Javascript - How to clone Trix default link button?

Radek
August 3, 2024
206 views
1 vote
2 Answers

I would like to add a button to Trix editor that would insert YouTube video using custom HTML attribute. It seems to me that default link button is exactly what I need. I would need to just modify little bit what is done once someone click the link button after text is entered.

The standard link button

has Trix menu button
has input field
has input value validation
link and unlink functionality. I might want to remove the unlink button
inserts text into editor
inserted text / area is not editable

I was searching the net but did not find any example how to achieve what I want. The closest solution is https://www.kindleman.com.au/blog/advanced-actiontext-modifications-for-cms-use/ the embed, image, and link buttons are basically what I want. But it is coded in RoR. I know nothing about RoR.

Could someone help me to create my link (embed) button in Trix?

I know how to add a button. But I do not know how to open modal upon clicking the button. I know how to insert text.

var buttonHTML = '<button type="button" data-trix-attribute="red">RED</button>'

event.target.toolbarElement.
querySelector(".trix-button-group").
insertAdjacentHTML("beforeend", buttonHTML)

Tags: javascript trix

Answers

You’ve already figured out how to add a button, but you’re unsure about opening a modal and handling the insertion. Here’s a rough outline to get you started. Hopefully, you can figure out the rest 🙂

First, add your custom button:

document.addEventListener("trix-initialize", function(event) {
  var buttonHTML = '<button type="button" class="trix-button trix-button--icon trix-button--icon-red" data-trix-action="embed">Embed</button>';
  event.target.toolbarElement.querySelector(".trix-button-group--block-tools").insertAdjacentHTML("beforeend", buttonHTML);
});

Now, handle the button click to open a modal.Here’s a simple example using plain HTML:

document.addEventListener("click", function(event) {
  if (event.target.matches("[data-trix-action=embed]")) {
    var modal = document.createElement("div");
    modal.innerHTML = `
      <div class="modal">
        <div class="modal-content">
          <span class="close-button">&times;</span>
          <h2>Embed YouTube Video</h2>
          <input type="text" id="youtube-url" placeholder="Enter YouTube URL">
          <button id="embed-button">Embed</button>
        </div>
      </div>
    `;
    document.body.appendChild(modal);

    document.querySelector(".close-button").onclick = function() {
      modal.remove();
    };

    document.getElementById("embed-button").onclick = function() {
      var url = document.getElementById("youtube-url").value;
      if (url) {
        var embedHTML = `<iframe width="560" height="315" src="${url}" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>`;
        var trixEditor = document.querySelector("trix-editor");
        trixEditor.editor.insertHTML(embedHTML);
        modal.remove();
      } else {
        alert("Please enter a valid YouTube URL");
      }
    };
  }
});

This is the basic idea. The modal part is simple and ugly, but should be enough to get you started.

adding a button to the toolbar: There are two important
attributes that need to match the dialog:
data-trix-attribute="embed_URL" and data-trix-action="embed".
[source file]
Adding embed dialog similar to the link dialog: I matched
the data-trix-dialog="embed" and
data-trix-dialog-attribute="embed_URL" attribute values with the
button.
URL validation: I’ve added data-trix-method="setAttribute" to the Add button to validate URL and close dialog by calling SetAttribute from toolbar_controller.js ( to find out how it works check StimulusJS syntax )

For more details, see the comments in the code.

        document.addEventListener("trix-initialize", function(e) {
            
            /* toolbar elements ( src/trix/config/toolbar.js )  */
            const toolbarElement = e.target.toolbarElement;
            const toolbarContainer = toolbarElement.getElementsByClassName('trix-button-group--block-tools')[0];
            const trixDialogs = toolbarElement.getElementsByClassName('trix-dialogs')[0];

            /* add a buttom to toolbar  */
            const Button  = `<button id="embed-btn" type="button" class="trix-button" data-trix-attribute="embed_URL" data-trix-action="embed" title="Embed" tabindex="-1">Embed</button>`;
            toolbarContainer.insertAdjacentHTML("beforeend", Button);

            /* add a dialog HTML to toolbar */
            const embedDialogHTML = `
                <div class="trix-dialog trix-dialog--embed" data-trix-dialog="embed" data-trix-dialog-attribute="embed_URL">
                    <div class="trix-dialog__link-fields">
                    <input type="url" name="embed_URL" class="trix-input trix-input--dialog" placeholder="Enter a URL…" aria-label="URL" required="" data-trix-input="">
                    <div class="trix-button-group">
                        <input type="button" class="trix-button trix-button--dialog" value="Add" data-trix-method="setAttribute">
                    </div>
                    </div> 
                </div>
            `;
            trixDialogs.insertAdjacentHTML("beforeend", embedDialogHTML);

            
            const embedDialog = trixDialogs.getElementsByClassName('trix-dialog--embed')[0];
            const embedButton = embedDialog.getElementsByClassName('trix-button')[0];
            const embedURL = embedDialog.getElementsByClassName('trix-input')[0];

            embedButton.addEventListener('click',() => {
  
                if(!embedURL.checkValidity())
                   return;

                const youtubeIdRegex =
        /^(?:(?:https|http)://)?(?:www.)?(?:youtube.com|youtu.be).*(?<=/|v/|u/|embed/|shorts/|watch?v=)(?<!/user/)(?<id>[w-]{11})(?=?|&|$)/;

                let param = embedURL.value.match(youtubeIdRegex)?.groups?.id;

                /* validate youtube link */
                if(!param) {
                    alert('Youtube URL is not valid');
                    embedURL.value = '';
                    return;
                }

                const embedHTML = `
                <iframe width="320" height="215" src="https://www.youtube.com/embed/${param}/?controls=1"></iframe>`;

                /*  The HTML inside a content attachment is not subject to Trix’s document conversion rules and will be rendered as-is. */
                var attachment = new Trix.Attachment({ content: embedHTML })
                e.target.editor.insertAttachment(attachment);
           });



           window.addEventListener("load",() => {
                document.getElementById('result').onclick = () => {
                         document.getElementById('output').innerHTML = document.getElementById('x').value;
                };
           });


        });

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Trix editor Youtube feature</title>
    <link rel="stylesheet" type="text/css" href="https://unpkg.com/[email protected]/dist/trix.css">
    <script type="text/javascript" src="https://unpkg.com/[email protected]/dist/trix.umd.min.js"></script>
</head>
<body>
    <input id="x" type="hidden" name="content">
    <trix-editor input="x"></trix-editor>
    <br />
    <button id="result"> Preview </button>
    <b>output:</b>
    <div style="border:1px gray solid ; margin:10px; padding: 10px" id="output">

    </div>
</body>
</html>

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Javascript – How to clone Trix default link button?

Answers