chrome/browser/geolocation/geolocation_permission_context_android.cc

   1 // Copyright 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/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 GeolocationPermissionContextAndroid::
  15 PermissionRequestInfo::PermissionRequestInfo()
  16     : id(0, 0, 0, GURL()),
  17       user_gesture(false) {}
  18
  19 GeolocationPermissionContextAndroid::
  20     GeolocationPermissionContextAndroid(Profile* profile)
  21     : GeolocationPermissionContext(profile),
  22       google_location_settings_helper_(
  23           GoogleLocationSettingsHelper::Create()) {
  24 }
  25
  26 GeolocationPermissionContextAndroid::~GeolocationPermissionContextAndroid() {
  27 }
  28
  29 void GeolocationPermissionContextAndroid::ProceedDecidePermission(
  30     content::WebContents* web_contents,
  31     const PermissionRequestInfo& info,
  32     base::Callback<void(bool)> callback) {
  33   // Super class implementation expects everything in UI thread instead.
  34   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  35   GeolocationPermissionContext::DecidePermission(
  36       web_contents, info.id, info.requesting_frame, info.user_gesture,
  37       info.embedder, callback);
  38 }
  39
  40 void GeolocationPermissionContextAndroid::CheckSystemLocation(
  41     content::WebContents* web_contents,
  42     const PermissionRequestInfo& info,
  43     base::Callback<void(bool)> callback) {
  44   // Check to see if the feature in its entirety has been disabled.
  45   // This must happen before other services (e.g. tabs, extensions)
  46   // get an opportunity to allow the geolocation request.
  47   bool enabled = google_location_settings_helper_->IsSystemLocationEnabled();
  48
  49   base::Closure ui_closure;
  50   if (enabled) {
  51     ui_closure = base::Bind(
  52         &GeolocationPermissionContextAndroid::ProceedDecidePermission,
  53         this, web_contents, info, callback);
  54   } else {
  55     ui_closure = base::Bind(
  56         &GeolocationPermissionContextAndroid::PermissionDecided,
  57         this, info.id, info.requesting_frame, info.embedder, callback, false);
  58   }
  59
  60   // This method is executed from the BlockingPool, post the result
  61   // back to the UI thread.
  62   content::BrowserThread::PostTask(
  63       content::BrowserThread::UI, FROM_HERE, ui_closure);
  64 }
  65
  66 void GeolocationPermissionContextAndroid::DecidePermission(
  67     content::WebContents* web_contents,
  68     const PermissionRequestID& id,
  69     const GURL& requesting_frame,
  70     bool user_gesture,
  71     const GURL& embedder,
  72     base::Callback<void(bool)> callback) {
  73
  74   PermissionRequestInfo info;
  75   info.id = id;
  76   info.requesting_frame = requesting_frame;
  77   info.user_gesture = user_gesture;
  78   info.embedder = embedder;
  79
  80   // Called on the UI thread. However, do the work on a separate thread
  81   // to avoid strict mode violation.
  82   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
  83   content::BrowserThread::PostBlockingPoolTask(FROM_HERE,
  84       base::Bind(
  85           &GeolocationPermissionContextAndroid::CheckSystemLocation,
  86           this, web_contents, info, callback));
  87 }