class BlockquoteButton extends Button

  name: 'blockquote'

  icon: 'quote-left'

  htmlTag: 'blockquote'

  disableTag: 'pre, table'

  command: ->
    $rootNodes = @editor.selection.rootNodes()
    $rootNodes = $rootNodes.filter (i, node) ->
      !$(node).parent().is('blockquote')
    @editor.selection.save()

    nodeCache = []

    clearCache = =>
      if nodeCache.length > 0
        $("<#{@htmlTag}/>")
          .insertBefore(nodeCache[0])
          .append(nodeCache)
        nodeCache.length = 0

    $rootNodes.each (i, node) =>
      $node = $ node
      return unless $node.parent().is(@editor.body)

      if $node.is @htmlTag
        clearCache()
        $node.children().unwrap()
      else if $node.is(@disableTag) or @editor.util.isDecoratedNode($node)
        clearCache()
      else
        nodeCache.push node

    clearCache()
    @editor.selection.restore()
    @editor.trigger 'valuechanged'

Simditor.Toolbar.addButton BlockquoteButton