private void ResetChildren()
{
// clear any existing children
for (int i = 0; i < Controls.Count; i++)
{
C1FlexDataTree childGrid = Controls[i] as C1FlexDataTree;
if (childGrid != null)
{
Controls.Remove(childGrid);
i--;
}
}
// reset all row heights
for (int i = 0; i < this.Rows.Count; i++)
{
Rows[i].Height = -1;
Rows[i].UserData = null;
}
// keep track of hierarchical column
_colChild = null;
foreach (Column col in Cols)
{
Type type = col.DataType;
if (type != null && typeof(IList).IsAssignableFrom(type) && type != typeof(byte[]))
{
_colChild = col;
break;
}
}
// fire event to allow customization of master/child grids
ParentGrid.OnSetupColumns(this);
}
// collapse row
public bool CollapseRow(int row)
{
// sanity
if (row < Rows.Fixed || row >= Rows.Count)
{
return(false);
}
// check that the row is expanded
C1FlexDataTree childGrid = Rows[row].UserData as C1FlexDataTree;
if (childGrid == null)
{
return(false);
}
// break references
Rows[row].UserData = null;
childGrid.Tag = null;
// clear child and remove it from parent
childGrid.Controls.Clear();
Controls.Remove(childGrid);
// delete container row
Rows.Remove(row + 1);
// done
return(true);
}
// expand row
public bool ExpandRow(int row)
{
// sanity
if (row < Rows.Fixed || row >= Rows.Count)
{
return(false);
}
// check that the row is not already expanded
C1FlexDataTree childGrid = Rows[row].UserData as C1FlexDataTree;
if (childGrid != null)
{
return(false);
}
// check that we have a data source for this row
object dataSource = _colChild != null ? _colChild[row] : null;
if (!(dataSource is IBindingList))
{
return(false);
}
// add node row (unbound) to display child
Rows.InsertNode(row + 1, -1);
// make new row non-editable (it's just a placeholder)
Rows[row + 1].AllowEditing = false;
// create child grid
childGrid = new C1FlexDataTree();
if (SuspendUpdates)
{
childGrid.SuspendUpdates = true;
}
childGrid.Visible = false;
childGrid.ScrollBars = ScrollBars.Horizontal;
// attach child grid to parent, set data source
Controls.Add(childGrid);
childGrid.DataSource = dataSource;
// save references:
// child grid Tag property contains a reference to the parent row
// parent row UserData contains a reference to the child grid
childGrid.Tag = Rows[row];
Rows[row].UserData = childGrid;
// move child grid into position, make it visible
childGrid.UpdatePosition();
childGrid.Visible = true;
if (!SuspendUpdates)
{
childGrid.Focus();
}
// done
return(true);
}
private void ApplyParentStyles(C1FlexDataTree parent)
{
if (parent != null)
{
Cols[0].Width = parent.Cols[0].Width;
ShowCursor = parent.ShowCursor;
AllowAddNew = parent.AllowAddNew;
AllowDelete = parent.AllowDelete;
BorderStyle = parent.BorderStyle;
Styles.ParseString(parent.Styles.BuildString(true));
}
}
// update position of child grids when size changes
//
// when the grid is resized, move child grids so they
// stay in their proper position.
//
override protected void OnSizeChanged(EventArgs e)
{
// always call base implementation
base.OnSizeChanged(e);
// if this is the top-level grid, update position of child grids
C1FlexDataTree parent = Parent as C1FlexDataTree;
if (!SuspendUpdates && parent == null)
{
UpdateChildren();
}
}
// update size/position of all child grids and of this grid within this parent.
// this is called when the grid scrolls, when it's size changes, and when
// rows or columns are added, removed, or resized.
private void UpdateChildren()
{
// update position of all children
for (int row = 0; row < Rows.Count; row++)
{
C1FlexDataTree child = Rows[row].UserData as C1FlexDataTree;
if (child != null)
{
child.SuspendUpdates = false;
child.UpdatePosition();
}
}
}
public GridHeader(C1FlexDataTree parent)
{
// initialize
Dock = DockStyle.Top;
BorderStyle = C1.Win.C1FlexGrid.Util.BaseControls.BorderStyleEnum.None;
Height = parent.Rows[Rows.Fixed].Top;
ScrollBars = ScrollBars.None;
// add to parent Controls collection
parent.Controls.Add(this);
// header grid uses parent as a DataSource, causing both grids to share
// the same underlying grid model (rows/cols).
DataSource = parent;
}
//--------------------------------------------------------------------------------
#region ** overrides
// initialize child grids by copying properties from parent
// border style, colors, etc.
override protected void OnParentChanged(EventArgs e)
{
// always call base implementation
base.OnParentChanged(e);
// copy properties from parent
C1FlexDataTree parent = Parent as C1FlexDataTree;
if (parent != null)
{
Cols[0].Width = parent.Cols[0].Width;
ShowCursor = parent.ShowCursor;
AllowAddNew = parent.AllowAddNew;
AllowDelete = parent.AllowDelete;
BorderStyle = parent.BorderStyle;
Styles.ParseString(parent.Styles.BuildString(true));
}
}
// update position of this child grid within its parent.
// this is called by the UpdateChildren method above and also
// when child grids are created.
private void UpdatePosition()
{
// sanity
C1FlexDataTree parent = Parent as C1FlexDataTree;
Row parentRow = Tag as Row;
if (parent == null || parentRow == null)
{
return;
}
// get cell rectangle
int row = parentRow.Index;
Rectangle rc = parent.GetCellRectDisplay(row, 0);
// calculate child location and client size
rc.X = rc.Right;
rc.Y = rc.Bottom;
rc.Width = Cols[Cols.Count - 1].Right;
rc.Width = Math.Max(Cols[Cols.Count - 1].Right, parent.ScrollableRectangle.Width);
rc.Height = Rows[Rows.Count - 1].Bottom;
// make sure child grid width doesn't extend past parent client width
int maxRight = parent.ClientSize.Width - 2;
if (rc.Right > maxRight)
{
rc.Width = maxRight - rc.X;
}
// update size/position
if (Location != rc.Location)
{
Location = rc.Location;
}
if (ClientSize != rc.Size)
{
ClientSize = rc.Size;
}
// update height of container row
parent.Rows[row + 1].Height = Height;
}
// customize grid display to show selected columns, captions, formats, and data maps
void _flex_SetupColumns(object sender, System.EventArgs e)
{
// get grid that was just bound
C1FlexDataTree grid = sender as C1FlexDataTree;
if (grid == null || grid.DataSource == null)
{
return;
}
// get source DataTable
CurrencyManager cm = (CurrencyManager)BindingContext[grid.DataSource, grid.DataMember];
DataTable dt = ((DataView)cm.List).Table;
// apply custom column order, captions, format
string[] columns = dt.ExtendedProperties["ShowColumns"] as string[];
if (columns != null)
{
SetupColumns(grid, columns);
}
// apply custom data maps
foreach (Column gridColumn in grid.Cols)
{
DataColumn dataColumn = dt.Columns[gridColumn.Name];
if (dataColumn == null)
{
continue;
}
gridColumn.DataMap = dataColumn.ExtendedProperties["DataMap"] as IDictionary;
if (gridColumn.DataMap != null)
{
gridColumn.TextAlign = TextAlignEnum.LeftCenter;
}
}
// all done, autosize to show mapped data
if (grid.AutoResize)
{
grid.AutoSizeCols(12);
}
}
// collapse row
public bool CollapseRow(int row)
{
// sanity
if (row < Rows.Fixed || row >= Rows.Count)
{
return(false);
}
// check that the row is expanded
C1FlexDataTree childGrid = Rows[row].UserData as C1FlexDataTree;
if (childGrid == null)
{
return(false);
}
// ** fire before collapse event
var e = new RowColEventArgs(row, -1);
OnBeforeCollapse(e);
if (e.Cancel)
{
return(false);
}
// break references
Rows[row].UserData = null;
childGrid.Tag = null;
// clear child and remove it from parent
childGrid.Controls.Clear();
Controls.Remove(childGrid);
// delete container row
Rows.Remove(row + 1);
// ** fire after collapse event
OnAfterCollapse(e);
// done
return(true);
}
// expand all rows
public void ExpandAll(int level)
{
bool needSuspendUpdates = !SuspendUpdates;
if (needSuspendUpdates)
{
// stop redrawing
SuspendUpdates = true;
}
// expand all child rows
for (int r = Rows.Fixed; r < Rows.Count; r++)
{
bool expanded = ExpandRow(r);
if (expanded)
{
r++;
}
}
// recurse to expand children
if (level > 0)
{
foreach (Control ctl in this.Controls)
{
C1FlexDataTree child = ctl as C1FlexDataTree;
if (child != null)
{
child.ExpandAll(level - 1);
}
}
}
// done
if (needSuspendUpdates)
{
SuspendUpdates = false;
}
}
// apply column information to a grid
// this will set the column positions, caption, format, and visibility
// (any columns not included in the 'columns' array will not be displayed
void SetupColumns(C1FlexDataTree grid, string[] columns)
{
// initialize column position
int position = grid.Cols.Fixed;
// apply column information
foreach (string s in columns)
{
// split column info (name, caption, format)
string[] columnInfo = s.Split(',');
// move column to proper position based on its name
Column column = grid.Cols[columnInfo[0].Trim()];
if (column != null)
{
column.Move(position);
position++;
// apply caption
if (columnInfo.Length > 1)
{
column.Caption = columnInfo[1].Trim();
}
// apply format
if (columnInfo.Length > 2)
{
column.Format = columnInfo[2].Trim();
}
}
}
// hide all other columns
for (int i = position; i < grid.Cols.Count; i++)
{
grid.Cols[i].Visible = false;
}
}
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
System.ComponentModel.ComponentResourceManager resources = new System.ComponentModel.ComponentResourceManager(typeof(Form1));
this.button1 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this._flex = new DataTree.C1FlexDataTree();
((System.ComponentModel.ISupportInitialize)(this._flex)).BeginInit();
this.SuspendLayout();
//
// button1
//
this.button1.Location = new System.Drawing.Point(10, 9);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(115, 28);
this.button1.TabIndex = 2;
this.button1.Text = "Customers";
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(134, 9);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(116, 28);
this.button2.TabIndex = 2;
this.button2.Text = "Orders";
this.button2.Click += new System.EventHandler(this.button2_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(259, 9);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(115, 28);
this.button3.TabIndex = 2;
this.button3.Text = "Nothing";
this.button3.Click += new System.EventHandler(this.button3_Click);
//
// _flex
//
this._flex.AllowAddNew = true;
this._flex.AllowDelete = true;
this._flex.ColumnInfo = "10,1,0,0,0,130,Columns:0{Width:34;Style:\"ImageAlign:RightCenter;\";}\t";
this._flex.Dock = System.Windows.Forms.DockStyle.Fill;
this._flex.DrawMode = C1.Win.C1FlexGrid.DrawModeEnum.OwnerDraw;
this._flex.HighLight = C1.Win.C1FlexGrid.HighLightEnum.WithFocus;
this._flex.Location = new System.Drawing.Point(0, 40);
this._flex.Name = "_flex";
this._flex.Rows.Count = 51;
this._flex.Rows.DefaultSize = 26;
this._flex.ShowCursor = true;
this._flex.Size = new System.Drawing.Size(782, 415);
this._flex.StyleInfo = resources.GetString("_flex.StyleInfo");
this._flex.TabIndex = 1;
this._flex.VisualStyle = C1.Win.C1FlexGrid.VisualStyle.Office2010Black;
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(7, 20);
this.ClientSize = new System.Drawing.Size(782, 455);
this.Controls.Add(this.button1);
this.Controls.Add(this._flex);
this.Controls.Add(this.button2);
this.Controls.Add(this.button3);
this.Font = new System.Drawing.Font("Segoe UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Name = "Form1";
this.Padding = new System.Windows.Forms.Padding(0, 40, 0, 0);
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "C1FlexGrid: Data Tree";
this.Load += new System.EventHandler(this.Form1_Load);
((System.ComponentModel.ISupportInitialize)(this._flex)).EndInit();
this.ResumeLayout(false);
}
override protected void OnAfterSort(SortColEventArgs e)
{
C1FlexDataTree parent = Parent as C1FlexDataTree;
parent.OnAfterSort(e);
}
// keep grids synchronized
override protected void OnAfterScroll(RangeEventArgs e)
{
C1FlexDataTree parent = Parent as C1FlexDataTree;
parent.ScrollPosition = new Point(ScrollPosition.X, parent.ScrollPosition.Y);
}
