src/msw/dirdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/msw/dirdlg.cpp
   3 // Purpose:     wxDirDialog
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     01/02/97
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_DIRDLG
  28
  29 #if wxUSE_OLE && !defined(__GNUWIN32_OLD__) && (!defined(__WXWINCE__) || (defined(__HANDHELDPC__) && (_WIN32_WCE >= 500)))
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/utils.h"
  33     #include "wx/dialog.h"
  34     #include "wx/dirdlg.h"
  35     #include "wx/log.h"
  36     #include "wx/app.h"     // for GetComCtl32Version()
  37 #endif
  38
  39 #include "wx/msw/private.h"
  40 #include "wx/msw/wrapshl.h"
  41
  42 // ----------------------------------------------------------------------------
  43 // constants
  44 // ----------------------------------------------------------------------------
  45
  46 #ifndef BIF_NEWDIALOGSTYLE
  47     #define BIF_NEWDIALOGSTYLE 0x0040
  48 #endif
  49
  50 #ifndef BIF_NONEWFOLDERBUTTON
  51     #define BIF_NONEWFOLDERBUTTON  0x0200
  52 #endif
  53
  54 #ifndef BIF_EDITBOX
  55     #define BIF_EDITBOX 16
  56 #endif
  57
  58 // ----------------------------------------------------------------------------
  59 // wxWidgets macros
  60 // ----------------------------------------------------------------------------
  61
  62 IMPLEMENT_CLASS(wxDirDialog, wxDialog)
  63
  64 // ----------------------------------------------------------------------------
  65 // private functions prototypes
  66 // ----------------------------------------------------------------------------
  67
  68 // the callback proc for the dir dlg
  69 static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp,
  70                                        LPARAM pData);
  71
  72
  73 // ============================================================================
  74 // implementation
  75 // ============================================================================
  76
  77 // ----------------------------------------------------------------------------
  78 // wxDirDialog
  79 // ----------------------------------------------------------------------------
  80
  81 wxDirDialog::wxDirDialog(wxWindow *parent,
  82                          const wxString& message,
  83                          const wxString& defaultPath,
  84                          long style,
  85                          const wxPoint& WXUNUSED(pos),
  86                          const wxSize& WXUNUSED(size),
  87                          const wxString& WXUNUSED(name))
  88 {
  89     m_message = message;
  90     m_parent = parent;
  91
  92     SetStyle(style);
  93     SetPath(defaultPath);
  94 }
  95
  96 void wxDirDialog::SetPath(const wxString& path)
  97 {
  98     m_path = path;
  99
 100     // SHBrowseForFolder doesn't like '/'s nor the trailing backslashes
 101     m_path.Replace(_T("/"), _T("\\"));
 102     if ( !m_path.empty() )
 103     {
 104         while ( *(m_path.end() - 1) == _T('\\') )
 105         {
 106             m_path.erase(m_path.length() - 1);
 107         }
 108
 109         // but the root drive should have a trailing slash (again, this is just
 110         // the way the native dialog works)
 111         if ( *(m_path.end() - 1) == _T(':') )
 112         {
 113             m_path += _T('\\');
 114         }
 115     }
 116 }
 117
 118 int wxDirDialog::ShowModal()
 119 {
 120     wxWindow *parent = GetParent();
 121
 122     BROWSEINFO bi;
 123     bi.hwndOwner      = parent ? GetHwndOf(parent) : NULL;
 124     bi.pidlRoot       = NULL;
 125     bi.pszDisplayName = NULL;
 126     // Please don't change this without checking it compiles
 127     // with eVC++ first.
 128 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 129     bi.lpszTitle      = m_message.mb_str();
 130 #else
 131     bi.lpszTitle      = m_message.c_str();
 132 #endif
 133     bi.ulFlags        = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
 134     bi.lpfn           = BrowseCallbackProc;
 135     bi.lParam         = (LPARAM)m_path.c_str();    // param for the callback
 136
 137     static const int verComCtl32 = wxApp::GetComCtl32Version();
 138
 139     // we always add the edit box (it doesn't hurt anybody, does it?) if it is
 140     // supported by the system
 141     if ( verComCtl32 >= 471 )
 142     {
 143         bi.ulFlags |= BIF_EDITBOX;
 144     }
 145
 146     // to have the "New Folder" button we must use the "new" dialog style which
 147     // is also the only way to have a resizable dialog
 148     //
 149     // "new" style is only available in the version 5.0+ of comctl32.dll
 150     const bool needNewDir = HasFlag(wxDD_NEW_DIR_BUTTON);
 151     if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) )
 152     {
 153         if (needNewDir)
 154         {
 155             bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 156         }
 157         else
 158         {
 159             // Versions < 600 doesn't support BIF_NONEWFOLDERBUTTON
 160             // The only way to get rid of the Make New Folder button is use
 161             // the old dialog style which doesn't have the button thus we
 162             // simply don't set the New Dialog Style for such comctl versions.
 163             if (verComCtl32 >= 600)
 164             {
 165                 bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 166                 bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
 167             }
 168         }
 169     }
 170
 171     // do show the dialog
 172     wxItemIdList pidl(SHBrowseForFolder(&bi));
 173
 174     wxItemIdList::Free((LPITEMIDLIST)bi.pidlRoot);
 175
 176     if ( !pidl )
 177     {
 178         // Cancel button pressed
 179         return wxID_CANCEL;
 180     }
 181
 182     m_path = pidl.GetPath();
 183
 184     return m_path.empty() ? wxID_CANCEL : wxID_OK;
 185 }
 186
 187 // ----------------------------------------------------------------------------
 188 // private functions
 189 // ----------------------------------------------------------------------------
 190
 191 static int CALLBACK
 192 BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
 193 {
 194     switch(uMsg)
 195     {
 196 #ifdef BFFM_SETSELECTION
 197         case BFFM_INITIALIZED:
 198             // sent immediately after initialisation and so we may set the
 199             // initial selection here
 200             //
 201             // wParam = TRUE => lParam is a string and not a PIDL
 202             ::SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);
 203             break;
 204 #endif // BFFM_SETSELECTION
 205
 206
 207         case BFFM_SELCHANGED:
 208             // note that this doesn't work with the new style UI (MSDN doesn't
 209             // say anything about it, but the comments in shlobj.h do!) but we
 210             // still execute this code in case it starts working again with the
 211             // "new new UI" (or would it be "NewUIEx" according to tradition?)
 212             {
 213                 // Set the status window to the currently selected path.
 214                 wxString strDir;
 215                 if ( SHGetPathFromIDList((LPITEMIDLIST)lp,
 216                                          wxStringBuffer(strDir, MAX_PATH)) )
 217                 {
 218                     // NB: this shouldn't be necessary with the new style box
 219                     //     (which is resizable), but as for now it doesn't work
 220                     //     anyhow (see the comment above) no harm in doing it
 221
 222                     // need to truncate or it displays incorrectly
 223                     static const size_t maxChars = 37;
 224                     if ( strDir.length() > maxChars )
 225                     {
 226                         strDir = strDir.Right(maxChars);
 227                         strDir = wxString(wxT("...")) + strDir;
 228                     }
 229
 230                     SendMessage(hwnd, BFFM_SETSTATUSTEXT,
 231                                 0, (LPARAM)strDir.c_str());
 232                 }
 233             }
 234             break;
 235
 236         //case BFFM_VALIDATEFAILED: -- might be used to provide custom message
 237         //                             if the user types in invalid dir name
 238     }
 239
 240     return 0;
 241 }
 242
 243 #endif // compiler/platform on which the code here compiles
 244
 245 #endif // wxUSE_DIRDLG
 246