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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 package org.chromium.chrome.browser.profiles;
      6 
      7 import android.graphics.Bitmap;
      8 
      9 import org.chromium.base.CalledByNative;
     10 import org.chromium.base.ObserverList;
     11 import org.chromium.base.ThreadUtils;
     12 
     13 /**
     14  * Android wrapper of the ProfileDownloader which provides access from the Java layer.
     15  * The native ProfileDownloader requires its access to be in the UI thread.
     16  * See chrome/browser/profiles/profile_downloader.h/cc for more details.
     17  */
     18 public class ProfileDownloader {
     19     private static final ObserverList<Observer> sObservers = new ObserverList<Observer>();
     20 
     21     /**
     22      * Interface for receiving notifications on account information updates.
     23      */
     24     public interface Observer {
     25         /**
     26          * Notifies that an account data in the profile has been updated.
     27          * @param accountId An account ID.
     28          * @param fullName A full name.
     29          * @param bitmap A user picture.
     30          */
     31         void onProfileDownloaded(String accountId, String fullName, Bitmap bitmap);
     32     }
     33 
     34     /**
     35      * Add an observer.
     36      * @param observer An observer.
     37      */
     38     public static void addObserver(Observer observer) {
     39         sObservers.addObserver(observer);
     40     }
     41 
     42     /**
     43      * Remove an observer.
     44      * @param observer An observer.
     45      */
     46     public static void removeObserver(Observer observer) {
     47         sObservers.removeObserver(observer);
     48     }
     49 
     50     /**
     51      * Starts fetching the account information for a given account.
     52      * @param profile Profile associated with the request
     53      * @param accountId Account name to fetch the information for
     54      * @param imageSidePixels Request image side (in pixels)
     55      */
     56     public static void startFetchingAccountInfoFor(
     57             Profile profile, String accountId, int imageSidePixels) {
     58         ThreadUtils.assertOnUiThread();
     59         nativeStartFetchingAccountInfoFor(profile, accountId, imageSidePixels);
     60     }
     61 
     62     @CalledByNative
     63     private static void onProfileDownloadSuccess(String accountId, String fullName, Bitmap bitmap) {
     64         ThreadUtils.assertOnUiThread();
     65         for (Observer observer : sObservers) {
     66             observer.onProfileDownloaded(accountId, fullName, bitmap);
     67         }
     68     }
     69 
     70     /**
     71      * @param profile Profile
     72      * @return The profile name if cached, or null.
     73      */
     74     public static String getCachedName(Profile profile) {
     75         return nativeGetCachedNameForPrimaryAccount(profile);
     76     }
     77 
     78     /**
     79      * @param profile Profile
     80      * @return The profile avatar if cached, or null.
     81      */
     82     public static Bitmap getCachedAvatar(Profile profile) {
     83         return nativeGetCachedAvatarForPrimaryAccount(profile);
     84     }
     85 
     86     // Native methods.
     87     private static native void nativeStartFetchingAccountInfoFor(
     88             Profile profile, String accountId, int imageSidePixels);
     89     private static native String nativeGetCachedNameForPrimaryAccount(Profile profile);
     90     private static native Bitmap nativeGetCachedAvatarForPrimaryAccount(Profile profile);
     91 }
     92