/*
* 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 android.view.textservice;
import android.content.ComponentName;
import android.content.Context;
import android.content.pm.PackageManager;
import android.content.pm.ResolveInfo;
import android.content.pm.ServiceInfo;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.content.res.XmlResourceParser;
import android.graphics.drawable.Drawable;
import android.os.Parcel;
import android.os.Parcelable;
import android.util.AttributeSet;
import android.util.PrintWriterPrinter;
import android.util.Slog;
import android.util.Xml;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
/**
* This class is used to specify meta information of a spell checker.
*/
public final class SpellCheckerInfo implements Parcelable {
private static final String TAG = SpellCheckerInfo.class.getSimpleName();
private final ResolveInfo mService;
private final String mId;
private final int mLabel;
/**
* The spell checker setting activity's name, used by the system settings to
* launch the setting activity.
*/
private final String mSettingsActivityName;
/**
* The array of subtypes.
*/
private final ArrayList<SpellCheckerSubtype> mSubtypes = new ArrayList<>();
/**
* Constructor.
* @hide
*/
public SpellCheckerInfo(Context context, ResolveInfo service)
throws XmlPullParserException, IOException {
mService = service;
ServiceInfo si = service.serviceInfo;
mId = new ComponentName(si.packageName, si.name).flattenToShortString();
final PackageManager pm = context.getPackageManager();
int label = 0;
String settingsActivityComponent = null;
XmlResourceParser parser = null;
try {
parser = si.loadXmlMetaData(pm, SpellCheckerSession.SERVICE_META_DATA);
if (parser == null) {
throw new XmlPullParserException("No "
+ SpellCheckerSession.SERVICE_META_DATA + " meta-data");
}
final Resources res = pm.getResourcesForApplication(si.applicationInfo);
final AttributeSet attrs = Xml.asAttributeSet(parser);
int type;
while ((type=parser.next()) != XmlPullParser.END_DOCUMENT
&& type != XmlPullParser.START_TAG) {
}
final String nodeName = parser.getName();
if (!"spell-checker".equals(nodeName)) {
throw new XmlPullParserException(
"Meta-data does not start with spell-checker tag");
}
TypedArray sa = res.obtainAttributes(attrs,
com.android.internal.R.styleable.SpellChecker);
label = sa.getResourceId(com.android.internal.R.styleable.SpellChecker_label, 0);
settingsActivityComponent = sa.getString(
com.android.internal.R.styleable.SpellChecker_settingsActivity);
sa.recycle();
final int depth = parser.getDepth();
// Parse all subtypes
while (((type = parser.next()) != XmlPullParser.END_TAG || parser.getDepth() > depth)
&& type != XmlPullParser.END_DOCUMENT) {
if (type == XmlPullParser.START_TAG) {
final String subtypeNodeName = parser.getName();
if (!"subtype".equals(subtypeNodeName)) {
throw new XmlPullParserException(
"Meta-data in spell-checker does not start with subtype tag");
}
final TypedArray a = res.obtainAttributes(
attrs, com.android.internal.R.styleable.SpellChecker_Subtype);
SpellCheckerSubtype subtype = new SpellCheckerSubtype(
a.getResourceId(com.android.internal.R.styleable
.SpellChecker_Subtype_label, 0),
a.getString(com.android.internal.R.styleable
.SpellChecker_Subtype_subtypeLocale),
a.getString(com.android.internal.R.styleable
.SpellChecker_Subtype_languageTag),
a.getString(com.android.internal.R.styleable
.SpellChecker_Subtype_subtypeExtraValue),
a.getInt(com.android.internal.R.styleable
.SpellChecker_Subtype_subtypeId, 0));
mSubtypes.add(subtype);
}
}
} catch (Exception e) {
Slog.e(TAG, "Caught exception: " + e);
throw new XmlPullParserException(
"Unable to create context for: " + si.packageName);
} finally {
if (parser != null) parser.close();
}
mLabel = label;
mSettingsActivityName = settingsActivityComponent;
}
/**
* Constructor.
* @hide
*/
public SpellCheckerInfo(Parcel source) {
mLabel = source.readInt();
mId = source.readString();
mSettingsActivityName = source.readString();
mService = ResolveInfo.CREATOR.createFromParcel(source);
source.readTypedList(mSubtypes, SpellCheckerSubtype.CREATOR);
}
/**
* Return a unique ID for this spell checker. The ID is generated from
* the package and class name implementing the method.
*/
public String getId() {
return mId;
}
/**
* Return the component of the service that implements.
*/
public ComponentName getComponent() {
return new ComponentName(
mService.serviceInfo.packageName, mService.serviceInfo.name);
}
/**
* Return the .apk package that implements this.
*/
public String getPackageName() {
return mService.serviceInfo.packageName;
}
/**
* Used to package this object into a {@link Parcel}.
*
* @param dest The {@link Parcel} to be written.
* @param flags The flags used for parceling.
*/
@Override
public void writeToParcel(Parcel dest, int flags) {
dest.writeInt(mLabel);
dest.writeString(mId);
dest.writeString(mSettingsActivityName);
mService.writeToParcel(dest, flags);
dest.writeTypedList(mSubtypes);
}
/**
* Used to make this class parcelable.
*/
public static final Parcelable.Creator<SpellCheckerInfo> CREATOR
= new Parcelable.Creator<SpellCheckerInfo>() {
@Override
public SpellCheckerInfo createFromParcel(Parcel source) {
return new SpellCheckerInfo(source);
}
@Override
public SpellCheckerInfo[] newArray(int size) {
return new SpellCheckerInfo[size];
}
};
/**
* Load the user-displayed label for this spell checker.
*
* @param pm Supply a PackageManager used to load the spell checker's resources.
*/
public CharSequence loadLabel(PackageManager pm) {
if (mLabel == 0 || pm == null) return "";
return pm.getText(getPackageName(), mLabel, mService.serviceInfo.applicationInfo);
}
/**
* Load the user-displayed icon for this spell checker.
*
* @param pm Supply a PackageManager used to load the spell checker's resources.
*/
public Drawable loadIcon(PackageManager pm) {
return mService.loadIcon(pm);
}
/**
* Return the raw information about the Service implementing this
* spell checker. Do not modify the returned object.
*/
public ServiceInfo getServiceInfo() {
return mService.serviceInfo;
}
/**
* Return the class name of an activity that provides a settings UI.
* You can launch this activity be starting it with
* an {@link android.content.Intent} whose action is MAIN and with an
* explicit {@link android.content.ComponentName}
* composed of {@link #getPackageName} and the class name returned here.
*
* <p>A null will be returned if there is no settings activity.
*/
public String getSettingsActivity() {
return mSettingsActivityName;
}
/**
* Return the count of the subtypes.
*/
public int getSubtypeCount() {
return mSubtypes.size();
}
/**
* Return the subtype at the specified index.
*
* @param index the index of the subtype to return.
*/
public SpellCheckerSubtype getSubtypeAt(int index) {
return mSubtypes.get(index);
}
/**
* Used to make this class parcelable.
*/
@Override
public int describeContents() {
return 0;
}
/**
* @hide
*/
public void dump(final PrintWriter pw, final String prefix) {
pw.println(prefix + "mId=" + mId);
pw.println(prefix + "mSettingsActivityName=" + mSettingsActivityName);
pw.println(prefix + "Service:");
mService.dump(new PrintWriterPrinter(pw), prefix + " ");
final int N = getSubtypeCount();
for (int i = 0; i < N; i++) {
final SpellCheckerSubtype st = getSubtypeAt(i);
pw.println(prefix + " " + "Subtype #" + i + ":");
pw.println(prefix + " " + "locale=" + st.getLocale()
+ " languageTag=" + st.getLanguageTag());
pw.println(prefix + " " + "extraValue=" + st.getExtraValue());
}
}
}