Slatewave for Xcode

//
//  PaletteController.swift
//  Slatewave Theme Browser
//
//  Created by Kevin Langley on 05/03/2026.
//  Copyright © 2026 Slatewave. All rights reserved.
//

import SwiftUI
import OSLog

let SLATEWAVE_PREVIEW_WIDTH: CGFloat = 440
let SLATEWAVE_PREVIEW_HEIGHT: CGFloat = 485

final class PaletteController: NSViewController, ObservableObject {
    @Published var data: PaletteIdentifiableData?

    override func loadView() {
        // hand the view off to a SwiftUI host
        let rootView = PaletteRootView()
            .frame(width: SLATEWAVE_PREVIEW_WIDTH, height: SLATEWAVE_PREVIEW_HEIGHT)
            .environmentObject(self)

        let hostedView = NSHostingView(rootView: rootView)
        view = hostedView
    }

    /// Cancels the current preview session.
    /// Closes the preview UI without applying anything from the user.
    func cancel() {
        previewContext.cancelRequest(
            withError: NSError(domain: PreviewErrorDomain, code: PreviewError.userCanceled.rawValue))
    }

    func cancelWithFailed() {
        Logger.preview.error("cancelling preview context as failed")
        previewContext.cancelRequest(
            withError: NSError(domain: PreviewErrorDomain, code: PreviewError.failed.rawValue))
    }

    func cancelWithUserInteractionRequired() {
        Logger.preview.info("user interaction is required")
        previewContext.cancelRequest(
            withError: NSError(domain: PreviewErrorDomain, code: PreviewError.userInteractionRequired.rawValue))
    }
}