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// Copyright 2014 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('settime', function() {
/**
* TimeSetter handles a dialog to check and set system time. It can also
* include a timezone dropdown if timezoneId is provided.
*
* TimeSetter uses the system time to populate the controls initially and
* update them as the system time or timezone changes, and notifies Chrome
* when the user changes the time or timezone.
* @constructor
*/
function TimeSetter() {}
cr.addSingletonGetter(TimeSetter);
/** @const */ var BODY_PADDING_PX = 20;
/** @const */ var LABEL_PADDING_PX = 5;
TimeSetter.prototype = {
/**
* Performs initial setup.
*/
initialize: function() {
// Store values for reverting inputs when the user's date/time is invalid.
this.prevValues_ = {};
// The build time doesn't include a timezone, so subtract 1 day to get a
// safe minimum date.
this.minDate_ = new Date(loadTimeData.getValue('buildTime'));
this.minDate_.setDate(this.minDate_.getDate() - 1);
// Set the max date to the min date plus 20 years.
this.maxDate_ = new Date(this.minDate_);
this.maxDate_.setYear(this.minDate_.getFullYear() + 20);
// Make sure the ostensible date is within this range.
var now = new Date();
if (now > this.maxDate_)
this.maxDate_ = now;
else if (now < this.minDate_)
this.minDate_ = now;
$('date').setAttribute('min', this.toHtmlValues_(this.minDate_).date);
$('date').setAttribute('max', this.toHtmlValues_(this.maxDate_).date);
this.updateTime_();
// Show the timezone select if we have a timezone ID.
var currentTimezoneId = loadTimeData.getValue('currentTimezoneId');
if (currentTimezoneId) {
this.setTimezone_(currentTimezoneId);
$('timezone-select').addEventListener(
'change', this.onTimezoneChange_.bind(this), false);
$('timezone').hidden = false;
}
this.sizeToFit_();
$('time').addEventListener('blur', this.onTimeBlur_.bind(this), false);
$('date').addEventListener('blur', this.onTimeBlur_.bind(this), false);
$('set-time').addEventListener(
'submit', this.onSubmit_.bind(this), false);
},
/**
* Sets the current timezone.
* @param {string} timezoneId The timezone ID to select.
* @private
*/
setTimezone_: function(timezoneId) {
$('timezone-select').value = timezoneId;
this.updateTime_();
},
/**
* Updates the date/time controls to the current local time.
* Called initially, then called again once a minute.
* @private
*/
updateTime_: function() {
var now = new Date();
// Only update time controls if neither is focused.
if (document.activeElement.id != 'date' &&
document.activeElement.id != 'time') {
var htmlValues = this.toHtmlValues_(now);
this.prevValues_.date = $('date').value = htmlValues.date;
this.prevValues_.time = $('time').value = htmlValues.time;
}
window.clearTimeout(this.timeTimeout_);
// Start timer to update these inputs every minute.
var secondsRemaining = 60 - now.getSeconds();
this.timeTimeout_ = window.setTimeout(this.updateTime_.bind(this),
secondsRemaining * 1000);
},
/**
* Sets the system time from the UI.
* @private
*/
applyTime_: function() {
var date = $('date').valueAsDate;
date.setMilliseconds(date.getMilliseconds() + $('time').valueAsNumber);
// Add timezone offset to get real time.
date.setMinutes(date.getMinutes() + date.getTimezoneOffset());
var seconds = Math.floor(date / 1000);
chrome.send('setTimeInSeconds', [seconds]);
},
/**
* Called when focus is lost on date/time controls.
* @param {Event} e The blur event.
* @private
*/
onTimeBlur_: function(e) {
if (e.target.validity.valid && e.target.value) {
// Make this the new fallback time in case of future invalid input.
this.prevValues_[e.target.id] = e.target.value;
this.applyTime_();
} else {
// Restore previous value.
e.target.value = this.prevValues_[e.target.id];
}
},
/**
* @param {Event} e The change event.
* @private
*/
onTimezoneChange_: function(e) {
chrome.send('setTimezone', [e.currentTarget.value]);
},
/**
* Closes the dialog window.
* @param {Event} e The submit event.
* @private
*/
onSubmit_: function(e) {
e.preventDefault();
chrome.send('dialogClose');
},
/**
* Resizes the window if necessary to show the entire contents.
* @private
*/
sizeToFit_: function() {
// Because of l10n, we should check that the vertical content can fit
// within the window.
if (window.innerHeight < document.body.scrollHeight) {
// Resize window to fit scrollHeight and the title bar.
var newHeight = document.body.scrollHeight +
window.outerHeight - window.innerHeight;
window.resizeTo(window.outerWidth, newHeight);
}
},
/**
* Builds date and time strings suitable for the values of HTML date and
* time elements.
* @param {Date} date The date object to represent.
* @return {{date: string, time: string}} Date is an RFC 3339 formatted date
* and time is an HH:MM formatted time.
* @private
*/
toHtmlValues_: function(date) {
// Get the current time and subtract the timezone offset, so the
// JSON string is in local time.
var localDate = new Date(date);
localDate.setMinutes(date.getMinutes() - date.getTimezoneOffset());
return {date: localDate.toISOString().slice(0, 10),
time: localDate.toISOString().slice(11, 16)};
},
};
TimeSetter.setTimezone = function(timezoneId) {
TimeSetter.getInstance().setTimezone_(timezoneId);
};
TimeSetter.updateTime = function() {
TimeSetter.getInstance().updateTime_();
};
return {
TimeSetter: TimeSetter
};
});
document.addEventListener('DOMContentLoaded', function() {
settime.TimeSetter.getInstance().initialize();
});
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