| /******************************************************************************* |
| * 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.packageview; |
| |
| import org.eclipse.core.resources.IFolder; |
| |
| import org.eclipse.jface.util.Assert; |
| |
| import org.eclipse.jdt.core.IPackageFragment; |
| |
| import org.eclipse.jdt.internal.ui.viewsupport.AppearanceAwareLabelProvider; |
| |
| /** |
| * 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> |
| * @since 2.1 |
| */ |
| public class PackageExplorerLabelProvider extends AppearanceAwareLabelProvider { |
| |
| private PackageExplorerContentProvider fContentProvider; |
| |
| private boolean fIsFlatLayout; |
| private PackageExplorerProblemsDecorator fProblemDecorator; |
| |
| public PackageExplorerLabelProvider(long textFlags, int imageFlags, PackageExplorerContentProvider cp) { |
| super(textFlags, imageFlags); |
| fProblemDecorator= new PackageExplorerProblemsDecorator(); |
| addLabelDecorator(fProblemDecorator); |
| Assert.isNotNull(cp); |
| fContentProvider= cp; |
| } |
| |
| |
| public String getText(Object element) { |
| |
| if (fIsFlatLayout || !(element instanceof IPackageFragment)) |
| return super.getText(element); |
| |
| IPackageFragment fragment = (IPackageFragment) element; |
| |
| if (fragment.isDefaultPackage()) { |
| return super.getText(fragment); |
| } else { |
| Object parent= fContentProvider.getPackageFragmentProvider().getParent(fragment); |
| if (parent instanceof IPackageFragment) { |
| return getNameDelta((IPackageFragment) parent, fragment); |
| } else if (parent instanceof IFolder) { |
| int prefixLength= getPrefixLength((IFolder) parent); |
| return fragment.getElementName().substring(prefixLength); |
| } |
| else return super.getText(fragment); |
| } |
| } |
| |
| private int getPrefixLength(IFolder folder) { |
| Object parent= fContentProvider.getParent(folder); |
| int folderNameLenght= folder.getName().length() + 1; |
| if(parent instanceof IPackageFragment) { |
| String fragmentName= ((IPackageFragment)parent).getElementName(); |
| return fragmentName.length() + 1 + folderNameLenght; |
| } else if (parent instanceof IFolder) { |
| return getPrefixLength((IFolder)parent) + folderNameLenght; |
| } else { |
| return folderNameLenght; |
| } |
| } |
| |
| private String getNameDelta(IPackageFragment topFragment, IPackageFragment bottomFragment) { |
| |
| String topName= topFragment.getElementName(); |
| String bottomName= bottomFragment.getElementName(); |
| |
| if(topName.equals(bottomName)) |
| return topName; |
| |
| String deltaname= bottomName.substring(topName.length()+1); |
| return deltaname; |
| } |
| |
| public void setIsFlatLayout(boolean state) { |
| fIsFlatLayout= state; |
| fProblemDecorator.setIsFlatLayout(state); |
| } |
| } |