$ ->
  # This file integrates contenteditable for text attributes.
  # It provides multiline editing support.

  onKey = (event) ->
    cmsField = $(event.currentTarget)
    key = event.keyCode || event.which

    switch key
      when 27 # Esc
        event.stopPropagation()
        cmsField.blur()

  onInput = (event) ->
    cmsField = $(event.currentTarget)
    save(cmsField, false)

  onBlur = (event) ->
    cmsField = $(event.currentTarget)

    save(cmsField, true).done ->
      if cmsField.attr('data-reload') == 'true'
        cmsField.scrivito('reload')

  save = (cmsField, andClose) ->
    cleanUp(cmsField)

    clone = cmsFieldAndPastedContent(cmsField).clone()
    clone.find('div:not(:has(br))').before('\n')
    clone.find('br').replaceWith('\n')
    content = clone.text()
    clone.remove()

    if andClose
      cmsField.text(content)

    # Save only if the content has changed.
    if content != cmsField.scrivito('content')
      cmsField.scrivito('save', content).done ->
        cmsField.trigger('save.scrivito_editors')
    else
      $.Deferred().resolve()

  cleanUp = (cmsField) ->
    siblings = cmsFieldAndPastedContent(cmsField)
    pasted = siblings.not(cmsField)
    if pasted.length > 0
      pasted.remove()
      cmsField.text(siblings.text())

  cmsFieldAndPastedContent = (cmsField) ->
    siblingsBefore = cmsField.data('scrivito_editors_siblings_before_edit')
    siblings = cmsField.siblings()
    needsReset = !siblingsBefore || siblings.filter(siblingsBefore).length < siblingsBefore.length
    if needsReset
      cmsField.data('scrivito_editors_siblings_before_edit', siblings)
    else
      cmsField.siblings().addBack().not(siblingsBefore)

  DOUBLE_CLICK_MS = 300

  initialize = ->
    $(':root').on 'mouseenter', '[data-scrivito-field-type="text"]:not([data-editor]), [data-editor~="text"]', (event) ->
      cmsField = $(@)

      unless cmsField.attr('contenteditable')?
        html = cmsField.html()
        html_nl2br = html.replace(/\n/g, '<br />')
        if html != html_nl2br
          cmsField.html(html_nl2br)

        cmsField
          .attr('contenteditable', true)
          .blur(onBlur)
          .keypress(onKey)
          .keyup(onKey)
          .on('input', onInput)

    $(':root').on 'click', '[data-scrivito-field-type="text"]:not([data-editor]), [data-editor~="text"]', (event) ->
      cmsField = $(@)
      cleanUp(cmsField)

      # Prevent editable link strings from being opened on click, but allow an enforcing double click
      unless event.timeStamp - cmsField.data('scrivito_editors_last_click') < DOUBLE_CLICK_MS
        event.preventDefault()
      cmsField.data('scrivito_editors_last_click', event.timeStamp)

  scrivito.on 'load', ->
    if scrivito.in_editable_view()
      initialize()