Add functions to output options arrays for constants.

d3_sankey.module

@@ -183,6 +183,46 @@ function d3_sankey_libraries_info_alter(&$libraries) {
 
 /* Helper functions. */
 
+/**
+ * Helper function to return an array of Sankey chart type options.
+ *
+ * The output from this function is intended to be used as the '#options'
+ * property for Form API 'checkboxes', 'radios', 'select', and 'tableselect'
+ * controls.
+ *
+ * @return array
+ *   An associative array, where the key is a string representing the type of
+ *   Sankey chart, and the value is a string containing a translated label for
+ *   that type of Sankey chart.
+ */
+function d3_sankey_options_sankeytype() {
+  return array(
+    D3_SANKEY_SANKEYTYPE_DEFAULT => t('Default'),
+    D3_SANKEY_SANKEYTYPE_SELECTION => t('Current item selection'),
+    D3_SANKEY_SANKEYTYPE_PATH => t('Current item and path selection'),
+  );
+}
+
+/**
+ * Helper function to return an array of Sankey label alignment options.
+ *
+ * The output from this function is intended to be used as the '#options'
+ * property for Form API 'checkboxes', 'radios', 'select', and 'tableselect'
+ * controls.
+ *
+ * @return array
+ *   An associative array, where the key is a string representing the alignment
+ *   for node labels in a Sankey chart, and the value is a string containing a
+ *   translated label for that type of label alignment.
+ */
+function d3_sankey_options_alignlabel() {
+  return array(
+    D3_SANKEY_ALIGNLABEL_AUTO => t('Automatically align labels'),
+    D3_SANKEY_ALIGNLABEL_START => t('Align labels to start of paths'),
+    D3_SANKEY_ALIGNLABEL_END => t('Align labels to end of paths'),
+  );
+}
+
 /**
  * Helper function to return the path to the libraries contained in this module.
  *