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Merge "Remove persisted stacks when app removed/cleared." into klp-dev

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This commit is contained in:
Jeff Sharkey
2013-10-24 22:32:58 +00:00
committed by Android (Google) Code Review
parent 7c2a2ef2ee 758f97e46d
commit be41624863
3 changed files with 186 additions and 1 deletions
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8
packages/DocumentsUI/AndroidManifest.xml
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@ -50,6 +50,14 @@
android:authorities="com.android.documentsui.recents"
android:exported="false" />
<receiver android:name=".PackageReceiver">
<intent-filter>
<action android:name="android.intent.action.PACKAGE_FULLY_REMOVED" />
<action android:name="android.intent.action.PACKAGE_DATA_CLEARED" />
<data android:scheme="package" />
</intent-filter>
</receiver>
<!-- TODO: remove when we have real clients -->
<activity android:name=".TestActivity" android:enabled="false">
<intent-filter>

46
packages/DocumentsUI/src/com/android/documentsui/PackageReceiver.java Normal file
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@ -0,0 +1,46 @@
/*
* Copyright (C) 2013 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.documentsui;
import android.content.BroadcastReceiver;
import android.content.ContentResolver;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
/**
* Clean up {@link RecentsProvider} when packages are removed.
*/
public class PackageReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
final ContentResolver resolver = context.getContentResolver();
final String action = intent.getAction();
if (Intent.ACTION_PACKAGE_FULLY_REMOVED.equals(action)) {
resolver.call(RecentsProvider.buildRecent(), RecentsProvider.METHOD_PURGE, null, null);
} else if (Intent.ACTION_PACKAGE_DATA_CLEARED.equals(action)) {
final Uri data = intent.getData();
if (data != null) {
final String packageName = data.getSchemeSpecificPart();
resolver.call(RecentsProvider.buildRecent(), RecentsProvider.METHOD_PURGE_PACKAGE,
packageName, null);
}
}
}
}

133
packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java
View File

@ -16,24 +16,40 @@
package com.android.documentsui;
import static com.android.documentsui.model.DocumentInfo.getCursorString;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.content.UriMatcher;
import android.content.pm.ResolveInfo;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.net.Uri;
import android.os.Bundle;
import android.provider.DocumentsContract;
import android.provider.DocumentsContract.Document;
import android.provider.DocumentsContract.Root;
import android.text.format.DateUtils;
import android.util.Log;
import com.android.documentsui.model.DocumentStack;
import com.android.documentsui.model.DurableUtils;
import com.android.internal.util.Predicate;
import com.google.android.collect.Sets;
import libcore.io.IoUtils;
import java.io.IOException;
import java.util.Set;
public class RecentsProvider extends ContentProvider {
private static final String TAG = "RecentsProvider";
public static final long MAX_HISTORY_IN_MILLIS = 45 * DateUtils.DAY_IN_MILLIS;
private static final long MAX_HISTORY_IN_MILLIS = 45 * DateUtils.DAY_IN_MILLIS;
private static final String AUTHORITY = "com.android.documentsui.recents";
@ -43,6 +59,9 @@ public class RecentsProvider extends ContentProvider {
private static final int URI_STATE = 2;
private static final int URI_RESUME = 3;
public static final String METHOD_PURGE = "purge";
public static final String METHOD_PURGE_PACKAGE = "purgePackage";
static {
sMatcher.addURI(AUTHORITY, "recent", URI_RECENT);
// state/authority/rootId/docId
@ -231,4 +250,116 @@ public class RecentsProvider extends ContentProvider {
public int delete(Uri uri, String selection, String[] selectionArgs) {
throw new UnsupportedOperationException("Unsupported Uri " + uri);
}
@Override
public Bundle call(String method, String arg, Bundle extras) {
if (METHOD_PURGE.equals(method)) {
// Purge references to unknown authorities
final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE);
final Set<String> knownAuth = Sets.newHashSet();
for (ResolveInfo info : getContext()
.getPackageManager().queryIntentContentProviders(intent, 0)) {
knownAuth.add(info.providerInfo.authority);
}
purgeByAuthority(new Predicate<String>() {
@Override
public boolean apply(String authority) {
// Purge unknown authorities
return !knownAuth.contains(authority);
}
});
return null;
} else if (METHOD_PURGE_PACKAGE.equals(method)) {
// Purge references to authorities in given package
final Intent intent = new Intent(DocumentsContract.PROVIDER_INTERFACE);
intent.setPackage(arg);
final Set<String> packageAuth = Sets.newHashSet();
for (ResolveInfo info : getContext()
.getPackageManager().queryIntentContentProviders(intent, 0)) {
packageAuth.add(info.providerInfo.authority);
}
if (!packageAuth.isEmpty()) {
purgeByAuthority(new Predicate<String>() {
@Override
public boolean apply(String authority) {
// Purge authority matches
return packageAuth.contains(authority);
}
});
}
return null;
} else {
return super.call(method, arg, extras);
}
}
/**
* Purge all internal data whose authority matches the given
* {@link Predicate}.
*/
private void purgeByAuthority(Predicate<String> predicate) {
final SQLiteDatabase db = mHelper.getWritableDatabase();
final DocumentStack stack = new DocumentStack();
Cursor cursor = db.query(TABLE_RECENT, null, null, null, null, null, null);
try {
while (cursor.moveToNext()) {
try {
final byte[] rawStack = cursor.getBlob(
cursor.getColumnIndex(RecentColumns.STACK));
DurableUtils.readFromArray(rawStack, stack);
if (stack.root != null && predicate.apply(stack.root.authority)) {
final String key = getCursorString(cursor, RecentColumns.KEY);
db.delete(TABLE_RECENT, RecentColumns.KEY + "=?", new String[] { key });
}
} catch (IOException ignored) {
}
}
} finally {
IoUtils.closeQuietly(cursor);
}
cursor = db.query(TABLE_STATE, new String[] {
StateColumns.AUTHORITY }, null, null, StateColumns.AUTHORITY, null, null);
try {
while (cursor.moveToNext()) {
final String authority = getCursorString(cursor, StateColumns.AUTHORITY);
if (predicate.apply(authority)) {
db.delete(TABLE_STATE, StateColumns.AUTHORITY + "=?", new String[] {
authority });
Log.d(TAG, "Purged state for " + authority);
}
}
} finally {
IoUtils.closeQuietly(cursor);
}
cursor = db.query(TABLE_RESUME, null, null, null, null, null, null);
try {
while (cursor.moveToNext()) {
try {
final byte[] rawStack = cursor.getBlob(
cursor.getColumnIndex(ResumeColumns.STACK));
DurableUtils.readFromArray(rawStack, stack);
if (stack.root != null && predicate.apply(stack.root.authority)) {
final String packageName = getCursorString(
cursor, ResumeColumns.PACKAGE_NAME);
db.delete(TABLE_RESUME, ResumeColumns.PACKAGE_NAME + "=?",
new String[] { packageName });
}
} catch (IOException ignored) {
}
}
} finally {
IoUtils.closeQuietly(cursor);
}
}
}