X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5996fb421dc956768bc9a0031051f4c890f6ffa1..29dbfacee2a6bc6978d6224efea9a31a1a5a2649:/src/msw/combobox.cpp

diff --git a/src/msw/combobox.cpp b/src/msw/combobox.cpp
index d85ef7e887..5faed26cb5 100644
--- a/src/msw/combobox.cpp
+++ b/src/msw/combobox.cpp
@@ -1,5 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        msw/combobox.cpp
+// Name:        src/msw/combobox.cpp
 // Purpose:     wxComboBox class
 // Author:      Julian Smart
 // Modified by:
@@ -26,23 +26,22 @@
 
 #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/msw/private.h"
 
 #if wxUSE_TOOLTIPS
-    #if !defined(__GNUWIN32_OLD__) || defined(__CYGWIN10__)
-        #include <commctrl.h>
-    #endif
     #include "wx/tooltip.h"
 #endif // wxUSE_TOOLTIPS
 
@@ -88,7 +87,7 @@ wxBEGIN_FLAGS( wxComboBoxStyle )
 
 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 )
@@ -109,7 +108,7 @@ wxCONSTRUCTOR_5( wxComboBox , wxWindow* , Parent , wxWindowID , Id , wxString ,
 
 #else
 
-IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxControl)
+IMPLEMENT_DYNAMIC_CLASS(wxComboBox, wxChoice)
 
 #endif
 
@@ -199,36 +198,13 @@ LRESULT APIENTRY _EXPORT wxComboEditWndProc(HWND hWnd,
             {
                 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);
@@ -245,15 +221,6 @@ WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
 
     switch ( nMsg )
     {
-        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:
         // wxStaticBox can generate this message, when modifying the control's style.
         // This causes the content of the combobox to be selected, for some reason.
@@ -261,6 +228,9 @@ WXLRESULT wxComboBox::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
             {
                 // 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);
                 WXLRESULT result = wxChoice::MSWWindowProc(nMsg, wParam, lParam);
@@ -289,10 +259,16 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM 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
@@ -319,6 +295,11 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 
         case WM_KILLFOCUS:
             return HandleKillFocus((WXHWND)wParam);
+
+        case WM_CUT:
+        case WM_COPY:
+        case WM_PASTE:
+            return HandleClipboardEvent(msg);
     }
 
     return false;
@@ -326,39 +307,47 @@ bool wxComboBox::MSWProcessEditMsg(WXUINT msg, WXWPARAM wParam, WXLPARAM lParam)
 
 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
@@ -366,31 +355,19 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
             // 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;
@@ -399,28 +376,57 @@ bool wxComboBox::MSWCommand(WXUINT param, WXWORD id)
             return wxChoice::MSWCommand(param, id);
     }
 
-    // let the def window proc have it by returning false, but do not pass the
-    // message we've already handled here (notably CBN_SELCHANGE) to the base
-    // class as it would generate another event for them
-    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;
 }
 
 // ----------------------------------------------------------------------------
@@ -456,8 +462,7 @@ bool wxComboBox::Create(wxWindow *parent, wxWindowID id,
     // 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
@@ -517,242 +522,45 @@ WXDWORD wxComboBox::MSWGetStyle(long style, WXDWORD *exstyle) const
 // wxComboBox text control-like methods
 // ----------------------------------------------------------------------------
 
+wxString wxComboBox::GetValue() const
+{
+    return HasFlag(wxCB_READONLY) ? GetStringSelection()
+                                  : wxTextEntry::GetValue();
+}
+
 void wxComboBox::SetValue(const wxString& value)
 {
     if ( HasFlag(wxCB_READONLY) )
         SetStringSelection(value);
     else
-        SetWindowText(GetHwnd(), value.c_str());
-
-    m_value = value;
-    m_selectionOld = GetSelection();
+        wxTextEntry::SetValue(value);
 }
 
-// Clipboard operations
-void wxComboBox::Copy()
-{
-    SendMessage(GetHwnd(), WM_COPY, 0, 0L);
-}
-
-void wxComboBox::Cut()
-{
-    SendMessage(GetHwnd(), WM_CUT, 0, 0L);
-}
-
-void wxComboBox::Paste()
+void wxComboBox::Clear()
 {
-    SendMessage(GetHwnd(), WM_PASTE, 0, 0L);
+    wxChoice::Clear();
+    if ( !HasFlag(wxCB_READONLY) )
+        wxTextEntry::Clear();
 }
 
-void wxComboBox::Undo()
+void wxComboBox::GetSelection(long *from, long *to) const
 {
-    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 first character of the selection in
-    // its low-order word
-    DWORD pos= (DWORD)::SendMessage(GetHwnd(), CB_GETEDITSEL, 0, 0L);
-    return LOWORD(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);
-#else
-    wxUnusedVar(from);
-    wxUnusedVar(to);
-    wxUnusedVar(value);
-#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();
-}
-
-void wxComboBox::Clear()
-{
-    wxChoice::Clear();
-    m_selectionOld = -1;
-    m_value.clear();
+    return !HasFlag(wxCB_READONLY) && wxTextEntry::IsEditable();
 }
 
 // ----------------------------------------------------------------------------
@@ -786,15 +594,12 @@ void wxComboBox::OnRedo(wxCommandEvent& WXUNUSED(event))
 
 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)
@@ -814,23 +619,34 @@ void wxComboBox::OnUpdatePaste(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