The Tor Browser: mobile/android/base/home/PanelAuthCache.java@fc2d59ddac77

     1 /* -*- Mode: Java; c-basic-offset: 4; tab-width: 20; indent-tabs-mode: nil; -*-

     2  * This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 package org.mozilla.gecko.home;

     8 import android.content.Context;

     9 import android.content.SharedPreferences;

    10 import android.content.SharedPreferences.OnSharedPreferenceChangeListener;

    11 import android.util.Log;

    13 import org.mozilla.gecko.GeckoSharedPrefs;

    15 /**

    16  * Cache used to store authentication state of dynamic panels. The values

    17  * in this cache are set in JS through the Home.panels API.

    18  *

    19  * {@code DynamicPanel} uses this cache to determine whether or not to

    20  * show authentication UI for dynamic panels, including listening for

    21  * changes in authentication state.

    22  */

    23 class PanelAuthCache {

    24     private static final String LOGTAG = "GeckoPanelAuthCache";

    26     // Keep this in sync with the constant defined in Home.jsm

    27     private static final String PREFS_PANEL_AUTH_PREFIX = "home_panels_auth_";

    29     private final Context mContext;

    30     private SharedPrefsListener mSharedPrefsListener;

    31     private OnChangeListener mChangeListener;

    33     public interface OnChangeListener {

    34         public void onChange(String panelId, boolean isAuthenticated);

    35     }

    37     public PanelAuthCache(Context context) {

    38         mContext = context;

    39     }

    41     private SharedPreferences getSharedPreferences() {

    42         return GeckoSharedPrefs.forProfile(mContext);

    43     }

    45     private String getPanelAuthKey(String panelId) {

    46         return PREFS_PANEL_AUTH_PREFIX + panelId;

    47     }

    49     public boolean isAuthenticated(String panelId) {

    50         final SharedPreferences prefs = getSharedPreferences();

    51         return prefs.getBoolean(getPanelAuthKey(panelId), false);

    52     }

    54     public void setOnChangeListener(OnChangeListener listener) {

    55         final SharedPreferences prefs = getSharedPreferences();

    57         if (mChangeListener != null) {

    58             prefs.unregisterOnSharedPreferenceChangeListener(mSharedPrefsListener);

    59             mSharedPrefsListener = null;

    60         }

    62         mChangeListener = listener;

    64         if (mChangeListener != null) {

    65             mSharedPrefsListener = new SharedPrefsListener();

    66             prefs.registerOnSharedPreferenceChangeListener(mSharedPrefsListener);

    67         }

    68     }

    70     private class SharedPrefsListener implements OnSharedPreferenceChangeListener {

    71         @Override

    72         public void onSharedPreferenceChanged(SharedPreferences prefs, String key) {

    73             if (key.startsWith(PREFS_PANEL_AUTH_PREFIX)) {

    74                 final String panelId = key.substring(PREFS_PANEL_AUTH_PREFIX.length());

    75                 final boolean isAuthenticated = prefs.getBoolean(key, false);

    77                 Log.d(LOGTAG, "Auth state changed: panelId=" + panelId + ", isAuthenticated=" + isAuthenticated);

    78                 mChangeListener.onChange(panelId, isAuthenticated);

    79             }

    80         }

    81     }

    82 }

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