| /******************************************************************************* |
| * Copyright (c) 2000, 2006 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.viewsupport; |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| |
| import org.eclipse.core.resources.IStorage; |
| |
| import org.eclipse.swt.graphics.Color; |
| import org.eclipse.swt.graphics.Image; |
| |
| import org.eclipse.jface.util.SafeRunnable; |
| import org.eclipse.jface.viewers.IColorProvider; |
| import org.eclipse.jface.viewers.ILabelDecorator; |
| import org.eclipse.jface.viewers.ILabelProvider; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| import org.eclipse.jface.viewers.LabelProviderChangedEvent; |
| |
| import org.eclipse.jdt.ui.JavaElementLabels; |
| |
| public class JavaUILabelProvider implements ILabelProvider, IColorProvider { |
| |
| protected ListenerList fListeners = new ListenerList(); |
| |
| protected JavaElementImageProvider fImageLabelProvider; |
| protected StorageLabelProvider fStorageLabelProvider; |
| |
| private ArrayList fLabelDecorators; |
| |
| private int fImageFlags; |
| private long fTextFlags; |
| |
| /** |
| * Creates a new label provider with default flags. |
| */ |
| public JavaUILabelProvider() { |
| this(JavaElementLabels.ALL_DEFAULT, JavaElementImageProvider.OVERLAY_ICONS); |
| } |
| |
| /** |
| * @param textFlags Flags defined in <code>JavaElementLabels</code>. |
| * @param imageFlags Flags defined in <code>JavaElementImageProvider</code>. |
| */ |
| public JavaUILabelProvider(long textFlags, int imageFlags) { |
| fImageLabelProvider= new JavaElementImageProvider(); |
| fLabelDecorators= null; |
| |
| fStorageLabelProvider= new StorageLabelProvider(); |
| fImageFlags= imageFlags; |
| fTextFlags= textFlags; |
| } |
| |
| /** |
| * Adds a decorator to the label provider |
| */ |
| public void addLabelDecorator(ILabelDecorator decorator) { |
| if (fLabelDecorators == null) { |
| fLabelDecorators= new ArrayList(2); |
| } |
| fLabelDecorators.add(decorator); |
| } |
| |
| /** |
| * Sets the textFlags. |
| * @param textFlags The textFlags to set |
| */ |
| public final void setTextFlags(long textFlags) { |
| fTextFlags= textFlags; |
| } |
| |
| /** |
| * Sets the imageFlags |
| * @param imageFlags The imageFlags to set |
| */ |
| public final void setImageFlags(int imageFlags) { |
| fImageFlags= imageFlags; |
| } |
| |
| /** |
| * Gets the image flags. |
| * Can be overwritten by super classes. |
| * @return Returns a int |
| */ |
| public final int getImageFlags() { |
| return fImageFlags; |
| } |
| |
| /** |
| * Gets the text flags. |
| * @return Returns a int |
| */ |
| public final long getTextFlags() { |
| return fTextFlags; |
| } |
| |
| /** |
| * Evaluates the image flags for a element. |
| * Can be overwritten by super classes. |
| * @return Returns a int |
| */ |
| protected int evaluateImageFlags(Object element) { |
| return getImageFlags(); |
| } |
| |
| /** |
| * Evaluates the text flags for a element. Can be overwritten by super classes. |
| * @return Returns a int |
| */ |
| protected long evaluateTextFlags(Object element) { |
| return getTextFlags(); |
| } |
| |
| protected Image decorateImage(Image image, Object element) { |
| if (fLabelDecorators != null && image != null) { |
| for (int i= 0; i < fLabelDecorators.size(); i++) { |
| ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i); |
| image= decorator.decorateImage(image, element); |
| } |
| } |
| return image; |
| } |
| |
| /* (non-Javadoc) |
| * @see ILabelProvider#getImage |
| */ |
| public Image getImage(Object element) { |
| Image result= fImageLabelProvider.getImageLabel(element, evaluateImageFlags(element)); |
| if (result == null && (element instanceof IStorage)) { |
| result= fStorageLabelProvider.getImage(element); |
| } |
| |
| return decorateImage(result, element); |
| } |
| |
| protected String decorateText(String text, Object element) { |
| if (fLabelDecorators != null && text.length() > 0) { |
| for (int i= 0; i < fLabelDecorators.size(); i++) { |
| ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i); |
| text= decorator.decorateText(text, element); |
| } |
| } |
| return text; |
| } |
| |
| |
| /* (non-Javadoc) |
| * @see ILabelProvider#getText |
| */ |
| public String getText(Object element) { |
| String result= JavaElementLabels.getTextLabel(element, evaluateTextFlags(element)); |
| if (result.length() == 0 && (element instanceof IStorage)) { |
| result= fStorageLabelProvider.getText(element); |
| } |
| |
| return decorateText(result, element); |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#dispose |
| */ |
| public void dispose() { |
| if (fLabelDecorators != null) { |
| for (int i= 0; i < fLabelDecorators.size(); i++) { |
| ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i); |
| decorator.dispose(); |
| } |
| fLabelDecorators= null; |
| } |
| fStorageLabelProvider.dispose(); |
| fImageLabelProvider.dispose(); |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#addListener(ILabelProviderListener) |
| */ |
| public void addListener(ILabelProviderListener listener) { |
| if (fLabelDecorators != null) { |
| for (int i= 0; i < fLabelDecorators.size(); i++) { |
| ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i); |
| decorator.addListener(listener); |
| } |
| } |
| fListeners.add(listener); |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#isLabelProperty(Object, String) |
| */ |
| public boolean isLabelProperty(Object element, String property) { |
| return true; |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#removeListener(ILabelProviderListener) |
| */ |
| public void removeListener(ILabelProviderListener listener) { |
| if (fLabelDecorators != null) { |
| for (int i= 0; i < fLabelDecorators.size(); i++) { |
| ILabelDecorator decorator= (ILabelDecorator) fLabelDecorators.get(i); |
| decorator.removeListener(listener); |
| } |
| } |
| fListeners.remove(listener); |
| } |
| |
| public static ILabelDecorator[] getDecorators(boolean errortick, ILabelDecorator extra) { |
| if (errortick) { |
| if (extra == null) { |
| return new ILabelDecorator[] {}; |
| } else { |
| return new ILabelDecorator[] { extra }; |
| } |
| } |
| if (extra != null) { |
| return new ILabelDecorator[] { extra }; |
| } |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object) |
| */ |
| public Color getForeground(Object element) { |
| return null; |
| } |
| |
| /* (non-Javadoc) |
| * @see org.eclipse.jface.viewers.IColorProvider#getBackground(java.lang.Object) |
| */ |
| public Color getBackground(Object element) { |
| return null; |
| } |
| |
| /** |
| * Fires a label provider changed event to all registered listeners |
| * Only listeners registered at the time this method is called are notified. |
| * |
| * @param event a label provider changed event |
| * |
| * @see ILabelProviderListener#labelProviderChanged |
| */ |
| protected void fireLabelProviderChanged(final LabelProviderChangedEvent event) { |
| Object[] listeners = fListeners.getListeners(); |
| for (int i = 0; i < listeners.length; ++i) { |
| final ILabelProviderListener l = (ILabelProviderListener) listeners[i]; |
| SafeRunner.run(new SafeRunnable() { |
| public void run() { |
| l.labelProviderChanged(event); |
| } |
| }); |
| } |
| } |
| |
| } |