public boolean isSatelliteShowing() {
		Component[] comps = layeredPane.getComponentsInLayer(SATELLITE_VIEWER_LAYER);
		if (comps.length != 0) {
			return true; // satellite is in this component
		}

		// it may be in another window--see if it is showing
		return satelliteViewer.isShowing();
	}
Sets the given vertex to be the focused vertex.  This will be the only focused vertex.

@param vertex the vertex
Ghidra/Framework/Graph/src/main/java/ghidra/graph/viewer/GraphComponent.java