content: /*******************************************************************************
   * Copyright (c) 2000, 2010 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 ts.eclipse.ide.internal.ui.search;
  
  import org.eclipse.swt.SWT;
  import org.eclipse.swt.custom.StyleRange;
  import org.eclipse.swt.widgets.Display;
  
  import org.eclipse.jface.preference.JFacePreferences;
  import org.eclipse.jface.resource.JFaceResources;
  import org.eclipse.jface.util.IPropertyChangeListener;
  import org.eclipse.jface.util.PropertyChangeEvent;
  import org.eclipse.jface.viewers.ColumnViewer;
  import org.eclipse.jface.viewers.DecoratingStyledCellLabelProvider;
  import org.eclipse.jface.viewers.ILabelProvider;
  import org.eclipse.jface.viewers.StyledString;
  import org.eclipse.jface.viewers.StyledString.Styler;
  import org.eclipse.jface.viewers.ViewerColumn;
  
  import org.eclipse.ui.IWorkbenchPreferenceConstants;
  import org.eclipse.ui.PlatformUI;
  
  
  public class DecoratingTypeScriptSearchLabelProvider extends DecoratingStyledCellLabelProvider implements IPropertyChangeListener, ILabelProvider {
  
  	private static final String HIGHLIGHT_BG_COLOR_NAME= "org.eclipse.search.ui.match.highlight"; //$NON-NLS-1$
  
  	public static final Styler HIGHLIGHT_STYLE= StyledString.createColorRegistryStyler(null, HIGHLIGHT_BG_COLOR_NAME);
  
  	public DecoratingTypeScriptSearchLabelProvider(TypeScriptSearchLabelProvider provider) {
  		super(provider, PlatformUI.getWorkbench().getDecoratorManager().getLabelDecorator(), null);
  	}
  
  	public void initialize(ColumnViewer viewer, ViewerColumn column) {
  		PlatformUI.getPreferenceStore().addPropertyChangeListener(this);
  		JFaceResources.getColorRegistry().addListener(this);
  
  		setOwnerDrawEnabled(showColoredLabels());
  
  		super.initialize(viewer, column);
  	}
  
  	public void dispose() {
  		super.dispose();
  		PlatformUI.getPreferenceStore().removePropertyChangeListener(this);
  		JFaceResources.getColorRegistry().removeListener(this);
  	}
  
  	private void refresh() {
  		ColumnViewer viewer= getViewer();
  
  		if (viewer == null) {
  			return;
  		}
  		boolean showColoredLabels= showColoredLabels();
  		if (showColoredLabels != isOwnerDrawEnabled()) {
  			setOwnerDrawEnabled(showColoredLabels);
  			viewer.refresh();
  		} else if (showColoredLabels) {
  			viewer.refresh();
  		}
  	}
  
  	protected StyleRange prepareStyleRange(StyleRange styleRange, boolean applyColors) {
  		if (!applyColors && styleRange.background != null) {
  			styleRange= super.prepareStyleRange(styleRange, applyColors);
  			styleRange.borderStyle= SWT.BORDER_DOT;
  			return styleRange;
  		}
  		return super.prepareStyleRange(styleRange, applyColors);
  	}
  
  	public static boolean showColoredLabels() {
  		return PlatformUI.getPreferenceStore().getBoolean(IWorkbenchPreferenceConstants.USE_COLORED_LABELS);
  	}
  
  	public void propertyChange(PropertyChangeEvent event) {
  		String property= event.getProperty();
  		if (property.equals(JFacePreferences.QUALIFIER_COLOR) || property.equals(JFacePreferences.COUNTER_COLOR) || property.equals(JFacePreferences.DECORATIONS_COLOR)
  				|| property.equals(HIGHLIGHT_BG_COLOR_NAME) || property.equals(IWorkbenchPreferenceConstants.USE_COLORED_LABELS)) {
  			Display.getDefault().asyncExec(new Runnable() {
  				public void run() {
  					refresh();
  				}
  			});
  		}
  	}
  
  	public String getText(Object element) {
  		return getStyledText(element).getString();
  	}
  
  
  }
  