constructor() {
      super();
      this._prevDelimiter = null;
    }
@class

<h3 class="comment-api-title">Overview</h3>
The DateRangePicker enables the users to enter a localized date range using touch, mouse, keyboard input, or by selecting a date range in the calendar.

<h3>Usage</h3>
The user can enter a date by:
Using the calendar that opens in a popup or typing it in directly in the input field (not available for mobile devices).
For the <code>ui5-daterange-picker</code>
<h3>ES6 Module Import</h3>

<code>import "@ui5/webcomponents/dist/DateRangePicker.js";</code>

<h3>Keyboard Handling</h3>
The <code>ui5-daterange-picker</code> provides advanced keyboard handling.
<br>

When the <code>ui5-daterange-picker</code> input field is focused the user can
increment or decrement respectively the range start or end date, depending on where the cursor is.
The following shortcuts are available:
<br>
<ul>
<li>[PAGEDOWN] - Decrements the corresponding day of the month by one</li>
<li>[SHIFT] + [PAGEDOWN] - Decrements the corresponding month by one</li>
<li>[SHIFT] + [CTRL] + [PAGEDOWN] - Decrements the corresponding year by one</li>
<li>[PAGEUP] - Increments the corresponding day of the month by one</li>
<li>[SHIFT] + [PAGEUP] - Increments the corresponding month by one</li>
<li>[SHIFT] + [CTRL] + [PAGEUP] - Increments the corresponding year by one</li>
</ul>

@constructor
@author SAP SE
@alias sap.ui.webc.main.DateRangePicker
@extends sap.ui.webc.main.DatePicker
@tagname ui5-daterange-picker
@since 1.0.0-rc.8
@public