plugins/org.eclipse.amalgam.explorer.activity/src/org/eclipse/amalgam/explorer/activity/api/dialog/SelectionDialog.java - amalgam/org.eclipse.amalgam - Git at Google

 /*******************************************************************************
  * Copyright (c)  2006, 2015 THALES GLOBAL SERVICES.
  * 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:
  *    Thales - initial API and implementation
  *******************************************************************************/
 package org.eclipse.amalgam.explorer.activity.api.dialog;

 import org.eclipse.emf.ecore.EObject;
 import org.eclipse.jface.action.Action;
 import org.eclipse.jface.dialogs.PopupDialog;
 import org.eclipse.jface.layout.GridDataFactory;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.AbstractTreeViewer;
 import org.eclipse.jface.viewers.IContentProvider;
 import org.eclipse.jface.viewers.ILabelProvider;
 import org.eclipse.jface.viewers.ISelection;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.ITreeContentProvider;
 import org.eclipse.jface.viewers.TreeViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.SelectionAdapter;
 import org.eclipse.swt.events.SelectionEvent;
 import org.eclipse.swt.graphics.Point;
 import org.eclipse.swt.graphics.Rectangle;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Button;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.ui.ISharedImages;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.dialogs.FilteredTree;
 import org.eclipse.ui.dialogs.PatternFilter;
 import org.eclipse.ui.forms.IMessage;
 import org.eclipse.ui.forms.widgets.FormText;
 import org.eclipse.ui.forms.widgets.FormToolkit;
 import org.eclipse.ui.forms.widgets.ScrolledForm;

 /**
  * Dialog that opens a popup dialog to display content in a {@link FormText}.
  *
  */
 public class SelectionDialog extends PopupDialog {
 	/**
 	 * Close the popup dialog.
 	 *
 	 */
 	private class CloseAction extends Action {
 		/**
 		 * @see org.eclipse.jface.action.Action#getImageDescriptor()
 		 */
 		@Override
 		public ImageDescriptor getImageDescriptor() {
 			return PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_TOOL_DELETE);
 		}

 		/**
 		 * @see org.eclipse.jface.action.Action#getToolTipText()
 		 */
 		@Override
 		public String getToolTipText() {
 			return Messages.DescriptionDialog_CloseAction_Title;
 		}

 		/**
 		 * @see org.eclipse.jface.action.Action#run()
 		 */
 		@Override
 		public void run() {
 			setReturnCode(CANCEL);
 			close();
 		}
 	}

 	private Point _anchor;
 	private Composite _composite;
 	private FormToolkit _toolkit;
 	protected String _title;
 	private Object _content;
 	private Object selected;
 	private ViewerFilter _filter;

 	private ILabelProvider _labelProvider;
 	private IContentProvider _contentProvider;

 	/**
 	 * Constructor.
 	 *
 	 * @param parent
 	 * @param content_p
 	 */
 	public SelectionDialog(Shell parent, Object content, ILabelProvider labelProvider, IContentProvider contentProvider) {
 		this(parent, content, labelProvider, contentProvider, null, null);

 	}

 	public SelectionDialog(Shell parent, Object content, ILabelProvider labelProvider,
 			IContentProvider contentProvider, ViewerFilter filter, String title) {
 		super(parent, SWT.NONE, true, false, false, false, false, null, null);
 		_anchor = parent.getDisplay().getCursorLocation();
 		_toolkit = new FormToolkit(parent.getDisplay());
 		_content = content;
 		_filter = filter;
 		_labelProvider = labelProvider;
 		_contentProvider = contentProvider;
 		_title = title;
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.PopupDialog#close()
 	 */
 	@Override
 	public boolean close() {
 		if (_toolkit != null) {
 			_toolkit.dispose();
 			_toolkit = null;
 		}
 		return super.close();
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.PopupDialog#createContents(org.eclipse.swt.widgets.Composite)
 	 */
 	@Override
 	protected Control createContents(Composite parent) {
 		getShell().setBackground(getShell().getDisplay().getSystemColor(SWT.COLOR_DARK_GRAY));
 		initializeBounds();
 		return createDialogArea(parent);
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.PopupDialog#createDialogArea(org.eclipse.swt.widgets.Composite)
 	 */
 	@SuppressWarnings("synthetic-access")
 	@Override
 	protected Control createDialogArea(Composite parent) {
 		_composite = (Composite) super.createDialogArea(parent);

 		ScrolledForm form = _toolkit.createScrolledForm(_composite);

 		_toolkit.decorateFormHeading(form.getForm());

 		form.setMessage(getTitle(), IMessage.NONE);

 		// add a Close button to the toolbar
 		form.getToolBarManager().add(new CloseAction());
 		form.getToolBarManager().update(true);
 		GridLayout layout = new GridLayout();

 		layout.marginLeft = 10;
 		layout.marginRight = 10;
 		layout.marginTop = 10;
 		layout.verticalSpacing = 10;
 		form.getBody().setLayout(layout);

 		PatternFilter patternFilter = new TreeSelectionPatternFilter(_filter);
 		FilteredTree filteredTree = new FilteredTree(form.getBody(), SWT.NONE | SWT.SINGLE | SWT.BORDER, patternFilter,
 				true);

 		_toolkit.adapt(filteredTree);
 		// Get the tree viewer.
 		final TreeViewer treeViewer = filteredTree.getViewer();

 		// Set Content provider.
 		treeViewer.setContentProvider(_contentProvider);
 		// Set label provider.
 		treeViewer.setLabelProvider(_labelProvider);

 		// Set Input
 		treeViewer.setInput(_content);

 		// set Filter
 		if (_filter != null)
 			treeViewer.addFilter(_filter);
 		form.setMinSize(getMinWidth(), getMinHeight());

 		// container for button
 		Composite container = new Composite(form.getBody(), SWT.NONE);
 		container.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
 		container.setLayout(new GridLayout(2, true));
 		container.setBackground(_toolkit.getColors().getBackground());
 		GridDataFactory factory = GridDataFactory.fillDefaults().grab(true, false);

 		// new ok button
 		Button finish = _toolkit.createButton(container, Messages.SelectionDialog_0, form.getStyle());
 		finish.setLayoutData(factory.create());
 		// ok button listener
 		finish.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {

 				super.widgetSelected(e);
 				ISelection selection = treeViewer.getSelection();
 				if (selection instanceof IStructuredSelection) {
 					selected = ((IStructuredSelection) selection).getFirstElement();
 					setReturnCode(OK);
 					close();

 				}
 			}
 		});

 		// new cancel button
 		Button cancel = _toolkit.createButton(container, Messages.SelectionDialog_1, form.getStyle());
 		cancel.setLayoutData(factory.create());
 		// cancel button listener
 		cancel.addSelectionListener(new SelectionAdapter() {
 			@Override
 			public void widgetSelected(SelectionEvent e) {

 				super.widgetSelected(e);
 				setReturnCode(CANCEL);
 				close();
 			}
 		});

 		return _composite;
 	}

 	private int getMinWidth() {
 		return 400;
 	}

 	protected int getMinHeight() {
 		return 400;
 	}

 	protected String getTitle() {
 		return _title;
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.PopupDialog#getFocusControl()
 	 */
 	@Override
 	protected Control getFocusControl() {
 		return _composite;
 	}

 	/**
 	 * @see org.eclipse.jface.dialogs.PopupDialog#getInitialLocation(org.eclipse.swt.graphics.Point)
 	 */
 	@Override
 	protected Point getInitialLocation(Point size) {
 		if (_anchor == null) {
 			return super.getInitialLocation(size);
 		}
 		Point point = _anchor;
 		Rectangle monitor = getShell().getMonitor().getClientArea();
 		if (monitor.width < point.x + size.x) {
 			point.x = Math.max(0, point.x - size.x);
 		}
 		if (monitor.height < point.y + size.y) {
 			point.y = Math.max(0, point.y - size.y);
 		}
 		return point;
 	}

 	public Object getSelection() {
 		return selected;
 	}

 	@Override
 	public int open() {

 		if (getShell() == null || getShell().isDisposed()) {

 			// create the window
 			create();
 		}

 		// limit the shell size to the display size
 		constrainShellSize();

 		// open the window
 		getShell().open();

 		// run the event loop if specified
 		if (true) {
 			runEventLoop(getShell());
 		}

 		return getReturnCode();
 	}

 	private void runEventLoop(Shell loopShell) {

 		// Use the display provided by the shell if possible
 		Display display;
 		if (getShell() == null) {
 			display = Display.getCurrent();
 		} else {
 			display = loopShell.getDisplay();
 		}

 		while (loopShell != null && !loopShell.isDisposed()) {
 			try {
 				if (!display.readAndDispatch()) {
 					display.sleep();
 				}
 			} catch (Throwable e) {
 				exceptionHandler.handleException(e);
 			}
 		}
 		if (!display.isDisposed())
 			display.update();
 	}

 	/**
 	 * Defines a default exception handler.
 	 */
 	private static class DefaultExceptionHandler implements IExceptionHandler {
 		/*
 		 * (non-Javadoc)
 		 *
 		 * @see
 		 * org.eclipse.jface.window.Window.IExceptionHandler#handleException
 		 * (java.lang.Throwable)
 		 */
 		public void handleException(Throwable t) {
 			if (t instanceof ThreadDeath) {
 				// Don't catch ThreadDeath as this is a normal occurrence when
 				// the thread dies
 				throw (ThreadDeath) t;
 			}
 			// Try to keep running.
 			t.printStackTrace();
 		}
 	}

 	private class TreeSelectionPatternFilter extends PatternFilter {

 		private ViewerFilter filter;

 		public TreeSelectionPatternFilter(ViewerFilter filter) {
 			this.filter = filter;
 		}

 		@Override
 		protected boolean isParentMatch(Viewer viewer, Object element) {
 			Object[] children = ((ITreeContentProvider) ((AbstractTreeViewer) viewer).getContentProvider())
 					.getChildren(element);
 			// apply all filters
 			if (filter != null && children != null) {
 				// if one child match, show the parent in tree

 				for (Object child : children) {
 					if (filter.select(viewer, null, child)) {
 						return super.isParentMatch(viewer, element);
 					}
 				}

 				return false;
 			} else {
 				return super.isParentMatch(viewer, element);
 			}
 		}

 		@Override
 		protected boolean isLeafMatch(Viewer viewer, Object element) {
 			if (element instanceof EObject) {
 				String labelText = ((EObject) element).toString();
 				if (labelText != null) {
 					return wordMatches(labelText);
 				}
 			}
 			return false;
 		}
 	}

 	/**
 	 * The exception handler for this application.
 	 */
 	private static IExceptionHandler exceptionHandler = new DefaultExceptionHandler();

 }
	/*******************************************************************************
	* Copyright (c) 2006, 2015 THALES GLOBAL SERVICES.
	* 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:
	* Thales - initial API and implementation
	*******************************************************************************/
	package org.eclipse.amalgam.explorer.activity.api.dialog;

	import org.eclipse.emf.ecore.EObject;
	import org.eclipse.jface.action.Action;
	import org.eclipse.jface.dialogs.PopupDialog;
	import org.eclipse.jface.layout.GridDataFactory;
	import org.eclipse.jface.resource.ImageDescriptor;
	import org.eclipse.jface.viewers.AbstractTreeViewer;
	import org.eclipse.jface.viewers.IContentProvider;
	import org.eclipse.jface.viewers.ILabelProvider;
	import org.eclipse.jface.viewers.ISelection;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.ITreeContentProvider;
	import org.eclipse.jface.viewers.TreeViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.SelectionAdapter;
	import org.eclipse.swt.events.SelectionEvent;
	import org.eclipse.swt.graphics.Point;
	import org.eclipse.swt.graphics.Rectangle;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Button;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Display;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.ui.ISharedImages;
	import org.eclipse.ui.PlatformUI;
	import org.eclipse.ui.dialogs.FilteredTree;
	import org.eclipse.ui.dialogs.PatternFilter;
	import org.eclipse.ui.forms.IMessage;
	import org.eclipse.ui.forms.widgets.FormText;
	import org.eclipse.ui.forms.widgets.FormToolkit;
	import org.eclipse.ui.forms.widgets.ScrolledForm;

	/**
	* Dialog that opens a popup dialog to display content in a {@link FormText}.
	*
	*/
	public class SelectionDialog extends PopupDialog {
	/**
	* Close the popup dialog.
	*
	*/
	private class CloseAction extends Action {
	/**
	* @see org.eclipse.jface.action.Action#getImageDescriptor()
	*/
	@Override
	public ImageDescriptor getImageDescriptor() {
	return PlatformUI.getWorkbench().getSharedImages().getImageDescriptor(ISharedImages.IMG_TOOL_DELETE);
	}

	/**
	* @see org.eclipse.jface.action.Action#getToolTipText()
	*/
	@Override
	public String getToolTipText() {
	return Messages.DescriptionDialog_CloseAction_Title;
	}

	/**
	* @see org.eclipse.jface.action.Action#run()
	*/
	@Override
	public void run() {
	setReturnCode(CANCEL);
	close();
	}
	}

	private Point _anchor;
	private Composite _composite;
	private FormToolkit _toolkit;
	protected String _title;
	private Object _content;
	private Object selected;
	private ViewerFilter _filter;

	private ILabelProvider _labelProvider;
	private IContentProvider _contentProvider;

	/**
	* Constructor.
	*
	* @param parent
	* @param content_p
	*/
	public SelectionDialog(Shell parent, Object content, ILabelProvider labelProvider, IContentProvider contentProvider) {
	this(parent, content, labelProvider, contentProvider, null, null);

	}

	public SelectionDialog(Shell parent, Object content, ILabelProvider labelProvider,
	IContentProvider contentProvider, ViewerFilter filter, String title) {
	super(parent, SWT.NONE, true, false, false, false, false, null, null);
	_anchor = parent.getDisplay().getCursorLocation();
	_toolkit = new FormToolkit(parent.getDisplay());
	_content = content;
	_filter = filter;
	_labelProvider = labelProvider;
	_contentProvider = contentProvider;
	_title = title;
	}

	/**
	* @see org.eclipse.jface.dialogs.PopupDialog#close()
	*/
	@Override
	public boolean close() {
	if (_toolkit != null) {
	_toolkit.dispose();
	_toolkit = null;
	}
	return super.close();
	}

	/**
	* @see org.eclipse.jface.dialogs.PopupDialog#createContents(org.eclipse.swt.widgets.Composite)
	*/
	@Override
	protected Control createContents(Composite parent) {
	getShell().setBackground(getShell().getDisplay().getSystemColor(SWT.COLOR_DARK_GRAY));
	initializeBounds();
	return createDialogArea(parent);
	}

	/**
	* @see org.eclipse.jface.dialogs.PopupDialog#createDialogArea(org.eclipse.swt.widgets.Composite)
	*/
	@SuppressWarnings("synthetic-access")
	@Override
	protected Control createDialogArea(Composite parent) {
	_composite = (Composite) super.createDialogArea(parent);

	ScrolledForm form = _toolkit.createScrolledForm(_composite);

	_toolkit.decorateFormHeading(form.getForm());

	form.setMessage(getTitle(), IMessage.NONE);

	// add a Close button to the toolbar
	form.getToolBarManager().add(new CloseAction());
	form.getToolBarManager().update(true);
	GridLayout layout = new GridLayout();

	layout.marginLeft = 10;
	layout.marginRight = 10;
	layout.marginTop = 10;
	layout.verticalSpacing = 10;
	form.getBody().setLayout(layout);

	PatternFilter patternFilter = new TreeSelectionPatternFilter(_filter);
	FilteredTree filteredTree = new FilteredTree(form.getBody(), SWT.NONE \| SWT.SINGLE \| SWT.BORDER, patternFilter,
	true);

	_toolkit.adapt(filteredTree);
	// Get the tree viewer.
	final TreeViewer treeViewer = filteredTree.getViewer();

	// Set Content provider.
	treeViewer.setContentProvider(_contentProvider);
	// Set label provider.
	treeViewer.setLabelProvider(_labelProvider);

	// Set Input
	treeViewer.setInput(_content);

	// set Filter
	if (_filter != null)
	treeViewer.addFilter(_filter);
	form.setMinSize(getMinWidth(), getMinHeight());

	// container for button
	Composite container = new Composite(form.getBody(), SWT.NONE);
	container.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_END));
	container.setLayout(new GridLayout(2, true));
	container.setBackground(_toolkit.getColors().getBackground());
	GridDataFactory factory = GridDataFactory.fillDefaults().grab(true, false);

	// new ok button
	Button finish = _toolkit.createButton(container, Messages.SelectionDialog_0, form.getStyle());
	finish.setLayoutData(factory.create());
	// ok button listener
	finish.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {

	super.widgetSelected(e);
	ISelection selection = treeViewer.getSelection();
	if (selection instanceof IStructuredSelection) {
	selected = ((IStructuredSelection) selection).getFirstElement();
	setReturnCode(OK);
	close();

	}
	}
	});

	// new cancel button
	Button cancel = _toolkit.createButton(container, Messages.SelectionDialog_1, form.getStyle());
	cancel.setLayoutData(factory.create());
	// cancel button listener
	cancel.addSelectionListener(new SelectionAdapter() {
	@Override
	public void widgetSelected(SelectionEvent e) {

	super.widgetSelected(e);
	setReturnCode(CANCEL);
	close();
	}
	});

	return _composite;
	}

	private int getMinWidth() {
	return 400;
	}

	protected int getMinHeight() {
	return 400;
	}

	protected String getTitle() {
	return _title;
	}

	/**
	* @see org.eclipse.jface.dialogs.PopupDialog#getFocusControl()
	*/
	@Override
	protected Control getFocusControl() {
	return _composite;
	}

	/**
	* @see org.eclipse.jface.dialogs.PopupDialog#getInitialLocation(org.eclipse.swt.graphics.Point)
	*/
	@Override
	protected Point getInitialLocation(Point size) {
	if (_anchor == null) {
	return super.getInitialLocation(size);
	}
	Point point = _anchor;
	Rectangle monitor = getShell().getMonitor().getClientArea();
	if (monitor.width < point.x + size.x) {
	point.x = Math.max(0, point.x - size.x);
	}
	if (monitor.height < point.y + size.y) {
	point.y = Math.max(0, point.y - size.y);
	}
	return point;
	}

	public Object getSelection() {
	return selected;
	}

	@Override
	public int open() {

	if (getShell() == null \|\| getShell().isDisposed()) {

	// create the window
	create();
	}

	// limit the shell size to the display size
	constrainShellSize();

	// open the window
	getShell().open();

	// run the event loop if specified
	if (true) {
	runEventLoop(getShell());
	}

	return getReturnCode();
	}

	private void runEventLoop(Shell loopShell) {

	// Use the display provided by the shell if possible
	Display display;
	if (getShell() == null) {
	display = Display.getCurrent();
	} else {
	display = loopShell.getDisplay();
	}

	while (loopShell != null && !loopShell.isDisposed()) {
	try {
	if (!display.readAndDispatch()) {
	display.sleep();
	}
	} catch (Throwable e) {
	exceptionHandler.handleException(e);
	}
	}
	if (!display.isDisposed())
	display.update();
	}

	/**
	* Defines a default exception handler.
	*/
	private static class DefaultExceptionHandler implements IExceptionHandler {
	/*
	* (non-Javadoc)
	*
	* @see
	* org.eclipse.jface.window.Window.IExceptionHandler#handleException
	* (java.lang.Throwable)
	*/
	public void handleException(Throwable t) {
	if (t instanceof ThreadDeath) {
	// Don't catch ThreadDeath as this is a normal occurrence when
	// the thread dies
	throw (ThreadDeath) t;
	}
	// Try to keep running.
	t.printStackTrace();
	}
	}

	private class TreeSelectionPatternFilter extends PatternFilter {

	private ViewerFilter filter;

	public TreeSelectionPatternFilter(ViewerFilter filter) {
	this.filter = filter;
	}

	@Override
	protected boolean isParentMatch(Viewer viewer, Object element) {
	Object[] children = ((ITreeContentProvider) ((AbstractTreeViewer) viewer).getContentProvider())
	.getChildren(element);
	// apply all filters
	if (filter != null && children != null) {
	// if one child match, show the parent in tree

	for (Object child : children) {
	if (filter.select(viewer, null, child)) {
	return super.isParentMatch(viewer, element);
	}
	}

	return false;
	} else {
	return super.isParentMatch(viewer, element);
	}
	}

	@Override
	protected boolean isLeafMatch(Viewer viewer, Object element) {
	if (element instanceof EObject) {
	String labelText = ((EObject) element).toString();
	if (labelText != null) {
	return wordMatches(labelText);
	}
	}
	return false;
	}
	}

	/**
	* The exception handler for this application.
	*/
	private static IExceptionHandler exceptionHandler = new DefaultExceptionHandler();

	}