| /* |
| * 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.ContentProvider; |
| import android.content.ContentResolver; |
| import android.content.ContentValues; |
| import android.content.Context; |
| import android.content.UriMatcher; |
| import android.database.Cursor; |
| import android.database.sqlite.SQLiteDatabase; |
| import android.database.sqlite.SQLiteOpenHelper; |
| import android.net.Uri; |
| import android.text.format.DateUtils; |
| import android.util.Log; |
| |
| public class RecentsProvider extends ContentProvider { |
| private static final String TAG = "RecentsProvider"; |
| |
| // TODO: offer view of recents that handles backend root resolution before |
| // returning cursor, include extra columns |
| |
| public static final String AUTHORITY = "com.android.documentsui.recents"; |
| |
| private static final UriMatcher sMatcher = new UriMatcher(UriMatcher.NO_MATCH); |
| |
| private static final int URI_RECENT_OPEN = 1; |
| private static final int URI_RECENT_CREATE = 2; |
| private static final int URI_RESUME = 3; |
| |
| static { |
| sMatcher.addURI(AUTHORITY, "recent_open", URI_RECENT_OPEN); |
| sMatcher.addURI(AUTHORITY, "recent_create", URI_RECENT_CREATE); |
| sMatcher.addURI(AUTHORITY, "resume/*", URI_RESUME); |
| } |
| |
| private static final String TABLE_RECENT_OPEN = "recent_open"; |
| private static final String TABLE_RECENT_CREATE = "recent_create"; |
| private static final String TABLE_RESUME = "resume"; |
| |
| /** |
| * String of URIs pointing at a storage backend, stored as a JSON array, |
| * starting with root. |
| */ |
| public static final String COL_PATH = "path"; |
| public static final String COL_URI = "uri"; |
| public static final String COL_PACKAGE_NAME = "package_name"; |
| public static final String COL_TIMESTAMP = "timestamp"; |
| |
| @Deprecated |
| public static Uri buildRecentOpen() { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("recent_open").build(); |
| } |
| |
| public static Uri buildRecentCreate() { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("recent_create").build(); |
| } |
| |
| public static Uri buildResume(String packageName) { |
| return new Uri.Builder().scheme(ContentResolver.SCHEME_CONTENT) |
| .authority(AUTHORITY).appendPath("resume").appendPath(packageName).build(); |
| } |
| |
| private DatabaseHelper mHelper; |
| |
| private static class DatabaseHelper extends SQLiteOpenHelper { |
| private static final String DB_NAME = "recents.db"; |
| |
| private static final int VERSION_INIT = 1; |
| |
| public DatabaseHelper(Context context) { |
| super(context, DB_NAME, null, VERSION_INIT); |
| } |
| |
| @Override |
| public void onCreate(SQLiteDatabase db) { |
| db.execSQL("CREATE TABLE " + TABLE_RECENT_OPEN + " (" + |
| COL_URI + " TEXT PRIMARY KEY ON CONFLICT REPLACE," + |
| COL_TIMESTAMP + " INTEGER" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_RECENT_CREATE + " (" + |
| COL_PATH + " TEXT PRIMARY KEY ON CONFLICT REPLACE," + |
| COL_TIMESTAMP + " INTEGER" + |
| ")"); |
| |
| db.execSQL("CREATE TABLE " + TABLE_RESUME + " (" + |
| COL_PACKAGE_NAME + " TEXT PRIMARY KEY ON CONFLICT REPLACE," + |
| COL_PATH + " TEXT," + |
| COL_TIMESTAMP + " INTEGER" + |
| ")"); |
| } |
| |
| @Override |
| public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { |
| Log.w(TAG, "Upgrading database; wiping app data"); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECENT_OPEN); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RECENT_CREATE); |
| db.execSQL("DROP TABLE IF EXISTS " + TABLE_RESUME); |
| onCreate(db); |
| } |
| } |
| |
| @Override |
| public boolean onCreate() { |
| mHelper = new DatabaseHelper(getContext()); |
| return true; |
| } |
| |
| @Override |
| public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs, |
| String sortOrder) { |
| final SQLiteDatabase db = mHelper.getReadableDatabase(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT_OPEN: { |
| return db.query(TABLE_RECENT_OPEN, projection, |
| buildWhereYounger(DateUtils.WEEK_IN_MILLIS), null, null, null, null); |
| } |
| case URI_RECENT_CREATE: { |
| return db.query(TABLE_RECENT_CREATE, projection, |
| buildWhereYounger(DateUtils.WEEK_IN_MILLIS), null, null, null, null); |
| } |
| case URI_RESUME: { |
| final String packageName = uri.getPathSegments().get(1); |
| return db.query(TABLE_RESUME, projection, COL_PACKAGE_NAME + "=?", |
| new String[] { packageName }, null, null, null); |
| } |
| default: { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| } |
| |
| @Override |
| public String getType(Uri uri) { |
| return null; |
| } |
| |
| @Override |
| public Uri insert(Uri uri, ContentValues values) { |
| final SQLiteDatabase db = mHelper.getWritableDatabase(); |
| switch (sMatcher.match(uri)) { |
| case URI_RECENT_OPEN: { |
| values.put(COL_TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RECENT_OPEN, null, values); |
| db.delete(TABLE_RECENT_OPEN, buildWhereOlder(DateUtils.WEEK_IN_MILLIS), null); |
| return uri; |
| } |
| case URI_RECENT_CREATE: { |
| values.put(COL_TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RECENT_CREATE, null, values); |
| db.delete(TABLE_RECENT_CREATE, buildWhereOlder(DateUtils.WEEK_IN_MILLIS), null); |
| return uri; |
| } |
| case URI_RESUME: { |
| final String packageName = uri.getPathSegments().get(1); |
| values.put(COL_PACKAGE_NAME, packageName); |
| values.put(COL_TIMESTAMP, System.currentTimeMillis()); |
| db.insert(TABLE_RESUME, null, values); |
| return uri; |
| } |
| default: { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| } |
| } |
| |
| @Override |
| public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| |
| @Override |
| public int delete(Uri uri, String selection, String[] selectionArgs) { |
| throw new UnsupportedOperationException("Unsupported Uri " + uri); |
| } |
| |
| private static String buildWhereOlder(long deltaMillis) { |
| return COL_TIMESTAMP + "<" + (System.currentTimeMillis() - deltaMillis); |
| } |
| |
| private static String buildWhereYounger(long deltaMillis) { |
| return COL_TIMESTAMP + ">" + (System.currentTimeMillis() - deltaMillis); |
| } |
| } |