/*
* Copyright (C) 2008 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 android.content.res;
import com.android.ide.common.rendering.api.IProjectCallback;
import com.android.ide.common.rendering.api.LayoutLog;
import com.android.ide.common.rendering.api.ResourceValue;
import com.android.layoutlib.bridge.Bridge;
import com.android.layoutlib.bridge.BridgeConstants;
import com.android.layoutlib.bridge.android.BridgeContext;
import com.android.layoutlib.bridge.android.BridgeXmlBlockParser;
import com.android.layoutlib.bridge.impl.ParserFactory;
import com.android.layoutlib.bridge.impl.ResourceHelper;
import com.android.ninepatch.NinePatch;
import com.android.resources.ResourceType;
import com.android.util.Pair;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.util.TypedValue;
import android.view.ViewGroup.LayoutParams;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;
/**
*
*/
public final class BridgeResources extends Resources {
private BridgeContext mContext;
private IProjectCallback mProjectCallback;
private boolean[] mPlatformResourceFlag = new boolean[1];
private TypedValue mTmpValue = new TypedValue();
/**
* Simpler wrapper around FileInputStream. This is used when the input stream represent
* not a normal bitmap but a nine patch.
* This is useful when the InputStream is created in a method but used in another that needs
* to know whether this is 9-patch or not, such as BitmapFactory.
*/
public class NinePatchInputStream extends FileInputStream {
private boolean mFakeMarkSupport = true;
public NinePatchInputStream(File file) throws FileNotFoundException {
super(file);
}
@Override
public boolean markSupported() {
if (mFakeMarkSupport) {
// this is needed so that BitmapFactory doesn't wrap this in a BufferedInputStream.
return true;
}
return super.markSupported();
}
public void disableFakeMarkSupport() {
// disable fake mark support so that in case codec actually try to use them
// we don't lie to them.
mFakeMarkSupport = false;
}
}
/**
* This initializes the static field {@link Resources#mSystem} which is used
* by methods who get global resources using {@link Resources#getSystem()}.
* <p/>
* They will end up using our bridge resources.
* <p/>
* {@link Bridge} calls this method after setting up a new bridge.
*/
public static Resources initSystem(BridgeContext context,
AssetManager assets,
DisplayMetrics metrics,
Configuration config,
IProjectCallback projectCallback) {
return Resources.mSystem = new BridgeResources(context,
assets,
metrics,
config,
projectCallback);
}
/**
* Disposes the static {@link Resources#mSystem} to make sure we don't leave objects
* around that would prevent us from unloading the library.
*/
public static void disposeSystem() {
if (Resources.mSystem instanceof BridgeResources) {
((BridgeResources)(Resources.mSystem)).mContext = null;
((BridgeResources)(Resources.mSystem)).mProjectCallback = null;
}
Resources.mSystem = null;
}
private BridgeResources(BridgeContext context, AssetManager assets, DisplayMetrics metrics,
Configuration config, IProjectCallback projectCallback) {
super(assets, metrics, config);
mContext = context;
mProjectCallback = projectCallback;
}
public BridgeTypedArray newTypeArray(int numEntries, boolean platformFile) {
return new BridgeTypedArray(this, mContext, numEntries, platformFile);
}
private Pair<String, ResourceValue> getResourceValue(int id, boolean[] platformResFlag_out) {
// first get the String related to this id in the framework
Pair<ResourceType, String> resourceInfo = Bridge.resolveResourceId(id);
if (resourceInfo != null) {
platformResFlag_out[0] = true;
String attributeName = resourceInfo.getSecond();
return Pair.of(attributeName, mContext.getRenderResources().getFrameworkResource(
resourceInfo.getFirst(), attributeName));
}
// didn't find a match in the framework? look in the project.
if (mProjectCallback != null) {
resourceInfo = mProjectCallback.resolveResourceId(id);
if (resourceInfo != null) {
platformResFlag_out[0] = false;
String attributeName = resourceInfo.getSecond();
return Pair.of(attributeName, mContext.getRenderResources().getProjectResource(
resourceInfo.getFirst(), attributeName));
}
}
return null;
}
@Override
public Drawable getDrawable(int id) throws NotFoundException {
return getDrawable(id, null);
}
@Override
public Drawable getDrawable(int id, Theme theme) {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
return ResourceHelper.getDrawable(value.getSecond(), mContext, theme);
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public int getColor(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
try {
return ResourceHelper.getColor(value.getSecond().getValue());
} catch (NumberFormatException e) {
Bridge.getLog().error(LayoutLog.TAG_RESOURCES_FORMAT, e.getMessage(), e,
null /*data*/);
return 0;
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}
@Override
public ColorStateList getColorStateList(int id) throws NotFoundException {
Pair<String, ResourceValue> resValue = getResourceValue(id, mPlatformResourceFlag);
if (resValue != null) {
ColorStateList stateList = ResourceHelper.getColorStateList(resValue.getSecond(),
mContext);
if (stateList != null) {
return stateList;
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public CharSequence getText(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
return v;
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public XmlResourceParser getLayout(int id) throws NotFoundException {
Pair<String, ResourceValue> v = getResourceValue(id, mPlatformResourceFlag);
if (v != null) {
ResourceValue value = v.getSecond();
XmlPullParser parser = null;
try {
// check if the current parser can provide us with a custom parser.
if (mPlatformResourceFlag[0] == false) {
parser = mProjectCallback.getParser(value);
}
// create a new one manually if needed.
if (parser == null) {
File xml = new File(value.getValue());
if (xml.isFile()) {
// we need to create a pull parser around the layout XML file, and then
// give that to our XmlBlockParser
parser = ParserFactory.create(xml);
}
}
if (parser != null) {
return new BridgeXmlBlockParser(parser, mContext, mPlatformResourceFlag[0]);
}
} catch (XmlPullParserException e) {
Bridge.getLog().error(LayoutLog.TAG_BROKEN,
"Failed to configure parser for " + value.getValue(), e, null /*data*/);
// we'll return null below.
} catch (FileNotFoundException e) {
// this shouldn't happen since we check above.
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public XmlResourceParser getAnimation(int id) throws NotFoundException {
Pair<String, ResourceValue> v = getResourceValue(id, mPlatformResourceFlag);
if (v != null) {
ResourceValue value = v.getSecond();
XmlPullParser parser = null;
try {
File xml = new File(value.getValue());
if (xml.isFile()) {
// we need to create a pull parser around the layout XML file, and then
// give that to our XmlBlockParser
parser = ParserFactory.create(xml);
return new BridgeXmlBlockParser(parser, mContext, mPlatformResourceFlag[0]);
}
} catch (XmlPullParserException e) {
Bridge.getLog().error(LayoutLog.TAG_BROKEN,
"Failed to configure parser for " + value.getValue(), e, null /*data*/);
// we'll return null below.
} catch (FileNotFoundException e) {
// this shouldn't happen since we check above.
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public TypedArray obtainAttributes(AttributeSet set, int[] attrs) {
return mContext.obtainStyledAttributes(set, attrs);
}
@Override
public TypedArray obtainTypedArray(int id) throws NotFoundException {
throw new UnsupportedOperationException();
}
@Override
public float getDimension(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
if (v.equals(BridgeConstants.MATCH_PARENT) ||
v.equals(BridgeConstants.FILL_PARENT)) {
return LayoutParams.MATCH_PARENT;
} else if (v.equals(BridgeConstants.WRAP_CONTENT)) {
return LayoutParams.WRAP_CONTENT;
}
if (ResourceHelper.parseFloatAttribute(
value.getFirst(), v, mTmpValue, true /*requireUnit*/) &&
mTmpValue.type == TypedValue.TYPE_DIMENSION) {
return mTmpValue.getDimension(getDisplayMetrics());
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}
@Override
public int getDimensionPixelOffset(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
if (ResourceHelper.parseFloatAttribute(
value.getFirst(), v, mTmpValue, true /*requireUnit*/) &&
mTmpValue.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelOffset(mTmpValue.data,
getDisplayMetrics());
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}
@Override
public int getDimensionPixelSize(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
if (ResourceHelper.parseFloatAttribute(
value.getFirst(), v, mTmpValue, true /*requireUnit*/) &&
mTmpValue.type == TypedValue.TYPE_DIMENSION) {
return TypedValue.complexToDimensionPixelSize(mTmpValue.data,
getDisplayMetrics());
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}
@Override
public int getInteger(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
int radix = 10;
if (v.startsWith("0x")) {
v = v.substring(2);
radix = 16;
}
try {
return Integer.parseInt(v, radix);
} catch (NumberFormatException e) {
// return exception below
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return 0;
}
@Override
public boolean getBoolean(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
ResourceValue resValue = value.getSecond();
assert resValue != null;
if (resValue != null) {
String v = resValue.getValue();
if (v != null) {
return Boolean.parseBoolean(v);
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return false;
}
@Override
public String getResourceEntryName(int resid) throws NotFoundException {
throw new UnsupportedOperationException();
}
@Override
public String getResourceName(int resid) throws NotFoundException {
throw new UnsupportedOperationException();
}
@Override
public String getResourceTypeName(int resid) throws NotFoundException {
throw new UnsupportedOperationException();
}
@Override
public String getString(int id, Object... formatArgs) throws NotFoundException {
String s = getString(id);
if (s != null) {
return String.format(s, formatArgs);
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public String getString(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null && value.getSecond().getValue() != null) {
return value.getSecond().getValue();
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public void getValue(int id, TypedValue outValue, boolean resolveRefs)
throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
String v = value.getSecond().getValue();
if (v != null) {
if (ResourceHelper.parseFloatAttribute(value.getFirst(), v, outValue,
false /*requireUnit*/)) {
return;
}
// else it's a string
outValue.type = TypedValue.TYPE_STRING;
outValue.string = v;
return;
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
}
@Override
public void getValue(String name, TypedValue outValue, boolean resolveRefs)
throws NotFoundException {
throw new UnsupportedOperationException();
}
@Override
public XmlResourceParser getXml(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
String v = value.getSecond().getValue();
if (v != null) {
// check this is a file
File f = new File(v);
if (f.isFile()) {
try {
XmlPullParser parser = ParserFactory.create(f);
return new BridgeXmlBlockParser(parser, mContext, mPlatformResourceFlag[0]);
} catch (XmlPullParserException e) {
NotFoundException newE = new NotFoundException();
newE.initCause(e);
throw newE;
} catch (FileNotFoundException e) {
NotFoundException newE = new NotFoundException();
newE.initCause(e);
throw newE;
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public XmlResourceParser loadXmlResourceParser(String file, int id,
int assetCookie, String type) throws NotFoundException {
// even though we know the XML file to load directly, we still need to resolve the
// id so that we can know if it's a platform or project resource.
// (mPlatformResouceFlag will get the result and will be used later).
getResourceValue(id, mPlatformResourceFlag);
File f = new File(file);
try {
XmlPullParser parser = ParserFactory.create(f);
return new BridgeXmlBlockParser(parser, mContext, mPlatformResourceFlag[0]);
} catch (XmlPullParserException e) {
NotFoundException newE = new NotFoundException();
newE.initCause(e);
throw newE;
} catch (FileNotFoundException e) {
NotFoundException newE = new NotFoundException();
newE.initCause(e);
throw newE;
}
}
@Override
public InputStream openRawResource(int id) throws NotFoundException {
Pair<String, ResourceValue> value = getResourceValue(id, mPlatformResourceFlag);
if (value != null) {
String path = value.getSecond().getValue();
if (path != null) {
// check this is a file
File f = new File(path);
if (f.isFile()) {
try {
// if it's a nine-patch return a custom input stream so that
// other methods (mainly bitmap factory) can detect it's a 9-patch
// and actually load it as a 9-patch instead of a normal bitmap
if (path.toLowerCase().endsWith(NinePatch.EXTENSION_9PATCH)) {
return new NinePatchInputStream(f);
}
return new FileInputStream(f);
} catch (FileNotFoundException e) {
NotFoundException newE = new NotFoundException();
newE.initCause(e);
throw newE;
}
}
}
}
// id was not found or not resolved. Throw a NotFoundException.
throwException(id);
// this is not used since the method above always throws
return null;
}
@Override
public InputStream openRawResource(int id, TypedValue value) throws NotFoundException {
getValue(id, value, true);
String path = value.string.toString();
File f = new File(path);
if (f.isFile()) {
try {
// if it's a nine-patch return a custom input stream so that
// other methods (mainly bitmap factory) can detect it's a 9-patch
// and actually load it as a 9-patch instead of a normal bitmap
if (path.toLowerCase().endsWith(NinePatch.EXTENSION_9PATCH)) {
return new NinePatchInputStream(f);
}
return new FileInputStream(f);
} catch (FileNotFoundException e) {
NotFoundException exception = new NotFoundException();
exception.initCause(e);
throw exception;
}
}
throw new NotFoundException();
}
@Override
public AssetFileDescriptor openRawResourceFd(int id) throws NotFoundException {
throw new UnsupportedOperationException();
}
/**
* Builds and throws a {@link Resources.NotFoundException} based on a resource id and a resource type.
* @param id the id of the resource
* @throws NotFoundException
*/
private void throwException(int id) throws NotFoundException {
// first get the String related to this id in the framework
Pair<ResourceType, String> resourceInfo = Bridge.resolveResourceId(id);
// if the name is unknown in the framework, get it from the custom view loader.
if (resourceInfo == null && mProjectCallback != null) {
resourceInfo = mProjectCallback.resolveResourceId(id);
}
String message = null;
if (resourceInfo != null) {
message = String.format(
"Could not find %1$s resource matching value 0x%2$X (resolved name: %3$s) in current configuration.",
resourceInfo.getFirst(), id, resourceInfo.getSecond());
} else {
message = String.format(
"Could not resolve resource value: 0x%1$X.", id);
}
throw new NotFoundException(message);
}
}
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