webpack-bootstrap-ui-kit/src/js_old/_components/_ui.sidebar.js

'use strict'

// import StickySidebar from 'sticky-sidebar/src/sticky-sidebar';
import $ from 'jquery'
import Events from '../_events'

const SidebarUI = (($) => {
  const D = document
  const W = window
  const $Body = $('body')
  const NAME = 'SidebarUI'
  const CLASSNAME = `js${NAME}`
  const CONTENTHOLDER = 'content-holder'
  const INNERWRAPPER = `${CLASSNAME}__inner`

  class SidebarUI {
    static init () {
      const ui = this
      ui.dispose()

      if (!$(`.${CLASSNAME}`).length) {
        return
      }

      console.log(`${NAME}: init ...`)
      // const fontSize = parseInt($Body.css('font-size'));
      const fontSize = 0
      const contentElement = $(`.${CONTENTHOLDER}`)[0]

      // $(`.${CLASSNAME}`).wrapInner(`<div class="${INNERWRAPPER}"></div>`);
      const $el = $(`.${CLASSNAME}`)
      const $innerWrapper = $(`.${INNERWRAPPER}`)

      /* const sticky = new StickySidebar(`.${CLASSNAME}`, {
        topSpacing: fontSize,
        bottomSpacing: fontSize,
        containerSelector: CONTENTHOLDER,
        innerWrapperSelector: INNERWRAPPER,
      }); */

      $el.addClass(`${CLASSNAME}-active`)

      $Body.on(`${Events.SCROLL} ${Events.RESIZE}`, (e) => {
        const contentOffset = parseInt(contentElement.offsetTop) + fontSize
        const contentOffsetHeight =
          parseInt(contentElement.offsetHeight) - fontSize
        const sidebarWidth = $el[0].offsetWidth

        const scrollPos = parseInt($Body.scrollTop())

        // normal pos
        if (contentOffset >= scrollPos) {
          $innerWrapper.attr('style', '')
        } else if (
          scrollPos >=
          contentOffset + contentOffsetHeight - $innerWrapper[0].offsetHeight
        ) {
          // bottom pos
          $innerWrapper.attr('style', `position:absolute;bottom:${fontSize}px`)
        } else {
          // scrolled pos
          $innerWrapper.attr(
            'style',
            `position:fixed;top:${fontSize}px;width:${sidebarWidth}px`
          )
        }
      })
    }

    static dispose () {
      console.log(`${NAME}: dispose`)
    }
  }

  $(W).on(`${NAME}.init ${Events.LODEDANDREADY}`, () => {
    SidebarUI.init()
  })

  W.SidebarUI = new SidebarUI()

  return SidebarUI
})($)

export default SidebarUI