don't compare invalid iterators/node pointers

[wxWidgets.git] / src / gtk / dataobj.cpp

diff --git a/src/gtk/dataobj.cpp b/src/gtk/dataobj.cpp
index e0d6d37609f655df9e6c90d1f3e9f4a2b7204feb..00b429c0b4ef41ef4ae9661df49ad004d29e1bee 100644 (file)
--- a/src/gtk/dataobj.cpp
+++ b/src/gtk/dataobj.cpp
@@ -7,15 +7,19 @@
 // Licence:     wxWindows licence
 ///////////////////////////////////////////////////////////////////////////////
 
-#ifdef __GNUG__
-    #pragma implementation "dataobj.h"
-#endif
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
 
 #include "wx/dataobj.h"
+
+#if wxUSE_DATAOBJ
+
 #include "wx/app.h"
 #include "wx/debug.h"
 #include "wx/mstream.h"
 #include "wx/image.h"
+#include "wx/log.h"
+#include "wx/uri.h"
 
 #include <gdk/gdk.h>
 
@@ -24,6 +28,7 @@
 //-------------------------------------------------------------------------
 
 GdkAtom  g_textAtom        = 0;
+GdkAtom  g_altTextAtom     = 0;
 GdkAtom  g_pngAtom         = 0;
 GdkAtom  g_fileAtom        = 0;
 
@@ -72,14 +77,18 @@ wxDataFormat::wxDataFormat( NativeFormat format )
 void wxDataFormat::SetType( wxDataFormatId type )
 {
     PrepareFormats();
-    
-    if (type == wxDF_UNICODETEXT)
-       type = wxDF_TEXT;
 
     m_type = type;
-    
-    if (m_type == wxDF_TEXT)
+
+#if wxUSE_UNICODE
+    if (m_type == wxDF_UNICODETEXT)
+        m_format = g_textAtom;
+    else if (m_type == wxDF_TEXT)
+        m_format = g_altTextAtom;
+#else
+    if (m_type == wxDF_TEXT || m_type == wxDF_UNICODETEXT)
         m_format = g_textAtom;
+#endif
     else
     if (m_type == wxDF_BITMAP)
         m_format = g_pngAtom;
@@ -99,7 +108,9 @@ wxDataFormatId wxDataFormat::GetType() const
 
 wxString wxDataFormat::GetId() const
 {
-    wxString ret = wxString::FromAscii( gdk_atom_name( m_format ) );
+    gchar* atom_name = gdk_atom_name( m_format );
+    wxString ret = wxString::FromAscii( atom_name );
+    g_free(atom_name);
     return ret;
 }
 
@@ -109,6 +120,13 @@ void wxDataFormat::SetId( NativeFormat format )
     m_format = format;
 
     if (m_format == g_textAtom)
+#if wxUSE_UNICODE
+        m_type = wxDF_UNICODETEXT;
+#else
+        m_type = wxDF_TEXT;
+#endif
+    else
+    if (m_format == g_altTextAtom)
         m_type = wxDF_TEXT;
     else
     if (m_format == g_pngAtom)
@@ -125,7 +143,7 @@ void wxDataFormat::SetId( const wxChar *id )
     PrepareFormats();
     m_type = wxDF_PRIVATE;
     wxString tmp( id );
-    m_format = gdk_atom_intern( (const char*) tmp.ToAscii(), FALSE ); 
+    m_format = gdk_atom_intern( (const char*) tmp.ToAscii(), FALSE );
 }
 
 void wxDataFormat::PrepareFormats()
@@ -140,6 +158,7 @@ void wxDataFormat::PrepareFormats()
     if (!g_textAtom)
 #if wxUSE_UNICODE
         g_textAtom = gdk_atom_intern( "UTF8_STRING", FALSE );
+        g_altTextAtom = gdk_atom_intern( "STRING", FALSE );
 #else
         g_textAtom = gdk_atom_intern( "STRING" /* "text/plain" */, FALSE );
 #endif
@@ -157,20 +176,25 @@ wxDataObject::wxDataObject()
 {
 }
 
+wxDataObject::~wxDataObject()
+{
+    // dtor is empty but needed for Darwin and AIX -- otherwise it doesn't link
+}
+
 bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir) const
 {
     size_t nFormatCount = GetFormatCount(dir);
-    if ( nFormatCount == 1 ) 
+    if ( nFormatCount == 1 )
     {
         return format == GetPreferredFormat();
     }
-    else 
+    else
     {
         wxDataFormat *formats = new wxDataFormat[nFormatCount];
         GetAllFormats(formats,dir);
 
         size_t n;
-        for ( n = 0; n < nFormatCount; n++ ) 
+        for ( n = 0; n < nFormatCount; n++ )
         {
             if ( formats[n] == format )
                 break;
@@ -183,6 +207,18 @@ bool wxDataObject::IsSupportedFormat(const wxDataFormat& format, Direction dir)
     }
 }
 
+// ----------------------------------------------------------------------------
+// wxTextDataObject
+// ----------------------------------------------------------------------------
+
+#if defined(__WXGTK20__) && wxUSE_UNICODE
+void wxTextDataObject::GetAllFormats(wxDataFormat *formats, wxDataObjectBase::Direction dir) const
+{
+    *formats++ = GetPreferredFormat();
+    *formats = g_altTextAtom;
+}
+#endif
+
 // ----------------------------------------------------------------------------
 // wxFileDataObject
 // ----------------------------------------------------------------------------
@@ -193,8 +229,9 @@ bool wxFileDataObject::GetDataHere(void *buf) const
 
     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {
+        filenames += wxT("file:");
         filenames += m_filenames[i];
-        filenames += (wxChar) 0;
+        filenames += wxT("\r\n");
     }
 
     memcpy( buf, filenames.mbc_str(), filenames.Len() + 1 );
@@ -208,8 +245,9 @@ size_t wxFileDataObject::GetDataSize() const
 
     for (size_t i = 0; i < m_filenames.GetCount(); i++)
     {
+        // This is junk in UTF-8
         res += m_filenames[i].Len();
-        res += 1;
+        res += 5 + 2; // "file:" (5) + "\r\n" (2)
     }
 
     return res + 1;
@@ -217,28 +255,10 @@ size_t wxFileDataObject::GetDataSize() const
 
 bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
 {
-    // VZ: old format
-#if 0
-    // filenames are stores as a string with #0 as deliminators
-    const char *filenames = (const char*) buf;
-    size_t pos = 0;
-    for(;;)
-    {
-        if (filenames[0] == 0)
-            break;
-        if (pos >= size)
-            break;
-        wxString file( filenames );  // this returns the first file
-        AddFile( file );
-        pos += file.Len()+1;
-        filenames += file.Len()+1;
-    }
-#else // 1
     m_filenames.Empty();
 
-    // the text/uri-list format is a sequence of URIs (filenames prefixed by
-    // "file:" as far as I see) delimited by "\r\n" of total length size
-    // (I wonder what happens if the file has '\n' in its filename??)
+    // we get data in the text/uri-list format, i.e. as a sequence of URIs
+    // (filenames prefixed by "file:") delimited by "\r\n"
     wxString filename;
     for ( const char *p = (const char *)buf; ; p++ )
     {
@@ -259,12 +279,12 @@ bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
                     lenPrefix += 2;
                 }
 
-                AddFile(filename.c_str() + lenPrefix);
+                AddFile(wxURI::Unescape(filename.c_str() + lenPrefix));
                 filename.Empty();
             }
-            else
+            else if ( !filename.empty() )
             {
-                wxLogDebug(_T("Unsupported URI '%s' in wxFileDataObject"),
+                wxLogDebug(_T("Unsupported URI \"%s\" in wxFileDataObject"),
                            filename.c_str());
             }
 
@@ -279,7 +299,6 @@ bool wxFileDataObject::SetData(size_t WXUNUSED(size), const void *buf)
             filename += *p;
         }
     }
-#endif // 0/1
 
     return TRUE;
 }
@@ -378,4 +397,4 @@ void wxBitmapDataObject::DoConvertToPng()
     image.SaveFile(mstream, wxBITMAP_TYPE_PNG);
 }
 
-
+#endif // wxUSE_DATAOBJ