自定义tinymce 4.0.5 styleselect工具栏菜单

我正在尝试自定义默认值styleselect工具栏菜单，这样我就可以向其中添加自定义菜单元素。这个想法是将字体大小设置为styleselect子菜单：

我初始化了一个TinyMCE 4.0.5通过以下方式：

tinymce.init(
{
    language_url : '/webobbywebapp/js/tiny_mce/language/es.js',
    selector:'textarea',
    plugins: "image, link, print",
    toolbar: "styleselect | undo redo | removeformat | bold italic underline |  aligncenter alignjustify  | bullist numlist outdent indent | link | print | fontselect fontsizeselect",
    menubar: false,
    statusbar: true,
    resize: true
});

由于我无法找到如何自定义默认样式选择菜单，因此我还尝试创建一个完整的新菜单，在其中可以添加字体大小控制。但我不想显示任何工具栏，我想要一个菜单​​栏。

编辑：现在我正在尝试使用以下代码修改 styleselect 菜单，但 fontselect 和 fontsizeselect 显示为禁用

,style_formats:
[{
    title: "Headers_",
    items: [{title: "Header 1",format: "h1"}, {title: "Header 2",format: "h2"}, {title: "Header 3",format: "h3"}, {title: "Header 4",format: "h4"}, {title: "Header 5",format: "h5"}, {title: "Header 6",format: "h6"}]
}, 
            {title: "_Inline",items: [{title: "Bold",icon: "bold",format: "bold"}, {title: "Italic",icon: "italic",format: "italic"}, 
            {title: "_Underline",icon: "underline",format: "underline"}, {title: "Strikethrough",icon: "strikethrough",format: "strikethrough"}, {title: "Superscript",icon: "superscript",format: "superscript"}, {title: "Subscript",icon: "subscript",format: "subscript"}, {title: "Code",icon: "code",format: "code"}]}, 
            {title: "_Blocks",items: [{title: "Paragraph",format: "p"}, {title: "Blockquote",format: "blockquote"}, {title: "Div",format: "div"}, {title: "Pre",format: "pre"}]}, 
            {title: "_Alignment",items: [{title: "Left",icon: "alignleft",format: "alignleft"}, {title: "Center",icon: "aligncenter",format: "aligncenter"}, {title: "Right",icon: "alignright",format: "alignright"}, {title: "Justify",icon: "alignjustify",format: "alignjustify"}]}, 
            {title: "Classes", items: 'fontsizeselect'},
    {title: "dddClasses", items: 'fontselect'
}]
  

从版本 4.0.13 开始，您可以在 init 期间使用一个新属性，称为样式格式合并。将此属性设置为 true，它将把您的样式连接到默认集。

tinymce.init({
    style_formats_merge: true,
    style_formats: [
        {
            title: 'Line Height',
            items: [
                { title: 'Normal Line Height', inline: 'span', styles: { "line-height": '100%' } },
                { title: 'Line Height + 10%', inline: 'span', styles: { "line-height": '110%' } },
                { title: 'Line Height + 50%', inline: 'span', styles: { "line-height": '150%' } },
                { title: 'Line Height + 100%', inline: 'span', styles: { "line-height": '200%' } }
            ]
        }
    ]
});