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TimePicker.js
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TimePicker.js
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/**
* Provides a Moonstone-themed time selection component.
*
* @example
* <TimePicker title="Open me" value={new Date()}></TimePicker>
*
* @module moonstone/TimePicker
* @exports TimePicker
* @exports TimePickerBase
*/
import Pure from '@enact/ui/internal/Pure';
import DateFactory from 'ilib/lib/DateFactory';
import DateFmt from 'ilib/lib/DateFmt';
import LocaleInfo from 'ilib/lib/LocaleInfo';
import DateTimeDecorator from '../internal/DateTimeDecorator';
import Skinnable from '../Skinnable';
import TimePickerBase from './TimePickerBase';
/*
* Converts a string representation of time into minutes
*
* @param {String} time Time in the format `HH:mm`
*
* @returns {Number} Time in minute
* @private
*/
const toMinutes = (time) => {
const colon = time.indexOf(':');
const hour = parseInt(time.substring(0, colon));
const minute = parseInt(time.substring(colon + 1));
return hour * 60 + minute;
};
/*
* Converts the `start` and `end` string representations (e.g. '12:00') into a numerical
* representation.
*
* @param {Object} options Time options
* @param {String} options.start Start time of meridiem
* @param {String} options.end End time of meridiem
*
* @returns {Object} Contains start and end time in minutes
* @private
*/
const calcMeridiemRange = ({start, end}) => ({
start: toMinutes(start),
end: toMinutes(end)
});
/*
* Finds the index of the meridiem which contains `time`
*
* @param {Number} time Time in minutes
* @param {Object[]} meridiems Array of meridiems with `start` and `end` members in minutes
*
* @returns {Number} Index of `time` in `meridiems`
* @private
*/
const indexOfMeridiem = (time, meridiems) => {
const minutes = time.getHours() * 60 + time.getMinutes();
for (let i = 0; i < meridiems.length; i++) {
const m = meridiems[i];
if (minutes >= m.start && minutes <= m.end) {
return i;
}
}
return -1;
};
const dateTimeConfig = {
customProps: function (i18n, value, {meridiemLabel}) {
let values = {
// i18n props
meridiems: i18n.meridiemLabels,
meridiemLabel,
// date components
hour: 12,
minute: 0,
meridiem: 0
};
if (i18n.meridiemEnabled && meridiemLabel == null) {
if (values.meridiems.length > 2) {
values.meridiemLabel = `${values.meridiems[0]} / ${values.meridiems[1]} ...`;
} else {
values.meridiemLabel = values.meridiems.join(' / ');
}
}
if (value) {
if (i18n.meridiemEnabled) {
values.meridiem = indexOfMeridiem(value, i18n.meridiemRanges);
}
values.hour = value.getHours();
values.minute = value.getMinutes();
}
return values;
},
defaultOrder: ['h', 'm', 'a'],
handlers: {
onChangeHour: function (ev, value) {
const currentTime = DateFactory(value).getTimeExtended();
const currentHour = value.hour;
value.hour = ev.value;
// In the case of navigating onto the skipped hour of DST, ilib will return the same
// value so we skip that hour and update the value again.
const newTime = DateFactory(value).getTimeExtended();
if (newTime === currentTime) {
value.hour = ev.value * 2 - currentHour;
}
return value;
},
onChangeMinute: function (ev, value) {
value.minute = ev.value;
return value;
},
onChangeMeridiem: function (ev, value, i18n) {
const {meridiemRanges} = i18n;
const meridiem = meridiemRanges[ev.value];
if (meridiemRanges.length === 2) {
// In the common case of 2 meridiems, we'll offset hours by 12 so that picker stays
// the same.
value.hour = (value.getHours() + 12) % 24;
} else {
// In the rarer case of > 2 meridiems (e.g. am-ET), try to set hours only first
const hours = Math.floor(meridiem.start / 60);
value.hour = hours;
// but check if it is still out of bounds and update the minutes as well
const minutes = hours * 60 + value.getMinutes();
if (minutes > meridiem.end) {
value.minute = meridiem.end % 60;
} else if (minutes < meridiem.start) {
value.minute = meridiem.start % 60;
}
}
return value;
}
},
i18n: function () {
// Filters used to extract the order of pickers from the ilib template
const includeMeridiem = /([khma])(?!\1)/ig;
const excludeMeridiem = /([khm])(?!\1)/ig;
// Label formatter
const formatter = new DateFmt({
type: 'time',
useNative: false,
timezone: 'local',
length: 'full',
date: 'dmwy'
});
// Meridiem localization
const merFormatter = new DateFmt({
template: 'a',
useNative: false,
timezone: 'local'
});
const meridiems = merFormatter.getMeridiemsRange();
const meridiemRanges = meridiems.map(calcMeridiemRange);
const meridiemLabels = meridiems.map(obj => obj.name);
// Picker ordering
const li = new LocaleInfo();
const clockPref = li.getClock();
const meridiemEnabled = clockPref === '12';
const filter = meridiemEnabled ? includeMeridiem : excludeMeridiem;
const order = formatter.getTemplate()
.replace(/'.*?'/g, '')
.match(filter)
.map(s => s[0].toLowerCase());
return {
formatter,
meridiemEnabled,
meridiemLabels,
meridiemRanges,
order
};
}
};
/**
* A component that allows displaying or selecting time.
*
* Set the [value]{@link moonstone/TimePicker.TimePicker#value} property to a standard JavaScript
* [Date] {@link /docs/developer-guide/glossary/#date} object to initialize the picker.
*
* By default, `TimePicker` maintains the state of its `value` property. Supply the
* `defaultValue` property to control its initial value. If you wish to directly control updates
* to the component, supply a value to `value` at creation time and update it in response to
* `onChange` events.
*
* It is expandable and it maintains its open/closed state by default. `defaultOpen` can be used to
* set the initial state. For the direct control of its open/closed state, supply a value for
* `open` at creation time and update its value in response to `onClose`/`onOpen` events.
*
* @class TimePicker
* @memberof moonstone/TimePicker
* @mixes ui/Toggleable.Toggleable
* @mixes ui/RadioDecorator.RadioDecorator
* @mixes ui/Changeable.Changeable
* @ui
* @public
*/
/**
* Default value
*
* @name defaultValue
* @memberof moonstone/TimePicker.TimePicker.prototype
* @type {Number}
* @public
*/
const TimePicker = Pure(
Skinnable(
DateTimeDecorator(
dateTimeConfig,
TimePickerBase
)
)
);
/**
* The primary text of the item.
*
* @name title
* @memberof moonstone/TimePicker.TimePicker
* @instance
* @type {String}
* @required
* @public
*/
/**
* Omits the labels below the pickers.
*
* @name noLabels
* @memberof moonstone/TimePicker.TimePicker
* @instance
* @type {Boolean}
* @public
*/
/**
* Called when a condition occurs which should cause the expandable to close.
*
* @name onClose
* @memberof moonstone/TimePicker.TimePicker
* @instance
* @type {Function}
* @public
*/
/**
* The selected date.
*
* @name value
* @memberof moonstone/TimePicker.TimePicker
* @instance
* @type {Date}
* @public
*/
export default TimePicker;
export {TimePicker, TimePickerBase};