/*******************************************************************************
* Copyright (c) 2000, 2012 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.packageview;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.eclipse.core.resources.IFolder;
import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.resource.ImageDescriptor;
import org.eclipse.swt.graphics.Image;
import org.eclipse.ui.IWorkingSet;
import org.eclipse.wst.jsdt.core.IClassFile;
import org.eclipse.wst.jsdt.core.IJavaScriptElement;
import org.eclipse.wst.jsdt.core.IJavaScriptUnit;
import org.eclipse.wst.jsdt.core.IPackageFragment;
import org.eclipse.wst.jsdt.internal.ui.navigator.ContainerFolder;
import org.eclipse.wst.jsdt.internal.ui.navigator.deferred.LoadingModelNode;
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.JavaElementImageProvider;
import org.eclipse.wst.jsdt.ui.JavaScriptElementLabels;
/**
* Provides the labels for the Package Explorer.
* <p>
* It provides labels for the packages in hierarchical layout and in all
* other cases delegates it to its super class.
* </p>
*
*/
public class PackageExplorerLabelProvider extends AppearanceAwareLabelProvider {
private PackageExplorerContentProvider fContentProvider;
private Map fWorkingSetImages;
private boolean fIsFlatLayout;
private PackageExplorerProblemsDecorator fProblemDecorator;
public PackageExplorerLabelProvider(PackageExplorerContentProvider cp) {
super(DEFAULT_TEXTFLAGS | JavaScriptElementLabels.P_COMPRESSED | JavaScriptElementLabels.ALL_CATEGORY, DEFAULT_IMAGEFLAGS | JavaElementImageProvider.SMALL_ICONS);
fProblemDecorator= new PackageExplorerProblemsDecorator();
addLabelDecorator(fProblemDecorator);
Assert.isNotNull(cp);
fContentProvider= cp;
fWorkingSetImages= null;
}
/* (non-Javadoc)
* @see org.eclipse.wst.jsdt.internal.ui.viewsupport.JavaUILabelProvider#getRichTextLabel(java.lang.Object)
*/
public ColoredString getRichTextLabel(Object element) {
String text= getSpecificText(element);
if (text != null) {
return new ColoredString(decorateText(text, element));
}
return super.getRichTextLabel(element);
}
private String getSpecificText(Object element) {
if (!fIsFlatLayout && element instanceof IPackageFragment) {
IPackageFragment fragment = (IPackageFragment) element;
Object parent= fContentProvider.getHierarchicalPackageParent(fragment);
if (parent instanceof IPackageFragment) {
return getNameDelta((IPackageFragment) parent, fragment);
} else if (parent instanceof IFolder) { // bug 152735
return getNameDelta((IFolder) parent, fragment);
}
} else if (element instanceof IWorkingSet) {
return ((IWorkingSet) element).getLabel();
}
return null;
}
public String getText(Object element) {
if(element instanceof ContainerFolder) {
return ((ContainerFolder)element).toString();
} else if (element instanceof LoadingModelNode) {
return ((LoadingModelNode)element).getText();
}
String text= getSpecificText(element);
if (text != null) {
return decorateText(text, element);
}
text = super.getText(element);
if (!isFlatLayout() && element instanceof IJavaScriptElement) {
switch (((IJavaScriptElement) element).getElementType()) {
case IJavaScriptElement.TYPE :
case IJavaScriptElement.METHOD :
case IJavaScriptElement.FIELD :
case IJavaScriptElement.LOCAL_VARIABLE :
case IJavaScriptElement.INITIALIZER : {
int groupEnd = text.lastIndexOf('.');
if (groupEnd > 0 && groupEnd < text.length() - 1) {
text = text.substring(groupEnd + 1);
}
return text;
}
}
}
if(element instanceof IClassFile) {
// text = ((IClassFile)element).getPath().lastSegment();
}else if (element instanceof IJavaScriptUnit) {
text = ((IJavaScriptUnit)element).getPath().lastSegment();
}
return text;
}
private String getNameDelta(IPackageFragment parent, IPackageFragment fragment) {
String prefix= parent.getElementName() + '/';
String fullName= fragment.getElementName();
if (fullName.startsWith(prefix)) {
return fullName.substring(prefix.length());
}
return fullName;
}
public boolean isFlatLayout() {
return fIsFlatLayout;
}
private String getNameDelta(IFolder parent, IPackageFragment fragment) {
IPath prefix= parent.getFullPath();
IPath fullPath= fragment.getPath();
if (prefix.isPrefixOf(fullPath)) {
StringBuffer buf= new StringBuffer();
for (int i= prefix.segmentCount(); i < fullPath.segmentCount(); i++) {
if (buf.length() > 0)
buf.append('.');
buf.append(fullPath.segment(i));
}
return buf.toString();
}
return fragment.getElementName();
}
public Image getImage(Object element) {
if(element instanceof ContainerFolder) {
return super.getImage(((ContainerFolder)element).getParentObject());
} else if (element instanceof LoadingModelNode) {
return ((LoadingModelNode)element).getImage();
}
if (element instanceof IWorkingSet) {
ImageDescriptor image= ((IWorkingSet)element).getImageDescriptor();
if (fWorkingSetImages == null) {
fWorkingSetImages= new HashMap();
}
Image result= (Image) fWorkingSetImages.get(image);
if (result == null) {
result= image.createImage();
fWorkingSetImages.put(image, result);
}
return decorateImage(result, element);
}
return super.getImage(element);
}
public void setIsFlatLayout(boolean state) {
fIsFlatLayout= state;
fProblemDecorator.setIsFlatLayout(state);
}
public void dispose() {
if (fWorkingSetImages != null) {
for (Iterator iter= fWorkingSetImages.values().iterator(); iter.hasNext();) {
((Image)iter.next()).dispose();
}
}
super.dispose();
}
}