scrolling to selection

[wxWidgets.git] / src / msw / dirdlg.cpp

diff --git a/src/msw/dirdlg.cpp b/src/msw/dirdlg.cpp
index 4be95f9efe7c7f9fba64c757cdd2694de8d1ab30..bf9a67c590493b539a4c2971c1111edf19fdeda4 100644 (file)
--- a/src/msw/dirdlg.cpp
+++ b/src/msw/dirdlg.cpp
@@ -5,127 +5,288 @@
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$
 // Modified by:
 // Created:     01/02/97
 // RCS-ID:      $Id$

-// Copyright:   (c) Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Copyright:   (c) Julian Smart
+// Licence:     wxWindows licence

 /////////////////////////////////////////////////////////////////////////////
 
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
-#pragma implementation "dirdlg.h"
+// ============================================================================
+// declarations
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
+    #pragma implementation "dirdlg.h"

 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 #ifdef __BORLANDC__

-#pragma hdrstop
+    #pragma hdrstop

 #endif
 
 #endif
 

+#if wxUSE_DIRDLG
+
+#if defined(__WIN95__) && !defined(__GNUWIN32_OLD__) && wxUSE_OLE
+

 #ifndef WX_PRECOMP
 #ifndef WX_PRECOMP

-#include <stdio.h>
-#include "wx/defs.h"
-#include "wx/utils.h"
-#include "wx/dialog.h"
-#include "wx/dirdlg.h"
+    #include "wx/utils.h"
+    #include "wx/dialog.h"
+    #include "wx/dirdlg.h"
+    #include "wx/log.h"
+    #include "wx/app.h"     // for GetComCtl32Version()

 #endif
 
 #endif
 

-#if defined(__WIN95__) && !defined(__GNUWIN32__)
-#include "shlobj.h" // Win95 shell
+#include "wx/msw/private.h"
+
+#ifdef __WXWINCE__
+#include <winreg.h>
+#include <objbase.h>
+#include <shlguid.h>

 #endif
 #endif

+#include <shlobj.h> // Win95 shell

 
 

-#include "wx/msw/private.h"
-#include "wx/cmndata.h"
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------

 
 

-#include <math.h>
-#include <stdlib.h>
-#include <string.h>
+#ifndef MAX_PATH
+    #define MAX_PATH 4096      // be generous
+#endif

 
 

-#define wxDIALOG_DEFAULT_X 300
-#define wxDIALOG_DEFAULT_Y 300
+#ifndef BIF_NEWDIALOGSTYLE
+    #define BIF_NEWDIALOGSTYLE 0x0040
+#endif

 
 

-#if !USE_SHARED_LIBRARY
-IMPLEMENT_CLASS(wxDirDialog, wxDialog)
+#ifndef BIF_NONEWFOLDERBUTTON
+    #define BIF_NONEWFOLDERBUTTON  0x0200
+#endif
+
+#ifndef BIF_EDITBOX
+    #define BIF_EDITBOX 16

 #endif
 
 #endif
 

-wxDirDialog::wxDirDialog(wxWindow *parent, const wxString& message,
-//             const wxString& caption,
-        const wxString& defaultPath,
-        long style, const wxPoint& pos)
+// ----------------------------------------------------------------------------
+// wxWindows macros
+// ----------------------------------------------------------------------------
+
+IMPLEMENT_CLASS(wxDirDialog, wxDialog)
+
+// ----------------------------------------------------------------------------
+// private functions prototypes
+// ----------------------------------------------------------------------------
+
+// free the parameter
+static void ItemListFree(LPITEMIDLIST pidl);
+
+// the callback proc for the dir dlg
+static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp,
+                                       LPARAM pData);
+
+
+// ============================================================================
+// implementation
+// ============================================================================
+
+// ----------------------------------------------------------------------------
+// wxDirDialog
+// ----------------------------------------------------------------------------
+
+wxDirDialog::wxDirDialog(wxWindow *parent,
+                         const wxString& message,
+                         const wxString& defaultPath,
+                         long style,
+                         const wxPoint& WXUNUSED(pos),
+                         const wxSize& WXUNUSED(size),
+                         const wxString& WXUNUSED(name))

 {
     m_message = message;
 {
     m_message = message;

-//    m_caption = caption;
-    m_dialogStyle = style;

     m_parent = parent;
     m_parent = parent;

-       m_path = defaultPath;
+
+    SetStyle(style);
+    SetPath(defaultPath);

 }
 
 }
 

-int wxDirDialog::ShowModal(void)
+void wxDirDialog::SetPath(const wxString& path)

 {
 {

-    // Unfortunately Gnu-Win32 doesn't yet have COM support
-#if defined(__WIN95__) && !defined(__GNUWIN32__)
-  HWND hWnd = 0;
-  if (m_parent) hWnd = (HWND) m_parent->GetHWND();
+    m_path = path;
+
+    // SHBrowseForFolder doesn't like '/'s nor the trailing backslashes
+    m_path.Replace(_T("/"), _T("\\"));
+    if ( !m_path.empty() )
+    {
+        while ( *(m_path.end() - 1) == _T('\\') )
+        {
+            m_path.erase(m_path.length() - 1);
+        }
+
+        // but the root drive should have a trailing slash (again, this is just
+        // the way the native dialog works)
+        if ( *(m_path.end() - 1) == _T(':') )
+        {
+            m_path += _T('\\');
+        }
+    }
+}
+
+int wxDirDialog::ShowModal()
+{
+    wxWindow *parent = GetParent();

 
     BROWSEINFO bi;
 
     BROWSEINFO bi;

-    LPTSTR lpBuffer;
-//    LPITEMIDLIST pidlPrograms;  // PIDL for Programs folder 
-    LPITEMIDLIST pidlBrowse;    // PIDL selected by user 
-    LPMALLOC pMalloc = NULL;
-
-    HRESULT result = ::SHGetMalloc(&pMalloc);
-
-    if (result != NOERROR)
-      return wxID_CANCEL;
-    
-    // Allocate a buffer to receive browse information. 
-    if ((lpBuffer = (LPTSTR) pMalloc->Alloc(MAX_PATH)) == NULL) 
+    bi.hwndOwner      = parent ? GetHwndOf(parent) : NULL;
+    bi.pidlRoot       = NULL;
+    bi.pszDisplayName = NULL;
+#ifdef __WXWINCE__
+    bi.lpszTitle      = m_message.mb_str();
+#else
+    bi.lpszTitle      = m_message.c_str();
+#endif
+    bi.ulFlags        = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT;
+    bi.lpfn           = BrowseCallbackProc;
+    bi.lParam         = (LPARAM)m_path.c_str();    // param for the callback
+
+    static const int verComCtl32 = wxApp::GetComCtl32Version();
+
+    // we always add the edit box (it doesn't hurt anybody, does it?) if it is
+    // supported by the system
+    if ( verComCtl32 >= 471 )
+    {
+        bi.ulFlags |= BIF_EDITBOX;
+    }
+
+    // to have the "New Folder" button we must use the "new" dialog style which
+    // is also the only way to have a resizable dialog
+    //
+    // "new" style is only available in the version 5.0+ of comctl32.dll
+    const bool needNewDir = HasFlag(wxDD_NEW_DIR_BUTTON);
+    if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) )
+    {
+        if (needNewDir)
+        {
+            bi.ulFlags |= BIF_NEWDIALOGSTYLE;
+        }
+        else
+        {
+            // Versions < 600 doesn't support BIF_NONEWFOLDERBUTTON
+            // The only way to get rid of the Make New Folder button is use
+            // the old dialog style which doesn't have the button thus we
+            // simply don't set the New Dialog Style for such comctl versions.
+            if (verComCtl32 >= 600)
+            {
+                bi.ulFlags |= BIF_NEWDIALOGSTYLE;
+                bi.ulFlags |= BIF_NONEWFOLDERBUTTON;
+            }
+        }
+    }
+
+    // do show the dialog
+    LPITEMIDLIST pidl = SHBrowseForFolder(&bi);
+
+    if ( bi.pidlRoot )
+    {
+        ItemListFree((LPITEMIDLIST)bi.pidlRoot);
+    }
+
+    if ( !pidl )

     {
     {

-        pMalloc->Release();
+        // Cancel button pressed

         return wxID_CANCEL;
     }
 
         return wxID_CANCEL;
     }
 

-/*
-    // Get the PIDL for the Programs folder. 
-    if (!SUCCEEDED(SHGetSpecialFolderLocation( 
-            parent->GetSafeHwnd(), CSIDL_PROGRAMS, &pidlPrograms))) { 
-        pMalloc->Free(lpBuffer);
-        pMalloc->Release();
+    BOOL ok = SHGetPathFromIDList(pidl, wxStringBuffer(m_path, MAX_PATH));
+
+    ItemListFree(pidl);
+
+    if ( !ok )
+    {
+        wxLogLastError(wxT("SHGetPathFromIDList"));
+

         return wxID_CANCEL;
         return wxID_CANCEL;

-    } 
-*/
- 
-    // Fill in the BROWSEINFO structure. 
-    bi.hwndOwner = hWnd;
-    bi.pidlRoot = NULL; // pidlPrograms; 
-    bi.pszDisplayName = lpBuffer; 
-    bi.lpszTitle = m_message; // BC++ 4.52 says LPSTR, not LPTSTR?
-    bi.ulFlags = 0; 
-    bi.lpfn = NULL; 
-    bi.lParam = 0; 
- 
-    // Browse for a folder and return its PIDL. 
-    pidlBrowse = SHBrowseForFolder(&bi); 
-
-    int id = wxID_OK;
-    if (pidlBrowse != NULL) {
- 
-        // Show the display name, title, and file system path. 
-        if (SHGetPathFromIDList(pidlBrowse, lpBuffer))
-          m_path = lpBuffer;
-          
-        // Free the PIDL returned by SHBrowseForFolder. 
-        pMalloc->Free(pidlBrowse);

     }
     }

-       else
-               id = wxID_CANCEL;
- 
-    // Clean up. 
-//    pMalloc->Free(pidlPrograms); 
-    pMalloc->Free(lpBuffer); 
-    pMalloc->Release();
-    
-    return id;
-#else
-       return wxID_CANCEL;
+
+    return wxID_OK;
+}
+
+// ----------------------------------------------------------------------------
+// private functions
+// ----------------------------------------------------------------------------
+
+static int CALLBACK
+BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData)
+{
+    switch(uMsg)
+    {
+        case BFFM_INITIALIZED:
+            // sent immediately after initialisation and so we may set the
+            // initial selection here
+            //
+            // wParam = TRUE => lParam is a string and not a PIDL
+#ifndef __WXWINCE__
+            SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData);

 #endif
 #endif

+            break;
+
+        case BFFM_SELCHANGED:
+            // note that this doesn't work with the new style UI (MSDN doesn't
+            // say anything about it, but the comments in shlobj.h do!) but we
+            // still execute this code in case it starts working again with the
+            // "new new UI" (or would it be "NewUIEx" according to tradition?)
+            {
+                // Set the status window to the currently selected path.
+                wxString strDir;
+                if ( SHGetPathFromIDList((LPITEMIDLIST)lp,
+                                         wxStringBuffer(strDir, MAX_PATH)) )
+                {
+                    // NB: this shouldn't be necessary with the new style box
+                    //     (which is resizable), but as for now it doesn't work
+                    //     anyhow (see the comment above) no harm in doing it
+
+                    // need to truncate or it displays incorrectly
+                    static const size_t maxChars = 37;
+                    if ( strDir.length() > maxChars )
+                    {
+                        strDir = strDir.Right(maxChars);
+                        strDir = wxString(wxT("...")) + strDir;
+                    }
+
+                    SendMessage(hwnd, BFFM_SETSTATUSTEXT,
+                                0, (LPARAM)strDir.c_str());
+                }
+            }
+            break;
+
+        //case BFFM_VALIDATEFAILED: -- might be used to provide custom message
+        //                             if the user types in invalid dir name
+    }
+
+    return 0;

 }
 
 }
 

+
+static void ItemListFree(LPITEMIDLIST pidl)
+{
+    if ( pidl )
+    {
+        LPMALLOC pMalloc;
+        SHGetMalloc(&pMalloc);
+        if ( pMalloc )
+        {
+            pMalloc->Free(pidl);
+            pMalloc->Release();
+        }
+        else
+        {
+            wxLogLastError(wxT("SHGetMalloc"));
+        }
+    }
+}
+
+#else
+    #include "../generic/dirdlgg.cpp"
+#endif // compiler/platform on which the code here compiles
+
+#endif // wxUSE_DIRDLG