Spelling corrections

[wxWidgets.git] / src / msw / textctrl.cpp

diff --git a/src/msw/textctrl.cpp b/src/msw/textctrl.cpp
index c1975d4c5192b5518a3a82a8fa7ae0c3fb027974..18912b2bd1425e23d9b1e2b97668394cc8a11829 100644 (file)
--- a/src/msw/textctrl.cpp
+++ b/src/msw/textctrl.cpp
@@ -102,6 +102,36 @@ IMPLEMENT_DYNAMIC_CLASS(wxRichEditModule, wxModule)
 
 #endif // wxUSE_RICHEDIT
 
 
 #endif // wxUSE_RICHEDIT
 

+// a small class used to set m_updatesCount to 0 (to filter duplicate events if
+// necessary) and to reset it back to -1 afterwards
+class UpdatesCountFilter
+{
+public:
+    UpdatesCountFilter(int& count)
+        : m_count(count)
+    {
+        wxASSERT_MSG( m_count == -1, _T("wrong initial m_updatesCount value") );
+
+        m_count = 0;
+    }
+
+    ~UpdatesCountFilter()
+    {
+        m_count = -1;
+    }
+
+    // return true if an event has been received
+    bool GotUpdate() const
+    {
+        return m_count == 1;
+    }
+
+private:
+    int& m_count;
+
+    DECLARE_NO_COPY_CLASS(UpdatesCountFilter)
+};
+

 // ----------------------------------------------------------------------------
 // event tables and other macros
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // event tables and other macros
 // ----------------------------------------------------------------------------


@@ -218,17 +248,14 @@ void wxTextCtrl::Init()
 #endif // wxUSE_RICHEDIT
 
     m_privateContextMenu = NULL;
 #endif // wxUSE_RICHEDIT
 
     m_privateContextMenu = NULL;

-    m_suppressNextUpdate = false;
+    m_updatesCount = -1;

     m_isNativeCaretShown = true;
     m_isNativeCaretShown = true;

+    m_isCaretAtEnd = true;

 }
 
 wxTextCtrl::~wxTextCtrl()
 {
 }
 
 wxTextCtrl::~wxTextCtrl()
 {

-    if (m_privateContextMenu)
-    {
-        delete m_privateContextMenu;
-        m_privateContextMenu = NULL;
-    }
+    delete m_privateContextMenu;

 }
 
 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
 }
 
 bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,


@@ -346,8 +373,6 @@ bool wxTextCtrl::Create(wxWindow *parent, wxWindowID id,
     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
         return false;
 
     if ( !MSWCreateControl(windowClass, msStyle, pos, size, valueWin) )
         return false;
 

-    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
-

 #if wxUSE_RICHEDIT
     if ( IsRich() )
     {
 #if wxUSE_RICHEDIT
     if ( IsRich() )
     {


@@ -756,13 +781,8 @@ wxTextCtrl::StreamIn(const wxString& value,
     // the cast below is needed for broken (very) old mingw32 headers
     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 
     // the cast below is needed for broken (very) old mingw32 headers
     eds.pfnCallback = (EDITSTREAMCALLBACK)wxRichEditStreamIn;
 

-    // we're going to receive 2 EN_CHANGE notifications if we got any selection
-    // (same problem as in DoWriteText())
-    if ( selectionOnly && HasSelection() )
-    {
-        // so suppress one of them
-        m_suppressNextUpdate = true;
-    }
+    // same problem as in DoWriteText(): we can get multiple events here
+    UpdatesCountFilter ucf(m_updatesCount);

 
     ::SendMessage(GetHwnd(), EM_STREAMIN,
                   SF_TEXT |
 
     ::SendMessage(GetHwnd(), EM_STREAMIN,
                   SF_TEXT |


@@ -770,6 +790,8 @@ wxTextCtrl::StreamIn(const wxString& value,
                   (selectionOnly ? SFF_SELECTION : 0),
                   (LPARAM)&eds);
 
                   (selectionOnly ? SFF_SELECTION : 0),
                   (LPARAM)&eds);
 

+    wxASSERT_MSG( ucf.GotUpdate(), _T("EM_STREAMIN didn't send EN_UPDATE?") );
+

     if ( eds.dwError )
     {
         wxLogLastError(_T("EM_STREAMIN"));
     if ( eds.dwError )
     {
         wxLogLastError(_T("EM_STREAMIN"));


@@ -911,40 +933,22 @@ void wxTextCtrl::DoWriteText(const wxString& value, bool selectionOnly)
 #endif // wxUSE_RICHEDIT
     {
         // in some cases we get 2 EN_CHANGE notifications after the SendMessage
 #endif // wxUSE_RICHEDIT
     {
         // in some cases we get 2 EN_CHANGE notifications after the SendMessage

-        // call below which is confusing for the client code and so should be
-        // avoided
-        //
-        // these cases are: (a) plain EDIT controls if EM_REPLACESEL is used
-        // and there is a non empty selection currently and (b) rich text
-        // controls in any case
-        if (
-#if wxUSE_RICHEDIT
-            IsRich() ||
-#endif // wxUSE_RICHEDIT
-            (selectionOnly && HasSelection()) )
-        {
-            m_suppressNextUpdate = true;
-        }
+        // call (this happens for plain EDITs with EM_REPLACESEL and under some
+        // -- undetermined -- conditions with rich edit) and sometimes we don't
+        // get any events at all (plain EDIT with WM_SETTEXT), so ensure that
+        // we generate exactly one of them by ignoring all but the first one in
+        // SendUpdateEvent() and generating one ourselves if we hadn't got any
+        // notifications from Windows
+        UpdatesCountFilter ucf(m_updatesCount);

 
         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
                       0, (LPARAM)valueDos.c_str());
 
 
         ::SendMessage(GetHwnd(), selectionOnly ? EM_REPLACESEL : WM_SETTEXT,
                       0, (LPARAM)valueDos.c_str());
 

-        // OTOH, non rich text controls don't generate any events at all when
-        // we use WM_SETTEXT -- have to emulate them here
-        if ( !selectionOnly
-#if wxUSE_RICHEDIT
-                && !IsRich()
-#endif // wxUSE_RICHEDIT
-           )
+        if ( !ucf.GotUpdate() )

         {
         {

-            // Windows already sends an update event for single-line
-            // controls.
-            if ( m_windowStyle & wxTE_MULTILINE )
-                SendUpdateEvent();
+            SendUpdateEvent();

         }
     }
         }
     }

-
-    AdjustSpaceLimit();

 }
 
 void wxTextCtrl::AppendText(const wxString& text)
 }
 
 void wxTextCtrl::AppendText(const wxString& text)


@@ -954,7 +958,8 @@ void wxTextCtrl::AppendText(const wxString& text)
     WriteText(text);
 
 #if wxUSE_RICHEDIT
     WriteText(text);
 
 #if wxUSE_RICHEDIT

-    if ( IsMultiLine() && GetRichVersion() > 1 )
+    // don't do this if we're frozen, saves some time
+    if ( !IsFrozen() && IsMultiLine() && GetRichVersion() > 1 )

     {
         // setting the caret to the end and showing it simply doesn't work for
         // RichEdit 2.0 -- force it to still do what we want
     {
         // setting the caret to the end and showing it simply doesn't work for
         // RichEdit 2.0 -- force it to still do what we want


@@ -1084,6 +1089,8 @@ void wxTextCtrl::SetEditable(bool editable)
 void wxTextCtrl::SetInsertionPoint(long pos)
 {
     DoSetSelection(pos, pos);
 void wxTextCtrl::SetInsertionPoint(long pos)
 {
     DoSetSelection(pos, pos);

+
+    m_isCaretAtEnd = pos == GetLastPosition();

 }
 
 void wxTextCtrl::SetInsertionPointEnd()
 }
 
 void wxTextCtrl::SetInsertionPointEnd()


@@ -1093,8 +1100,11 @@ void wxTextCtrl::SetInsertionPointEnd()
     // if it doesn't actually move the caret anywhere and so the simple fact of
     // doing it results in horrible flicker when appending big amounts of text
     // to the control in a few chunks (see DoAddText() test in the text sample)
     // if it doesn't actually move the caret anywhere and so the simple fact of
     // doing it results in horrible flicker when appending big amounts of text
     // to the control in a few chunks (see DoAddText() test in the text sample)

-    if ( GetInsertionPoint() == GetLastPosition() )
+    if ( m_isCaretAtEnd || GetInsertionPoint() == GetLastPosition() )
+    {
+        m_isCaretAtEnd = true;

         return;
         return;

+    }

 
     long pos;
 
 
     long pos;
 


@@ -1212,7 +1222,7 @@ void wxTextCtrl::DoSetSelection(long from, long to, bool scrollCaret)
         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
     }
 
         ::SendMessage(hWnd, EM_SETSEL, (WPARAM)from, (LPARAM)to);
     }
 

-    if ( scrollCaret )
+    if ( scrollCaret && !IsFrozen() )

     {
 #if wxUSE_RICHEDIT
         // richedit 3.0 (i.e. the version living in riched20.dll distributed
     {
 #if wxUSE_RICHEDIT
         // richedit 3.0 (i.e. the version living in riched20.dll distributed


@@ -1473,6 +1483,9 @@ void wxTextCtrl::ShowPosition(long pos)
 
     if (linesToScroll != 0)
       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);
 
     if (linesToScroll != 0)
       (void)::SendMessage(hWnd, EM_LINESCROLL, (WPARAM)0, (LPARAM)linesToScroll);

+
+    // be pessimistic
+    m_isCaretAtEnd = false;

 }
 
 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const
 }
 
 long wxTextCtrl::GetLengthOfLineContainingPos(long pos) const


@@ -1549,6 +1562,9 @@ void wxTextCtrl::Undo()
     if (CanUndo())
     {
         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
     if (CanUndo())
     {
         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);

+
+        // it's not necessarily at the end any more
+        m_isCaretAtEnd = false;

     }
 }
 
     }
 }
 


@@ -1563,6 +1579,9 @@ void wxTextCtrl::Redo()
 #endif
         // Same as Undo, since Undo undoes the undo, i.e. a redo.
         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);
 #endif
         // Same as Undo, since Undo undoes the undo, i.e. a redo.
         ::SendMessage(GetHwnd(), EM_UNDO, 0, 0);

+
+        // it's not necessarily at the end any more
+        m_isCaretAtEnd = false;

     }
 }
 
     }
 }
 


@@ -1793,13 +1812,25 @@ WXLRESULT wxTextCtrl::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lPara
 
 bool wxTextCtrl::SendUpdateEvent()
 {
 
 bool wxTextCtrl::SendUpdateEvent()
 {

-    // is event reporting suspended?
-    if ( m_suppressNextUpdate )
+    switch ( m_updatesCount )

     {
     {

-        // do process the next one
-        m_suppressNextUpdate = false;
+        case 0:
+            // remember that we've got an update
+            m_updatesCount++;
+            break;

 
 

-        return false;
+        case 1:
+            // we had already sent one event since the last control modification
+            return false;
+
+        default:
+            wxFAIL_MSG( _T("unexpected wxTextCtrl::m_updatesCount value") );
+            // fall through
+
+        case -1:
+            // we hadn't updated the control ourselves, this event comes from
+            // the user, don't need to ignore it nor update the count
+            break;

     }
 
     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());
     }
 
     wxCommandEvent event(wxEVT_COMMAND_TEXT_UPDATED, GetId());


@@ -1848,38 +1879,12 @@ bool wxTextCtrl::MSWCommand(WXUINT param, WXWORD WXUNUSED(id))
     return true;
 }
 
     return true;
 }
 

-WXHBRUSH wxTextCtrl::OnCtlColor(WXHDC pDC, WXHWND WXUNUSED(pWnd), WXUINT WXUNUSED(nCtlColor),
-#if wxUSE_CTL3D
-                               WXUINT message,
-                               WXWPARAM wParam,
-                               WXLPARAM lParam
-#else
-                               WXUINT WXUNUSED(message),
-                               WXWPARAM WXUNUSED(wParam),
-                               WXLPARAM WXUNUSED(lParam)
-#endif
-    )
+WXHBRUSH wxTextCtrl::MSWControlColor(WXHDC hDC)

 {
 {

-#if wxUSE_CTL3D
-    if ( m_useCtl3D )
-    {
-        HBRUSH hbrush = Ctl3dCtlColorEx(message, wParam, lParam);
-        return (WXHBRUSH) hbrush;
-    }
-#endif // wxUSE_CTL3D
-
-    HDC hdc = (HDC)pDC;
-    wxColour colBack = GetBackgroundColour();
+    if ( !IsEnabled() && !HasFlag(wxTE_MULTILINE) )
+        return MSWControlColorDisabled(hDC);

 
 

-    if (!IsEnabled() && (GetWindowStyle() & wxTE_MULTILINE) == 0)
-        colBack = wxSystemSettings::GetColour(wxSYS_COLOUR_3DFACE);
-
-    ::SetBkColor(hdc, wxColourToRGB(colBack));
-    ::SetTextColor(hdc, wxColourToRGB(GetForegroundColour()));
-
-    wxBrush *brush = wxTheBrushList->FindOrCreateBrush(colBack, wxSOLID);
-
-    return (WXHBRUSH)brush->GetResourceHandle();
+    return wxTextCtrlBase::MSWControlColorSolid(hDC);

 }
 
 bool wxTextCtrl::AdjustSpaceLimit()
 }
 
 bool wxTextCtrl::AdjustSpaceLimit()


@@ -2457,10 +2462,13 @@ bool wxTextCtrl::SetDefaultStyle(const wxTextAttr& style)
     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
         return false;
 
     if ( !wxTextCtrlBase::SetDefaultStyle(style) )
         return false;
 

-    // we have to do this or the style wouldn't apply for the text typed by the
-    // user
-    long posLast = GetLastPosition();
-    SetStyle(posLast, posLast, m_defaultStyle);
+    if ( IsEditable() )
+    {
+        // we have to do this or the style wouldn't apply for the text typed by
+        // the user
+        long posLast = GetLastPosition();
+        SetStyle(posLast, posLast, m_defaultStyle);
+    }

 
     return true;
 }
 
     return true;
 }