{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import datetime as dt\n",
    "import panel as pn\n",
    "\n",
    "pn.extension()"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The ``DatetimeInput`` widget allows entering a datetime value as text and parsing it using a pre-defined formatter. \n",
    "\n",
    "For more information about listening to widget events and laying out widgets refer to the [widgets user guide](../../user_guide/Widgets.ipynb). Alternatively you can learn how to build GUIs by declaring parameters independently of any specific widgets in the [param user guide](../../user_guide/Param.ipynb). To express interactivity entirely using Javascript without the need for a Python server take a look at the [links user guide](../../user_guide/Param.ipynb).\n",
    "\n",
    "#### Parameters:\n",
    "\n",
    "For layout and styling related parameters see the [customization user guide](../../user_guide/Customization.ipynb).\n",
    "\n",
    "##### Core\n",
    "\n",
    "* **``start``** (datetime): Lower bound\n",
    "* **``end``** (datetime): Upper bound\n",
    "* **``value``** (datetime): Parsed datetime value\n",
    "\n",
    "##### Display\n",
    "\n",
    "* **``disabled``** (boolean): Whether the widget is editable\n",
    "* **``format``** (str): Datetime formatting string that determines how the value is formatted and parsed (``default='%Y-%m-%d %H:%M:%S'``)\n",
    "* **``name``** (str): The title of the widget\n",
    "\n",
    "___"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "The datetime parser uses the defined ``format`` to validate the input value, if the entered text is not a valid datetime a warning will be shown in the title as \"`(invalid)`\":"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "dt_input = pn.widgets.DatetimeInput(name='Datetime Input', value=dt.datetime(2019, 2, 8))\n",
    "\n",
    "dt_input"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "``DatetimeInput.value`` returns a datetime object and can be accessed and set like other widgets:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "dt_input.value"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Controls\n",
    "\n",
    "The `DateTimeInput` widget exposes a number of options which can be changed from both Python and Javascript. Try out the effect of these parameters interactively:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "pn.Row(dt_input.controls(jslink=True), dt_input)"
   ]
  }
 ],
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  "language_info": {
   "name": "python",
   "pygments_lexer": "ipython3"
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}