+ }
+ }
+
+ virtual bool SetValue( const wxVariant &variant,
+ const wxDataViewItem &item, unsigned int col )
+ {
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ switch (col)
+ {
+ case 0: node->m_title = variant.GetString(); return true;
+ case 1: node->m_artist = variant.GetString(); return true;
+ case 2: node->m_year = variant.GetLong(); return true;
+ case 3: node->m_quality = variant.GetString(); return true;
+ default: wxLogError( wxT("MyMusicModel::SetValue: wrong column") );
+ }
+ return false;
+ }
+
+ virtual wxDataViewItem GetParent( const wxDataViewItem &item ) const
+ {
+ // the invisble root node has no parent
+ if (!item.IsOk())
+ return wxDataViewItem(0);
+
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+
+ // "MyMusic" also has no parent
+ if (node == m_root)
+ return wxDataViewItem(0);
+
+ return wxDataViewItem( (void*) node->GetParent() );
+ }
+
+ virtual bool IsContainer( const wxDataViewItem &item ) const
+ {
+ // the invisble root node can have children (in
+ // our model always "MyMusic")
+ if (!item.IsOk())
+ return true;
+
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ return node->IsContainer();
+ }
+
+ virtual unsigned int GetChildren( const wxDataViewItem &parent, wxDataViewItemArray &array ) const
+ {
+ MyMusicModelNode *node = (MyMusicModelNode*) parent.GetID();
+ if (!node)
+ {
+ array.Add( wxDataViewItem( (void*) m_root ) );
+ return 1;
+ }
+
+ if (node == m_classical)
+ {
+ MyMusicModel *model = (MyMusicModel*)(const MyMusicModel*) this;
+ model->m_classicalMusicIsKnownToControl = true;
+ }
+
+ if (node->GetChildCount() == 0)
+ {
+ return 0;
+ }
+
+ unsigned int count = node->GetChildren().GetCount();
+ unsigned int pos;
+ for (pos = 0; pos < count; pos++)
+ {
+ MyMusicModelNode *child = node->GetChildren().Item( pos );
+ array.Add( wxDataViewItem( (void*) child ) );
+ }
+ return count;
+ }
+
+ // DnD
+
+ virtual bool IsDraggable( const wxDataViewItem &item )
+ {
+ // only drag items
+ return (!IsContainer(item));
+ }
+
+ virtual size_t GetDragDataSize( const wxDataViewItem &item, const wxDataFormat &WXUNUSED(format) )
+ {
+ wxPrintf( "GetDragDataSize\n" );
+
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ wxString data;
+ data += node->m_title; data += wxT(" ");
+ data += node->m_artist;
+ return strlen( data.utf8_str() ) + 1;
+ }
+ virtual bool GetDragData( const wxDataViewItem &item, const wxDataFormat &WXUNUSED(format),
+ void* dest, size_t WXUNUSED(size) )
+ {
+ wxPrintf( "GetDragData\n" );
+
+ MyMusicModelNode *node = (MyMusicModelNode*) item.GetID();
+ wxString data;
+ data += node->m_title; data += wxT(" ");
+ data += node->m_artist;
+ wxCharBuffer buffer( data.utf8_str() );
+ memcpy( dest, buffer, strlen(buffer)+1 );