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__) || \
  30     (defined(__HANDHELDPC__) && (_WIN32_WCE >= 500)))
  31
  32 #include "wx/dirdlg.h"
  33
  34 #ifndef WX_PRECOMP
  35     #include "wx/utils.h"
  36     #include "wx/dialog.h"
  37     #include "wx/log.h"
  38     #include "wx/app.h"     // for GetComCtl32Version()
  39 #endif
  40
  41 #include "wx/msw/private.h"
  42 #include "wx/msw/wrapshl.h"
  43
  44 // ----------------------------------------------------------------------------
  45 // constants
  46 // ----------------------------------------------------------------------------
  47
  48 #ifndef BIF_NEWDIALOGSTYLE
  49     #define BIF_NEWDIALOGSTYLE 0x0040
  50 #endif
  51
  52 #ifndef BIF_NONEWFOLDERBUTTON
  53     #define BIF_NONEWFOLDERBUTTON  0x0200
  54 #endif
  55
  56 #ifndef BIF_EDITBOX
  57     #define BIF_EDITBOX 16
  58 #endif
  59
  60 // ----------------------------------------------------------------------------
  61 // wxWidgets macros
  62 // ----------------------------------------------------------------------------
  63
  64 IMPLEMENT_CLASS(wxDirDialog, wxDialog)
  65
  66 // ----------------------------------------------------------------------------
  67 // private functions prototypes
  68 // ----------------------------------------------------------------------------
  69
  70 // the callback proc for the dir dlg
  71 static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp,
  72                                        LPARAM pData);
  73
  74
  75 // ============================================================================
  76 // implementation
  77 // ============================================================================
  78
  79 // ----------------------------------------------------------------------------
  80 // wxDirDialog
  81 // ----------------------------------------------------------------------------
  82
  83 wxDirDialog::wxDirDialog(wxWindow *parent,
  84                          const wxString& message,
  85                          const wxString& defaultPath,
  86                          long style,
  87                          const wxPoint& WXUNUSED(pos),
  88                          const wxSize& WXUNUSED(size),
  89                          const wxString& WXUNUSED(name))
  90 {
  91     m_message = message;
  92     m_parent = parent;
  93
  94     SetWindowStyle(style);
  95     SetPath(defaultPath);
  96 }
  97
  98 void wxDirDialog::SetPath(const wxString& path)
  99 {
 100     m_path = path;
 101
 102     // SHBrowseForFolder doesn't like '/'s nor the trailing backslashes
 103     m_path.Replace(_T("/"), _T("\\"));
 104     if ( !m_path.empty() )
 105     {
 106         while ( *(m_path.end() - 1) == _T('\\') )
 107         {
 108             m_path.erase(m_path.length() - 1);
 109         }
 110
 111         // but the root drive should have a trailing slash (again, this is just
 112         // the way the native dialog works)
 113         if ( *(m_path.end() - 1) == _T(':') )
 114         {
 115             m_path += _T('\\');
 116         }
 117     }
 118 }
 119
 120 int wxDirDialog::ShowModal()
 121 {
 122     wxWindow *parent = GetParent();
 123
 124     BROWSEINFO bi;
 125     bi.hwndOwner      = parent ? GetHwndOf(parent) : NULL;
 126     bi.pidlRoot       = NULL;
 127     bi.pszDisplayName = NULL;
 128     // Please don't change this without checking it compiles
 129     // with eVC++ first.
 130 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 131     bi.lpszTitle      = m_message.mb_str();
 132 #else
 133     bi.lpszTitle      = m_message.c_str();
 134 #endif
 135     bi.ulFlags        = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
 136     bi.lpfn           = BrowseCallbackProc;
 137     bi.lParam         = (LPARAM)m_path.c_str();    // param for the callback
 138
 139     static const int verComCtl32 = wxApp::GetComCtl32Version();
 140
 141     // we always add the edit box (it doesn't hurt anybody, does it?) if it is
 142     // supported by the system
 143     if ( verComCtl32 >= 471 )
 144     {
 145         bi.ulFlags |= BIF_EDITBOX;
 146     }
 147
 148     // to have the "New Folder" button we must use the "new" dialog style which
 149     // is also the only way to have a resizable dialog
 150     //
 151     // "new" style is only available in the version 5.0+ of comctl32.dll
 152     const bool needNewDir = !HasFlag(wxDD_DIR_MUST_EXIST);
 153     if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) )
 154     {
 155         if (needNewDir)
 156         {
 157             bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 158         }
 159         else
 160         {
 161             // Versions < 600 doesn't support BIF_NONEWFOLDERBUTTON
 162             // The only way to get rid of the Make New Folder button is use
 163             // the old dialog style which doesn't have the button thus we
 164             // simply don't set the New Dialog Style for such comctl versions.
 165             if (verComCtl32 >= 600)
 166             {
 167                 bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 168                 bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
 169             }
 170         }
 171     }
 172
 173     // do show the dialog
 174     wxItemIdList pidl(SHBrowseForFolder(&bi));
 175
 176     wxItemIdList::Free((LPITEMIDLIST)bi.pidlRoot);
 177
 178     if ( !pidl )
 179     {
 180         // Cancel button pressed
 181         return wxID_CANCEL;
 182     }
 183
 184     m_path = pidl.GetPath();
 185
 186     // change current working directory if asked so
 187     if (HasFlag(wxDD_CHANGE_DIR))
 188         wxSetWorkingDirectory(m_path);
 189
 190     return m_path.empty() ? wxID_CANCEL : wxID_OK;
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // private functions
 195 // ----------------------------------------------------------------------------
 196
 197 static int CALLBACK
 198 BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
 199 {
 200     switch(uMsg)
 201     {
 202 #ifdef BFFM_SETSELECTION
 203         case BFFM_INITIALIZED:
 204             // sent immediately after initialisation and so we may set the
 205             // initial selection here
 206             //
 207             // wParam = TRUE => lParam is a string and not a PIDL
 208             ::SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);
 209             break;
 210 #endif // BFFM_SETSELECTION
 211
 212
 213         case BFFM_SELCHANGED:
 214             // note that this doesn't work with the new style UI (MSDN doesn't
 215             // say anything about it, but the comments in shlobj.h do!) but we
 216             // still execute this code in case it starts working again with the
 217             // "new new UI" (or would it be "NewUIEx" according to tradition?)
 218             {
 219                 // Set the status window to the currently selected path.
 220                 wxString strDir;
 221                 if ( SHGetPathFromIDList((LPITEMIDLIST)lp,
 222                                          wxStringBuffer(strDir, MAX_PATH)) )
 223                 {
 224                     // NB: this shouldn't be necessary with the new style box
 225                     //     (which is resizable), but as for now it doesn't work
 226                     //     anyhow (see the comment above) no harm in doing it
 227
 228                     // need to truncate or it displays incorrectly
 229                     static const size_t maxChars = 37;
 230                     if ( strDir.length() > maxChars )
 231                     {
 232                         strDir = strDir.Right(maxChars);
 233                         strDir = wxString(wxT("...")) + strDir;
 234                     }
 235
 236                     SendMessage(hwnd, BFFM_SETSTATUSTEXT,
 237                                 0, (LPARAM)strDir.c_str());
 238                 }
 239             }
 240             break;
 241
 242         //case BFFM_VALIDATEFAILED: -- might be used to provide custom message
 243         //                             if the user types in invalid dir name
 244     }
 245
 246     return 0;
 247 }
 248
 249 #endif // compiler/platform on which the code here compiles
 250
 251 #endif // wxUSE_DIRDLG