historycombo.cpp

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/*
 *  Openmysee
 *
 *  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 of the License, 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
 *
 */
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////

#include "stdafx.h"
#include "HistoryCombo.h"

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

#define MAX_HISTORY_ITEMS 50

/////////////////////////////////////////////////////////////////////////////
// CHistoryCombo

CHistoryCombo::CHistoryCombo(BOOL bAllowSortStyle/*=FALSE*/)
{
  m_nMaxHistoryItems = MAX_HISTORY_ITEMS;
  m_bSaveRestoreLastCurrent = TRUE;
  m_bAllowSortStyle = bAllowSortStyle;
}

CHistoryCombo::~CHistoryCombo()
{
}

BOOL CHistoryCombo::PreCreateWindow(CREATESTRUCT& cs) 
{
  if (! m_bAllowSortStyle)  // turn off CBS_SORT style
    cs.style &= ~CBS_SORT;
  return CComboBox::PreCreateWindow(cs);
}

void CHistoryCombo::PreSubclassWindow() 
{
  // warn if creating with CBS_SORT style
  // (unfortunately we can't turn it off)
  if (! m_bAllowSortStyle && GetStyle() & CBS_SORT)
    TRACE(_T("WARNING: Creating History combo with CBS_SORT style\n"));
  CComboBox::PreSubclassWindow();
}

BEGIN_MESSAGE_MAP(CHistoryCombo, CComboBox)
	//{{AFX_MSG_MAP(CHistoryCombo)
		// NOTE - the ClassWizard will add and remove mapping macros here.
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
 
int CHistoryCombo::AddString(LPCTSTR lpszString)
{
 
  if (m_sSection.IsEmpty() || m_sKeyPrefix.IsEmpty())
    return CComboBox::AddString(lpszString);

  int nRet = -1;
  
  CString sString(lpszString);
  sString.TrimLeft(_T(" "));
  sString.TrimRight(_T(" "));
  nRet = CComboBox::InsertString(0, sString);
  int nIndex = FindStringExact(0, sString);
  if (nIndex != -1 && nIndex != 0)
    DeleteString(nIndex);

  
  int nNumItems = GetCount();
  for (int n = m_nMaxHistoryItems; n < nNumItems; n++)
    DeleteString(m_nMaxHistoryItems);

  SetCurSel(nRet);
  return nRet;
}

CString CHistoryCombo::LoadHistory(CRecentFileList* pListMRU, BOOL bSelectMostRecent/*=TRUE*/)
{
  if (pListMRU == NULL)
    return "";

  int nNumItems = pListMRU->GetSize();
  for (int n = 0; n < nNumItems; n++)
    CComboBox::AddString((*pListMRU)[n]);
  if (bSelectMostRecent)
    SetCurSel(0);
  CString sText;
  GetWindowText(sText);
  return sText;
}


CString CHistoryCombo::LoadHistory(LPCTSTR lpszSection, LPCTSTR lpszKeyPrefix, 
				   BOOL bSaveRestoreLastCurrent/*=TRUE*/, 
				   LPCTSTR lpszKeyCurItem/*=NULL*/)
{
  if (lpszSection == NULL || lpszKeyPrefix == NULL || *lpszSection == '\0')
    return "";

  m_sSection = lpszSection;
  m_sKeyPrefix = lpszKeyPrefix;
  m_sKeyCurItem = lpszKeyCurItem == NULL ? _T("") : lpszKeyCurItem;
  m_bSaveRestoreLastCurrent = bSaveRestoreLastCurrent;
  CWinApp* pApp = AfxGetApp();

  int n = 0;
  CString sText;
  do
  {
    CString sKey;
    sKey.Format(_T("%s%d"), m_sKeyPrefix, n++);
    sText = pApp->GetProfileString(m_sSection, sKey);
    if (!sText.IsEmpty())
      CComboBox::AddString(sText);
  }while (!sText.IsEmpty() && n < m_nMaxHistoryItems);
  if (m_bSaveRestoreLastCurrent)
  {
    CString sKey;
    if (!m_sKeyCurItem.IsEmpty())
      sKey = m_sKeyCurItem;
    else if (m_sKeyPrefix.IsEmpty())
      sKey = "Last";
    else
      sKey = m_sKeyPrefix;
    sText = pApp->GetProfileString(m_sSection, sKey);
    if (!sText.IsEmpty())
    {
      int nIndex = FindStringExact(-1, sText);
      if (nIndex != -1)
	SetCurSel(nIndex);
      else if (GetStyle() & CBS_DROPDOWN)
	SetWindowText(sText);
    }
  }
  return sText;
}

void CHistoryCombo::SaveHistory(BOOL bAddCurrentItemToHistory/*=TRUE*/)
{
  if (m_sSection.IsEmpty())
    return;

  CWinApp* pApp = AfxGetApp();
  ASSERT(pApp);

  if (bAddCurrentItemToHistory)
  {
    CString sCurItem;
    GetWindowText(sCurItem);
    // trim it, so we items which differ only by a leading/trailing space
    sCurItem.TrimLeft();
    sCurItem.TrimRight();
    if (! sCurItem.IsEmpty())
      AddString(sCurItem);
  }

  // save history to info cached earlier
  int nMax = min(GetCount(), m_nMaxHistoryItems + 1);
  for (int n = 0; n < nMax; n++)
  {
    CString sKey;
    sKey.Format(_T("%s%d"), m_sKeyPrefix, n);
    CString sText;
    GetLBText(n, sText);
    pApp->WriteProfileString(m_sSection, sKey, sText);
  }

  for (n = nMax; n < 1000/* prevent runaway*/; n++)
  {
    CString sKey;
    sKey.Format(_T("%s%d"), m_sKeyPrefix, n);
    CString sText = pApp->GetProfileString(m_sSection, sKey);
    if (sText.IsEmpty())
      break;
    pApp->WriteProfileString(m_sSection, sKey, NULL); // remove entry
  }
  if (m_bSaveRestoreLastCurrent)
  {
    CString sText;
    GetWindowText(sText);
    CString sKey;
    if (!m_sKeyCurItem.IsEmpty())
      sKey = m_sKeyCurItem;
    else if (m_sKeyPrefix.IsEmpty())
      sKey = "Last";
    else
      sKey = m_sKeyPrefix;
    pApp->WriteProfileString(m_sSection, sKey, sText);
  }
}


void CHistoryCombo::ClearHistory(BOOL bDeleteRegistryEntries/*=TRUE*/)
{
  ResetContent();
  if (! m_sSection.IsEmpty() && bDeleteRegistryEntries)
  {
    // remove profile entries
    CWinApp* pApp = AfxGetApp();
    ASSERT(pApp);
    CString sKey;
    for (int n = 0; n < 1000/* prevent runaway*/; n++)
    {
      sKey.Format(_T("%s%d"), m_sKeyPrefix, n);
      CString sText = pApp->GetProfileString(m_sSection, sKey);
      if (sText.IsEmpty())
	break;
      pApp->WriteProfileString(m_sSection, sKey, NULL); // remove entry
    }
    if (! m_sKeyCurItem.IsEmpty())
      sKey = m_sKeyCurItem;
    else if (m_sKeyPrefix.IsEmpty())
      sKey = "Last";
    else
      sKey = m_sKeyPrefix;
    pApp->WriteProfileString(m_sSection, sKey, NULL);
  }
}

void CHistoryCombo::SetMaxHistoryItems(int nMaxItems)
{
  m_nMaxHistoryItems = nMaxItems;


  int nNumItems = GetCount();
  for (int n = m_nMaxHistoryItems; n < nNumItems; n++)
    DeleteString(m_nMaxHistoryItems);
}

void CHistoryCombo::StoreValue(BOOL bIgnoreIfEmpty/*=TRUE*/)
{
  
  CString sValue;
  GetWindowText(sValue);
  if (bIgnoreIfEmpty && sValue.IsEmpty())
    return;
  AddString(sValue);
}