[英]How do I get the file open dialog to work, when called through a SwiftUI WKWebView inside a macOS native app?
I'm currently running a simplistic WkWebView made in SwiftUI - with all the advice that I was able to glimpse from this StackOverflow post .我目前正在运行一个用 SwiftUI 制作的简单 WkWebView - 包含我能够从这篇 StackOverflow 帖子中看到的所有建议。 It opens up a website.它打开一个网站。 The website has a browser button.该网站有一个浏览器按钮。 If I click on the browser button on Safari, a Finder window opens.如果我单击 Safari 上的浏览器按钮,则会打开一个 Finder 窗口。 If I do the same thing inside the .app created with Xcode, a Finder window does not open.如果我在用 Xcode 创建的 .app 中做同样的事情,Finder 窗口不会打开。
This is the stuff I've enabled in the Sandbox:这是我在沙箱中启用的东西:
The code that I use is this (all from ContentView.swift)我使用的代码是这个(全部来自 ContentView.swift)
import SwiftUI
import WebKit
public struct WebBrowserView {
private let webView: WKWebView = WKWebView()
// ...
public func load(url: URL) {
webView.load(URLRequest(url: url))
}
public class Coordinator: NSObject, WKNavigationDelegate, WKUIDelegate {
var parent: WebBrowserView
init(parent: WebBrowserView) {
self.parent = parent
}
public func webView(_: WKWebView, didFail: WKNavigation!, withError: Error) {
// ...
}
public func webView(_: WKWebView, didFailProvisionalNavigation: WKNavigation!, withError: Error) {
// ...
}
public func webView(_: WKWebView, didFinish: WKNavigation!) {
// ...
}
public func webView(_ webView: WKWebView, didStartProvisionalNavigation navigation: WKNavigation!) {
// ...
}
public func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
decisionHandler(.allow)
}
public func webView(_ webView: WKWebView, createWebViewWith configuration: WKWebViewConfiguration, for navigationAction: WKNavigationAction, windowFeatures: WKWindowFeatures) -> WKWebView? {
if navigationAction.targetFrame == nil {
webView.load(navigationAction.request)
}
return nil
}
}
public func makeCoordinator() -> Coordinator {
Coordinator(parent: self)
}
}
#if os(macOS) // macOS Implementation (iOS version omitted for brevity)
extension WebBrowserView: NSViewRepresentable {
public typealias NSViewType = WKWebView
public func makeNSView(context: NSViewRepresentableContext<WebBrowserView>) -> WKWebView {
webView.navigationDelegate = context.coordinator
webView.uiDelegate = context.coordinator
return webView
}
public func updateNSView(_ nsView: WKWebView, context: NSViewRepresentableContext<WebBrowserView>) {
}
}
#endif
struct BrowserView: View {
private let browser = WebBrowserView()
var body: some View {
HStack {
browser
.onAppear() {
self.browser.load(url: URL(string: "http://specificwebsitewithbrowserbutton")!)
}
}
.padding()
}
}
struct ContentView: View {
@State private var selection = 1
var body: some View {
BrowserView()
.frame(maxWidth: .infinity, maxHeight: .infinity)
}
}
So, how do I give this .app enough permissions so that a Finder window will open when I click a "Upload" button on the website?那么,如何给这个 .app 足够的权限,以便在我点击网站上的“上传”按钮时打开 Finder 窗口?
You have to implement the following WKUIDelegate
delegate method您必须实现以下WKUIDelegate
委托方法
/** @abstract Displays a file upload panel.
@param webView The web view invoking the delegate method.
@param parameters Parameters describing the file upload control.
@param frame Information about the frame whose file upload control initiated this call.
@param completionHandler The completion handler to call after open panel has been dismissed. Pass the selected URLs if the user chose OK, otherwise nil.
If you do not implement this method, the web view will behave as if the user selected the Cancel button.
*/
@available(OSX 10.12, *)
optional func webView(_ webView: WKWebView, runOpenPanelWith
parameters: WKOpenPanelParameters, initiatedByFrame frame: WKFrameInfo,
completionHandler: @escaping ([URL]?) -> Void)
Here is example of implementation下面是示例实现的
func webView(_ webView: WKWebView, runOpenPanelWith parameters: WKOpenPanelParameters, initiatedByFrame frame: WKFrameInfo, completionHandler: @escaping ([URL]?) -> Void) {
let openPanel = NSOpenPanel()
openPanel.canChooseFiles = true
openPanel.begin { (result) in
if result == NSApplication.ModalResponse.OK {
if let url = openPanel.url {
completionHandler([url])
}
} else if result == NSApplication.ModalResponse.cancel {
completionHandler(nil)
}
}
}
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