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Replicating Sketch's Preview window

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KKevinGutowski
Last edited Aug 21, 2019
Created on Aug 21, 2019

This example demonstrates a Sketch plugin that mirrors the application’s Preview window into a floating panel, replicating the live webview content. It uses Sketch’s JavaScript API, including `NSApplication`, `NSPanel`, and `NSThread`, to locate the Preview window, copy its webview configuration, and load the same URL into a new `MSMirrorWebView`. The panel is styled as a floating, closable window without minimize or zoom buttons, and the mirrored webview is added as its only subview. The code does not process data but directly clones an existing UI component.

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