| /* |
| * Copyright (C) 2017 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.picker; |
| |
| import android.app.Activity; |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.database.Cursor; |
| import android.net.Uri; |
| import android.util.Log; |
| |
| import com.android.documentsui.base.DocumentStack; |
| import com.android.documentsui.base.Shared; |
| import com.android.documentsui.base.State; |
| import com.android.documentsui.roots.RootsAccess; |
| |
| import libcore.io.IoUtils; |
| |
| import java.io.IOException; |
| |
| import javax.annotation.Nullable; |
| |
| /** |
| * An interface that stores the last accessed stack of the caller |
| */ |
| public interface LastAccessedStorage { |
| |
| @Nullable DocumentStack getLastAccessed( |
| Activity activity, RootsAccess roots, State state); |
| |
| void setLastAccessed(Activity activity, DocumentStack stack); |
| |
| void setLastAccessedToExternalApp(Activity activity); |
| |
| static LastAccessedStorage create() { |
| return new RuntimeLastAccessedStorage(); |
| } |
| |
| class RuntimeLastAccessedStorage implements LastAccessedStorage { |
| |
| private static final String TAG = "LastAccessedStorage"; |
| |
| private RuntimeLastAccessedStorage() {} |
| |
| @Override |
| public @Nullable DocumentStack getLastAccessed( |
| Activity activity, RootsAccess roots, State state) { |
| final String packageName = Shared.getCallingPackageName(activity); |
| final Uri resumeUri = LastAccessedProvider.buildLastAccessed(packageName); |
| final ContentResolver resolver = activity.getContentResolver(); |
| Cursor cursor = resolver.query(resumeUri, null, null, null, null); |
| try { |
| return DocumentStack.fromLastAccessedCursor( |
| cursor, roots.getMatchingRootsBlocking(state), resolver); |
| } catch (IOException e) { |
| Log.w(TAG, "Failed to resume: ", e); |
| } finally { |
| IoUtils.closeQuietly(cursor); |
| } |
| |
| return null; |
| } |
| |
| @Override |
| public void setLastAccessed(Activity activity, DocumentStack stack) { |
| String packageName = Shared.getCallingPackageName(activity); |
| LastAccessedProvider.setLastAccessed(activity.getContentResolver(), packageName, stack); |
| } |
| |
| @Override |
| public void setLastAccessedToExternalApp(Activity activity) { |
| final String packageName = Shared.getCallingPackageName(activity); |
| final ContentValues values = new ContentValues(); |
| values.put(LastAccessedProvider.Columns.EXTERNAL, 1); |
| activity.getContentResolver().insert( |
| LastAccessedProvider.buildLastAccessed(packageName), values); |
| } |
| } |
| } |