| /******************************************************************************* |
| * Copyright (c) 2000, 2011 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; |
| |
| import java.util.ArrayList; |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Path; |
| |
| import org.eclipse.ui.IElementFactory; |
| import org.eclipse.ui.IMemento; |
| |
| import org.eclipse.jdt.core.IJarEntryResource; |
| import org.eclipse.jdt.core.IJavaElement; |
| import org.eclipse.jdt.core.IJavaProject; |
| import org.eclipse.jdt.core.IPackageFragment; |
| import org.eclipse.jdt.core.IPackageFragmentRoot; |
| import org.eclipse.jdt.core.JavaCore; |
| import org.eclipse.jdt.core.JavaModelException; |
| |
| import org.eclipse.jdt.internal.ui.javaeditor.JarEntryEditorInput; |
| |
| /** |
| * The JarEntryEditorInputFactory is used to save and recreate {@link JarEntryEditorInput}s. |
| * |
| * @see IMemento |
| * @see IElementFactory |
| */ |
| public class JarEntryEditorInputFactory implements IElementFactory { |
| |
| public static final String FACTORY_ID= "org.eclipse.jdt.ui.internal.JarEntryEditorInputFactory"; //$NON-NLS-1$ |
| private static final String KEY_ELEMENT= "element"; //$NON-NLS-1$ |
| private static final String KEY_PATH= "path"; //$NON-NLS-1$ |
| |
| /** |
| * Public constructor for extension point. |
| */ |
| public JarEntryEditorInputFactory() { |
| } |
| |
| /* |
| * @see org.eclipse.ui.IElementFactory#createElement(org.eclipse.ui.IMemento) |
| */ |
| @Override |
| public IAdaptable createElement(IMemento memento) { |
| |
| String rootIdentifier= memento.getString(KEY_ELEMENT); |
| String pathIdentifier= memento.getString(KEY_PATH); |
| if (rootIdentifier != null && pathIdentifier != null) { |
| IJavaElement restoredParent= JavaCore.create(rootIdentifier); |
| try { |
| Object[] children; |
| if (restoredParent instanceof IPackageFragmentRoot) { |
| IPackageFragmentRoot restoredRoot= (IPackageFragmentRoot) restoredParent; |
| if (!restoredParent.exists()) { |
| restoredRoot= fuzzyResolveRoot(restoredRoot); |
| if (restoredRoot == null) { |
| return null; |
| } |
| } |
| children= restoredRoot.getNonJavaResources(); |
| |
| } else if (restoredParent instanceof IPackageFragment) { |
| IPackageFragment restoredPackage= (IPackageFragment) restoredParent; |
| if (!restoredPackage.exists()) { |
| IPackageFragmentRoot restoredRoot= (IPackageFragmentRoot) restoredPackage.getParent(); |
| restoredRoot= fuzzyResolveRoot(restoredRoot); |
| if (restoredRoot == null) { |
| return null; |
| } |
| restoredPackage= restoredRoot.getPackageFragment(restoredPackage.getElementName()); |
| if (!restoredPackage.exists()) { |
| return null; |
| } |
| } |
| children= restoredPackage.getNonJavaResources(); |
| } else { |
| return null; // should not happen |
| } |
| |
| String[] pathSegments= new Path(pathIdentifier).segments(); |
| return createEditorInput(pathSegments, children); |
| } catch (JavaModelException e) { |
| return null; |
| } |
| } |
| return null; |
| } |
| |
| private IPackageFragmentRoot fuzzyResolveRoot(IPackageFragmentRoot restoredRoot) throws JavaModelException { |
| IJavaProject project= restoredRoot.getJavaProject(); |
| String rootName= restoredRoot.getElementName(); |
| int versionSepIndex= rootName.indexOf('_'); |
| if (versionSepIndex > 0) { |
| // try stripping plug-in version number |
| String prefix= rootName.substring(0, versionSepIndex); |
| IPackageFragmentRoot[] roots= project.getPackageFragmentRoots(); |
| for (int i= 0; i < roots.length; i++) { |
| if (roots[i].getElementName().startsWith(prefix)) { |
| return roots[i]; |
| } |
| } |
| } |
| return null; |
| } |
| |
| private JarEntryEditorInput createEditorInput(String[] pathSegments, Object[] children) { |
| int depth= pathSegments.length; |
| segments: for (int i= 0; i < depth; i++) { |
| String name= pathSegments[i]; |
| for (int j= 0; j < children.length; j++) { |
| Object child= children[j]; |
| if (child instanceof IJarEntryResource) { |
| IJarEntryResource jarEntryResource= (IJarEntryResource) child; |
| if (name.equals(jarEntryResource.getName())) { |
| boolean isFile= jarEntryResource.isFile(); |
| if (isFile) { |
| if (i == depth - 1) { |
| return new JarEntryEditorInput(jarEntryResource); |
| } else { |
| return null; // got a file for a directory name |
| } |
| } else { |
| children= jarEntryResource.getChildren(); |
| continue segments; |
| } |
| } |
| } |
| } |
| return null; // no child found on this level |
| } |
| return null; |
| } |
| |
| /* |
| * @see IPersistableElement#saveState(IMemento) |
| */ |
| public static void saveState(IMemento memento, IJarEntryResource jarEntryResource) { |
| ArrayList<String> reversePath= new ArrayList<>(); |
| reversePath.add(jarEntryResource.getName()); |
| |
| Object parent= jarEntryResource.getParent(); |
| while (parent instanceof IJarEntryResource) { |
| jarEntryResource= (IJarEntryResource) parent; |
| reversePath.add(jarEntryResource.getName()); |
| parent= jarEntryResource.getParent(); |
| } |
| if (parent instanceof IPackageFragmentRoot || parent instanceof IPackageFragment) { |
| memento.putString(KEY_ELEMENT, ((IJavaElement) parent).getHandleIdentifier()); |
| IPath path= new Path(reversePath.get(reversePath.size() - 1)); |
| for (int i= reversePath.size() - 2; i >= 0; i--) { |
| path= path.append(reversePath.get(i)); |
| } |
| memento.putString(KEY_PATH, path.toString()); |
| } |
| } |
| } |