public static HistoricalCourseEditorState ToCourseEditorState(this CourseData courseData)
{
var selectedPropType = PropType.RingNormal;
var propOrder = ImmutableList <PropId> .Empty;
var props = ImmutableDictionary <PropId, EditorProp> .Empty;
for (int i = 0; i < courseData.Props.Count; i++)
{
var prop = courseData.Props[i];
var editorProp = new EditorProp {
Id = PropId.CreateRandomId(), PropType = prop.PropType, Transform = prop.Transform
};
propOrder = propOrder.Add(editorProp.Id);
props = props.Add(editorProp.Id, editorProp);
selectedPropType = editorProp.PropType;
}
// Automatically select the first prop if possible
//var selectedProp = propOrder.Count > 0 ? Maybe.Just(propOrder[0]) : Maybe.Nothing<PropId>();
var selectedProp = Maybe.Nothing <PropId>();
return(new HistoricalCourseEditorState(courseData.Id, selectedPropType, selectedProp, props,
propOrder, false, false));
}
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 SelectPropType(this HistoricalCourseEditorState state, PropType propType)
{
var newProps = ImmutableDictionary <PropId, EditorProp> .Empty;
var newPropOrder = ImmutableList <PropId> .Empty;
var newSelectedProp = Maybe.Nothing <PropId>();
for (int i = 0; i < state.PropOrder.Count; i++)
{
var oldProp = state.Props[state.PropOrder[i]];
var newProp = new EditorProp {
Id = PropId.CreateRandomId(), PropType = propType, Transform = oldProp.Transform
};
newProps = newProps.Add(newProp.Id, newProp);
newPropOrder = newPropOrder.Add(newProp.Id);
if (state.SelectedProp.Equals(Maybe.Just(oldProp.Id)))
{
newSelectedProp = Maybe.Just(newProp.Id);
}
}
return(new HistoricalCourseEditorState(state.Id, propType, newSelectedProp, newProps, newPropOrder,
state.IsUndoPossibe, state.IsRedoPossibe));
}