ui/org.eclipse.pde.ui/src/org/eclipse/pde/internal/ui/editor/build/BuildContentsSection.java - pde/eclipse.pde.ui - Git at Google

 /*******************************************************************************
  *  Copyright (c) 2000, 2016 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
  *     Lars Vogel <Lars.Vogel@vogella.com> - Bug 487943
  *******************************************************************************/

 package org.eclipse.pde.internal.ui.editor.build;

 import java.util.*;
 import org.eclipse.core.resources.*;
 import org.eclipse.core.runtime.*;
 import org.eclipse.jface.action.*;
 import org.eclipse.jface.viewers.*;
 import org.eclipse.pde.core.IModelChangedEvent;
 import org.eclipse.pde.core.build.*;
 import org.eclipse.pde.internal.build.IBuildPropertiesConstants;
 import org.eclipse.pde.internal.core.project.PDEProject;
 import org.eclipse.pde.internal.ui.PDEPlugin;
 import org.eclipse.pde.internal.ui.editor.*;
 import org.eclipse.pde.internal.ui.editor.context.InputContext;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.custom.BusyIndicator;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.widgets.*;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.forms.widgets.Section;
 import org.eclipse.ui.model.WorkbenchLabelProvider;

 public abstract class BuildContentsSection extends TableSection implements IResourceChangeListener, IResourceDeltaVisitor {

 	protected CheckboxTreeViewer fTreeViewer;
 	private boolean fDoRefresh = false;
 	protected IContainer fBundleRoot;
 	protected IBuildModel fBuildModel;
 	protected IResource fOriginalResource, fParentResource;
 	protected boolean isChecked;

 	public class TreeContentProvider implements ITreeContentProvider {

 		@Override
 		public Object[] getElements(Object parent) {
 			if (parent instanceof IContainer) {
 				try {
 					return ((IContainer) parent).members();
 				} catch (CoreException e) {
 					PDEPlugin.logException(e);
 				}
 			}
 			return new Object[0];
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
 		 */
 		@Override
 		public Object[] getChildren(Object parent) {
 			try {
 				if (parent instanceof IFolder)
 					return ((IFolder) parent).members();
 			} catch (CoreException e) {
 				PDEPlugin.logException(e);
 			}
 			return new Object[0];
 		}

 		public Object[] getFolderChildren(Object parent) {
 			IResource[] members = null;
 			try {
 				if (!(parent instanceof IFolder))
 					return new Object[0];
 				members = ((IFolder) parent).members();
 				ArrayList<IResource> results = new ArrayList<>();
 				for (IResource member : members) {
 					if ((member.getType() == IResource.FOLDER)) {
 						results.add(member);
 					}
 				}
 				return results.toArray();
 			} catch (CoreException e) {
 				PDEPlugin.logException(e);
 			}
 			return new Object[0];
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
 		 */
 		@Override
 		public Object getParent(Object element) {
 			if (element != null && element instanceof IResource) {
 				return ((IResource) element).getParent();
 			}
 			return null;
 		}

 		/**
 		 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
 		 */
 		@Override
 		public boolean hasChildren(Object element) {
 			if (element instanceof IFolder)
 				return getChildren(element).length > 0;
 			return false;
 		}
 	}

 	@Override
 	protected void createViewerPartControl(Composite parent, int style, int span, FormToolkit toolkit) {
 		MenuManager popupMenuManager = new MenuManager();
 		IMenuListener listener = mng -> fillContextMenu(mng);
 		popupMenuManager.addMenuListener(listener);
 		popupMenuManager.setRemoveAllWhenShown(true);
 		Control control = fTreeViewer.getControl();
 		Menu menu = popupMenuManager.createContextMenu(control);
 		control.setMenu(menu);
 	}

 	@Override
 	protected void fillContextMenu(IMenuManager manager) {
 		manager.add(getPage().getPDEEditor().getContributor().getRevertAction());
 		getPage().getPDEEditor().getContributor().contextMenuAboutToShow(manager, false);
 	}

 	private IBuildModel getBuildModel() {
 		InputContext context = getPage().getPDEEditor().getContextManager().findContext(BuildInputContext.CONTEXT_ID);
 		return (IBuildModel) context.getModel();
 	}

 	public BuildContentsSection(PDEFormPage page, Composite parent) {
 		super(page, parent, Section.DESCRIPTION, new String[0]);
 		PDEPlugin.getWorkspace().addResourceChangeListener(this);
 	}

 	@Override
 	public void createClient(final Section section, FormToolkit toolkit) {
 		Composite container = createClientContainer(section, 2, toolkit);
 		fBuildModel = getBuildModel();
 		if (fBuildModel.getUnderlyingResource() != null)
 			fBundleRoot = PDEProject.getBundleRoot(fBuildModel.getUnderlyingResource().getProject());

 		fTreeViewer = new CheckboxTreeViewer(toolkit.createTree(container, SWT.CHECK));
 		fTreeViewer.setContentProvider(new TreeContentProvider());
 		fTreeViewer.setLabelProvider(new WorkbenchLabelProvider());
 		fTreeViewer.setAutoExpandLevel(0);
 		fTreeViewer.addCheckStateListener(event -> {
 			final Object element = event.getElement();
 			BusyIndicator.showWhile(section.getDisplay(), () -> {
 				if (element instanceof IFile) {
 					IFile file = (IFile) event.getElement();
 					handleCheckStateChanged(file, event.getChecked());
 				} else if (element instanceof IFolder) {
 					IFolder folder = (IFolder) event.getElement();
 					handleCheckStateChanged(folder, event.getChecked());
 				}
 			});
 		});
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		gd.heightHint = 100;
 		gd.widthHint = 100;
 		fTreeViewer.getTree().setLayoutData(gd);
 		initialize();
 		toolkit.paintBordersFor(container);
 		createViewerPartControl(container, SWT.FULL_SELECTION, 2, toolkit);
 		section.setLayout(FormLayoutFactory.createClearGridLayout(false, 1));
 		section.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		section.setClient(container);
 	}

 	public void enableSection(boolean enable) {
 		fTreeViewer.getTree().setEnabled(enable);
 	}

 	protected void handleCheckStateChanged(IResource resource, boolean checked) {
 		fOriginalResource = resource;
 		isChecked = checked;
 		boolean wasTopParentChecked = fTreeViewer.getChecked(fOriginalResource.getParent());
 		if (!isChecked) {
 			resource = handleAllUnselected(resource, resource.getName());
 		}
 		fParentResource = resource;
 		handleBuildCheckStateChange(wasTopParentChecked);
 	}

 	protected IResource handleAllUnselected(IResource resource, String name) {
 		IResource parent = resource.getParent();
 		if (parent.equals(fBundleRoot)) {
 			return resource;
 		}
 		try {
 			boolean uncheck = true;
 			IResource[] members = ((IFolder) parent).members();
 			for (int i = 0; i < members.length; i++) {
 				if (fTreeViewer.getChecked(members[i]) && !members[i].getName().equals(name))
 					uncheck = false;
 			}
 			if (uncheck) {
 				return handleAllUnselected(parent, parent.getName());
 			}
 			return resource;
 		} catch (CoreException e) {
 			PDEPlugin.logException(e);
 			return null;
 		}
 	}

 	protected void setChildrenGrayed(IResource folder, boolean isGray) {
 		fTreeViewer.setGrayed(folder, isGray);
 		if (((TreeContentProvider) fTreeViewer.getContentProvider()).hasChildren(folder)) {
 			Object[] members = ((TreeContentProvider) fTreeViewer.getContentProvider()).getFolderChildren(folder);
 			for (Object member : members) {
 				setChildrenGrayed((IFolder) member, isGray);
 			}
 		}
 	}

 	protected void setParentsChecked(IResource resource) {
 		if (resource.getParent() != resource.getProject()) {
 			fTreeViewer.setChecked(resource.getParent(), true);
 			setParentsChecked(resource.getParent());
 		}
 	}

 	/**
 	 * removes all child resources of the specified folder from build entries
 	 *
 	 * @param folder -
 	 *            current folder being modified in tree
 	 *
 	 * note: does not remove folder itself
 	 */
 	protected abstract void deleteFolderChildrenFromEntries(IFolder folder);

 	protected void initializeCheckState() {
 		uncheckAll();
 	}

 	protected void initializeCheckState(final IBuildEntry includes, final IBuildEntry excludes) {
 		fTreeViewer.getTree().getDisplay().asyncExec(() -> BusyIndicator.showWhile(Display.getCurrent(), () -> {
 			if (fTreeViewer.getTree().isDisposed())
 				return;
 			Vector<String> fileExt = new Vector<>();
 			String[] inclTokens, exclTokens = new String[0];
 			if (fBundleRoot == null || includes == null)
 				return;
 			inclTokens = includes.getTokens();
 			if (excludes != null)
 				exclTokens = excludes.getTokens();
 			Set<String> temp = new TreeSet<>();
 			for (String inclToken : inclTokens)
 				temp.add(inclToken);
 			for (String exclToken : exclTokens)
 				temp.add(exclToken);
 			Iterator<String> iter = temp.iterator();
 			while (iter.hasNext()) {
 				String resource = iter.next().toString();
 				boolean isIncluded = includes.contains(resource);
 				if (resource.isEmpty()) {
 					// ignore - empty line
 				} else if (resource.equals(".") || resource.equals("./") || resource.equals(".\\")) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
 					// ignore - should be root directory
 				} else if (resource.lastIndexOf(IPath.SEPARATOR) == resource.length() - 1) {
 					IFolder folder = fBundleRoot.getFolder(new Path(resource));
 					if (!folder.exists())
 						continue;
 					fTreeViewer.setSubtreeChecked(folder, isIncluded);
 					fTreeViewer.setParentsGrayed(folder, true);
 					if (isIncluded) {
 						setParentsChecked(folder);
 						fTreeViewer.setGrayed(folder, false);
 					}
 				} else if (resource.startsWith("*.")) { //$NON-NLS-1$
 					if (isIncluded)
 						fileExt.add(resource.substring(2));
 				} else {
 					IFile file = fBundleRoot.getFile(new Path(resource));
 					if (!file.exists())
 						continue;
 					fTreeViewer.setChecked(file, isIncluded);
 					fTreeViewer.setParentsGrayed(file, true);
 					if (isIncluded) {
 						fTreeViewer.setGrayed(file, false);
 						setParentsChecked(file);
 					}
 				}
 			}
 			if (fileExt.size() == 0)
 				return;
 			try {
 				IResource[] members = fBundleRoot.members();
 				for (int i = 0; i < members.length; i++) {
 					if (!(members[i] instanceof IFolder) && (fileExt.contains(members[i].getFileExtension()))) {
 						fTreeViewer.setChecked(members[i], includes.contains("*." //$NON-NLS-1$
 								+ members[i].getFileExtension()));
 					}
 				}
 			} catch (CoreException e) {
 				PDEPlugin.logException(e);
 			}
 		}));
 	}

 	protected abstract void handleBuildCheckStateChange(boolean wasTopParentChecked);

 	protected void handleCheck(IBuildEntry includes, IBuildEntry excludes, String resourceName, IResource resource, boolean wasTopParentChecked, String PROPERTY_INCLUDES) {

 		try {
 			if (includes == null) {
 				includes = fBuildModel.getFactory().createEntry(PROPERTY_INCLUDES);
 				IBuild build = fBuildModel.getBuild();
 				build.add(includes);
 			}
 			if ((!wasTopParentChecked && !includes.contains(resourceName)) || isValidIncludeEntry(includes, excludes, resource, resourceName)) {
 				includes.addToken(resourceName);
 			}
 			if (excludes != null && excludes.contains(resourceName))
 				excludes.removeToken(resourceName);
 		} catch (CoreException e) {
 			PDEPlugin.logException(e);
 		}
 	}

 	protected boolean isValidIncludeEntry(IBuildEntry includes, IBuildEntry excludes, IResource resource, String resourceName) {
 		if (excludes == null)
 			return true;
 		IPath resPath = resource.getProjectRelativePath();
 		while (resPath.segmentCount() > 1) {
 			resPath = resPath.removeLastSegments(1);
 			if (includes.contains(resPath.toString() + IPath.SEPARATOR))
 				return false;
 			else if (excludes.contains(resPath.toString() + IPath.SEPARATOR))
 				return true;
 		}
 		return !excludes.contains(resourceName);
 	}

 	protected void handleUncheck(IBuildEntry includes, IBuildEntry excludes, String resourceName, IResource resource, String PROPERTY_EXCLUDES) {

 		try {
 			if (fTreeViewer.getChecked(resource.getParent())) {
 				if (excludes == null) {
 					excludes = fBuildModel.getFactory().createEntry(PROPERTY_EXCLUDES);
 					IBuild build = fBuildModel.getBuild();
 					build.add(excludes);
 				}
 				if (!excludes.contains(resourceName) && (includes != null ? !includes.contains(resourceName) : true))
 					excludes.addToken(resourceName);
 			}
 			if (includes != null) {
 				if (includes.contains(resourceName))
 					includes.removeToken(resourceName);
 				if (includes.contains("*." + resource.getFileExtension())) { //$NON-NLS-1$
 					IResource[] members = fBundleRoot.members();
 					for (int i = 0; i < members.length; i++) {
 						if (!(members[i] instanceof IFolder) && !members[i].getName().equals(resource.getName()) && (resource.getFileExtension().equals(members[i].getFileExtension()))) {
 							includes.addToken(members[i].getName());
 						}
 						IBuildEntry[] libraries = BuildUtil.getBuildLibraries(fBuildModel.getBuild().getBuildEntries());
 						if (resource.getFileExtension().equals("jar") //$NON-NLS-1$
 								&& libraries.length != 0) {
 							for (IBuildEntry library : libraries) {
 								String libName = library.getName().substring(7);
 								IPath path = fBundleRoot.getFile(new Path(libName)).getProjectRelativePath().makeRelativeTo(fBundleRoot.getProjectRelativePath());
 								if (path.segmentCount() == 1 && !includes.contains(libName) && !libName.equals(resource.getName()))
 									includes.addToken(libName);
 							}
 						}
 					}
 					includes.removeToken("*." + resource.getFileExtension()); //$NON-NLS-1$
 				}
 			}
 		} catch (CoreException e) {
 			PDEPlugin.logException(e);
 		}
 	}

 	protected String getResourceFolderName(String resourceName) {
 		return resourceName + IPath.SEPARATOR;
 	}

 	/**
 	 * @param resource -
 	 *            file/folder being modified in tree
 	 * @param resourceName -
 	 *            name file/folder
 	 * @return relative path of folder if resource is folder, otherwise, return
 	 *         resourceName
 	 */
 	protected String handleResourceFolder(IResource resource, String resourceName) {
 		if (resource instanceof IFolder) {
 			deleteFolderChildrenFromEntries((IFolder) resource);
 			return getResourceFolderName(resourceName);
 		}
 		return resourceName;
 	}

 	public void initialize() {
 		if (fTreeViewer.getInput() == null) {
 			fTreeViewer.setUseHashlookup(true);
 			fTreeViewer.setInput(fBundleRoot);
 		}
 		fBuildModel.addModelChangedListener(this);
 	}

 	@Override
 	public void dispose() {
 		fBuildModel.removeModelChangedListener(this);
 		PDEPlugin.getWorkspace().removeResourceChangeListener(this);
 		super.dispose();
 	}

 	protected void deleteEmptyEntries() {
 		IBuild build = fBuildModel.getBuild();
 		IBuildEntry[] entries = {build.getEntry(IBuildPropertiesConstants.PROPERTY_BIN_EXCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_SRC_EXCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_SRC_INCLUDES)};
 		try {
 			for (IBuildEntry entry : entries) {
 				if (entry != null && entry.getTokens().length == 0)
 					build.remove(entry);
 			}
 		} catch (CoreException e) {
 			PDEPlugin.logException(e);
 		}
 	}

 	public CheckboxTreeViewer getTreeViewer() {
 		return fTreeViewer;
 	}

 	@Override
 	protected IStructuredSelection getViewerSelection() {
 		return getTreeViewer().getStructuredSelection();
 	}

 	@Override
 	public void refresh() {
 		initializeCheckState();
 		super.refresh();
 	}

 	public void uncheckAll() {
 		fTreeViewer.setCheckedElements(new Object[0]);
 	}

 	protected void removeChildren(IBuildEntry entry, String parentFolder) {
 		try {
 			if (entry != null) {
 				String[] tokens = entry.getTokens();
 				for (int i = 0; i < tokens.length; i++) {
 					if (tokens[i].indexOf(IPath.SEPARATOR) != -1 && tokens[i].startsWith(parentFolder) && !tokens[i].equals(parentFolder)) {
 						entry.removeToken(tokens[i]);
 					}
 				}
 			}
 		} catch (CoreException e) {
 			PDEPlugin.logException(e);
 		}
 	}

 	@Override
 	public void resourceChanged(IResourceChangeEvent event) {
 		if (fTreeViewer.getControl().isDisposed())
 			return;
 		fDoRefresh = false;
 		IResourceDelta delta = event.getDelta();
 		try {
 			if (delta != null)
 				delta.accept(this);
 			if (fDoRefresh) {
 				asyncRefresh();
 				fDoRefresh = false;
 			}
 		} catch (CoreException e) {
 		}
 	}

 	@Override
 	public boolean visit(IResourceDelta delta) throws CoreException {
 		IResource resource = delta.getResource();
 		IProject project = fBuildModel.getUnderlyingResource().getProject();

 		if ((resource instanceof IFile || resource instanceof IFolder) && resource.getProject().equals(project)) {
 			if (delta.getKind() == IResourceDelta.ADDED || delta.getKind() == IResourceDelta.REMOVED) {
 				fDoRefresh = true;
 				return false;
 			}
 		} else if (resource instanceof IProject && ((IProject) resource).equals(project)) {
 			return delta.getKind() != IResourceDelta.REMOVED;
 		}
 		return true;
 	}

 	private void asyncRefresh() {
 		Control control = fTreeViewer.getControl();
 		if (!control.isDisposed()) {
 			control.getDisplay().asyncExec(() -> {
 				if (!fTreeViewer.getControl().isDisposed()) {
 					fTreeViewer.refresh(true);
 					initializeCheckState();
 				}
 			});
 		}
 	}

 	@Override
 	protected void selectionChanged(IStructuredSelection selection) {
 		getPage().getPDEEditor().setSelection(selection);

 	}

 	@Override
 	public void modelChanged(IModelChangedEvent event) {

 		if (event.getChangeType() == IModelChangedEvent.WORLD_CHANGED) {
 			markStale();
 		}
 		Object changeObject = event.getChangedObjects()[0];

 		if (!(changeObject instanceof IBuildEntry && (((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_BIN_EXCLUDES) || ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES) || ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_SRC_EXCLUDES) || ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_SRC_INCLUDES))))
 			return;

 		if ((fParentResource == null && fOriginalResource != null) || (fOriginalResource == null && fParentResource != null)) {
 			initializeCheckState();
 			return;
 		}
 		if ((fParentResource == null && fOriginalResource == null) || (event.getChangedProperty() != null && event.getChangedProperty().equals(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES))) {

 			return;
 		}

 		fTreeViewer.setChecked(fParentResource, isChecked);
 		fTreeViewer.setGrayed(fOriginalResource, false);
 		fTreeViewer.setParentsGrayed(fParentResource, true);
 		setParentsChecked(fParentResource);
 		fTreeViewer.setGrayed(fParentResource, false);
 		if (fParentResource instanceof IFolder) {
 			fTreeViewer.setSubtreeChecked(fParentResource, isChecked);
 			setChildrenGrayed(fParentResource, false);
 		}
 		while (!fOriginalResource.equals(fParentResource)) {
 			fTreeViewer.setChecked(fOriginalResource, isChecked);
 			fOriginalResource = fOriginalResource.getParent();
 		}
 		fParentResource = null;
 		fOriginalResource = null;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2016 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
	* Lars Vogel <Lars.Vogel@vogella.com> - Bug 487943
	*******************************************************************************/

	package org.eclipse.pde.internal.ui.editor.build;

	import java.util.*;
	import org.eclipse.core.resources.*;
	import org.eclipse.core.runtime.*;
	import org.eclipse.jface.action.*;
	import org.eclipse.jface.viewers.*;
	import org.eclipse.pde.core.IModelChangedEvent;
	import org.eclipse.pde.core.build.*;
	import org.eclipse.pde.internal.build.IBuildPropertiesConstants;
	import org.eclipse.pde.internal.core.project.PDEProject;
	import org.eclipse.pde.internal.ui.PDEPlugin;
	import org.eclipse.pde.internal.ui.editor.*;
	import org.eclipse.pde.internal.ui.editor.context.InputContext;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.custom.BusyIndicator;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.widgets.*;
	import org.eclipse.ui.forms.widgets.FormToolkit;
	import org.eclipse.ui.forms.widgets.Section;
	import org.eclipse.ui.model.WorkbenchLabelProvider;

	public abstract class BuildContentsSection extends TableSection implements IResourceChangeListener, IResourceDeltaVisitor {

	protected CheckboxTreeViewer fTreeViewer;
	private boolean fDoRefresh = false;
	protected IContainer fBundleRoot;
	protected IBuildModel fBuildModel;
	protected IResource fOriginalResource, fParentResource;
	protected boolean isChecked;

	public class TreeContentProvider implements ITreeContentProvider {

	@Override
	public Object[] getElements(Object parent) {
	if (parent instanceof IContainer) {
	try {
	return ((IContainer) parent).members();
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}
	return new Object[0];
	}

	/**
	* @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
	*/
	@Override
	public Object[] getChildren(Object parent) {
	try {
	if (parent instanceof IFolder)
	return ((IFolder) parent).members();
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	return new Object[0];
	}

	public Object[] getFolderChildren(Object parent) {
	IResource[] members = null;
	try {
	if (!(parent instanceof IFolder))
	return new Object[0];
	members = ((IFolder) parent).members();
	ArrayList<IResource> results = new ArrayList<>();
	for (IResource member : members) {
	if ((member.getType() == IResource.FOLDER)) {
	results.add(member);
	}
	}
	return results.toArray();
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	return new Object[0];
	}

	/**
	* @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
	*/
	@Override
	public Object getParent(Object element) {
	if (element != null && element instanceof IResource) {
	return ((IResource) element).getParent();
	}
	return null;
	}

	/**
	* @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
	*/
	@Override
	public boolean hasChildren(Object element) {
	if (element instanceof IFolder)
	return getChildren(element).length > 0;
	return false;
	}
	}

	@Override
	protected void createViewerPartControl(Composite parent, int style, int span, FormToolkit toolkit) {
	MenuManager popupMenuManager = new MenuManager();
	IMenuListener listener = mng -> fillContextMenu(mng);
	popupMenuManager.addMenuListener(listener);
	popupMenuManager.setRemoveAllWhenShown(true);
	Control control = fTreeViewer.getControl();
	Menu menu = popupMenuManager.createContextMenu(control);
	control.setMenu(menu);
	}

	@Override
	protected void fillContextMenu(IMenuManager manager) {
	manager.add(getPage().getPDEEditor().getContributor().getRevertAction());
	getPage().getPDEEditor().getContributor().contextMenuAboutToShow(manager, false);
	}

	private IBuildModel getBuildModel() {
	InputContext context = getPage().getPDEEditor().getContextManager().findContext(BuildInputContext.CONTEXT_ID);
	return (IBuildModel) context.getModel();
	}

	public BuildContentsSection(PDEFormPage page, Composite parent) {
	super(page, parent, Section.DESCRIPTION, new String[0]);
	PDEPlugin.getWorkspace().addResourceChangeListener(this);
	}

	@Override
	public void createClient(final Section section, FormToolkit toolkit) {
	Composite container = createClientContainer(section, 2, toolkit);
	fBuildModel = getBuildModel();
	if (fBuildModel.getUnderlyingResource() != null)
	fBundleRoot = PDEProject.getBundleRoot(fBuildModel.getUnderlyingResource().getProject());

	fTreeViewer = new CheckboxTreeViewer(toolkit.createTree(container, SWT.CHECK));
	fTreeViewer.setContentProvider(new TreeContentProvider());
	fTreeViewer.setLabelProvider(new WorkbenchLabelProvider());
	fTreeViewer.setAutoExpandLevel(0);
	fTreeViewer.addCheckStateListener(event -> {
	final Object element = event.getElement();
	BusyIndicator.showWhile(section.getDisplay(), () -> {
	if (element instanceof IFile) {
	IFile file = (IFile) event.getElement();
	handleCheckStateChanged(file, event.getChecked());
	} else if (element instanceof IFolder) {
	IFolder folder = (IFolder) event.getElement();
	handleCheckStateChanged(folder, event.getChecked());
	}
	});
	});
	GridData gd = new GridData(GridData.FILL_BOTH);
	gd.heightHint = 100;
	gd.widthHint = 100;
	fTreeViewer.getTree().setLayoutData(gd);
	initialize();
	toolkit.paintBordersFor(container);
	createViewerPartControl(container, SWT.FULL_SELECTION, 2, toolkit);
	section.setLayout(FormLayoutFactory.createClearGridLayout(false, 1));
	section.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	section.setClient(container);
	}

	public void enableSection(boolean enable) {
	fTreeViewer.getTree().setEnabled(enable);
	}

	protected void handleCheckStateChanged(IResource resource, boolean checked) {
	fOriginalResource = resource;
	isChecked = checked;
	boolean wasTopParentChecked = fTreeViewer.getChecked(fOriginalResource.getParent());
	if (!isChecked) {
	resource = handleAllUnselected(resource, resource.getName());
	}
	fParentResource = resource;
	handleBuildCheckStateChange(wasTopParentChecked);
	}

	protected IResource handleAllUnselected(IResource resource, String name) {
	IResource parent = resource.getParent();
	if (parent.equals(fBundleRoot)) {
	return resource;
	}
	try {
	boolean uncheck = true;
	IResource[] members = ((IFolder) parent).members();
	for (int i = 0; i < members.length; i++) {
	if (fTreeViewer.getChecked(members[i]) && !members[i].getName().equals(name))
	uncheck = false;
	}
	if (uncheck) {
	return handleAllUnselected(parent, parent.getName());
	}
	return resource;
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	return null;
	}
	}

	protected void setChildrenGrayed(IResource folder, boolean isGray) {
	fTreeViewer.setGrayed(folder, isGray);
	if (((TreeContentProvider) fTreeViewer.getContentProvider()).hasChildren(folder)) {
	Object[] members = ((TreeContentProvider) fTreeViewer.getContentProvider()).getFolderChildren(folder);
	for (Object member : members) {
	setChildrenGrayed((IFolder) member, isGray);
	}
	}
	}

	protected void setParentsChecked(IResource resource) {
	if (resource.getParent() != resource.getProject()) {
	fTreeViewer.setChecked(resource.getParent(), true);
	setParentsChecked(resource.getParent());
	}
	}

	/**
	* removes all child resources of the specified folder from build entries
	*
	* @param folder -
	* current folder being modified in tree
	*
	* note: does not remove folder itself
	*/
	protected abstract void deleteFolderChildrenFromEntries(IFolder folder);

	protected void initializeCheckState() {
	uncheckAll();
	}

	protected void initializeCheckState(final IBuildEntry includes, final IBuildEntry excludes) {
	fTreeViewer.getTree().getDisplay().asyncExec(() -> BusyIndicator.showWhile(Display.getCurrent(), () -> {
	if (fTreeViewer.getTree().isDisposed())
	return;
	Vector<String> fileExt = new Vector<>();
	String[] inclTokens, exclTokens = new String[0];
	if (fBundleRoot == null \|\| includes == null)
	return;
	inclTokens = includes.getTokens();
	if (excludes != null)
	exclTokens = excludes.getTokens();
	Set<String> temp = new TreeSet<>();
	for (String inclToken : inclTokens)
	temp.add(inclToken);
	for (String exclToken : exclTokens)
	temp.add(exclToken);
	Iterator<String> iter = temp.iterator();
	while (iter.hasNext()) {
	String resource = iter.next().toString();
	boolean isIncluded = includes.contains(resource);
	if (resource.isEmpty()) {
	// ignore - empty line
	} else if (resource.equals(".") \|\| resource.equals("./") \|\| resource.equals(".\\")) { //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
	// ignore - should be root directory
	} else if (resource.lastIndexOf(IPath.SEPARATOR) == resource.length() - 1) {
	IFolder folder = fBundleRoot.getFolder(new Path(resource));
	if (!folder.exists())
	continue;
	fTreeViewer.setSubtreeChecked(folder, isIncluded);
	fTreeViewer.setParentsGrayed(folder, true);
	if (isIncluded) {
	setParentsChecked(folder);
	fTreeViewer.setGrayed(folder, false);
	}
	} else if (resource.startsWith("*.")) { //$NON-NLS-1$
	if (isIncluded)
	fileExt.add(resource.substring(2));
	} else {
	IFile file = fBundleRoot.getFile(new Path(resource));
	if (!file.exists())
	continue;
	fTreeViewer.setChecked(file, isIncluded);
	fTreeViewer.setParentsGrayed(file, true);
	if (isIncluded) {
	fTreeViewer.setGrayed(file, false);
	setParentsChecked(file);
	}
	}
	}
	if (fileExt.size() == 0)
	return;
	try {
	IResource[] members = fBundleRoot.members();
	for (int i = 0; i < members.length; i++) {
	if (!(members[i] instanceof IFolder) && (fileExt.contains(members[i].getFileExtension()))) {
	fTreeViewer.setChecked(members[i], includes.contains("*." //$NON-NLS-1$
	+ members[i].getFileExtension()));
	}
	}
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}));
	}

	protected abstract void handleBuildCheckStateChange(boolean wasTopParentChecked);

	protected void handleCheck(IBuildEntry includes, IBuildEntry excludes, String resourceName, IResource resource, boolean wasTopParentChecked, String PROPERTY_INCLUDES) {

	try {
	if (includes == null) {
	includes = fBuildModel.getFactory().createEntry(PROPERTY_INCLUDES);
	IBuild build = fBuildModel.getBuild();
	build.add(includes);
	}
	if ((!wasTopParentChecked && !includes.contains(resourceName)) \|\| isValidIncludeEntry(includes, excludes, resource, resourceName)) {
	includes.addToken(resourceName);
	}
	if (excludes != null && excludes.contains(resourceName))
	excludes.removeToken(resourceName);
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}

	protected boolean isValidIncludeEntry(IBuildEntry includes, IBuildEntry excludes, IResource resource, String resourceName) {
	if (excludes == null)
	return true;
	IPath resPath = resource.getProjectRelativePath();
	while (resPath.segmentCount() > 1) {
	resPath = resPath.removeLastSegments(1);
	if (includes.contains(resPath.toString() + IPath.SEPARATOR))
	return false;
	else if (excludes.contains(resPath.toString() + IPath.SEPARATOR))
	return true;
	}
	return !excludes.contains(resourceName);
	}

	protected void handleUncheck(IBuildEntry includes, IBuildEntry excludes, String resourceName, IResource resource, String PROPERTY_EXCLUDES) {

	try {
	if (fTreeViewer.getChecked(resource.getParent())) {
	if (excludes == null) {
	excludes = fBuildModel.getFactory().createEntry(PROPERTY_EXCLUDES);
	IBuild build = fBuildModel.getBuild();
	build.add(excludes);
	}
	if (!excludes.contains(resourceName) && (includes != null ? !includes.contains(resourceName) : true))
	excludes.addToken(resourceName);
	}
	if (includes != null) {
	if (includes.contains(resourceName))
	includes.removeToken(resourceName);
	if (includes.contains("*." + resource.getFileExtension())) { //$NON-NLS-1$
	IResource[] members = fBundleRoot.members();
	for (int i = 0; i < members.length; i++) {
	if (!(members[i] instanceof IFolder) && !members[i].getName().equals(resource.getName()) && (resource.getFileExtension().equals(members[i].getFileExtension()))) {
	includes.addToken(members[i].getName());
	}
	IBuildEntry[] libraries = BuildUtil.getBuildLibraries(fBuildModel.getBuild().getBuildEntries());
	if (resource.getFileExtension().equals("jar") //$NON-NLS-1$
	&& libraries.length != 0) {
	for (IBuildEntry library : libraries) {
	String libName = library.getName().substring(7);
	IPath path = fBundleRoot.getFile(new Path(libName)).getProjectRelativePath().makeRelativeTo(fBundleRoot.getProjectRelativePath());
	if (path.segmentCount() == 1 && !includes.contains(libName) && !libName.equals(resource.getName()))
	includes.addToken(libName);
	}
	}
	}
	includes.removeToken("*." + resource.getFileExtension()); //$NON-NLS-1$
	}
	}
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}

	protected String getResourceFolderName(String resourceName) {
	return resourceName + IPath.SEPARATOR;
	}

	/**
	* @param resource -
	* file/folder being modified in tree
	* @param resourceName -
	* name file/folder
	* @return relative path of folder if resource is folder, otherwise, return
	* resourceName
	*/
	protected String handleResourceFolder(IResource resource, String resourceName) {
	if (resource instanceof IFolder) {
	deleteFolderChildrenFromEntries((IFolder) resource);
	return getResourceFolderName(resourceName);
	}
	return resourceName;
	}

	public void initialize() {
	if (fTreeViewer.getInput() == null) {
	fTreeViewer.setUseHashlookup(true);
	fTreeViewer.setInput(fBundleRoot);
	}
	fBuildModel.addModelChangedListener(this);
	}

	@Override
	public void dispose() {
	fBuildModel.removeModelChangedListener(this);
	PDEPlugin.getWorkspace().removeResourceChangeListener(this);
	super.dispose();
	}

	protected void deleteEmptyEntries() {
	IBuild build = fBuildModel.getBuild();
	IBuildEntry[] entries = {build.getEntry(IBuildPropertiesConstants.PROPERTY_BIN_EXCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_SRC_EXCLUDES), build.getEntry(IBuildPropertiesConstants.PROPERTY_SRC_INCLUDES)};
	try {
	for (IBuildEntry entry : entries) {
	if (entry != null && entry.getTokens().length == 0)
	build.remove(entry);
	}
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}

	public CheckboxTreeViewer getTreeViewer() {
	return fTreeViewer;
	}

	@Override
	protected IStructuredSelection getViewerSelection() {
	return getTreeViewer().getStructuredSelection();
	}

	@Override
	public void refresh() {
	initializeCheckState();
	super.refresh();
	}

	public void uncheckAll() {
	fTreeViewer.setCheckedElements(new Object[0]);
	}

	protected void removeChildren(IBuildEntry entry, String parentFolder) {
	try {
	if (entry != null) {
	String[] tokens = entry.getTokens();
	for (int i = 0; i < tokens.length; i++) {
	if (tokens[i].indexOf(IPath.SEPARATOR) != -1 && tokens[i].startsWith(parentFolder) && !tokens[i].equals(parentFolder)) {
	entry.removeToken(tokens[i]);
	}
	}
	}
	} catch (CoreException e) {
	PDEPlugin.logException(e);
	}
	}

	@Override
	public void resourceChanged(IResourceChangeEvent event) {
	if (fTreeViewer.getControl().isDisposed())
	return;
	fDoRefresh = false;
	IResourceDelta delta = event.getDelta();
	try {
	if (delta != null)
	delta.accept(this);
	if (fDoRefresh) {
	asyncRefresh();
	fDoRefresh = false;
	}
	} catch (CoreException e) {
	}
	}

	@Override
	public boolean visit(IResourceDelta delta) throws CoreException {
	IResource resource = delta.getResource();
	IProject project = fBuildModel.getUnderlyingResource().getProject();

	if ((resource instanceof IFile \|\| resource instanceof IFolder) && resource.getProject().equals(project)) {
	if (delta.getKind() == IResourceDelta.ADDED \|\| delta.getKind() == IResourceDelta.REMOVED) {
	fDoRefresh = true;
	return false;
	}
	} else if (resource instanceof IProject && ((IProject) resource).equals(project)) {
	return delta.getKind() != IResourceDelta.REMOVED;
	}
	return true;
	}

	private void asyncRefresh() {
	Control control = fTreeViewer.getControl();
	if (!control.isDisposed()) {
	control.getDisplay().asyncExec(() -> {
	if (!fTreeViewer.getControl().isDisposed()) {
	fTreeViewer.refresh(true);
	initializeCheckState();
	}
	});
	}
	}

	@Override
	protected void selectionChanged(IStructuredSelection selection) {
	getPage().getPDEEditor().setSelection(selection);

	}

	@Override
	public void modelChanged(IModelChangedEvent event) {

	if (event.getChangeType() == IModelChangedEvent.WORLD_CHANGED) {
	markStale();
	}
	Object changeObject = event.getChangedObjects()[0];

	if (!(changeObject instanceof IBuildEntry && (((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_BIN_EXCLUDES) \|\| ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES) \|\| ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_SRC_EXCLUDES) \|\| ((IBuildEntry) changeObject).getName().equals(IBuildPropertiesConstants.PROPERTY_SRC_INCLUDES))))
	return;

	if ((fParentResource == null && fOriginalResource != null) \|\| (fOriginalResource == null && fParentResource != null)) {
	initializeCheckState();
	return;
	}
	if ((fParentResource == null && fOriginalResource == null) \|\| (event.getChangedProperty() != null && event.getChangedProperty().equals(IBuildPropertiesConstants.PROPERTY_BIN_INCLUDES))) {

	return;
	}

	fTreeViewer.setChecked(fParentResource, isChecked);
	fTreeViewer.setGrayed(fOriginalResource, false);
	fTreeViewer.setParentsGrayed(fParentResource, true);
	setParentsChecked(fParentResource);
	fTreeViewer.setGrayed(fParentResource, false);
	if (fParentResource instanceof IFolder) {
	fTreeViewer.setSubtreeChecked(fParentResource, isChecked);
	setChildrenGrayed(fParentResource, false);
	}
	while (!fOriginalResource.equals(fParentResource)) {
	fTreeViewer.setChecked(fOriginalResource, isChecked);
	fOriginalResource = fOriginalResource.getParent();
	}
	fParentResource = null;
	fOriginalResource = null;
	}
	}