Issue #1186 - Change names that appear in the custom action

installer/src/custom-action/close_application.cpp

 /**
  * \file close_application.cpp
  */
 
 #include <algorithm>
 
 #include "session.h"
 #include "property.h"
 #include "database.h"
 #include "process.h"
 #include "interaction.h"
 #include "custom-i18n.h"
 
-const wchar_t * ie_names[] = { L"IExplore.exe" } ;
-const wchar_t * engine_names[] = { L"AdblockPlusEngine.exe" } ;
+const wchar_t * browserNames[] = { L"IExplore.exe" } ;
+const wchar_t * engineNames[] = { L"AdblockPlusEngine.exe" } ;
 
 //-------------------------------------------------------
 //-------------------------------------------------------
-class IE_Closer
+class InternetExplorerCloser
 {
-  Process_Snapshot snapshot ;
+  ProcessSnapshot snapshot ;
 
-  Process_Closer ie_closer ;
+  ProcessCloser browserCloser ;
 
-  Process_Closer engine_closer ;
+  ProcessCloser engineCloser ;
 
 public:
-  IE_Closer()
-    : snapshot(), ie_closer( snapshot, ie_names), engine_closer( snapshot, engine_names )
+  InternetExplorerCloser()
+    : snapshot(), browserCloser( snapshot, browserNames ), engineCloser( snapshot, engineNames )
   {}
 
   void refresh()
   {
     snapshot.refresh() ;
-    ie_closer.refresh() ;
-    engine_closer.refresh() ;
+    browserCloser.refresh() ;
+    engineCloser.refresh() ;
   }
 
-  bool is_running()
+  bool IsRunning()
   {
-    return ie_closer.is_running() || engine_closer.is_running() ;
+    return browserCloser.IsRunning() || engineCloser.IsRunning() ;
   }
 
-  bool shut_down()
+  bool shutDown()
   {
-    if ( ie_closer.is_running() && ! ie_closer.shut_down() )
+    if ( browserCloser.IsRunning() && ! browserCloser.shutDown() )
     {
       // Assert IE is still running
       // This is after we've tried to shut it down, so we fail
       return false ;
     }
-    if ( engine_closer.is_running() && ! engine_closer.shut_down() )
+    if ( engineCloser.IsRunning() && ! engineCloser.shutDown() )
     {
       // Assert the engine is still running
       // This is after IE has shut down itself and after we've tried to shut down the engine. Whatever.
       return false ;
     }
     return true ;
   }
 } ;
 
 
 //-------------------------------------------------------
-// abp_close_ie
+// AbpCloseIe
 //-------------------------------------------------------
 /**
  * Exposed DLL entry point for custom action. 
  * The function signature matches the calling convention used by Windows Installer.
  *
  * This function supports four policy stances with respect to a running IE process.
  *
  * - Allow reboot. 
  *   IE is running, so what? I'm willing to reboot after installation.
  * - Avoid reboot passively. 
  *   I don't want to affect any other running processes, but I don't want to reboot. I'll abort the installation.
  * - Avoid reboot actively. 
  *   I want to shut down IE in order to avoid a reboot.
  *   I'll do it manually when the time is right.
  * - Avoid reboot automatically. 
  *   I want to shut down IE automatically in order to avoid a reboot. 
  *
  * In a silent installation, the default stance is "allow reboot", which is to say, to act like most installers.
  * In an interactive installation, the stance is gathered from the user through dialog boxes.
  * If the MSI property AVOIDREBOOT is set to one of the values NO, PASSIVE, ACTIVE, or AUTOMATIC, the policy is set accordingly.
  * In a silent installation, this is the only way getting a stance other than the default.
  * In an interactive installation, AVOIDREBOOT skips the dialogs.
  *
- * \param[in] session_handle
+ * \param[in] sessionHandle
  *     Windows installer session handle
  *
  * \return 
  *    An integer interpreted as a custom action return value.
  *   
  * \post
  *   + The return value is one of the following:
  *     - ERROR_INSTALL_USEREXIT if the user cancelled installation.
  *     - ERROR_INSTALL_FAILURE if something unexpected happened, usually if the top level try-block caught an exception.
  *     - ERROR_SUCCESS otherwise.
  *   + The function performed at least one check that Internet Explorer was running.
  *   + If ERROR_SUCCESS, the MSI property RUNNINGBROWSER is set and has one of the following values:
  *     - 1 if Internet Explorer was running upon the last check.
  *     - 0 otherwise.
  * \post
  *   Note that this function cannot provide any assurance that Internet Explorer stays either stays running or stays not running.
  *
  * \sa
  *   - MSDN [Custom Action Return Values](http://msdn.microsoft.com/en-us/library/aa368072%28v=vs.85%29.aspx)
  */
 extern "C" UINT __stdcall 
-abp_close_ie( MSIHANDLE session_handle )
+AbpCloseIe( MSIHANDLE sessionHandle )
 {
   // Utility typedef to shorten the class name.
-  typedef Installer_Message_Box IMB ;
+  typedef InstallerMessageBox IMB ;
 
   /*
-   * Immediate_Session cannot throw, so it can go outside the try-block.
+   * ImmediateSession cannot throw, so it can go outside the try-block.
    * It's needed in the catch-all block to write an error message to the log.
    */
-  Immediate_Session session( session_handle, "abp_close_ie" ) ;
+  ImmediateSession session( sessionHandle, "AbpCloseIe" ) ;
     
   // The body of an entry point function must have a catch-all.
   try {
 
     // MSI property BROWSERRUNNING is one of the return values of this function.
-    Property browser_running( session, L"BROWSERRUNNING" ) ;
-    Property browser_closed( session, L"BROWSERCLOSED" ) ;
+    Property browserRunning( session, L"BROWSERRUNNING" ) ;
+    Property browserClosed( session, L"BROWSERCLOSED" ) ;
 
-    // Instantiation of Process_Closer takes a snapshot.
-    IE_Closer iec ;
+    // Instantiation of ProcessCloser takes a snapshot.
+    InternetExplorerCloser iec ;
 
     /*
      * We take the short path through this function if neither IE nor engine is not running at the outset.
      */
-    if ( ! iec.is_running() )
+    if ( ! iec.IsRunning() )
     {
-      browser_running = L"0" ;      // The browser is not running.
-      browser_closed = L"0" ;       // We didn't close the browser (and we couldn't have).
+      browserRunning = L"0" ;       // The browser is not running.
+      browserClosed = L"0" ;        // We didn't close the browser (and we couldn't have).
       session.log( "IE not running. No issue with reboot policy." ) ;
       return ERROR_SUCCESS ;
     }
 
     /*
      * As a (potentially) user-driven function, a state machine manages control flow.
      * The states are organized around the policy stances.
      */
-    enum Policy_State {
+    enum PolicyState {
       // Non-terminal states
-      not_known,          // We don't know the user's stance at all
-      part_known,         // The user has indicated either ACTIVE or AUTOMATIC
+      notKnown,   // We don't know the user's stance at all
+      partKnown,          // The user has indicated either ACTIVE or AUTOMATIC
       active,             // Actively avoid reboot
       automatic,          // Automatically avoid reboot
       // Terminal states
       success,
       abort,
       // Aliases for what would ordinarily be non-terminal states.
       // They're terminal because of implementation details.
       allow = success,    // Allow reboot. 
       passive = abort,    // Passively avoid reboot, that is, don't try to close IE.
     };
-    Policy_State state ;
+    PolicyState state ;
 
     /*
      * Use the AVOIDREBOOT property, if present, to set an initial state.
      */
-    std::wstring avoid_reboot = Property( session, L"AVOIDREBOOT" ) ;
-    std::transform( avoid_reboot.begin(), avoid_reboot.end(), avoid_reboot.begin(), ::towupper ) ;
-    if ( avoid_reboot == L"" )
+    std::wstring avoidReboot = Property( session, L"AVOIDREBOOT" ) ;
+    std::transform( avoidReboot.begin(), avoidReboot.end(), avoidReboot.begin(), ::towupper ) ;
+    if ( avoidReboot == L"" )
     {
-      state = not_known ;
+      state = notKnown ;
     }
-    else if ( avoid_reboot == L"NO" )
+    else if ( avoidReboot == L"NO" )
     {
       state = allow ;
       session.log( "Reboot allowed on command line." ) ;
     }
-    else if ( avoid_reboot == L"PASSIVE" )
+    else if ( avoidReboot == L"PASSIVE" )
     {
       state = passive ;
       session.log( "Reboot avoided on command line." ) ;
     }
-    else if ( avoid_reboot == L"ACTIVE" )
+    else if ( avoidReboot == L"ACTIVE" )
     {
       state = active ;
     }
-    else if ( avoid_reboot == L"AUTOMATIC" )
+    else if ( avoidReboot == L"AUTOMATIC" )
     {
       state = automatic ;
     }
     else
     {
       // It's an error to specify an unrecognized value for AVOIDREBOOT.
       throw std::runtime_error( "unrecognized value for AVOIDREBOOT" ) ;
     }
 
     /*
      * When running as an update (see Updater.cpp), this installer receives the command line option "/qb",
      *   which sets the UI level to "Basic UI".
      * When running as an initial install, we cannot expect what command line options this installer receives.
      */
     /*
      * The UILevel property indicates whether we have the ability to put dialog boxes up.
      * Levels 2 (silent) and 3 (basic) do not have this ability.
      * Levels 4 (reduced) and 5 (full) do.
      *
      * MSDN [UILevel property](http://msdn.microsoft.com/en-us/library/windows/desktop/aa372096%28v=vs.85%29.aspx)
      */
     std::wstring uilevel = Property( session, L"UILevel" ) ;
     bool interactive ;
     if ( uilevel == L"5" || uilevel == L"4" )
     {
       interactive = true ;
-      // Assert state is one of { not_known, allow, passive, active, automatic }
+      // Assert state is one of { notKnown, allow, passive, active, automatic }
     }
     else if ( uilevel == L"3" || uilevel == L"2" )
     {
       // Assert installer is running without user interaction.
       interactive = false ;
-      if ( state == not_known )
+      if ( state == notKnown )
       {
         // Assert AVOIDREBOOT was not specified
         /*
          * This is where we specify default behavior for non-interactive operation.
          * The choice of "allow" makes it act like other installers, which is to make no effort to avoid a reboot after installation.
          */
         state = allow ;
         session.log( "Reboot allowed by default in non-interactive session." ) ;
       }
       else if ( state == active )
       {
         throw std::runtime_error( "AVOIDREBOOT=ACTIVE in non-interative session is not consistent" ) ;
       }
       // Assert state is one of { allow, passive, automatic }
     }
     else
     {
       throw std::runtime_error( "unrecognized value for UILevel" ) ;
     }
 
     /*
      * Now that preliminaries are over, we set up the accessors for UI text.
-     * We only use the object 'message_text' for interactive sessions, but it's cheap to set up and a hassle to conditionalize.
+     * We only use the object 'messageText' for interactive sessions, but it's cheap to set up and a hassle to conditionalize.
      *
      * The key "close_ie" is the component name within the file "close_ie.wxi" that defines rows in the localization table.
-     * The identifiers for the message_text.text() function are defined within that file.
+     * The identifiers for the messageText.text() function are defined within that file.
      */
-    Installation_Database db( session ) ;
-    custom_message_text message_text( db, L"close_ie" ) ;
+    InstallationDatabase db( session ) ;
+    CustomMessageText messageText( db, L"close_ie" ) ;
 
     /*
      * State machine: Loop through non-terminal states.
      *
-     * Loop invariant: IE was running at last check, that is, iec.is_running() would return true.
+     * Loop invariant: IE was running at last check, that is, iec.IsRunning() would return true.
      */
     while ( state <= automatic )          // "automatic" is the non-terminal state with the highest value
     {
       switch ( state )
       {
-      case not_known:
+      case notKnown:
         /*
          * Precondition: interactive session
          *
          * Ask the user "Would you like to close IE and avoid reboot?"
-         * Yes -> Close IE somehow. Goto part_known.
+         * Yes -> Close IE somehow. Goto partKnown.
          * No -> Install with reboot. Goto allow.
          * Cancel -> terminate installation. Goto abort.
          */
-        {
-          int x = session.write_message( IMB( message_text.text( L"dialog_unknown" ), IMB::warning_box, IMB::yes_no_cancel, IMB::default_button_three ) ) ;
+        {
+          int x = session.WriteMessage(IMB( 
+            messageText.text(L"dialog_unknown"), 
+            IMB::Box::warning, IMB::ButtonSet::yesNoCancel, IMB::DefaultButton::three
+            )) ;
           switch ( x )
           {
           case IDYES:
-            state = part_known ;
+            state = partKnown ;
             break ;
           case IDNO:
             state = allow ;
             session.log( "User chose to allow reboot" ) ;
             break ;
           case IDCANCEL:
             state = abort ;
             session.log( "User cancelled installation" ) ;
             break ;
           default:
-            throw unexpected_return_value_from_message_box() ;
+            throw UnexpectedReturnValueFromMessageBox() ;
           }
         }
         break ;
 
-      case part_known:
+      case partKnown:
         /*
          * Precondition: interactive session
          *
          * Ask the user "Would you like the installer to close IE for you?"
          * Yes -> Goto automatic
          * No -> Goto active
-         * Cancel -> Goto not_known
+         * Cancel -> Goto notKnown
          */
         {
-          int x = session.write_message( IMB( message_text.text( L"dialog_part_known" ), IMB::warning_box, IMB::yes_no_cancel, IMB::default_button_three ) ) ;
+          int x = session.WriteMessage(IMB(
+            messageText.text(L"dialog_part_known"), 
+            IMB::Box::warning, IMB::ButtonSet::yesNoCancel, IMB::DefaultButton::three
+            )) ;
           switch ( x )
           {
           case IDYES:
             state = automatic ;
             break ;
           case IDNO:
             state = active ;
             break ;
           case IDCANCEL:
-            state = not_known ;
+            state = notKnown ;
             break ;
           default:
-            throw unexpected_return_value_from_message_box() ;
+            throw UnexpectedReturnValueFromMessageBox() ;
           }
         }
         break ;
 
       case active:
         /*
          * Precondition: interactive session
          *
          * IE is no longer running -> Goto success
          * IE is still running ->
          *   Ask the user to close IE manually
          *   OK -> re-enter this state
-         *   Cancel -> Goto not_known
+         *   Cancel -> Goto notKnown
          */
         {
-          int x = session.write_message( IMB( message_text.text( L"dialog_active_retry" ), IMB::warning_box, IMB::ok_cancel, IMB::default_button_one ) ) ;
+          int x = session.WriteMessage(IMB(
+            messageText.text(L"dialog_active_retry"), 
+            IMB::Box::warning, IMB::ButtonSet::okCancel, IMB::DefaultButton::one
+            )) ;
           switch ( x )
           {
           case IDOK:
             /*
              * Refresh our knowledge of whether IE is running.
              * If it is, we display the dialog again. The state doesn't change, so we just iterate again.
              * If it's not, then the user has closed IE and we're done.
              */
             iec.refresh() ;
-            if ( ! iec.is_running() )
+            if ( ! iec.IsRunning() )
             {
               state = success ;
               session.log( "User shut down IE manually." ) ;
             }
             break ;
           case IDCANCEL:
-            state = not_known ;
+            state = notKnown ;
             break ;
           default:
-            throw unexpected_return_value_from_message_box() ;
+            throw UnexpectedReturnValueFromMessageBox() ;
           }
         }
         break ;
 
       case automatic:
         /*
          * Close all known IE instances.
          * Unlike other cases, this state starts with an action and not a user query.
          * We first shut down IE, or at least attempt to.
          *
          * Succeeded -> Goto success
          * Failed && interactive ->
          *   Ask user if they would like to try again
          *   Retry -> re-enter this state
-         *   Cancel -> Goto not_known
+         *   Cancel -> Goto notKnown
          * Failed && not interactive -> Goto abort
          */
         {
-          bool IE_was_closed = iec.shut_down() ;
-          if ( iec.is_running() )
+          bool ieWasClosed = iec.shutDown() ;
+          if ( iec.IsRunning() )
           {
             session.log( "Attempt to shut down IE automatically failed." ) ;
             if ( interactive )
             {
               // Assert Interactive session and IE did not shut down.
-              int x = session.write_message( IMB( message_text.text( L"dialog_automatic_retry" ), IMB::warning_box, IMB::retry_cancel, IMB::default_button_one ) ) ;
+              int x = session.WriteMessage(IMB(
+                messageText.text(L"dialog_automatic_retry"),
+                IMB::Box::warning, IMB::ButtonSet::retryCancel, IMB::DefaultButton::one
+                )) ;
               switch ( x )
               {
               case IDRETRY:
                 // Don't change the state. Iterate again.
                 break ;
               case IDCANCEL:
-                state = not_known ;
+                state = notKnown ;
                 break ;
               default:
-                throw unexpected_return_value_from_message_box() ;
+                throw UnexpectedReturnValueFromMessageBox() ;
               }
             }
             else
             {
               // Assert Non-interactive session and IE did not shut down.
               state = abort ;
               session.log( "Failed to shut down IE automatically." ) ;
             }
           }
           else
           {
-            // Assert IE is not running, so shut_down() succeeded.
+            // Assert IE is not running, so shutDown() succeeded.
             state = success ;
             session.log( "Automatically shut down IE." ) ;
           }
         }
         break;
       }
     }
     /*
      * State machine: Actions for terminal states.
      */
     switch ( state )
     {
       case success:
-        if ( iec.is_running() )
+        if ( iec.IsRunning() )
         {
-          browser_running = L"1" ;
-          browser_closed = L"0" ;
+          browserRunning = L"1" ;
+          browserClosed = L"0" ;
         }
         else
         {
-          browser_running = L"0" ;
-          browser_closed = L"1" ;
+          browserRunning = L"0" ;
+          browserClosed = L"1" ;
         }
         return ERROR_SUCCESS ;
         break;
       case abort:
         return ERROR_INSTALL_USEREXIT ;
         break;
     }
   }
   catch( std::exception & e )
   {
-    session.log_noexcept( "terminated by exception: " + std::string( e.what() ) ) ;
+    session.LogNoexcept( "terminated by exception: " + std::string( e.what() ) ) ;
     return ERROR_INSTALL_FAILURE ;
   }
   catch( ... )
   {
-    session.log_noexcept( "terminated by unknown exception" ) ;
+    session.LogNoexcept( "terminated by unknown exception" ) ;
     return ERROR_INSTALL_FAILURE ;
   }
   // Should be unreachable.
   return ERROR_INSTALL_FAILURE ;
 }
-
-/*
- * EnumWindows system call: http://msdn.microsoft.com/en-us/library/windows/desktop/ms633497%28v=vs.85%29.aspx
- */
-/**
- * 
- * Callback function for EnumWindows.
- */
-BOOL CALLBACK EnumWindowsProc(HWND hwnd, LPARAM lParam)
-{
-  return TRUE ;
-}
-
-/**
- * Windows_List
- */
-class Window_List {
-public:
-  void enumerate_top_level();
-};