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