If a user creates an unordered list and then decides to switch to an ordered list, they can do it simply by clicking on the "Insert Ordered List" button and vice versa.

However, if the list another list nested within it, the action either does not work or exhibits weird behavior. Please have a look at the attached example project containing the editor and a sample nested list string.

1. Placing your cursor within the outer ordered list highlights the "Insert Ordered List" button. Clicking on the "Insert Unordered List" button will either fail, create a weird intermediate level only for the item currently containing the cursor, or only change the item currently under the cursor.

2. Attempting to highlight the entire list will also highlight both the Insert List buttons. Clicking on Insert Ordered List will flatten the whole thing into paragraphs. Clicking on Insert Unordered List will mess up the list.

I expect the editor should more or less work similarly to the form in which I'm typing this message.

If the editor's HTML markup contains inline CSS styles, and a CSS attribute value includes a semicolon (;), it breaks the applied styles and throws an exception.

For example:

<p style= "" ....background-image: url('data:image/png;base64...;""</p>

The exception is:

Uncaught TypeError: Cannot read properties of undefined (reading 'trim')

=== ADMIN EDIT ===

The issue can also occur when there is an invalid inline style with two semicolons without a complete style-value pair in-between.

For example:

<p style=""color:red; b ;"">sdf</p>

I'm using the Editor in a form along with several other inputs (e.g. TextBox, NumericTextBox).

If the user enters an invalid value for the other inputs, they get a red border. The Editor, however, does not have such a border when its value is invalid and thus the form elements are not consistent. Please add a red border for the invalid state of the Editor, too.

===

ADMIN EDIT

===

At this stage, the Editor is not treated as a standard input and it does not support all of the input's capabilities - such as invalid state, disabled state, sizing, fill and more.

The current request may potentially be part of a bigger design story that strives to align the Editor's functionalities with the rest of the inputs ( TextBox, NumericTextBox and more).

Clicking the image, and selecting the image button brings up a popup. The "Update" button is not appearing properly (does not occur on other editor popups):

*** Thread created by admin on customer behalf ***

At the moment, the insertHTML command is a block command - meaning, it will wrap your content in a <p> tag if it is an inline tag (such as an anchor).

I would like to be able to insert inline content as well without it getting wrapped in a block parent.

*** Thread created by admin on customer behalf ***

Please review your demo at https://demos.telerik.com/blazor-ui/editor/overview in Safari on MacOS and you'll see that the HTML Editor's height is not showing correctly.

If I click accidentally click on one of the alignment options, I cannot then unselect it.

===========

ADMIN EDIT

Video of the current behavior attached.

===========

At the moment bullet lists are lost.

---

ADMIN EDIT

Short version: The editor must implement content filters that transform the HTML MS Word provides into actual HTML (e.g., bullets from Word come as paragraphs, not <ul>).

Long version:

By default, pasting content from an application to another application goes through the OS and the applications can choose what flavor of the content to provide. In the case of pasting to a browser, the browser informs MS Word to provide an HTML version of the content. What Word provides is often pretty bad HTML where a lot of the formatting is gone.

For example, bullet lists become paragraphs that have a span with a dot in it, but this is not a real bullet list.

You can compare that behavior between the Telerik editor and the naked behavior of the browser with markup like this:

<div contenteditable="true" style="min-height: 200px; border: 1px solid red;"></div>

<TelerikEditor></TelerikEditor>

An editor component will do some processing that tries to ensure valid HTML and so some content changes are inevitable. The key thing is that we preserve the main HTML structure that Word provides.

---

---

ADMIN EDIT

A workaround is to initialize the RemoveAttributes list:

<TelerikEditor @bind-Value="@EditorContent">
    <EditorSettings>
        <EditorPasteSettings 
                             RemoveAttributes="@( new List<string>() )"
                            >
        </EditorPasteSettings>
    </EditorSettings>
</TelerikEditor>

@EditorContent

@code{
    string EditorContent { get; set; }
}

---

When you paste a table in the Editor or insert one through the InsertHTML tool, most of the Editor Table tools don't work on the pasted table. Only Delete Table tool can be used. The rest of the Table tools do not seem to invoke any action with the table.

If you create table using the Create Table tool this behavior is not present, you can accordingly apply the built-in Table tools.

Hi!

When using the Telerik Editor for Blazor, especially the insert HTML function, something seems a little odd.

I reproduced the same behaviour of my application in your demos on your website.

It seems like it is currently not possible to insert a HTML with multiple Lines in it, it only inserts the first line within the given value.

For better understanding, I've attached a video which displays the behaviour.

The HTML i've used:

<p>Test</p><p><br /></p><p>with</p><p><br /></p><p>Line</p><p><br /></p><p>breaks</p><p><br /></p><p><br /></p><p>1</p><p><br /></p><p>2</p><p><br /></p><p>3</p><p><br /></p>

Especially when you are working with HTML-Templates, it is necessary to be able to insert a rich HTML Template with multiple lines, tables, etc..

Thank you for your help in advance!

Best regards,

Stefan

The Editor is missing some CSS styles when the EditMode is Div. As a result, the table resizers are misplaced and table cell borders are missing.

The workaround is to add those styles explicitly, until the issue is fixed.

@using Telerik.Blazor.Components.Editor

<TelerikEditor @bind-Value="@EditorValue"
               Tools="@ToolCollection"
               EditMode="@EditorEditMode.Div" />

<style>
.ProseMirror-selectednode {
  outline: 2px solid #8cf;
}
div.ProseMirror {
  position: relative;
  min-height: 100%;
  word-wrap: break-word;
  white-space: pre-wrap;
  white-space: break-spaces;
  -webkit-font-variant-ligatures: none;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0; /* the above doesn't seem to work in Edge */
}
div.ProseMirror:focus {
  outline: none;
}
.ProseMirror pre {
  white-space: pre-wrap;
}
.ProseMirror-hideselection *::selection { background: transparent; }
.ProseMirror-hideselection *::-moz-selection { background: transparent; }
.ProseMirror-hideselection { caret-color: transparent; }
.ProseMirror li {
  position: relative;
}
li.ProseMirror-selectednode {
  outline: none;
}
li.ProseMirror-selectednode:after {
  content: "";
  position: absolute;
  left: -32px;
  right: -2px;
  top: -2px;
  bottom: -2px;
  border: 2px solid #8cf;
  pointer-events: none;
}
.ProseMirror-gapcursor {
  display: none;
  pointer-events: none;
  position: absolute;
}
.ProseMirror-gapcursor:after {
  content: "";
  display: block;
  position: absolute;
  top: -2px;
  width: 20px;
  border-top: 1px solid black;
  animation: ProseMirror-cursor-blink 1.1s steps(2, start) infinite;
}
@keyframes ProseMirror-cursor-blink {
  to {
    visibility: hidden;
  }
}
.ProseMirror-focused .ProseMirror-gapcursor {
  display: block;
}
.k-editor-resize-handles-wrapper {
  position: absolute;
  visibility: hidden;
}
.k-editor-resize-handle {
  position: absolute;
  visibility: visible;
  background-color: #fff;
  border: 1px solid #000;
  z-index: 100;
  width: 5px;
  height: 5px;
}
.k-editor-resize-handle.northwest {
  top: 0;
  left: 0;
  transform: translate(-50%, -50%);
  cursor: nw-resize;
}
.k-editor-resize-handle.north {
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  cursor: n-resize;
}
.k-editor-resize-handle.northeast {
  top: 0;
  right: 0;
  transform: translate(50%, -50%);
  cursor: ne-resize;
}
.k-editor-resize-handle.southwest {
  left: 0;
  bottom: 0;
  transform: translate(-50%, 50%);
  cursor: sw-resize;
}
.k-editor-resize-handle.south {
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 50%);
  cursor: s-resize;
}
.k-editor-resize-handle.southeast {
  right: 0;
  bottom: 0;
  transform: translate(50%, 50%);
  cursor: se-resize;
}
.k-editor-resize-handle.west {
  top: 50%;
  left: 0;
  transform: translate(-50%, -50%);
  cursor: w-resize;
}
.k-editor-resize-handle.east {
  top: 50%;
  right: 0;
  transform: translate(50%, -50%);
  cursor: e-resize;
}
.ProseMirror .tableWrapper {
  overflow-x: auto;
  margin: 1em 0;
}
.k-editor-resize-wrap-element {
  display: inline-block;
  position: relative;
}
.ProseMirror .row-resize-handle {
  position: absolute;
  right: 0; left: 0; bottom: 0;
  transform: translate(0, 50%);
  height: 4px;
  z-index: 20;
  background-color: #adf;
  pointer-events: none;
}
.ProseMirror.resize-cursor-vertical {
  cursor: sn-resize;
  cursor: row-resize;
}
.k-editor-resize-wrap-element table td p,
.k-editor-resize-wrap-element table th p {
  margin: 0 auto;
}
.ProseMirror table {
  margin: 0;
  border-collapse: collapse;
  table-layout: fixed;
  width: 100%;
  overflow: hidden;
}
.ProseMirror td, .ProseMirror th {
  min-width: 1em;
  border: 1px solid #ddd;
  padding: 3px 5px;
  vertical-align: top;
  box-sizing: border-box;
  position: relative;
}
.ProseMirror th {
  font-weight: bold;
  text-align: left;
}
.ProseMirror .column-resize-handle {
  position: absolute;
  right: -2px; top: 0; bottom: 0;
  width: 4px;
  z-index: 20;
  background-color: #adf;
  pointer-events: none;
}
.ProseMirror.resize-cursor {
  cursor: ew-resize;
  cursor: col-resize;
}
/* Give selected cells a blue overlay */
.ProseMirror .selectedCell:after {
  z-index: 2;
  position: absolute;
  content: "";
  left: 0; right: 0; top: 0; bottom: 0;
  background: rgba(200, 200, 255, 0.4);
  pointer-events: none;
}
</style>

@code {
    string EditorValue { get; set; }

    public List<IEditorTool> ToolCollection { get; set; } = new List<IEditorTool>() {
            new InsertTable()
        };
}

Hello,

If the Edtor content includes <br /> tags, they will be lost if the user copy-pastes them to a plain text environment such as Notepad or a <textarea>.

Hello,

I expect Shift + Ins to behave like a standard paste (Ctrl + V), but instead, it behaves like a plain text paste (Ctrl + Shift+ V).

===

Telerik edit: This was a ProseMirror issue, which was fixed on their side. Changes took effect in Telerik UI for Blazor 5.0.0.

The TelerikEditor demos all show bind-Value being used to marshal HTML in and out of the editor:

<TelerikEditor @bind-Value="@TheEditorValue" Width="650px" Height="400px"></TelerikEditor>

However, this causes problems - the underlying ProseMirror component emits it's own HTML (e.g. for image drag handles), which is visible in the bound Value property.

We need to be able to export "clean" HTML from the viewer, otherwise we end up saving this superflous HTML as part of our document.

Code

This REPL shows the issue:

https://blazorrepl.telerik.com/mHODmObJ36vZ7ivR09

@page "/editor/tools"

@using Telerik.Blazor.Components.Editor 

<TelerikEditor Tools="@EditorToolSets.All"
               Height="300px"
               @bind-Value="@Value"
               EditMode="EditorEditMode.Div"
               ></TelerikEditor>

<pre style="white-space: pre-wrap;">@Value</pre>

@code {
    public string Value { get; set; } =
        "<img src=\"img/toolbar-assets/repl-logo.svg\" />";
}

Steps to Reproduce

1. Open the REPL and click "Run" - observe that the bound HTML is simply

<img src="img/toolbar-assets/repl-logo.svg" />

2. Click on the Telerik logo image inside the editor - observe that the bound HTML is now

<p><img src="img/toolbar-assets/repl-logo.svg" contenteditable="false" draggable="true" class="ProseMirror-selectednode"><div class="k-editor-resize-handles-wrapper ProseMirror-widget" style="width: 857px; height: 78px; top: 8px; left: 8px;" contenteditable="false"><div class="k-editor-resize-handle southeast" data-dir-image-resize="southeast"></div><div class="k-editor-resize-handle east" data-dir-image-resize="east"></div><div class="k-editor-resize-handle south" data-dir-image-resize="south"></div><div class="k-editor-resize-handle north" data-dir-image-resize="north"></div><div class="k-editor-resize-handle west" data-dir-image-resize="west"></div><div class="k-editor-resize-handle southwest" data-dir-image-resize="southwest"></div><div class="k-editor-resize-handle northwest" data-dir-image-resize="northwest"></div><div class="k-editor-resize-handle northeast" data-dir-image-resize="northeast"></div></div><br class="ProseMirror-trailingBreak"></p>

3. Deselect the image - observe that the bound HTML no longer contains the image handles etc, but is still more verbose than when we started

<p><img src="img/toolbar-assets/repl-logo.svg" contenteditable="false" draggable="true" class=""><br class="ProseMirror-trailingBreak"></p>

4. At any point during the above steps, click the "View HTML" button in the Editor toolbar - observe that it is able to present a "clean" structure which contains no ProseMirror markup etc.

Requirements

How do we access this HTML via the TelerikEditor Blazor APIs?