Bug 31720 Browsing views should add listener to page [Browsing]
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/browsing/JavaBrowsingPart.java
}
			fPreviousSelectionProvider= part;
			return;
		}
		
		
		if (part != fPreviousSelectionProvider && selectedElement != null && !selectedElement.equals(currentInput) && isInputResetBy(selectedElement, currentInput, part)) {
			if (!isAncestorOf(selectedElement, currentInput))
				setInput(null);
			fPreviousSelectionProvider= part;
			return;
		} else	if (selection.isEmpty() && !isInputResetBy(part)) {
			fPreviousSelectionProvider= part;
			return;
		} else if (selectedElement == null && part == fPreviousSelectionProvider) {
			setInput(null);
			fPreviousSelectionProvider= part;
			return;
		}
		fPreviousSelectionProvider= part;
		
		 
		adjustInputAndSetSelection(selectedElement);
	}
	void setHasWorkingSetFilter(boolean state) {
		fHasWorkingSetFilter= state;
	}
	void setHasCustomSetFilter(boolean state) {
		fHasCustomFilter= state;
	}