aUtils
, indicate where and what was clicked on.
+ *
+ * The following table describes what context flags and node combinations are
+ * possible.
+ *
+ * aContextFlags aUtils.targetNode
+ *
+ * CONTEXT_LINK
+ * CONTEXT_IMAGE
+ * CONTEXT_IMAGE | CONTEXT_LINK with as an ancestor
+ * CONTEXT_INPUT
+ * CONTEXT_INPUT | CONTEXT_IMAGE with type=image
+ * CONTEXT_TEXT