ectsChanged() signal is emitted when the active objects changes and the Qtilities::CoreGui::ObserverWidget::observerContextChanged() signal is emitted as soon as the observer context in the widget change. This would happen for example when the user push down into a tree hierarchy.

\section observer_and_widget_integration Observer hints: Telling item views how they should show an observer context

Observers can provide display hints to any observer widgets in which it is displayed. The available hints are d