<p dir="auto">Similar to Visual Studio extensions, I would like to register a specific file extension and swap out the code editor for a custom UI experience when that file opened.</p>
<p dir="auto">I want to implement an extension to display a graphical presentation for a binary file. I have had a look at markdown extension. But it displays the customized preview window with the default editor window side by side. So I want to know:</p>
<ol dir="auto">
<li>Is there a method to only open the preview window (customized) without opening the default editor window.</li>
<li>Can the default editor window be embedded in a customized window<br>
It will be great if extension developers can freely compose their customized window with the internal VSCode views such as Editor, Tab, etc.</li>
</ol>