//
// ConditionsWebView.swift
// SimpleX (iOS)
//
// Created by Stanislav Dmitrenko on 26.11.2024.
// Copyright © 2024 SimpleX Chat. All rights reserved.
//
// Spec: spec/architecture.md
import SwiftUI
import WebKit
struct ConditionsWebView: UIViewRepresentable {
@State var html: String
var openLink: (URL) -> Void = openExternalLink
@EnvironmentObject var theme: AppTheme
@State var pageLoaded = false
func makeUIView(context: Context) -> WKWebView {
let config = WKWebViewConfiguration()
config.defaultWebpagePreferences.allowsContentJavaScript = false
config.websiteDataStore = .nonPersistent()
let view = WKWebView(frame: .zero, configuration: config)
view.backgroundColor = .clear
view.isOpaque = false
view.navigationDelegate = context.coordinator
DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
// just to make sure that even if updateUIView will not be called for any reason, the page
// will be rendered anyway
if !pageLoaded {
loadPage(view)
}
}
return view
}
func updateUIView(_ view: WKWebView, context: Context) {
loadPage(view)
}
private func loadPage(_ webView: WKWebView) {
let nonce = UUID().uuidString
let styles = """
"""
let csp = ""
let head = "\(csp)\(styles)"
webView.loadHTMLString(head + html, baseURL: nil)
DispatchQueue.main.async {
pageLoaded = true
}
}
func makeCoordinator() -> Cordinator {
Cordinator(openLink: openLink)
}
class Cordinator: NSObject, WKNavigationDelegate {
let openLink: (URL) -> Void
init(openLink: @escaping (URL) -> Void) {
self.openLink = openLink
}
func webView(_ webView: WKWebView,
decidePolicyFor navigationAction: WKNavigationAction,
decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
guard let url = navigationAction.request.url else { return decisionHandler(.allow) }
switch navigationAction.navigationType {
case .linkActivated:
decisionHandler(.cancel)
openLink(url)
default:
decisionHandler(url.scheme == "about" ? .allow : .cancel)
}
}
}
}