| /******************************************************************************* |
| * 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.ui.browsing; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.PlatformObject; |
| |
| import org.eclipse.jface.util.Assert; |
| |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragment; |
| |
| /** |
| * Contains a list of package fragments with the same name |
| * but residing in different source folders of a unique Java project. |
| */ |
| public class LogicalPackage extends PlatformObject { |
| |
| private Set fPackages; |
| private String fName; |
| private IJavaProject fJavaProject; |
| |
| public LogicalPackage(IPackageFragment fragment){ |
| Assert.isNotNull(fragment); |
| fPackages= new HashSet(); |
| fJavaProject= fragment.getJavaProject(); |
| Assert.isNotNull(fJavaProject); |
| add(fragment); |
| fName= fragment.getElementName(); |
| } |
| |
| public IJavaProject getJavaProject(){ |
| return fJavaProject; |
| } |
| |
| public IPackageFragment[] getFragments(){ |
| return (IPackageFragment[]) fPackages.toArray(new IPackageFragment[fPackages.size()]); |
| } |
| |
| public void add(IPackageFragment fragment){ |
| Assert.isTrue(fragment != null && fJavaProject.equals(fragment.getJavaProject())); |
| fPackages.add(fragment); |
| } |
| |
| public void remove(IPackageFragment fragment){ |
| fPackages.remove(fragment); |
| } |
| |
| public boolean contains(IPackageFragment fragment){ |
| return fPackages.contains(fragment); |
| } |
| |
| public String getElementName(){ |
| return fName; |
| } |
| |
| public int size(){ |
| return fPackages.size(); |
| } |
| |
| /** |
| * Returns true if the given fragment has the same name and |
| * resides inside the same project as the other fragments in |
| * the LogicalPackage. |
| * |
| * @param fragment |
| * @return boolean |
| */ |
| public boolean belongs(IPackageFragment fragment) { |
| |
| if(fragment==null) |
| return false; |
| |
| if(fJavaProject.equals(fragment.getJavaProject())){ |
| return fName.equals(fragment.getElementName()); |
| } |
| |
| return false; |
| } |
| |
| public boolean equals(Object o){ |
| if (!(o instanceof LogicalPackage)) |
| return false; |
| |
| LogicalPackage lp= (LogicalPackage)o; |
| if (!fJavaProject.equals(lp.getJavaProject())) |
| return false; |
| |
| IPackageFragment[] fragments= lp.getFragments(); |
| |
| if (fragments.length != getFragments().length) |
| return false; |
| |
| //this works because a LogicalPackage cannot contain the same IPackageFragment twice |
| for (int i= 0; i < fragments.length; i++) { |
| IPackageFragment fragment= fragments[i]; |
| if(!fPackages.contains(fragment)) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /* (non-Javadoc) |
| * @see java.lang.Object#hashCode() |
| */ |
| public int hashCode() { |
| IPackageFragment[] fragments= getFragments(); |
| return fJavaProject.hashCode() + getHash(fragments, fragments.length-1); |
| } |
| |
| private int getHash(IPackageFragment[] fragments, int index) { |
| if (index <= 0) |
| return fragments[0].hashCode() * 17; |
| else return fragments[index].hashCode() * 17 + getHash(fragments, index-1); |
| } |
| |
| } |