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我正在尝试使用 Medium Editor ( https://github.com/yabwe/medium-editor ) 构建一个协作文本编辑器。我想要做的是在我的编辑器中实现这个功能:

https://github.com/convergencelabs/html-text-collab-ext

我并不是真正的 Javascript 专家,我面临一些问题。到目前为止,我创建了一个 Medium Editor 扩展,它监听外部用户的输入,输入外部更改的插入符号位置(使用编辑器的 exportSelection() 功能)。我现在要做的是在进行更改的位置插入假插入符号(类似于在 html-text-collab-ext 上看到的插入符号),但当然不会触及真正的插入符号。

我的代码:

    export const CollabAnchorPreview = MediumEditor.Extension.extend({
        name: 'collab-anchor-preview',

        init: function () {
            this.anchorPreview = this.createPreview();
            this.getEditorOption('elementsContainer').appendChild(this.anchorPreview);

            this.subscribe('externalWriting', this.showPreview.bind(this));
        },

        createPreview: function () {
            var el = this.document.createElement('div');

            el.id = 'medium-editor-anchor-preview-' + this.getEditorId();
            el.className = 'medium-editor-anchor-preview';
            el.innerHTML = this.getTemplate();

            return el;
        },

        getTemplate: function () {
            return '<div class="medium-editor-toolbar-anchor-preview" id="medium-editor-toolbar-anchor-preview">' +
                '    <a class="medium-editor-toolbar-anchor-preview-inner"></a>' +
                '</div>';
        },

        destroy: function () {
            if (this.anchorPreview) {
                if (this.anchorPreview.parentNode) {
                    this.anchorPreview.parentNode.removeChild(this.anchorPreview);
                }
                delete this.anchorPreview;
            }
        },

        hidePreview: function () {
            if (this.anchorPreview) {
                this.anchorPreview.classList.remove('medium-editor-anchor-preview-active');
            }
            this.activeAnchor = null;
        },

        showPreview: function(external_caret_position, editable) {
            console.log('Event');
            console.log(external_caret_position);
            
            // Here I don't know well how to go ahead.

非常感谢您。

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