src/motif/choice.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        choice.cpp
// Purpose:     wxChoice
// Author:      Julian Smart
// Modified by:
// Created:     17/09/98
// RCS-ID:      $Id$
// Copyright:   (c) Julian Smart
// Licence:     wxWindows licence
/////////////////////////////////////////////////////////////////////////////

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __VMS
#define XtDisplay XTDISPLAY
#define XtParent XTPARENT
#endif

#include "wx/defs.h"

#if wxUSE_CHOICE

#include "wx/choice.h"
#include "wx/utils.h"
#include "wx/arrstr.h"

#ifdef __VMS__
#pragma message disable nosimpint
#endif
#include <Xm/Xm.h>
#include <Xm/PushBG.h>
#include <Xm/PushB.h>
#include <Xm/RowColumn.h>
#ifdef __VMS__
#pragma message enable nosimpint
#endif

#include "wx/motif/private.h"

#define WIDTH_OVERHEAD 48
#define WIDTH_OVERHEAD_SUBTRACT 40
#define HEIGHT_OVERHEAD 15

IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)

void wxChoiceCallback (Widget w, XtPointer clientData,
                       XtPointer ptr);

wxChoice::wxChoice()
{
    Init();
}

void wxChoice::Init()
{
    m_noStrings = 0;
    m_buttonWidget = (WXWidget) 0;
    m_menuWidget = (WXWidget) 0;
    m_formWidget = (WXWidget) 0;
}

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 ( !CreateControl(parent, id, pos, size, style, validator, name) )
        return false;

    Widget parentWidget = (Widget) parent->GetClientWidget();

    m_formWidget = (WXWidget) XtVaCreateManagedWidget(name.c_str(),
        xmRowColumnWidgetClass, parentWidget,
        XmNmarginHeight, 0,
        XmNmarginWidth, 0,
        XmNpacking, XmPACK_TIGHT,
        XmNorientation, XmHORIZONTAL,
        XmNresizeWidth, False,
        XmNresizeHeight, False,
        NULL);

    XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL);

    /*
    * Create the popup menu
    */
    m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget,
                                                    wxMOTIF_STR("choiceMenu"),
                                                    NULL, 0);

    if (n > 0)
    {
        int i;
        for (i = 0; i < n; i++)
            Append (choices[i]);
    }

    /*
    * Create button
    */
    Arg args[10];
    Cardinal argcnt = 0;

    XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget); ++argcnt;
    XtSetArg (args[argcnt], XmNmarginWidth, 0); ++argcnt;
    XtSetArg (args[argcnt], XmNmarginHeight, 0); ++argcnt;
    XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT); ++argcnt;
    m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget,
                                                    wxMOTIF_STR("choiceButton"),
                                                    args, argcnt);

    m_mainWidget = m_buttonWidget;

    XtManageChild ((Widget) m_buttonWidget);

    // New code from Roland Haenel (roland_haenel@ac.cybercity.de)
    // Some time ago, I reported a problem with wxChoice-items under
    // Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems
    // that I have found the code responsible for this behaviour.
#if XmVersion >= 1002
#if XmVersion <  2000
    // JACS, 24/1/99: this seems to cause a malloc crash later on, e.g.
    // in controls sample.
    //
    // Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget);
    // XtUnmanageChild (optionLabel);
#endif
#endif

    wxSize bestSize = GetBestSize();
    if( size.x > 0 ) bestSize.x = size.x;
    if( size.y > 0 ) bestSize.y = size.y;

    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);

    ChangeFont(false);
    ChangeBackgroundColour();

    AttachWidget (parent, m_buttonWidget, m_formWidget,
                  pos.x, pos.y, bestSize.x, bestSize.y);

    return true;
}

bool wxChoice::Create(wxWindow *parent, wxWindowID id,
                      const wxPoint& pos,
                      const wxSize& size,
                      const wxArrayString& choices,
                      long style,
                      const wxValidator& validator,
                      const wxString& name)
{
    wxCArrayString chs(choices);
    return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
                  style, validator, name);
}

wxChoice::~wxChoice()
{
    // For some reason destroying the menuWidget
    // can cause crashes on some machines. It will
    // be deleted implicitly by deleting the parent form
    // anyway.
    //  XtDestroyWidget (menuWidget);

    if (GetMainWidget())
    {
        DetachWidget(GetMainWidget()); // Removes event handlers
        DetachWidget(m_formWidget);

        XtDestroyWidget((Widget) m_formWidget);
        m_formWidget = (WXWidget) 0;

        // Presumably the other widgets have been deleted now, via the form
        m_mainWidget = (WXWidget) 0;
        m_buttonWidget = (WXWidget) 0;
    }
    if ( HasClientObjectData() )
        m_clientDataDict.DestroyData();
}

int wxChoice::DoAppend(const wxString& item)
{
    Widget w = XtVaCreateManagedWidget (wxStripMenuCodes(item),
#if wxUSE_GADGETS
        xmPushButtonGadgetClass, (Widget) m_menuWidget,
#else
        xmPushButtonWidgetClass, (Widget) m_menuWidget,
#endif
        NULL);

    wxDoChangeBackgroundColour((WXWidget) w, m_backgroundColour);

    if( m_font.Ok() )
        wxDoChangeFont( w, m_font );

    m_widgetArray.Add(w);

    char mnem = wxFindMnemonic (item);
    if (mnem != 0)
        XtVaSetValues (w, XmNmnemonic, mnem, NULL);

    XtAddCallback (w, XmNactivateCallback,
                   (XtCallbackProc) wxChoiceCallback,
                   (XtPointer) this);

    if (m_noStrings == 0 && m_buttonWidget)
    {
        XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL);
        Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
        wxXmString text( item );
        XtVaSetValues (label,
            XmNlabelString, text(),
            NULL);
    }
    m_stringList.Add(item);
    m_noStrings ++;

    return GetCount() - 1;
}

int wxChoice::DoInsert(const wxString& item, int pos)
{
    wxCHECK_MSG(false, -1, wxT("insert not implemented"));

//    wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
//    if (pos == GetCount()) return DoAppend(item);
}

void wxChoice::Delete(int n)
{
    Widget w = (Widget)m_widgetArray[n];
    XtRemoveCallback(w, XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
                     (XtPointer)this);
    m_stringList.Erase(m_stringList.Item(n));
    m_widgetArray.RemoveAt(size_t(n));
    m_clientDataDict.Delete(n, HasClientObjectData());

    XtDestroyWidget(w);
    m_noStrings --;
}

void wxChoice::Clear()
{
    m_stringList.Clear ();
    size_t i;
    for (i = 0; i < m_noStrings; i++)
    {
        XtRemoveCallback((Widget) m_widgetArray[i],
                         XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
                         (XtPointer)this);
        XtUnmanageChild ((Widget) m_widgetArray[i]);
        XtDestroyWidget ((Widget) m_widgetArray[i]);
    }
    m_widgetArray.Clear();
    if (m_buttonWidget)
        XtVaSetValues ((Widget) m_buttonWidget,
                       XmNmenuHistory, (Widget) NULL,
                       NULL);

    if ( HasClientObjectData() )
        m_clientDataDict.DestroyData();

    m_noStrings = 0;
}

int wxChoice::GetSelection() const
{
    XmString text;
    Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
    XtVaGetValues (label,
        XmNlabelString, &text,
        NULL);
    wxXmString freeMe(text);
    wxString s = wxXmStringToString( text );

    if (!s.IsEmpty())
    {
        int i = 0;
        for (wxStringList::compatibility_iterator node = m_stringList.GetFirst ();
             node; node = node->GetNext ())
        {
            if (wxStrcmp(node->GetData(), s.c_str()) == 0)
            {
                return i;
            }
            else
                i++;
        }            // for()

        return -1;
    }
    return -1;
}

void wxChoice::SetSelection(int n)
{
    m_inSetValue = true;

    wxStringList::compatibility_iterator node = m_stringList.Item(n);
    if (node)
    {
#if 0
        Dimension selectionWidth, selectionHeight;
#endif
        wxXmString text( node->GetData() );
// MBN: this seems silly, at best, and causes wxChoices to be clipped:
//      will remove "soon"
#if 0
        XtVaGetValues ((Widget) m_widgetArray[n],
                       XmNwidth, &selectionWidth,
                       XmNheight, &selectionHeight,
                       NULL);
#endif
        Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
        XtVaSetValues (label,
            XmNlabelString, text(),
            NULL);
#if 0
        XtVaSetValues ((Widget) m_buttonWidget,
            XmNwidth, selectionWidth, XmNheight, selectionHeight,
            XmNmenuHistory, (Widget) m_widgetArray[n], NULL);
#endif
    }
    m_inSetValue = false;
}

int wxChoice::FindString(const wxString& s) const
{
    int i = 0;
    for (wxStringList::compatibility_iterator node = m_stringList.GetFirst();
         node; node = node->GetNext ())
    {
        if (s == node->GetData())
            return i;

        i++;
    }

    return wxNOT_FOUND;
}

wxString wxChoice::GetString(int n) const
{
    wxStringList::compatibility_iterator node = m_stringList.Item(n);
    if (node)
        return node->GetData();
    else
        return wxEmptyString;
}

void wxChoice::SetColumns(int n)
{
    if (n<1) n = 1 ;

    short numColumns = n ;
    Arg args[3];

    XtSetArg(args[0], XmNnumColumns, numColumns);
    XtSetArg(args[1], XmNpacking, XmPACK_COLUMN);
    XtSetValues((Widget) m_menuWidget,args,2) ;
}

int wxChoice::GetColumns(void) const
{
    short numColumns ;

    XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ;
    return numColumns ;
}

void wxChoice::SetFocus()
{
    XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT);
}

void wxChoice::DoSetSize(int x, int y, int width, int height, int sizeFlags)
{
    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
    bool managed = XtIsManaged((Widget) m_formWidget);

    if (managed)
        XtUnmanageChild ((Widget) m_formWidget);

    int actualWidth = width - WIDTH_OVERHEAD_SUBTRACT,
        actualHeight = height - HEIGHT_OVERHEAD;

    if (width > -1)
    {
        size_t i;
        for (i = 0; i < m_noStrings; i++)
            XtVaSetValues ((Widget) m_widgetArray[i],
                           XmNwidth, actualWidth,
                           NULL);
        XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth,
            NULL);
    }
    if (height > -1)
    {
#if 0
        size_t i;
        for (i = 0; i < m_noStrings; i++)
            XtVaSetValues ((Widget) m_widgetArray[i],
                           XmNheight, actualHeight,
                           NULL);
#endif
        XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight,
            NULL);
    }

    if (managed)
        XtManageChild ((Widget) m_formWidget);
    XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);

    wxControl::DoSetSize (x, y, width, height, sizeFlags);
}

void wxChoice::Command(wxCommandEvent & event)
{
    SetSelection (event.GetInt());
    ProcessCommand (event);
}

void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
{
    wxChoice *item = (wxChoice *) clientData;
    if (item)
    {
        if (item->InSetValue())
            return;

        int n = item->GetWidgets().Index(w);
        if (n != wxNOT_FOUND)
        {
            wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, item->GetId());
            event.SetEventObject(item);
            event.SetInt(n);
            event.SetString( item->GetStrings().Item(n)->GetData() );
            if ( item->HasClientObjectData() )
                event.SetClientObject( item->GetClientObject(n) );
            else if ( item->HasClientUntypedData() )
                event.SetClientData( item->GetClientData(n) );
            item->ProcessCommand (event);
        }
    }
}

void wxChoice::ChangeFont(bool keepOriginalSize)
{
    // Note that this causes the widget to be resized back
    // to its original size! We therefore have to set the size
    // back again. TODO: a better way in Motif?
    if (m_font.Ok())
    {
        Display* dpy = XtDisplay((Widget) m_mainWidget);
        int width, height, width1, height1;
        GetSize(& width, & height);

        WXString fontTag = wxFont::GetFontTag();

        XtVaSetValues ((Widget) m_formWidget,
                       fontTag, m_font.GetFontTypeC(dpy),
                       NULL);
        XtVaSetValues ((Widget) m_buttonWidget,
                       fontTag, m_font.GetFontTypeC(dpy),
                       NULL);

        for( size_t i = 0; i < m_noStrings; ++i )
            XtVaSetValues( (Widget)m_widgetArray[i],
                           fontTag, m_font.GetFontTypeC(dpy),
                           NULL );

        GetSize(& width1, & height1);
        if (keepOriginalSize && (width != width1 || height != height1))
        {
            SetSize(wxDefaultCoord, wxDefaultCoord, width, height);
        }
    }
}

void wxChoice::ChangeBackgroundColour()
{
    wxDoChangeBackgroundColour(m_formWidget, m_backgroundColour);
    wxDoChangeBackgroundColour(m_buttonWidget, m_backgroundColour);
    wxDoChangeBackgroundColour(m_menuWidget, m_backgroundColour);
    size_t i;
    for (i = 0; i < m_noStrings; i++)
        wxDoChangeBackgroundColour(m_widgetArray[i], m_backgroundColour);
}

void wxChoice::ChangeForegroundColour()
{
    wxDoChangeForegroundColour(m_formWidget, m_foregroundColour);
    wxDoChangeForegroundColour(m_buttonWidget, m_foregroundColour);
    wxDoChangeForegroundColour(m_menuWidget, m_foregroundColour);
    size_t i;
    for (i = 0; i < m_noStrings; i++)
        wxDoChangeForegroundColour(m_widgetArray[i], m_foregroundColour);
}

int wxChoice::GetCount() const
{
    return m_noStrings;
}

void wxChoice::DoSetItemClientData(int n, void* clientData)
{
    m_clientDataDict.Set(n, (wxClientData*)clientData, false);
}

void* wxChoice::DoGetItemClientData(int n) const
{
    return (void*)m_clientDataDict.Get(n);
}

void wxChoice::DoSetItemClientObject(int n, wxClientData* clientData)
{
    // don't delete, wxItemContainer does that for us
    m_clientDataDict.Set(n, clientData, false);
}

wxClientData* wxChoice::DoGetItemClientObject(int n) const
{
    return m_clientDataDict.Get(n);
}

void wxChoice::SetString(int WXUNUSED(n), const wxString& WXUNUSED(s))
{
    wxFAIL_MSG( wxT("wxChoice::SetString not implemented") );
}

wxSize wxChoice::GetItemsSize() const
{
    int x, y, mx = 0, my = 0;

    // get my
    GetTextExtent( "|", &x, &my );

    wxStringList::compatibility_iterator curr = m_stringList.GetFirst();
    while( curr )
    {
        GetTextExtent( curr->GetData(), &x, &y );
        mx = wxMax( mx, x );
        my = wxMax( my, y );
        curr = curr->GetNext();
    }

    return wxSize( mx, my );
}

wxSize wxChoice::DoGetBestSize() const
{
    wxSize items = GetItemsSize();
    // FIXME arbitrary constants
    return wxSize( ( items.x ? items.x + WIDTH_OVERHEAD : 120 ),
                     items.y + HEIGHT_OVERHEAD );
}

#endif // wxUSE_CHOICE
Commit	Line	Data
	1	/////////////////////////////////////////////////////////////////////////////
	2	// Name: choice.cpp
	3	// Purpose: wxChoice
	4	// Author: Julian Smart
	5	// Modified by:
	6	// Created: 17/09/98
	7	// RCS-ID: $Id$
	8	// Copyright: (c) Julian Smart
	9	// Licence: wxWindows licence
	10	/////////////////////////////////////////////////////////////////////////////
	11
	12	// For compilers that support precompilation, includes "wx.h".
	13	#include "wx/wxprec.h"
	14
	15	#ifdef __VMS
	16	#define XtDisplay XTDISPLAY
	17	#define XtParent XTPARENT
	18	#endif
	19
	20	#include "wx/defs.h"
	21
	22	#if wxUSE_CHOICE
	23
	24	#include "wx/choice.h"
	25	#include "wx/utils.h"
	26	#include "wx/arrstr.h"
	27
	28	#ifdef __VMS__
	29	#pragma message disable nosimpint
	30	#endif
	31	#include <Xm/Xm.h>
	32	#include <Xm/PushBG.h>
	33	#include <Xm/PushB.h>
	34	#include <Xm/RowColumn.h>
	35	#ifdef __VMS__
	36	#pragma message enable nosimpint
	37	#endif
	38
	39	#include "wx/motif/private.h"
	40
	41	#define WIDTH_OVERHEAD 48
	42	#define WIDTH_OVERHEAD_SUBTRACT 40
	43	#define HEIGHT_OVERHEAD 15
	44
	45	IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
	46
	47	void wxChoiceCallback (Widget w, XtPointer clientData,
	48	XtPointer ptr);
	49
	50	wxChoice::wxChoice()
	51	{
	52	Init();
	53	}
	54
	55	void wxChoice::Init()
	56	{
	57	m_noStrings = 0;
	58	m_buttonWidget = (WXWidget) 0;
	59	m_menuWidget = (WXWidget) 0;
	60	m_formWidget = (WXWidget) 0;
	61	}
	62
	63	bool wxChoice::Create(wxWindow *parent, wxWindowID id,
	64	const wxPoint& pos,
	65	const wxSize& size,
	66	int n, const wxString choices[],
	67	long style,
	68	const wxValidator& validator,
	69	const wxString& name)
	70	{
	71	if ( !CreateControl(parent, id, pos, size, style, validator, name) )
	72	return false;
	73
	74	Widget parentWidget = (Widget) parent->GetClientWidget();
	75
	76	m_formWidget = (WXWidget) XtVaCreateManagedWidget(name.c_str(),
	77	xmRowColumnWidgetClass, parentWidget,
	78	XmNmarginHeight, 0,
	79	XmNmarginWidth, 0,
	80	XmNpacking, XmPACK_TIGHT,
	81	XmNorientation, XmHORIZONTAL,
	82	XmNresizeWidth, False,
	83	XmNresizeHeight, False,
	84	NULL);
	85
	86	XtVaSetValues ((Widget) m_formWidget, XmNspacing, 0, NULL);
	87
	88	/*
	89	* Create the popup menu
	90	*/
	91	m_menuWidget = (WXWidget) XmCreatePulldownMenu ((Widget) m_formWidget,
	92	wxMOTIF_STR("choiceMenu"),
	93	NULL, 0);
	94
	95	if (n > 0)
	96	{
	97	int i;
	98	for (i = 0; i < n; i++)
	99	Append (choices[i]);
	100	}
	101
	102	/*
	103	* Create button
	104	*/
	105	Arg args[10];
	106	Cardinal argcnt = 0;
	107
	108	XtSetArg (args[argcnt], XmNsubMenuId, (Widget) m_menuWidget); ++argcnt;
	109	XtSetArg (args[argcnt], XmNmarginWidth, 0); ++argcnt;
	110	XtSetArg (args[argcnt], XmNmarginHeight, 0); ++argcnt;
	111	XtSetArg (args[argcnt], XmNpacking, XmPACK_TIGHT); ++argcnt;
	112	m_buttonWidget = (WXWidget) XmCreateOptionMenu ((Widget) m_formWidget,
	113	wxMOTIF_STR("choiceButton"),
	114	args, argcnt);
	115
	116	m_mainWidget = m_buttonWidget;
	117
	118	XtManageChild ((Widget) m_buttonWidget);
	119
	120	// New code from Roland Haenel (roland_haenel@ac.cybercity.de)
	121	// Some time ago, I reported a problem with wxChoice-items under
	122	// Linux and Motif 2.0 (they caused sporadic GPFs). Now it seems
	123	// that I have found the code responsible for this behaviour.
	124	#if XmVersion >= 1002
	125	#if XmVersion < 2000
	126	// JACS, 24/1/99: this seems to cause a malloc crash later on, e.g.
	127	// in controls sample.
	128	//
	129	// Widget optionLabel = XmOptionLabelGadget ((Widget) m_buttonWidget);
	130	// XtUnmanageChild (optionLabel);
	131	#endif
	132	#endif
	133
	134	wxSize bestSize = GetBestSize();
	135	if( size.x > 0 ) bestSize.x = size.x;
	136	if( size.y > 0 ) bestSize.y = size.y;
	137
	138	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
	139
	140	ChangeFont(false);
	141	ChangeBackgroundColour();
	142
	143	AttachWidget (parent, m_buttonWidget, m_formWidget,
	144	pos.x, pos.y, bestSize.x, bestSize.y);
	145
	146	return true;
	147	}
	148
	149	bool wxChoice::Create(wxWindow *parent, wxWindowID id,
	150	const wxPoint& pos,
	151	const wxSize& size,
	152	const wxArrayString& choices,
	153	long style,
	154	const wxValidator& validator,
	155	const wxString& name)
	156	{
	157	wxCArrayString chs(choices);
	158	return Create(parent, id, pos, size, chs.GetCount(), chs.GetStrings(),
	159	style, validator, name);
	160	}
	161
	162	wxChoice::~wxChoice()
	163	{
	164	// For some reason destroying the menuWidget
	165	// can cause crashes on some machines. It will
	166	// be deleted implicitly by deleting the parent form
	167	// anyway.
	168	// XtDestroyWidget (menuWidget);
	169
	170	if (GetMainWidget())
	171	{
	172	DetachWidget(GetMainWidget()); // Removes event handlers
	173	DetachWidget(m_formWidget);
	174
	175	XtDestroyWidget((Widget) m_formWidget);
	176	m_formWidget = (WXWidget) 0;
	177
	178	// Presumably the other widgets have been deleted now, via the form
	179	m_mainWidget = (WXWidget) 0;
	180	m_buttonWidget = (WXWidget) 0;
	181	}
	182	if ( HasClientObjectData() )
	183	m_clientDataDict.DestroyData();
	184	}
	185
	186	int wxChoice::DoAppend(const wxString& item)
	187	{
	188	Widget w = XtVaCreateManagedWidget (wxStripMenuCodes(item),
	189	#if wxUSE_GADGETS
	190	xmPushButtonGadgetClass, (Widget) m_menuWidget,
	191	#else
	192	xmPushButtonWidgetClass, (Widget) m_menuWidget,
	193	#endif
	194	NULL);
	195
	196	wxDoChangeBackgroundColour((WXWidget) w, m_backgroundColour);
	197
	198	if( m_font.Ok() )
	199	wxDoChangeFont( w, m_font );
	200
	201	m_widgetArray.Add(w);
	202
	203	char mnem = wxFindMnemonic (item);
	204	if (mnem != 0)
	205	XtVaSetValues (w, XmNmnemonic, mnem, NULL);
	206
	207	XtAddCallback (w, XmNactivateCallback,
	208	(XtCallbackProc) wxChoiceCallback,
	209	(XtPointer) this);
	210
	211	if (m_noStrings == 0 && m_buttonWidget)
	212	{
	213	XtVaSetValues ((Widget) m_buttonWidget, XmNmenuHistory, w, NULL);
	214	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	215	wxXmString text( item );
	216	XtVaSetValues (label,
	217	XmNlabelString, text(),
	218	NULL);
	219	}
	220	m_stringList.Add(item);
	221	m_noStrings ++;
	222
	223	return GetCount() - 1;
	224	}
	225
	226	int wxChoice::DoInsert(const wxString& item, int pos)
	227	{
	228	wxCHECK_MSG(false, -1, wxT("insert not implemented"));
	229
	230	// wxCHECK_MSG((pos>=0) && (pos<=GetCount()), -1, wxT("invalid index"));
	231	// if (pos == GetCount()) return DoAppend(item);
	232	}
	233
	234	void wxChoice::Delete(int n)
	235	{
	236	Widget w = (Widget)m_widgetArray[n];
	237	XtRemoveCallback(w, XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
	238	(XtPointer)this);
	239	m_stringList.Erase(m_stringList.Item(n));
	240	m_widgetArray.RemoveAt(size_t(n));
	241	m_clientDataDict.Delete(n, HasClientObjectData());
	242
	243	XtDestroyWidget(w);
	244	m_noStrings --;
	245	}
	246
	247	void wxChoice::Clear()
	248	{
	249	m_stringList.Clear ();
	250	size_t i;
	251	for (i = 0; i < m_noStrings; i++)
	252	{
	253	XtRemoveCallback((Widget) m_widgetArray[i],
	254	XmNactivateCallback, (XtCallbackProc)wxChoiceCallback,
	255	(XtPointer)this);
	256	XtUnmanageChild ((Widget) m_widgetArray[i]);
	257	XtDestroyWidget ((Widget) m_widgetArray[i]);
	258	}
	259	m_widgetArray.Clear();
	260	if (m_buttonWidget)
	261	XtVaSetValues ((Widget) m_buttonWidget,
	262	XmNmenuHistory, (Widget) NULL,
	263	NULL);
	264
	265	if ( HasClientObjectData() )
	266	m_clientDataDict.DestroyData();
	267
	268	m_noStrings = 0;
	269	}
	270
	271	int wxChoice::GetSelection() const
	272	{
	273	XmString text;
	274	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	275	XtVaGetValues (label,
	276	XmNlabelString, &text,
	277	NULL);
	278	wxXmString freeMe(text);
	279	wxString s = wxXmStringToString( text );
	280
	281	if (!s.IsEmpty())
	282	{
	283	int i = 0;
	284	for (wxStringList::compatibility_iterator node = m_stringList.GetFirst ();
	285	node; node = node->GetNext ())
	286	{
	287	if (wxStrcmp(node->GetData(), s.c_str()) == 0)
	288	{
	289	return i;
	290	}
	291	else
	292	i++;
	293	} // for()
	294
	295	return -1;
	296	}
	297	return -1;
	298	}
	299
	300	void wxChoice::SetSelection(int n)
	301	{
	302	m_inSetValue = true;
	303
	304	wxStringList::compatibility_iterator node = m_stringList.Item(n);
	305	if (node)
	306	{
	307	#if 0
	308	Dimension selectionWidth, selectionHeight;
	309	#endif
	310	wxXmString text( node->GetData() );
	311	// MBN: this seems silly, at best, and causes wxChoices to be clipped:
	312	// will remove "soon"
	313	#if 0
	314	XtVaGetValues ((Widget) m_widgetArray[n],
	315	XmNwidth, &selectionWidth,
	316	XmNheight, &selectionHeight,
	317	NULL);
	318	#endif
	319	Widget label = XmOptionButtonGadget ((Widget) m_buttonWidget);
	320	XtVaSetValues (label,
	321	XmNlabelString, text(),
	322	NULL);
	323	#if 0
	324	XtVaSetValues ((Widget) m_buttonWidget,
	325	XmNwidth, selectionWidth, XmNheight, selectionHeight,
	326	XmNmenuHistory, (Widget) m_widgetArray[n], NULL);
	327	#endif
	328	}
	329	m_inSetValue = false;
	330	}
	331
	332	int wxChoice::FindString(const wxString& s) const
	333	{
	334	int i = 0;
	335	for (wxStringList::compatibility_iterator node = m_stringList.GetFirst();
	336	node; node = node->GetNext ())
	337	{
	338	if (s == node->GetData())
	339	return i;
	340
	341	i++;
	342	}
	343
	344	return wxNOT_FOUND;
	345	}
	346
	347	wxString wxChoice::GetString(int n) const
	348	{
	349	wxStringList::compatibility_iterator node = m_stringList.Item(n);
	350	if (node)
	351	return node->GetData();
	352	else
	353	return wxEmptyString;
	354	}
	355
	356	void wxChoice::SetColumns(int n)
	357	{
	358	if (n<1) n = 1 ;
	359
	360	short numColumns = n ;
	361	Arg args[3];
	362
	363	XtSetArg(args[0], XmNnumColumns, numColumns);
	364	XtSetArg(args[1], XmNpacking, XmPACK_COLUMN);
	365	XtSetValues((Widget) m_menuWidget,args,2) ;
	366	}
	367
	368	int wxChoice::GetColumns(void) const
	369	{
	370	short numColumns ;
	371
	372	XtVaGetValues((Widget) m_menuWidget,XmNnumColumns,&numColumns,NULL) ;
	373	return numColumns ;
	374	}
	375
	376	void wxChoice::SetFocus()
	377	{
	378	XmProcessTraversal(XtParent((Widget)m_mainWidget), XmTRAVERSE_CURRENT);
	379	}
	380
	381	void wxChoice::DoSetSize(int x, int y, int width, int height, int sizeFlags)
	382	{
	383	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_ANY, NULL);
	384	bool managed = XtIsManaged((Widget) m_formWidget);
	385
	386	if (managed)
	387	XtUnmanageChild ((Widget) m_formWidget);
	388
	389	int actualWidth = width - WIDTH_OVERHEAD_SUBTRACT,
	390	actualHeight = height - HEIGHT_OVERHEAD;
	391
	392	if (width > -1)
	393	{
	394	size_t i;
	395	for (i = 0; i < m_noStrings; i++)
	396	XtVaSetValues ((Widget) m_widgetArray[i],
	397	XmNwidth, actualWidth,
	398	NULL);
	399	XtVaSetValues ((Widget) m_buttonWidget, XmNwidth, actualWidth,
	400	NULL);
	401	}
	402	if (height > -1)
	403	{
	404	#if 0
	405	size_t i;
	406	for (i = 0; i < m_noStrings; i++)
	407	XtVaSetValues ((Widget) m_widgetArray[i],
	408	XmNheight, actualHeight,
	409	NULL);
	410	#endif
	411	XtVaSetValues ((Widget) m_buttonWidget, XmNheight, actualHeight,
	412	NULL);
	413	}
	414
	415	if (managed)
	416	XtManageChild ((Widget) m_formWidget);
	417	XtVaSetValues((Widget) m_formWidget, XmNresizePolicy, XmRESIZE_NONE, NULL);
	418
	419	wxControl::DoSetSize (x, y, width, height, sizeFlags);
	420	}
	421
	422	void wxChoice::Command(wxCommandEvent & event)
	423	{
	424	SetSelection (event.GetInt());
	425	ProcessCommand (event);
	426	}
	427
	428	void wxChoiceCallback (Widget w, XtPointer clientData, XtPointer WXUNUSED(ptr))
	429	{
	430	wxChoice item = (wxChoice ) clientData;
	431	if (item)
	432	{
	433	if (item->InSetValue())
	434	return;
	435
	436	int n = item->GetWidgets().Index(w);
	437	if (n != wxNOT_FOUND)
	438	{
	439	wxCommandEvent event(wxEVT_COMMAND_CHOICE_SELECTED, item->GetId());
	440	event.SetEventObject(item);
	441	event.SetInt(n);
	442	event.SetString( item->GetStrings().Item(n)->GetData() );
	443	if ( item->HasClientObjectData() )
	444	event.SetClientObject( item->GetClientObject(n) );
	445	else if ( item->HasClientUntypedData() )
	446	event.SetClientData( item->GetClientData(n) );
	447	item->ProcessCommand (event);
	448	}
	449	}
	450	}
	451
	452	void wxChoice::ChangeFont(bool keepOriginalSize)
	453	{
	454	// Note that this causes the widget to be resized back
	455	// to its original size! We therefore have to set the size
	456	// back again. TODO: a better way in Motif?
	457	if (m_font.Ok())
	458	{
	459	Display* dpy = XtDisplay((Widget) m_mainWidget);
	460	int width, height, width1, height1;
	461	GetSize(& width, & height);
	462
	463	WXString fontTag = wxFont::GetFontTag();
	464
	465	XtVaSetValues ((Widget) m_formWidget,
	466	fontTag, m_font.GetFontTypeC(dpy),
	467	NULL);
	468	XtVaSetValues ((Widget) m_buttonWidget,
	469	fontTag, m_font.GetFontTypeC(dpy),
	470	NULL);
	471
	472	for( size_t i = 0; i < m_noStrings; ++i )
	473	XtVaSetValues( (Widget)m_widgetArray[i],
	474	fontTag, m_font.GetFontTypeC(dpy),
	475	NULL );
	476
	477	GetSize(& width1, & height1);
	478	if (keepOriginalSize && (width != width1 \|\| height != height1))
	479	{
	480	SetSize(wxDefaultCoord, wxDefaultCoord, width, height);
	481	}
	482	}
	483	}
	484
	485	void wxChoice::ChangeBackgroundColour()
	486	{
	487	wxDoChangeBackgroundColour(m_formWidget, m_backgroundColour);
	488	wxDoChangeBackgroundColour(m_buttonWidget, m_backgroundColour);
	489	wxDoChangeBackgroundColour(m_menuWidget, m_backgroundColour);
	490	size_t i;
	491	for (i = 0; i < m_noStrings; i++)
	492	wxDoChangeBackgroundColour(m_widgetArray[i], m_backgroundColour);
	493	}
	494
	495	void wxChoice::ChangeForegroundColour()
	496	{
	497	wxDoChangeForegroundColour(m_formWidget, m_foregroundColour);
	498	wxDoChangeForegroundColour(m_buttonWidget, m_foregroundColour);
	499	wxDoChangeForegroundColour(m_menuWidget, m_foregroundColour);
	500	size_t i;
	501	for (i = 0; i < m_noStrings; i++)
	502	wxDoChangeForegroundColour(m_widgetArray[i], m_foregroundColour);
	503	}
	504
	505	int wxChoice::GetCount() const
	506	{
	507	return m_noStrings;
	508	}
	509
	510	void wxChoice::DoSetItemClientData(int n, void* clientData)
	511	{
	512	m_clientDataDict.Set(n, (wxClientData*)clientData, false);
	513	}
	514
	515	void* wxChoice::DoGetItemClientData(int n) const
	516	{
	517	return (void*)m_clientDataDict.Get(n);
	518	}
	519
	520	void wxChoice::DoSetItemClientObject(int n, wxClientData* clientData)
	521	{
	522	// don't delete, wxItemContainer does that for us
	523	m_clientDataDict.Set(n, clientData, false);
	524	}
	525
	526	wxClientData* wxChoice::DoGetItemClientObject(int n) const
	527	{
	528	return m_clientDataDict.Get(n);
	529	}
	530
	531	void wxChoice::SetString(int WXUNUSED(n), const wxString& WXUNUSED(s))
	532	{
	533	wxFAIL_MSG( wxT("wxChoice::SetString not implemented") );
	534	}
	535
	536	wxSize wxChoice::GetItemsSize() const
	537	{
	538	int x, y, mx = 0, my = 0;
	539
	540	// get my
	541	GetTextExtent( "\|", &x, &my );
	542
	543	wxStringList::compatibility_iterator curr = m_stringList.GetFirst();
	544	while( curr )
	545	{
	546	GetTextExtent( curr->GetData(), &x, &y );
	547	mx = wxMax( mx, x );
	548	my = wxMax( my, y );
	549	curr = curr->GetNext();
	550	}
	551
	552	return wxSize( mx, my );
	553	}
	554
	555	wxSize wxChoice::DoGetBestSize() const
	556	{
	557	wxSize items = GetItemsSize();
	558	// FIXME arbitrary constants
	559	return wxSize( ( items.x ? items.x + WIDTH_OVERHEAD : 120 ),
	560	items.y + HEIGHT_OVERHEAD );
	561	}
	562
	563	#endif // wxUSE_CHOICE