| /******************************************************************************* |
| * Copyright (c) 2003, 2004 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.common.modulecore.internal.impl; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import org.eclipse.core.resources.IContainer; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.Path; |
| import org.eclipse.wst.common.modulecore.ModuleCore; |
| import org.eclipse.wst.common.modulecore.ComponentResource; |
| import org.eclipse.wst.common.modulecore.internal.util.IPathProvider; |
| |
| /** |
| * <p> |
| * The following class is experimental until fully documented. |
| * </p> |
| */ |
| public class ResourceTreeNode { |
| |
| private Set moduleResources = new HashSet(); |
| private String pathSegment; |
| private final Map children = new HashMap(); |
| private static final ComponentResource[] NO_MODULE_RESOURCES = new ComponentResource[]{}; |
| private IPathProvider pathProvider; |
| private ResourceTreeNode parent; |
| |
| public ResourceTreeNode(String aPathSegment, ResourceTreeNode parent, IPathProvider aPathProvider) { |
| pathSegment = aPathSegment; |
| pathProvider = aPathProvider; |
| } |
| |
| public ResourceTreeNode addChild(ResourceTreeNode aChild) { |
| children.put(aChild.getPathSegment(), aChild); |
| return aChild; |
| } |
| |
| public ResourceTreeNode addChild(ComponentResource aModuleResource) { |
| IPath moduleResourcePath = new Path(getPathProvider().getPath(aModuleResource).toString()); |
| ResourceTreeNode newChild = findChild(moduleResourcePath, true); |
| newChild.addModuleResource(aModuleResource); |
| return newChild; |
| } |
| |
| public ResourceTreeNode removeChild(ResourceTreeNode aChild) { |
| return (ResourceTreeNode) children.remove(aChild.getPathSegment()); |
| } |
| |
| public ResourceTreeNode removeChild(ComponentResource aModuleResource) { |
| IPath moduleResourcePath = new Path(getPathProvider().getPath(aModuleResource).toString()); |
| ResourceTreeNode removedChild = findChild(moduleResourcePath, false); |
| return removeChild(removedChild); |
| } |
| |
| public ResourceTreeNode findChild(IPath aPath) { |
| return findChild(aPath, true); |
| } |
| |
| public ResourceTreeNode findChild(IPath aPath, boolean toCreateChildIfNecessary) { |
| ResourceTreeNode child = this; |
| if (aPath.segmentCount() > 0) { |
| child = findChild(aPath.segment(0), toCreateChildIfNecessary); |
| if (child == null) |
| return null; |
| if(aPath.segmentCount() == 1) |
| return child; |
| child = child.findChild(aPath.removeFirstSegments(1), toCreateChildIfNecessary); |
| |
| } |
| return child; |
| } |
| |
| public ResourceTreeNode findChild(String aPathSegment) { |
| if(aPathSegment == null || aPathSegment.length() == 0) |
| return this; |
| return findChild(aPathSegment, false); |
| } |
| |
| public ResourceTreeNode findChild(String aPathSegment, boolean toCreateChildIfNecessary) { |
| ResourceTreeNode childNode = (ResourceTreeNode) children.get(aPathSegment); |
| if (childNode == null && toCreateChildIfNecessary) |
| childNode = addChild(aPathSegment); |
| return childNode; |
| } |
| |
| public ComponentResource[] findModuleResources(IPath aPath, boolean toCreateChildIfNecessary) { |
| |
| Set foundModuleResources = findModuleResourcesSet(aPath, toCreateChildIfNecessary); |
| if(foundModuleResources.size() == 0) |
| return NO_MODULE_RESOURCES; |
| return (ComponentResource[])foundModuleResources.toArray(new ComponentResource[foundModuleResources.size()]); |
| } |
| |
| public boolean hasModuleResources() { |
| return moduleResources.size() > 0; |
| } |
| |
| public ComponentResource[] getModuleResources() { |
| return (ComponentResource[])moduleResources.toArray(new ComponentResource[moduleResources.size()]); |
| } |
| |
| private Set findModuleResourcesSet(IPath aPath, boolean toCreateChildIfNecessary) { |
| |
| if (aPath.segmentCount() == 0) { |
| Set resources = aggregateResources(new HashSet()); |
| return resources; |
| } |
| ResourceTreeNode child = findChild(aPath.segment(0), toCreateChildIfNecessary); |
| if (child == null) |
| return findMatchingVirtualPathsSet(aPath); |
| Set foundResources = new HashSet(); |
| foundResources.addAll(child.findModuleResourcesSet(aPath.removeFirstSegments(1), toCreateChildIfNecessary)); |
| foundResources.addAll(findMatchingVirtualPathsSet(aPath)); |
| return foundResources; |
| } |
| |
| private Set findMatchingVirtualPathsSet(IPath aPath) { |
| if(hasModuleResources()) { |
| ComponentResource moduleResource = null; |
| IResource eclipseResource = null; |
| IContainer eclipseContainer = null; |
| for(Iterator resourceIter = moduleResources.iterator(); resourceIter.hasNext(); ) { |
| moduleResource = (ComponentResource) resourceIter.next(); |
| eclipseResource = ModuleCore.getEclipseResource(moduleResource); |
| if(eclipseResource.getType() == IResource.FOLDER) { |
| eclipseContainer = (IContainer)eclipseResource; |
| if(eclipseContainer.getFile(aPath).exists() || eclipseContainer.getFolder(aPath).exists()) |
| return Collections.singleton(moduleResource); |
| } |
| |
| } |
| } |
| return Collections.EMPTY_SET; |
| } |
| |
| private Set aggregateResources(Set anAggregationSet) { |
| if (hasModuleResources()) |
| anAggregationSet.addAll(moduleResources); |
| ResourceTreeNode childNode = null; |
| for (Iterator childrenIterator = children.values().iterator(); childrenIterator.hasNext();) { |
| childNode = (ResourceTreeNode) childrenIterator.next(); |
| childNode.aggregateResources(anAggregationSet); |
| } |
| return anAggregationSet; |
| } |
| |
| public int childrenCount() { |
| return children.size(); |
| } |
| |
| public String getPathSegment() { |
| return pathSegment; |
| } |
| |
| protected ResourceTreeNode addChild(String aPathSegment) { |
| ResourceTreeNode newChild = null; |
| if ( (newChild = (ResourceTreeNode) children.get(aPathSegment)) == null) { |
| newChild = new ResourceTreeNode(aPathSegment, this, pathProvider); |
| children.put(newChild.getPathSegment(), newChild); |
| } |
| return newChild; |
| } |
| |
| protected ResourceTreeNode removeChild(String aPathSegment) { |
| return (ResourceTreeNode) children.remove(aPathSegment); |
| } |
| |
| /* package */ void addModuleResource(ComponentResource aModuleResource) { |
| moduleResources.add(aModuleResource); |
| } |
| |
| /* package */ IPathProvider getPathProvider() { |
| return pathProvider; |
| } |
| } |