/// <summary>
/// Initializes a new instance of the SaveElementState_Component class.
/// </summary>
public SaveElementState_Component()
: base("Save Element States", "SaveStates",
"This component lets you save the states of selected elements for later retrieval",
"Human UI", "UI Main")
{
savedStates = new StateSet_Goo();
}
/// <summary>
/// This is the method that actually does the work.
/// </summary>
/// <param name="DA">The DA object is used to retrieve from inputs and store in outputs.</param>
protected override void SolveInstance(IGH_DataAccess DA)
{
bool restore = false;
string setName = "";
StateSet_Goo states = null;
if (!DA.GetData <StateSet_Goo>("Saved States", ref states))
{
return;
}
if (!DA.GetData <string>("State Name to restore", ref setName))
{
return;
}
DA.GetData <bool>("Restore", ref restore);
//if there's an output param, pass out the value of restore.
if (Params.Output.Count > 0)
{
DA.SetData(0, restore);
}
if (!restore)
{
return;
}
//retrieve the appropriate state from the state set dictionary
State stateToRestore = states.states[setName];
//restore state
foreach (KeyValuePair <UIElement_Goo, object> elementState in stateToRestore.stateDict)
{
UIElement element = elementState.Key.element;
//if it has a parent, it's a real element that exists - if the parent is null we are in a new document session and the original element
//may not really exist any longer.
var parent = System.Windows.Media.VisualTreeHelper.GetParent(element);
//This is the situation when opening a definition fresh - we have to retrtieve the element based on the saved state's
//component instance guid and output data index. Because there's no way to serialize a UIElement we have to retrieve it
// from the component actively creating it (or more precisely a new but identical instance of it)
if (parent == null)
{
Guid id = elementState.Key.instanceGuid;
int index = elementState.Key.index;
UIElement_Goo newGoo = SaveElementState_Component.getElementGoo(this.OnPingDocument(), id, index);
element = newGoo.element;
}
//Once we've got the element, try to set its value.
HUI_Util.TrySetElementValue(HUI_Util.extractBaseElement(element), elementState.Value);
}
}
