bool Cleared();
void Resort()
{
- SortPrepare();
- m_root->Resort();
+ if (m_root)
+ {
+ SortPrepare();
+ m_root->Resort();
+ }
UpdateDisplay();
}
void wxDataViewMainWindow::OnPaint( wxPaintEvent &WXUNUSED(event) )
{
wxDataViewModel *model = GetOwner()->GetModel();
- wxAutoBufferedPaintDC dc( this );
+ //wxAutoBufferedPaintDC dc( this );
+ wxPaintDC dc(this);
// prepare the DC
dc.SetBackground(GetBackgroundColour());
unsigned int item_start = wxMax( 0, (update.y / m_lineHeight) );
unsigned int item_count =
wxMin( (int)(((update.y + update.height) / m_lineHeight) - item_start + 1),
- (int)(GetRowCount( )- item_start) );
+ (int)(GetRowCount( ) - item_start));
unsigned int item_last = item_start + item_count;
// compute which columns needs to be redrawn
{
// get the cell value and set it into the renderer
wxVariant value;
- wxDataViewTreeNode * node = GetTreeNodeByRow(item);
- if( node == NULL )
- continue;
+ wxDataViewTreeNode *node = NULL;
+ wxDataViewItem dataitem;
+
+ if (m_root)
+ {
+ node = GetTreeNodeByRow(item);
+ if( node == NULL )
+ continue;
- wxDataViewItem dataitem = node->GetItem();
+ dataitem = node->GetItem();
- if ((i > 0) && model->IsContainer(dataitem) && !model->HasContainerColumns(dataitem))
- continue;
+ if ((i > 0) && model->IsContainer(dataitem) && !model->HasContainerColumns(dataitem))
+ continue;
+ }
+ else
+ {
+ dataitem = wxDataViewItem( (void*) item );
+ }
model->GetValue( value, dataitem, col->GetModelColumn());
cell->SetValue( value );
cell_rect.y = item * m_lineHeight;
//Draw the expander here.
- int indent = node->GetIndentLevel();
- if( col == expander )
+ int indent = 0;
+ if ((m_root) && (col == expander))
{
+ indent = node->GetIndentLevel();
+
//Calculate the indent first
indent = cell_rect.x + GetOwner()->GetIndent() * indent;
}
else
{
- // I am wandering whether we should draw dot lines between tree nodes
- delete node;
- //Yes, if the node does not have any child, it must be a leaf which mean that it is a temporarily created by GetTreeNodeByRow
+ // I am wondering whether we should draw dot lines between tree nodes
+ if (node)
+ delete node;
+ // Yes, if the node does not have any child, it must be a leaf which
+ // mean that it is a temporarily created by GetTreeNodeByRow
}
//force the expander column to left-center align
wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
{
- RowToItemJob job( row, -2 );
- Walker( m_root , job );
- return job.GetResult();
+ if (!m_root)
+ {
+ return wxDataViewItem( (void*) row );
+ }
+ else
+ {
+ RowToItemJob job( row, -2 );
+ Walker( m_root , job );
+ return job.GetResult();
+ }
}
class RowToTreeNodeJob: public DoJob
wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row)
{
- RowToTreeNodeJob job( row , -2, m_root );
- Walker( m_root , job );
- return job.GetResult();
+ if (!m_root)
+ {
+ return NULL;
+ }
+ else
+ {
+ RowToTreeNodeJob job( row , -2, m_root );
+ Walker( m_root , job );
+ return job.GetResult();
+ }
}
wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type, const wxDataViewItem & item )
int wxDataViewMainWindow::RecalculateCount()
{
- return m_root->GetSubTreeCount();
+ if (!m_root)
+ {
+ wxDataViewIndexListModel *list_model = (wxDataViewIndexListModel*) GetOwner()->GetModel();
+#ifndef __WXMAC__
+ return list_model->GetLastIndex() + 1;
+#else
+ return list_model->GetLastIndex() - 1;
+#endif
+ }
+ else
+ {
+ return m_root->GetSubTreeCount();
+ }
}
class ItemToRowJob : public DoJob
if( model == NULL )
return -1;
- if( !item.IsOk() )
- return -1;
-
- //Compose the a parent-chain of the finding item
- ItemList list;
- wxDataViewItem * pItem = NULL;
- list.DeleteContents( true );
- wxDataViewItem it( item );
- while( it.IsOk() )
+ if (!m_root)
{
- pItem = new wxDataViewItem( it );
- list.Insert( pItem );
- it = model->GetParent( it );
+ return wxPtrToUInt( item.GetID() );
}
- pItem = new wxDataViewItem( );
- list.Insert( pItem );
+ else
+ {
+ if( !item.IsOk() )
+ return -1;
+
+ //Compose the a parent-chain of the finding item
+ ItemList list;
+ wxDataViewItem * pItem = NULL;
+ list.DeleteContents( true );
+ wxDataViewItem it( item );
+ while( it.IsOk() )
+ {
+ pItem = new wxDataViewItem( it );
+ list.Insert( pItem );
+ it = model->GetParent( it );
+ }
+ pItem = new wxDataViewItem( );
+ list.Insert( pItem );
- ItemToRowJob job( item, list.begin() );
- Walker(m_root , job );
- return job.GetResult();
+ ItemToRowJob job( item, list.begin() );
+ Walker(m_root , job );
+ return job.GetResult();
+ }
}
void BuildTreeHelper( wxDataViewModel * model, wxDataViewItem & item, wxDataViewTreeNode * node)
void wxDataViewMainWindow::BuildTree(wxDataViewModel * model)
{
+ DestroyTree();
+
+ if (GetOwner()->GetModel()->IsIndexListModel())
+ {
+ m_count = -1 ;
+ return;
+ }
+
+ m_root = new wxDataViewTreeNode( NULL );
+ m_root->SetHasChildren(true);
+
//First we define a invalid item to fetch the top-level elements
wxDataViewItem item;
SortPrepare();
void wxDataViewMainWindow::DestroyTree()
{
- DestroyTreeHelper(m_root);
- m_root->SetSubTreeCount(0);
- m_count = 0 ;
+ if (m_root)
+ {
+ DestroyTreeHelper(m_root);
+ m_count = 0;
+ m_root = NULL;
+ }
}
void wxDataViewMainWindow::OnChar( wxKeyEvent &event )
//Test whether the mouse is hovered on the tree item button
bool hover = false;
- if (GetOwner()->GetExpanderColumn() == col)
+ if ((m_root) && (GetOwner()->GetExpanderColumn() == col))
{
wxDataViewTreeNode * node = GetTreeNodeByRow(current);
if( node!=NULL && node->HasChildren() )
//Process the event of user clicking the expander
bool expander = false;
- if (GetOwner()->GetExpanderColumn() == col)
+ if ((m_root) && (GetOwner()->GetExpanderColumn() == col))
{
wxDataViewTreeNode * node = GetTreeNodeByRow(current);
if( node!=NULL && node->HasChildren() )
model->AddNotifier( m_notifier );
+ m_clientArea->DestroyTree();
+
m_clientArea->BuildTree(model);
m_clientArea->UpdateDisplay();
projects / wxWidgets.git / blobdiff