Nuevo plugin Additionals 2.0.20

plugins/additionals/assets/javascripts/additionals_observe_field.js

@@ -0,0 +1,52 @@
+// see https://github.com/splendeo/jquery.observe_field
+
+(function($) {
+  'use strict';
+
+  $.fn.live_observe_field = function(frequency, callback) {
+
+    frequency = frequency * 100; // translate to milliseconds
+
+    return this.each(function() {
+      var $this = $(this);
+      var prev = $this.val();
+      var prevChecked = $this.prop('checked');
+
+      var check = function() {
+        if (removed()) {
+          // if removed clear the interval and don't fire the callback
+          if (ti)
+            clearInterval(ti);
+          return;
+        }
+
+        var val = $this.val();
+        var checked = $this.prop('checked');
+        if (prev != val || checked != prevChecked) {
+          prev = val;
+          prevChecked = checked;
+          $this.map(callback); // invokes the callback on $this
+        }
+      };
+
+      var removed = function() {
+        return $this.closest('html').length == 0;
+      };
+
+      var reset = function() {
+        if (ti) {
+          clearInterval(ti);
+          ti = setInterval(check, frequency);
+        }
+      };
+
+      check();
+      var ti = setInterval(check, frequency); // invoke check periodically
+
+      // reset counter after user interaction
+      $this.bind('keyup click mousemove', reset); // mousemove is for selects
+    });
+
+  };
+
+})(jQuery);