| // Copyright 2015 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. |
| |
| /** |
| * @fileoverview Common prefs behavior. |
| */ |
| |
| /** @polymerBehavior */ |
| var PrefsBehavior = { |
| /** |
| * Gets the pref at the given prefPath. Throws if the pref is not found. |
| * @param {string} prefPath |
| * @return {!chrome.settingsPrivate.PrefObject} |
| * @protected |
| */ |
| getPref: function(prefPath) { |
| var pref = /** @type {!chrome.settingsPrivate.PrefObject} */( |
| this.get(prefPath, this.prefs)); |
| assert(typeof pref != 'undefined', 'Pref is missing: ' + prefPath); |
| return pref; |
| }, |
| |
| /** |
| * Sets the value of the pref at the given prefPath. Throws if the pref is not |
| * found. |
| * @param {string} prefPath |
| * @param {*} value |
| * @protected |
| */ |
| setPrefValue: function(prefPath, value) { |
| this.getPref(prefPath); // Ensures we throw if the pref is not found. |
| this.set('prefs.' + prefPath + '.value', value); |
| }, |
| }; |
