| /* |
| * Copyright (C) 2011 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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.common.resources; |
| |
| import com.android.ide.common.rendering.api.DensityBasedResourceValue; |
| import com.android.ide.common.rendering.api.ResourceValue; |
| import com.android.ide.common.resources.ValueResourceParser.IValueResourceRepository; |
| import com.android.ide.common.resources.configuration.DensityQualifier; |
| import com.android.io.IAbstractFile; |
| import com.android.io.StreamException; |
| import com.android.resources.ResourceType; |
| |
| import java.io.IOException; |
| import java.util.Collection; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Represents a resource file that also generates ID resources. |
| * <p/> |
| * This is typically an XML file in res/layout or res/menu |
| */ |
| public final class IdGeneratingResourceFile extends ResourceFile |
| implements IValueResourceRepository { |
| |
| private final Map<String, ResourceValue> mIdResources = |
| new HashMap<String, ResourceValue>(); |
| |
| private final Collection<ResourceType> mResourceTypeList; |
| |
| private final String mFileName; |
| |
| private final ResourceType mFileType; |
| |
| private final ResourceValue mFileValue; |
| |
| public IdGeneratingResourceFile(IAbstractFile file, ResourceFolder folder, ResourceType type) { |
| super(file, folder); |
| |
| mFileType = type; |
| |
| // Set up our resource types |
| mResourceTypeList = new HashSet<ResourceType>(); |
| mResourceTypeList.add(mFileType); |
| mResourceTypeList.add(ResourceType.ID); |
| |
| // compute the resource name |
| mFileName = getFileName(type); |
| |
| // Get the resource value of this file as a whole layout |
| mFileValue = getFileValue(file, folder); |
| } |
| |
| @Override |
| protected void load(ScanningContext context) { |
| // Parse the file and look for @+id/ entries |
| parseFileForIds(context); |
| |
| // create the resource items in the repository |
| updateResourceItems(context); |
| } |
| |
| @Override |
| protected void update(ScanningContext context) { |
| // Copy the previous list of ID names |
| Set<String> oldIdNames = new HashSet<String>(mIdResources.keySet()); |
| |
| // reset current content. |
| mIdResources.clear(); |
| |
| // need to parse the file and find the IDs. |
| if (!parseFileForIds(context)) { |
| context.requestFullAapt(); |
| // Continue through to updating the resource item here since it |
| // will make for example layout rendering more accurate until |
| // aapt is re-run |
| } |
| |
| // We only need to update the repository if our IDs have changed |
| Set<String> keySet = mIdResources.keySet(); |
| assert keySet != oldIdNames; |
| if (oldIdNames.equals(keySet) == false) { |
| updateResourceItems(context); |
| } |
| } |
| |
| @Override |
| protected void dispose(ScanningContext context) { |
| ResourceRepository repository = getRepository(); |
| |
| // Remove declarations from this file from the repository |
| repository.removeFile(mResourceTypeList, this); |
| |
| // Ask for an ID refresh since we'll be taking away ID generating items |
| context.requestFullAapt(); |
| } |
| |
| @Override |
| public Collection<ResourceType> getResourceTypes() { |
| return mResourceTypeList; |
| } |
| |
| @Override |
| public boolean hasResources(ResourceType type) { |
| return (type == mFileType) || (type == ResourceType.ID && !mIdResources.isEmpty()); |
| } |
| |
| @Override |
| public ResourceValue getValue(ResourceType type, String name) { |
| // Check to see if they're asking for one of the right types: |
| if (type != mFileType && type != ResourceType.ID) { |
| return null; |
| } |
| |
| // If they're looking for a resource of this type with this name give them the whole file |
| if (type == mFileType && name.equals(mFileName)) { |
| return mFileValue; |
| } else { |
| // Otherwise try to return them an ID |
| // the map will return null if it's not found |
| return mIdResources.get(name); |
| } |
| } |
| |
| /** |
| * Looks through the file represented for Ids and adds them to |
| * our id repository |
| * |
| * @return true if parsing succeeds and false if it fails |
| */ |
| private boolean parseFileForIds(ScanningContext context) { |
| IdResourceParser parser = new IdResourceParser(this, context, isFramework()); |
| try { |
| IAbstractFile file = getFile(); |
| return parser.parse(mFileType, file.getOsLocation(), file.getContents()); |
| } catch (IOException e) { |
| // Pass |
| } catch (StreamException e) { |
| // Pass |
| } |
| |
| return false; |
| } |
| |
| /** |
| * Add the resources represented by this file to the repository |
| */ |
| private void updateResourceItems(ScanningContext context) { |
| ResourceRepository repository = getRepository(); |
| |
| // remove this file from all existing ResourceItem. |
| repository.removeFile(mResourceTypeList, this); |
| |
| // First add this as a layout file |
| ResourceItem item = repository.getResourceItem(mFileType, mFileName); |
| item.add(this); |
| |
| // Now iterate through our IDs and add |
| for (String idName : mIdResources.keySet()) { |
| item = repository.getResourceItem(ResourceType.ID, idName); |
| // add this file to the list of files generating ID resources. |
| item.add(this); |
| } |
| |
| // Ask the repository for an ID refresh |
| context.requestFullAapt(); |
| } |
| |
| /** |
| * Returns the resource value associated with this whole file as a layout resource |
| * @param file the file handler that represents this file |
| * @param folder the folder this file is under |
| * @return a resource value associated with this layout |
| */ |
| private ResourceValue getFileValue(IAbstractFile file, ResourceFolder folder) { |
| // test if there's a density qualifier associated with the resource |
| DensityQualifier qualifier = folder.getConfiguration().getDensityQualifier(); |
| |
| ResourceValue value; |
| if (qualifier == null) { |
| value = new ResourceValue(mFileType, mFileName, |
| file.getOsLocation(), isFramework()); |
| } else { |
| value = new DensityBasedResourceValue( |
| mFileType, mFileName, |
| file.getOsLocation(), |
| qualifier.getValue(), |
| isFramework()); |
| } |
| return value; |
| } |
| |
| |
| /** |
| * Returns the name of this resource. |
| */ |
| private String getFileName(ResourceType type) { |
| // get the name from the filename. |
| String name = getFile().getName(); |
| |
| int pos = name.indexOf('.'); |
| if (pos != -1) { |
| name = name.substring(0, pos); |
| } |
| |
| return name; |
| } |
| |
| @Override |
| public void addResourceValue(ResourceValue value) { |
| // Just overwrite collisions. We're only interested in the unique |
| // IDs declared |
| mIdResources.put(value.getName(), value); |
| } |
| |
| @Override |
| public boolean hasResourceValue(ResourceType type, String name) { |
| if (type == ResourceType.ID) { |
| return mIdResources.containsKey(name); |
| } |
| |
| return false; |
| } |
| } |