private void updateProviders() {
		AddressIndexMap addressIndexMap = layoutModel.getAddressIndexMap();
		for (OverviewProvider element : overviewProviders) {
			element.setProgram(getProgram(), addressIndexMap);
		}
		for (ChangeListener indexMapChangeListener : indexMapChangeListeners) {
			indexMapChangeListener.stateChanged(null);
		}
		if (layeredColorModel != null) {
			layeredColorModel.modelDataChanged(this);
		}
		else {
			propertyBasedColorModel.modelDataChanged(this);
		}
	}
Returns true if the field header component is showing.

@return true if showing
Ghidra/Features/Base/src/main/java/ghidra/app/util/viewer/listingpanel/ListingPanel.java