// Name: choice.cpp
// Purpose: wxChoice
// Author: Julian Smart
-// Modified by:
+// Modified by: Vadim Zeitlin to derive from wxChoiceBase
// Created: 04/01/98
// RCS-ID: $Id$
// Copyright: (c) Julian Smart and Markus Holzem
// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
#ifdef __GNUG__
-#pragma implementation "choice.h"
+ #pragma implementation "choice.h"
#endif
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
-#pragma hdrstop
+ #pragma hdrstop
#endif
#ifndef WX_PRECOMP
-#include "wx/choice.h"
-#include "wx/utils.h"
+ #include "wx/choice.h"
+ #include "wx/utils.h"
+ #include "wx/log.h"
#endif
#include "wx/msw/private.h"
#if !USE_SHARED_LIBRARY
-IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
+ IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
#endif
-bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// creation
+// ----------------------------------------------------------------------------
+
+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)
{
- if (param == CBN_SELCHANGE)
- {
- wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
- event.SetInt(GetSelection());
- event.SetEventObject(this);
- event.SetString(GetStringSelection());
- ProcessCommand(event);
+ if ( !CreateControl(parent, id, pos, size, style, validator, name) )
+ return FALSE;
- return TRUE;
- }
- else
- return FALSE;
-}
-
-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)
-{
- SetName(name);
- SetValidator(validator);
- if (parent) parent->AddChild(this);
- SetBackgroundColour(parent->GetBackgroundColour()) ;
- SetForegroundColour(parent->GetForegroundColour()) ;
- m_noStrings = 0;
-
- m_windowStyle = style;
-
- if ( id == -1 )
- m_windowId = (int)NewControlId();
- else
- m_windowId = id;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
-
- long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_HSCROLL | WS_VSCROLL
- | WS_TABSTOP | WS_VISIBLE;
- if (m_windowStyle & wxCB_SORT)
- msStyle |= CBS_SORT;
-
- bool want3D;
- WXDWORD exStyle = Determine3DEffects(WS_EX_CLIENTEDGE, &want3D) ;
-
- // Even with extended styles, need to combine with WS_BORDER
- // for them to look right.
- if ( want3D || wxStyleHasBorder(m_windowStyle) )
- msStyle |= WS_BORDER;
-
- m_hWnd = (WXHWND)::CreateWindowEx(exStyle, _T("COMBOBOX"), NULL,
- msStyle,
- 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
-
- wxCHECK_MSG( m_hWnd, FALSE, _T("Failed to create combobox") );
-
-/*
-#if wxUSE_CTL3D
- if (want3D)
- {
- m_useCtl3D = TRUE;
- Ctl3dSubclassCtl(wx_combo); // Does CTL3D affect the combobox? I think not.
- }
-#endif
-*/
+ long msStyle = WS_CHILD | CBS_DROPDOWNLIST | WS_TABSTOP | WS_VISIBLE;
+ if ( style & wxCB_SORT )
+ msStyle |= CBS_SORT;
- // Subclass again for purposes of dialog editing mode
- SubclassWin(m_hWnd);
+ // the experience shows that wxChoice vs. wxComboBox distinction confuses
+ // quite a few people - try to help them
+ wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
+ !(style & wxCB_READONLY) &&
+ !(style & wxCB_SIMPLE),
+ _T("this style flag is ignored by wxChoice, you "
+ "probably want to use a wxComboBox") );
- SetFont(parent->GetFont());
+ if ( !MSWCreateControl(_T("COMBOBOX"), msStyle) )
+ return FALSE;
- int i;
- for (i = 0; i < n; i++)
- {
- Append(choices[i]);
- }
- SetSelection(n);
+ for ( int i = 0; i < n; i++ )
+ {
+ Append(choices[i]);
+ }
- SetSize(x, y, width, height);
+ SetSize(pos.x, pos.y, size.x, size.y);
- return TRUE;
+ return TRUE;
}
-void wxChoice::Append(const wxString& item)
-{
- SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)(const wxChar *)item);
+// ----------------------------------------------------------------------------
+// adding/deleting items to/from the list
+// ----------------------------------------------------------------------------
- m_noStrings ++;
+void wxChoice::DoAppend(const wxString& item)
+{
+ SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LONG)item.c_str());
}
void wxChoice::Delete(int n)
{
- m_noStrings = (int)SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
+ wxCHECK_RET( n < GetCount(), _T("invalid item index in wxChoice::Delete") );
+
+ SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
}
-void wxChoice::Clear(void)
+void wxChoice::Clear()
{
- SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
-
- m_noStrings = 0;
+ SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
}
+// ----------------------------------------------------------------------------
+// selection
+// ----------------------------------------------------------------------------
-int wxChoice::GetSelection(void) const
+int wxChoice::GetSelection() const
{
- return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0);
+ return (int)SendMessage(GetHwnd(), CB_GETCURSEL, 0, 0);
}
void wxChoice::SetSelection(int n)
{
- SendMessage(GetHwnd(), CB_SETCURSEL, n, 0);
+ SendMessage(GetHwnd(), CB_SETCURSEL, n, 0);
+}
+
+// ----------------------------------------------------------------------------
+// string list functions
+// ----------------------------------------------------------------------------
+
+int wxChoice::GetCount() const
+{
+ return (int)SendMessage(GetHwnd(), CB_GETCOUNT, 0, 0);
}
int wxChoice::FindString(const wxString& s) const
{
#if defined(__WATCOMC__) && defined(__WIN386__)
- // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message.
- // Do it the long way instead.
- char buf[512];
- for (int i = 0; i < Number(); i++)
- {
- int len = (int)SendMessage(GetHwnd(), CB_GETLBTEXT, i, (LPARAM)(LPSTR)buf);
- buf[len] = 0;
- if (strcmp(buf, (const char *)s) == 0)
- return i;
- }
- return -1;
-#else
- int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT, (WPARAM)-1, (LPARAM)(LPSTR)(const wxChar *)s);
- if (pos == LB_ERR)
- return -1;
- else
- return pos;
-#endif
+ // For some reason, Watcom in WIN386 mode crashes in the CB_FINDSTRINGEXACT message.
+ // wxChoice::Do it the long way instead.
+ int count = GetCount();
+ for ( int i = 0; i < count; i++ )
+ {
+ // as CB_FINDSTRINGEXACT is case insensitive, be case insensitive too
+ if ( GetString(i).IsSameAs(s, FALSE) )
+ return i;
+ }
+
+ return wxNOT_FOUND;
+#else // !Watcom
+ int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT,
+ (WPARAM)-1, (LPARAM)s.c_str());
+
+ return pos == LB_ERR ? wxNOT_FOUND : pos;
+#endif // Watcom/!Watcom
}
wxString wxChoice::GetString(int n) const
return str;
}
+// ----------------------------------------------------------------------------
+// client data
+// ----------------------------------------------------------------------------
+
+void wxChoice::DoSetClientData( int n, void* clientData )
+{
+ if ( SendMessage(GetHwnd(), CB_SETITEMDATA, n, (LPARAM)clientData) == CB_ERR )
+ {
+ wxLogLastError(_T("CB_SETITEMDATA"));
+ }
+}
+
+void* wxChoice::DoGetClientData( int n ) const
+{
+ LPARAM rc = SendMessage(GetHwnd(), CB_GETITEMDATA, n, 0);
+ if ( rc == CB_ERR )
+ {
+ wxLogLastError(_T("CB_GETITEMDATA"));
+
+ // unfortunately, there is no way to return an error code to the user
+ rc = NULL;
+ }
+
+ return (void *)rc;
+}
+
+void wxChoice::DoSetClientObject( int n, wxClientData* clientData )
+{
+ DoSetClientData(n, clientData);
+}
+
+wxClientData* wxChoice::DoGetClientObject( int n ) const
+{
+ return (wxClientData *)DoGetClientData(n);
+}
+
+// ----------------------------------------------------------------------------
+// wxMSW specific helpers
+// ----------------------------------------------------------------------------
+
void wxChoice::DoSetSize(int x, int y,
int width, int height,
int sizeFlags)
// find the widest string
int wLine;
int wChoice = 0;
- for ( int i = 0; i < m_noStrings; i++ )
+ int nItems = GetCount();
+ for ( int i = 0; i < nItems; i++ )
{
wxString str(GetString(i));
GetTextExtent(str, &wLine, NULL);
wChoice += 5*cx;
// Choice drop-down list depends on number of items (limited to 10)
- size_t nStrings = m_noStrings == 0 ? 10 : wxMin(10, m_noStrings) + 1;
+ size_t nStrings = nItems == 0 ? 10 : wxMin(10, nItems) + 1;
int hChoice = EDIT_HEIGHT_FROM_CHAR_HEIGHT(cy)*nStrings;
return wxSize(wChoice, hChoice);
}
-WXHBRUSH wxChoice::OnCtlColor(WXHDC pDC, WXHWND pWnd, WXUINT nCtlColor,
- WXUINT message, WXWPARAM wParam, WXLPARAM lParam)
-{
- return 0;
-}
-
long wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- switch (nMsg)
+ if ( nMsg == WM_LBUTTONUP )
{
-/*
- case WM_GETDLGCODE:
- {
- if (GetWindowStyleFlag() & wxPROCESS_ENTER)
- return DLGC_WANTALLKEYS;
- break;
- }
-*/
-/*
- case WM_CHAR: // Always an ASCII character
- {
- if (wParam == VK_RETURN)
- {
- wxCommandEvent event(wxEVENT_TYPE_TEXT_ENTER_COMMAND);
- event.commandString = ((wxTextCtrl *)item)->GetValue();
- event.eventObject = item;
- item->ProcessCommand(event);
- return FALSE;
- }
- break;
- }
-*/
- case WM_LBUTTONUP:
- {
int x = (int)LOWORD(lParam);
int y = (int)HIWORD(lParam);
- // Ok, this is truly weird, but if a panel with a wxChoice loses the
- // focus, then you get a *fake* WM_LBUTTONUP message
- // with x = 65535 and y = 65535.
- // Filter out this nonsense.
- if (x == 65535 && y == 65535)
- return 0;
- break;
- }
+ // Ok, this is truly weird, but if a panel with a wxChoice loses the
+ // focus, then you get a *fake* WM_LBUTTONUP message with x = 65535 and
+ // y = 65535. Filter out this nonsense.
+ //
+ // VZ: I'd like to know how to reproduce this please...
+ if ( x == 65535 && y == 65535 )
+ return 0;
}
- return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
-}
-
-wxString wxChoice::GetStringSelection (void) const
-{
- int sel = GetSelection ();
- if (sel > -1)
- return wxString(this->GetString (sel));
- else
- return wxString(_T(""));
+ return wxWindow::MSWWindowProc(nMsg, wParam, lParam);
}
-bool wxChoice::SetStringSelection (const wxString& s)
+bool wxChoice::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
{
- int sel = FindString (s);
- if (sel > -1)
+ if ( param != CBN_SELCHANGE)
{
- SetSelection (sel);
- return TRUE;
+ // "selection changed" is the only event we're after
+ return FALSE;
}
- else
- return FALSE;
-}
-
-void wxChoice::Command(wxCommandEvent & event)
-{
- SetSelection (event.GetInt());
- ProcessCommand (event);
-}
+ wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, m_windowId);
+ event.SetInt(GetSelection());
+ event.SetEventObject(this);
+ event.SetString(GetStringSelection());
+ ProcessCommand(event);
+ return TRUE;
+}
projects / wxWidgets.git / blobdiff