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1 // Copyright (c) 2012 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 cr.define('options', function() { | |
6 /** @const */ var OptionsPage = options.OptionsPage; | |
7 | |
8 /** | |
9 * A dialog that will pop up when the user attempts to set the value of the | |
10 * Boolean |pref| to |true|, asking for confirmation. If the user clicks OK, | |
11 * the new value is committed to Chrome. If the user clicks Cancel or leaves | |
12 * the settings page, the new value is discarded. | |
13 * @constructor | |
14 * @param {string} name See OptionsPage constructor. | |
15 * @param {string} title See OptionsPage constructor. | |
16 * @param {string} pageDivName See OptionsPage constructor. | |
17 * @param {HTMLInputElement} okButton The confirmation button element. | |
18 * @param {HTMLInputElement} cancelButton The cancellation button element. | |
19 * @param {string} pref The pref that requires confirmation. | |
20 * @param {string} metric User metrics identifier. | |
21 * @param {string} confirmed_pref A pref used to remember whether the user has | |
22 * confirmed the dialog before. This ensures that the user is presented | |
23 * with the dialog only once. If left |undefined| or |null|, the dialog | |
24 * will pop up every time the user attempts to set |pref| to |true|. | |
25 * @extends {OptionsPage} | |
26 */ | |
27 function ConfirmDialog(name, title, pageDivName, okButton, cancelButton, pref, | |
28 metric, confirmed_pref) { | |
29 OptionsPage.call(this, name, title, pageDivName); | |
30 this.okButton = okButton; | |
31 this.cancelButton = cancelButton; | |
32 this.pref = pref; | |
33 this.metric = metric; | |
34 this.confirmed_pref = confirmed_pref; | |
35 this.confirmed_ = false; | |
36 } | |
37 | |
38 ConfirmDialog.prototype = { | |
39 // Set up the prototype chain | |
40 __proto__: OptionsPage.prototype, | |
41 | |
42 /** | |
43 * Handle changes to |pref|. Only uncommitted changes are relevant as these | |
44 * originate from user and need to be explicitly committed to take effect. | |
45 * Pop up the dialog or commit the change, depending on whether confirmation | |
46 * is needed. | |
47 * @param {Event} event Change event. | |
48 * @private | |
49 */ | |
50 onPrefChanged_: function(event) { | |
51 if (!event.value.uncommitted) | |
52 return; | |
53 if (event.value.value && !this.confirmed_) | |
James Hawkins
2012/10/24 00:54:17
Optional nit: For readability, I'd insert a blank
bartfab (slow)
2012/10/24 13:51:46
Done.
| |
54 OptionsPage.showPageByName(this.name, false); | |
55 else | |
56 Preferences.getInstance().commitPref(this.pref, this.metric); | |
57 }, | |
58 | |
59 /** | |
60 * Handle changes to |confirmed_pref| by caching them. | |
61 * @param {Event} event Change event. | |
62 * @private | |
63 */ | |
64 onConfirmedChanged_: function(event) { | |
65 this.confirmed_ = event.value.value; | |
66 }, | |
67 | |
68 /** | |
69 * @inheritDoc | |
70 */ | |
71 initializePage: function() { | |
72 this.okButton.onclick = this.handleConfirm.bind(this); | |
73 this.cancelButton.onclick = this.handleCancel.bind(this); | |
74 Preferences.getInstance().addEventListener( | |
75 this.pref, this.onPrefChanged_.bind(this)); | |
76 if (this.confirmed_pref) { | |
77 Preferences.getInstance().addEventListener( | |
78 this.confirmed_pref, this.onConfirmedChanged_.bind(this)); | |
79 } | |
80 }, | |
81 | |
82 /** | |
83 * Handle the confirm button by committing the |pref| change. If | |
84 * |confirmed_pref| has been specified, also remember that the dialog has | |
85 * been confirmed to avoid bringing it up in the future. | |
86 */ | |
87 handleConfirm: function() { | |
88 OptionsPage.closeOverlay(); | |
89 | |
90 Preferences.getInstance().commitPref(this.pref, this.metric); | |
91 if (this.confirmed_pref) | |
92 Preferences.setBooleanPref(this.confirmed_pref, true, true); | |
93 }, | |
94 | |
95 /** | |
96 * Handle the cancel button by rolling back the |pref| change without it | |
97 * ever taking effect. | |
98 */ | |
99 handleCancel: function() { | |
100 OptionsPage.closeOverlay(); | |
101 | |
102 Preferences.getInstance().rollbackPref(this.pref); | |
103 }, | |
104 }; | |
105 | |
106 return { | |
107 ConfirmDialog: ConfirmDialog | |
108 }; | |
109 }); | |
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