/*******************************************************************************
* Copyright (c) 2000, 2008 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.JFaceResources;
import org.eclipse.jface.util.IPropertyChangeListener;
import org.eclipse.jface.util.PropertyChangeEvent;
import org.eclipse.jface.viewers.LabelProviderChangedEvent;
import org.eclipse.swt.graphics.Color;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IMember;
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.core.JavaScriptModelException;
import org.eclipse.wst.jsdt.internal.corext.util.MethodOverrideTester;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.AppearanceAwareLabelProvider;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.ColoredString;
import org.eclipse.wst.jsdt.internal.ui.viewsupport.ColoredViewersManager;
import org.eclipse.wst.jsdt.ui.JavaScriptElementLabels;
/**
* Label provider for the hierarchy method viewers.
*/
public class MethodsLabelProvider extends AppearanceAwareLabelProvider {
private boolean fShowDefiningType;
private TypeHierarchyLifeCycle fHierarchy;
private MethodsViewer fMethodsViewer;
private IPropertyChangeListener fColorRegistryListener;
public MethodsLabelProvider(TypeHierarchyLifeCycle lifeCycle, MethodsViewer methodsViewer) {
super(DEFAULT_TEXTFLAGS, DEFAULT_IMAGEFLAGS);
fHierarchy= lifeCycle;
fShowDefiningType= false;
fMethodsViewer= methodsViewer;
fColorRegistryListener= new IPropertyChangeListener() {
public void propertyChange(PropertyChangeEvent event) {
if (event.getProperty().equals(ColoredViewersManager.INHERITED_COLOR_NAME)) {
fireLabelProviderChanged(new LabelProviderChangedEvent(MethodsLabelProvider.this, null));
}
}
};
JFaceResources.getColorRegistry().addListener(fColorRegistryListener);
}
public void setShowDefiningType(boolean showDefiningType) {
fShowDefiningType= showDefiningType;
}
public boolean isShowDefiningType() {
return fShowDefiningType;
}
private IType getDefiningType(Object element) throws JavaScriptModelException {
int kind= ((IJavaScriptElement) element).getElementType();
if (kind != IJavaScriptElement.METHOD && kind != IJavaScriptElement.FIELD && kind != IJavaScriptElement.INITIALIZER) {
return null;
}
IType declaringType= ((IMember) element).getDeclaringType();
if (kind != IJavaScriptElement.METHOD) {
return declaringType;
}
ITypeHierarchy hierarchy= fHierarchy.getHierarchy();
if (hierarchy == null) {
return declaringType;
}
IFunction method= (IFunction) element;
MethodOverrideTester tester= new MethodOverrideTester(declaringType, hierarchy);
IFunction res= tester.findDeclaringMethod(method, true);
if (res == null || method.equals(res)) {
return declaringType;
}
return res.getDeclaringType();
}
/* (non-Javadoc)
* @see ILabelProvider#getText
*/
public String getText(Object element) {
String text= super.getText(element);
String qualifier= getQualifier(element);
if (qualifier != null) {
return qualifier + text;
}
return text;
}
/* (non-Javadoc)
* @see org.eclipse.wst.jsdt.internal.ui.viewsupport.JavaUILabelProvider#getRichTextLabel(java.lang.Object)
*/
public ColoredString getRichTextLabel(Object element) {
ColoredString text= super.getRichTextLabel(element);
String qualifier= getQualifier(element);
if (qualifier != null) {
return new ColoredString(qualifier).append(text);
}
return text;
}
private String getQualifier(Object element) {
if (fShowDefiningType) {
try {
IType type= getDefiningType(element);
if (type != null) {
return super.getText(type) + JavaScriptElementLabels.CONCAT_STRING;
}
} catch (JavaScriptModelException e) {
}
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object)
*/
public Color getForeground(Object element) {
if (fMethodsViewer.isShowInheritedMethods() && element instanceof IFunction) {
IFunction curr= (IFunction) element;
IMember declaringType= curr.getDeclaringType();
if (declaringType==null || !declaringType.equals(fMethodsViewer.getInput())) {
return JFaceResources.getColorRegistry().get(ColoredViewersManager.INHERITED_COLOR_NAME);
}
}
return null;
}
public void dispose() {
JFaceResources.getColorRegistry().removeListener(fColorRegistryListener);
fColorRegistryListener= null;
super.dispose();
}
}