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
17package android.support.customtabs;
18
19import android.content.Intent;
20import android.os.Bundle;
21import android.os.IBinder;
22import android.os.RemoteException;
23import android.support.v4.app.BundleCompat;
24import android.util.Log;
25
26/**
27 * Wrapper class that can be used as a unique identifier for a session. Also contains an accessor
28 * for the {@link CustomTabsCallback} for the session if there was any.
29 */
30public class CustomTabsSessionToken {
31    private static final String TAG = "CustomTabsSessionToken";
32    private final ICustomTabsCallback mCallbackBinder;
33    private final CustomTabsCallback mCallback;
34
35    /**
36     * Obtain a {@link CustomTabsSessionToken} from an intent. See {@link CustomTabsIntent.Builder}
37     * for ways to generate an intent for custom tabs.
38     * @param intent The intent to generate the token from. This has to include an extra for
39     *               {@link CustomTabsIntent#EXTRA_SESSION}.
40     * @return The token that was generated.
41     */
42    public static CustomTabsSessionToken getSessionTokenFromIntent(Intent intent) {
43        Bundle b = intent.getExtras();
44        IBinder binder = BundleCompat.getBinder(b, CustomTabsIntent.EXTRA_SESSION);
45        if (binder == null) return null;
46        return new CustomTabsSessionToken(ICustomTabsCallback.Stub.asInterface(binder));
47    }
48
49    CustomTabsSessionToken(ICustomTabsCallback callbackBinder) {
50        mCallbackBinder = callbackBinder;
51        mCallback = new CustomTabsCallback() {
52
53            @Override
54            public void onNavigationEvent(int navigationEvent, Bundle extras) {
55                try {
56                    mCallbackBinder.onNavigationEvent(navigationEvent, extras);
57                } catch (RemoteException e) {
58                    Log.e(TAG, "RemoteException during ICustomTabsCallback transaction");
59                }
60            }
61
62            @Override
63            public void extraCallback(String callbackName, Bundle args) {
64                try {
65                    mCallbackBinder.extraCallback(callbackName, args);
66                } catch (RemoteException e) {
67                    Log.e(TAG, "RemoteException during ICustomTabsCallback transaction");
68                }
69            }
70
71            @Override
72            public void onMessageChannelReady(Bundle extras) {
73                try {
74                    mCallbackBinder.onMessageChannelReady(extras);
75                } catch (RemoteException e) {
76                    Log.e(TAG, "RemoteException during ICustomTabsCallback transaction");
77                }
78            }
79
80            @Override
81            public void onPostMessage(String message, Bundle extras) {
82                try {
83                    mCallbackBinder.onPostMessage(message, extras);
84                } catch (RemoteException e) {
85                    Log.e(TAG, "RemoteException during ICustomTabsCallback transaction");
86                }
87            }
88        };
89    }
90
91    IBinder getCallbackBinder() {
92        return mCallbackBinder.asBinder();
93    }
94
95    @Override
96    public int hashCode() {
97        return getCallbackBinder().hashCode();
98    }
99
100    @Override
101    public boolean equals(Object o) {
102        if (!(o instanceof CustomTabsSessionToken)) return false;
103        CustomTabsSessionToken token = (CustomTabsSessionToken) o;
104        return token.getCallbackBinder().equals(mCallbackBinder.asBinder());
105    }
106
107    /**
108     * @return {@link CustomTabsCallback} corresponding to this session if there was any non-null
109     *         callbacks passed by the client.
110     */
111    public CustomTabsCallback getCallback() {
112        return mCallback;
113    }
114
115    /**
116     * @return Whether this token is associated with the given session.
117     */
118    public boolean isAssociatedWith(CustomTabsSession session) {
119        return session.getBinder().equals(mCallbackBinder);
120    }
121}
122