41 lines
1.6 KiB
Swift
41 lines
1.6 KiB
Swift
import Cocoa
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import Quartz // QLPreviewingController
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import WebKit // WebView
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import os // OSLog
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private let log = OSLog(subsystem: Bundle.main.bundleIdentifier!, category: "preview-plugin")
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class PreviewViewController: NSViewController, QLPreviewingController {
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override var nibName: NSNib.Name? {
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return NSNib.Name("PreviewViewController")
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}
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/// Load resource file either from user documents dir (if exists) or app bundle (default).
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func bundleFile(filename: String, ext: String) throws -> String {
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if let userFile = URL.UserModDir?.appendingPathComponent(filename + "." + ext, isDirectory: false), userFile.exists() {
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return try String(contentsOf: userFile, encoding: .utf8)
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// else: do NOT copy! Breaks on future updates
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}
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// else, load bundle file
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let path = Bundle.main.url(forResource: filename, withExtension: ext)
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return try String(contentsOf: path!, encoding: .utf8)
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}
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func preparePreviewOfFile(at url: URL) async throws {
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let meta = MetaInfo(url)
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// throws an exception if appPlist not found. Thus allowing another QuickLook plugin to try
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let html = try PreviewGenerator(meta).generate(
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template: try bundleFile(filename: "template", ext: "html"),
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css: try bundleFile(filename: "style", ext: "css"),
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)
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// sure, we could use `WKWebView`, but that requires the `com.apple.security.network.client` entitlement
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//let web = WKWebView(frame: self.view.bounds)
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let web = WebView(frame: self.view.bounds)
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web.autoresizingMask = [.width, .height]
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self.view.addSubview(web)
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web.mainFrame.loadHTMLString(html, baseURL: nil) // WebView
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//web.loadHTMLString(html, baseURL: nil) // WKWebView
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}
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}
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