/////////////////////////////////////////////////////////////////////////////
// Name: choice.cpp
// Purpose: wxChoice
-// Author: AUTHOR
+// Author: David Webster
// Modified by:
-// Created: ??/??/98
+// Created: 10/13/99
// RCS-ID: $Id$
-// Copyright: (c) AUTHOR
-// Licence: wxWindows licence
+// Copyright: (c) David Webster
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifdef __GNUG__
-#pragma implementation "choice.h"
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#ifndef WX_PRECOMP
+ #include "wx/choice.h"
+ #include "wx/utils.h"
+ #include "wx/log.h"
#endif
-// For compilers that support precompilation, includes "wx.h".
-#include "wx/choice.h"
+#include "wx/os2/private.h"
-#if !USE_SHARED_LIBRARY
IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
-#endif
-bool wxChoice::Create(wxWindow *parent, wxWindowID id,
- const wxPoint& pos,
- const wxSize& size,
- int n, const wxString choices[],
- long style,
- const wxValidator& validator,
- const wxString& name)
+bool wxChoice::Create(
+ wxWindow* pParent
+, wxWindowID vId
+, const wxPoint& rPos
+, const wxSize& rSize
+, int n
+, const wxString asChoices[]
+, long lStyle
+#if wxUSE_VALIDATORS
+, const wxValidator& rValidator
+#endif
+, const wxString& rsName
+)
{
- SetName(name);
- SetValidator(validator);
- m_noStrings = n;
- m_windowStyle = style;
+ long lSstyle;
+
+ if (!OS2CreateControl( pParent
+ ,vId
+ ,rPos
+ ,rSize
+ ,lStyle
+#if wxUSE_VALIDATORS
+ ,rValidator
+#endif
+ ,rsName
+ ))
+ return FALSE;
+ lSstyle = CBS_DROPDOWNLIST |
+ WS_TABSTOP |
+ WS_VISIBLE;
- if (parent) parent->AddChild(this);
+ if (lStyle & wxCLIP_SIBLINGS )
+ lSstyle |= WS_CLIPSIBLINGS;
- if ( id == -1 )
- m_windowId = (int)NewControlId();
- else
- m_windowId = id;
+ wxASSERT_MSG( !(lStyle & wxCB_DROPDOWN) &&
+ !(lStyle & wxCB_READONLY) &&
+ !(lStyle & wxCB_SIMPLE),
+ wxT("this style flag is ignored by wxChoice, you "
+ "probably want to use a wxComboBox") );
+
+ if (!OS2CreateControl( wxT("COMBOBOX")
+ ,lSstyle
+ ))
+ return FALSE;
- // TODO: create choice control
- return FALSE;
-}
+ //
+ // A choice/combobox normally has a white background (or other, depending
+ // on global settings) rather than inheriting the parent's background colour.
+ //
+ SetBackgroundColour(wxSystemSettings::GetSystemColour(wxSYS_COLOUR_WINDOW));
+ for (int i = 0; i < n; i++)
+ {
+ Append(asChoices[i]);
+ }
+ SetSize( rPos.x
+ ,rPos.y
+ ,rSize.x
+ ,rSize.y
+ );
-void wxChoice::Append(const wxString& item)
+ return TRUE;
+} // end of wxChoice::Create
+
+// ----------------------------------------------------------------------------
+// adding/deleting items to/from the list
+// ----------------------------------------------------------------------------
+
+int wxChoice::DoAppend(
+ const wxString& rsItem
+)
{
- // TODO
- m_noStrings ++;
-}
+ int nIndex;
+ SHORT nIndexType = 0;
-void wxChoice::Delete(int n)
+ if (m_windowStyle & wxLB_SORT)
+ nIndexType = LIT_SORTASCENDING;
+ else
+ nIndexType = LIT_END;
+ nIndex = (int)::WinSendMsg( GetHwnd()
+ ,LM_INSERTITEM
+ ,(MPARAM)nIndexType
+ ,(MPARAM)rsItem.c_str()
+ );
+ return nIndex;
+} // end of wxChoice::DoAppend
+
+void wxChoice::Delete(
+ int n
+)
{
- // TODO
- m_noStrings --;
-}
+ wxCHECK_RET( n < GetCount(), wxT("invalid item index in wxChoice::Delete") );
+ ::WinSendMsg(GetHwnd(), LM_DELETEITEM, (MPARAM)n, (MPARAM)0);
+} // end of wxChoice::Delete
void wxChoice::Clear()
{
- // TODO
- m_noStrings = 0;
-}
+ Free();
+ ::WinSendMsg(GetHwnd(), LM_DELETEALL, (MPARAM)0, (MPARAM)0);
+} // end of wxChoice::Clear
+
+// ----------------------------------------------------------------------------
+// selection
+// ----------------------------------------------------------------------------
int wxChoice::GetSelection() const
{
- // TODO
- return 0;
-}
+ return((int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYSELECTION, (MPARAM)LIT_FIRST, (MPARAM)0)));
+} // end of wxChoice::GetSelection
-void wxChoice::SetSelection(int n)
+void wxChoice::SetSelection(
+ int n
+)
{
- // TODO
-}
+ ::WinSendMsg( GetHwnd()
+ ,LM_SELECTITEM
+ ,(MPARAM)n
+ ,(MPARAM)TRUE
+ );
+} // end of wxChoice::SetSelection
-int wxChoice::FindString(const wxString& s) const
+// ----------------------------------------------------------------------------
+// string list functions
+// ----------------------------------------------------------------------------
+
+int wxChoice::GetCount() const
{
- // TODO
- return 0;
-}
+ return((int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMCOUNT, (MPARAM)0, (MPARAM)0)));
+} // end of wxChoice::GetCount
-wxString wxChoice::GetString(int n) const
+int wxChoice::FindString(
+ const wxString& rsStr
+) const
{
- // TODO
- return wxString("");
-}
+ int nPos;
+ int nTextLength;
+ PSZ zStr;
+ int nItemCount;
-void wxChoice::SetSize(int x, int y, int width, int height, int sizeFlags)
+ nItemCount = (int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMCOUNT, (MPARAM)0, (MPARAM)0));
+ for (nPos = 0; nPos < nItemCount; nPos++)
+ {
+ nTextLength = (int)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXTLENGTH, (MPARAM)nPos, (MPARAM)0));
+ zStr = new char[nTextLength + 1];
+ ::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXT, MPFROM2SHORT((SHORT)nPos, (SHORT)nTextLength), (MPARAM)zStr);
+ if (rsStr == (char*)zStr)
+ {
+ delete [] zStr;
+ break;
+ }
+ delete [] zStr;
+ }
+ return nPos;
+} // end of wxChoice::FindString
+
+void wxChoice::SetString(
+ int n
+, const wxString& rsStr
+)
{
- // TODO
-}
+ wxFAIL_MSG(wxT("not implemented"));
-wxString wxChoice::GetStringSelection () const
+#if 0 // should do this, but no Insert() so far
+ Delete(n);
+ Insert(n + 1, s);
+#endif
+} // end of wxChoice::SetString
+
+wxString wxChoice::GetString(
+ int n
+) const
{
- int sel = GetSelection ();
- if (sel > -1)
- return wxString(this->GetString (sel));
- else
- return wxString("");
-}
+ size_t nLen = 0;
+ wxString sStr = "";
+ char* zBuf;
+
+ nLen = (size_t)LONGFROMMR(::WinSendMsg(GetHwnd(), LM_QUERYITEMTEXTLENGTH, (MPARAM)n, (MPARAM)0));
+ if (nLen)
+ {
+ zBuf = new char[nLen + 1];
+ ::WinSendMsg( GetHwnd()
+ ,LM_QUERYITEMTEXT
+ ,MPFROM2SHORT((SHORT)n, (SHORT)nLen)
+ ,(MPARAM)zBuf
+ );
+ sStr = zBuf;
+ delete [] zBuf;
+ }
+ return sStr;
+} // end of wxChoice::GetString
-bool wxChoice::SetStringSelection (const wxString& s)
+// ----------------------------------------------------------------------------
+// client data
+// ----------------------------------------------------------------------------
+
+void wxChoice::DoSetItemClientData(
+ int n
+, void* pClientData
+)
{
- int sel = FindString (s);
- if (sel > -1)
- {
- SetSelection (sel);
- return TRUE;
- }
- else
+ ::WinSendMsg(GetHwnd(), LM_SETITEMHANDLE, (MPARAM)n, MPFROMP(pClientData));
+} // end of wxChoice::DoSetItemClientData
+
+void* wxChoice::DoGetItemClientData( int n ) const
+{
+ MRESULT rc = 0L;
+
+ rc = ::WinSendMsg(GetHwnd(), LM_QUERYITEMHANDLE, (MPARAM)n, (MPARAM)0);
+ return((void*)rc);
+} // end of wxChoice::DoSetItemClientData
+
+void wxChoice::DoSetItemClientObject(
+ int n
+, wxClientData* pClientData
+)
+{
+ DoSetItemClientData( n
+ ,pClientData
+ );
+} // end of wxChoice::DoSetItemClientObject
+
+wxClientData* wxChoice::DoGetItemClientObject(
+ int n
+) const
+{
+ return (wxClientData *)DoGetItemClientData(n);
+} // end of wxChoice::DoGetItemClientObject
+
+// ----------------------------------------------------------------------------
+// wxOS2 specific helpers
+// ----------------------------------------------------------------------------
+
+void wxChoice::DoSetSize(
+ int nX
+, int nY
+, int nWidth
+, int nHeight
+, int nSizeFlags
+)
+{
+ //
+ // Ignore height parameter because height doesn't mean 'initially
+ // displayed' height, it refers to the drop-down menu as well. The
+ // wxWindows interpretation is different; also, getting the size returns
+ // the _displayed_ size (NOT the drop down menu size) so
+ // setting-getting-setting size would not work.
+ //
+ wxControl::DoSetSize( nX
+ ,nY
+ ,nWidth
+ ,-1
+ ,nSizeFlags
+ );
+} // end of wxChoice::DoSetSize
+
+wxSize wxChoice::DoGetBestSize() const
+{
+ //
+ // Find the widest string
+ //
+ int nLineWidth;
+ int nChoiceWidth = 0;
+ int nItems = GetCount();
+ int nCx;
+ int nCy;
+
+ for (int i = 0; i < nItems; i++)
+ {
+ wxString sStr(GetString(i));
+
+ GetTextExtent( sStr
+ ,&nLineWidth
+ ,NULL
+ );
+ if (nLineWidth > nChoiceWidth)
+ nChoiceWidth = nLineWidth;
+ }
+
+ //
+ // Give it some reasonable default value if there are no strings in the
+ // list
+ //
+ if (nChoiceWidth == 0L)
+ nChoiceWidth = 100L;
+
+ //
+ // The combobox should be larger than the widest string
+ //
+ wxGetCharSize( GetHWND()
+ ,&nCx
+ ,&nCy
+ ,(wxFont*)&GetFont()
+ );
+ nChoiceWidth += 5 * nCx;
+
+ //
+ // Choice drop-down list depends on number of items (limited to 10)
+ //
+ size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1;
+ int nChoiceHeight = EDIT_HEIGHT_FROM_CHAR_HEIGHT(nCy) * nStrings;
+
+ return wxSize( nChoiceWidth
+ ,nChoiceHeight
+ );
+} // end of wxChoice::DoGetBestSize
+
+MRESULT wxChoice::OS2WindowProc(
+ WXUINT uMsg
+, WXWPARAM wParam
+, WXLPARAM lParam
+)
+{
+ return wxWindow::OS2WindowProc( uMsg
+ ,wParam
+ ,lParam
+ );
+} // end of wxChoice::OS2WindowProc
+
+bool wxChoice::OS2Command(
+ WXUINT uParam
+, WXWORD WXUNUSED(wId)
+)
+{
+ if (uParam != LN_SELECT)
+ {
+ //
+ // "selection changed" is the only event we're after
+ //
return FALSE;
-}
+ }
+ int n = GetSelection();
+
+ if (n > -1)
+ {
+ wxCommandEvent vEvent( wxEVT_COMMAND_CHOICE_SELECTED
+ ,m_windowId
+ );
-void wxChoice::Command(wxCommandEvent & event)
+ vEvent.SetInt(n);
+ vEvent.SetEventObject(this);
+ vEvent.SetString((char*)GetStringSelection().c_str());
+ if (HasClientObjectData())
+ vEvent.SetClientObject(GetClientObject(n));
+ else if (HasClientUntypedData())
+ vEvent.SetClientData(GetClientData(n));
+ ProcessCommand(vEvent);
+ }
+ return TRUE;
+} // end of wxChoice::OS2Command
+
+void wxChoice::Free()
{
- SetSelection (event.GetInt());
- ProcessCommand (event);
-}
+ if (HasClientObjectData())
+ {
+ size_t nCount = GetCount();
+ for (size_t n = 0; n < nCount; n++)
+ {
+ delete GetClientObject(n);
+ }
+ }
+} // end of wxhoice::Free
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