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 #ifndef CHROME_BROWSER_GEOLOCATION_GEOLOCATION_PERMISSION_CONTEXT_ANDROID_H_ 6 #define CHROME_BROWSER_GEOLOCATION_GEOLOCATION_PERMISSION_CONTEXT_ANDROID_H_ 7 8 // The flow for geolocation permissions on Android needs to take into account 9 // the global geolocation settings so it differs from the desktop one. It 10 // works as follows. 11 // GeolocationPermissionContextAndroid::DecidePermission intercepts the flow in 12 // the UI thread, and posts a task to the blocking pool to CheckSystemLocation. 13 // CheckSystemLocation will in fact check several possible settings 14 // - The global system geolocation setting 15 // - The Google location settings on pre KK devices 16 // - An old internal Chrome setting on pre-JB MR1 devices 17 // With all that information it will decide if system location is enabled. 18 // If enabled, it proceeds with the per site flow via 19 // GeolocationPermissionContext (which will check per site permissions, create 20 // infobars, etc.). 21 // 22 // Otherwise the permission is already decided. 23 24 // There is a bit of thread jumping since some of the permissions (like the 25 // per site settings) are queried on the UI thread while the system level 26 // permissions are considered I/O and thus checked in the blocking thread pool. 27 28 #include "chrome/browser/geolocation/geolocation_permission_context.h" 29 #include "components/content_settings/core/common/permission_request_id.h" 30 #include "url/gurl.h" 31 32 namespace content { 33 class WebContents; 34 } 35 36 class GoogleLocationSettingsHelper; 37 38 39 class GeolocationPermissionContextAndroid 40 : public GeolocationPermissionContext { 41 public: 42 explicit GeolocationPermissionContextAndroid(Profile* profile); 43 44 private: 45 struct PermissionRequestInfo { 46 PermissionRequestInfo(); 47 48 PermissionRequestID id; 49 GURL requesting_frame; 50 bool user_gesture; 51 GURL embedder; 52 }; 53 54 friend class GeolocationPermissionContext; 55 56 virtual ~GeolocationPermissionContextAndroid(); 57 58 // GeolocationPermissionContext implementation: 59 virtual void DecidePermission(content::WebContents* web_contents, 60 const PermissionRequestID& id, 61 const GURL& requesting_frame, 62 bool user_gesture, 63 const GURL& embedder, 64 base::Callback<void(bool)> callback) OVERRIDE; 65 66 void ProceedDecidePermission(content::WebContents* web_contents, 67 const PermissionRequestInfo& info, 68 base::Callback<void(bool)> callback); 69 70 scoped_ptr<GoogleLocationSettingsHelper> google_location_settings_helper_; 71 72 private: 73 void CheckSystemLocation(content::WebContents* web_contents, 74 const PermissionRequestInfo& info, 75 base::Callback<void(bool)> callback); 76 77 DISALLOW_COPY_AND_ASSIGN(GeolocationPermissionContextAndroid); 78 }; 79 80 #endif // CHROME_BROWSER_GEOLOCATION_GEOLOCATION_PERMISSION_CONTEXT_ANDROID_H_ 81