewer();

		TreeItem[] rootItems;
		rootItems = _viewer.getTree().getItems();
		assertEquals("p1", rootItems[0].getText());
		assertEquals(hasChildren ? 1: 0, rootItems[0].getItems().length);

		_viewer.expandAll();
		rootItems = _viewer.getTree().getItems();
		assertEquals(0, rootItems[0].getItems().length);
	}

	@Test
	public void testHasNoChildrenOverrideHasChildren() throws Exception {
		testHasNoChildrenOverride(true);
	}

	@Test
	public void testHasNoChildrenOverride() throws Exception {
		testHasNoChildrenOverride(false);
	}



}