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//===============================================================
// vcomboc.cxx - vComboBoxCmd - Windows
//
// Copyright (C) 1995,1996, 1997, 1998 Bruce E. Wampler
//
// This file is part of the V C++ GUI Framework, and is covered
// under the terms of the GNU Library General Public License,
// Version 2. This library has NO WARRANTY. See the source file
// vapp.cxx for more complete information about license terms.
//===============================================================
#include <v/vwin32.h> // for Win 32 stuff
#include <v/vcomboc.h> // our definitions
#include <v/vcmdprnt.h> // a command parent
#include <v/vapp.h>
#include <v/vutil.h>
//=================>>> vComboBoxCmd::vComboBoxCmd <<<=======================
vComboBoxCmd::vComboBoxCmd(vCmdParent* dp, CommandObject* dc) :
vCmd(dp, dc)
{
SysDebug(Constructor,"vComboBoxCmd::vComboBoxCmd() constructor\n")
CopyToLocal(); // Make local copies of CmdObject
// First, setup the list
_maxWidth = 10;
SetupComboList();
_maxWidth = (dlgCmd->attrs & CA_Large) ? (_maxWidth * 3)/2
: _maxWidth;
long style = (_parentWin->_dialogType != aCmdBar)
? WS_TABSTOP | WS_GROUP
: WS_GROUP;
if (!(dlgCmd->attrs & CA_Hidden)) // Check for Hidden
style |= WS_VISIBLE;
style |= CBS_DROPDOWNLIST | CBS_HASSTRINGS | WS_VSCROLL;
_w = _maxWidth*4+10; // set my width
_h = 14; // 14 is std height for combo without list
_parentWin->SetPosition(_x, _y, _w, _h, dlgCmd->cFrame, dlgCmd->cRightOf,
dlgCmd->cBelow);
_CtrlOffset = _parentWin->AddDlgControl(_x, _y, _w, _h, _cmdId,
style, "COMBOBOX", _title, sizeof(vCmd*), (LPBYTE)this);
}
//=======================>>> vComboBoxCmd::~vComboBoxCmd <<<=======================
vComboBoxCmd::~vComboBoxCmd()
{
SysDebug(Constructor,"vComboBoxCmd::~vComboBoxCmd() Constructor\n")
}
//==================>>> vComboBoxCmd::GetCmdValue <<<=========================
int vComboBoxCmd::GetCmdValue(ItemVal id) VCONST
{
if (id != _cmdId)
return -1;
return _curSelection;
}
//=====================>>> vComboBoxCmd::SetCmdVal <<<=========================
void vComboBoxCmd::SetCmdVal(ItemVal val, ItemSetType st)
{
SysDebug2(Misc,"vComboBoxCmd::SetCmdVal(val:%d, type:%d)\n",val,st)
HWND myHwnd = GetMyHwnd(_cmdId);
if (st == ChangeList || st == ChangeListPtr)
{
if (st == ChangeListPtr)
_itemList = dlgCmd->itemList;
// Change list is used both for initial display,
// and when user changes the list.
::SendDlgItemMessage(_parentWin->getParent(),
_cmdId, CB_RESETCONTENT,0,0); // Clear current
int oldMax = _maxWidth; // track current max width
SetupComboList(); // resetup the list
if (oldMax > _maxWidth)
_maxWidth = oldMax; // don't let it get narrower
for (int ixx = 0 ; ixx < _numItems ; ++ixx)
{
// Add each item to the list
::SendDlgItemMessage(_parentWin->getParent(),_cmdId,
CB_INSERTSTRING,ixx,(LPARAM)_fullList[ixx]);
}
// Need to set to insensitive if it is set insensitive
if (!_Sensitive)
{
::EnableWindow(myHwnd, 0);
}
if (dlgCmd->attrs & CA_Hidden)
{
::ShowWindow(myHwnd,SW_HIDE);
}
_curSelection = val;
::SendDlgItemMessage(_parentWin->getParent(),
_cmdId, CB_SETCURSEL,_curSelection,0);
return;
}
else if (st == Hidden) // hide or unhide
{
if (val)
{
::ShowWindow(myHwnd,SW_HIDE);
}
else
{
::ShowWindow(myHwnd,SW_SHOW);
}
}
else if (st == Value)
{
if (val >= _numItems )
return;
_curSelection = val; // change the current value
if (val < 0) // unselect
{
_curSelection = -1;
return;
}
// Now set appropriate _curSelection
// in windows, -1 means unselect, so this works for both
_retVal = _curSelection;
::SendDlgItemMessage(_parentWin->getParent(),
_cmdId, CB_SETCURSEL,_curSelection,0);
}
else if (st == Sensitive)
{
_Sensitive = val; // set
::EnableWindow(myHwnd, val);
}
}
//===================>>> vComboBoxCmd::CmdCallback <<<=======================
void vComboBoxCmd::CmdCallback(int /* id */, WORD codeNotify)
{
// See if we are getting a message we care about
if (codeNotify != CBN_SELCHANGE)
return;
// Retrieve the current selection
if ((_curSelection = ::SendDlgItemMessage(_parentWin->getParent(),
_cmdId, CB_GETCURSEL,0,0)) == LB_ERR)
{
_curSelection = -1;
return;
}
if (_curSelection >= _numItems ) // Safety check
_curSelection = -1;
if (!(dlgCmd->attrs & CA_NoNotify)) // Notify on each selection?
_parentWin->ProcessCmd(_cmdId, _curSelection, dlgCmd->cmdType);
}
//====================>>> vComboBoxCmd::SetupComboList <<<=======================
void vComboBoxCmd::SetupComboList(void)
{
// Set up the list for use
int len;
_curSelection = -1;
_fullList = (char**)_itemList; // private copy of list
// Calculate widest item and number of items
for ( _numItems = 0 ; _fullList[_numItems] != 0 ; ++_numItems)
{
len = strlen(_fullList[_numItems]); // strlen
if (len > _maxWidth)
_maxWidth = len; // track largest so far
}
_curSelection = _retVal; // the default
if (_curSelection < 0) // make a safe default choice
_curSelection = 0;
else if (_curSelection >= _numItems)
_curSelection = _numItems - 1;
// Note that at this point _numItems is how many items are
// in the user supplied list.
}
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