ldx-widgets/src/components/select_pvr.coffee

widgets

React = require 'react'
_ = require 'lodash'

animationMixin = require '../mixins/animation_mixin'

Pvr = React.createFactory(require './pvr')
SelectPvrOption = React.createFactory(require './select_pvr_option')

{div} = React.DOM

###
Select Popover Props

@props.options
  array of objects containing at minimum a label and value attribute
  optionally a subLabel property can be passed

@props.defaultSelected
  value of the option selected by default

@props.close - func that closes the popover

@props.styleMixin
  object containing any style properties to mixin with and/or overrride the defaults
  note that width height are passed separately so they can have defaults and auto settings
  passing widt/height in this object could cause issues

@props.onChange
  method to call when the non selected option is clicked

@props.hideSelected
  when on, the defaultSelected option will be removed from the list

@props.optionHeight
  the height of the options in the list

@props.headerTitle
  optional title String for popover header

@props.headerClass
  optional class for popover header

@props.noWrapOptions
  option to turn off text wrapping on the menu's options

@props.maxHeight
  the maximum height the popover should be. used to set height on the pvr if this is 
  lower than the computed height.

@props.pvrProps
  properties germane to PVR wrapper: width, height, anchor, hAdjust, vAdjust, direction

@props.canDeselect
  option to de-select the selected option - will allow us call handle click for the selected option

###

SelectPvr = React.createClass
  
  displayName: 'SelectPvr'

  mixins: [animationMixin]

  enterStateStart:
    scale: .9
  enterStateEnd:
    scale: 1
  enterEasing: 'easeOutElastic'
  enterDuration: 600

  propTypes:
    close: React.PropTypes.func.isRequired   

  getDefaultProps: ->
    {
      options: []
      styleMixin: {}
      headerTitle: null
      headerClass: ''
      onChange: ->
      hideSelected: no
      optionHeight: 36
      noWrapOptions: no
      pvrProps: {}
      canDeselect: no
    }

  render: ->
    {styleMixin, options, hideSelected, optionHeight, headerTitle, headerClass, noWrapOptions, disabled, className, maxHeight, close, canDeselect} = @props
    {selectedOption, scale} = @state
    style = {}

    pvrProps = _.cloneDeep @props.pvrProps

    @hasHeader = headerTitle?

    height = options.length * optionHeight + (options.length - 1) - (if hideSelected then optionHeight else 0) if height is 'auto'
    unless pvrProps.height?
      pvrProps.height = options.length * optionHeight + (options.length - 1) - (if hideSelected then optionHeight else 0) 
    if @hasHeader
      pvrProps.height += 34    

    if maxHeight? and pvrProps.height > maxHeight
      pvrProps.height = maxHeight

    _.assign style, styleMixin

    style.height = pvrProps.height

    if pvrProps.width
      style.width = pvrProps.width

    optionEls = []
    for option in options
      optionsEqual = (->
        if typeof selectedOption is 'string' then selectedOption is option.label
        else if typeof selectedOption is 'object' then _.isEqual(selectedOption, option)
      )()

      continue if hideSelected and optionsEqual
      
      optionEls.push SelectPvrOption {
        hasSubLabel: option.subLabel?
        option: option
        optionHeight: optionHeight
        key: option.id or option.value
        isSelected: optionsEqual
        canDeselect: canDeselect
        handleClick: @handleClick
        noWrapOptions: noWrapOptions
        disabled: option.disabled
        className: option.className
      }

    pvrProps.scale = scale
    pvrProps.close = close

    pvrProps.element = div {
      key: 'select-pvr'
      className: 'select-pvr'
      style: style
    }, [
        if @hasHeader
          div {
            key: 'header'
            className: "header plain-pvr-content-item #{headerClass}"
          }, headerTitle
        
        div {
          key: 'inner-rows'
        }, optionEls
      ]

    Pvr(pvrProps)


  getInitialState: ->
    {
      selectedOption: @props.defaultSelected or null
    }

  handleClick: (option) ->
    @setState
      selectedOption: option

    @props.onChange option
    
    @props.close()

    
module.exports = SelectPvr