{
 "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 ``DateRangeSlider`` widget allows selecting a date range using a slider with two handles.\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",
    "\n",
    "##### Core\n",
    "\n",
    "* **``start``** (datetime): The range's lower bound\n",
    "* **``end``** (datetime): The range's upper bound\n",
    "* **``step``** (int): Step in milliseconds\n",
    "* **``value``** (tuple): Tuple of upper and lower bounds of the selected range expressed as datetime types\n",
    "* **``value_throttled``** (tuple): Tuple of upper and lower bounds of the selected range expressed as datetime types throttled until mouseup\n",
    "\n",
    "##### Display\n",
    "\n",
    "* **``bar_color``** (color): Color of the slider bar as a hexadecimal RGB value\n",
    "* **``callback_policy``** (str, **DEPRECATED**): Policy to determine when slider events are triggered (one of 'continuous', 'throttle', 'mouseup')\n",
    "* **``callback_throttle``** (int): Number of milliseconds to pause between callback calls as the slider is moved\n",
    "* **``direction``** (str): Whether the slider should go from left to right ('ltr') or right to left ('rtl')\n",
    "* **``disabled``** (boolean): Whether the widget is editable\n",
    "* **``name``** (str): The title of the widget\n",
    "* **``orientation``** (str): Whether the slider should be displayed in a 'horizontal' or 'vertical' orientation.\n",
    "* **``tooltips``** (boolean): Whether to display tooltips on the slider handle\n",
    "* **``format``** (str): The datetime format\n",
    "\n",
    "___\n",
    "\n",
    "The slider start and end can be adjusted by dragging the handles and whole range can be shifted by dragging the selected range."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "date_range_slider = pn.widgets.DateRangeSlider(\n",
    "    name='Date Range Slider',\n",
    "    start=dt.datetime(2017, 1, 1), end=dt.datetime(2019, 1, 1),\n",
    "    value=(dt.datetime(2017, 1, 1), dt.datetime(2018, 1, 10)),\n",
    "    step=24*3600*2*1000\n",
    ")\n",
    "\n",
    "date_range_slider"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "``DateRangeSlider.value`` returns a tuple of datetime values that can be read out and set like other widgets:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "date_range_slider.value"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Controls\n",
    "\n",
    "The `DateRangeSlider` 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(date_range_slider.controls(jslink=True), date_range_slider)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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