docs: function ForeColor(editor) {
      this.editor = editor
      this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-pencil2"></i></div>')
      this.type = 'droplist'
  
      // 获取配置的颜色
      const config = editor.config
      const colors = config.colors || []
  
      // 当前是否 active 状态
      this._active = false
  
      // 初始化 droplist
      this.droplist = new DropList(this, {
          width: 120,
          $title: $('<p>文字颜色</p>'),
          type: 'inline-block', // droplist 内容以 block 形式展示
          list: colors.map(color => {
              return { $elem: $(`<i style="color:${color};" class="w-e-icon-pencil2"></i>`), value: color }
          }),
          onClick: (value) => {
              // 注意 this 是指向当前的 ForeColor 对象
              this._command(value)
          }
      })
  }