/// <summary>
/// Update the current visual state of the button.
/// </summary>
/// <param name="useTransitions">
/// True to use transitions when updating the visual state, false to
/// snap directly to the new visual state.
/// </param>
internal virtual void UpdateVisualState(bool useTransitions)
{
if (IsLocked)
{
VisualStates.GoToState(this, useTransitions, VisualStates.StateLocked);
}
else
{
VisualStates.GoToState(this, useTransitions, VisualStates.StateUnlocked);
}
switch (ExpandDirection)
{
case ExpandDirection.Down:
VisualStates.GoToState(this, useTransitions, VisualStates.StateExpandDown);
break;
case ExpandDirection.Up:
VisualStates.GoToState(this, useTransitions, VisualStates.StateExpandUp);
break;
case ExpandDirection.Left:
VisualStates.GoToState(this, useTransitions, VisualStates.StateExpandLeft);
break;
default:
VisualStates.GoToState(this, useTransitions, VisualStates.StateExpandRight);
break;
}
// let the header know a change has possibly occured.
if (ExpanderButton != null)
{
ExpanderButton.UpdateVisualState(useTransitions);
}
// Handle the Common and Focused states
_interaction.UpdateVisualStateBase(useTransitions);
}
/// <summary>
/// Updates the state of the visual.
/// </summary>
/// <param name="useTransitions">If set to <c>true</c> use transitions.</param>
/// <remarks>The header will follow the parent accordionitem states.</remarks>
internal virtual void UpdateVisualState(bool useTransitions)
{
// the visualstate of the header is completely dependent on the parent state.
if (ParentAccordionItem == null)
{
return;
}
if (ParentAccordionItem.IsSelected)
{
VisualStates.GoToState(this, useTransitions, VisualStates.StateExpanded);
}
else
{
VisualStates.GoToState(this, useTransitions, VisualStates.StateCollapsed);
}
switch (ParentAccordionItem.ExpandDirection)
{
// no animations on an expanddirection change.
case ExpandDirection.Down:
VisualStates.GoToState(this, false, VisualStates.StateExpandDown);
break;
case ExpandDirection.Up:
VisualStates.GoToState(this, false, VisualStates.StateExpandUp);
break;
case ExpandDirection.Left:
VisualStates.GoToState(this, false, VisualStates.StateExpandLeft);
break;
default:
VisualStates.GoToState(this, false, VisualStates.StateExpandRight);
break;
}
}