'use strict'

goog.provide('Smalruby.FieldCharacter')

goog.require('Blockly.FieldDropdown')


Smalruby.FieldCharacter = (character, opt_changeHandler) ->
  if opt_changeHandler
    changeHandler = (value) =>
      retVal = Smalruby.FieldCharacter.dropdownChange.call(@, value)
      if retVal
        newVal = retVal
      else
        retVal = @getValue()
      opt_changeHandler.call(@, newVal)
      retVal
  else
    changeHandler = Smalruby.FieldCharacter.dropdownChange

  Smalruby.FieldCharacter.superClass_.constructor
    .call(@, Smalruby.FieldCharacter.dropdownCreate, changeHandler)

  charSet = Smalruby.Collections.CharacterSet
  charSet.on('add', @onCharacterSetAdd_, @)
  charSet.on('remove', @onCharacterSetRemove_, @)
  charSet.on('reset', @onCharacterSetReset_, @)

  @character = Smalruby.FieldCharacter.NullCharacter

  unless character
    character = Smalruby.Collections.CharacterSet.first()
  @setCharacter(character)

goog.inherits(Smalruby.FieldCharacter, Blockly.FieldDropdown)

Smalruby.FieldCharacter.prototype.setCharacter = (character) ->
  return if character == @character

  @character.unlink(@)
  @character.off('change:name', @onCharacterChangeName_, @)
  @character = if character then character else Smalruby.FieldCharacter.NullCharacter
  @character.link(@)
  @character.on('change:name', @onCharacterChangeName_, @)

  @setValue(@character.get('name'))

Smalruby.FieldCharacter.prototype.onCharacterSetAdd_ = (model, collection, options) ->
  if @character == Smalruby.FieldCharacter.NullCharacter
    @setCharacter(model)

Smalruby.FieldCharacter.prototype.onCharacterSetRemove_ = (model, collection, options) ->
  if model == @character
    @setCharacter()

Smalruby.FieldCharacter.prototype.onCharacterSetReset_ = (collection, options) ->
  if @character == Smalruby.FieldCharacter.NullCharacter
    @setCharacter(collection.first())
  else
    @setCharacter(collection.findWhere({ name: @getValue() }))

Smalruby.FieldCharacter.prototype.onCharacterChangeName_ = (model, value, options) ->
  @setValue(value)

Smalruby.FieldCharacter.prototype.clone = ->
  new Smalruby.FieldCharacter(@character, @changeHandler_)

Smalruby.FieldCharacter.prototype.dispose = ->
  charSet = Smalruby.Collections.CharacterSet
  charSet.off('add', @onCharacterSetAdd_, @)
  charSet.off('remove', @onCharacterSetRemove_, @)
  charSet.off('reset', @onCharacterSetReset_, @)
  @setCharacter()

  Blockly.FieldDropdown.prototype.dispose.call(@)

Smalruby.FieldCharacter.prototype.setText = (value) ->
  # HACK: XMLをロードしたときにキャラクターとリンクさせる
  unless @character
    @character = Smalruby.FieldCharacter.NullCharacter
    charSet = Smalruby.Collections.CharacterSet
    @setCharacter(charSet.findWhere({ name: value }))
  Blockly.FieldDropdown.prototype.setText.call(@, value)

Smalruby.FieldCharacter.dropdownCreate = ->
  charSet = Smalruby.Collections.CharacterSet
  if charSet.length > 0
    Smalruby.Collections.CharacterSet.map (c) ->
      n = c.get('name')
      [n, n]
  else
    [[Smalruby.FieldCharacter.NullCharacter.get('name'), '']]

Smalruby.FieldCharacter.dropdownChange = (value) ->
  c = Smalruby.Collections.CharacterSet.findWhere({ name: value })
  if c
    @setCharacter(c)
    value
  else
    null

Smalruby.FieldCharacter.NullCharacter =
  get: (name) ->
    'キャラクターなし'
  on: -> $.noop
  off: -> $.noop
  link: -> $.noop
  unlink: -> $.noop

Blockly.Block.prototype.getCharacterFieldValue = (name = 'CHAR') ->
  char = @getFieldValue(name)

  if Blockly.Ruby.c()
    c = Smalruby.Collections.CharacterSet.findWhere({ name: char })
    Blockly.Ruby.defineCharacter(c)

  char