// This method defines the DragDrop event behavior.
protected override void OnDragDrop(DragEventArgs dea)
{
base.OnDragDrop(dea);
// Did a valid move operation occur?
if (dea.Effect == DragDropEffects.Move)
{
// The move operation is valid. Adjust the state
// of the GridStrip control's TableLayoutPanel,
// by swapping the positions of the source button
// and the empty cell button.
// Get the cell of the control to move.
TableLayoutPanelCellPosition sourcePos =
tableSettings.GetCellPosition(this.dragButton);
// Get the cell of the emptyCellButton.
TableLayoutPanelCellPosition dropPos =
tableSettings.GetCellPosition(this.emptyCellButton);
// Move the control to the empty cell.
tableSettings.SetCellPosition(this.dragButton, dropPos);
// Set the position of the empty cell to
// that of the previously occupied cell.
tableSettings.SetCellPosition(this.emptyCellButton, sourcePos);
// Reset the drag operation.
this.dragButton = null;
}
}
public void TableLayoutSettings_SetCellPosition_MultipleTimes_GetReturnsExpected(TableLayoutSettings settings)
{
var control = new ScrollableControl();
settings.SetCellPosition(control, new TableLayoutPanelCellPosition(1, 1));
Assert.Equal(new TableLayoutPanelCellPosition(1, 1), settings.GetCellPosition(control));
settings.SetCellPosition(control, new TableLayoutPanelCellPosition(2, 2));
Assert.Equal(new TableLayoutPanelCellPosition(2, 2), settings.GetCellPosition(control));
}
public void TableLayoutSettings_SetCellPosition_ValidControl_GetReturnsExpected(TableLayoutSettings settings, TableLayoutPanelCellPosition value)
{
var control = new ScrollableControl();
settings.SetCellPosition(control, value);
Assert.Equal(value, settings.GetCellPosition(control));
}
public void TableLayoutSettings_GetCellPosition_InvalidControlStub_ReturnsExpected()
{
var converter = new TableLayoutSettingsTypeConverter();
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(converter.ConvertFrom(@"<?xml version=""1.0"" encoding=""utf-16""?><Root />"));
Assert.Equal(new TableLayoutPanelCellPosition(-1, -1), settings.GetCellPosition("control"));
}
public void TableLayoutSettings_GetCellPosition_InvalidRow_ThrowsArgumentOutOfRangeException(TableLayoutSettings settings)
{
var control = new ScrollableControl();
settings.SetCellPosition(control, new TableLayoutPanelCellPosition {
Row = -2
});
Assert.Throws <ArgumentOutOfRangeException>("row", () => settings.GetCellPosition(control));
}
public void TableLayoutSettings_GetCellPosition_InvalidControl_ThrowsNotSupportedException()
{
var toolStrip = new ToolStrip {
LayoutStyle = ToolStripLayoutStyle.Table
};
TableLayoutSettings settings = Assert.IsType <TableLayoutSettings>(toolStrip.LayoutSettings);
Assert.Throws <NotSupportedException>(() => settings.GetCellPosition("control"));
}
public void TableLayoutSettings_GetCellPosition_NullControl_ThrowsArgumentNullException(TableLayoutSettings settings)
{
Assert.Throws <ArgumentNullException>("control", () => settings.GetCellPosition(null));
}
public void TableLayoutSettings_GetCellPosition_NoSuchControl_ReturnsExpected(TableLayoutSettings settings)
{
var control = new ScrollableControl();
Assert.Equal(new TableLayoutPanelCellPosition(-1, -1), settings.GetCellPosition(control));
}