/*******************************************************************************
 * Copyright (c) 2000, 2005 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.jdt.ui.tests.packageview;

import java.util.ArrayList;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.IWorkspaceDescription;
import org.eclipse.core.resources.ResourcesPlugin;

import org.eclipse.jface.viewers.ITreeContentProvider;

import org.eclipse.ui.IViewPart;
import org.eclipse.ui.IWorkbench;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;

import org.eclipse.jdt.core.ElementChangedEvent;
import org.eclipse.jdt.core.IClasspathEntry;
import org.eclipse.jdt.core.ICompilationUnit;
import org.eclipse.jdt.core.IElementChangedListener;
import org.eclipse.jdt.core.IJavaElement;
import org.eclipse.jdt.core.IJavaElementDelta;
import org.eclipse.jdt.core.IJavaProject;
import org.eclipse.jdt.core.IPackageFragment;
import org.eclipse.jdt.core.IPackageFragmentRoot;

import org.eclipse.jdt.internal.ui.packageview.PackageExplorerContentProvider;

import org.eclipse.jdt.testplugin.JavaProjectHelper;
import org.eclipse.jdt.testplugin.JavaTestPlugin;

/**
 * Tests for the PackageExplorerContentProvider.
 * 
 * @since 2.1
 */
public class ContentProviderTests1 extends TestCase {


	public static Test suite() {
		TestSuite suite= new TestSuite("org.eclipse.jdt.ui.ContentProviderTests1"); //$NON-NLS-1$
		//$JUnit-BEGIN$
	   suite.addTestSuite(ContentProviderTests1.class);
		//$JUnit-END$
		return suite;
	}

	private IJavaProject fJProject1;
	private IJavaProject fJProject2;
	
	private IPackageFragmentRoot fRoot1;
	private IPackageFragment fPack1;
	private IPackageFragment fPack2;
	private IPackageFragment fPack4;
	private IPackageFragment fPack3;
	private IWorkspace fWorkspace;
	private IWorkbench fWorkbench;
	private MockPluginView fMyPart;
	
	private ITreeContentProvider fProvider;
	private IPackageFragmentRoot fArchiveFragmentRoot;
	private IPackageFragment fPackJunit;
	private IPackageFragment fPackJunitSamples;
	private IPackageFragment fPackJunitSamplesMoney;

	private IPackageFragment fPack5;
	private IPackageFragment fPack6;
	private IFile fFile1;
	private IFile fFile2;
	private ICompilationUnit fCUIMoney;
	private ICompilationUnit fCUMoney;
	private ICompilationUnit fCUMoneyBag;
	private ICompilationUnit fCUMoneyTest;
	
	private ICompilationUnit fCU1;
	private ICompilationUnit fCU2;
	
	private IWorkbenchPage page;
	private ICompilationUnit fCUAllTests;
	private ICompilationUnit fCUVectorTest;
	private ICompilationUnit fCUSimpleTest;
	private boolean fEnableAutoBuildAfterTesting;
	private ICompilationUnit fCU3;
	
	public ContentProviderTests1(String name) {
		super(name);
	}
	
	//---------Test for getChildren-------------------

	public void testGetChildrenProjectWithSourceFolders() throws Exception{
		Object[] expectedChildren= new Object[]{fRoot1, fFile1, fFile2};
		Object[] children= fProvider.getChildren(fJProject2);
		assertTrue("Wrong children found for project", compareArrays(children, expectedChildren));//$NON-NLS-1$
	}
	
	
	public void testGetChildrentMidLevelFragment() throws Exception{
		Object[] expectedChildren= new Object[]{fPack4, fPack5};
		Object[] children= fProvider.getChildren(fPack3);
		assertTrue("Wrong children found for PackageFragment",compareArrays(children, expectedChildren));//$NON-NLS-1$
	}
	
	public void testGetChildrenBottomLevelFragment() throws Exception{
		Object[] expectedChildren= new Object[]{fCU1};
		Object[] children= fProvider.getChildren(fPack2);
		assertTrue("Wrong children found for PackageFragment",compareArrays(children, expectedChildren));//$NON-NLS-1$
	}

	public void testGetChildrenMidLevelFragmentInArchive() throws Exception{
		Object[] expectedChildren= new Object[]{fPackJunitSamplesMoney, fCUAllTests, fCUSimpleTest, fCUVectorTest };
		Object[] children= fProvider.getChildren(fPackJunitSamples);
		assertTrue("wrong chidren found for mid level PackageFragment in Archive", compareArrays(children, expectedChildren));//$NON-NLS-1$
	}

	public void testGetChildrenBottomLevelFragmentInArchive() throws Exception{
		Object[] expectedChildren= new Object[]{fCUIMoney, fCUMoney, fCUMoneyBag, fCUMoneyTest};
		Object[] children= fProvider.getChildren(fPackJunitSamplesMoney);
		assertTrue("wrong children found for a bottom PackageFragment in PackageFragmentRoot Archive", compareArrays(children, expectedChildren));	//$NON-NLS-1$
	}
	
	public void testGetChildrenSourceFolder() throws Exception {
		Object[] expectedChildren = new Object[] { fPack1, fPack2, fPack3, fRoot1.getPackageFragment("")};//$NON-NLS-1$
		Object[] children = fProvider.getChildren(fRoot1);
		assertTrue("Wrong children found for PackageFragmentRoot", compareArrays(children, expectedChildren));//$NON-NLS-1$
	}
	
	public void testGetChildrenArchive(){	Object[] expectedChildren= new Object[]{fPackJunit, fArchiveFragmentRoot.getPackageFragment("")};//$NON-NLS-1$
		Object[] children= fProvider.getChildren(fArchiveFragmentRoot);
		assertTrue("Wrong child found for PackageFragmentRoot Archive", compareArrays(children,expectedChildren));//$NON-NLS-1$
	}
	
	//---------------Get Parent Tests-----------------------------
	
	public void testGetParentArchive() throws Exception{
		Object parent= fProvider.getParent(fArchiveFragmentRoot);
		assertTrue("Wrong parent found for PackageFragmentRoot Archive", parent==fJProject1);//$NON-NLS-1$
	}

	public void testGetParentMidLevelFragmentInArchive() throws Exception{
		Object expectedParent= fPackJunitSamples;
		Object parent= fProvider.getParent(fPackJunitSamplesMoney);
		assertTrue("Wrong parent found for a NON top level PackageFragment in an Archive", expectedParent.equals(parent));//$NON-NLS-1$
	}	
	
	public void testGetParentTopLevelFragmentInArchive() throws Exception{
		Object expectedParent= fPackJunit;
		Object parent= fProvider.getParent(fPackJunitSamples);
		assertTrue("Wrong parent found for a top level PackageFragment in an Archive", expectedParent.equals(parent));	//$NON-NLS-1$
	}
	
	public void testGetParentTopLevelFragment() throws Exception{
		Object expectedParent= fRoot1;
		Object parent= fProvider.getParent(fPack3);
		assertTrue("Wrong parent found for a top level PackageFragment", expectedParent.equals(parent));//$NON-NLS-1$
	}
	
	public void testGetParentMidLevelFragment() throws Exception{
		Object expectedParent= fPack3;
		Object parent= fProvider.getParent(fPack4);
		assertTrue("Wrong parent found for a NON top level PackageFragment", expectedParent.equals(parent));//$NON-NLS-1$
	}
	
	
	public void testDeleteBottomLevelFragment() throws Exception{
		
		//send a delta indicating fragment deleted
		IElementChangedListener listener= (IElementChangedListener)fProvider;
		IJavaElementDelta delta= TestDelta.createDelta(fPack4, IJavaElementDelta.REMOVED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));
		
		//force events from dispaly
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}
		
		assertTrue("Remove happened", fMyPart.hasRemoveHappened());//$NON-NLS-1$
		assertTrue("Correct Remove", fMyPart.getRemovedObject().contains(fPack4));//$NON-NLS-1$
		assertEquals("No refreshes", 0, fMyPart.getRefreshedObject().size());//$NON-NLS-1$
	}
	
	public void testAddBottomLevelFragment() throws Exception {
		IPackageFragment test= fRoot1.createPackageFragment("test", true, null);//$NON-NLS-1$

		//send a delta indicating fragment deleted
		IElementChangedListener listener= (IElementChangedListener) fProvider;
		IJavaElementDelta delta= TestDelta.createDelta(test, IJavaElementDelta.ADDED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));

		//force events from dispaly
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}

		assertTrue("Add happened", fMyPart.hasAddHappened()); //$NON-NLS-1$
		assertTrue("Correct Add", test.equals(fMyPart.getAddedObject())); //$NON-NLS-1$
		assertEquals("No refreshes", 0, fMyPart.getRefreshedObject().size()); //$NON-NLS-1$
	}

	public void testChangedTopLevelPackageFragment() throws Exception {
		//send a delta indicating fragment deleted
		IElementChangedListener listener= (IElementChangedListener) fProvider;
		IJavaElementDelta delta= TestDelta.createDelta(fPack3, IJavaElementDelta.CHANGED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));

		//force events from display
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}

		assertEquals("No refresh happened", 0, fMyPart.getRefreshedObject().size()); //$NON-NLS-1$
	}
	
	public void testChangeBottomLevelPackageFragment() throws Exception{
		//send a delta indicating fragment deleted
		fMyPart.fRefreshedObjects= new ArrayList();
		IElementChangedListener listener= (IElementChangedListener) fProvider;
		IJavaElementDelta delta= TestDelta.createDelta(fPack6, IJavaElementDelta.CHANGED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));
		
		//force events from display
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}

		assertEquals("No refresh happened", 0, fMyPart.getRefreshedObject().size());//$NON-NLS-1$
	}
		
	public void testRemoveCUsFromPackageFragment() throws Exception{
		
		//send a delta indicating fragment deleted
		IElementChangedListener listener= (IElementChangedListener) fProvider;
		IJavaElementDelta delta= TestDelta.createCUDelta(new ICompilationUnit[] { fCU2, fCU3 }, fPack6, IJavaElementDelta.REMOVED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));
		
		//force events from display
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}

		// removing more than one CU now results in a refresh.
		assertEquals("One refresh", 1, fMyPart.getRefreshedObject().size()); //$NON-NLS-1$
	}
	
	public void testRemoveCUFromPackageFragment() throws Exception {
		
		//send a delta indicating fragment deleted
		IElementChangedListener listener= (IElementChangedListener) fProvider;
		IJavaElementDelta delta= TestDelta.createCUDelta(new ICompilationUnit[]{fCU2}, fPack6, IJavaElementDelta.REMOVED);
		listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));

		//force events from display			
		while(fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {}

		assertTrue("Remove happened", fMyPart.hasRemoveHappened()); //$NON-NLS-1$
		assertTrue("Correct refresh", fMyPart.getRemovedObject().contains(fCU2)); //$NON-NLS-1$
		assertEquals("No refreshes", 0, fMyPart.getRefreshedObject().size()); //$NON-NLS-1$
	}
	
	public void testAddWorkingCopyCU() throws Exception {
		//test for bug 106452: Paste of source into container doesn't refresh package explorer
		ICompilationUnit cu= fPack6.createCompilationUnit("New.java","class New {}", true, null);//$NON-NLS-1$//$NON-NLS-2$
		cu.becomeWorkingCopy(null, null);
		
		try {
			fMyPart.getTreeViewer().setInput(fJProject1.getJavaModel());
			fMyPart.getTreeViewer().reveal(fCU2);
			((PackageExplorerContentProvider) fMyPart.getTreeViewer().getContentProvider()).setProvideMembers(false);
			
			//force events from display			
			while (fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {
			}
			
			IElementChangedListener listener= (IElementChangedListener) fProvider;
			IJavaElementDelta delta= TestDelta.createCUDelta(new ICompilationUnit[] { cu }, fPack6, IJavaElementDelta.ADDED);
			listener.elementChanged(new ElementChangedEvent(delta, ElementChangedEvent.POST_CHANGE));
			
			//force events from display			
			while (fMyPart.getTreeViewer().getControl().getDisplay().readAndDispatch()) {
			}

			assertTrue("No add happened", ! fMyPart.hasAddHappened()); //$NON-NLS-1$
			assertTrue("Refresh happened", fMyPart.hasRefreshHappened()); //$NON-NLS-1$
			assertEquals("One refresh", 1, fMyPart.getRefreshedObject().size()); //$NON-NLS-1$
			assertEquals("Correct refresh", fMyPart.getRefreshedObject().get(0), fPack6); //$NON-NLS-1$
			
		} finally {
			cu.discardWorkingCopy();
		}
	}
	

	/**
	 * @see TestCase#setUp()
	 */
	protected void setUp() throws Exception {
		super.setUp();
		
		fWorkspace= ResourcesPlugin.getWorkspace();
		assertNotNull(fWorkspace);
		IWorkspaceDescription workspaceDesc= fWorkspace.getDescription();
		fEnableAutoBuildAfterTesting= workspaceDesc.isAutoBuilding();
		if (fEnableAutoBuildAfterTesting)
			JavaProjectHelper.setAutoBuilding(false);
		
		assertNotNull(fWorkspace);	
		
		fJProject1= JavaProjectHelper.createJavaProject("TestProject1", "bin");//$NON-NLS-1$//$NON-NLS-2$
		fJProject2= JavaProjectHelper.createJavaProject("TestProject2", "bin");//$NON-NLS-1$//$NON-NLS-2$
		
		assertNotNull("project1 null", fJProject1);//$NON-NLS-1$
		assertNotNull("project2 null", fJProject2);//$NON-NLS-1$
		
		fJProject1.setRawClasspath(new IClasspathEntry[0], null);

		Object[] resource= fJProject2.getNonJavaResources();
		for (int i = 0; i < resource.length; i++) {
			Object object = resource[i];
			if(object instanceof IFile){
				IFile file = (IFile) object;
				if(".classpath".equals(file.getName()))//$NON-NLS-1$
					fFile1= file;
				else if (".project".equals(file.getName()))//$NON-NLS-1$
					fFile2= file;
			}
		}
		assertNotNull(fFile1);
		assertNotNull(fFile2);
		
		//set up project #1 : External Jar and zip file
		IPackageFragmentRoot jdk= JavaProjectHelper.addVariableRTJar(fJProject1, "JRE_LIB_TEST", null, null);//$NON-NLS-1$
		assertTrue("jdk not found", jdk != null);//$NON-NLS-1$

		java.io.File junitSrcArchive= JavaTestPlugin.getDefault().getFileInPlugin(JavaProjectHelper.JUNIT_SRC_381);
		assertTrue("junit src not found", junitSrcArchive != null && junitSrcArchive.exists());//$NON-NLS-1$

		fArchiveFragmentRoot= JavaProjectHelper.addSourceContainerWithImport(fJProject1, "src", junitSrcArchive, JavaProjectHelper.JUNIT_SRC_ENCODING);//$NON-NLS-1$
		assertTrue("Unable to create zipfile archive",fArchiveFragmentRoot.exists());//$NON-NLS-1$
		
		fPackJunit= fArchiveFragmentRoot.getPackageFragment("junit");//$NON-NLS-1$
		fPackJunitSamples= fArchiveFragmentRoot.getPackageFragment("junit.samples");//$NON-NLS-1$
		fPackJunitSamplesMoney= fArchiveFragmentRoot.getPackageFragment("junit.samples.money");//$NON-NLS-1$
		
		assertNotNull("creating fPackJunit", fPackJunit);//$NON-NLS-1$
		assertNotNull("creating fPackJunitSamples", fPackJunitSamples);//$NON-NLS-1$
		assertNotNull("creating fPackJunitSamplesMoney",fPackJunitSamplesMoney);//$NON-NLS-1$
		
		fCUIMoney= fPackJunitSamplesMoney.getCompilationUnit("IMoney.java");//$NON-NLS-1$
		fCUMoney= fPackJunitSamplesMoney.getCompilationUnit("Money.java");//$NON-NLS-1$
		fCUMoneyBag= fPackJunitSamplesMoney.getCompilationUnit("MoneyBag.java");//$NON-NLS-1$
		fCUMoneyTest= fPackJunitSamplesMoney.getCompilationUnit("MoneyTest.java");//$NON-NLS-1$
		
		fCUAllTests= fPackJunitSamples.getCompilationUnit("AllTests.java");//$NON-NLS-1$
		fCUVectorTest= fPackJunitSamples.getCompilationUnit("VectorTest.java");//$NON-NLS-1$
		fCUSimpleTest= fPackJunitSamples.getCompilationUnit("SimpleTest.java");//$NON-NLS-1$
		//set up project #2: file system structure with in a source folder

	//	JavaProjectHelper.addVariableEntry(fJProject2, new Path("JRE_LIB_TEST"), null, null);

		fRoot1= JavaProjectHelper.addSourceContainer(fJProject2, "src1");//$NON-NLS-1$
		fPack1= fRoot1.createPackageFragment("pack1", true, null);//$NON-NLS-1$
		fPack2= fRoot1.createPackageFragment("pack2", true, null);//$NON-NLS-1$
		fPack3= fRoot1.createPackageFragment("pack3",true,null);//$NON-NLS-1$
		fPack4= fRoot1.createPackageFragment("pack3.pack4", true,null);//$NON-NLS-1$
		fPack5= fRoot1.createPackageFragment("pack3.pack5",true,null);//$NON-NLS-1$
		fPack6= fRoot1.createPackageFragment("pack3.pack5.pack6", true, null);//$NON-NLS-1$
		
		fCU1= fPack2.createCompilationUnit("Object.java", "", true, null);//$NON-NLS-1$//$NON-NLS-2$
		fCU2= fPack6.createCompilationUnit("Object.java","", true, null);//$NON-NLS-1$//$NON-NLS-2$
		fCU3= fPack6.createCompilationUnit("Jen.java","", true,null);//$NON-NLS-1$//$NON-NLS-2$
		
		//set up the mock view
		setUpMockView();
	}
	
	public void setUpMockView() throws Exception{
		
		fWorkbench= PlatformUI.getWorkbench();
		assertNotNull(fWorkbench);
		
		page= fWorkbench.getActiveWorkbenchWindow().getActivePage();
		assertNotNull(page);
		
		//just testing to make sure my part can be created
		IViewPart myPart= new MockPluginView();
		assertNotNull(myPart);
		
		myPart= page.showView("org.eclipse.jdt.ui.tests.packageview.MockPluginView");//$NON-NLS-1$
		if (myPart instanceof MockPluginView) {
			fMyPart= (MockPluginView) myPart;
			fMyPart.setFolding(false);
			// above call might cause a property change event being sent
			fMyPart.fRefreshedObjects.clear();
			fProvider= (ITreeContentProvider)fMyPart.getTreeViewer().getContentProvider();
		}else assertTrue("Unable to get view",false);//$NON-NLS-1$
	
		assertNotNull(fProvider);		
	}

	/**
	 * @see TestCase#tearDown()
	 */
	protected void tearDown() throws Exception {
		fArchiveFragmentRoot.close();
			
		JavaProjectHelper.delete(fJProject1);
		JavaProjectHelper.delete(fJProject2);
		page.hideView(fMyPart);
		
		if (fEnableAutoBuildAfterTesting)
			JavaProjectHelper.setAutoBuilding(true);
		
		super.tearDown();
	}
	
	/**
	 * Method compareArrays. Both arrays must be of IPackageFragments or compare will fail.
	 * @param children
	 * @param expectedChildren
	 * @return boolean
	 */
	private boolean compareArrays(Object[] children, Object[] expectedChildren) {
		if(children.length!=expectedChildren.length)
			return false;
		for (int i= 0; i < children.length; i++) {
			Object child= children[i];
			if (child instanceof IJavaElement) {
				IJavaElement el= (IJavaElement) child;
				if(!contains(el, expectedChildren))
					return false;
			} else if(child instanceof IResource){
				IResource res = (IResource) child;	
				if(!contains(res, expectedChildren)){
					return false;	
				}
			}
		}
		return true;
	}
	/**
	 * Method contains.
	 * @param res
	 * @param expectedChildren
	 * @return boolean
	 */
	private boolean contains(IResource res, Object[] expectedChildren) {
		for (int i= 0; i < expectedChildren.length; i++) {
			Object object= expectedChildren[i];
			if (object instanceof IResource) {
				IResource expres= (IResource) object;
				if(expres.equals(res))
					return true;
			}
		}
		return false;
	}
	
	/**
	 * Method contains.
	 * @param fragment
	 * @param expectedChildren
	 * @return boolean
	 */
	private boolean contains(IJavaElement fragment, Object[] expectedChildren) {
		for (int i= 0; i < expectedChildren.length; i++) {
			Object object= expectedChildren[i];
			if (object instanceof IJavaElement) {
				IJavaElement expfrag= (IJavaElement) object;
				if(expfrag.equals(fragment))
					return true;
			}
		}
		return false;
	}

}