public InstancePropertyEditor(IPropertyEditorParams editorParams, Action <Widget> onValueChanged) : base(editorParams)
{
Selector = editorParams.DropDownListFactory();
Selector.LayoutCell = new LayoutCell(Alignment.Center);
var propertyType = typeof(T);
var meta = Yuzu.Metadata.Meta.Get(editorParams.Type, InternalPersistence.Instance.YuzuCommonOptions);
if (!propertyType.IsInterface && !propertyType.IsAbstract)
{
Selector.Items.Add(new CommonDropDownList.Item(propertyType.Name, propertyType));
}
foreach (var t in DerivedTypesCache.GetDerivedTypesFor(propertyType))
{
Selector.Items.Add(new CommonDropDownList.Item(t.Name, t));
}
EditorContainer.AddChangeLateWatcher(CoalescedPropertyValue(
comparator: (t1, t2) => t1 == null && t2 == null || t1 != null && t2 != null && t1.GetType() == t2.GetType()),
v => {
onValueChanged?.Invoke(ExpandableContent);
if (v.IsDefined)
{
Selector.Value = v.Value?.GetType();
}
else
{
Selector.Text = ManyValuesText;
}
}
);
Selector.Changed += a => {
if (a.ChangedByUser)
{
var type = (Type)Selector.Items[a.Index].Value;
SetProperty <object>((_) => type != null ? Activator.CreateInstance(type) : null);
}
};
var propertyMetaItem = meta.Items.FirstOrDefault(i => i.Name == editorParams.PropertyName);
var defaultValue = propertyMetaItem?.GetValue(meta.Default);
var resetToDefaultButton = new ToolbarButton(IconPool.GetTexture("Tools.Revert"))
{
Clicked = () => SetProperty(Cloner.Clone(defaultValue))
};
if (Selector.Items.Count == 1)
{
var t = Selector.Items[0].Value as Type;
var b = new ToolbarButton("Create")
{
TabTravesable = new TabTraversable(),
LayoutCell = new LayoutCell(Alignment.LeftCenter),
Padding = new Thickness(left: 5.0f),
HitTestTarget = true,
MinWidth = 0,
MaxWidth = float.PositiveInfinity
};
b.Clicked = () => {
b.Visible = false;
SetProperty <object>(_ => t != null ? Activator.CreateInstance(t) : null);
onValueChanged?.Invoke(ExpandableContent);
Expanded = true;
};
var value = CoalescedPropertyValue().GetValue();
b.Visible = Equals(value.Value, defaultValue);
resetToDefaultButton.Clicked = () => {
b.Visible = true;
SetProperty(defaultValue);
onValueChanged?.Invoke(ExpandableContent);
};
EditorContainer.AddNode(b);
EditorContainer.AddNode(Spacer.HStretch());
onValueChanged?.Invoke(ExpandableContent);
}
else
{
EditorContainer.Nodes.Insert(0, Selector);
}
EditorContainer.AddNode(resetToDefaultButton);
EditorContainer.AddChangeLateWatcher(CoalescedPropertyValue(), v => {
resetToDefaultButton.Visible = !Equals(v.Value, defaultValue);
});
}