+
+ // Delete the item from wxDataViewTreeNode representation:
+ int itemsDeleted = 1;
+ node->GetChildren().Remove( item.GetID() );
+
+ if( isContainer )
+ {
+ wxDataViewTreeNode *n = node->FindItemAsNode(item);
+
+ wxCHECK_MSG( n != NULL, false, "item not found" );
+
+ node->GetNodes().Remove( n );
+ itemsDeleted += n->GetSubTreeCount();
+ ::DestroyTreeHelper(n);
+ }
+
+ // Make the row number invalid and get a new valid one when user call GetRowCount
+ m_count = -1;
+ node->ChangeSubTreeCount(-itemsDeleted);
+
+ // Update selection by removing 'item' and its entire children tree from the selection.
+ if ( !m_selection.empty() )
+ {
+ // we can't call GetRowByItem() on 'item', as it's already deleted, so compute it from
+ // the parent ('node') and position in its list of children
+ int itemRow;
+ if ( itemPosInNode == 0 )
+ {
+ // 1st child, row number is that of the parent node + 1
+ itemRow = GetRowByItem(node->GetItem()) + 1;
+ }
+ else
+ {
+ // row number is that of the sibling above 'item' + its subtree if any + 1
+ const wxDataViewItem sibling = wxDataViewItem(node->GetChildren()[itemPosInNode - 1]);
+ const wxDataViewTreeNode *siblingNode = node->FindItemAsNode(sibling);
+
+ itemRow = GetRowByItem(sibling);
+ if ( siblingNode )
+ itemRow += siblingNode->GetSubTreeCount();
+ itemRow += 1;
+ }
+
+ wxDataViewSelection newsel(wxDataViewSelectionCmp);
+
+ for ( wxDataViewSelection::const_iterator i = m_selection.begin();
+ i != m_selection.end();
+ ++i )
+ {
+ const int s = *i;
+ if ( s < itemRow )
+ newsel.push_back(s);
+ else if ( s >= itemRow + itemsDeleted )
+ newsel.push_back(s - itemsDeleted);
+ // else: deleted item, remove from selection
+ }
+
+ m_selection = newsel;
+ }
+ }
+
+ // Change the current row to the last row if the current exceed the max row number
+ if( m_currentRow > GetRowCount() )
+ ChangeCurrentRow(m_count - 1);
+
+ UpdateDisplay();
+
+ return true;
+}
+
+bool wxDataViewMainWindow::ItemChanged(const wxDataViewItem & item)
+{
+ GetOwner()->InvalidateColBestWidths();
+
+ SortPrepare();
+ g_model->Resort();
+
+ // Send event
+ wxWindow *parent = GetParent();
+ wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
+ le.SetEventObject(parent);
+ le.SetModel(GetOwner()->GetModel());
+ le.SetItem(item);
+ parent->GetEventHandler()->ProcessEvent(le);
+
+ return true;
+}
+
+bool wxDataViewMainWindow::ValueChanged( const wxDataViewItem & item, unsigned int model_column )
+{
+ int view_column = -1;
+ unsigned int n_col = m_owner->GetColumnCount();
+ for (unsigned i = 0; i < n_col; i++)
+ {
+ wxDataViewColumn *column = m_owner->GetColumn( i );
+ if (column->GetModelColumn() == model_column)
+ {
+ view_column = (int) i;
+ break;
+ }
+ }
+ if (view_column == -1)
+ return false;
+
+ GetOwner()->InvalidateColBestWidth(view_column);
+
+ // NOTE: to be valid, we cannot use e.g. INT_MAX - 1
+/*#define MAX_VIRTUAL_WIDTH 100000
+
+ wxRect rect( 0, row*m_lineHeight, MAX_VIRTUAL_WIDTH, m_lineHeight );
+ m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+ Refresh( true, &rect );
+
+ return true;
+*/
+ SortPrepare();
+ g_model->Resort();
+
+ // Send event
+ wxWindow *parent = GetParent();
+ wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_ITEM_VALUE_CHANGED, parent->GetId());
+ le.SetEventObject(parent);
+ le.SetModel(GetOwner()->GetModel());
+ le.SetItem(item);
+ le.SetColumn(view_column);
+ le.SetDataViewColumn(GetOwner()->GetColumn(view_column));
+ parent->GetEventHandler()->ProcessEvent(le);
+
+ return true;
+}
+
+bool wxDataViewMainWindow::Cleared()
+{
+ GetOwner()->InvalidateColBestWidths();
+
+ DestroyTree();
+ m_selection.Clear();
+
+ SortPrepare();
+ BuildTree( GetOwner()->GetModel() );
+
+ UpdateDisplay();
+
+ return true;
+}
+
+void wxDataViewMainWindow::UpdateDisplay()
+{
+ m_dirty = true;
+ m_underMouse = NULL;
+}
+
+void wxDataViewMainWindow::OnInternalIdle()
+{
+ wxWindow::OnInternalIdle();
+
+ if (m_dirty)
+ {
+ RecalculateDisplay();
+ m_dirty = false;
+ }
+}
+
+void wxDataViewMainWindow::RecalculateDisplay()
+{
+ wxDataViewModel *model = GetOwner()->GetModel();
+ if (!model)
+ {
+ Refresh();
+ return;
+ }
+
+ int width = GetEndOfLastCol();
+ int height = GetLineStart( GetRowCount() );
+
+ SetVirtualSize( width, height );
+ GetOwner()->SetScrollRate( 10, m_lineHeight );
+
+ Refresh();
+}
+
+void wxDataViewMainWindow::ScrollWindow( int dx, int dy, const wxRect *rect )
+{
+ m_underMouse = NULL;
+
+ wxWindow::ScrollWindow( dx, dy, rect );
+
+ if (GetOwner()->m_headerArea)
+ GetOwner()->m_headerArea->ScrollWindow( dx, 0 );
+}
+
+void wxDataViewMainWindow::ScrollTo( int rows, int column )
+{
+ m_underMouse = NULL;
+
+ int x, y;
+ m_owner->GetScrollPixelsPerUnit( &x, &y );
+ int sy = GetLineStart( rows )/y;
+ int sx = 0;
+ if( column != -1 )
+ {
+ wxRect rect = GetClientRect();
+ int colnum = 0;
+ int x_start, w = 0;
+ int xx, yy, xe;
+ m_owner->CalcUnscrolledPosition( rect.x, rect.y, &xx, &yy );
+ for (x_start = 0; colnum < column; colnum++)
+ {
+ wxDataViewColumn *col = GetOwner()->GetColumnAt(colnum);
+ if (col->IsHidden())
+ continue; // skip it!
+
+ w = col->GetWidth();
+ x_start += w;
+ }
+
+ int x_end = x_start + w;
+ xe = xx + rect.width;
+ if( x_end > xe )
+ {
+ sx = ( xx + x_end - xe )/x;
+ }
+ if( x_start < xx )
+ {
+ sx = x_start/x;
+ }
+ }
+ m_owner->Scroll( sx, sy );
+}
+
+int wxDataViewMainWindow::GetCountPerPage() const
+{
+ wxSize size = GetClientSize();
+ return size.y / m_lineHeight;
+}
+
+int wxDataViewMainWindow::GetEndOfLastCol() const
+{
+ int width = 0;
+ unsigned int i;
+ for (i = 0; i < GetOwner()->GetColumnCount(); i++)
+ {
+ const wxDataViewColumn *c =
+ const_cast<wxDataViewCtrl*>(GetOwner())->GetColumnAt( i );
+
+ if (!c->IsHidden())
+ width += c->GetWidth();
+ }
+ return width;
+}
+
+unsigned int wxDataViewMainWindow::GetFirstVisibleRow() const
+{
+ int x = 0;
+ int y = 0;
+ m_owner->CalcUnscrolledPosition( x, y, &x, &y );
+
+ return GetLineAt( y );
+}
+
+unsigned int wxDataViewMainWindow::GetLastVisibleRow()
+{
+ wxSize client_size = GetClientSize();
+ m_owner->CalcUnscrolledPosition( client_size.x, client_size.y,
+ &client_size.x, &client_size.y );
+
+ // we should deal with the pixel here
+ unsigned int row = GetLineAt(client_size.y) - 1;
+
+ return wxMin( GetRowCount()-1, row );
+}
+
+unsigned int wxDataViewMainWindow::GetRowCount()
+{
+ if ( m_count == -1 )
+ {
+ m_count = RecalculateCount();
+ UpdateDisplay();
+ }
+ return m_count;
+}
+
+void wxDataViewMainWindow::ChangeCurrentRow( unsigned int row )
+{
+ m_currentRow = row;
+
+ // send event
+}
+
+void wxDataViewMainWindow::SelectAllRows( bool on )
+{
+ if (IsEmpty())
+ return;
+
+ if (on)
+ {
+ m_selection.Clear();
+ for (unsigned int i = 0; i < GetRowCount(); i++)
+ m_selection.Add( i );
+ Refresh();
+ }
+ else
+ {
+ unsigned int first_visible = GetFirstVisibleRow();
+ unsigned int last_visible = GetLastVisibleRow();
+ unsigned int i;
+ for (i = 0; i < m_selection.GetCount(); i++)
+ {
+ unsigned int row = m_selection[i];
+ if ((row >= first_visible) && (row <= last_visible))
+ RefreshRow( row );
+ }
+ m_selection.Clear();
+ }
+}
+
+void wxDataViewMainWindow::SelectRow( unsigned int row, bool on )
+{
+ if (m_selection.Index( row ) == wxNOT_FOUND)
+ {
+ if (on)
+ {
+ m_selection.Add( row );
+ RefreshRow( row );
+ }
+ }
+ else
+ {
+ if (!on)
+ {
+ m_selection.Remove( row );
+ RefreshRow( row );
+ }
+ }
+}
+
+void wxDataViewMainWindow::SelectRows( unsigned int from, unsigned int to, bool on )
+{
+ if (from > to)
+ {
+ unsigned int tmp = from;
+ from = to;
+ to = tmp;
+ }
+
+ unsigned int i;
+ for (i = from; i <= to; i++)
+ {
+ if (m_selection.Index( i ) == wxNOT_FOUND)
+ {
+ if (on)
+ m_selection.Add( i );
+ }
+ else
+ {
+ if (!on)
+ m_selection.Remove( i );
+ }
+ }
+ RefreshRows( from, to );
+}
+
+void wxDataViewMainWindow::Select( const wxArrayInt& aSelections )
+{
+ for (size_t i=0; i < aSelections.GetCount(); i++)
+ {
+ int n = aSelections[i];
+
+ m_selection.Add( n );
+ RefreshRow( n );
+ }
+}
+
+void wxDataViewMainWindow::ReverseRowSelection( unsigned int row )
+{
+ if (m_selection.Index( row ) == wxNOT_FOUND)
+ m_selection.Add( row );
+ else
+ m_selection.Remove( row );
+ RefreshRow( row );
+}
+
+bool wxDataViewMainWindow::IsRowSelected( unsigned int row )
+{
+ return (m_selection.Index( row ) != wxNOT_FOUND);
+}
+
+void wxDataViewMainWindow::SendSelectionChangedEvent( const wxDataViewItem& item)
+{
+ wxWindow *parent = GetParent();
+ wxDataViewEvent le(wxEVT_COMMAND_DATAVIEW_SELECTION_CHANGED, parent->GetId());
+
+ le.SetEventObject(parent);
+ le.SetModel(GetOwner()->GetModel());
+ le.SetItem( item );
+
+ parent->GetEventHandler()->ProcessEvent(le);
+}
+
+void wxDataViewMainWindow::RefreshRow( unsigned int row )
+{
+ wxRect rect( 0, GetLineStart( row ), GetEndOfLastCol(), GetLineHeight( row ) );
+ m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+
+ wxSize client_size = GetClientSize();
+ wxRect client_rect( 0, 0, client_size.x, client_size.y );
+ wxRect intersect_rect = client_rect.Intersect( rect );
+ if (intersect_rect.width > 0)
+ Refresh( true, &intersect_rect );
+}
+
+void wxDataViewMainWindow::RefreshRows( unsigned int from, unsigned int to )
+{
+ if (from > to)
+ {
+ unsigned int tmp = to;
+ to = from;
+ from = tmp;
+ }
+
+ wxRect rect( 0, GetLineStart( from ), GetEndOfLastCol(), GetLineStart( (to-from+1) ) );
+ m_owner->CalcScrolledPosition( rect.x, rect.y, &rect.x, &rect.y );
+
+ wxSize client_size = GetClientSize();
+ wxRect client_rect( 0, 0, client_size.x, client_size.y );
+ wxRect intersect_rect = client_rect.Intersect( rect );
+ if (intersect_rect.width > 0)
+ Refresh( true, &intersect_rect );
+}
+
+void wxDataViewMainWindow::RefreshRowsAfter( unsigned int firstRow )
+{
+ wxSize client_size = GetClientSize();
+ int start = GetLineStart( firstRow );
+ m_owner->CalcScrolledPosition( start, 0, &start, NULL );
+ if (start > client_size.y) return;
+
+ wxRect rect( 0, start, client_size.x, client_size.y - start );
+
+ Refresh( true, &rect );
+}
+
+void wxDataViewMainWindow::OnArrowChar(unsigned int newCurrent, const wxKeyEvent& event)
+{
+ wxCHECK_RET( newCurrent < GetRowCount(),
+ wxT("invalid item index in OnArrowChar()") );
+
+ // if there is no selection, we cannot move it anywhere
+ if (!HasCurrentRow())
+ return;
+
+ unsigned int oldCurrent = m_currentRow;
+
+ // in single selection we just ignore Shift as we can't select several
+ // items anyhow
+ if ( event.ShiftDown() && !IsSingleSel() )
+ {
+ RefreshRow( oldCurrent );
+
+ ChangeCurrentRow( newCurrent );
+
+ // select all the items between the old and the new one
+ if ( oldCurrent > newCurrent )
+ {
+ newCurrent = oldCurrent;
+ oldCurrent = m_currentRow;
+ }
+
+ SelectRows( oldCurrent, newCurrent, true );
+ if (oldCurrent!=newCurrent)
+ SendSelectionChangedEvent(GetItemByRow(m_selection[0]));
+ }
+ else // !shift
+ {
+ RefreshRow( oldCurrent );
+
+ // all previously selected items are unselected unless ctrl is held
+ if ( !event.ControlDown() )
+ SelectAllRows(false);
+
+ ChangeCurrentRow( newCurrent );
+
+ if ( !event.ControlDown() )
+ {
+ SelectRow( m_currentRow, true );
+ SendSelectionChangedEvent(GetItemByRow(m_currentRow));
+ }
+ else
+ RefreshRow( m_currentRow );
+ }
+
+ GetOwner()->EnsureVisible( m_currentRow, -1 );
+}
+
+wxRect wxDataViewMainWindow::GetLineRect( unsigned int row ) const
+{
+ wxRect rect;
+ rect.x = 0;
+ rect.y = GetLineStart( row );
+ rect.width = GetEndOfLastCol();
+ rect.height = GetLineHeight( row );
+
+ return rect;
+}
+
+int wxDataViewMainWindow::GetLineStart( unsigned int row ) const
+{
+ const wxDataViewModel *model = GetOwner()->GetModel();
+
+ if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
+ {
+ // TODO make more efficient
+
+ int start = 0;
+
+ unsigned int r;
+ for (r = 0; r < row; r++)
+ {
+ const wxDataViewTreeNode* node = GetTreeNodeByRow(r);
+ if (!node) return start;
+
+ wxDataViewItem item = node->GetItem();
+
+ if (node && !node->HasChildren())
+ {
+ // Yes, if the node does not have any child, it must be a leaf which
+ // mean that it is a temporarily created by GetTreeNodeByRow
+ wxDELETE(node);
+ }
+
+ unsigned int cols = GetOwner()->GetColumnCount();
+ unsigned int col;
+ int height = m_lineHeight;
+ for (col = 0; col < cols; col++)
+ {
+ const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+ if (column->IsHidden())
+ continue; // skip it!
+
+ if ((col != 0) &&
+ model->IsContainer(item) &&
+ !model->HasContainerColumns(item))
+ continue; // skip it!
+
+ wxDataViewRenderer *renderer =
+ const_cast<wxDataViewRenderer*>(column->GetRenderer());
+ renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+ height = wxMax( height, renderer->GetSize().y );
+ }
+
+ start += height;
+ }
+
+ return start;
+ }
+ else
+ {
+ return row * m_lineHeight;
+ }
+}
+
+int wxDataViewMainWindow::GetLineAt( unsigned int y ) const
+{
+ const wxDataViewModel *model = GetOwner()->GetModel();
+
+ // check for the easy case first
+ if ( !GetOwner()->HasFlag(wxDV_VARIABLE_LINE_HEIGHT) )
+ return y / m_lineHeight;
+
+ // TODO make more efficient
+ unsigned int row = 0;
+ unsigned int yy = 0;
+ for (;;)
+ {
+ const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+ if (!node)
+ {
+ // not really correct...
+ return row + ((y-yy) / m_lineHeight);
+ }
+
+ wxDataViewItem item = node->GetItem();
+
+ if (node && !node->HasChildren())
+ {
+ // Yes, if the node does not have any child, it must be a leaf which
+ // mean that it is a temporarily created by GetTreeNodeByRow
+ wxDELETE(node);
+ }
+
+ unsigned int cols = GetOwner()->GetColumnCount();
+ unsigned int col;
+ int height = m_lineHeight;
+ for (col = 0; col < cols; col++)
+ {
+ const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+ if (column->IsHidden())
+ continue; // skip it!
+
+ if ((col != 0) &&
+ model->IsContainer(item) &&
+ !model->HasContainerColumns(item))
+ continue; // skip it!
+
+ wxDataViewRenderer *renderer =
+ const_cast<wxDataViewRenderer*>(column->GetRenderer());
+ renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+ height = wxMax( height, renderer->GetSize().y );
+ }
+
+ yy += height;
+ if (y < yy)
+ return row;
+
+ row++;
+ }
+}
+
+int wxDataViewMainWindow::GetLineHeight( unsigned int row ) const
+{
+ const wxDataViewModel *model = GetOwner()->GetModel();
+
+ if (GetOwner()->GetWindowStyle() & wxDV_VARIABLE_LINE_HEIGHT)
+ {
+ wxASSERT( !IsVirtualList() );
+
+ const wxDataViewTreeNode* node = GetTreeNodeByRow(row);
+ // wxASSERT( node );
+ if (!node) return m_lineHeight;
+
+ wxDataViewItem item = node->GetItem();
+
+ if (node && !node->HasChildren())
+ {
+ // Yes, if the node does not have any child, it must be a leaf which
+ // mean that it is a temporarily created by GetTreeNodeByRow
+ wxDELETE(node);
+ }
+
+ int height = m_lineHeight;
+
+ unsigned int cols = GetOwner()->GetColumnCount();
+ unsigned int col;
+ for (col = 0; col < cols; col++)
+ {
+ const wxDataViewColumn *column = GetOwner()->GetColumn(col);
+ if (column->IsHidden())
+ continue; // skip it!
+
+ if ((col != 0) &&
+ model->IsContainer(item) &&
+ !model->HasContainerColumns(item))
+ continue; // skip it!
+
+ wxDataViewRenderer *renderer =
+ const_cast<wxDataViewRenderer*>(column->GetRenderer());
+ renderer->PrepareForItem(model, item, column->GetModelColumn());
+
+ height = wxMax( height, renderer->GetSize().y );
+ }
+
+ return height;
+ }
+ else
+ {
+ return m_lineHeight;
+ }
+}
+
+class RowToItemJob: public DoJob
+{
+public:
+ RowToItemJob( unsigned int row , int current )
+ { this->row = row; this->current = current; }
+ virtual ~RowToItemJob() {}
+
+ virtual int operator() ( wxDataViewTreeNode * node )
+ {
+ current ++;
+ if( current == static_cast<int>(row))
+ {
+ ret = node->GetItem();
+ return DoJob::OK;
+ }
+
+ if( node->GetSubTreeCount() + current < static_cast<int>(row) )
+ {
+ current += node->GetSubTreeCount();
+ return DoJob::IGR;
+ }
+ else
+ {
+ // If the current has no child node, we can find the desired item of the row
+ // number directly.
+ // This if can speed up finding in some case, and will has a very good effect
+ // when it comes to list view
+ if( node->GetNodes().GetCount() == 0)
+ {
+ int index = static_cast<int>(row) - current - 1;
+ ret = wxDataViewItem(node->GetChildren().Item( index ));
+ return DoJob::OK;
+ }
+ return DoJob::CONT;
+ }
+ }
+
+ virtual int operator() ( void * n )
+ {
+ current ++;
+ if( current == static_cast<int>(row))
+ {
+ ret = wxDataViewItem( n );
+ return DoJob::OK;
+ }
+ return DoJob::CONT;
+ }
+
+ wxDataViewItem GetResult() const
+ { return ret; }
+
+private:
+ unsigned int row;
+ int current;
+ wxDataViewItem ret;
+};
+
+wxDataViewItem wxDataViewMainWindow::GetItemByRow(unsigned int row) const
+{
+ if (IsVirtualList())
+ {
+ return wxDataViewItem( wxUIntToPtr(row+1) );
+ }
+ else
+ {
+ RowToItemJob job( row, -2 );
+ Walker( m_root , job );
+ return job.GetResult();
+ }
+}
+
+class RowToTreeNodeJob: public DoJob
+{
+public:
+ RowToTreeNodeJob( unsigned int row , int current, wxDataViewTreeNode * node )
+ {
+ this->row = row;
+ this->current = current;
+ ret = NULL;
+ parent = node;
+ }
+ virtual ~RowToTreeNodeJob(){ }
+
+ virtual int operator() ( wxDataViewTreeNode * node )
+ {
+ current ++;
+ if( current == static_cast<int>(row))
+ {
+ ret = node;
+ return DoJob::OK;
+ }
+
+ if( node->GetSubTreeCount() + current < static_cast<int>(row) )
+ {
+ current += node->GetSubTreeCount();
+ return DoJob::IGR;
+ }
+ else
+ {
+ parent = node;
+
+ // If the current node has no children, we can find the desired item of the
+ // row number directly.
+ // This if can speed up finding in some case, and will have a very good
+ // effect for list views.
+ if( node->GetNodes().GetCount() == 0)
+ {
+ int index = static_cast<int>(row) - current - 1;
+ void * n = node->GetChildren().Item( index );
+ ret = new wxDataViewTreeNode( parent );
+ ret->SetItem( wxDataViewItem( n ));
+ ret->SetHasChildren(false);
+ return DoJob::OK;
+ }
+ return DoJob::CONT;
+ }
+ }
+
+ virtual int operator() ( void * n )
+ {
+ current ++;
+ if( current == static_cast<int>(row))
+ {
+ ret = new wxDataViewTreeNode( parent );
+ ret->SetItem( wxDataViewItem( n ));
+ ret->SetHasChildren(false);
+ return DoJob::OK;
+ }
+
+ return DoJob::CONT;
+ }
+
+ wxDataViewTreeNode * GetResult() const
+ { return ret; }
+
+private:
+ unsigned int row;
+ int current;
+ wxDataViewTreeNode * ret;
+ wxDataViewTreeNode * parent;
+};
+
+wxDataViewTreeNode * wxDataViewMainWindow::GetTreeNodeByRow(unsigned int row) const
+{
+ wxASSERT( !IsVirtualList() );
+
+ RowToTreeNodeJob job( row , -2, m_root );
+ Walker( m_root , job );
+ return job.GetResult();
+}
+
+wxDataViewEvent wxDataViewMainWindow::SendExpanderEvent( wxEventType type,
+ const wxDataViewItem & item )
+{
+ wxWindow *parent = GetParent();
+ wxDataViewEvent le(type, parent->GetId());
+
+ le.SetEventObject(parent);
+ le.SetModel(GetOwner()->GetModel());
+ le.SetItem( item );
+
+ parent->GetEventHandler()->ProcessEvent(le);
+ return le;
+}
+
+bool wxDataViewMainWindow::IsExpanded( unsigned int row ) const
+{
+ if (IsList())
+ return false;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return false;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return false;
+ }
+
+ return node->IsOpen();
+}
+
+bool wxDataViewMainWindow::HasChildren( unsigned int row ) const
+{
+ if (IsList())
+ return false;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return false;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return false;
+ }
+
+ return true;
+}
+
+void wxDataViewMainWindow::Expand( unsigned int row )
+{
+ if (IsList())
+ return;
+
+ wxDataViewTreeNode * node = GetTreeNodeByRow(row);
+ if (!node)
+ return;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return;
+ }
+
+ if (!node->IsOpen())
+ {
+ wxDataViewEvent e =
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDING, node->GetItem());
+
+ // Check if the user prevent expanding
+ if( e.GetSkipped() )
+ return;
+
+ node->ToggleOpen();
+
+ // build the children of current node
+ if( node->GetChildrenNumber() == 0 )
+ {
+ SortPrepare();
+ ::BuildTreeHelper(GetOwner()->GetModel(), node->GetItem(), node);
+ }
+
+ // By expanding the node all row indices that are currently in the selection list
+ // and are greater than our node have become invalid. So we have to correct that now.
+ const unsigned rowAdjustment = node->GetSubTreeCount();
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ // all rows above us are not affected, so skip them
+ if(testRow <= row)
+ continue;
+
+ m_selection[i] += rowAdjustment;
+ }
+
+ if(m_currentRow > row)
+ ChangeCurrentRow(m_currentRow + rowAdjustment);
+
+ m_count = -1;
+ UpdateDisplay();
+ // Send the expanded event
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_EXPANDED,node->GetItem());
+ }
+}
+
+void wxDataViewMainWindow::Collapse(unsigned int row)
+{
+ if (IsList())
+ return;
+
+ wxDataViewTreeNode *node = GetTreeNodeByRow(row);
+ if (!node)
+ return;
+
+ if (!node->HasChildren())
+ {
+ delete node;
+ return;
+ }
+
+ if (node->IsOpen())
+ {
+ wxDataViewEvent e =
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSING,node->GetItem());
+ if( e.GetSkipped() )
+ return;
+
+ // Find out if there are selected items below the current node.
+ bool selectCollapsingRow = false;
+ const unsigned rowAdjustment = node->GetSubTreeCount();
+ unsigned maxRowToBeTested = row + rowAdjustment;
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ if(testRow > row && testRow <= maxRowToBeTested)
+ {
+ selectCollapsingRow = true;
+ // get out as soon as we have found a node that is selected
+ break;
+ }
+ }
+
+ node->ToggleOpen();
+
+ // If the node to be closed has selected items the user won't see those any longer.
+ // We select the collapsing node in this case.
+ if(selectCollapsingRow)
+ {
+ SelectAllRows(false);
+ ChangeCurrentRow(row);
+ SelectRow(row, true);
+ SendSelectionChangedEvent(GetItemByRow(row));
+ }
+ else
+ {
+ // if there were no selected items below our node we still need to "fix" the
+ // selection list to adjust for the changing of the row indices.
+ // We actually do the opposite of what we are doing in Expand().
+ for(unsigned i=0; i<m_selection.size(); ++i)
+ {
+ const unsigned testRow = m_selection[i];
+ // all rows above us are not affected, so skip them
+ if(testRow <= row)
+ continue;
+
+ m_selection[i] -= rowAdjustment;
+ }
+
+ // if the "current row" is being collapsed away we change it to the current row ;-)
+ if(m_currentRow > row && m_currentRow <= maxRowToBeTested)
+ ChangeCurrentRow(row);
+ else if(m_currentRow > row)
+ ChangeCurrentRow(m_currentRow - rowAdjustment);
+ }
+
+ m_count = -1;
+ UpdateDisplay();
+ SendExpanderEvent(wxEVT_COMMAND_DATAVIEW_ITEM_COLLAPSED,node->GetItem());
+ }
+}
+
+wxDataViewTreeNode * wxDataViewMainWindow::FindNode( const wxDataViewItem & item )
+{
+ const wxDataViewModel * model = GetOwner()->GetModel();
+ if( model == NULL )
+ return NULL;
+
+ if (!item.IsOk())
+ return m_root;
+
+ // Compose the parent-chain for the item we are looking for
+ wxVector<wxDataViewItem> parentChain;
+ wxDataViewItem it( item );
+ while( it.IsOk() )
+ {
+ parentChain.push_back(it);
+ it = model->GetParent(it);
+ }
+
+ // Find the item along the parent-chain.
+ // This algorithm is designed to speed up the node-finding method
+ wxDataViewTreeNode* node = m_root;
+ for( unsigned iter = parentChain.size()-1; ; --iter )
+ {
+ if( node->HasChildren() )
+ {
+ if( node->GetChildrenNumber() == 0 )
+ {
+ SortPrepare();
+ ::BuildTreeHelper(model, node->GetItem(), node);
+ }
+
+ const wxDataViewTreeNodes& nodes = node->GetNodes();
+ bool found = false;
+
+ for (unsigned i = 0; i < nodes.GetCount(); ++i)
+ {
+ wxDataViewTreeNode* currentNode = nodes[i];
+ if (currentNode->GetItem() == parentChain[iter])
+ {
+ if (currentNode->GetItem() == item)
+ return currentNode;
+
+ node = currentNode;
+ found = true;
+ break;
+ }
+ }
+ if (!found)
+ return NULL;
+ }
+ else
+ return NULL;
+
+ if ( !iter )
+ break;
+ }
+ return NULL;
+}
+
+void wxDataViewMainWindow::HitTest( const wxPoint & point, wxDataViewItem & item,
+ wxDataViewColumn* &column )
+{
+ wxDataViewColumn *col = NULL;
+ unsigned int cols = GetOwner()->GetColumnCount();
+ unsigned int colnum = 0;
+ int x, y;
+ m_owner->CalcUnscrolledPosition( point.x, point.y, &x, &y );
+ for (unsigned x_start = 0; colnum < cols; colnum++)
+ {
+ col = GetOwner()->GetColumnAt(colnum);
+ if (col->IsHidden())
+ continue; // skip it!
+
+ unsigned int w = col->GetWidth();
+ if (x_start+w >= (unsigned int)x)
+ break;
+
+ x_start += w;
+ }
+
+ column = col;
+ item = GetItemByRow( GetLineAt( y ) );
+}
+
+wxRect wxDataViewMainWindow::GetItemRect( const wxDataViewItem & item,
+ const wxDataViewColumn* column )
+{
+ int xpos = 0;
+ int width = 0;
+
+ unsigned int cols = GetOwner()->GetColumnCount();
+ // If column is null the loop will compute the combined width of all columns.
+ // Otherwise, it will compute the x position of the column we are looking for.
+ for (unsigned int i = 0; i < cols; i++)
+ {
+ wxDataViewColumn* col = GetOwner()->GetColumnAt( i );
+
+ if (col == column)
+ break;
+
+ if (col->IsHidden())
+ continue; // skip it!
+
+ xpos += col->GetWidth();
+ width += col->GetWidth();
+ }
+
+ if(column != 0)
+ {
+ // If we have a column, we need can get its width directly.
+ if(column->IsHidden())
+ width = 0;
+ else
+ width = column->GetWidth();
+
+ }
+ else
+ {
+ // If we have no column, we reset the x position back to zero.
+ xpos = 0;
projects / wxWidgets.git / blobdiff