80 lines
2.2 KiB
Swift
80 lines
2.2 KiB
Swift
//
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// ContentView.swift
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// Gemini
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//
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// Created by Shadowfacts on 7/12/20.
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//
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import SwiftUI
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import GeminiFormat
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import GeminiRenderer
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import GeminiProtocol
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struct ContentView: View {
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let navigator: NavigationManager
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@State var task: GeminiDataTask?
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@State var document: Document?
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@State var errorMessage: String?
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var body: some View {
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mainView
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.frame(minWidth: 480, maxWidth: .infinity, minHeight: 300, maxHeight: .infinity)
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.onReceive(navigator.$currentURL, perform: self.urlChanged)
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}
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@ViewBuilder
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private var mainView: some View {
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if let document = document {
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DocumentView(document: document, changeURL: navigator.changeURL)
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} else if let errorMessage = errorMessage {
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VStack {
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Text("An error occurred")
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.font(.headline)
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Text(errorMessage)
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}
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} else {
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loadingView
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.onAppear(perform: self.loadDocument)
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}
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}
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@ViewBuilder
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private var loadingView: some View {
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if #available(macOS 10.16, iOS 14.0, *) {
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ProgressView("Loading...")
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} else {
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Text("Loading...")
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}
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}
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private func loadDocument() {
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let url = navigator.currentURL
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task = try! GeminiDataTask(url: url, completion: { (response) in
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switch response {
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case let .failure(error):
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self.errorMessage = error.localizedDescription
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case let .success(response):
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guard let text = response.bodyText else {
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self.errorMessage = "Response had no body text"
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return
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}
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self.document = GeminiParser.parse(text: text, baseURL: url)
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}
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self.task = nil
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})
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task!.resume()
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}
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private func urlChanged(_ newValue: URL) {
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self.task = nil
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self.document = nil
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self.errorMessage = nil
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}
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}
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struct ContentView_Previews: PreviewProvider {
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static var previews: some View {
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ContentView(navigator: NavigationManager(url: URL(string: "gemini://localhost/overview.gmi")!))
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}
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}
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