1 /*
2  * Copyright (C) 2015 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 com.android.packageinstaller.permission.ui;
18 
19 import android.graphics.drawable.Icon;
20 import android.os.Bundle;
21 import android.view.View;
22 import android.view.WindowManager;
23 
24 /**
25  * Class for managing the presentation and user interaction of the "grant
26  * permissions" user interface.
27  */
28 public interface GrantPermissionsViewHandler {
29 
30     /**
31      * Listener interface for getting notified when the user responds to a
32      * permissions grant request.
33      */
34     interface ResultListener {
onPermissionGrantResult(String groupName, boolean granted, boolean doNotAskAgain)35         void onPermissionGrantResult(String groupName, boolean granted, boolean doNotAskAgain);
36     }
37 
38     /**
39      * Creates and returns the view hierarchy that is managed by this view
40      * handler. This must be called before {@link #updateUi}.
41      */
createView()42     View createView();
43 
44     /**
45      * Updates the layout attributes of the current window. This is an optional
46      * operation; implementations only need to do work in this method if they
47      * need to alter the default styles provided by the activity's theme.
48      */
updateWindowAttributes(WindowManager.LayoutParams outLayoutParams)49     void updateWindowAttributes(WindowManager.LayoutParams outLayoutParams);
50 
51     /**
52      * Updates the view hierarchy to reflect the specified state.
53      * <p>
54      * Note that this must be called at least once before showing the UI to
55      * the user to properly initialize the UI.
56      *
57      * @param groupName the name of the permission group
58      * @param groupCount the total number of groups that are being requested
59      * @param groupIndex the index of the current group being requested
60      * @param icon the icon representation of the current group
61      * @param message the message to display the user
62      * @param showDoNotAsk whether to show the "do not ask again" option
63      */
updateUi(String groupName, int groupCount, int groupIndex, Icon icon, CharSequence message, boolean showDoNotAsk)64     void updateUi(String groupName, int groupCount, int groupIndex, Icon icon,
65             CharSequence message, boolean showDoNotAsk);
66 
67     /**
68      * Sets the result listener that will be notified when the user responds
69      * to a permissions grant request.
70      */
setResultListener(ResultListener listener)71     GrantPermissionsViewHandler setResultListener(ResultListener listener);
72 
73     /**
74      * Called by {@link GrantPermissionsActivity} to save the state of this
75      * view handler to the specified bundle.
76      */
saveInstanceState(Bundle outState)77     void saveInstanceState(Bundle outState);
78 
79     /**
80      * Called by {@link GrantPermissionsActivity} to load the state of this
81      * view handler from the specified bundle.
82      */
loadInstanceState(Bundle savedInstanceState)83     void loadInstanceState(Bundle savedInstanceState);
84 
85     /**
86      * Gives a chance for handling the back key.
87      */
onBackPressed()88     void onBackPressed();
89 }
90