#include "wx/textctrl.h"
#endif
+#include "wx/app.h"
#include "wx/combobox.h"
#include "wx/brush.h"
#include "wx/clipbrd.h"
wxEND_HANDLERS_TABLE()
wxCONSTRUCTOR_5( wxComboBox , wxWindow* , Parent , wxWindowID , Id , wxString , Value , wxPoint , Position , wxSize , Size )
+
#else
+
IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
+
#endif
+BEGIN_EVENT_TABLE(wxComboBox, wxControl)
+ EVT_MENU(wxID_CUT, wxComboBox::OnCut)
+ EVT_MENU(wxID_COPY, wxComboBox::OnCopy)
+ EVT_MENU(wxID_PASTE, wxComboBox::OnPaste)
+ EVT_MENU(wxID_UNDO, wxComboBox::OnUndo)
+ EVT_MENU(wxID_REDO, wxComboBox::OnRedo)
+ EVT_MENU(wxID_CLEAR, wxComboBox::OnDelete)
+ EVT_MENU(wxID_SELECTALL, wxComboBox::OnSelectAll)
+
+ EVT_UPDATE_UI(wxID_CUT, wxComboBox::OnUpdateCut)
+ EVT_UPDATE_UI(wxID_COPY, wxComboBox::OnUpdateCopy)
+ EVT_UPDATE_UI(wxID_PASTE, wxComboBox::OnUpdatePaste)
+ EVT_UPDATE_UI(wxID_UNDO, wxComboBox::OnUpdateUndo)
+ EVT_UPDATE_UI(wxID_REDO, wxComboBox::OnUpdateRedo)
+ EVT_UPDATE_UI(wxID_CLEAR, wxComboBox::OnUpdateDelete)
+ EVT_UPDATE_UI(wxID_SELECTALL, wxComboBox::OnUpdateSelectAll)
+END_EVENT_TABLE()
+
// ----------------------------------------------------------------------------
// function prototypes
// ----------------------------------------------------------------------------
case WM_KEYUP:
case WM_KEYDOWN:
case WM_CHAR:
+ case WM_SYSCHAR:
+ case WM_SYSKEYDOWN:
+ case WM_SYSKEYUP:
case WM_SETFOCUS:
case WM_KILLFOCUS:
{
return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
}
-WXHBRUSH wxComboBox::OnCtlColor(WXHDC pDC,
- WXHWND WXUNUSED(pWnd),
- WXUINT WXUNUSED(nCtlColor),
- WXUINT WXUNUSED(message),
- WXWPARAM WXUNUSED(wParam),
- WXLPARAM WXUNUSED(lParam))
-{
- HDC hdc = (HDC)pDC;
- wxColour colBack = GetBackgroundColour();
-
- if (!IsEnabled())
- colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
-
- ::SetBkColor(hdc, wxColourToRGB(colBack));
- ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
-
- wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
-
- return (WXHBRUSH)brush->GetResourceHandle();
-}
-
// ----------------------------------------------------------------------------
// wxComboBox callbacks
// ----------------------------------------------------------------------------
WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam)
{
- // handle WM_CTLCOLOR messages from our EDIT control to be able to set its
- // colour correctly (to be the same as our own one)
+ // TODO: handle WM_CTLCOLOR messages from our EDIT control to be able to
+ // set its colour correctly (to be the same as our own one)
+
switch ( nMsg )
{
- // we have to handle both: one for the normal case and the other for
- // wxCB_READONLY
- case WM_CTLCOLOREDIT:
- case WM_CTLCOLORSTATIC:
- WXWORD nCtlColor;
- WXHDC hdc;
- WXHWND hwnd;
- UnpackCtlColor(wParam, lParam, &nCtlColor, &hdc, &hwnd);
-
- return (WXLRESULT)OnCtlColor(hdc, hwnd, nCtlColor, nMsg, wParam, lParam);
+ case CB_SETCURSEL:
+ // Selection was set with SetSelection. Update the value too.
+ if ((int)wParam > GetCount())
+ m_value.clear();
+ else
+ m_value = GetString(wParam);
+ m_selectionOld = -1;
+ break;
+
+ case WM_SIZE:
+ {
+ // combobox selection sometimes spontaneously changes when its
+ // size changes, restore it to the old value if necessary
+ long fromOld, toOld;
+ GetSelection(&fromOld, &toOld);
+ WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam);
+
+ long fromNew, toNew;
+ GetSelection(&fromNew, &toNew);
+
+ if ( fromOld != fromNew || toOld != toNew )
+ {
+ SetSelection(fromOld, toOld);
+ }
+
+ return result;
+ }
}
return wxChoice::MSWWindowProc(nMsg, wParam, lParam);
InitCommandEvent(event);
event.SetString(GetValue());
event.SetInt(GetSelection());
- ProcessCommand(event);
+ if ( ProcessCommand(event) )
+ {
+ // don't let the event through to the native control
+ // because it doesn't need it and may generate an annoying
+ // beep if it gets it
+ return true;
+ }
}
+ // fall through
+ case WM_SYSCHAR:
return HandleChar(wParam, lParam, true /* isASCII */);
+ case WM_SYSKEYDOWN:
case WM_KEYDOWN:
return HandleKeyDown(wParam, lParam);
+ case WM_SYSKEYUP:
case WM_KEYUP:
return HandleKeyUp(wParam, lParam);
int sel = -1;
switch ( param )
{
+ case CBN_SELENDOK:
case CBN_SELCHANGE:
sel = GetSelection();
- if ( sel > -1 )
+
+ // we may sometimes get 2 CBN_SELCHANGE events or a CBN_SELENDOK
+ // before CBN_SELCHANGE with the same index when the user selects
+ // an item in the combobox -- ignore duplicates
+ if ( sel > -1 && sel != m_selectionOld )
{
- value = GetString(sel);
+ m_selectionOld = sel;
+
+ // GetValue() would still return the old value from here but
+ // according to the docs we should return the new value if the
+ // user calls it in his event handler, so update internal
+ // m_value
+ m_value = GetString(sel);
wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
event.SetInt(sel);
event.SetEventObject(this);
- event.SetString(value);
+ event.SetString(m_value);
ProcessCommand(event);
}
- else
+ else // no valid selection
{
+ m_selectionOld = sel;
+
+ // hence no EVT_TEXT neither
break;
}
// want the new one)
if ( sel == -1 )
{
- value = GetValue();
+ m_value = wxGetWindowText(GetHwnd());
+ m_selectionOld = -1;
}
else // we're synthesizing text updated event from sel change
{
- // We need to retrieve the current selection because the user
- // may have changed it in the previous handler (for CBN_SELCHANGE
- // above).
+ // We need to retrieve the current selection because the
+ // user may have changed it in the previous handler (for
+ // CBN_SELCHANGE above).
sel = GetSelection();
if ( sel > -1 )
{
- value = GetString(sel);
+ m_value = GetString(sel);
}
- // we need to do this because the user code expects
- // wxComboBox::GetValue() to return the new value from
- // "text updated" handler but it hadn't been updated yet
- SetValue(value);
}
- event.SetString(value);
+ event.SetString(m_value);
event.SetEventObject(this);
ProcessCommand(event);
}
(style & ~wxBORDER_MASK) | wxBORDER_NONE, exstyle
);
+ // usually WS_TABSTOP is added by wxControl::MSWGetStyle() but as we're
+ // created hidden (see Create() above), it is not done for us but we still
+ // want to have this style
+ msStyle |= WS_TABSTOP;
+
// remove the style always added by wxChoice
msStyle &= ~CBS_DROPDOWNLIST;
SetStringSelection(value);
else
SetWindowText(GetHwnd(), value.c_str());
+
+ m_value = value;
+ m_selectionOld = GetSelection();
}
// Clipboard operations
void wxComboBox::Copy()
{
- SendMessage(GetHwnd(), WM_COPY, 0, 0L);
+ SendMessage(GetHwnd(), WM_COPY, 0, 0L);
}
void wxComboBox::Cut()
{
- SendMessage(GetHwnd(), WM_CUT, 0, 0L);
+ SendMessage(GetHwnd(), WM_CUT, 0, 0L);
}
void wxComboBox::Paste()
{
- SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
+ SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
+}
+
+void wxComboBox::Undo()
+{
+ if (CanUndo())
+ {
+ HWND hEditWnd = (HWND) GetEditHWND() ;
+ if ( hEditWnd )
+ ::SendMessage(hEditWnd, EM_UNDO, 0, 0);
+ }
+}
+
+void wxComboBox::Redo()
+{
+ if (CanUndo())
+ {
+ // Same as Undo, since Undo undoes the undo, i.e. a redo.
+ HWND hEditWnd = (HWND) GetEditHWND() ;
+ if ( hEditWnd )
+ ::SendMessage(hEditWnd, EM_UNDO, 0, 0);
+ }
+}
+
+void wxComboBox::SelectAll()
+{
+ SetSelection(0, GetLastPosition());
+}
+
+bool wxComboBox::CanUndo() const
+{
+ if (!IsEditable())
+ return false;
+
+ HWND hEditWnd = (HWND) GetEditHWND() ;
+ if ( hEditWnd )
+ return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0;
+ else
+ return false;
+}
+
+bool wxComboBox::CanRedo() const
+{
+ if (!IsEditable())
+ return false;
+
+ HWND hEditWnd = (HWND) GetEditHWND() ;
+ if ( hEditWnd )
+ return ::SendMessage(hEditWnd, EM_CANUNDO, 0, 0) != 0;
+ else
+ return false;
+}
+
+bool wxComboBox::HasSelection() const
+{
+ long from, to;
+ GetSelection(&from, &to);
+ return from != to;
+}
+
+bool wxComboBox::CanCopy() const
+{
+ // Can copy if there's a selection
+ return HasSelection();
+}
+
+bool wxComboBox::CanCut() const
+{
+ return IsEditable() && CanCopy() ;
+}
+
+bool wxComboBox::CanPaste() const
+{
+ if ( !IsEditable() )
+ return false;
+
+ // Standard edit control: check for straight text on clipboard
+ if ( !::OpenClipboard(GetHwndOf(wxTheApp->GetTopWindow())) )
+ return false;
+
+ bool isTextAvailable = ::IsClipboardFormatAvailable(CF_TEXT) != 0;
+ ::CloseClipboard();
+
+ return isTextAvailable;
+}
+
+bool wxComboBox::IsEditable() const
+{
+ return !HasFlag(wxCB_READONLY);
}
void wxComboBox::SetEditable(bool WXUNUSED(editable))
// setting insertion point doesn't make sense for read only comboboxes
if ( !(GetWindowStyle() & wxCB_READONLY) )
{
- long pos = GetLastPosition();
+ wxTextPos pos = GetLastPosition();
SetInsertionPoint(pos);
}
}
long wxComboBox::GetInsertionPoint() const
{
-#ifdef __WIN32__
- DWORD Pos=(DWORD)SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
- return Pos&0xFFFF;
-#else
- return 0;
-#endif
+ // CB_GETEDITSEL returns the index of the first character of the selection in
+ // its low-order word
+ DWORD pos= (DWORD)::SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
+ return LOWORD(pos);
}
-long wxComboBox::GetLastPosition() const
+wxTextPos wxComboBox::GetLastPosition() const
{
HWND hEditWnd = (HWND) GetEditHWND();
// Get number of characters in the last (only) line. We'll add this to the character
// index for the last line, 1st position.
- int lineLength = (int)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L);
+ wxTextPos lineLength = (wxTextPos)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L);
- return (long)(lineLength);
+ return lineLength;
}
void wxComboBox::Replace(long from, long to, const wxString& value)
void wxComboBox::SetSelection(long from, long to)
{
- HWND hWnd = GetHwnd();
- long fromChar = from;
- long toChar = to;
- // if from and to are both -1, it means
- // (in wxWidgets) that all text should be selected.
- // This translates into Windows convention
- if ((from == -1) && (to == -1))
+ // if from and to are both -1, it means (in wxWidgets) that all text should
+ // be selected, translate this into Windows convention
+ if ( (from == -1) && (to == -1) )
{
- fromChar = 0;
- toChar = -1;
+ from = 0;
}
- if ( SendMessage(hWnd, CB_SETEDITSEL, (WPARAM)0, (LPARAM)MAKELONG(fromChar, toChar)) == CB_ERR )
+ if ( SendMessage(GetHwnd(), CB_SETEDITSEL,
+ 0, (LPARAM)MAKELONG(from, to)) == CB_ERR )
{
wxLogDebug(_T("CB_SETEDITSEL failed"));
}
}
+void wxComboBox::GetSelection(long* from, long* to) const
+{
+ DWORD dwStart, dwEnd;
+ if ( ::SendMessage(GetHwnd(), CB_GETEDITSEL,
+ (WPARAM)&dwStart, (LPARAM)&dwEnd) == CB_ERR )
+ {
+ *from =
+ *to = 0;
+ }
+ else
+ {
+ *from = dwStart;
+ *to = dwEnd;
+ }
+}
+
+int wxComboBox::GetSelection() const
+{
+ return wxChoice::GetSelection();
+}
+
+// ----------------------------------------------------------------------------
+// standard event handling
+// ----------------------------------------------------------------------------
+
+void wxComboBox::OnCut(wxCommandEvent& WXUNUSED(event))
+{
+ Cut();
+}
+
+void wxComboBox::OnCopy(wxCommandEvent& WXUNUSED(event))
+{
+ Copy();
+}
+
+void wxComboBox::OnPaste(wxCommandEvent& WXUNUSED(event))
+{
+ Paste();
+}
+
+void wxComboBox::OnUndo(wxCommandEvent& WXUNUSED(event))
+{
+ Undo();
+}
+
+void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
+{
+ Redo();
+}
+
+void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
+{
+ long from, to;
+ GetSelection(& from, & to);
+ if (from != -1 && to != -1)
+ Remove(from, to);
+}
+
+void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
+{
+ SetSelection(-1, -1);
+}
+
+void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
+{
+ event.Enable( CanCut() );
+}
+
+void wxComboBox::OnUpdateCopy(wxUpdateUIEvent& event)
+{
+ event.Enable( CanCopy() );
+}
+
+void wxComboBox::OnUpdatePaste(wxUpdateUIEvent& event)
+{
+ event.Enable( CanPaste() );
+}
+
+void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
+{
+ event.Enable( CanUndo() );
+}
+
+void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
+{
+ event.Enable( CanRedo() );
+}
+
+void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
+{
+ event.Enable(HasSelection() && IsEditable()) ;
+}
+
+void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
+{
+ event.Enable(GetLastPosition() > 0);
+}
+
#endif // wxUSE_COMBOBOX
projects / wxWidgets.git / blobdiff