import Cocoa
import Quartz
import WebKit
class PreviewViewController: NSViewController, QLPreviewingController {
func bundleFile(filename: String, ext: String) throws -> String {
if let appSupport = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first {
let override = appSupport.appendingPathComponent(filename + "." + ext)
if FileManager.default.fileExists(atPath: override.path) {
return try String(contentsOfFile: override.path, encoding: .utf8)
}
}
// else, load bundle file
let path = Bundle.main.path(forResource: filename, ofType: ext)
return try String(contentsOfFile: path!, encoding: .utf8)
}
func preparePreviewOfFile(at url: URL) async throws {
let jsonFile = try String(contentsOf: url, encoding: .utf8)
let html = """
"""
// sure, we could use `WKWebView`, but that requires the `com.apple.security.network.client` entitlement
//let web = WKWebView(frame: self.view.bounds)
let web = WebView(frame: self.view.bounds)
web.autoresizingMask = [.width, .height]
self.view.addSubview(web)
web.mainFrame.loadHTMLString(html, baseURL: nil) // WebView
//web.loadHTMLString(html, baseURL: nil) // WKWebView
}
}