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import Cocoa
import Quartz
import SwiftUI
import WmapParser
class PreviewViewController: NSViewController, QLPreviewingController {
override var nibName: NSNib.Name? {
return NSNib.Name("PreviewViewController")
}
override func loadView() {
super.loadView()
}
func preparePreviewOfFile(at url: URL) async throws {
// Read the .wmap file content
let content = try String(contentsOf: url, encoding: .utf8)
// Get the user's preview style preference from shared UserDefaults
let sharedDefaults =
UserDefaults(suiteName: "group.systems.tranquil.Map") ?? UserDefaults.standard
let previewStyleString =
sharedDefaults.string(forKey: "quickLookPreviewStyle") ?? QuickLookPreviewStyle.map.rawValue
let previewStyle = QuickLookPreviewStyle(rawValue: previewStyleString) ?? .map
await MainActor.run {
// Clear any existing subviews and force cleanup
for subview in view.subviews {
if let hostingView = subview as? NSHostingView<AnyView> {
hostingView.rootView = AnyView(EmptyView())
}
subview.removeFromSuperview()
}
// Force memory cleanup
autoreleasepool {
let previewContent: AnyView
switch previewStyle {
case .plainText:
previewContent = AnyView(createPlainTextView(content: content))
case .highlightedText:
previewContent = AnyView(
createHighlightedTextView(content: content))
case .map:
let parsedMap = WmapParser.parse(content)
previewContent = AnyView(MapPreviewView(parsedMap: parsedMap))
}
let hostingView = NSHostingView(rootView: previewContent)
hostingView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(hostingView)
NSLayoutConstraint.activate([
hostingView.topAnchor.constraint(equalTo: view.topAnchor),
hostingView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
hostingView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
hostingView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
])
view.needsLayout = true
view.layoutSubtreeIfNeeded()
} // autoreleasepool
}
}
private func createPlainTextView(content: String) -> some View {
ScrollView([.horizontal, .vertical]) {
Text(content)
.font(.monospaced(.body)())
.multilineTextAlignment(.leading)
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
.padding()
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.white)
}
private func createHighlightedTextView(content: String) -> some View {
QuickLookTextEditor(content: content)
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.white)
}
deinit {
// Cleanup when view controller is deallocated
for subview in view.subviews {
if let hostingView = subview as? NSHostingView<AnyView> {
hostingView.rootView = AnyView(EmptyView())
}
subview.removeFromSuperview()
}
}
}
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