boolean isSimpleColour();
/**
- * Answers true if the feature is coloured by label (description)
+ * Answers true if the feature is coloured by label (description) or by text
+ * value of an attribute
*
* @return
*/
void setAboveThreshold(boolean b);
/**
- * Answers true if the threshold is the minimum value (when
- * isAboveThreshold()) or maximum value (when isBelowThreshold()) of the
- * colour range; only applicable when isGraduatedColour and either
- * isAboveThreshold() or isBelowThreshold() answers true
- *
- * @return
- */
- boolean isThresholdMinMax();
-
- void setThresholdMinMax(boolean b);
-
- /**
* Returns the threshold value (if any), else zero
*
* @return
* @return
*/
void setAttributeName(String... name);
+
+ /**
+ * Answers true if colour has a threshold set, and the feature score (or other
+ * attribute selected for colouring) is outwith the threshold.
+ * <p>
+ * Answers false if not a graduated colour, or no threshold is set, or value
+ * is not outwith the threshold, or value is null or non-numeric.
+ *
+ * @param sf
+ * @return
+ */
+ boolean isOutwithThreshold(SequenceFeature sf);
+
+ /*
+ * Answers a human-readable text description of the colour, suitable for
+ * display as a tooltip, possibly internationalised for the user's locale.
+ *
+ * @return
+ */
+ String getDescription();
}