// create group row to show column footer cells
// NOTE:
// using a group row because that is read-only and provides
// automatic aggregates when the column's GroupAggregate
// property is set.
void AddColumnFooter(C1.WPF.FlexGrid.C1FlexGrid flex)
{
flex.ColumnFooters.Columns.Add(new Column());
var gr = new C1.WPF.FlexGrid.GroupRow();
// customize appearance of the new row
gr.FontWeight = FontWeights.Bold;
gr.Background = new SolidColorBrush(Color.FromArgb(0xff, 0x80, 0x00, 0x00));
gr.Foreground = new SolidColorBrush(Colors.White);
// add the row to the ColumnFooters GridPanel
flex.ColumnFooters.Rows.Add(gr);
gr[0] = "Totals";
}
// checks whether there is a row after this one with a given level
static bool CheckNodeAfter(GroupRow row, int level)
{
var rows = row.Grid.Rows;
for (int i = row.Index + 1; i < rows.Count; i++)
{
var r = rows[i] as GroupRow;
if (r.Level < level)
{
return false;
}
if (r.Level == level)
{
return true;
}
}
return false;
}
// build a song to represent a group
// the GetChildDataItems method returns all songs that belong
// to this node, and the LINQ statement below calculates the total
// size, length, and average rating for the album/artist.
Song BuildGroupDataItem(GroupRow gr)
{
var gs = gr.GetDataItems().OfType<Song>();
return new Song()
{
Name = gr.Group.Name.ToString(),
Size = (long)gs.Sum(s => s.Size),
Duration = (long)gs.Sum(s => s.Duration),
Rating = (int)(gs.Average(s => s.Rating) + 0.5)
};
}
private static FrameworkElement GetGlyphTree(GroupRow gr, bool collapsed, Brush brush)
{
bool groupRowAboveData = gr.Grid.GroupRowPosition == GroupRowPosition.AboveData;
Border border = new Border();
border.Background = _brTransparent;
border.MinWidth = gr.Grid.TreeIndent;
if (gr.HasChildren)
{
Polygon polygon;
if (collapsed)
{
double[] values = {0, 0, 0, 8, 5, 4};
polygon = Util.Util.CreatePolygon(brush, values);
}
else if (groupRowAboveData)
{
double[] values = {0, 6, 6, 6, 6, 0};
polygon = Util.Util.CreatePolygon(brush, values);
}
else
{
double[] values = {0, 0, 6, 0, 6, 6};
polygon = Util.Util.CreatePolygon(brush, values);
}
border.Child = polygon;
border.MouseEnter += (s, e) => polygon.Fill = _brBlue;
border.MouseLeave += (s, e) => polygon.Fill = brush;
border.MouseLeftButtonDown += (s, e) =>
{
e.Handled = true;
int index = gr.Index;
if (!gr.Grid.FinishEditing())
{
return;
}
Util.Util.SetFocus(gr.Grid);
if (index <= -1 || gr.Grid.Rows.Count <= index)
{
return;
}
gr = gr.Grid.Rows[index] as GroupRow;
if (Kbd.IsControlPressed())
{
if (gr != null)
{
gr.Grid.CollapseGroupsToLevel((gr.IsCollapsed ? gr.Level + 1 : gr.Level));
}
return;
}
if (gr != null)
{
gr.IsCollapsed = !gr.IsCollapsed;
}
};
}
return border;
}
public NodeCell(Row row)
: base(row)
{
// create collapsed/expanded images
if (_bmpExpanded == null)
{
_bmpExpanded = ImageCell.GetImageSource("Expanded.png");
_bmpCollapsed = ImageCell.GetImageSource("Collapsed.png");
}
// store reference to row
_gr = row as GroupRow;
// initialize collapsed/expanded image
_nodeImage = new Image();
_nodeImage.Source = _gr.IsCollapsed ? _bmpCollapsed : _bmpExpanded;
_nodeImage.Width = _nodeImage.Height = 9;
_nodeImage.VerticalAlignment = VerticalAlignment.Center;
_nodeImage.Stretch = Stretch.None;
_nodeImage.MouseLeftButtonDown += img_MouseLeftButtonDown;
_nodeImage.MouseEnter += img_MouseEnter;
_nodeImage.MouseLeave += img_MouseLeave;
_nodeImage.Opacity = ALPHA;
Children.Insert(0, _nodeImage);
// make text bold
TextBlock.FontWeight = FontWeights.Bold;
}
void AddPersonToGrid(Person p, C1FlexGrid flex, int level)
{
// create a row for this person
Row row;
if (p.Children.Count > 0 || true)
{
var gr = new GroupRow();
gr.Level = level;
row = gr;
}
else
{
row = new Row();
}
row.DataItem = p;
// add this person to the grid
flex.Rows.Add(row);
// and add any children
foreach (var child in p.Children)
{
AddPersonToGrid(child, flex, level + 1);
}
}
private int InsertGroupRows(CollectionViewGroup group, int level, int index, Dictionary<object, GroupRow> groupRows)
{
GroupRow groupRow;
INotifyCollectionChanged items = group.Items;
if (items != null)
{
items.CollectionChanged -= ncc_CollectionChanged;
items.CollectionChanged += ncc_CollectionChanged;
}
if (!groupRows.TryGetValue(groupRows, out groupRow))
{
groupRow = new GroupRow();
}
groupRow.Level = level;
groupRow.Group = group;
int i = index;
if (!group.IsBottomLevel)
{
foreach (CollectionViewGroup item in group.Items)
{
i = InsertGroupRows(item, level + 1, i, groupRows);
}
}
else
{
i += group.ItemCount;
}
bool collapsed;
if (GroupRowPosition != GroupRowPosition.AboveData)
{
collapsed = i < Rows.Count && Rows[i].GetFlag(RowColFlags.ParentCollapsed);
Rows.Insert(i, groupRow);
}
else
{
collapsed = (index < Rows.Count && Rows[index].GetFlag(RowColFlags.ParentCollapsed));
Rows.Insert(index, groupRow);
}
groupRow.SetFlag(RowColFlags.Collapsed, collapsed);
return i + 1;
}
private void AddHierarchicalRow(object item, IEnumerable children, int level)
{
GroupRow groupRow = new GroupRow();
groupRow.Level = level;
groupRow.IsReadOnly = false;
groupRow.DataItem = item;
if (GroupRowPosition == GroupRowPosition.AboveData)
{
Rows.Add(groupRow);
}
if (children != null)
{
INotifyCollectionChanged ncc = children as INotifyCollectionChanged;
if (ncc != null)
{
_nccChildren.Add(ncc);
ncc.CollectionChanged += nccChildren_CollectionChanged;
}
foreach (object child in children)
{
PropertyInfo property = child.GetType().IsAssignableFrom(ItemType) ? _piChildItems : child.GetType().GetProperty(ChildItemsPath);
IList children2;
if (property != null)
{
children2 = property.GetValue(child, null) as IList;
}
else
{
children2 = null;
}
AddHierarchicalRow(child, children2, level + 1);
}
}
if (GroupRowPosition == GroupRowPosition.BelowData)
{
Rows.Add(groupRow);
}
}
// create group row to show column footer cells
// NOTE:
// using a group row because that is read-only and provides
// automatic aggregates when the column's GroupAggregate
// property is set.
void AddColumnFooter(C1.WPF.FlexGrid.C1FlexGrid flex)
{
flex.ColumnFooters.Columns.Add(new Column());
var gr = new C1.WPF.FlexGrid.GroupRow();
// customize appearance of the new row
gr.FontWeight = FontWeights.Bold;
gr.Background = new SolidColorBrush(Color.FromArgb(0xff, 0x80, 0x00, 0x00));
gr.Foreground = new SolidColorBrush(Colors.White);
// add the row to the ColumnFooters GridPanel
flex.ColumnFooters.Rows.Add(gr);
gr[0] = "Totals";
}
// creates the element that represents a tree node
FrameworkElement CreateTreeNode(C1FlexGrid flex, GroupRow row)
{
var g = new Grid();
for (int i = 0; i <= row.Level; i++)
{
var cd = new ColumnDefinition();
cd.Width = new GridLength(flex.TreeIndent);
g.ColumnDefinitions.Add(cd);
}
// icon connectors (left and up)
if (row.Level > 0)
{
var rc = CreateConnector(flex.TreeIndent, _connThickness);
rc.HorizontalAlignment = HorizontalAlignment.Left;
rc.VerticalAlignment = VerticalAlignment.Center;
rc.Margin = new Thickness(flex.TreeIndent / 2, 0, 0, 0);
rc.SetValue(Grid.ColumnProperty, row.Level - 1);
rc.SetValue(Grid.ColumnSpanProperty, 2);
g.Children.Add(rc);
rc = CreateConnector(_connThickness, row.ActualHeight / 2);
rc.HorizontalAlignment = HorizontalAlignment.Center;
rc.VerticalAlignment = VerticalAlignment.Top;
rc.SetValue(Grid.ColumnProperty, row.Level - 1);
g.Children.Add(rc);
}
// icon connector (down)
if (row.HasChildren && !row.IsCollapsed)
{
var rc = CreateConnector(_connThickness, row.ActualHeight / 2);
rc.HorizontalAlignment = HorizontalAlignment.Center;
rc.VerticalAlignment = VerticalAlignment.Bottom;
rc.SetValue(Grid.ColumnProperty, row.Level);
g.Children.Add(rc);
}
// inter-node connectors
for (int i = row.Level; i > 0; i--)
{
if (CheckNodeAfter(row, i))
{
var rc = CreateConnector(_connThickness, row.ActualHeight);
rc.HorizontalAlignment = HorizontalAlignment.Center;
rc.VerticalAlignment = VerticalAlignment.Top;
rc.SetValue(Grid.ColumnProperty, i - 1);
g.Children.Add(rc);
}
}
// icon
var nodeIcon = new Image();
nodeIcon.Source =
row.HasChildren == false ? _bmpNoChildren :
row.IsCollapsed ? _bmpCollapsed : _bmpExpanded;
nodeIcon.Stretch = Stretch.None;
nodeIcon.SetValue(Grid.ColumnProperty, row.Level + 1);
g.Children.Add(nodeIcon);
if (row.HasChildren)
{
nodeIcon.MouseLeftButtonDown += (s, e) => { row.IsCollapsed = !row.IsCollapsed; };
}
// done
g.Margin = new Thickness(0, 0, 4, 0);
return g;
}
