Chromium Code Reviews Chromium Code Reviews
Issue 2760453002:
Creating options page and storing preferences. (Closed)
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| 1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 /** | |
| 6 * Alias for document.getElementById. | |
| 7 * | |
| 8 * @param {string} id | |
| 9 * @return {Element} | |
| 10 */ | |
| 11 let $ = function(id) { | |
| 12 let el = document.getElementById(id); | |
| 13 return el; | |
| 14 } | |
| 15 | |
| 16 /** | |
| 17 * Class to manage the options page. | |
| 18 * | |
| 19 * @constructor | |
| 20 */ | |
| 21 let SwitchAccessOptions = function() { | |
| 22 let background = chrome.extension.getBackgroundPage(); | |
| 23 | |
| 24 /** | |
| 25 * User preferences. | |
| 26 * | |
| 27 * @private | |
| 28 */ | |
| 29 this.switchAccessPrefs_ = background.switchAccess.switchAccessPrefs; | |
| 30 | |
| 31 document.addEventListener('DOMContentLoaded', this.init_.bind(this)); | |
|
dmazzoni
2017/03/22 21:53:53
Does 'load' work?
Another thing I usually do is j
elichtenberg
2017/03/22 23:02:29
'load' would work too, but 'DOMContentLoaded' is a
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| 32 document.addEventListener('change', this.handleInputChange_.bind(this)); | |
| 33 background.document.addEventListener('prefsUpdate', this.handlePrefsUpdate_); | |
| 34 }; | |
| 35 | |
| 36 SwitchAccessOptions.prototype = { | |
| 37 /** | |
| 38 * Initialize the options page by setting all elements representing a user | |
| 39 * preference to show the correct value. | |
| 40 * | |
| 41 * @private | |
| 42 */ | |
| 43 init_: function() { | |
| 44 let prefs = this.switchAccessPrefs_.getPrefs(); | |
| 45 $('enableAutoScan').checked = prefs['enableAutoScan']; | |
| 46 $('autoScanTime').value = prefs['autoScanTime']; | |
| 47 }, | |
| 48 | |
| 49 /** | |
| 50 * Handle a change by the user to an element representing a user preference. | |
| 51 * | |
| 52 * @param {!Event} event | |
| 53 * @private | |
| 54 */ | |
| 55 handleInputChange_: function(event) { | |
| 56 switch (event.target.id) { | |
| 57 case 'enableAutoScan': | |
| 58 this.switchAccessPrefs_.setPref(event.target.id, event.target.checked); | |
| 59 break; | |
| 60 case 'autoScanTime': | |
| 61 this.switchAccessPrefs_.setPref(event.target.id, event.target.value); | |
| 62 break; | |
| 63 } | |
| 64 }, | |
| 65 | |
| 66 /** | |
| 67 * Handle a change in user preferences. | |
| 68 * | |
| 69 * @param {!Event} event | |
| 70 * @private | |
| 71 */ | |
| 72 handlePrefsUpdate_: function(event) { | |
| 73 if (document.readyState === 'interactive' || | |
|
dmazzoni
2017/03/22 21:53:54
rather than checking document.readyState, how abou
elichtenberg
2017/03/22 23:02:29
Done. I agree, that does look better.
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| 74 document.readyState === 'complete') { | |
| 75 let updatedPrefs = event.detail; | |
| 76 for (let key of Object.keys(updatedPrefs)) { | |
| 77 switch (key) { | |
| 78 case 'enableAutoScan': | |
| 79 $(key).checked = updatedPrefs[key]; | |
| 80 break; | |
| 81 case 'autoScanTime': | |
| 82 $(key).value = updatedPrefs[key]; | |
| 83 break; | |
| 84 } | |
| 85 } | |
| 86 } | |
| 87 } | |
| 88 }; | |
| 89 | |
| 90 new SwitchAccessOptions(); | |
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