src/msw/dirdlg.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
  21     #pragma implementation "dirdlg.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #if wxUSE_DIRDLG && (!defined(__WXWINCE__) || defined(__HANDHELDPC__))
  32
  33 #if defined(__WIN95__) && !defined(__GNUWIN32_OLD__) && wxUSE_OLE
  34
  35 #ifndef WX_PRECOMP
  36     #include "wx/utils.h"
  37     #include "wx/dialog.h"
  38     #include "wx/dirdlg.h"
  39     #include "wx/log.h"
  40     #include "wx/app.h"     // for GetComCtl32Version()
  41 #endif
  42
  43 #include "wx/msw/private.h"
  44 #include "wx/msw/wrapshl.h"
  45
  46 // ----------------------------------------------------------------------------
  47 // constants
  48 // ----------------------------------------------------------------------------
  49
  50 #ifndef BIF_NEWDIALOGSTYLE
  51     #define BIF_NEWDIALOGSTYLE 0x0040
  52 #endif
  53
  54 #ifndef BIF_NONEWFOLDERBUTTON
  55     #define BIF_NONEWFOLDERBUTTON  0x0200
  56 #endif
  57
  58 #ifndef BIF_EDITBOX
  59     #define BIF_EDITBOX 16
  60 #endif
  61
  62 // ----------------------------------------------------------------------------
  63 // wxWidgets macros
  64 // ----------------------------------------------------------------------------
  65
  66 IMPLEMENT_CLASS(wxDirDialog, wxDialog)
  67
  68 // ----------------------------------------------------------------------------
  69 // private functions prototypes
  70 // ----------------------------------------------------------------------------
  71
  72 // the callback proc for the dir dlg
  73 static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp,
  74                                        LPARAM pData);
  75
  76
  77 // ============================================================================
  78 // implementation
  79 // ============================================================================
  80
  81 // ----------------------------------------------------------------------------
  82 // wxDirDialog
  83 // ----------------------------------------------------------------------------
  84
  85 wxDirDialog::wxDirDialog(wxWindow *parent,
  86                          const wxString& message,
  87                          const wxString& defaultPath,
  88                          long style,
  89                          const wxPoint& WXUNUSED(pos),
  90                          const wxSize& WXUNUSED(size),
  91                          const wxString& WXUNUSED(name))
  92 {
  93     m_message = message;
  94     m_parent = parent;
  95
  96     SetStyle(style);
  97     SetPath(defaultPath);
  98 }
  99
 100 void wxDirDialog::SetPath(const wxString& path)
 101 {
 102     m_path = path;
 103
 104     // SHBrowseForFolder doesn't like '/'s nor the trailing backslashes
 105     m_path.Replace(_T("/"), _T("\\"));
 106     if ( !m_path.empty() )
 107     {
 108         while ( *(m_path.end() - 1) == _T('\\') )
 109         {
 110             m_path.erase(m_path.length() - 1);
 111         }
 112
 113         // but the root drive should have a trailing slash (again, this is just
 114         // the way the native dialog works)
 115         if ( *(m_path.end() - 1) == _T(':') )
 116         {
 117             m_path += _T('\\');
 118         }
 119     }
 120 }
 121
 122 int wxDirDialog::ShowModal()
 123 {
 124     wxWindow *parent = GetParent();
 125
 126     BROWSEINFO bi;
 127     bi.hwndOwner      = parent ? GetHwndOf(parent) : NULL;
 128     bi.pidlRoot       = NULL;
 129     bi.pszDisplayName = NULL;
 130     // Please don't change this without checking it compiles
 131     // with eVC++ first.
 132 #if defined(__POCKETPC__) || defined(__SMARTPHONE__)
 133     bi.lpszTitle      = m_message.mb_str();
 134 #else
 135     bi.lpszTitle      = m_message.c_str();
 136 #endif
 137     bi.ulFlags        = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
 138     bi.lpfn           = BrowseCallbackProc;
 139     bi.lParam         = (LPARAM)m_path.c_str();    // param for the callback
 140
 141     static const int verComCtl32 = wxApp::GetComCtl32Version();
 142
 143     // we always add the edit box (it doesn't hurt anybody, does it?) if it is
 144     // supported by the system
 145     if ( verComCtl32 >= 471 )
 146     {
 147         bi.ulFlags |= BIF_EDITBOX;
 148     }
 149
 150     // to have the "New Folder" button we must use the "new" dialog style which
 151     // is also the only way to have a resizable dialog
 152     //
 153     // "new" style is only available in the version 5.0+ of comctl32.dll
 154     const bool needNewDir = HasFlag(wxDD_NEW_DIR_BUTTON);
 155     if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) )
 156     {
 157         if (needNewDir)
 158         {
 159             bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 160         }
 161         else
 162         {
 163             // Versions < 600 doesn't support BIF_NONEWFOLDERBUTTON
 164             // The only way to get rid of the Make New Folder button is use
 165             // the old dialog style which doesn't have the button thus we
 166             // simply don't set the New Dialog Style for such comctl versions.
 167             if (verComCtl32 >= 600)
 168             {
 169                 bi.ulFlags |= BIF_NEWDIALOGSTYLE;
 170                 bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
 171             }
 172         }
 173     }
 174
 175     // do show the dialog
 176     wxItemIdList pidl(SHBrowseForFolder(&bi));
 177
 178     wxItemIdList::Free((LPITEMIDLIST)bi.pidlRoot);
 179
 180     if ( !pidl )
 181     {
 182         // Cancel button pressed
 183         return wxID_CANCEL;
 184     }
 185
 186     m_path = pidl.GetPath();
 187
 188     return m_path.empty() ? wxID_CANCEL : wxID_OK;
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // private functions
 193 // ----------------------------------------------------------------------------
 194
 195 static int CALLBACK
 196 BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
 197 {
 198     switch(uMsg)
 199     {
 200 #ifdef BFFM_SETSELECTION
 201         case BFFM_INITIALIZED:
 202             // sent immediately after initialisation and so we may set the
 203             // initial selection here
 204             //
 205             // wParam = TRUE => lParam is a string and not a PIDL
 206             ::SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);
 207             break;
 208 #endif // BFFM_SETSELECTION
 209
 210
 211         case BFFM_SELCHANGED:
 212             // note that this doesn't work with the new style UI (MSDN doesn't
 213             // say anything about it, but the comments in shlobj.h do!) but we
 214             // still execute this code in case it starts working again with the
 215             // "new new UI" (or would it be "NewUIEx" according to tradition?)
 216             {
 217                 // Set the status window to the currently selected path.
 218                 wxString strDir;
 219                 if ( SHGetPathFromIDList((LPITEMIDLIST)lp,
 220                                          wxStringBuffer(strDir, MAX_PATH)) )
 221                 {
 222                     // NB: this shouldn't be necessary with the new style box
 223                     //     (which is resizable), but as for now it doesn't work
 224                     //     anyhow (see the comment above) no harm in doing it
 225
 226                     // need to truncate or it displays incorrectly
 227                     static const size_t maxChars = 37;
 228                     if ( strDir.length() > maxChars )
 229                     {
 230                         strDir = strDir.Right(maxChars);
 231                         strDir = wxString(wxT("...")) + strDir;
 232                     }
 233
 234                     SendMessage(hwnd, BFFM_SETSTATUSTEXT,
 235                                 0, (LPARAM)strDir.c_str());
 236                 }
 237             }
 238             break;
 239
 240         //case BFFM_VALIDATEFAILED: -- might be used to provide custom message
 241         //                             if the user types in invalid dir name
 242     }
 243
 244     return 0;
 245 }
 246
 247
 248 #else
 249     #include "../generic/dirdlgg.cpp"
 250 #endif // compiler/platform on which the code here compiles
 251
 252 #endif // wxUSE_DIRDLG && !(__SMARTPHONE__ && __WXWINCE__)