/*******************************************************************************
* Copyright (c) 2000, 2009 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.wst.jsdt.internal.ui.typehierarchy;
import org.eclipse.jface.resource.CompositeImageDescriptor;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.graphics.ImageData;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.widgets.Display;
import org.eclipse.wst.jsdt.core.Flags;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IFunction;
import org.eclipse.wst.jsdt.core.IType;
import org.eclipse.wst.jsdt.core.ITypeHierarchy;
import org.eclipse.wst.jsdt.internal.ui.JavaScriptPlugin;
import org.eclipse.wst.jsdt.internal.ui.JavaPluginImages;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.ColoredViewersManager;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.JavaElementImageProvider;
import org.eclipse.wst.jsdt.ui.JavaScriptElementImageDescriptor;
import org.eclipse.wst.jsdt.ui.JavaScriptElementLabels;
/**
* Label provider for the hierarchy viewers. Types in the hierarchy that are not belonging to the
* input scope are rendered differently.
*/
public class HierarchyLabelProvider extends AppearanceAwareLabelProvider {
private static class FocusDescriptor extends CompositeImageDescriptor {
private ImageDescriptor fBase;
public FocusDescriptor(ImageDescriptor base) {
fBase= base;
}
protected void drawCompositeImage(int width, int height) {
drawImage(getImageData(fBase), 0, 0);
drawImage(getImageData(JavaPluginImages.DESC_OVR_FOCUS), 0, 0);
}
private ImageData getImageData(ImageDescriptor descriptor) {
ImageData data= descriptor.getImageData(); // see bug 51965: getImageData can return null
if (data == null) {
data= DEFAULT_IMAGE_DATA;
JavaScriptPlugin.logErrorMessage("Image data not available: " + descriptor.toString()); //$NON-NLS-1$
}
return data;
}
protected Point getSize() {
return JavaElementImageProvider.BIG_SIZE;
}
public int hashCode() {
return fBase.hashCode();
}
public boolean equals(Object object) {
return object != null && FocusDescriptor.class.equals(object.getClass()) && ((FocusDescriptor)object).fBase.equals(fBase);
}
}
private Color fSpecialColor;
private ViewerFilter fFilter;
private TypeHierarchyLifeCycle fHierarchy;
public HierarchyLabelProvider(TypeHierarchyLifeCycle lifeCycle) {
super(DEFAULT_TEXTFLAGS | JavaScriptElementLabels.USE_RESOLVED, DEFAULT_IMAGEFLAGS);
fHierarchy= lifeCycle;
fFilter= null;
}
/**
* @return Returns the filter.
*/
public ViewerFilter getFilter() {
return fFilter;
}
/**
* @param filter The filter to set.
*/
public void setFilter(ViewerFilter filter) {
fFilter= filter;
}
protected boolean isDifferentScope(IType type) {
if (fFilter != null && !fFilter.select(null, null, type)) {
return true;
}
IJavaScriptElement input= fHierarchy.getInputElement();
if (input == null || input.getElementType() == IJavaScriptElement.TYPE) {
return false;
}
IJavaScriptElement parent= type.getAncestor(input.getElementType());
if (input.getElementType() == IJavaScriptElement.PACKAGE_FRAGMENT) {
if (parent == null || parent.getElementName().equals(input.getElementName())) {
return false;
}
} else if (input.equals(parent)) {
return false;
}
return true;
}
/* (non-Javadoc)
* @see ILabelProvider#getImage
*/
public Image getImage(Object element) {
Image result= null;
if (element instanceof IType) {
ImageDescriptor desc= getTypeImageDescriptor((IType) element);
if (desc != null) {
if (element.equals(fHierarchy.getInputElement())) {
desc= new FocusDescriptor(desc);
}
result= JavaScriptPlugin.getImageDescriptorRegistry().get(desc);
}
} else {
result= fImageLabelProvider.getImageLabel(element, evaluateImageFlags(element));
}
return decorateImage(result, element);
}
private ImageDescriptor getTypeImageDescriptor(IType type) {
ITypeHierarchy hierarchy= fHierarchy.getHierarchy();
if (hierarchy == null) {
return new JavaScriptElementImageDescriptor(JavaPluginImages.DESC_OBJS_CLASS, 0, JavaElementImageProvider.BIG_SIZE);
}
int flags= hierarchy.getCachedFlags(type);
if (flags == -1) {
return new JavaScriptElementImageDescriptor(JavaPluginImages.DESC_OBJS_CLASS, 0, JavaElementImageProvider.BIG_SIZE);
}
boolean isInner= (type.getDeclaringType() != null);
ImageDescriptor desc= JavaElementImageProvider.getTypeImageDescriptor(isInner, false, flags, isDifferentScope(type));
int adornmentFlags= 0;
if (Flags.isAbstract(flags)) {
adornmentFlags |= JavaScriptElementImageDescriptor.ABSTRACT;
}
if (Flags.isStatic(flags)) {
adornmentFlags |= JavaScriptElementImageDescriptor.STATIC;
}
return new JavaScriptElementImageDescriptor(desc, adornmentFlags, JavaElementImageProvider.BIG_SIZE);
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object)
*/
public Color getForeground(Object element) {
if (element instanceof IFunction) {
if (fSpecialColor == null) {
fSpecialColor= Display.getCurrent().getSystemColor(SWT.COLOR_DARK_BLUE);
}
return fSpecialColor;
} else if (element instanceof IType && isDifferentScope((IType) element)) {
return JFaceResources.getColorRegistry().get(ColoredViewersManager.QUALIFIER_COLOR_NAME);
}
return null;
}
}