/////////////////////////////////////////////////////////////////////////////
-// Name: msw/combobox.cpp
+// Name: src/msw/combobox.cpp
// Purpose: wxComboBox class
// Author: Julian Smart
// Modified by:
// headers
// ----------------------------------------------------------------------------
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma implementation "combobox.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#if wxUSE_COMBOBOX
+#include "wx/combobox.h"
+
#ifndef WX_PRECOMP
+ #include "wx/msw/wrapcctl.h" // include <commctrl.h> "properly"
#include "wx/settings.h"
#include "wx/log.h"
// for wxEVT_COMMAND_TEXT_ENTER
#include "wx/textctrl.h"
+ #include "wx/app.h"
+ #include "wx/brush.h"
#endif
-#include "wx/app.h"
-#include "wx/combobox.h"
-#include "wx/brush.h"
#include "wx/clipbrd.h"
+#include "wx/wupdlock.h"
#include "wx/msw/private.h"
#if wxUSE_TOOLTIPS
- #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
- #include <commctrl.h>
- #endif
#include "wx/tooltip.h"
#endif // wxUSE_TOOLTIPS
wxEND_FLAGS( wxComboBoxStyle )
-IMPLEMENT_DYNAMIC_CLASS_XTI(wxComboBox, wxControl,"wx/combobox.h")
+IMPLEMENT_DYNAMIC_CLASS_XTI(wxComboBox, wxChoice,"wx/combobox.h")
wxBEGIN_PROPERTIES_TABLE(wxComboBox)
wxEVENT_PROPERTY( Select , wxEVT_COMMAND_COMBOBOX_SELECTED , wxCommandEvent )
#else
-IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxChoice)
#endif
case WM_KEYUP:
case WM_KEYDOWN:
case WM_CHAR:
+ case WM_SYSCHAR:
+ case WM_SYSKEYDOWN:
+ case WM_SYSKEYUP:
case WM_SETFOCUS:
case WM_KILLFOCUS:
{
{
wxCHECK_MSG( win, 0, _T("should have a parent") );
- if ( win->GetWindowStyle() & wxPROCESS_ENTER )
+ if ( win->GetWindowStyle() & wxTE_PROCESS_ENTER )
{
// need to return a custom dlg code or we'll never get it
return DLGC_WANTMESSAGE;
}
}
break;
-
- // deal with tooltips here
-#if wxUSE_TOOLTIPS && defined(TTN_NEEDTEXT)
- case WM_NOTIFY:
- {
- wxCHECK_MSG( win, 0, _T("should have a parent") );
-
- NMHDR* hdr = (NMHDR *)lParam;
- if ( hdr->code == TTN_NEEDTEXT )
- {
- wxToolTip *tooltip = win->GetToolTip();
- if ( tooltip )
- {
- TOOLTIPTEXT *ttt = (TOOLTIPTEXT *)lParam;
- ttt->lpszText = (wxChar *)tooltip->GetTip().c_str();
- }
-
- // processed
- return 0;
- }
- }
- break;
-#endif // wxUSE_TOOLTIPS
}
return ::CallWindowProc(CASTWNDPROC gs_wndprocEdit, hWnd, message, wParam, lParam);
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 )
{
- case CB_SETCURSEL:
- // Selection was set with SetSelection. Update the value too.
- if ((int)wParam > GetCount())
- m_value = wxEmptyString;
- else
- m_value = GetString(wParam);
- m_selectionOld = -1;
- break;
+ case WM_SIZE:
+ // wxStaticBox can generate this message, when modifying the control's style.
+ // This causes the content of the combobox to be selected, for some reason.
+ case WM_STYLECHANGED:
+ {
+ // combobox selection sometimes spontaneously changes when its
+ // size changes, restore it to the old value if necessary
+ if ( !GetEditHWNDIfAvailable() )
+ break;
+
+ long fromOld, toOld;
+ GetSelection(&fromOld, &toOld);
+
+ // if an editable combobox has a not empty text not from the
+ // list, it tries to autocomplete it from the list when it is
+ // resized, but we don't want this to happen as it doesn't seem
+ // to make any sense, so we forcefully restore the old text
+ wxString textOld;
+ if ( !HasFlag(wxCB_READONLY) && GetCurrentSelection() == -1 )
+ textOld = GetValue();
+
+ // eliminate flickering during following hacks
+ wxWindowUpdateLocker lock(this);
+
+ WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam);
+
+ if ( !textOld.empty() && GetValue() != textOld )
+ SetLabel(textOld);
+
+ long fromNew, toNew;
+ GetSelection(&fromNew, &toNew);
+
+ if ( fromOld != fromNew || toOld != toNew )
+ {
+ SetSelection(fromOld, toOld);
+ }
+
+ return result;
+ }
}
return wxChoice::MSWWindowProc(nMsg, wParam, lParam);
// when Enter is pressed
if ( wParam == VK_RETURN )
{
+ if (SendMessage(GetHwnd(), CB_GETDROPPEDSTATE, 0, 0))
+ return false;
+
wxCommandEvent event(wxEVT_COMMAND_TEXT_ENTER, m_windowId);
- InitCommandEvent(event);
+
+ const int sel = GetSelection();
+ event.SetInt(sel);
event.SetString(GetValue());
- event.SetInt(GetSelection());
+ InitCommandEventWithItems(event, sel);
+
if ( ProcessCommand(event) )
{
// don't let the event through to the native control
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);
case WM_KILLFOCUS:
return HandleKillFocus((WXHWND)wParam);
+
+ case WM_CUT:
+ case WM_COPY:
+ case WM_PASTE:
+ return HandleClipboardEvent(msg);
}
return false;
}
-bool wxComboBox::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
+bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
{
- wxString value;
int sel = -1;
+ wxString value;
+
switch ( param )
{
+ case CBN_DROPDOWN:
+ // remember the last selection, just as wxChoice does
+ m_lastAcceptedSelection = GetCurrentSelection();
+ if ( m_lastAcceptedSelection == -1 )
+ {
+ // but unlike with wxChoice we may have no selection but still
+ // have some text and we should avoid erasing it if the drop
+ // down is cancelled (see #8474)
+ m_lastAcceptedSelection = wxID_NONE;
+ }
+ break;
+
case CBN_SELENDOK:
- case CBN_SELCHANGE:
- sel = GetSelection();
+#ifndef __SMARTPHONE__
+ // we need to reset this to prevent the selection from being undone
+ // by wxChoice, see wxChoice::MSWCommand() and comments there
+ m_lastAcceptedSelection = wxID_NONE;
+#endif
- // 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 )
- {
- m_selectionOld = sel;
+ // set these variables so that they could be also fixed in
+ // CBN_EDITCHANGE below
+ sel = GetSelection();
+ value = GetStringSelection();
- // 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);
+ // this string is going to become the new combobox value soon but
+ // we need it to be done right now, otherwise the event handler
+ // could get a wrong value when it calls our GetValue()
+ ::SetWindowText(GetHwnd(), value.wx_str());
+ {
wxCommandEvent event(wxEVT_COMMAND_COMBOBOX_SELECTED, GetId());
event.SetInt(sel);
- event.SetEventObject(this);
- event.SetString(m_value);
- ProcessCommand(event);
- }
- else // no valid selection
- {
- m_selectionOld = sel;
+ event.SetString(value);
+ InitCommandEventWithItems(event, sel);
- // hence no EVT_TEXT neither
- break;
+ ProcessCommand(event);
}
// fall through: for compability with wxGTK, also send the text
// logical as the text does change)
case CBN_EDITCHANGE:
+ if ( m_allowTextEvents )
{
wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
- // if sel != -1, value was initialized above (and we can't use
- // GetValue() here as it would return the old selection and we
- // want the new one)
+ // if sel != -1, value was already initialized above
if ( sel == -1 )
{
- 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).
- sel = GetSelection();
- if ( sel > -1 )
- {
- m_value = GetString(sel);
- }
+ value = wxGetWindowText(GetHwnd());
}
- event.SetString(m_value);
- event.SetEventObject(this);
+ event.SetString(value);
+ InitCommandEventWithItems(event, sel);
+
ProcessCommand(event);
}
break;
+
+ default:
+ return wxChoice::MSWCommand(param, id);
}
- // there is no return value for the CBN_ notifications, so always return
- // false from here to pass the message to DefWindowProc()
- return false;
+ // skip wxChoice version as it would generate its own events for
+ // CBN_SELENDOK and also interfere with our handling of CBN_DROPDOWN
+ return true;
+}
+
+bool wxComboBox::MSWShouldPreProcessMessage(WXMSG *pMsg)
+{
+ // prevent command accelerators from stealing editing
+ // hotkeys when we have the focus
+ if (wxIsCtrlDown())
+ {
+ WPARAM vkey = pMsg->wParam;
+
+ switch (vkey)
+ {
+ case 'C':
+ case 'V':
+ case 'X':
+ case VK_INSERT:
+ case VK_DELETE:
+ case VK_HOME:
+ case VK_END:
+ return false;
+ }
+ }
+
+ return wxChoice::MSWShouldPreProcessMessage(pMsg);
+}
+
+WXHWND wxComboBox::GetEditHWNDIfAvailable() const
+{
+ // notice that a slightly safer alternative could be to use FindWindowEx()
+ // but it's not available under WinCE so just take the first child for now
+ // to keep one version of the code for all platforms and fix it later if
+ // problems are discovered
+
+ // we assume that the only child of the combobox is the edit window
+ return (WXHWND)::GetWindow(GetHwnd(), GW_CHILD);
}
WXHWND wxComboBox::GetEditHWND() const
{
// this function should not be called for wxCB_READONLY controls, it is
- // the callers responsability to check this
- wxASSERT_MSG( !(GetWindowStyle() & wxCB_READONLY),
+ // the callers responsibility to check this
+ wxASSERT_MSG( !HasFlag(wxCB_READONLY),
_T("read-only combobox doesn't have any edit control") );
- POINT pt;
- pt.x = pt.y = 4;
- HWND hwndEdit = ::ChildWindowFromPoint(GetHwnd(), pt);
- if ( !hwndEdit || hwndEdit == GetHwnd() )
- {
- wxFAIL_MSG(_T("not read only combobox without edit control?"));
- }
+ WXHWND hWndEdit = GetEditHWNDIfAvailable();
+ wxASSERT_MSG( hWndEdit, _T("combobox without edit control?") );
- return (WXHWND)hwndEdit;
+ return hWndEdit;
}
// ----------------------------------------------------------------------------
// edit control, we must subclass it as well
if ( !(style & wxCB_READONLY) )
{
- gs_wndprocEdit = wxSetWindowProc((HWND)GetEditHWND(),
- wxComboEditWndProc);
+ gs_wndprocEdit = wxSetWindowProc((HWND)GetEditHWND(), wxComboEditWndProc);
}
// and finally, show the control
(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;
}
// ----------------------------------------------------------------------------
-// wxComboBox geometry
+// wxComboBox text control-like methods
// ----------------------------------------------------------------------------
-void
-wxComboBox::DoSetSize(int x, int y, int width, int height, int sizeFlags)
+wxString wxComboBox::GetValue() const
{
- // work around a Windows bug (search for "Bug in Windows Combobox" in
- // Google Groups): resizing the combobox changes the selection in it
- long fromOld, toOld;
- GetSelection(&fromOld, &toOld);
-
- wxChoice::DoSetSize(x, y, width, height, sizeFlags);
-
- long fromNew, toNew;
- GetSelection(&fromNew, &toNew);
-
- if ( fromOld != fromNew || toOld != toNew )
- {
- SetSelection(fromOld, toOld);
- }
+ return HasFlag(wxCB_READONLY) ? GetStringSelection()
+ : wxTextEntry::GetValue();
}
-// ----------------------------------------------------------------------------
-// wxComboBox text control-like methods
-// ----------------------------------------------------------------------------
-
void wxComboBox::SetValue(const wxString& value)
{
if ( HasFlag(wxCB_READONLY) )
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);
+ wxTextEntry::SetValue(value);
}
-void wxComboBox::Cut()
+void wxComboBox::Clear()
{
- SendMessage(GetHwnd(), WM_CUT, 0, 0L);
+ wxChoice::Clear();
+ if ( !HasFlag(wxCB_READONLY) )
+ wxTextEntry::Clear();
}
-void wxComboBox::Paste()
+void wxComboBox::GetSelection(long *from, long *to) const
{
- SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
-}
-
-void wxComboBox::Undo()
-{
- if (CanUndo())
+ if ( !HasFlag(wxCB_READONLY) )
{
- HWND hEditWnd = (HWND) GetEditHWND() ;
- if ( hEditWnd )
- ::SendMessage(hEditWnd, EM_UNDO, 0, 0);
+ wxTextEntry::GetSelection(from, to);
}
-}
-
-void wxComboBox::Redo()
-{
- if (CanUndo())
+ else // text selection doesn't make sense for read only comboboxes
{
- // Same as Undo, since Undo undoes the undo, i.e. a redo.
- HWND hEditWnd = (HWND) GetEditHWND() ;
- if ( hEditWnd )
- ::SendMessage(hEditWnd, EM_UNDO, 0, 0);
+ if ( from )
+ *from = -1;
+ if ( to )
+ *to = -1;
}
}
-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))
-{
- // Can't implement in MSW?
-// HWND hWnd = GetHwnd();
-// SendMessage(hWnd, EM_SETREADONLY, (WPARAM)!editable, (LPARAM)0L);
-}
-
-void wxComboBox::SetInsertionPoint(long pos)
-{
- if ( GetWindowStyle() & wxCB_READONLY )
- return;
-
-#ifdef __WIN32__
- HWND hWnd = GetHwnd();
- ::SendMessage(hWnd, CB_SETEDITSEL, 0, MAKELPARAM(pos, pos));
- HWND hEditWnd = (HWND) GetEditHWND() ;
- if ( hEditWnd )
- {
- // Scroll insertion point into view
- SendMessage(hEditWnd, EM_SCROLLCARET, (WPARAM)0, (LPARAM)0);
- // Why is this necessary? (Copied from wxTextCtrl::SetInsertionPoint)
- SendMessage(hEditWnd, EM_REPLACESEL, 0, (LPARAM) wxEmptyString);
- }
-#endif // __WIN32__
-}
-
-void wxComboBox::SetInsertionPointEnd()
-{
- // setting insertion point doesn't make sense for read only comboboxes
- if ( !(GetWindowStyle() & wxCB_READONLY) )
- {
- wxTextPos pos = GetLastPosition();
- SetInsertionPoint(pos);
- }
-}
-
-long wxComboBox::GetInsertionPoint() const
-{
- // CB_GETEDITSEL returns the index of the last character after selection in
- // its high-order word
- DWORD pos= (DWORD)::SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
-
- return HIWORD(pos);
-}
-
-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.
- wxTextPos lineLength = (wxTextPos)SendMessage(hEditWnd, EM_LINELENGTH, (WPARAM) 0, (LPARAM)0L);
-
- return lineLength;
-}
-
-void wxComboBox::Replace(long from, long to, const wxString& value)
-{
-#if wxUSE_CLIPBOARD
- Remove(from, to);
-
- // Now replace with 'value', by pasting.
- wxSetClipboardData(wxDF_TEXT, (wxObject *)(const wxChar *)value, 0, 0);
-
- // Paste into edit control
- SendMessage(GetHwnd(), WM_PASTE, (WPARAM)0, (LPARAM)0L);
-#endif
-}
-
-void wxComboBox::Remove(long from, long to)
-{
- // Set selection and remove it
- SetSelection(from, to);
- SendMessage(GetHwnd(), WM_CUT, (WPARAM)0, (LPARAM)0);
-}
-
-void wxComboBox::SetSelection(long from, long to)
-{
- // 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) )
- {
- from = 0;
- }
-
- 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();
+ return !HasFlag(wxCB_READONLY) && wxTextEntry::IsEditable();
}
// ----------------------------------------------------------------------------
void wxComboBox::OnDelete(wxCommandEvent& WXUNUSED(event))
{
- long from, to;
- GetSelection(& from, & to);
- if (from != -1 && to != -1)
- Remove(from, to);
+ RemoveSelection();
}
void wxComboBox::OnSelectAll(wxCommandEvent& WXUNUSED(event))
{
- SetSelection(-1, -1);
+ SelectAll();
}
void wxComboBox::OnUpdateCut(wxUpdateUIEvent& event)
void wxComboBox::OnUpdateUndo(wxUpdateUIEvent& event)
{
- event.Enable( CanUndo() );
+ event.Enable( IsEditable() && CanUndo() );
}
void wxComboBox::OnUpdateRedo(wxUpdateUIEvent& event)
{
- event.Enable( CanRedo() );
+ event.Enable( IsEditable() && CanRedo() );
}
void wxComboBox::OnUpdateDelete(wxUpdateUIEvent& event)
{
- event.Enable(HasSelection() && IsEditable()) ;
+ event.Enable(IsEditable() && HasSelection());
}
void wxComboBox::OnUpdateSelectAll(wxUpdateUIEvent& event)
{
- event.Enable(GetLastPosition() > 0);
+ event.Enable(IsEditable() && !wxTextEntry::IsEmpty());
}
-#endif // wxUSE_COMBOBOX
+#if wxUSE_TOOLTIPS
+
+void wxComboBox::DoSetToolTip(wxToolTip *tip)
+{
+ wxChoice::DoSetToolTip(tip);
+ if ( tip && !HasFlag(wxCB_READONLY) )
+ tip->Add(GetEditHWND());
+}
+
+#endif // wxUSE_TOOLTIPS
+
+#endif // wxUSE_COMBOBOX
projects / wxWidgets.git / blobdiff