///////////////////////////////////////////////////////////////////////////////
-// Name: common/dobjcmn.cpp
+// Name: src/common/dobjcmn.cpp
// Purpose: implementation of data object methods common to all platforms
// Author: Vadim Zeitlin, Robert Roebling
// Modified by:
// Created: 19.10.99
// RCS-ID: $Id$
-// Copyright: (c) wxWindows Team
-// Licence: wxWindows license
+// Copyright: (c) wxWidgets Team
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
-// ============================================================================
-// declarations
-// ============================================================================
-
-// ----------------------------------------------------------------------------
-// headers
-// ----------------------------------------------------------------------------
-
-#ifdef __GNUG__
- #pragma implementation "dataobjbase.h"
-#endif
-
+// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#ifdef __BORLANDC__
#pragma hdrstop
#endif
-#ifndef WX_PRECOMP
- #include "wx/app.h"
- #include "wx/debug.h"
-#endif // WX_PRECOMP
+#if wxUSE_DATAOBJ
#include "wx/dataobj.h"
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+#endif
+
// ----------------------------------------------------------------------------
// lists
// ----------------------------------------------------------------------------
#include "wx/listimpl.cpp"
-WX_DEFINE_LIST(wxSimpleDataObjectList);
+WX_DEFINE_LIST(wxSimpleDataObjectList)
+
+// ----------------------------------------------------------------------------
+// globals
+// ----------------------------------------------------------------------------
+
+static wxDataFormat dataFormatInvalid;
+WXDLLEXPORT const wxDataFormat& wxFormatInvalid = dataFormatInvalid;
// ============================================================================
// implementation
{
}
+bool wxDataObjectBase::IsSupported(const wxDataFormat& format,
+ Direction dir) const
+{
+ size_t nFormatCount = GetFormatCount( dir );
+ if ( nFormatCount == 1 )
+ {
+ return format == GetPreferredFormat( dir );
+ }
+ else
+ {
+ wxDataFormat *formats = new wxDataFormat[nFormatCount];
+ GetAllFormats( formats, dir );
+
+ size_t n;
+ for ( n = 0; n < nFormatCount; n++ )
+ {
+ if ( formats[n] == format )
+ break;
+ }
+
+ delete [] formats;
+
+ // found?
+ return n < nFormatCount;
+ }
+}
+
// ----------------------------------------------------------------------------
// wxDataObjectComposite
// ----------------------------------------------------------------------------
+wxDataObjectComposite::wxDataObjectComposite()
+{
+ m_preferred = 0;
+ m_receivedFormat = wxFormatInvalid;
+}
+
+wxDataObjectComposite::~wxDataObjectComposite()
+{
+ WX_CLEAR_LIST( wxSimpleDataObjectList, m_dataObjects );
+}
+
wxDataObjectSimple *
-wxDataObjectComposite::GetObject(const wxDataFormat& format) const
+wxDataObjectComposite::GetObject(const wxDataFormat& format, wxDataObjectBase::Direction dir) const
{
- wxSimpleDataObjectList::Node *node = m_dataObjects.GetFirst();
+ wxSimpleDataObjectList::compatibility_iterator node = m_dataObjects.GetFirst();
+
while ( node )
{
wxDataObjectSimple *dataObj = node->GetData();
- if ( dataObj->GetFormat() == format )
- {
- return dataObj;
- }
-
+ if (dataObj->IsSupported(format,dir))
+ return dataObj;
node = node->GetNext();
}
-
- return (wxDataObjectSimple *)NULL;
+ return NULL;
}
void wxDataObjectComposite::Add(wxDataObjectSimple *dataObject, bool preferred)
{
+ // check if the data format of the passed object already exists in the composite data object, if this is the case
+ // do not add the data object and display a message in debug mode (otherwise this method fails silently):
+ // start checking if the data format exists for the 'GET' direction:
+ size_t indexFormats;
+ size_t noOfFormats;
+ wxDataFormat* formats;
+
+ noOfFormats = dataObject->GetFormatCount(wxDataObjectBase::Get);
+ formats = new wxDataFormat[noOfFormats];
+ for (indexFormats=0; indexFormats<noOfFormats; ++indexFormats)
+ wxCHECK_RET(this->GetObject(formats[indexFormats],wxDataObjectBase::Get) == NULL,
+ _("The data format for the GET-direction of the to be added data object already exists"));
+ delete[] formats;
+ // do the same with the 'SET' direction:
+ noOfFormats = dataObject->GetFormatCount(wxDataObjectBase::Set);
+
+ formats = new wxDataFormat[noOfFormats];
+ for (indexFormats=0; indexFormats<noOfFormats; ++indexFormats)
+ wxCHECK_RET(this->GetObject(formats[indexFormats],wxDataObjectBase::Set) == NULL,
+ _("The data format for the SET-direction of the to be added data object already exists"));
+ delete[] formats;
+
+ // if we reach this location the data object can simply be appended:
if ( preferred )
m_preferred = m_dataObjects.GetCount();
-
m_dataObjects.Append( dataObject );
}
+wxDataFormat wxDataObjectComposite::GetReceivedFormat() const
+{
+ return m_receivedFormat;
+}
+
wxDataFormat
wxDataObjectComposite::GetPreferredFormat(Direction WXUNUSED(dir)) const
{
- wxSimpleDataObjectList::Node *node = m_dataObjects.Item( m_preferred );
+ wxSimpleDataObjectList::compatibility_iterator node = m_dataObjects.Item( m_preferred );
- wxCHECK_MSG( node, wxDF_INVALID, wxT("no preferred format") );
+ wxCHECK_MSG( node, wxFormatInvalid, wxT("no preferred format") );
wxDataObjectSimple* dataObj = node->GetData();
return dataObj->GetFormat();
}
-size_t wxDataObjectComposite::GetFormatCount(Direction WXUNUSED(dir)) const
+#if defined(__WXMSW__)
+
+size_t wxDataObjectComposite::GetBufferOffset( const wxDataFormat& format )
+{
+ wxDataObjectSimple *dataObj = GetObject(format);
+
+ wxCHECK_MSG( dataObj, 0,
+ wxT("unsupported format in wxDataObjectComposite"));
+
+ return dataObj->GetBufferOffset( format );
+}
+
+
+const void* wxDataObjectComposite::GetSizeFromBuffer( const void* buffer,
+ size_t* size,
+ const wxDataFormat& format )
+{
+ wxDataObjectSimple *dataObj = GetObject(format);
+
+ wxCHECK_MSG( dataObj, NULL,
+ wxT("unsupported format in wxDataObjectComposite"));
+
+ return dataObj->GetSizeFromBuffer( buffer, size, format );
+}
+
+
+void* wxDataObjectComposite::SetSizeInBuffer( void* buffer, size_t size,
+ const wxDataFormat& format )
{
- // TODO what about the Get/Set only formats?
- return m_dataObjects.GetCount();
+ wxDataObjectSimple *dataObj = GetObject( format );
+
+ wxCHECK_MSG( dataObj, NULL,
+ wxT("unsupported format in wxDataObjectComposite"));
+
+ return dataObj->SetSizeInBuffer( buffer, size, format );
}
-void wxDataObjectComposite::GetAllFormats(wxDataFormat *formats,
- Direction WXUNUSED(dir)) const
+#endif
+
+size_t wxDataObjectComposite::GetFormatCount(Direction dir) const
{
size_t n = 0;
- wxSimpleDataObjectList::Node *node;
+
+ // NOTE: some wxDataObjectSimple objects may return a number greater than 1
+ // from GetFormatCount(): this is the case of e.g. wxTextDataObject
+ // under wxMac and wxGTK
+ wxSimpleDataObjectList::compatibility_iterator node;
+ for ( node = m_dataObjects.GetFirst(); node; node = node->GetNext() )
+ n += node->GetData()->GetFormatCount(dir);
+
+ return n;
+}
+
+void wxDataObjectComposite::GetAllFormats(wxDataFormat *formats,
+ Direction dir) const
+{
+ size_t index(0);
+ wxSimpleDataObjectList::compatibility_iterator node;
+
for ( node = m_dataObjects.GetFirst(); node; node = node->GetNext() )
{
- // TODO if ( !outputOnlyToo ) && this one counts ...
- formats[n++] = node->GetData()->GetFormat();
+ // NOTE: some wxDataObjectSimple objects may return more than 1 format
+ // from GetAllFormats(): this is the case of e.g. wxTextDataObject
+ // under wxMac and wxGTK
+ node->GetData()->GetAllFormats(formats+index, dir);
+ index += node->GetData()->GetFormatCount(dir);
}
}
bool wxDataObjectComposite::GetDataHere(const wxDataFormat& format,
void *buf) const
{
- wxDataObjectSimple *dataObj = GetObject(format);
+ wxDataObjectSimple *dataObj = GetObject( format );
- wxCHECK_MSG( dataObj, FALSE,
+ wxCHECK_MSG( dataObj, false,
wxT("unsupported format in wxDataObjectComposite"));
- return dataObj->GetDataHere(buf);
+ return dataObj->GetDataHere( buf );
}
bool wxDataObjectComposite::SetData(const wxDataFormat& format,
size_t len,
const void *buf)
{
- wxDataObjectSimple *dataObj = GetObject(format);
+ wxDataObjectSimple *dataObj = GetObject( format );
- wxCHECK_MSG( dataObj, FALSE,
+ wxCHECK_MSG( dataObj, false,
wxT("unsupported format in wxDataObjectComposite"));
- return dataObj->SetData(len, buf);
+ m_receivedFormat = format;
+ return dataObj->SetData( len, buf );
}
// ----------------------------------------------------------------------------
// wxTextDataObject
// ----------------------------------------------------------------------------
-size_t wxTextDataObject::GetDataSize() const
+#ifdef wxNEEDS_UTF8_FOR_TEXT_DATAOBJ
+
+// FIXME-UTF8: we should be able to merge wchar_t and UTF-8 versions once we
+// have a way to get UTF-8 string (and its length) in both builds
+// without loss of efficiency (i.e. extra buffer copy/strlen call)
+
+#if wxUSE_UNICODE_WCHAR
+
+static inline wxMBConv& GetConv(const wxDataFormat& format)
{
- return GetTextLength();
+ // use UTF8 for wxDF_UNICODETEXT and UCS4 for wxDF_TEXT
+ return format == wxDF_UNICODETEXT ? wxConvUTF8 : wxConvLibc;
}
-bool wxTextDataObject::GetDataHere(void *buf) const
+size_t wxTextDataObject::GetDataSize(const wxDataFormat& format) const
{
- strcpy((char *)buf, GetText().mb_str());
+ wxCharBuffer buffer = GetConv(format).cWX2MB( GetText().c_str() );
- return TRUE;
+ return buffer ? strlen( buffer ) : 0;
}
-bool wxTextDataObject::SetData(size_t WXUNUSED(len), const void *buf)
+bool wxTextDataObject::GetDataHere(const wxDataFormat& format, void *buf) const
{
- SetText(wxString((const char *)buf));
+ if ( !buf )
+ return false;
+
+ wxCharBuffer buffer = GetConv(format).cWX2MB( GetText().c_str() );
+ if ( !buffer )
+ return false;
- return TRUE;
+ memcpy( (char*) buf, buffer, GetDataSize(format) );
+ // strcpy( (char*) buf, buffer );
+
+ return true;
}
-// ----------------------------------------------------------------------------
-// wxFileDataObjectBase
-// ----------------------------------------------------------------------------
+bool wxTextDataObject::SetData(const wxDataFormat& format,
+ size_t WXUNUSED(len), const void *buf)
+{
+ if ( buf == NULL )
+ return false;
+
+ wxWCharBuffer buffer = GetConv(format).cMB2WX( (const char*)buf );
+
+ SetText( buffer );
+
+ return true;
+}
-wxString wxFileDataObjectBase::GetFilenames() const
+#else // wxUSE_UNICODE_UTF8
+
+size_t wxTextDataObject::GetDataSize(const wxDataFormat& format) const
{
- wxString str;
- size_t count = m_filenames.GetCount();
- for ( size_t n = 0; n < count; n++ )
+ if ( format == wxDF_UNICODETEXT || wxLocaleIsUtf8 )
{
- str << m_filenames[n] << wxT('\0');
+ return m_text.utf8_length();
+ }
+ else // wxDF_TEXT
+ {
+ const wxCharBuffer buf(wxConvLocal.cWC2MB(m_text.wc_str()));
+ return buf ? strlen(buf) : 0;
}
-
- return str;
}
-void wxFileDataObjectBase::SetFilenames(const wxChar* filenames)
+bool wxTextDataObject::GetDataHere(const wxDataFormat& format, void *buf) const
{
- m_filenames.Empty();
+ if ( !buf )
+ return false;
- wxString current;
- for ( const wxChar *pc = filenames; ; pc++ )
+ if ( format == wxDF_UNICODETEXT || wxLocaleIsUtf8 )
{
- if ( *pc )
- {
- current += *pc;
- }
- else
- {
- if ( !current )
- {
- // 2 consecutive NULs - this is the end of the string
- break;
- }
+ memcpy(buf, m_text.utf8_str(), m_text.utf8_length());
+ }
+ else // wxDF_TEXT
+ {
+ const wxCharBuffer bufLocal(wxConvLocal.cWC2MB(m_text.wc_str()));
+ if ( !bufLocal )
+ return false;
- m_filenames.Add(current);
- current.Empty();
- }
+ memcpy(buf, bufLocal, strlen(bufLocal));
+ }
+
+ return true;
+}
+
+bool wxTextDataObject::SetData(const wxDataFormat& format,
+ size_t len, const void *buf_)
+{
+ const char * const buf = static_cast<const char *>(buf_);
+
+ if ( buf == NULL )
+ return false;
+
+ if ( format == wxDF_UNICODETEXT || wxLocaleIsUtf8 )
+ {
+ // normally the data is in UTF-8 so we could use FromUTF8Unchecked()
+ // but it's not absolutely clear what GTK+ does if the clipboard data
+ // is not in UTF-8 so do an extra check for tranquility, it shouldn't
+ // matter much if we lose a bit of performance when pasting from
+ // clipboard
+ m_text = wxString::FromUTF8(buf, len);
+ }
+ else // wxDF_TEXT, convert from current (non-UTF8) locale
+ {
+ m_text = wxConvLocal.cMB2WC(buf, len, NULL);
}
+
+ return true;
}
+#endif // wxUSE_UNICODE_WCHAR/wxUSE_UNICODE_UTF8
+
+#elif defined(wxNEEDS_UTF16_FOR_TEXT_DATAOBJ)
+
+static wxMBConvUTF16 sUTF16Converter;
+
+static inline wxMBConv& GetConv(const wxDataFormat& format)
+{
+ return
+ format == wxDF_UNICODETEXT
+ ? (wxMBConv&) sUTF16Converter
+ : (wxMBConv&) wxConvLocal;
+}
+
+size_t wxTextDataObject::GetDataSize(const wxDataFormat& format) const
+{
+ size_t len = GetConv(format).WC2MB( NULL, GetText().c_str(), 0 );
+ len += (format == wxDF_UNICODETEXT ? 2 : 1);
+
+ return len;
+}
+
+bool wxTextDataObject::GetDataHere(const wxDataFormat& format, void *buf) const
+{
+ if ( buf == NULL )
+ return false;
+
+ wxCharBuffer buffer = GetConv(format).cWX2MB( GetText().c_str() );
+
+ size_t len = GetConv(format).WC2MB( NULL, GetText().c_str(), 0 );
+ len += (format == wxDF_UNICODETEXT ? 2 : 1);
+
+ // trailing (uni)char 0
+ memcpy( (char*)buf, (const char*)buffer, len );
+
+ return true;
+}
+
+bool wxTextDataObject::SetData(const wxDataFormat& format,
+ size_t WXUNUSED(len), const void *buf)
+{
+ if ( buf == NULL )
+ return false;
+
+ wxWCharBuffer buffer = GetConv(format).cMB2WX( (const char*)buf );
+
+ SetText( buffer );
+
+ return true;
+}
+
+#else // !wxNEEDS_UTF{8,16}_FOR_TEXT_DATAOBJ
+
+size_t wxTextDataObject::GetDataSize() const
+{
+ return GetTextLength() * sizeof(wxChar);
+}
+
+bool wxTextDataObject::GetDataHere(void *buf) const
+{
+ // NOTE: use wxTmemcpy() instead of wxStrncpy() to allow
+ // retrieval of strings with embedded NULLs
+ wxTmemcpy( (wxChar*)buf, GetText().c_str(), GetTextLength() );
+
+ return true;
+}
+
+bool wxTextDataObject::SetData(size_t len, const void *buf)
+{
+ SetText( wxString((const wxChar*)buf, len/sizeof(wxChar)) );
+
+ return true;
+}
+
+#endif // different wxTextDataObject implementations
+
// ----------------------------------------------------------------------------
// wxCustomDataObject
// ----------------------------------------------------------------------------
+wxCustomDataObject::wxCustomDataObject(const wxDataFormat& format)
+ : wxDataObjectSimple(format)
+{
+ m_data = NULL;
+ m_size = 0;
+}
+
wxCustomDataObject::~wxCustomDataObject()
{
Free();
void wxCustomDataObject::Free()
{
- delete [] m_data;
+ delete [] (char*)m_data;
m_size = 0;
- m_data = (void *)NULL;
+ m_data = NULL;
}
size_t wxCustomDataObject::GetDataSize() const
bool wxCustomDataObject::GetDataHere(void *buf) const
{
+ if ( buf == NULL )
+ return false;
+
void *data = GetData();
- if ( !data )
- return FALSE;
+ if ( data == NULL )
+ return false;
- memcpy(buf, data, GetSize());
+ memcpy( buf, data, GetSize() );
- return TRUE;
+ return true;
}
-bool wxCustomDataObject::SetData(size_t len, const void *buf)
+bool wxCustomDataObject::SetData(size_t size, const void *buf)
{
Free();
m_data = Alloc(size);
- if ( !m_data )
- return FALSE;
+ if ( m_data == NULL )
+ return false;
+
+ m_size = size;
+ memcpy( m_data, buf, m_size );
+
+ return true;
+}
+
+// ============================================================================
+// some common dnd related code
+// ============================================================================
+
+#if wxUSE_DRAG_AND_DROP
+
+#include "wx/dnd.h"
+
+// ----------------------------------------------------------------------------
+// wxTextDropTarget
+// ----------------------------------------------------------------------------
+
+// NB: we can't use "new" in ctor initializer lists because this provokes an
+// internal compiler error with VC++ 5.0 (hey, even gcc compiles this!),
+// so use SetDataObject() instead
+
+wxTextDropTarget::wxTextDropTarget()
+{
+ SetDataObject(new wxTextDataObject);
+}
- memcpy(m_data, buf, m_size = len);
+wxDragResult wxTextDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
+{
+ if ( !GetData() )
+ return wxDragNone;
- return TRUE;
+ wxTextDataObject *dobj = (wxTextDataObject *)m_dataObject;
+ return OnDropText( x, y, dobj->GetText() ) ? def : wxDragNone;
}
+// ----------------------------------------------------------------------------
+// wxFileDropTarget
+// ----------------------------------------------------------------------------
+
+wxFileDropTarget::wxFileDropTarget()
+{
+ SetDataObject(new wxFileDataObject);
+}
+
+wxDragResult wxFileDropTarget::OnData(wxCoord x, wxCoord y, wxDragResult def)
+{
+ if ( !GetData() )
+ return wxDragNone;
+
+ wxFileDataObject *dobj = (wxFileDataObject *)m_dataObject;
+ return OnDropFiles( x, y, dobj->GetFilenames() ) ? def : wxDragNone;
+}
+
+#endif // wxUSE_DRAG_AND_DROP
+
+#endif // wxUSE_DATAOBJ
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