public static HistoricalCourseEditorState UpdateProp(this HistoricalCourseEditorState state, EditorProp prop)
{
if (state.Props.ContainsKey(prop.Id))
{
return(state.Update(state.SelectedProp, state.Props.SetItem(prop.Id, prop), state.PropOrder));
}
else
{
return(state);
}
}
public static HistoricalCourseEditorState AddProp(this HistoricalCourseEditorState state, ImmutableTransform transform)
{
var propId = PropId.CreateRandomId();
var newProp = new EditorProp {
Id = propId, PropType = state.SelectedPropType, Transform = transform
};
// Immediately select the newly created prop
var selectedProp = Maybe.Just(propId);
return(state.Update(selectedProp, state.Props.Add(newProp.Id, newProp), state.PropOrder.Add(propId)));
}
public static HistoricalCourseEditorState UpdatePropOrder(this HistoricalCourseEditorState state, IImmutableList <PropId> newPropOrder)
{
return(state.Update(state.SelectedProp, state.Props, newPropOrder));
}
public static HistoricalCourseEditorState SelectProp(this HistoricalCourseEditorState state, Maybe <PropId> selectedPropId)
{
return(state.Update(selectedPropId, state.Props, state.PropOrder));
}
public static HistoricalCourseEditorState DeleteProp(this HistoricalCourseEditorState state, PropId id)
{
var selectedProp = state.SelectedProp.Equals(Maybe.Just(id)) ? Maybe.Nothing <PropId>() : state.SelectedProp;
return(state.Update(selectedProp, state.Props.Remove(id), state.PropOrder.Remove(id)));
}
