public SnoopUI()
{
this.TreeService = TreeService.From(this.CurrentTreeType);
this.filterCall = new DelayedCall(this.ProcessFilter, DispatcherPriority.Background);
this.InitializeComponent();
// wrap the following PresentationTraceSources.Refresh() call in a try/catch
// sometimes a NullReferenceException occurs
// due to empty <filter> elements in the app.config file of the app you are snooping
// see the following for more info:
// http://snoopwpf.codeplex.com/discussions/236503
// http://snoopwpf.codeplex.com/workitem/6647
try
{
PresentationTraceSources.Refresh();
PresentationTraceSources.DataBindingSource.Switch.Level = SourceLevels.Error;
}
catch (NullReferenceException)
{
// swallow this exception since you can snoop just fine anyways.
}
this.CommandBindings.Add(new CommandBinding(IntrospectCommand, this.HandleIntrospection));
this.CommandBindings.Add(new CommandBinding(RefreshCommand, this.HandleRefresh));
this.CommandBindings.Add(new CommandBinding(HelpCommand, this.HandleHelp));
this.CommandBindings.Add(new CommandBinding(InspectCommand, this.HandleInspect));
this.CommandBindings.Add(new CommandBinding(SelectFocusCommand, this.HandleSelectFocus));
this.CommandBindings.Add(new CommandBinding(SelectFocusScopeCommand, this.HandleSelectFocusScope));
//NOTE: this is up here in the outer UI layer so ESC will clear any typed filter regardless of where the focus is
// (i.e. focus on a selected item in the tree, not in the property list where the search box is hosted)
this.CommandBindings.Add(new CommandBinding(ClearSearchFilterCommand, this.ClearSearchFilterHandler));
this.CommandBindings.Add(new CommandBinding(CopyPropertyChangesCommand, this.CopyPropertyChangesHandler));
InputManager.Current.PreProcessInput += this.HandlePreProcessInput;
this.Tree.SelectedItemChanged += this.HandleTreeSelectedItemChanged;
// we can't catch the mouse wheel at the ZoomerControl level,
// so we catch it here, and relay it to the ZoomerControl.
this.MouseWheel += this.SnoopUI_MouseWheel;
this.filterTimer = new DispatcherTimer
{
Interval = TimeSpan.FromSeconds(0.3)
};
this.filterTimer.Tick += (s, e) =>
{
this.EnqueueAfterSettingFilter();
this.filterTimer.Stop();
};
}