bool ValidateBasedOn(XamlStyle value)
{
if (value == null)
{
return(true);
}
return(value.TargetType.IsAssignableFrom(TargetType));
}
static void OnBasedOnResourceChanged(BindableObject bindable, object oldValue, object newValue)
{
XamlStyle style = (bindable as View)?.XamlStyle;
if (style == null)
{
return;
}
style.UnApplyCore(bindable, (XamlStyle)oldValue);
style.ApplyCore(bindable, (XamlStyle)newValue);
}
void UnApplyCore(BindableObject bindable, XamlStyle basedOn)
{
((AttachedCollection <TriggerBase>)Triggers).DetachFrom(bindable);
((AttachedCollection <Behavior>)Behaviors).DetachFrom(bindable);
foreach (Setter setter in Setters)
{
setter.UnApply(bindable, true);
}
if (basedOn != null)
{
((IStyle)basedOn).UnApply(bindable);
}
}
void BasedOnChanged(XamlStyle oldValue, XamlStyle newValue)
{
foreach (WeakReference <BindableObject> bindableRef in targets)
{
BindableObject bindable;
if (!bindableRef.TryGetTarget(out bindable))
{
continue;
}
UnApplyCore(bindable, oldValue);
ApplyCore(bindable, newValue);
}
}
void ApplyCore(BindableObject bindable, XamlStyle basedOn)
{
if (basedOn != null)
{
((IStyle)basedOn).Apply(bindable);
}
foreach (Setter setter in Setters)
{
setter.Apply(bindable, true);
}
((AttachedCollection <Behavior>)Behaviors).AttachTo(bindable);
((AttachedCollection <TriggerBase>)Triggers).AttachTo(bindable);
}
internal void Add(XamlStyle style)
{
if (string.IsNullOrEmpty(style.Class))
{
Add(style.TargetType.FullName, style);
}
else
{
IList <XamlStyle> classes;
object outclasses;
if (!TryGetValue(XamlStyle.StyleClassPrefix + style.Class, out outclasses) || (classes = outclasses as IList <XamlStyle>) == null)
{
classes = new List <XamlStyle>();
}
classes.Add(style);
this[XamlStyle.StyleClassPrefix + style.Class] = classes;
}
}
