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Third party Integration

The RichTextEditor can be integrated with third-party to suite the application scenario.

Code-Mirror Integration

RichTextEditor comes with a basic HTML source editor through view-source property. Code mirror plugin can be used to highlight the syntax of HTML. CodeMirror plugin for RichTextEditor makes editing of HTML source code with a pleasant experience.

Import necessary CSS and JS files of CodeMirror to the HTML page.

Required JS files of code mirror.

 <script src="scripts/CodeMirror/codemirror.js" type="text/javascript"></script>
 <script src="scripts/CodeMirror/javascript.js" type="text/javascript"></script>
 <script src="scripts/CodeMirror/css.js" type="text/javascript"></script>
 <script src="scripts/CodeMirror/htmlmixed.js" type="text/javascript"></script>

Required CSS file of code mirror.

 <link href="scripts/CodeMirror/codemirror.min.css" rel="stylesheet" />

Add a custom icon for HTML source editor in the toolbar of RichTextEditor using template option of ToolbarSettings and define the code mirror plugins, and then pass the RichTextEditor content as argument in ActionComplete event.

razor
controller.cs
@{
    string value = @" <div> <p>The RichTextEditor is WYSIWYG ('what you see is what you get') editor useful to create and edit content, and return the valid <a href='https://ej2.syncfusion.com/aspnetmvc/RichTextEditor/Overview'>HTML markup</a> or <a href='https://ej2.syncfusion.com/aspnetmvc/RichTextEditor/DefaultMode'>markdown</a> of the content</p>
    <p><b> Toolbar </b></p>
    <ol>
        <li>
            <p> Toolbar contains commands to align the text, insert link, insert image, insert list, undo / redo operations, HTML view, etc </p>
        </li>
        <li>
            <p> Toolbar is fully customizable </p>
        </li>
    </ol>
    <p><b> Links </b></p>
    <ol>
        <li>
            <p> You can insert a hyperlink with its corresponding dialog</p>
        </li>
        <li>
            <p> Attach a hyperlink to the displayed text. </p>
        </li>
        <li>
            <p> Customize the quick toolbar based on the hyperlink </p>
        </li>
    </ol>
    <p><b> Image.</b></p>
    <ol>
        <li>
            <p> Allows you to insert images from an online source as well as the local computer</p>
        </li>
        <li>
            <p> You can upload an image</p>
        </li>
        <li>
            <p> Provides an option to customize quick toolbar for an image </p>
        </li>
    </ol>
    <img alt='Logo' src='https://ej2.syncfusion.com/demos/src/rich-text-editor/images/RTEImage-Feather.png' style='width: 300px' />
</div>";
}


<div class="control-section">
    @Html.EJS().RichTextEditor("defaultRTE").ToolbarSettings(e => e.Items((object)ViewBag.tools)).Value(value).ShowCharCount(true).MaxLength(2000).Created("created").ActionComplete("actionCompleteHandler").Render()
</div>

<link href="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.39.0/codemirror.css" rel="stylesheet" />
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.3.0/codemirror.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.3.0/mode/css/css.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.3.0/mode/xml/xml.js" type="text/javascript"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/codemirror/5.3.0/mode/htmlmixed/htmlmixed.js" type="text/javascript"></script>
<style>
    .e-code-mirror::before {
        content: '\e345';
    }

    .e-html-preview::before {
        content: '\e350';
    }

    .CodeMirror-linenumber,
    .CodeMirror-gutters {
        display: none;
    }

    .sb-header {
        z-index: 100;
    }
</style>
<script type="text/javascript">
    var defaultRTE;
    var divPreview;
    var myCodeMirror;
    var textArea
    divPreview = document.getElementById('DIV_Preview');
    function created() {
        defaultRTE = this;
        textArea = defaultRTE.contentModule.getEditPanel();

    }
    function mirrorConversion(e) {
        var id = defaultRTE.getID() + 'mirror-view';
        var mirrorView = defaultRTE.element.querySelector('#' + id);
        var charCount = defaultRTE.element.querySelector('.e-rte-character-count');
        if (e.targetItem === 'Preview') {
            textArea.style.display = 'block';
            mirrorView.style.display = 'none';
            textArea.innerHTML = myCodeMirror.getValue();
            charCount.style.display = 'block';
        }
        else {
            if (!mirrorView) {
                mirrorView = ej.base.createElement('div', { className: 'e-content' });
                mirrorView.id = id;
                textArea.parentNode.appendChild(mirrorView);
            }
            else {
                mirrorView.innerHTML = '';
            }
            textArea.style.display = 'none';
            mirrorView.style.display = 'block';
            renderCodeMirror(mirrorView, defaultRTE.value);
            charCount.style.display = 'none';
        }
    }
    function renderCodeMirror(mirrorView, content) {
        myCodeMirror = CodeMirror(mirrorView, {
            value: content,
            lineNumbers: true,
            mode: 'text/html',
            lineWrapping: true,
        });
    }
    function actionCompleteHandler(e) {
        if (e.targetItem && (e.targetItem === 'SourceCode' || e.targetItem === 'Preview')) {
            this.sourceCodeModule.getPanel().style.display = 'none';
            mirrorConversion(e);
        }
        else {
            setTimeout(function () { defaultRTE.toolbarModule.refreshToolbarOverflow(); }, 400);
        }
    }
</script>
public class HomeController : Controller
{
    public ActionResult Index()
    {

        ViewBag.items = new[] { "SourceCode" };
        return View();
    }
}

At.js Integration

RichTextEditor can easily be integrated with At.js library. To display the autocomplete list, type ‘@’.

Include At.JS style.

 <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/at.js/1.4.0/css/jquery.atwho.min.css">

Include At.JS javascript.

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/at.js/1.4.0/js/jquery.atwho.min.js"></script>

Define the At.js configuration

In below configuration, email id of employees list - email id of employees from the data source.

var config = {
    at: "@",
    data: [email id of employees list],
    displayTpl: '<li>${name} <small>${email}</small></li>',
    limit: 200
  }

Populate the employee’s email id from local or remote data and set the result to the data of At.js configuration.

razor
controller.cs
@{
    string value = @"<p>The rich text editor control is WYSIWYG ('what you see is what you get') editor that provides the best user experience to create and update the content. 
                        Users can format their content using standard toolbar commands.</p>
    <p><b> Key features:</b></p>

    <ul>
        <li><p> Provides &lt; IFRAME &gt; and &lt; DIV &gt; modes </p></li>

        <li><p> Capable of handling markdown editing.</p></li>

        <li><p> Contains a modular library to load the necessary functionality on demand.</p></li>

        <li><p> Provides a fully customizable toolbar.</p></li>

        <li><p> Provides HTML view to edit the source directly for developers.</p></li>
    
        <li><p> Supports third - party library integration.</p></li>
    
        <li><p> Allows preview of modified content before saving it.</p></li>
    
        <li><p> Handles images, hyperlinks, video, hyperlinks, uploads, etc.</p></li>
    
        <li><p> Contains undo / redo manager.</p></li>
    
        <li><p> Creates bulleted and numbered lists.</p></li>
                                        
    </ul>";
}
<div class="control-section">
    @Html.EJS().RichTextEditor("thirdparty").Value(value).Height("500").Created("created").ToolbarSettings(e=>e.Items((object)ViewBag.items)).Render()
</div>
<script src="//cdn.syncfusion.com/js/assets/external/jquery-1.11.3.min.js" type="text/javascript"></script>
<link rel="stylesheet" href="//cdnjs.cloudflare.com/ajax/libs/at.js/1.4.0/css/jquery.atwho.min.css">
<script type="text/javascript" src="//cdnjs.cloudflare.com/ajax/libs/at.js/1.4.0/js/jquery.atwho.min.js"></script>
<script>
    // Build data to be used in At.JS config.
    var employeeList = [
        { id: 'emp01', name: 'Jacob', email: 'jacob@mail.com' },
        { id: 'emp02', name: 'Isabella', email: 'isabella@mail.com' },
        { id: 'emp03', name: 'Ethan', email: 'ethan@mail.com' },
        { id: 'emp04', name: 'Emma', email: 'emma@mail.com' },
        { id: 'emp05', name: 'Michael', email: 'michael@mail.com' },
        { id: 'emp06', name: 'Olivia', email: 'olivia@mail.com' },
        { id: 'emp07', name: 'Jeniffer', email: 'jeniffer@mail.com' }
    ];
       var config = {
        at: "@@",
        data: employeeList,
        displayTpl: '<li>${name} <small>${email}</small></li>',
        limit: 200
    };
    function created(args) {
        var textArea = this.contentModule.getEditPanel();
        $(textArea).atwho(config);
        $(textArea).on('keydown', function (e) {
            if (e.keyCode == 13 && $(textArea).atwho('isSelecting'))
                return false;
        });
    }
</script>
public class HomeController : Controller
{

    public ActionResult Index()
    {
        ViewBag.items = new object[] {"|", "Undo", "Redo", "|",
        "Bold", "Italic", "Underline", "StrikeThrough", "|",
        "FontName", "FontSize", "FontColor", "BackgroundColor", "|",
        "SubScript", "SuperScript", "|",
        "LowerCase", "UpperCase", "|",
        "Formats", "Alignments", "|", "OrderedList", "UnorderedList", "|",
        "Outdent", "Indent", "|", "CreateLink", "CreateTable", "Image", "|", "SourceCode"};
        return View();
    }
}

Embed.ly Integration

RichTextEditor easily integrate with Embed.ly which is probably the best service when it comes to embed the rich content such as Twitter, Facebook, Instagram and lots of other publishing platform embeds.

<script src="https://cdn.embedly.com/widgets/platform.js" charset="UTF-8"></script>

In the following sample, the Embed.ly class embedly-card has been added to <a> tag in ActionComplete event.

razor
controller.cs
@{
    string value = @" <p>
    The RichTextEditor control is WYSIWYG ('what you see is what you get') editor that provides the best user experience to create and update the content.
    Users can format their content using standard toolbar commands.
</p>
<p><b> Key features:</b></p>
<ul>
    <li><p> Provides &lt; IFRAME &gt; and &lt; DIV &gt; modes </p></li>
    <li><p> Capable of handling markdown editing.</p></li>

    <li><p> Contains a modular library to load the necessary functionality on demand.</p></li>

    <li><p> Provides a fully customizable toolbar.</p></li>

    <li><p> Provides HTML view to edit the source directly for developers.</p></li>

    <li><p> Supports third - party library integration.</p></li>

    <li><p> Allows preview of modified content before saving it.</p></li>

    <li><p> Handles images, hyperlinks, video, hyperlinks, uploads, etc.</p></li>

    <li><p> Contains undo / redo manager.</p></li>

    <li><p> Creates bulleted and numbered lists.</p></li>

</ul>";
}

<div class="control-section">
    @Html.EJS().RichTextEditor("thirdparty").Value(value).ActionComplete("actionComplete").ToolbarSettings(e => e.Items((object)ViewBag.items)).Render()
</div>
<script async src="https://cdn.embedly.com/widgets/platform.js" charset="UTF-8"></script>
<script>
    function actionComplete(args) {
        if (args.requestType === 'Links') {
            if (args.elements[0].parentNode && args.elements[0].parentNode.tagName === 'A') {
                var emberEle = document.createElement('blockquote');
                emberEle.setAttribute('class', 'embedly-card');
                emberEle.appendChild(args.elements[0].parentElement);
                emberEle.appendChild(document.createElement('p'));
                args.range.insertNode(emberEle);
            }
        }
    }
</script>
public class HomeController : Controller
{

    public ActionResult Index()
    {
        ViewBag.items = new object[] { "CreateLink" };
        return View();
    }
}