wxEND_FLAGS( wxChoiceStyle )
-IMPLEMENT_DYNAMIC_CLASS_XTI(wxChoice, wxControl,"wx/choice.h")
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxChoice, wxControlWithItems,"wx/choice.h")
wxBEGIN_PROPERTIES_TABLE(wxChoice)
wxEVENT_PROPERTY( Select , wxEVT_COMMAND_CHOICE_SELECTED , wxCommandEvent )
wxCONSTRUCTOR_4( wxChoice , wxWindow* , Parent , wxWindowID , Id , wxPoint , Position , wxSize , Size )
#else
-IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxChoice, wxControlWithItems)
#endif
/*
TODO PROPERTIES
wxASSERT_MSG( !(style & wxCB_DROPDOWN) &&
!(style & wxCB_READONLY) &&
!(style & wxCB_SIMPLE),
- _T("this style flag is ignored by wxChoice, you ")
- _T("probably want to use a wxComboBox") );
+ wxT("this style flag is ignored by wxChoice, you ")
+ wxT("probably want to use a wxComboBox") );
return CreateAndInit(parent, id, pos, size, n, choices, style,
validator, name);
}
// and now we may finally size the control properly (if needed)
- SetBestSize(size);
+ SetInitialSize(size);
return true;
}
+void wxChoice::SetLabel(const wxString& label)
+{
+ if ( FindString(label) == wxNOT_FOUND )
+ {
+ // unless we explicitly do this here, CB_GETCURSEL will continue to
+ // return the index of the previously selected item which will result
+ // in wrongly replacing the value being set now with the previously
+ // value if the user simply opens and closes (without selecting
+ // anything) the combobox popup
+ SetSelection(-1);
+ }
+
+ wxChoiceBase::SetLabel(label);
+}
+
bool wxChoice::Create(wxWindow *parent,
wxWindowID id,
const wxPoint& pos,
wxChoice::~wxChoice()
{
- Free();
+ Clear();
}
// ----------------------------------------------------------------------------
// adding/deleting items to/from the list
// ----------------------------------------------------------------------------
-int wxChoice::DoAppend(const wxString& item)
+int wxChoice::DoInsertItems(const wxArrayStringsAdapter& items,
+ unsigned int pos,
+ void **clientData, wxClientDataType type)
{
- int n = (int)SendMessage(GetHwnd(), CB_ADDSTRING, 0, (LPARAM)item.c_str());
- if ( n == CB_ERR )
- {
- wxLogLastError(wxT("SendMessage(CB_ADDSTRING)"));
- }
- else // ok
- {
- // we need to refresh our size in order to have enough space for the
- // newly added items
- if ( !IsFrozen() )
- UpdateVisibleHeight();
- }
+ MSWAllocStorage(items, CB_INITSTORAGE);
- InvalidateBestSize();
- return n;
-}
+ const bool append = pos == GetCount();
-int wxChoice::DoInsert(const wxString& item, unsigned int pos)
-{
- wxCHECK_MSG(!(GetWindowStyle() & wxCB_SORT), -1, wxT("can't insert into sorted list"));
- wxCHECK_MSG(IsValidInsert(pos), -1, wxT("invalid index"));
+ // use CB_ADDSTRING when appending at the end to make sure the control is
+ // resorted if it has wxCB_SORT style
+ const unsigned msg = append ? CB_ADDSTRING : CB_INSERTSTRING;
- int n = (int)SendMessage(GetHwnd(), CB_INSERTSTRING, pos, (LPARAM)item.c_str());
- if ( n == CB_ERR )
- {
- wxLogLastError(wxT("SendMessage(CB_INSERTSTRING)"));
- }
- else // ok
+ if ( append )
+ pos = 0;
+
+ int n = wxNOT_FOUND;
+ const unsigned numItems = items.GetCount();
+ for ( unsigned i = 0; i < numItems; ++i )
{
- if ( !IsFrozen() )
- UpdateVisibleHeight();
+ n = MSWInsertOrAppendItem(pos, items[i], msg);
+ if ( n == wxNOT_FOUND )
+ return n;
+
+ if ( !append )
+ pos++;
+
+ AssignNewItemClientData(n, clientData, i, type);
}
+ // we need to refresh our size in order to have enough space for the
+ // newly added items
+ if ( !IsFrozen() )
+ MSWUpdateDropDownHeight();
+
InvalidateBestSize();
+
return n;
}
-void wxChoice::Delete(unsigned int n)
+void wxChoice::DoDeleteOneItem(unsigned int n)
{
wxCHECK_RET( IsValid(n), wxT("invalid item index in wxChoice::Delete") );
- if ( HasClientObjectData() )
- {
- delete GetClientObject(n);
- }
-
SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
if ( !IsFrozen() )
- UpdateVisibleHeight();
+ MSWUpdateDropDownHeight();
InvalidateBestSize();
}
-void wxChoice::Clear()
+void wxChoice::DoClear()
{
- Free();
-
SendMessage(GetHwnd(), CB_RESETCONTENT, 0, 0);
if ( !IsFrozen() )
- UpdateVisibleHeight();
+ MSWUpdateDropDownHeight();
InvalidateBestSize();
}
-void wxChoice::Free()
-{
- if ( HasClientObjectData() )
- {
- unsigned int count = GetCount();
- for ( unsigned int n = 0; n < count; n++ )
- {
- delete GetClientObject(n);
- }
- }
-}
-
// ----------------------------------------------------------------------------
// selection
// ----------------------------------------------------------------------------
else
{
int pos = (int)SendMessage(GetHwnd(), CB_FINDSTRINGEXACT,
- (WPARAM)-1, (LPARAM)s.c_str());
+ (WPARAM)-1, (LPARAM)s.wx_str());
return pos == LB_ERR ? wxNOT_FOUND : pos;
}
// we have to delete and add back the string as there is no way to change a
// string in place
- // we need to preserve the client data
- void *data;
- if ( m_clientDataItemsType != wxClientData_None )
- {
- data = DoGetItemClientData(n);
- }
- else // no client data
- {
- data = NULL;
- }
+ // we need to preserve the client data manually
+ void *oldData = NULL;
+ wxClientData *oldObjData = NULL;
+ if ( HasClientUntypedData() )
+ oldData = GetClientData(n);
+ else if ( HasClientObjectData() )
+ oldObjData = GetClientObject(n);
::SendMessage(GetHwnd(), CB_DELETESTRING, n, 0);
- ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.c_str() );
+ ::SendMessage(GetHwnd(), CB_INSERTSTRING, n, (LPARAM)s.wx_str() );
- if ( data )
- {
- DoSetItemClientData(n, data);
- }
- //else: it's already NULL by default
+ // restore the client data
+ if ( oldData )
+ SetClientData(n, oldData);
+ else if ( oldObjData )
+ SetClientObject(n, oldObjData);
InvalidateBestSize();
}
return (void *)rc;
}
-void wxChoice::DoSetItemClientObject(unsigned int n, wxClientData* clientData)
+// ----------------------------------------------------------------------------
+// wxMSW-specific geometry management
+// ----------------------------------------------------------------------------
+
+namespace
{
- DoSetItemClientData(n, clientData);
-}
-wxClientData* wxChoice::DoGetItemClientObject(unsigned int n) const
+// there is a difference between the height passed to CB_SETITEMHEIGHT and the
+// real height of the combobox; it is probably not constant for all Windows
+// versions/settings but right now I don't know how to find what it is so it is
+// temporarily hardcoded to its value under XP systems with normal fonts sizes
+const int COMBO_HEIGHT_ADJ = 6;
+
+} // anonymous namespace
+
+void wxChoice::MSWUpdateVisibleHeight()
{
- return (wxClientData *)DoGetItemClientData(n);
+ if ( m_heightOwn != wxDefaultCoord )
+ {
+ ::SendMessage(GetHwnd(), CB_SETITEMHEIGHT,
+ (WPARAM)-1, m_heightOwn - COMBO_HEIGHT_ADJ);
+ }
}
-// ----------------------------------------------------------------------------
-// wxMSW specific helpers
-// ----------------------------------------------------------------------------
+#if wxUSE_DEFERRED_SIZING
+void wxChoice::MSWEndDeferWindowPos()
+{
+ // we can only set the height of the choice itself now as it is reset to
+ // default every time the control is resized
+ MSWUpdateVisibleHeight();
-void wxChoice::UpdateVisibleHeight()
+ wxChoiceBase::MSWEndDeferWindowPos();
+}
+#endif // wxUSE_DEFERRED_SIZING
+
+void wxChoice::MSWUpdateDropDownHeight()
{
// be careful to not change the width here
- DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, GetSize().y, wxSIZE_USE_EXISTING);
+ DoSetSize(wxDefaultCoord, wxDefaultCoord, wxDefaultCoord, GetSize().y,
+ wxSIZE_USE_EXISTING);
}
void wxChoice::DoMoveWindow(int x, int y, int width, int height)
void wxChoice::DoGetSize(int *w, int *h) const
{
+ wxControl::DoGetSize(w, h);
+
// this is weird: sometimes, the height returned by Windows is clearly the
// total height of the control including the drop down list -- but only
- // sometimes, and normally it isn't... I have no idea about what to do with
- // this
- wxControl::DoGetSize(w, h);
+ // sometimes, and sometimes it isn't so work around this here by using our
+ // own stored value if we have it
+ if ( h && m_heightOwn != wxDefaultCoord )
+ *h = m_heightOwn;
}
void wxChoice::DoSetSize(int x, int y,
int width, int height,
int sizeFlags)
{
- int heightOrig = height;
-
- // the height which we must pass to Windows should be the total height of
- // the control including the drop down list while the height given to us
- // is, of course, just the height of the permanently visible part of it
- if ( height != wxDefaultCoord )
+ // we need the real height below so get the current one if it's not given
+ if ( height != wxDefaultCoord && height != GetBestSize().y )
{
- // don't make the drop down list too tall, arbitrarily limit it to 40
- // items max and also don't leave it empty
- size_t nItems = GetCount();
- if ( !nItems )
- nItems = 9;
- else if ( nItems > 24 )
- nItems = 24;
-
- // add space for the drop down list
- const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
- height += hItem*(nItems + 1);
+ // set our new own height but be careful not to make it too big: the
+ // native control apparently stores it as a single byte and so setting
+ // own height to 256 pixels results in default height being used (255
+ // is still ok)
+ m_heightOwn = height;
+
+ if ( m_heightOwn > UCHAR_MAX )
+ m_heightOwn = UCHAR_MAX;
+ // nor too small: see MSWUpdateVisibleHeight()
+ else if ( m_heightOwn < COMBO_HEIGHT_ADJ )
+ m_heightOwn = COMBO_HEIGHT_ADJ;
}
- else
+ else // height not specified
{
- // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
- // wxGetWindowRect() to determine the current height of the combobox,
- // and then again sets the combobox's height to that value. Unfortunately,
- // wxGetWindowRect doesn't include the dropdown list's height (at least
- // on Win2K), so this would result in a combobox with dropdown height of
- // 1 pixel. We have to determine the default height ourselves and call
- // wxControl with that value instead.
- int w, h;
- RECT r;
- DoGetSize(&w, &h);
- if (::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r) != 0)
- {
- height = h + r.bottom - r.top;
- }
+ DoGetSize(NULL, &height);
}
- wxControl::DoSetSize(x, y, width, height, sizeFlags);
-
- // If we're storing a pending size, make sure we store
- // the original size for reporting back to the app.
- if (m_pendingSize != wxDefaultSize)
- m_pendingSize = wxSize(width, heightOrig);
-
- // This solution works on XP, but causes choice/combobox lists to be
- // too short on W2K and earlier.
-#if 0
- int widthCurrent, heightCurrent;
- DoGetSize(&widthCurrent, &heightCurrent);
// the height which we must pass to Windows should be the total height of
// the control including the drop down list while the height given to us
- // is, of course, just the height of the permanently visible part of it
- if ( height != wxDefaultCoord && height != heightCurrent )
+ // is, of course, just the height of the permanently visible part of it so
+ // add the drop down height to it
+
+ // don't make the drop down list too tall, arbitrarily limit it to 30
+ // items max and also don't make it too small if it's currently empty
+ size_t nItems = GetCount();
+ if ( !nItems )
+ nItems = 9;
+ else if ( nItems > 30 )
+ nItems = 30;
+
+ const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
+ const int heightWithItems = height + hItem*nItems;
+
+
+ // do resize the native control
+ wxControl::DoSetSize(x, y, width, heightWithItems, sizeFlags);
+
+
+ // make the control itself of the requested height: notice that this
+ // must be done after changing its size or it has no effect (apparently
+ // the height is reset to default during the control layout) and that it's
+ // useless to to do it when using the deferred sizing -- in this case it
+ // will be done from MSWEndDeferWindowPos()
+#if wxUSE_DEFERRED_SIZING
+ if ( m_pendingSize == wxDefaultSize )
{
- // don't make the drop down list too tall, arbitrarily limit it to 40
- // items max and also don't leave it empty
- unsigned int nItems = GetCount();
- if ( !nItems )
- nItems = 9;
- else if ( nItems > 24 )
- nItems = 24;
-
- // add space for the drop down list
- const int hItem = SendMessage(GetHwnd(), CB_GETITEMHEIGHT, 0, 0);
- height += hItem*(nItems + 1);
+ // not using deferred sizing, update it immediately
+ MSWUpdateVisibleHeight();
}
- else // keep the same height as now
+ else // in the middle of deferred sizing
{
- // normally wxWindow::DoSetSize() checks if we set the same size as the
- // window already has and does nothing in this case, but for us the
- // check fails as the size we pass to it includes the dropdown while
- // the size returned by our GetSize() does not, so test if the size
- // didn't really change ourselves here
- if ( width == wxDefaultCoord || width == widthCurrent )
- {
- // size doesn't change, what about position?
- int xCurrent, yCurrent;
- DoGetPosition(&xCurrent, &yCurrent);
- const bool defMeansUnchanged = !(sizeFlags & wxSIZE_ALLOW_MINUS_ONE);
- if ( ((x == wxDefaultCoord && defMeansUnchanged) || x == xCurrent)
- &&
- ((y == wxDefaultCoord && defMeansUnchanged) || y == yCurrent) )
- {
- // nothing changes, nothing to do
- return;
- }
- }
-
- // We cannot pass wxDefaultCoord as height to wxControl. wxControl uses
- // wxGetWindowRect() to determine the current height of the combobox,
- // and then again sets the combobox's height to that value. Unfortunately,
- // wxGetWindowRect doesn't include the dropdown list's height (at least
- // on Win2K), so this would result in a combobox with dropdown height of
- // 1 pixel. We have to determine the default height ourselves and call
- // wxControl with that value instead.
- //
- // Also notice that sometimes CB_GETDROPPEDCONTROLRECT seems to return
- // wildly incorrect values (~32000) which looks like a bug in it, just
- // ignore them in this case
- RECT r;
- if ( ::SendMessage(GetHwnd(), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM) &r)
- && r.bottom < 30000 )
- {
- height = heightCurrent + r.bottom - r.top;
- }
+ // we need to report the size of the visible part of the control back
+ // in GetSize() and not height stored by DoSetSize() in m_pendingSize
+ m_pendingSize = wxSize(width, height);
}
-
- wxControl::DoSetSize(x, y, width, height, sizeFlags);
-#endif
+#else // !wxUSE_DEFERRED_SIZING
+ // always update the visible height immediately
+ MSWUpdateVisibleHeight();
+#endif // wxUSE_DEFERRED_SIZING
}
wxSize wxChoice::DoGetBestSize() const
return best;
}
+// ----------------------------------------------------------------------------
+// MSW message handlers
+// ----------------------------------------------------------------------------
+
WXLRESULT wxChoice::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
switch ( nMsg )
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