src/msw/textentry.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/textentry.cpp
   3 // Purpose:     wxTextEntry implementation for wxMSW
   4 // Author:      Vadim Zeitlin
   5 // Created:     2007-09-26
   6 // RCS-ID:      $Id$
   7 // Copyright:   (c) 2007 Vadim Zeitlin <vadim@wxwindows.org>
   8 // Licence:     wxWindows licence
   9 ///////////////////////////////////////////////////////////////////////////////
  10
  11 // ============================================================================
  12 // declarations
  13 // ============================================================================
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 // for compilers that support precompilation, includes "wx.h".
  20 #include "wx/wxprec.h"
  21
  22 #ifdef __BORLANDC__
  23     #pragma hdrstop
  24 #endif
  25
  26 #ifndef WX_PRECOMP
  27     #include "wx/string.h"
  28 #endif // WX_PRECOMP
  29
  30 #if wxUSE_TEXTCTRL || wxUSE_COMBOBOX
  31
  32 #include "wx/textentry.h"
  33
  34 #include "wx/msw/private.h"
  35
  36 #define GetEditHwnd() ((HWND)(GetEditHWND()))
  37
  38 // ============================================================================
  39 // wxTextEntry implementation
  40 // ============================================================================
  41
  42 void wxTextEntry::WriteText(const wxString& text)
  43 {
  44     ::SendMessage(GetEditHwnd(), EM_REPLACESEL, 0, (LPARAM)text.wx_str());
  45 }
  46
  47 wxString wxTextEntry::GetValue() const
  48 {
  49     return wxGetWindowText(GetEditHWND());
  50 }
  51
  52 void wxTextEntry::Remove(long from, long to)
  53 {
  54     DoSetSelection(from, to, SetSel_NoScroll);
  55     WriteText(wxString());
  56 }
  57
  58 void wxTextEntry::Copy()
  59 {
  60     ::SendMessage(GetEditHwnd(), WM_COPY, 0, 0);
  61 }
  62
  63 void wxTextEntry::Cut()
  64 {
  65     ::SendMessage(GetEditHwnd(), WM_CUT, 0, 0);
  66 }
  67
  68 void wxTextEntry::Paste()
  69 {
  70     ::SendMessage(GetEditHwnd(), WM_PASTE, 0, 0);
  71 }
  72
  73 void wxTextEntry::Undo()
  74 {
  75     ::SendMessage(GetEditHwnd(), EM_UNDO, 0, 0);
  76 }
  77
  78 void wxTextEntry::Redo()
  79 {
  80     // same as Undo, since Undo undoes the undo
  81     Undo();
  82     return;
  83 }
  84
  85 bool wxTextEntry::CanUndo() const
  86 {
  87     return ::SendMessage(GetEditHwnd(), EM_CANUNDO, 0, 0) != 0;
  88 }
  89
  90 bool wxTextEntry::CanRedo() const
  91 {
  92     // see comment in Redo()
  93     return CanUndo();
  94 }
  95
  96 void wxTextEntry::SetInsertionPoint(long pos)
  97 {
  98     // be careful to call DoSetSelection() which is overridden in wxTextCtrl
  99     // and not just SetSelection() here
 100     DoSetSelection(pos, pos);
 101 }
 102
 103 long wxTextEntry::GetInsertionPoint() const
 104 {
 105     long from;
 106     GetSelection(&from, NULL);
 107     return from;
 108 }
 109
 110 long wxTextEntry::GetLastPosition() const
 111 {
 112     return ::SendMessage(GetEditHwnd(), EM_LINELENGTH, 0, 0);
 113 }
 114
 115 void wxTextEntry::DoSetSelection(long from, long to, int WXUNUSED(flags))
 116 {
 117     // if from and to are both -1, it means (in wxWidgets) that all text should
 118     // be selected, translate this into Windows convention
 119     if ( (from == -1) && (to == -1) )
 120     {
 121         from = 0;
 122     }
 123
 124     ::SendMessage(GetEditHwnd(), EM_SETSEL, from, to);
 125 }
 126
 127 void wxTextEntry::GetSelection(long *from, long *to) const
 128 {
 129     DWORD dwStart, dwEnd;
 130     ::SendMessage(GetEditHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 131
 132     if ( from )
 133         *from = dwStart;
 134     if ( to )
 135         *to = dwEnd;
 136 }
 137
 138 bool wxTextEntry::IsEditable() const
 139 {
 140     return !(::GetWindowLong(GetEditHwnd(), GWL_STYLE) & ES_READONLY);
 141 }
 142
 143 void wxTextEntry::SetEditable(bool editable)
 144 {
 145     ::SendMessage(GetEditHwnd(), EM_SETREADONLY, !editable, 0);
 146 }
 147
 148 void wxTextEntry::SetMaxLength(unsigned long len)
 149 {
 150     if ( len >= 0xffff )
 151     {
 152         // this will set it to a platform-dependent maximum (much more
 153         // than 64Kb under NT)
 154         len = 0;
 155     }
 156
 157     ::SendMessage(GetEditHwnd(), EM_LIMITTEXT, len, 0);
 158 }
 159
 160 #endif // wxUSE_TEXTCTRL || wxUSE_COMBOBOX