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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_SWIFTUI && compiler(>=6.0)
import Foundation
// MARK: Supporting types
extension WebPage {
/// The result of handling a JavaScript confirm invocation.
@available(iOS 26.0, macOS 26.0, visionOS 26.0, *)
@available(watchOS, unavailable)
@available(tvOS, unavailable)
public enum JavaScriptConfirmResult: Hashable, Sendable {
/// Signals an affirmative action was produced by the invocation.
case ok
/// Signals a negative action was produced by the invocation.
case cancel
}
/// The result of handling a JavaScript confirm invocation.
@available(iOS 26.0, macOS 26.0, visionOS 26.0, *)
@available(watchOS, unavailable)
@available(tvOS, unavailable)
public enum JavaScriptPromptResult: Hashable, Sendable {
/// Signals an affirmative action was produced by the invocation with the specified text.
case ok(Swift.String)
/// Signals a negative action was produced by the invocation.
case cancel
}
/// The result of handling a JavaScript open invocation.
@available(iOS 26.0, macOS 26.0, visionOS 26.0, *)
@available(watchOS, unavailable)
@available(tvOS, unavailable)
public enum FileInputPromptResult: Hashable, Sendable {
/// Signals an affirmative action was produced by the invocation with the specified files.
case selected([Foundation.URL])
/// Signals a negative action was produced by the invocation.
case cancel
}
}
// MARK: DialogPresenting protocol
extension WebPage {
/// Allows providing custom behavior to handle JavaScript actions and provide a response.
///
/// Typically when handling these, some UI should be presented to the user for them to provide a response,
/// which will then be communicated back to JavaScript.
///
/// When these methods are invoked, JavaScript is blocked until the async method returns.
@available(iOS 26.0, macOS 26.0, visionOS 26.0, *)
@available(watchOS, unavailable)
@available(tvOS, unavailable)
public protocol DialogPresenting {
/// A JavaScript `alert()` function has been invoked.
///
/// - Parameters:
/// - message: The message provided by JavaScript.
/// - frame: Information about the frame whose JavaScript process initiated this call.
@MainActor
func handleJavaScriptAlert(message: Swift.String, initiatedBy frame: WebPage.FrameInfo) async
/// A JavaScript `confirm()` function has been invoked.
///
/// - Parameters:
/// - message: The message provided by JavaScript.
/// - frame: Information about the frame whose JavaScript process initiated this call.
/// - Returns: The result of handling the invocation.
@MainActor
func handleJavaScriptConfirm(message: Swift.String, initiatedBy frame: WebPage.FrameInfo) async -> WebPage.JavaScriptConfirmResult
/// A JavaScript `prompt()` function has been invoked.
///
/// - Parameters:
/// - message: The message provided by JavaScript.
/// - defaultText: The initial text provided by JavaScript, intended to be displayed in some text entry field.
/// - frame: Information about the frame whose JavaScript process initiated this call.
/// - Returns: The result of handling the invocation; if the result is affirmative, the response will include some text returned to JavaScript.
@MainActor
func handleJavaScriptPrompt(
message: Swift.String,
defaultText: Swift.String?,
initiatedBy frame: WebPage.FrameInfo
) async -> WebPage.JavaScriptPromptResult
/// Returns the result of handling a JavaScript request to open files.
///
/// - Parameters:
/// - parameters: The options to use for the file dialog.
/// - frame: Information about the frame whose JavaScript process initiated this call.
/// - Returns: The result of handling the invocation; if the result is affirmative, the response will include a set of files returned to JavaScript.
@MainActor
func handleFileInputPrompt(
parameters: WKOpenPanelParameters,
initiatedBy frame: WebPage.FrameInfo
) async -> WebPage.FileInputPromptResult
}
}
// MARK: Default implementation
@available(iOS 26.0, macOS 26.0, visionOS 26.0, *)
@available(watchOS, unavailable)
@available(tvOS, unavailable)
extension WebPage.DialogPresenting {
/// By default, this method immediately returns.
@MainActor
public func handleJavaScriptAlert(message: Swift.String, initiatedBy frame: WebPage.FrameInfo) async {
}
/// By default, this method immediately returns with a result of `.cancel`.
@MainActor
public func handleJavaScriptConfirm(
message: Swift.String,
initiatedBy frame: WebPage.FrameInfo
) async -> WebPage.JavaScriptConfirmResult {
.cancel
}
/// By default, this method immediately returns with a result of `.cancel`.
@MainActor
public func handleJavaScriptPrompt(
message: Swift.String,
defaultText: Swift.String?,
initiatedBy frame: WebPage.FrameInfo
) async -> WebPage.JavaScriptPromptResult {
.cancel
}
/// By default, this method immediately returns with a result of `.cancel`.
@MainActor
public func handleFileInputPrompt(
parameters: WKOpenPanelParameters,
initiatedBy frame: WebPage.FrameInfo
) async -> WebPage.FileInputPromptResult {
.cancel
}
}
#endif
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