protected void updateNavigatable(ActionContext context) {
		if (context instanceof ListingActionContext) {
			NavigatableActionContext navContext = ((NavigatableActionContext) context);
			setNavigatable(navContext.getNavigatable());
			updateSelection(navContext);
		}
		else {
			updateSelectionFromCurrentNavigatable();
		}
	}
Create the action for to pop up the search dialog.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/searchtext/SearchTextPlugin.java