Remove persisted stacks when app removed/cleared.
When an app's data is cleared, or it's uninstalled, remove any
persisted stacks.
Bug: 11355566
Change-Id: I4e5cf0ec710591ad62f1ad52c2e358616631af41
diff --git a/packages/DocumentsUI/AndroidManifest.xml b/packages/DocumentsUI/AndroidManifest.xml
index 6faf7f8..179bcd1 100644
--- a/packages/DocumentsUI/AndroidManifest.xml
+++ b/packages/DocumentsUI/AndroidManifest.xml
@@ -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>
diff --git a/packages/DocumentsUI/src/com/android/documentsui/PackageReceiver.java b/packages/DocumentsUI/src/com/android/documentsui/PackageReceiver.java
new file mode 100644
index 0000000..aef63af
--- /dev/null
+++ b/packages/DocumentsUI/src/com/android/documentsui/PackageReceiver.java
@@ -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);
+ }
+ }
+ }
+}
diff --git a/packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java b/packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java
index 4313fa7..f6e4349 100644
--- a/packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java
+++ b/packages/DocumentsUI/src/com/android/documentsui/RecentsProvider.java
@@ -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 @@
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 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);
+ }
+ }
}
