Refactor print preview web ui

chrome/browser/resources/print_preview/previewarea/margin_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.
 
 cr.define('print_preview', function() {
   'use strict';
 
   /**
    * Checks if |text| has a valid margin value format. A valid format is
    * parsable as a number and is greater than zero.
    * Example: "1.00", "1", ".5", "1.1" are valid values.
    * Example: "1.4dsf", "-1" are invalid.
    * Note: The inch symbol (") at the end of |text| is allowed.
    *
    * @param {string} text The text to check.
+   * @param {print_preview.MeasurementSystem} measurementSystem Used to handle
+   *     parsing local units.
    * @return {number} The margin value represented by |text| or null if |text|
    *     does not represent a valid number.
    */
-  function extractMarginValue(text) {
+  function extractMarginValue(text, measurementSystem) {
     // Removing whitespace anywhere in the string.
     text = text.replace(/\s*/g, '');
     if (text.length == 0)
       return -1;
-    var validationRegex = getValidationRegExp();
+    var validationRegex = getValidationRegExp(measurementSystem);
     if (validationRegex.test(text)) {
       // Replacing decimal point with the dot symbol in order to use
       // parseFloat() properly.
-      var replacementRegex = new RegExp('\\' +
-          print_preview.MarginSettings.decimalPoint + '{1}');
+      var replacementRegex =
+          new RegExp('\\' + measurementSystem.decimalDelimeter + '{1}');
       text = text.replace(replacementRegex, '.');
       return parseFloat(text);
     }
     return -1;
   }
 
   /**
+   * @param {print_preview.MeasurementSystem} measurementSystem Contains the
+   *     delimeters used in this system.
    * @return {RegExp} A regular expression for validating the input of the user.
    *     It takes into account the user's locale.
    */
-  function getValidationRegExp() {
+  function getValidationRegExp(measurementSystem) {
     var regex = new RegExp('(^\\d+)(\\' +
-       print_preview.MarginSettings.thousandsPoint + '\\d{3})*(\\' +
-       print_preview.MarginSettings.decimalPoint + '\\d+)*' +
-       (!print_preview.MarginSettings.useMetricSystem ? '"?' : '(mm)?') + '$');
+       measurementSystem.thousandsDelimeter + '\\d{3})*(\\' +
+       measurementSystem.decimalDelimeter + '\\d+)*' +
+       '(' + measurementSystem.unitSymbol + ')?' + '$');
     return regex;
   }
 
   var marginValidationStates = {
     TOO_SMALL: 0,
     WITHIN_RANGE: 1,
     TOO_BIG: 2,
     NOT_A_NUMBER: 3
   };
 
@@ skipping 123 matching lines @@
         convertPointsToLocaleUnitsAndBack,
     convertPointsToLocaleUnitsText: convertPointsToLocaleUnitsText,
     convertLocaleUnitsToPoints: convertLocaleUnitsToPoints,
     extractMarginValue: extractMarginValue,
     marginValidationStates: marginValidationStates,
     Rect: Rect,
     validateMarginText: validateMarginText,
     validateMarginValue: validateMarginValue
   };
 });