| /******************************************************************************* |
| * Copyright (c) 2000, 2005 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: |
| * Jesper Kamstrup Linnet (eclipse@kamstrup-linnet.dk) - initial API and implementation |
| * (report 36180: Callers/Callees view) |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.callhierarchy; |
| |
| import org.eclipse.swt.graphics.Image; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.swt.graphics.Rectangle; |
| |
| import org.eclipse.jface.resource.ImageDescriptor; |
| import org.eclipse.jface.viewers.ILabelDecorator; |
| import org.eclipse.jface.viewers.ILabelProviderListener; |
| |
| import org.eclipse.jdt.internal.ui.JavaPlugin; |
| import org.eclipse.jdt.internal.ui.viewsupport.ImageImageDescriptor; |
| |
| import org.eclipse.jdt.internal.corext.callhierarchy.MethodWrapper; |
| |
| /** |
| * LabelDecorator that decorates an method's image with recursion overlays. |
| * The viewer using this decorator is responsible for updating the images on element changes. |
| */ |
| public class CallHierarchyLabelDecorator implements ILabelDecorator { |
| |
| /** |
| * Creates a decorator. The decorator creates an own image registry to cache |
| * images. |
| */ |
| public CallHierarchyLabelDecorator() { |
| // Do nothing |
| } |
| |
| /* (non-Javadoc) |
| * @see ILabelDecorator#decorateText(String, Object) |
| */ |
| public String decorateText(String text, Object element) { |
| return text; |
| } |
| |
| /* (non-Javadoc) |
| * @see ILabelDecorator#decorateImage(Image, Object) |
| */ |
| public Image decorateImage(Image image, Object element) { |
| int adornmentFlags= computeAdornmentFlags(element); |
| if (adornmentFlags != 0) { |
| ImageDescriptor baseImage= new ImageImageDescriptor(image); |
| Rectangle bounds= image.getBounds(); |
| return JavaPlugin.getImageDescriptorRegistry().get(new CallHierarchyImageDescriptor(baseImage, adornmentFlags, new Point(bounds.width, bounds.height))); |
| } |
| return image; |
| } |
| |
| /** |
| * Note: This method is for internal use only. Clients should not call this method. |
| */ |
| private int computeAdornmentFlags(Object element) { |
| int flags= 0; |
| if (element instanceof MethodWrapper) { |
| MethodWrapper methodWrapper= (MethodWrapper) element; |
| if (methodWrapper.isRecursive()) { |
| flags= CallHierarchyImageDescriptor.RECURSIVE; |
| } |
| if (isMaxCallDepthExceeded(methodWrapper)) { |
| flags|= CallHierarchyImageDescriptor.MAX_LEVEL; |
| } |
| } |
| return flags; |
| } |
| |
| private boolean isMaxCallDepthExceeded(MethodWrapper methodWrapper) { |
| return methodWrapper.getLevel() > CallHierarchyUI.getDefault().getMaxCallDepth(); |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#addListener(ILabelProviderListener) |
| */ |
| public void addListener(ILabelProviderListener listener) { |
| // Do nothing |
| } |
| |
| /* (non-Javadoc) |
| * @see IBaseLabelProvider#dispose() |
| */ |
| public void dispose() { |
| // Nothing to dispose |
| } |
| |
| /* (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) { |
| // Do nothing |
| } |
| } |