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// Copyright (C) 2024 Apple Inc. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
// BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
#if ENABLE_QUICKLOOK_FULLSCREEN
import OSLog
#if USE_APPLE_INTERNAL_SDK
@_spi(PreviewApplication) internal import QuickLook
#else
// FIXME: rdar://152166678 Rename this back to `QuickLook_SPI`.
internal import QuickLook_SPI_Temp
#endif
@objc @implementation extension WKPreviewWindowController {
enum UpdateError: Error {
case newUpdateQueued
}
// Used to workaround the fact that `@objc @implementation` does not support stored properties whose size can change
// due to Library Evolution. Do not use this property directly.
@MainActor
private final class Base {
var previewSession: PreviewSession?
var item: PreviewItem
var previewConfiguration: PreviewApplication.PreviewConfiguration
var windowOpenedContinuation: CheckedContinuation<Void, Error>?
init(item: PreviewItem, configuration: PreviewApplication.PreviewConfiguration) {
self.item = item
self.previewConfiguration = configuration
}
}
@nonobjc private static let logger = Logger(subsystem: "com.apple.WebKit", category: "Fullscreen")
@nonobjc private let base: Base
@nonobjc private var isClosing = false
@nonobjc private var isOpen = false
@nonobjc private final var previewSession: PreviewSession? {
get { base.previewSession }
set { base.previewSession = newValue }
}
@nonobjc private final var item: PreviewItem {
get { base.item }
set { base.item = newValue }
}
@nonobjc private final var previewConfiguration: PreviewApplication.PreviewConfiguration {
get { base.previewConfiguration }
set { base.previewConfiguration = newValue }
}
@nonobjc private final var windowOpenedContinuation: CheckedContinuation<Void, Error>? {
get { base.windowOpenedContinuation }
set { base.windowOpenedContinuation = newValue }
}
weak var delegate: WKPreviewWindowControllerDelegate?
@objc(initWithURL:sceneID:)
init(url: URL, sceneID: String) {
let item = PreviewItem(url: url, displayName: nil, editingMode: .disabled)
var configuration = PreviewApplication.PreviewConfiguration()
configuration.hideDocumentMenu = true
configuration.showCloseButton = true
configuration.matchScenePlacementID = sceneID
self.base = Base(item: item, configuration: configuration)
super.init()
}
func presentWindow() async {
let session = PreviewApplication.open(items: [item], selectedItem: nil, configuration: previewConfiguration)
self.previewSession = session
for await event in session.events {
switch event {
case .didOpen:
isOpen = true
windowOpenedContinuation?.resume()
case .didFail(let error):
isClosing = true
delegate?.previewWindowControllerDidClose(self)
windowOpenedContinuation?.resume(throwing: error)
Self.logger.error("Preview open failed with error \(error)")
case .didClose:
isClosing = true
delegate?.previewWindowControllerDidClose(self)
default:
break
}
}
}
func updateImage(_ url: URL) async {
item = PreviewItem(url: url, displayName: nil, editingMode: .disabled);
do {
if !isOpen {
if let continuation = windowOpenedContinuation {
// The Quick Look window isn't ready yet, but there's already been an earlier update queued
// Throw that update and queue this one instead
continuation.resume(throwing: UpdateError.newUpdateQueued)
}
try await withCheckedThrowingContinuation { continuation in
windowOpenedContinuation = continuation
}
}
try await previewSession?.update(items: [item])
} catch UpdateError.newUpdateQueued {
Self.logger.debug("WKPreviewWindowController.updateImage skipped: newer image update queued");
} catch {
Self.logger.error("WKPreviewWindowController.updateImage failed: \(error, privacy: .public)")
}
}
func dismissWindow() async {
guard !isClosing else {
return
}
do {
try await previewSession?.close();
} catch {
Self.logger.error("WKPreviewWindowController.dismissWindow failed: \(error, privacy: .public)")
}
}
}
#endif // ENABLE_QUICKLOOK_FULLSCREEN
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