| /******************************************************************************* |
| * Copyright (c) 2013 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.ui.ide; |
| |
| import org.eclipse.core.resources.IFile; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.mapping.ResourceMapping; |
| import org.eclipse.core.resources.mapping.ResourceMappingContext; |
| import org.eclipse.core.resources.mapping.ResourceTraversal; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.osgi.util.NLS; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.ISaveableFilter; |
| import org.eclipse.ui.IWorkbenchPart; |
| import org.eclipse.ui.Saveable; |
| import org.eclipse.ui.internal.ide.IDEWorkbenchPlugin; |
| |
| |
| /** |
| * A saveable filter where the given savable must either match one of the given roots or be a direct |
| * or indirect child of one of the roots. |
| * |
| * @since 3.9 |
| * |
| */ |
| public class ResourceSaveableFilter implements ISaveableFilter { |
| |
| private final IResource[] roots; |
| |
| /** |
| * Creates a new filter. |
| * |
| * @param roots the save roots |
| */ |
| public ResourceSaveableFilter(IResource[] roots) { |
| this.roots = roots; |
| } |
| |
| @Override |
| public boolean select(Saveable saveable, IWorkbenchPart[] containingParts) { |
| if (isDescendantOfRoots(saveable)) { |
| return true; |
| } |
| // For backwards compatibility, we need to check the parts |
| for (int i = 0; i < containingParts.length; i++) { |
| IWorkbenchPart workbenchPart = containingParts[i]; |
| if (workbenchPart instanceof IEditorPart) { |
| IEditorPart editorPart = (IEditorPart) workbenchPart; |
| if (isEditingDescendantOf(editorPart)) { |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Return whether the given saveable contains any resources that are descendants of the root |
| * resources. |
| * |
| * @param saveable the saveable |
| * @return whether the given saveable contains any resources that are descendants of the root |
| * resources |
| */ |
| private boolean isDescendantOfRoots(Saveable saveable) { |
| // First, try and adapt the saveable to a resource mapping. |
| ResourceMapping mapping = ResourceUtil.getResourceMapping(saveable); |
| if (mapping != null) { |
| try { |
| ResourceTraversal[] traversals = mapping.getTraversals( |
| ResourceMappingContext.LOCAL_CONTEXT, null); |
| for (int i = 0; i < traversals.length; i++) { |
| ResourceTraversal traversal = traversals[i]; |
| IResource[] resources = traversal.getResources(); |
| for (int j = 0; j < resources.length; j++) { |
| IResource resource = resources[j]; |
| if (isDescendantOfRoots(resource)) { |
| return true; |
| } |
| } |
| } |
| } catch (CoreException e) { |
| IDEWorkbenchPlugin |
| .log( |
| NLS |
| .bind( |
| "An internal error occurred while determining the resources for {0}", saveable.getName()), e); //$NON-NLS-1$ |
| } |
| } else { |
| // If there is no mapping, try to adapt to a resource or file directly |
| IFile file = ResourceUtil.getFile(saveable); |
| if (file != null) { |
| return isDescendantOfRoots(file); |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Return whether the given resource is either equal to or a descendant of one of the given |
| * roots. |
| * |
| * @param resource the resource to be tested |
| * @return whether the given resource is either equal to or a descendant of one of the given |
| * roots |
| */ |
| private boolean isDescendantOfRoots(IResource resource) { |
| for (int l = 0; l < roots.length; l++) { |
| IResource root = roots[l]; |
| if (root.getFullPath().isPrefixOf(resource.getFullPath())) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Return whether the given dirty editor part is editing resources that are |
| * descendants of the given roots. |
| * |
| * @param part the dirty editor part |
| * @return whether the given dirty editor part is editing resources that are |
| * descendants of the given roots |
| */ |
| private boolean isEditingDescendantOf(IEditorPart part) { |
| IFile file = ResourceUtil.getFile(part.getEditorInput()); |
| if (file != null) { |
| return isDescendantOfRoots(file); |
| } |
| return false; |
| } |
| |
| } |