NetNewsWire/iOS/Article/ArticleIconSchemeHandler.swift

61 lines
1.6 KiB
Swift

//
// ArticleIconSchemeHandler.swift
// NetNewsWire-iOS
//
// Created by Maurice Parker on 1/27/20.
// Copyright © 2020 Ranchero Software. All rights reserved.
//
import Foundation
import WebKit
import Articles
class ArticleIconSchemeHandler: NSObject, WKURLSchemeHandler {
weak var coordinator: SceneCoordinator?
init(coordinator: SceneCoordinator) {
self.coordinator = coordinator
}
func webView(_ webView: WKWebView, start urlSchemeTask: WKURLSchemeTask) {
guard let url = urlSchemeTask.request.url, let coordinator = coordinator else {
urlSchemeTask.didFailWithError(URLError(.fileDoesNotExist))
return
}
guard let components = URLComponents(url: url, resolvingAgainstBaseURL: false) else {
return
}
let articleID = components.path
guard let iconImage = coordinator.articleFor(articleID)?.iconImage() else {
urlSchemeTask.didFailWithError(URLError(.fileDoesNotExist))
return
}
let iconView = IconView(frame: CGRect(x: 0, y: 0, width: 48, height: 48))
iconView.iconImage = iconImage
let renderedImage = iconView.asImage()
guard let data = renderedImage.dataRepresentation() else {
urlSchemeTask.didFailWithError(URLError(.fileDoesNotExist))
return
}
let headerFields = ["Cache-Control": "no-cache"]
if let response = HTTPURLResponse(url: url, statusCode: 200, httpVersion: nil, headerFields: headerFields) {
urlSchemeTask.didReceive(response)
urlSchemeTask.didReceive(data)
urlSchemeTask.didFinish()
}
}
func webView(_ webView: WKWebView, stop urlSchemeTask: WKURLSchemeTask) {
urlSchemeTask.didFailWithError(URLError(.unknown))
}
}