1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
|
/*
* 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);
}
}
|
