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/*
* Copyright (C) 2007 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.configuration.PixelDensityQualifier;
import com.android.io.IAbstractFile;
import com.android.resources.FolderTypeRelationship;
import com.android.resources.ResourceType;
import java.util.Collection;
import java.util.List;
import javax.xml.parsers.SAXParserFactory;
/**
* Represents a resource file describing a single resource.
* <p/>
* This is typically an XML file inside res/anim, res/layout, or res/menu or an image file
* under res/drawable.
*/
public class SingleResourceFile extends ResourceFile {
private final static SAXParserFactory sParserFactory = SAXParserFactory.newInstance();
static {
sParserFactory.setNamespaceAware(true);
}
private String mResourceName;
private ResourceType mType;
private ResourceValue mValue;
public SingleResourceFile(IAbstractFile file, ResourceFolder folder) {
super(file, folder);
// we need to infer the type of the resource from the folder type.
// This is easy since this is a single Resource file.
List<ResourceType> types = FolderTypeRelationship.getRelatedResourceTypes(folder.getType());
mType = types.get(0);
// compute the resource name
mResourceName = getResourceName(mType);
// test if there's a density qualifier associated with the resource
PixelDensityQualifier qualifier = folder.getConfiguration().getPixelDensityQualifier();
if (qualifier == null) {
mValue = new ResourceValue(mType, getResourceName(mType),
file.getOsLocation(), isFramework());
} else {
mValue = new DensityBasedResourceValue(
mType,
getResourceName(mType),
file.getOsLocation(),
qualifier.getValue(),
isFramework());
}
}
@Override
protected void load() {
// get a resource item matching the given type and name
ResourceItem item = getRepository().getResourceItem(mType, mResourceName);
// add this file to the list of files generating this resource item.
item.add(this);
}
@Override
protected void update() {
// when this happens, nothing needs to be done since the file only generates
// a single resources that doesn't actually change (its content is the file path)
}
@Override
protected void dispose() {
// only remove this file from the existing ResourceItem.
getFolder().getRepository().removeFile(mType, this);
// don't need to touch the content, it'll get reclaimed as this objects disappear.
// In the mean time other objects may need to access it.
}
@Override
public Collection<ResourceType> getResourceTypes() {
return FolderTypeRelationship.getRelatedResourceTypes(getFolder().getType());
}
@Override
public boolean hasResources(ResourceType type) {
return FolderTypeRelationship.match(type, getFolder().getType());
}
/*
* (non-Javadoc)
* @see com.android.ide.eclipse.editors.resources.manager.ResourceFile#getValue(com.android.ide.eclipse.common.resources.ResourceType, java.lang.String)
*
* This particular implementation does not care about the type or name since a
* SingleResourceFile represents a file generating only one resource.
* The value returned is the full absolute path of the file in OS form.
*/
@Override
public ResourceValue getValue(ResourceType type, String name) {
return mValue;
}
/**
* Returns the name of the resources.
*/
private String getResourceName(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;
}
}
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