1 /*
2  * Copyright (C) 2014 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.os;
18 
19 import com.android.layoutlib.bridge.Bridge;
20 import com.android.layoutlib.bridge.impl.DelegateManager;
21 import com.android.tools.layoutlib.annotations.LayoutlibDelegate;
22 
23 import java.util.Map;
24 
25 /**
26  * Delegate implementing the native methods of android.os.SystemProperties
27  *
28  * Through the layoutlib_create tool, the original native methods of SystemProperties have been
29  * replaced by calls to methods of the same name in this delegate class.
30  *
31  * Because it's a stateless class to start with, there's no need to keep a {@link DelegateManager}
32  * around to map int to instance of the delegate.
33  */
34 public class SystemProperties_Delegate {
35 
36     @LayoutlibDelegate
native_get(String key)37     /*package*/ static String native_get(String key) {
38         return native_get(key, "");
39     }
40 
41     @LayoutlibDelegate
native_get(String key, String def)42     /*package*/ static String native_get(String key, String def) {
43         Map<String, String> properties = Bridge.getPlatformProperties();
44         String value = properties.get(key);
45         if (value != null) {
46             return value;
47         }
48 
49         return def;
50     }
51     @LayoutlibDelegate
native_get_int(String key, int def)52     /*package*/ static int native_get_int(String key, int def) {
53         Map<String, String> properties = Bridge.getPlatformProperties();
54         String value = properties.get(key);
55         if (value != null) {
56             return Integer.decode(value);
57         }
58 
59         return def;
60     }
61 
62     @LayoutlibDelegate
native_get_long(String key, long def)63     /*package*/ static long native_get_long(String key, long def) {
64         Map<String, String> properties = Bridge.getPlatformProperties();
65         String value = properties.get(key);
66         if (value != null) {
67             return Long.decode(value);
68         }
69 
70         return def;
71     }
72 
73     /**
74      * Values 'n', 'no', '0', 'false' or 'off' are considered false.
75      * Values 'y', 'yes', '1', 'true' or 'on' are considered true.
76      */
77     @LayoutlibDelegate
native_get_boolean(String key, boolean def)78     /*package*/ static boolean native_get_boolean(String key, boolean def) {
79         Map<String, String> properties = Bridge.getPlatformProperties();
80         String value = properties.get(key);
81 
82         if ("n".equals(value) || "no".equals(value) || "0".equals(value) || "false".equals(value)
83                 || "off".equals(value)) {
84             return false;
85         }
86         //noinspection SimplifiableIfStatement
87         if ("y".equals(value) || "yes".equals(value) || "1".equals(value) || "true".equals(value)
88                 || "on".equals(value)) {
89             return true;
90         }
91 
92         return def;
93     }
94 
95     @LayoutlibDelegate
native_set(String key, String def)96     /*package*/ static void native_set(String key, String def) {
97         Map<String, String> properties = Bridge.getPlatformProperties();
98         properties.put(key, def);
99     }
100 
101     @LayoutlibDelegate
native_add_change_callback()102     /*package*/ static void native_add_change_callback() {
103         // pass.
104     }
105 
106     @LayoutlibDelegate
native_report_sysprop_change()107     /*package*/ static void native_report_sysprop_change() {
108         // pass.
109     }
110 }
111