/// <summary>
/// Create various events that tie the functionality of the spreadsheet
/// </summary>
/// <param name="input">Input element to attach events to</param>
private void AttachEvents(InputElement input)
{
input.AddEventListener("blur", delegate(ElementEvent @event)
{
GetRowHeader(@event.SrcElement).ClassList.Remove("selected");
GetColumnHeader(@event.SrcElement).ClassList.Remove("selected");
ProcessCell((InputElement)@event.SrcElement);
}, false);
input.AddEventListener("focus", delegate(ElementEvent @event)
{
GetRowHeader(@event.SrcElement).ClassList.Add("selected");
GetColumnHeader(@event.SrcElement).ClassList.Add("selected");
object formula = @event.SrcElement.GetAttribute("data-formula");
if (formula != null && formula.ToString().Length > 1)
{
input.Value = formula.ToString();
}
}, false);
input.AddEventListener("keydown", delegate(ElementEvent @event)
{
if (@event.KeyCode == 27) //Escape
{
input.Value = "";
input.Blur();
}
else if (@event.KeyCode == 38) // up arrow
{
SetFocusFromCellTo(@event.SrcElement.ID, 0, -1);
@event.PreventDefault();
}
else if (@event.KeyCode == 40) // down arrow
{
SetFocusFromCellTo(@event.SrcElement.ID, 0, 1);
@event.PreventDefault();
}
else if (@event.KeyCode == 37) // left arrow
{
SetFocusFromCellTo(@event.SrcElement.ID, -1, 0);
@event.PreventDefault();
}
else if (@event.KeyCode == 39) // right arrow
{
SetFocusFromCellTo(@event.SrcElement.ID, 1, 0);
@event.PreventDefault();
}
}, true);
input.AddEventListener("keypress", delegate(ElementEvent @event)
{
if (@event.KeyCode == 13) // Enter Key
{
input.Blur();
SetFocusFromCellTo(@event.SrcElement.ID, 0, 1);
@event.PreventDefault();
}
}, false);
}