public void Evaluate()
{
ReflowDocument document = ParentSheet.document;
// Test the query now:
bool testQuery = Query.IsTrue(document);
if (testQuery == PreviousStatus)
{
// Unchanged.
return;
}
PreviousStatus = testQuery;
if (testQuery)
{
// This query is now active.
Activate(document);
}
else
{
// This query is now no longer active.
Deactivate(document);
}
}
public void AddToDocument(ReflowDocument document)
{
if (Query == null || Query.IsTrue(document))
{
if (ImportedSheet == null)
{
DownloadNow();
// Add it:
ParentSheet.document.AddStyle(ImportedSheet, null);
}
else
{
ImportedSheet.ReAddSheet(document);
}
}
}
public override bool IsTrue(ReflowDocument document)
{
return(!Input1.IsTrue(document));
}
public override bool IsTrue(ReflowDocument document)
{
// Must both be true:
return(Input1.IsTrue(document) && Input2.IsTrue(document));
}