/// <summary>
/// Delayed loading of the property inspector to avoid creating the entire list of property
/// editors immediately after selection. Keeps that app running smooth.
/// </summary>
/// <param name="performInitialization"></param>
/// <returns></returns>
void ProcessIncrementalPropertyAdd()
{
var numberToAdd = 10;
if (propertiesToAdd == null)
{
propertiesToAdd = PropertyInformation.GetProperties(target).GetEnumerator();
numberToAdd = 0;
}
var i = 0;
for (; i < numberToAdd && propertiesToAdd.MoveNext(); ++i)
{
// iterate over the PropertyInfo objects,
// setting the property grid's filter on each object,
// and adding those properties to the observable collection of propertiesToSort (this.properties)
var property = propertiesToAdd.Current;
property.Filter = Filter;
if (property.IsVisible)
{
Properties.Add(property);
}
allProperties.Add(property);
// checking whether a property is visible ... actually runs the property filtering code
if (property.IsVisible)
{
property.Index = visiblePropertyCount++;
}
}
if (i == numberToAdd)
{
processIncrementalCall.Enqueue();
}
else
{
propertiesToAdd = null;
}
}
public PropertyGrid2()
{
processRefreshCall = new DelayedCall(ProcessRefresh, DispatcherPriority.ApplicationIdle);
processIncrementalCall = new DelayedCall(ProcessIncrementalPropertyAdd, DispatcherPriority.Background);
filterCall = new DelayedCall(ProcessFilter, DispatcherPriority.Background);
InitializeComponent();
Loaded += HandleLoaded;
Unloaded += HandleUnloaded;
CommandBindings.Add(new CommandBinding(ShowBindingErrorsCommand, HandleShowBindingErrors,
CanShowBindingErrors));
CommandBindings.Add(new CommandBinding(ClearCommand, HandleClear, CanClear));
CommandBindings.Add(new CommandBinding(SortCommand, HandleSort));
filterTimer = new DispatcherTimer();
filterTimer.Interval = TimeSpan.FromSeconds(0.3);
filterTimer.Tick += (s, e) => {
filterCall.Enqueue();
filterTimer.Stop();
};
}
void EnqueueAfterSettingFilter()
{
filterCall.Enqueue();
}