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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_UI_METRO_DRIVER_CHROME_URL_LAUNCH_HANDLER_H_
      6 #define CHROME_BROWSER_UI_METRO_DRIVER_CHROME_URL_LAUNCH_HANDLER_H_
      7 
      8 #include <string>
      9 #include <windows.applicationmodel.core.h>
     10 #include <Windows.applicationModel.search.h>
     11 #include <windows.ui.core.h>
     12 
     13 #include "winrt_utils.h"
     14 
     15 // This class handles the various flavors of URL launches in metro, i.e.
     16 // via the search charm, via a url being navigated from a metro app, etc.
     17 class ChromeUrlLaunchHandler {
     18  public:
     19   ChromeUrlLaunchHandler();
     20   ~ChromeUrlLaunchHandler();
     21 
     22   HRESULT Initialize();
     23 
     24   // If metro chrome was launched due to a URL navigation/search request then
     25   // the navigation should be done when the frame window is initialized. This
     26   // function is called to complete the pending navigation when we receive a
     27   // notification from chrome that the frame window is initialized.
     28   void PerformPendingNavigation();
     29 
     30   void Activate(winapp::Activation::IActivatedEventArgs* args);
     31 
     32  private:
     33   // Invoked when we receive search notifications in metro chrome.
     34   template<class T> void HandleSearchRequest(T* args);
     35 
     36   HRESULT OnQuerySubmitted(
     37       winapp::Search::ISearchPane* search_pane,
     38       winapp::Search::ISearchPaneQuerySubmittedEventArgs* args);
     39 
     40   string16 GetUrlFromLaunchArgs(const string16& launch_args);
     41 
     42   // Invoked when a url is navigated from a metro app or in the metro
     43   // shelf.
     44   void HandleProtocolLaunch(
     45       winapp::Activation::IProtocolActivatedEventArgs* args);
     46 
     47   // Invoked when the app is launched normally
     48   void HandleLaunch(winapp::Activation::ILaunchActivatedEventArgs* args);
     49 
     50   // Helper function to initiate a navigation or search request in chrome.
     51   void InitiateNavigationOrSearchRequest(const wchar_t* url,
     52                                          const wchar_t* search_string);
     53 
     54   Microsoft::WRL::ComPtr<winapp::Search::ISearchPane> search_pane_;
     55   EventRegistrationToken query_submitted_token_;
     56 };
     57 
     58 #endif  // CHROME_BROWSER_UI_METRO_DRIVER_CHROME_URL_LAUNCH_HANDLER_H_
     59