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      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 #ifndef CHROME_BROWSER_SEARCH_ENGINES_SEARCH_PROVIDER_INSTALL_STATE_MESSAGE_FILTER_H_
      6 #define CHROME_BROWSER_SEARCH_ENGINES_SEARCH_PROVIDER_INSTALL_STATE_MESSAGE_FILTER_H_
      7 
      8 #include "base/memory/weak_ptr.h"
      9 #include "chrome/browser/search_engines/search_provider_install_data.h"
     10 #include "chrome/common/search_provider.h"
     11 #include "content/public/browser/browser_message_filter.h"
     12 
     13 class GURL;
     14 class Profile;
     15 
     16 // Handles messages regarding search provider install state on the I/O thread.
     17 class SearchProviderInstallStateMessageFilter
     18     : public content::BrowserMessageFilter {
     19  public:
     20   // Unlike the other methods, the constructor is called on the UI thread.
     21   SearchProviderInstallStateMessageFilter(int render_process_id,
     22                                           Profile* profile);
     23 
     24   // content::BrowserMessageFilter implementation.
     25   virtual bool OnMessageReceived(const IPC::Message& message,
     26                                  bool* message_was_ok) OVERRIDE;
     27 
     28  private:
     29   virtual ~SearchProviderInstallStateMessageFilter();
     30 
     31   // Figures out the install state for the search provider.
     32    search_provider::InstallState GetSearchProviderInstallState(
     33       const GURL& page_location,
     34       const GURL& requested_host);
     35 
     36   // Starts handling the message requesting the search provider install state.
     37   void OnGetSearchProviderInstallState(const GURL& page_location,
     38                                        const GURL& requested_host,
     39                                        IPC::Message* reply_msg);
     40 
     41   // Sends the reply message about the search provider install state.
     42   void ReplyWithProviderInstallState(const GURL& page_location,
     43                                      const GURL& requested_host,
     44                                      IPC::Message* reply_msg);
     45 
     46   // Used to schedule invocations of ReplyWithProviderInstallState.
     47   base::WeakPtrFactory<SearchProviderInstallStateMessageFilter> weak_factory_;
     48 
     49   // Used to do a load and get information about install states.
     50   SearchProviderInstallData provider_data_;
     51 
     52   // Copied from the profile since the profile can't be accessed on the I/O
     53   // thread.
     54   const bool is_off_the_record_;
     55 
     56   DISALLOW_COPY_AND_ASSIGN(SearchProviderInstallStateMessageFilter);
     57 };
     58 
     59 #endif  // CHROME_BROWSER_SEARCH_ENGINES_SEARCH_PROVIDER_INSTALL_STATE_MESSAGE_FILTER_H_
     60