am 180e484e: am be416248: Merge "Remove persisted stacks when app removed/cleared." into klp-dev (a5d24638) · Commits · e / os / android_frameworks_base

packages/DocumentsUI/AndroidManifest.xml

+8 −0

Original line number	Diff line number	Diff line
		@@ -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>

packages/DocumentsUI/src/com/android/documentsui/PackageReceiver.java

0 → 100644

+46 −0

Original line number	Diff line number	Diff line
		/*
		* 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);
		}
		}
		}
		}

packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java

+132 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}
		}
		}