public void TestExtenderMethods ()
{
TableLayoutPanel p = new TableLayoutPanel ();
Control c = new Button ();
Assert.AreEqual (new TableLayoutPanelCellPosition (-1, -1), p.GetCellPosition (c), "A1");
Assert.AreEqual (-1, p.GetColumn (c), "A2");
Assert.AreEqual (1, p.GetColumnSpan (c), "A3");
Assert.AreEqual (-1, p.GetRow (c), "A4");
Assert.AreEqual (1, p.GetRowSpan (c), "A5");
p.SetCellPosition (c, new TableLayoutPanelCellPosition (1, 1));
Assert.AreEqual (new TableLayoutPanelCellPosition (1, 1), p.GetCellPosition (c), "A6");
p.SetColumn (c, 2);
Assert.AreEqual (2, p.GetColumn (c), "A7");
p.SetRow (c, 2);
Assert.AreEqual (2, p.GetRow (c), "A9");
p.SetColumnSpan (c, 2);
Assert.AreEqual (2, p.GetColumnSpan (c), "A8");
p.SetRowSpan (c, 2);
Assert.AreEqual (2, p.GetRowSpan (c), "A10");
Assert.AreEqual (new TableLayoutPanelCellPosition (2, 2), p.GetCellPosition (c), "A11");
// ???????
//Assert.AreEqual (new TableLayoutPanelCellPosition (-1, -1), p.GetPositionFromControl (c), "A12");
//Assert.AreEqual (c, p.GetControlFromPosition(0, 0), "A13");
}
/// <summary>
/// Copies the last row of a This and all controls in it.
/// </summary>
/// <param name="This">This TableLayoutPanel.</param>
/// <param name="controlCallback">The control callback if any, passing targetRow,targetColumn,sourceControl,targetControl.</param>
/// <param name="allowSuspendingLayout">if set to <c>true</c> allows suspending the This layout during this process to prevent flickering.</param>
public static void CopyLastRow(this TableLayoutPanel This, Action <int, int, Control, Control> controlCallback = null, bool allowSuspendingLayout = true)
{
#if NET35
Debug.Assert(This != null);
#else
Contract.Requires(This != null);
#endif
if (allowSuspendingLayout)
{
This.SuspendLayout();
}
var lastRow = This.RowCount - 1;
// add line
This.RowCount++;
// add style
var rowStyle = This.RowStyles[lastRow];
This.RowStyles.Add(new RowStyle(rowStyle.SizeType, rowStyle.Height));
// copy controls
var alreadyVisitedControls = new Dictionary <Control, bool>();
for (var i = This.ColumnCount; i > 0;)
{
--i;
var control = This.GetControlFromPositionFixed(i, lastRow);
if (control == null || !alreadyVisitedControls.TryAdd(control, true))
{
continue;
}
var newControl = control.Duplicate();
if (controlCallback != null)
{
controlCallback(lastRow + 1, i, control, newControl);
}
This.Controls.Add(newControl, i, lastRow + 1);
This.SetRowSpan(newControl, This.GetRowSpan(control));
This.SetColumnSpan(newControl, This.GetColumnSpan(control));
}
if (allowSuspendingLayout)
{
This.ResumeLayout(true);
}
}
/// <summary>
/// Resizes editor controls to fit the last column
/// </summary>
/// <param name="tablePanel"></param>
private static void ResizeEditorControls(TableLayoutPanel tablePanel)
{
tablePanel.SuspendLayout();
try
{
// Make editors small
for (int row = 0; row < tablePanel.RowCount; ++row)
{
Control editorControl = tablePanel.GetControlFromPosition(tablePanel.ColumnCount - 1, row);
Option o = (editorControl != null) ? editorControl.Tag as Option : null;
if ((o == null) || (editorControl is Label))
{
continue;
}
// Change
editorControl.Anchor = AnchorStyles.None;
editorControl.Width = 5;
}
// Layout once
tablePanel.ResumeLayout(true);
tablePanel.SuspendLayout();
// Size now
int[] colWidths = tablePanel.GetColumnWidths();
for (int row = 0; row < tablePanel.RowCount; ++row)
{
Control editorControl = tablePanel.GetControlFromPosition(tablePanel.ColumnCount - 1, row);
Option o = (editorControl != null) ? editorControl.Tag as Option : null;
if ((o == null) || (editorControl is Label))
{
continue;
}
// Change
int colWidth = 0;
for (int col = 0; col < tablePanel.GetColumnSpan(editorControl); col++)
{
colWidth += colWidths[colWidths.Length - 1 - col];
}
editorControl.Width = colWidth - 10;
editorControl.Anchor = AnchorStyles.Left | AnchorStyles.Top;
}
}
finally
{
tablePanel.ResumeLayout(true);
}
}