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(wxT("/"), wxT("\\"));
 104
 105     while ( !m_path.empty() && (*(m_path.end() - 1) == wxT('\\')) )
 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.empty() && (*(m_path.end() - 1) == wxT(':')) )
 113     {
 114         m_path += wxT('\\');
 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.wx_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_DIR_MUST_EXIST);
 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     // change current working directory if asked so
 185     if (HasFlag(wxDD_CHANGE_DIR))
 186         wxSetWorkingDirectory(m_path);
 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.wx_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 #endif // compiler/platform on which the code here compiles
 248
 249 #endif // wxUSE_DIRDLG