options.js

   1 /* Copyright (c) 2012 Robert Sesek <http://robert.sesek.com>
   2  *
   3  * Permission is hereby granted, free of charge, to any person obtaining a copy
   4  * of this software and associated documentation files (the "Software"), to
   5  * deal in the Software without restriction, including without limitation the
   6  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
   7  * sell copies of the Software, and to permit persons to whom the Software is
   8  * furnished to do so, subject to the following conditions:
   9  *
  10  * The above copyright notice and this permission notice shall be included in
  11  * all copies or substantial portions of the Software.
  12  *
  13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  18  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  19  * DEALINGS IN THE SOFTWARE.
  20  */
  21
  22 (function main() {
  23   document.addEventListener('DOMContentLoaded', function() {
  24     var controller = new SkeletonKeyOptions(window);
  25   });
  26 })();
  27
  28 /**
  29  * SkeletonKeyOptions is a controller for both retrieving settings and for
  30  * displaying the view.
  31  *
  32  * @param {Window} win The window and document on wich to operate.
  33  */
  34 var SkeletonKeyOptions = SkeletonKeyOptions || function(win) {
  35   if (win) {
  36     this._storage = win.localStorage;
  37     this._maxLength = win.document.getElementById('maxlength');
  38     this._saveButton = win.document.getElementById('save');
  39     this._saveButton.onclick = this.onSave.bind(this);
  40   }
  41 };
  42
  43 /**
  44  * Local storage key constants.
  45  * @priate
  46  */
  47 SkeletonKeyOptions.prototype._MIN_LENGTH_KEY = 'minlength';
  48 SkeletonKeyOptions.prototype._MAX_LENGTH_KEY = 'maxlength';
  49
  50 /**
  51  * Gets the minimum password length.
  52  * @returns {int}
  53  */
  54 SkeletonKeyOptions.prototype.getMinimumPasswordLength = function() {
  55   if (this._storage) {
  56     var setting = this._storage.getItem(this._MIN_LENGTH_KEY);
  57     if (setting)
  58       return setting;
  59   }
  60   return 6;
  61 };
  62
  63 /**
  64  * Gets the maximum password length.
  65  * @returns {int}
  66  */
  67 SkeletonKeyOptions.prototype.getMaximumPasswordLength = function() {
  68   if (this._storage) {
  69     var setting = this._storage.getItem(this._MAX_LENGTH_KEY);
  70     if (setting)
  71       return setting;
  72   }
  73   return 18;
  74 };
  75
  76 /**
  77  * Saves the options. Requires a document.
  78  */
  79 SkeletonKeyOptions.prototype.onSave = function() {
  80   if (!this._storage)
  81     return;
  82
  83   this._storage.setItem(this._MAX_LENGTH_KEY, this._maxLength.value);
  84 };