+ wxLogError( wxT("MyMusicModel::GetValue: wrong column" ));
+
+ // provoke a crash when mouse button down
+ wxMouseState state = wxGetMouseState();
+ if (state.ShiftDown())
+ {
+ char *crash = 0;
+ *crash = 0;
+ }
+ }
+ }
+ }
+
+ 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;
+ 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 );
+ return true;
+ }
+
+private:
+ MyMusicModelNode* m_root;
+ MyMusicModelNode* m_pop;
+ MyMusicModelNode* m_classical;
+ bool m_classicalMusicIsKnownToControl;
+};
+
+
+static int my_sort_reverse( int *v1, int *v2 )
+{
+ return *v2-*v1;
+}
+
+static int my_sort( int *v1, int *v2 )
+{
+ return *v1-*v2;
+}
+
+class MyListModel: public wxDataViewVirtualListModel
+{
+public:
+ MyListModel() :
+#ifdef __WXMAC__
+ wxDataViewVirtualListModel( 1000 + 100 )
+#else
+ wxDataViewVirtualListModel( 100000 + 100 )
+#endif
+ {
+#ifdef __WXMAC__
+ m_virtualItems = 1000;
+#else
+ m_virtualItems = 100000;
+#endif
+
+ unsigned int i;
+ for (i = 0; i < 100; i++)
+ {
+ wxString str;
+ str.Printf( wxT("row number %d"), i );
+ m_array.Add( str );
+ }
+
+ m_icon = wxIcon( null_xpm );
+ }
+
+ // helper methods to change the model
+
+ void Prepend( const wxString &text )
+ {
+ m_array.Insert( text, 0 );
+ RowPrepended();
+ }
+
+ void DeleteItem( const wxDataViewItem &item )
+ {
+ unsigned int row = GetRow( item );
+ if (row >= m_array.GetCount())
+ return;
+
+ m_array.RemoveAt( row );
+ RowDeleted( row );
+ }
+
+ void DeleteItems( const wxDataViewItemArray &items )
+ {
+ wxArrayInt rows;
+ unsigned int i;
+ for (i = 0; i < items.GetCount(); i++)
+ {
+ unsigned int row = GetRow( items[i] );
+ if (row < m_array.GetCount())
+ rows.Add( row );
+ }
+
+ // Sort in descending order so that the last
+ // row will be deleted first. Otherwise the
+ // remaining indeces would all be wrong.
+ rows.Sort( my_sort_reverse );
+ for (i = 0; i < rows.GetCount(); i++)
+ m_array.RemoveAt( rows[i] );
+
+ // This is just to test if wxDataViewCtrl can
+ // cope with removing rows not sorted in
+ // descending order
+ rows.Sort( my_sort );
+ RowsDeleted( rows );
+ }
+
+ void AddMany()
+ {
+ m_virtualItems += 1000;
+ Reset( m_array.GetCount() + m_virtualItems );
+ }
+
+ // implementation of base class virtuals to define model
+
+ virtual unsigned int GetColumnCount() const
+ {
+ return 3;
+ }
+
+ virtual wxString GetColumnType( unsigned int col ) const
+ {
+ if (col == 1)
+ return wxT("wxDataViewIconText");
+
+ return wxT("string");
+ }
+
+ virtual unsigned int GetRowCount()
+ {
+ return m_array.GetCount();
+ }
+
+ virtual void GetValue( wxVariant &variant,
+ unsigned int row, unsigned int col ) const
+ {
+ if (col==0)
+ {
+ if (row >= m_array.GetCount())
projects / wxWidgets.git / blobdiff