Implements metrics for destination search.

chrome/browser/resources/print_preview/print_preview_utils.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @param {string} toTest The string to be tested.
  * @return {boolean} True if |toTest| contains only digits. Leading and trailing
  *     whitespace is allowed.
  */
 function isInteger(toTest) {
@@ skipping 169 matching lines @@
     var tempFrom = pageSet[i];
     while (i + 1 < pageSet.length && pageSet[i + 1] == pageSet[i] + 1)
       ++i;
     var tempTo = pageSet[i];
     pageRanges.push({'from': tempFrom, 'to': tempTo});
   }
   return pageRanges;
 }
 
 /**
+ * @param {!HTMLElement} element Element to check for visibility.
+ * @return {boolean} Whether the given element is visible.
+ */
+function getIsVisible(element) {
+  return !element.hidden;
+}
+
+/**
  * Shows or hides an element.
- * @param {Element} element Element to show or hide.
+ * @param {!HTMLElement} element Element to show or hide.
  * @param {boolean} isVisible Whether the element should be visible or not.
  */
 function setIsVisible(element, isVisible) {
   element.hidden = !isVisible;
 }
 
 /**
  * @param {!Array} array Array to check for item.
  * @param {*} item Item to look for in array.
  * @return {boolean} Whether the item is in the array.
  */
 function arrayContains(array, item) {
   return array.indexOf(item) != -1;
 }