// Copyright (c) 2000 Microsoft Corporation
//
// multi-line edit box control wrapper
//
// 22 Nov 2000 sburns
//
// added to fix NTRAID#NTBUG9-232092-2000/11/22-sburns



#include "headers.hxx"
#include "MultiLineEditBoxThatForwardsEnterKey.hpp"



MultiLineEditBoxThatForwardsEnterKey::MultiLineEditBoxThatForwardsEnterKey()
{
   LOG_CTOR(MultiLineEditBoxThatForwardsEnterKey);
}



MultiLineEditBoxThatForwardsEnterKey::~MultiLineEditBoxThatForwardsEnterKey()
{
   LOG_DTOR(MultiLineEditBoxThatForwardsEnterKey);
}



HRESULT
MultiLineEditBoxThatForwardsEnterKey::Init(HWND editControl)
{
   LOG_FUNCTION(MultiLineEditBoxThatForwardsEnterKey::Init);

#ifdef DBG
   String className = Win::GetClassName(editControl);
   ASSERT(className == L"Edit" || className == L"RichEdit20W");
#endif   

   HRESULT hr = ControlSubclasser::Init(editControl);

   return hr;
}



LRESULT
MultiLineEditBoxThatForwardsEnterKey::OnMessage(
   UINT   message,
   WPARAM wparam, 
   LPARAM lparam) 
{
   // LOG_FUNCTION(MultiLineEditBoxThatForwardsEnterKey::OnMessage);

   switch (message)
   {
      case WM_KEYDOWN:
      {
		  switch (wparam)
         {
            case VK_RETURN:
            {
               // Send the parent window a WM_COMMAND message with IDOK as
               // the notification code.
               
               Win::SendMessage(
                  Win::GetParent(hwnd),
                  WM_COMMAND,
                  MAKELONG(::GetDlgCtrlID(hwnd), FORWARDED_ENTER),
                  reinterpret_cast<LPARAM>(hwnd));
               break;
            }
            default:
            {
               // do nothing

               break;
            }
         }

         break;
      }
      case EM_SETSEL:
      {
         // If just so happens that when the control gets focus, it selects
         // all of its text. When it does this, instead of passing -1 as
         // the LPARAM, it passes 7fffffff. Since we hate that full select
         // behavior, and ES_NOHIDESEL doesn't appear to affect it, we detect
         // it and snuff the message.
         // NTRAID#NTBUG9-498571-2001/11/21-sburns
         
         if ((wparam == 0) && ((int) lparam == 0x7fffffff))
         {
            // eat the message.
            
            return 0;
         }
         break;
      }
      default:
      {
         // do nothing

         break;
      }
   }

   return ControlSubclasser::OnMessage(message, wparam, lparam);
}