React = require 'react'
Spinner = React.createFactory(require './spinner')

InputMixin = require '../mixins/input_mixin'

{div, button, label, textarea} = React.DOM

###
Textarea Props 

@props.value - REQUIRED - String
  The value of the textarea
  w/ out this props, the textarea will not work

@props.onChange - REQUIRED 
  method that will change the value of the textarea prop
  gets passed a single param that is the new value of the textarea
  w/ out this method, the textarea will not update

@props.className - OPTIONAL - string - default 'text-textarea'
  optional class to be added the textarea element itself

@props.inputTextClass - OPTIONAL - string 
  optional class to be added the input element itself when using the gridInputForm

@props.id - OPTIONAL - string - default null
  optional id to be added the textarea element itself

@props.placeholder - OPTIONAL - string - default null
  optional placeholder text for the textarea

@props.wrapperClass - OPTIONAL - string default null
  class to be added to the wrapper div

@props.wrapperLabel - OPTIONAL - default null
  text for wrapping label element

@props.loading - OPTIONAL - Boolean
  indicator to determine that the textarea is loading a value from the server

@props.showClear - OPTIONAL - Boolean
  indicator to determine whether or not to show the clear "X" button 

@props.tabIndex - OPTIONAL - int - default null
  tab index for the textarea

@props.maxLength - OPTIONAL - int - default null
  max characters that can be entered in the textarea

@props.onKeyDown/onKeyPress/onKeyUp/onEnterKey/onBlur/onFocus
  optional handlers for various events

@props.disabled - OPTIONAL - Boolean - default no
  disabled state of the textarea

@props.validation - OPTIONAL - Function
  a method that takes the value and returns an arry of validation objects
  always return an empty array for a valid value
  see the validation store for more documentation on validation objects

@props.isInPopover - OPTIONAL - default no
  set this to yes if the form is inside a popover or modal, forces the
  validation to display above the popover/modal layer
  Inconsequential if validation is not being used

@props.delayedActionOnChange - OPTIONAL - Object
  Takes action and interval parameters, will fire the action after the set interval everytime the data changes

@props.textTransform - OPTIONAL - Function 
  runs the value through a transform method that will change the textarea before returning via getValue()

@props.focusOnMount - OPTIONAL - Boolean 
  Focuses the textarea once mounted

@props.rows - OPTIONAL - Number string - default 4 
  Height of textarea

@props.cols - OPTIONAL - Number string - default 50 
  Width of textarea
###

Textarea = React.createClass
  
  displayName: 'Textarea'

  mixins: [InputMixin]

  contextTypes:
    clearValidationError: React.PropTypes.func
    addValidationError: React.PropTypes.func
    getValidationStatus: React.PropTypes.func
    toggleValidationError: React.PropTypes.func

  propTypes:
    className: React.PropTypes.string
    textTransform: React.PropTypes.func
    focusOnMount: React.PropTypes.bool
    delayedActionOnChange: React.PropTypes.object
    tabIndex: React.PropTypes.number
    maxLength: React.PropTypes.number
    disabled: React.PropTypes.bool
    onChange: React.PropTypes.func
    onKeyDown: React.PropTypes.func
    onKeyUp: React.PropTypes.func
    onKeyPress: React.PropTypes.func
    style: React.PropTypes.object
    rows: React.PropTypes.string
    cols: React.PropTypes.string
    autoComplete: React.PropTypes.oneOfType [
      React.PropTypes.string
      React.PropTypes.bool
    ]
    placeholder: React.PropTypes.oneOfType [
      React.PropTypes.string
      React.PropTypes.number
    ]
    value: React.PropTypes.oneOfType([
      React.PropTypes.string
      React.PropTypes.number
    ]).isRequired
    id: React.PropTypes.oneOfType [
      React.PropTypes.string
      React.PropTypes.number
    ]

  getDefaultProps: -> 
    className: 'textarea'
    id: null
    placeholder: ''
    wrapperClass: null
    wrapperLabel: null
    loading: no
    showClear: no
    tabIndex: null
    maxLength: null
    onKeyDown: null
    onKeyPress: null
    onFocus: null
    onBlur: null
    onKeyUp: null
    onEnterKey: null
    onChange: null
    disabled: no
    autoComplete: no
    validation: off
    isInPopover: no
    delayedActionOnChange: null
    spellCheck: false
    style: null
    focusOnMount: false
    rows: "4"
    cols: "50"

  render: ->
    {value, placeholder, tabIndex, className, maxLength, loading, showClear, onKeyDown, onKeyPress, onBlur, onFocus, wrapperClass, wrapperLabel, id, disabled, validation, autoComplete, spellCheck, style, focusOnMount, rows, cols} = @props
    {error, forceShowAllErrors} = @context.getValidationStatus(@inputId)
    {valueHasChanged} = @state
    isValid = not error?

    outerClass = 'field-wrap'
    outerClass += " #{wrapperClass}" if wrapperClass?
    outerClass += ' invalid' if not isValid and (valueHasChanged or forceShowAllErrors)

    textareaClass = className if className?
    textareaClass += ' loading-spinner' if loading

    errorButtonClass = 'field-errors-show'
    errorButtonClass += ' is-hidden' if loading

    # Autocomplete
    autoComplete = switch typeof autoComplete 
      when 'string' then autoComplete
      when 'boolean'
        if autoComplete then 'on' else 'off'

    textArea = textarea {
      key: 'textArea'
      ref: 'textarea'
      id: id
      className: textareaClass
      value: value
      placeholder: placeholder
      maxLength: maxLength
      disabled: disabled
      tabIndex: tabIndex
      onChange: @handleChange
      onKeyUp: @handleKeyUp
      onKeyDown: onKeyDown
      onKeyPress: onKeyPress
      onBlur: onBlur
      onFocus: onFocus
      autoComplete: autoComplete
      spellCheck: spellCheck
      rows
      cols
    }

    # Add a wrapper label element if label prop is present
    if wrapperLabel
      textArea = label {
        key: 'textAreaLabel'
      }, [wrapperLabel, textArea]

    div {
      className: "#{outerClass}"
      style: style
    }, [
      textArea
      div({
          key: 'input-spinner'
          className: 'input-spinner'
        }, 
          Spinner {
            length: 3
          }
      ) if loading
      button {
        className: 'search-clear'
        title: 'Clear Search'
        key: 'searchClearBtn'
        onClick: @clear
        tabIndex: -1
      } if value?.length > 0 and showClear
      div {
        className: errorButtonClass
        key: 'textAreaErrorsShow'
        ref: 'errorAnchor'
        onMouseOver: @handleErrorMouseOver
        onMouseOut: @handleErrorMouseOut
      }
    ]


module.exports = Textarea