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const defaultTimezone = 'UTC';
export const formatUtcOffset = offset => {
const parsed = parseInt(offset, 10);
if (Number.isNaN(parsed) || parsed === 0) {
return `0`;
}
const prefix = offset > 0 ? '+' : '-';
return `${prefix} ${Math.abs(offset / 3600)}`;
};
export const formatTimezone = item => `[UTC ${formatUtcOffset(item.offset)}] ${item.name}`;
const defaults = {
$inputEl: null,
$dropdownEl: null,
onSelectTimezone: null,
};
export default class TimezoneDropdown {
constructor({ $dropdownEl, $inputEl, onSelectTimezone } = defaults) {
this.$dropdown = $dropdownEl;
this.$dropdownToggle = this.$dropdown.find('.dropdown-toggle-text');
this.$input = $inputEl;
this.timezoneData = this.$dropdown.data('data');
this.initDefaultTimezone();
this.initDropdown();
this.onSelectTimezone = onSelectTimezone;
}
initDropdown() {
this.$dropdown.glDropdown({
data: this.timezoneData,
filterable: true,
selectable: true,
toggleLabel: item => item.name,
search: {
fields: ['name'],
},
clicked: cfg => this.updateInputValue(cfg),
text: item => formatTimezone(item),
});
this.setDropdownToggle();
}
initDefaultTimezone() {
const initialValue = this.$input.val();
if (!initialValue) {
this.$input.val(defaultTimezone);
}
}
setDropdownToggle() {
const initialValue = this.$input.val();
this.$dropdownToggle.text(initialValue);
}
updateInputValue({ selectedObj, e }) {
e.preventDefault();
this.$input.val(selectedObj.identifier);
if (this.onSelectTimezone) {
this.onSelectTimezone({ selectedObj, e });
}
}
}
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