/*
* Copyright (C) 2007 The Android Open Source Project
*
* Licensed under the Eclipse Public License, Version 1.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.eclipse.org/org/documents/epl-v10.php
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.ide.eclipse.editors.resources.manager;
import com.android.ide.eclipse.common.resources.ResourceType;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Set;
/**
* This class gives access to the bi directional relationship between {@link ResourceType} and
* {@link ResourceFolderType}.
*/
public final class FolderTypeRelationship {
private final static HashMap<ResourceType, ResourceFolderType[]> mTypeToFolderMap =
new HashMap<ResourceType, ResourceFolderType[]>();
private final static HashMap<ResourceFolderType, ResourceType[]> mFolderToTypeMap =
new HashMap<ResourceFolderType, ResourceType[]>();
// generate the relationships.
static {
HashMap<ResourceType, List<ResourceFolderType>> typeToFolderMap =
new HashMap<ResourceType, List<ResourceFolderType>>();
HashMap<ResourceFolderType, List<ResourceType>> folderToTypeMap =
new HashMap<ResourceFolderType, List<ResourceType>>();
add(ResourceType.ANIM, ResourceFolderType.ANIM, typeToFolderMap, folderToTypeMap);
add(ResourceType.ARRAY, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.COLOR, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.COLOR, ResourceFolderType.COLOR, typeToFolderMap, folderToTypeMap);
add(ResourceType.DIMEN, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.DRAWABLE, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.DRAWABLE, ResourceFolderType.DRAWABLE, typeToFolderMap, folderToTypeMap);
add(ResourceType.ID, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.LAYOUT, ResourceFolderType.LAYOUT, typeToFolderMap, folderToTypeMap);
add(ResourceType.MENU, ResourceFolderType.MENU, typeToFolderMap, folderToTypeMap);
add(ResourceType.RAW, ResourceFolderType.RAW, typeToFolderMap, folderToTypeMap);
add(ResourceType.STRING, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.STYLE, ResourceFolderType.VALUES, typeToFolderMap, folderToTypeMap);
add(ResourceType.XML, ResourceFolderType.XML, typeToFolderMap, folderToTypeMap);
optimize(typeToFolderMap, folderToTypeMap);
}
/**
* Returns a list of {@link ResourceType}s that can be generated from files inside a folder
* of the specified type.
* @param folderType The folder type.
* @return an array of {@link ResourceType}
*/
public static ResourceType[] getRelatedResourceTypes(ResourceFolderType folderType) {
ResourceType[] array = mFolderToTypeMap.get(folderType);
if (array != null) {
return array;
}
return new ResourceType[0];
}
/**
* Returns a list of {@link ResourceFolderType} that can contain files generating resources
* of the specified type.
* @param resType the type of resource.
* @return an array of {@link ResourceFolderType}
*/
public static ResourceFolderType[] getRelatedFolders(ResourceType resType) {
ResourceFolderType[] array = mTypeToFolderMap.get(resType);
if (array != null) {
return array;
}
return new ResourceFolderType[0];
}
/**
* Returns true if the {@link ResourceType} and the {@link ResourceFolderType} values match.
* @param resType the resource type.
* @param folderType the folder type.
* @return true if files inside the folder of the specified {@link ResourceFolderType}
* could generate a resource of the specified {@link ResourceType}
*/
public static boolean match(ResourceType resType, ResourceFolderType folderType) {
ResourceFolderType[] array = mTypeToFolderMap.get(resType);
if (array != null && array.length > 0) {
for (ResourceFolderType fType : array) {
if (fType == folderType) {
return true;
}
}
}
return false;
}
/**
* Adds a {@link ResourceType} - {@link ResourceFolderType} relationship. this indicates that
* a file in the folder can generate a resource of the specified type.
* @param type The resourceType
* @param folder The {@link ResourceFolderType}
* @param folderToTypeMap
* @param typeToFolderMap
*/
private static void add(ResourceType type, ResourceFolderType folder,
HashMap<ResourceType, List<ResourceFolderType>> typeToFolderMap,
HashMap<ResourceFolderType, List<ResourceType>> folderToTypeMap) {
// first we add the folder to the list associated with the type.
List<ResourceFolderType> folderList = typeToFolderMap.get(type);
if (folderList == null) {
folderList = new ArrayList<ResourceFolderType>();
typeToFolderMap.put(type, folderList);
}
if (folderList.indexOf(folder) == -1) {
folderList.add(folder);
}
// now we add the type to the list associated with the folder.
List<ResourceType> typeList = folderToTypeMap.get(folder);
if (typeList == null) {
typeList = new ArrayList<ResourceType>();
folderToTypeMap.put(folder, typeList);
}
if (typeList.indexOf(type) == -1) {
typeList.add(type);
}
}
/**
* Optimize the map to contains array instead of lists (since the api returns arrays)
* @param typeToFolderMap
* @param folderToTypeMap
*/
private static void optimize(HashMap<ResourceType, List<ResourceFolderType>> typeToFolderMap,
HashMap<ResourceFolderType, List<ResourceType>> folderToTypeMap) {
Set<ResourceType> types = typeToFolderMap.keySet();
for (ResourceType type : types) {
List<ResourceFolderType> list = typeToFolderMap.get(type);
mTypeToFolderMap.put(type, list.toArray(new ResourceFolderType[list.size()]));
}
Set<ResourceFolderType> folders = folderToTypeMap.keySet();
for (ResourceFolderType folder : folders) {
List<ResourceType> list = folderToTypeMap.get(folder);
mFolderToTypeMap.put(folder, list.toArray(new ResourceType[list.size()]));
}
}
}