Make OPML import and export respect multiple accounts

Mac/MainWindow/OPML/ImportOPMLWindowController.swift

@@ -0,0 +1,82 @@
+//
+//  ImportOPMLWindowController.swift
+//  NetNewsWire
+//
+//  Created by Maurice Parker on 5/1/19.
+//  Copyright © 2019 Ranchero Software. All rights reserved.
+//
+
+import AppKit
+import Account
+
+class ImportOPMLWindowController: NSWindowController {
+
+	@IBOutlet weak var accountPopUpButton: NSPopUpButton!
+	private weak var hostWindow: NSWindow?
+	
+	convenience init() {
+		self.init(windowNibName: NSNib.Name("ImportOPMLSheet"))
+	}
+	
+	override func windowDidLoad() {
+		
+		accountPopUpButton.removeAllItems()
+		let menu = NSMenu()
+		for oneAccount in AccountManager.shared.sortedAccounts {
+			let oneMenuItem = NSMenuItem()
+			oneMenuItem.title = oneAccount.nameForDisplay
+			oneMenuItem.representedObject = oneAccount
+			menu.addItem(oneMenuItem)
+		}
+		accountPopUpButton.menu = menu
+		
+	}
+	
+	// MARK: API
+	
+	func runSheetOnWindow(_ hostWindow: NSWindow) {
+		self.hostWindow = hostWindow
+		hostWindow.beginSheet(window!)
+	}
+	
+	// MARK: Actions
+	
+	@IBAction func cancel(_ sender: Any) {
+		hostWindow!.endSheet(window!, returnCode: NSApplication.ModalResponse.cancel)
+	}
+	
+	@IBAction func importOPML(_ sender: Any) {
+
+		guard let menuItem = accountPopUpButton.selectedItem else {
+			return
+		}
+		let account = menuItem.representedObject as! Account
+
+		hostWindow!.endSheet(window!, returnCode: NSApplication.ModalResponse.OK)
+		
+		let panel = NSOpenPanel()
+		panel.canDownloadUbiquitousContents = true
+		panel.canResolveUbiquitousConflicts = true
+		panel.canChooseFiles = true
+		panel.allowsMultipleSelection = false
+		panel.canChooseDirectories = false
+		panel.resolvesAliases = true
+		panel.allowedFileTypes = ["opml", "xml"]
+		panel.allowsOtherFileTypes = false
+		
+		panel.beginSheetModal(for: hostWindow!) { result in
+			if result == NSApplication.ModalResponse.OK, let url = panel.url {
+				DispatchQueue.main.async {
+					do {
+						try OPMLImporter.parseAndImport(fileURL: url, account: account)
+					}
+					catch let error as NSError {
+						NSApplication.shared.presentError(error)
+					}
+				}
+			}
+		}
+		
+	}
+
+}