// VisualBoyAdvance - Nintendo Gameboy/GameboyAdvance (TM) emulator.
// Copyright (C) 1999-2003 Forgotten
// Copyright (C) 2004 Forgotten and the VBA development team

// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or(at your option)
// any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation,
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

// AccelEditor.cpp : implementation file
//

#include "stdafx.h"
#include "vba.h"
#include "AccelEditor.h"
#include "CmdAccelOb.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// AccelEditor dialog


AccelEditor::AccelEditor(CWnd* pParent /*=NULL*/)
  : ResizeDlg(AccelEditor::IDD, pParent)
{
  //{{AFX_DATA_INIT(AccelEditor)
  // NOTE: the ClassWizard will add member initialization here
  //}}AFX_DATA_INIT
  mgr = theApp.winAccelMgr;
}


void AccelEditor::DoDataExchange(CDataExchange* pDX)
{
  CDialog::DoDataExchange(pDX);
  //{{AFX_DATA_MAP(AccelEditor)
  DDX_Control(pDX, IDC_CURRENTS, m_currents);
  DDX_Control(pDX, IDC_ALREADY_AFFECTED, m_alreadyAffected);
  DDX_Control(pDX, IDC_COMMANDS, m_commands);
  DDX_Control(pDX, IDC_EDIT_KEY, m_key);
  //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(AccelEditor, CDialog)
  //{{AFX_MSG_MAP(AccelEditor)
  ON_BN_CLICKED(ID_OK, OnOk)
  ON_LBN_SELCHANGE(IDC_COMMANDS, OnSelchangeCommands)
  ON_BN_CLICKED(IDC_RESET, OnReset)
  ON_BN_CLICKED(IDC_ASSIGN, OnAssign)
  ON_BN_CLICKED(ID_CANCEL, OnCancel)
  ON_BN_CLICKED(IDC_REMOVE, OnRemove)
  //}}AFX_MSG_MAP
  END_MESSAGE_MAP()

  /////////////////////////////////////////////////////////////////////////////
// AccelEditor message handlers

BOOL AccelEditor::OnInitDialog() 
{
  CDialog::OnInitDialog();
  
  DIALOG_SIZER_START( sz )
    DIALOG_SIZER_ENTRY( IDC_STATIC1, DS_MoveX)
    DIALOG_SIZER_ENTRY( IDC_STATIC2, DS_MoveY)
    DIALOG_SIZER_ENTRY( IDC_STATIC3, DS_MoveX | DS_MoveY)
    DIALOG_SIZER_ENTRY( IDC_ALREADY_AFFECTED, DS_MoveY)
    DIALOG_SIZER_ENTRY( ID_OK, DS_MoveX)
    DIALOG_SIZER_ENTRY( ID_CANCEL, DS_MoveX)
    DIALOG_SIZER_ENTRY( IDC_ASSIGN, DS_MoveX)
    DIALOG_SIZER_ENTRY( IDC_REMOVE, DS_MoveX)
    DIALOG_SIZER_ENTRY( IDC_RESET, DS_MoveX)
    DIALOG_SIZER_ENTRY( IDC_CLOSE, DS_MoveY)
    DIALOG_SIZER_ENTRY( IDC_COMMANDS, DS_SizeX | DS_SizeY)
    DIALOG_SIZER_ENTRY( IDC_CURRENTS, DS_MoveX | DS_SizeY)
    DIALOG_SIZER_ENTRY( IDC_EDIT_KEY, DS_MoveX | DS_MoveY)
    DIALOG_SIZER_END()

    SetData(sz,
            TRUE,
            HKEY_CURRENT_USER,
            "Software\\Emulators\\VisualBoyAdvance\\Viewer\\AccelEditor",
            NULL);

  InitCommands();
  
  return TRUE;  // return TRUE unless you set the focus to a control
                // EXCEPTION: OCX Property Pages should return FALSE
}

void AccelEditor::InitCommands()
{
  m_commands.ResetContent();
  m_alreadyAffected.SetWindowText("");

  POSITION pos = mgr.m_mapAccelString.GetStartPosition();
  
  while(pos != NULL) {
    CString command;
    WORD wID;
    mgr.m_mapAccelString.GetNextAssoc(pos, command, wID);

    int index = m_commands.AddString(command);
    m_commands.SetItemData(index, wID);
  }

  // Update the currents accels associated with the selected command
  if (m_commands.SetCurSel(0) != LB_ERR)
    OnSelchangeCommands();
}

void AccelEditor::OnCancel() 
{
  EndDialog(FALSE);
}

void AccelEditor::OnOk() 
{
  EndDialog(TRUE);
}

void AccelEditor::OnSelchangeCommands() 
{
  // Check if some commands exist.
  int index = m_commands.GetCurSel();
  if (index == LB_ERR)
    return;

  WORD wIDCommand = LOWORD(m_commands.GetItemData(index));
  m_currents.ResetContent();

  CCmdAccelOb* pCmdAccel;
  
  if (mgr.m_mapAccelTable.Lookup(wIDCommand, pCmdAccel)) {
    CAccelsOb* pAccel;
    CString szBuffer;
    POSITION pos = pCmdAccel->m_Accels.GetHeadPosition();

    // Add the keys to the 'currents keys' listbox.
    while (pos != NULL) {
      pAccel = pCmdAccel->m_Accels.GetNext(pos);
      pAccel->GetString(szBuffer);
      index = m_currents.AddString(szBuffer);
      // and a pointer to the accel object.
      m_currents.SetItemData(index, (DWORD)pAccel);
    }
  }
  // Init the key editor
  //  m_pKey->ResetKey();

}

void AccelEditor::OnReset() 
{
  mgr.Default();
  InitCommands(); // update the listboxes.
}

void AccelEditor::OnAssign() 
{
  // Control if it's not already affected
  CCmdAccelOb* pCmdAccel;
  CAccelsOb* pAccel;
  WORD wIDCommand;
  POSITION pos;
  
  WORD wKey;
  bool bCtrl, bAlt, bShift;

  if (!m_key.GetAccelKey(wKey, bCtrl, bAlt, bShift))
    return; // no valid key, abort

  int count = m_commands.GetCount();
  for (int index = 0; index < count; index++) {

    wIDCommand = LOWORD(m_commands.GetItemData(index));
    mgr.m_mapAccelTable.Lookup(wIDCommand, pCmdAccel);

    pos = pCmdAccel->m_Accels.GetHeadPosition();
    while (pos != NULL) {
      pAccel = pCmdAccel->m_Accels.GetNext(pos);
      if (pAccel->IsEqual(wKey, bCtrl, bAlt, bShift)) {
        // the key is already affected (in the same or other command)
        m_alreadyAffected.SetWindowText(pCmdAccel->m_szCommand);
        m_key.SetSel(0, -1);
        return; // abort
      }
    }
  }

  // OK, we can add the accel key in the currently selected group
  index = m_commands.GetCurSel();
  if (index == LB_ERR)
    return;

  // Get the object who manage the accels list, associated to the command.
  wIDCommand = LOWORD(m_commands.GetItemData(index));

  if (mgr.m_mapAccelTable.Lookup(wIDCommand, pCmdAccel) != TRUE)
    return;

  BYTE cVirt = 0;
  if (bCtrl)
    cVirt |= FCONTROL;
  if (bAlt)
    cVirt |= FALT;
  if (bShift)
    cVirt |= FSHIFT;

  cVirt |= FVIRTKEY;

  // Create the new key...
  pAccel = new CAccelsOb(cVirt, wKey, false);
  ASSERT(pAccel != NULL);
  // ...and add in the list.
  pCmdAccel->m_Accels.AddTail(pAccel);

  // Update the listbox.
  CString szBuffer;
  pAccel->GetString(szBuffer);

  index = m_currents.AddString(szBuffer);
  m_currents.SetItemData(index, (DWORD)pAccel);

  // Reset the key editor.
  m_key.ResetKey();
}

void AccelEditor::OnRemove() 
{
  // Some controls
  int indexCurrent = m_currents.GetCurSel();
  if (indexCurrent == LB_ERR)
    return;
  
  // 2nd part.
  int indexCmd = m_commands.GetCurSel();
  if (indexCmd == LB_ERR)
    return;

  // Ref to the ID command
  WORD wIDCommand = LOWORD(m_commands.GetItemData(indexCmd));

  // Run through the accels,and control if it can be deleted.
  CCmdAccelOb* pCmdAccel;
  if (mgr.m_mapAccelTable.Lookup(wIDCommand, pCmdAccel) == TRUE) {
    CAccelsOb* pAccel;
    CAccelsOb* pAccelCurrent = (CAccelsOb*)(m_currents.GetItemData(indexCurrent));
    CString szBuffer;
    POSITION pos = pCmdAccel->m_Accels.GetHeadPosition();
    POSITION PrevPos;
    while (pos != NULL) {
      PrevPos = pos;
      pAccel = pCmdAccel->m_Accels.GetNext(pos);
      if (pAccel == pAccelCurrent) {
        if (!pAccel->m_bLocked) {
          // not locked, so we delete the key
          pCmdAccel->m_Accels.RemoveAt(PrevPos);
          delete pAccel;
          // and update the listboxes/key editor/static text
          m_currents.DeleteString(indexCurrent);
          m_key.ResetKey();
          m_alreadyAffected.SetWindowText("");
          return;
        } else {
          systemMessage(0,"Unable to remove this\naccelerator (Locked)");
          return;
        }
      }
    }
    systemMessage(0,"internal error (CAccelDlgHelper::Remove : pAccel unavailable)");
    return;
  }
  systemMessage(0,"internal error (CAccelDlgHelper::Remove : Lookup failed)");
}