bundles/org.eclipse.e4.tools.emf.ui/src/org/eclipse/e4/tools/emf/ui/internal/common/resourcelocator/dialogs/FindContributionDialog.java - platform/eclipse.platform.ui.tools - Git at Google

 /*******************************************************************************
  * Copyright (c) 2010, 2017 BestSolution.at 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:
  *     Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
  *	   Lars Vogel <lars.vogel@gmail.com> - Enhancements
  *     Steven Spungin <steven@spungin.tv> - Modified to be generic picker, Bug 424730, Ongoing Maintenance
  ******************************************************************************/
 package org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.dialogs;

 import java.util.Iterator;

 import org.eclipse.core.databinding.observable.list.IObservableList;
 import org.eclipse.core.databinding.observable.list.WritableList;
 import org.eclipse.core.resources.IProject;
 import org.eclipse.e4.core.contexts.IEclipseContext;
 import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.ContributionData;
 import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.ContributionResultHandler;
 import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.Filter;
 import org.eclipse.e4.tools.emf.ui.internal.Messages;
 import org.eclipse.e4.tools.emf.ui.internal.common.ClassContributionCollector;
 import org.eclipse.e4.tools.emf.ui.internal.common.component.tabs.empty.E;
 import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
 import org.eclipse.jface.dialogs.TitleAreaDialog;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.StyledCellLabelProvider;
 import org.eclipse.jface.viewers.StyledString;
 import org.eclipse.jface.viewers.TableViewer;
 import org.eclipse.jface.viewers.Viewer;
 import org.eclipse.jface.viewers.ViewerCell;
 import org.eclipse.jface.viewers.ViewerFilter;
 import org.eclipse.swt.SWT;
 import org.eclipse.swt.events.KeyAdapter;
 import org.eclipse.swt.events.KeyEvent;
 import org.eclipse.swt.events.ModifyEvent;
 import org.eclipse.swt.events.ModifyListener;
 import org.eclipse.swt.graphics.Image;
 import org.eclipse.swt.layout.GridData;
 import org.eclipse.swt.layout.GridLayout;
 import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Control;
 import org.eclipse.swt.widgets.Label;
 import org.eclipse.swt.widgets.Shell;
 import org.eclipse.swt.widgets.Text;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleContext;
 import org.osgi.framework.ServiceReference;

 /**
  * A find dialog for model contributions. List can be filtered by bundle and/or
  * package
  *
  * @author Steven Spungin
  *
  */
 public class FindContributionDialog extends TitleAreaDialog {
 	private IProject project;
 	private Image javaClassImage;
 	private TableViewer viewer;
 	private Messages Messages;
 	private String bundleclassUri;
 	@SuppressWarnings("unused")
 	private IEclipseContext context;
 	private String packageFilter;
 	private String bundleFilter;
 	private Bundle bundle;
 	private String mode;
 	private Image titleImage;
 	private String platformUri;

 	public FindContributionDialog(IEclipseContext context) {
 		super(context.get(Shell.class));
 		this.context = context;
 		this.project = context.get(IProject.class);
 		this.Messages = context.get(Messages.class);
 		packageFilter = (String) context.get("package"); //$NON-NLS-1$
 		bundleFilter = (String) context.get("bundle"); //$NON-NLS-1$
 		bundle = context.get(Bundle.class);
 		mode = (String) context.get("mode"); //$NON-NLS-1$
 	}

 	@Override
 	protected boolean isResizable() {
 		return true;
 	}

 	@Override
 	protected Control createDialogArea(Composite parent) {
 		Composite comp = (Composite) super.createDialogArea(parent);

 		// TODO param
 		getShell().setText(Messages.ContributionClassDialog_ShellTitle);

 		if ("show-bundles".equals(mode)) { //$NON-NLS-1$
 			// TODO create icon
 		} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
 			// TODO create icon
 		} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
 			// TODO create icon
 		} else {
 			titleImage = new Image(comp.getDisplay(), getClass().getClassLoader().getResourceAsStream("/icons/full/wizban/newclass_wiz.png")); //$NON-NLS-1$
 			setTitleImage(titleImage);
 		}

 		getShell().addDisposeListener(e -> {
 			javaClassImage.dispose();
 			if (titleImage != null) {
 				titleImage.dispose();
 			}
 		});

 		javaClassImage = new Image(getShell().getDisplay(), getClass().getClassLoader().getResourceAsStream("/icons/full/obj16/class_obj.png")); //$NON-NLS-1$

 		Composite container = new Composite(comp, SWT.NONE);
 		container.setLayoutData(new GridData(GridData.FILL_BOTH));
 		container.setLayout(new GridLayout(2, false));

 		Label l = new Label(container, SWT.NONE);
 		// TODO param
 		l.setText(Messages.ContributionClassDialog_Label_Classname);

 		final Text t = new Text(container, SWT.BORDER | SWT.SEARCH | SWT.ICON_SEARCH);
 		t.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
 		// TODO param
 		t.setMessage(Messages.ContributionClassDialog_FilterText_Message);

 		new Label(container, SWT.NONE);

 		viewer = new TableViewer(container, SWT.FULL_SELECTION | SWT.BORDER);
 		GridData gd = new GridData(GridData.FILL_BOTH);
 		viewer.getControl().setLayoutData(gd);
 		viewer.setContentProvider(new ObservableListContentProvider());
 		viewer.setLabelProvider(new StyledCellLabelProvider() {
 			@Override
 			public void update(ViewerCell cell) {
 				ContributionData data = (ContributionData) cell.getElement();
 				StyledString styledString = new StyledString();
 				if ("show-bundles".equals(mode)) { //$NON-NLS-1$
 					styledString.append(data.bundleName, StyledString.DECORATIONS_STYLER);
 				} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
 					int dot = data.className.lastIndexOf("."); //$NON-NLS-1$
 					String packageName;
 					if (dot >= 0) {
 						packageName = data.className.substring(0, dot);
 					} else {
 						packageName = ""; //$NON-NLS-1$
 					}
 					styledString.append(packageName, StyledString.DECORATIONS_STYLER);
 				} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
 					styledString.append(data.iconPath, null);

 					if (data.bundleName != null) {
 						styledString.append(" - " + data.bundleName, StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
 					}

 					if (data.sourceType != null) {
 						styledString.append(" - ", StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
 						styledString.append(data.sourceType + "", StyledString.COUNTER_STYLER); //$NON-NLS-1$
 					}

 					if (data.iconPath == null) {
 						cell.setImage(javaClassImage);
 					}
 				} else {
 					styledString.append(data.className, null);

 					if (data.bundleName != null) {
 						styledString.append(" - " + data.bundleName, StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
 					}

 					if (data.sourceType != null) {
 						styledString.append(" - ", StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
 						styledString.append(data.sourceType + "", StyledString.COUNTER_STYLER); //$NON-NLS-1$
 					}

 					if (data.iconPath == null) {
 						cell.setImage(javaClassImage);
 					}
 				}

 				cell.setText(styledString.getString());
 				cell.setStyleRanges(styledString.getStyleRanges());
 			}
 		});
 		viewer.addDoubleClickListener(event -> okPressed());

 		final WritableList list = new WritableList();
 		viewer.setInput(list);

 		final ClassContributionCollector collector = getCollector();

 		t.addModifyListener(new ModifyListener() {
 			private ContributionResultHandlerImpl currentResultHandler;

 			@Override
 			public void modifyText(ModifyEvent e) {
 				if (currentResultHandler != null) {
 					currentResultHandler.cancled = true;
 				}
 				list.clear();
 				currentResultHandler = new ContributionResultHandlerImpl(list);
 				Filter filter = new Filter(project, t.getText());
 				collector.findContributions(filter, currentResultHandler);
 				t.addKeyListener(new KeyAdapter() {
 					@Override
 					public void keyPressed(KeyEvent e) {
 						if (e.keyCode == SWT.ARROW_DOWN) {
 							if (viewer.getTable().getItemCount() > 0) {
 								viewer.getTable().setFocus();
 								viewer.getTable().select(0);
 							}
 						}
 					}
 				});
 				viewer.getTable().addKeyListener(new KeyAdapter() {
 					@Override
 					public void keyPressed(KeyEvent e) {
 						super.keyPressed(e);
 						if ((e.keyCode == SWT.ARROW_UP) && (viewer.getTable().getSelectionIndex() == 0)) {
 							t.setFocus();
 						}
 					}
 				});
 			}
 		});

 		viewer.setFilters(new ViewerFilter[] { new ViewerFilter() {

 			@Override
 			public boolean select(Viewer viewer, Object parentElement, Object element) {
 				ContributionData cd = (ContributionData) element;
 				if ("show-bundles".equals(mode)) { //$NON-NLS-1$
 					// only add first item from each bundle
 					boolean found = false;
 					for (Iterator<?> it = list.iterator(); it.hasNext();) {
 						ContributionData cd2 = (ContributionData) it.next();
 						if (cd2.bundleName == null || cd2.bundleName.equals(cd.bundleName)) {
 							if (found == false) {
 								found = true;
 							} else {
 								return false;
 							}
 						}
 					}
 					return true;
 				} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
 					if (bundleFilter != null && bundleFilter.isEmpty() == false) {
 						if (!bundleFilter.equals(cd.bundleName)) {
 							return false;
 						}
 					}
 					String packageName;
 					int last = cd.className.lastIndexOf("."); //$NON-NLS-1$
 					if (last >= 0) {
 						packageName = cd.className.substring(0, last);
 					} else {
 						packageName = ""; //$NON-NLS-1$
 					}
 					// only add first item from each package
 					boolean found = false;
 					for (Iterator<?> it = list.iterator(); it.hasNext();) {
 						boolean matches = false;
 						ContributionData cd2 = (ContributionData) it.next();
 						if (packageName.isEmpty() && cd2.className.contains(".") == false) { //$NON-NLS-1$
 							matches = true;
 						} else if (cd2.className.startsWith(packageName + ".")) { //$NON-NLS-1$
 							matches = true;
 						}
 						if (matches) {
 							if (found == false) {
 								found = true;
 							} else {
 								return false;
 							}
 						}
 					}
 					return true;
 				} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
 					if (cd.iconPath == null) {
 						return false;
 					}
 					if (bundleFilter != null && bundleFilter.isEmpty() == false) {
 						if (!bundleFilter.equals(cd.bundleName)) {
 							return false;
 						}
 					}
 					if (packageFilter != null && packageFilter.isEmpty() == false) {
 						if (!cd.className.startsWith(packageFilter + ".")) { //$NON-NLS-1$
 							return false;
 						}
 					}
 					return true;
 				} else {
 					if (bundleFilter != null && bundleFilter.isEmpty() == false) {
 						if (!bundleFilter.equals(cd.bundleName)) {
 							return false;
 						}
 					}
 					if (packageFilter != null && packageFilter.isEmpty() == false) {
 						if (!cd.className.startsWith(packageFilter + ".")) { //$NON-NLS-1$
 							return false;
 						}
 					}

 					return true;
 				}
 			}
 		} });

 		StringBuilder sbFind = new StringBuilder();

 		if ("show-bundles".equals(mode)) { //$NON-NLS-1$
 			setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findBundle);
 			sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findBundle);
 		} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
 			setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findPackage);
 			sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findPackage);
 			if (E.notEmpty(bundleFilter)) {
 				sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 		} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
 			setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findIcon);
 			sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findIcon);
 			if (E.notEmpty(bundleFilter)) {
 				sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 			if (E.notEmpty(packageFilter)) {
 				sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inPackage + " " + packageFilter); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 		} else {
 			setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findClass);
 			sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findClass);
 			if (E.notEmpty(bundleFilter)) {
 				sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 			if (E.notEmpty(packageFilter)) {
 				sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inPackage + " " + packageFilter); //$NON-NLS-1$ //$NON-NLS-2$
 			}
 		}
 		setMessage(sbFind.toString());

 		// preload list if few items
 		if (list.size() <= 30) {
 			t.notifyListeners(SWT.Modify, null);
 		}
 		return comp;
 	}

 	@Override
 	protected void okPressed() {
 		IStructuredSelection s = (IStructuredSelection) viewer.getSelection();
 		if (!s.isEmpty()) {
 			ContributionData cd = (ContributionData) s.getFirstElement();
 			String uri = "bundleclass://" + cd.bundleName + "/" + cd.className; //$NON-NLS-1$ //$NON-NLS-2$
 			platformUri = "platform:/plugin/" + cd.bundleName + "/" + cd.className; //$NON-NLS-1$ //$NON-NLS-2$
 			setBundleclassUri(uri);
 			super.okPressed();
 		} else {
 			super.cancelPressed();
 		}
 	}

 	private ClassContributionCollector getCollector() {
 		if (bundle == null) {
 			return null;
 		}
 		BundleContext context = bundle.getBundleContext();
 		ServiceReference<?> ref = context.getServiceReference(ClassContributionCollector.class.getName());
 		if (ref != null) {
 			return (ClassContributionCollector) context.getService(ref);
 		}
 		return null;
 	}

 	public String getBundleclassUri() {
 		return bundleclassUri;
 	}

 	public String getPlatformUri() {
 		return platformUri;
 	}

 	public void setBundleclassUri(String bundleclass) {
 		this.bundleclassUri = bundleclass;
 	}

 	private static class ContributionResultHandlerImpl implements ContributionResultHandler {
 		private boolean cancled = false;
 		private IObservableList list;

 		public ContributionResultHandlerImpl(IObservableList list) {
 			this.list = list;
 		}

 		@Override
 		public void result(ContributionData data) {
 			if (!cancled) {
 				list.add(data);
 			}
 		}

 		@Override
 		public void moreResults(int hint, Filter filter) {
 		}

 	}
 }
	/*******************************************************************************
	* Copyright (c) 2010, 2017 BestSolution.at 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:
	* Tom Schindl <tom.schindl@bestsolution.at> - initial API and implementation
	* Lars Vogel <lars.vogel@gmail.com> - Enhancements
	* Steven Spungin <steven@spungin.tv> - Modified to be generic picker, Bug 424730, Ongoing Maintenance
	******************************************************************************/
	package org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.dialogs;

	import java.util.Iterator;

	import org.eclipse.core.databinding.observable.list.IObservableList;
	import org.eclipse.core.databinding.observable.list.WritableList;
	import org.eclipse.core.resources.IProject;
	import org.eclipse.e4.core.contexts.IEclipseContext;
	import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.ContributionData;
	import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.ContributionResultHandler;
	import org.eclipse.e4.tools.emf.ui.common.IClassContributionProvider.Filter;
	import org.eclipse.e4.tools.emf.ui.internal.Messages;
	import org.eclipse.e4.tools.emf.ui.internal.common.ClassContributionCollector;
	import org.eclipse.e4.tools.emf.ui.internal.common.component.tabs.empty.E;
	import org.eclipse.jface.databinding.viewers.ObservableListContentProvider;
	import org.eclipse.jface.dialogs.TitleAreaDialog;
	import org.eclipse.jface.viewers.IStructuredSelection;
	import org.eclipse.jface.viewers.StyledCellLabelProvider;
	import org.eclipse.jface.viewers.StyledString;
	import org.eclipse.jface.viewers.TableViewer;
	import org.eclipse.jface.viewers.Viewer;
	import org.eclipse.jface.viewers.ViewerCell;
	import org.eclipse.jface.viewers.ViewerFilter;
	import org.eclipse.swt.SWT;
	import org.eclipse.swt.events.KeyAdapter;
	import org.eclipse.swt.events.KeyEvent;
	import org.eclipse.swt.events.ModifyEvent;
	import org.eclipse.swt.events.ModifyListener;
	import org.eclipse.swt.graphics.Image;
	import org.eclipse.swt.layout.GridData;
	import org.eclipse.swt.layout.GridLayout;
	import org.eclipse.swt.widgets.Composite;
	import org.eclipse.swt.widgets.Control;
	import org.eclipse.swt.widgets.Label;
	import org.eclipse.swt.widgets.Shell;
	import org.eclipse.swt.widgets.Text;
	import org.osgi.framework.Bundle;
	import org.osgi.framework.BundleContext;
	import org.osgi.framework.ServiceReference;

	/**
	* A find dialog for model contributions. List can be filtered by bundle and/or
	* package
	*
	* @author Steven Spungin
	*
	*/
	public class FindContributionDialog extends TitleAreaDialog {
	private IProject project;
	private Image javaClassImage;
	private TableViewer viewer;
	private Messages Messages;
	private String bundleclassUri;
	@SuppressWarnings("unused")
	private IEclipseContext context;
	private String packageFilter;
	private String bundleFilter;
	private Bundle bundle;
	private String mode;
	private Image titleImage;
	private String platformUri;

	public FindContributionDialog(IEclipseContext context) {
	super(context.get(Shell.class));
	this.context = context;
	this.project = context.get(IProject.class);
	this.Messages = context.get(Messages.class);
	packageFilter = (String) context.get("package"); //$NON-NLS-1$
	bundleFilter = (String) context.get("bundle"); //$NON-NLS-1$
	bundle = context.get(Bundle.class);
	mode = (String) context.get("mode"); //$NON-NLS-1$
	}

	@Override
	protected boolean isResizable() {
	return true;
	}

	@Override
	protected Control createDialogArea(Composite parent) {
	Composite comp = (Composite) super.createDialogArea(parent);

	// TODO param
	getShell().setText(Messages.ContributionClassDialog_ShellTitle);

	if ("show-bundles".equals(mode)) { //$NON-NLS-1$
	// TODO create icon
	} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
	// TODO create icon
	} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
	// TODO create icon
	} else {
	titleImage = new Image(comp.getDisplay(), getClass().getClassLoader().getResourceAsStream("/icons/full/wizban/newclass_wiz.png")); //$NON-NLS-1$
	setTitleImage(titleImage);
	}

	getShell().addDisposeListener(e -> {
	javaClassImage.dispose();
	if (titleImage != null) {
	titleImage.dispose();
	}
	});

	javaClassImage = new Image(getShell().getDisplay(), getClass().getClassLoader().getResourceAsStream("/icons/full/obj16/class_obj.png")); //$NON-NLS-1$

	Composite container = new Composite(comp, SWT.NONE);
	container.setLayoutData(new GridData(GridData.FILL_BOTH));
	container.setLayout(new GridLayout(2, false));

	Label l = new Label(container, SWT.NONE);
	// TODO param
	l.setText(Messages.ContributionClassDialog_Label_Classname);

	final Text t = new Text(container, SWT.BORDER \| SWT.SEARCH \| SWT.ICON_SEARCH);
	t.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));
	// TODO param
	t.setMessage(Messages.ContributionClassDialog_FilterText_Message);

	new Label(container, SWT.NONE);

	viewer = new TableViewer(container, SWT.FULL_SELECTION \| SWT.BORDER);
	GridData gd = new GridData(GridData.FILL_BOTH);
	viewer.getControl().setLayoutData(gd);
	viewer.setContentProvider(new ObservableListContentProvider());
	viewer.setLabelProvider(new StyledCellLabelProvider() {
	@Override
	public void update(ViewerCell cell) {
	ContributionData data = (ContributionData) cell.getElement();
	StyledString styledString = new StyledString();
	if ("show-bundles".equals(mode)) { //$NON-NLS-1$
	styledString.append(data.bundleName, StyledString.DECORATIONS_STYLER);
	} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
	int dot = data.className.lastIndexOf("."); //$NON-NLS-1$
	String packageName;
	if (dot >= 0) {
	packageName = data.className.substring(0, dot);
	} else {
	packageName = ""; //$NON-NLS-1$
	}
	styledString.append(packageName, StyledString.DECORATIONS_STYLER);
	} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
	styledString.append(data.iconPath, null);

	if (data.bundleName != null) {
	styledString.append(" - " + data.bundleName, StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
	}

	if (data.sourceType != null) {
	styledString.append(" - ", StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
	styledString.append(data.sourceType + "", StyledString.COUNTER_STYLER); //$NON-NLS-1$
	}

	if (data.iconPath == null) {
	cell.setImage(javaClassImage);
	}
	} else {
	styledString.append(data.className, null);

	if (data.bundleName != null) {
	styledString.append(" - " + data.bundleName, StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
	}

	if (data.sourceType != null) {
	styledString.append(" - ", StyledString.DECORATIONS_STYLER); //$NON-NLS-1$
	styledString.append(data.sourceType + "", StyledString.COUNTER_STYLER); //$NON-NLS-1$
	}

	if (data.iconPath == null) {
	cell.setImage(javaClassImage);
	}
	}

	cell.setText(styledString.getString());
	cell.setStyleRanges(styledString.getStyleRanges());
	}
	});
	viewer.addDoubleClickListener(event -> okPressed());

	final WritableList list = new WritableList();
	viewer.setInput(list);

	final ClassContributionCollector collector = getCollector();

	t.addModifyListener(new ModifyListener() {
	private ContributionResultHandlerImpl currentResultHandler;

	@Override
	public void modifyText(ModifyEvent e) {
	if (currentResultHandler != null) {
	currentResultHandler.cancled = true;
	}
	list.clear();
	currentResultHandler = new ContributionResultHandlerImpl(list);
	Filter filter = new Filter(project, t.getText());
	collector.findContributions(filter, currentResultHandler);
	t.addKeyListener(new KeyAdapter() {
	@Override
	public void keyPressed(KeyEvent e) {
	if (e.keyCode == SWT.ARROW_DOWN) {
	if (viewer.getTable().getItemCount() > 0) {
	viewer.getTable().setFocus();
	viewer.getTable().select(0);
	}
	}
	}
	});
	viewer.getTable().addKeyListener(new KeyAdapter() {
	@Override
	public void keyPressed(KeyEvent e) {
	super.keyPressed(e);
	if ((e.keyCode == SWT.ARROW_UP) && (viewer.getTable().getSelectionIndex() == 0)) {
	t.setFocus();
	}
	}
	});
	}
	});

	viewer.setFilters(new ViewerFilter[] { new ViewerFilter() {

	@Override
	public boolean select(Viewer viewer, Object parentElement, Object element) {
	ContributionData cd = (ContributionData) element;
	if ("show-bundles".equals(mode)) { //$NON-NLS-1$
	// only add first item from each bundle
	boolean found = false;
	for (Iterator<?> it = list.iterator(); it.hasNext();) {
	ContributionData cd2 = (ContributionData) it.next();
	if (cd2.bundleName == null \|\| cd2.bundleName.equals(cd.bundleName)) {
	if (found == false) {
	found = true;
	} else {
	return false;
	}
	}
	}
	return true;
	} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
	if (bundleFilter != null && bundleFilter.isEmpty() == false) {
	if (!bundleFilter.equals(cd.bundleName)) {
	return false;
	}
	}
	String packageName;
	int last = cd.className.lastIndexOf("."); //$NON-NLS-1$
	if (last >= 0) {
	packageName = cd.className.substring(0, last);
	} else {
	packageName = ""; //$NON-NLS-1$
	}
	// only add first item from each package
	boolean found = false;
	for (Iterator<?> it = list.iterator(); it.hasNext();) {
	boolean matches = false;
	ContributionData cd2 = (ContributionData) it.next();
	if (packageName.isEmpty() && cd2.className.contains(".") == false) { //$NON-NLS-1$
	matches = true;
	} else if (cd2.className.startsWith(packageName + ".")) { //$NON-NLS-1$
	matches = true;
	}
	if (matches) {
	if (found == false) {
	found = true;
	} else {
	return false;
	}
	}
	}
	return true;
	} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
	if (cd.iconPath == null) {
	return false;
	}
	if (bundleFilter != null && bundleFilter.isEmpty() == false) {
	if (!bundleFilter.equals(cd.bundleName)) {
	return false;
	}
	}
	if (packageFilter != null && packageFilter.isEmpty() == false) {
	if (!cd.className.startsWith(packageFilter + ".")) { //$NON-NLS-1$
	return false;
	}
	}
	return true;
	} else {
	if (bundleFilter != null && bundleFilter.isEmpty() == false) {
	if (!bundleFilter.equals(cd.bundleName)) {
	return false;
	}
	}
	if (packageFilter != null && packageFilter.isEmpty() == false) {
	if (!cd.className.startsWith(packageFilter + ".")) { //$NON-NLS-1$
	return false;
	}
	}

	return true;
	}
	}
	} });

	StringBuilder sbFind = new StringBuilder();

	if ("show-bundles".equals(mode)) { //$NON-NLS-1$
	setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findBundle);
	sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findBundle);
	} else if ("show-packages".equals(mode)) { //$NON-NLS-1$
	setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findPackage);
	sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findPackage);
	if (E.notEmpty(bundleFilter)) {
	sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
	}
	} else if ("show-icons".equals(mode)) { //$NON-NLS-1$
	setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findIcon);
	sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findIcon);
	if (E.notEmpty(bundleFilter)) {
	sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
	}
	if (E.notEmpty(packageFilter)) {
	sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inPackage + " " + packageFilter); //$NON-NLS-1$ //$NON-NLS-2$
	}
	} else {
	setTitle(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findClass);
	sbFind.append(org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_findClass);
	if (E.notEmpty(bundleFilter)) {
	sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inBundle + " " + bundleFilter); //$NON-NLS-1$ //$NON-NLS-2$
	}
	if (E.notEmpty(packageFilter)) {
	sbFind.append(" " + org.eclipse.e4.tools.emf.ui.internal.common.resourcelocator.Messages.FindContributionDialog_inPackage + " " + packageFilter); //$NON-NLS-1$ //$NON-NLS-2$
	}
	}
	setMessage(sbFind.toString());

	// preload list if few items
	if (list.size() <= 30) {
	t.notifyListeners(SWT.Modify, null);
	}
	return comp;
	}

	@Override
	protected void okPressed() {
	IStructuredSelection s = (IStructuredSelection) viewer.getSelection();
	if (!s.isEmpty()) {
	ContributionData cd = (ContributionData) s.getFirstElement();
	String uri = "bundleclass://" + cd.bundleName + "/" + cd.className; //$NON-NLS-1$ //$NON-NLS-2$
	platformUri = "platform:/plugin/" + cd.bundleName + "/" + cd.className; //$NON-NLS-1$ //$NON-NLS-2$
	setBundleclassUri(uri);
	super.okPressed();
	} else {
	super.cancelPressed();
	}
	}

	private ClassContributionCollector getCollector() {
	if (bundle == null) {
	return null;
	}
	BundleContext context = bundle.getBundleContext();
	ServiceReference<?> ref = context.getServiceReference(ClassContributionCollector.class.getName());
	if (ref != null) {
	return (ClassContributionCollector) context.getService(ref);
	}
	return null;
	}

	public String getBundleclassUri() {
	return bundleclassUri;
	}

	public String getPlatformUri() {
	return platformUri;
	}

	public void setBundleclassUri(String bundleclass) {
	this.bundleclassUri = bundleclass;
	}

	private static class ContributionResultHandlerImpl implements ContributionResultHandler {
	private boolean cancled = false;
	private IObservableList list;

	public ContributionResultHandlerImpl(IObservableList list) {
	this.list = list;
	}

	@Override
	public void result(ContributionData data) {
	if (!cancled) {
	list.add(data);
	}
	}

	@Override
	public void moreResults(int hint, Filter filter) {
	}

	}
	}