This editor is probably executed using MultiPageEditorPart , although I cannot find the exact class. (Update: Found a class , although I don't think this will help much ...)
To create such an editor yourself, you should start by creating a new plug-in project using a plug-in with a multi-page editor template. Perhaps this tutorial will help you get started.
Note that this will be an editor (placed in the center of the Eclipse desktop and used to edit some file), and neither a view (placed on the side, providing some additional functions), nor a dialog box. Instead, you may need to create a multi-page wizard containing one page for each tab. This will be more in line with the overall look of Eclipse. The above link also gives some tips.
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