src/chrome/browser/geolocation/chrome_geolocation_permission_context_android.cc

   1 // Copyright (c) 2012 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 #include "chrome/browser/geolocation/chrome_geolocation_permission_context_android.h"
   6
   7 #include "base/prefs/pref_service.h"
   8 #include "chrome/browser/android/google_location_settings_helper.h"
   9 #include "chrome/browser/profiles/profile.h"
  10 #include "chrome/common/pref_names.h"
  11 #include "content/public/browser/browser_thread.h"
  12 #include "content/public/browser/web_contents.h"
  13
  14 ChromeGeolocationPermissionContextAndroid::
  15 PermissionRequestInfo::PermissionRequestInfo()
  16     : id(0, 0, 0, 0),
  17       user_gesture(false) {}
  18
  19 ChromeGeolocationPermissionContextAndroid::
  20     ChromeGeolocationPermissionContextAndroid(Profile* profile)
  21     : ChromeGeolocationPermissionContext(profile),
  22       google_location_settings_helper_(
  23           GoogleLocationSettingsHelper::Create()) {
  24 }
  25
  26 ChromeGeolocationPermissionContextAndroid::
  27     ~ChromeGeolocationPermissionContextAndroid() {
  28 }
  29
  30 void ChromeGeolocationPermissionContextAndroid::ProceedDecidePermission(
  31     content::WebContents* web_contents,
  32     const PermissionRequestInfo& info,
  33     const std::string& accept_button_label,
  34     base::Callback<void(bool)> callback) {
  35   // Super class implementation expects everything in UI thread instead.
  36   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  37   ChromeGeolocationPermissionContext::DecidePermission(
  38       web_contents, info.id, info.requesting_frame, info.user_gesture,
  39       info.embedder, accept_button_label, callback);
  40 }
  41
  42 void ChromeGeolocationPermissionContextAndroid::CheckMasterLocation(
  43     content::WebContents* web_contents,
  44     const PermissionRequestInfo& info,
  45     base::Callback<void(bool)> callback) {
  46   // Check to see if the feature in its entirety has been disabled.
  47   // This must happen before other services (e.g. tabs, extensions)
  48   // get an opportunity to allow the geolocation request.
  49   bool enabled =
  50       google_location_settings_helper_->IsMasterLocationSettingEnabled();
  51
  52   // The flow for geolocation permission on android is:
  53   // - ChromeGeolocationPermissionContextAndroid::DecidePermission
  54   // intercepts the flow in the UI thread, and posts task
  55   // to the blocking pool to CheckMasterLocation (in order to
  56   // avoid strict-mode violation).
  57   // - At this point the master location permission is either:
  58   // -- enabled, in which we case it proceeds the normal flow
  59   // via ChromeGeolocationPermissionContext (which may create infobars, etc.).
  60   // -- disabled, in which case the permission is already decided.
  61   //
  62   // In either case, ChromeGeolocationPermissionContext expects these
  63   // in the UI thread.
  64   base::Closure ui_closure;
  65   if (enabled) {
  66     bool allow_label = google_location_settings_helper_->IsAllowLabel();
  67     std::string accept_button_label =
  68         google_location_settings_helper_->GetAcceptButtonLabel(allow_label);
  69     ui_closure = base::Bind(
  70         &ChromeGeolocationPermissionContextAndroid::ProceedDecidePermission,
  71         this, web_contents, info, accept_button_label, callback);
  72   } else {
  73     ui_closure = base::Bind(
  74         &ChromeGeolocationPermissionContextAndroid::PermissionDecided,
  75         this, info.id, info.requesting_frame, info.embedder, callback, false);
  76   }
  77
  78   // This method is executed from the BlockingPool, post the result
  79   // back to the UI thread.
  80   content::BrowserThread::PostTask(
  81       content::BrowserThread::UI, FROM_HERE, ui_closure);
  82 }
  83
  84 void ChromeGeolocationPermissionContextAndroid::DecidePermission(
  85     content::WebContents* web_contents,
  86     const PermissionRequestID& id,
  87     const GURL& requesting_frame,
  88     bool user_gesture,
  89     const GURL& embedder,
  90     const std::string& accept_button_label,
  91     base::Callback<void(bool)> callback) {
  92
  93   PermissionRequestInfo info;
  94   info.id = id;
  95   info.requesting_frame = requesting_frame;
  96   info.user_gesture = user_gesture;
  97   info.embedder = embedder;
  98
  99   // Called on the UI thread. However, do the work on a separate thread
 100   // to avoid strict mode violation.
 101   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 102   content::BrowserThread::PostBlockingPoolTask(FROM_HERE,
 103       base::Bind(
 104           &ChromeGeolocationPermissionContextAndroid::CheckMasterLocation,
 105           this, web_contents, info, callback));
 106 }
 107
 108 void ChromeGeolocationPermissionContextAndroid::PermissionDecided(
 109     const PermissionRequestID& id,
 110     const GURL& requesting_frame,
 111     const GURL& embedder,
 112     base::Callback<void(bool)> callback,
 113     bool allowed) {
 114   // If Google Apps Location setting is turned off then we ignore
 115   // the 'allow' website setting for this site and instead show
 116   // the infobar to go back to the 'settings' to turn it back on.
 117   if (allowed &&
 118       !google_location_settings_helper_->IsGoogleAppsLocationSettingEnabled()) {
 119     QueueController()->CreateInfoBarRequest(
 120         id, requesting_frame, embedder, "", callback);
 121     return;
 122   }
 123
 124   ChromeGeolocationPermissionContext::PermissionDecided(
 125       id, requesting_frame, embedder, callback, allowed);
 126 }