public void activate() {
		if (!isFilterDisplayed) {
			setVisible(true);
			isFilterDisplayed = true;
		}

		requestFocus();
	}
Activates this filter by showing it, if not visible, and then requesting focus in the filter
text field.
Ghidra/Framework/Docking/src/main/java/docking/widgets/table/GTableFilterPanel.java