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 #include "wx/dynlib.h"
  34
  35 #include "wx/msw/private.h"
  36
  37 #ifndef SHACF_FILESYS_ONLY
  38     #define SHACF_FILESYS_ONLY 0x00000010
  39 #endif
  40
  41 #define GetEditHwnd() ((HWND)(GetEditHWND()))
  42
  43 // ============================================================================
  44 // wxTextEntry implementation
  45 // ============================================================================
  46
  47 void wxTextEntry::WriteText(const wxString& text)
  48 {
  49     ::SendMessage(GetEditHwnd(), EM_REPLACESEL, 0, (LPARAM)text.wx_str());
  50 }
  51
  52 wxString wxTextEntry::GetValue() const
  53 {
  54     return wxGetWindowText(GetEditHWND());
  55 }
  56
  57 void wxTextEntry::Remove(long from, long to)
  58 {
  59     DoSetSelection(from, to, SetSel_NoScroll);
  60     WriteText(wxString());
  61 }
  62
  63 void wxTextEntry::Copy()
  64 {
  65     ::SendMessage(GetEditHwnd(), WM_COPY, 0, 0);
  66 }
  67
  68 void wxTextEntry::Cut()
  69 {
  70     ::SendMessage(GetEditHwnd(), WM_CUT, 0, 0);
  71 }
  72
  73 void wxTextEntry::Paste()
  74 {
  75     ::SendMessage(GetEditHwnd(), WM_PASTE, 0, 0);
  76 }
  77
  78 void wxTextEntry::Undo()
  79 {
  80     ::SendMessage(GetEditHwnd(), EM_UNDO, 0, 0);
  81 }
  82
  83 void wxTextEntry::Redo()
  84 {
  85     // same as Undo, since Undo undoes the undo
  86     Undo();
  87     return;
  88 }
  89
  90 bool wxTextEntry::CanUndo() const
  91 {
  92     return ::SendMessage(GetEditHwnd(), EM_CANUNDO, 0, 0) != 0;
  93 }
  94
  95 bool wxTextEntry::CanRedo() const
  96 {
  97     // see comment in Redo()
  98     return CanUndo();
  99 }
 100
 101 void wxTextEntry::SetInsertionPoint(long pos)
 102 {
 103     // be careful to call DoSetSelection() which is overridden in wxTextCtrl
 104     // and not just SetSelection() here
 105     DoSetSelection(pos, pos);
 106 }
 107
 108 long wxTextEntry::GetInsertionPoint() const
 109 {
 110     long from;
 111     GetSelection(&from, NULL);
 112     return from;
 113 }
 114
 115 long wxTextEntry::GetLastPosition() const
 116 {
 117     return ::SendMessage(GetEditHwnd(), EM_LINELENGTH, 0, 0);
 118 }
 119
 120 void wxTextEntry::DoSetSelection(long from, long to, int WXUNUSED(flags))
 121 {
 122     // if from and to are both -1, it means (in wxWidgets) that all text should
 123     // be selected, translate this into Windows convention
 124     if ( (from == -1) && (to == -1) )
 125     {
 126         from = 0;
 127     }
 128
 129     ::SendMessage(GetEditHwnd(), EM_SETSEL, from, to);
 130 }
 131
 132 void wxTextEntry::GetSelection(long *from, long *to) const
 133 {
 134     DWORD dwStart, dwEnd;
 135     ::SendMessage(GetEditHwnd(), EM_GETSEL, (WPARAM)&dwStart, (LPARAM)&dwEnd);
 136
 137     if ( from )
 138         *from = dwStart;
 139     if ( to )
 140         *to = dwEnd;
 141 }
 142
 143 bool wxTextEntry::AutoCompleteFileNames()
 144 {
 145     typedef HRESULT (WINAPI *SHAutoComplete_t)(HWND, DWORD);
 146     static SHAutoComplete_t s_pfnSHAutoComplete = (SHAutoComplete_t)-1;
 147     static wxDynamicLibrary s_dllShlwapi;
 148     if ( s_pfnSHAutoComplete == (SHAutoComplete_t)-1 )
 149     {
 150         wxLogNull noLog;
 151
 152         if ( !s_dllShlwapi.Load(_T("shlwapi.dll"), wxDL_VERBATIM) )
 153         {
 154             s_pfnSHAutoComplete = NULL;
 155         }
 156         else
 157         {
 158             wxDL_INIT_FUNC(s_pfn, SHAutoComplete, s_dllShlwapi);
 159         }
 160     }
 161
 162     if ( !s_pfnSHAutoComplete )
 163         return false;
 164
 165     HRESULT hr = (*s_pfnSHAutoComplete)(GetEditHwnd(), SHACF_FILESYS_ONLY);
 166     if ( FAILED(hr) )
 167     {
 168         wxLogApiError(_T("SHAutoComplete()"), hr);
 169
 170         return false;
 171     }
 172
 173     return true;
 174 }
 175
 176 bool wxTextEntry::IsEditable() const
 177 {
 178     return !(::GetWindowLong(GetEditHwnd(), GWL_STYLE) & ES_READONLY);
 179 }
 180
 181 void wxTextEntry::SetEditable(bool editable)
 182 {
 183     ::SendMessage(GetEditHwnd(), EM_SETREADONLY, !editable, 0);
 184 }
 185
 186 void wxTextEntry::SetMaxLength(unsigned long len)
 187 {
 188     if ( len >= 0xffff )
 189     {
 190         // this will set it to a platform-dependent maximum (much more
 191         // than 64Kb under NT)
 192         len = 0;
 193     }
 194
 195     ::SendMessage(GetEditHwnd(), EM_LIMITTEXT, len, 0);
 196 }
 197
 198 #endif // wxUSE_TEXTCTRL || wxUSE_COMBOBOX