Implement initial NativeMacReceiverSelector

app/NativeMacReceiverSelector/ViewController.swift

@@ -0,0 +1,152 @@
+import Cocoa
+import Foundation
+
+
+func makeLabel(_ text: String,
+               size: CGFloat = 0,
+               color: NSColor = NSColor.textColor) -> NSTextField {
+
+    let textField = NSTextField()
+    textField.stringValue = text
+    textField.backgroundColor = .clear
+    textField.isEditable = false
+    textField.isBezeled = false
+    textField.sizeToFit()
+
+    // Text
+    textField.font = NSFont.systemFont(ofSize: size)
+    textField.textColor = color
+
+    return textField
+}
+
+
+struct InitData: Codable {
+    let receivers: [Receiver]
+    let defaultMediaType: MediaType
+
+    let i18n_mediaTypeApp: String
+    let i18n_mediaTypeTab: String
+    let i18n_mediaTypeScreen: String
+}
+
+struct ReceiverSelection: Codable {
+    let receiver: Receiver
+    let mediaType: MediaType
+}
+
+enum MediaType: Int, Codable {
+    case app
+    case tab
+    case screen
+}
+
+struct Receiver: Codable {
+    let friendlyName: String
+    let host: String
+    let id: String
+    let port: Int
+}
+
+
+class ViewController: NSViewController {
+    var mediaTypePopUpButton: NSPopUpButton!
+
+    override func loadView () {
+        let visualEffectView = NSVisualEffectView()
+        visualEffectView.blendingMode = .behindWindow
+        visualEffectView.state = .active
+
+        self.view = visualEffectView
+    }
+
+    override func viewDidLoad () {
+        super.viewDidLoad()
+
+        if (CommandLine.argc < 2) {
+            fputs("Error: Not enough args\n", stderr)
+            exit(1)
+        }
+
+        guard let data = CommandLine.arguments[1].data(using: .utf8) else {
+            fputs("Error: Failed to convert input to data\n", stderr)
+            exit(1)
+        }
+
+
+        let initData: InitData!
+
+        do {
+            initData = try JSONDecoder().decode(InitData.self, from: data)
+        } catch {
+            fputs("Error: Failed to parse input data\n", stderr)
+            exit(1)
+        }
+
+
+        let stackView = NSStackView()
+        stackView.orientation = .vertical
+        stackView.alignment = .leading
+        stackView.autoresizingMask = [ .width, .height ]
+        stackView.edgeInsets = NSEdgeInsetsMake(8, 8, 8, 8)
+
+
+        self.mediaTypePopUpButton = NSPopUpButton()
+        self.mediaTypePopUpButton.addItems(withTitles: [
+            initData.i18n_mediaTypeApp
+          , initData.i18n_mediaTypeTab
+          , initData.i18n_mediaTypeScreen
+        ])
+
+        self.mediaTypePopUpButton.selectItem(at: initData.defaultMediaType.rawValue)
+
+        let mediaTypeStackView = NSStackView(views: [
+            makeLabel("Cast"),
+            self.mediaTypePopUpButton,
+            makeLabel("to:")
+        ])
+
+
+        stackView.addArrangedSubview(mediaTypeStackView)
+
+
+        for receiver in initData.receivers {
+            let receiverSeparator = NSBox()
+            receiverSeparator.boxType = .separator
+
+            let receiverView = ReceiverView(receiver: receiver)
+            receiverView.receiverViewDelegate = self
+
+            stackView.addArrangedSubview(receiverSeparator)
+            stackView.addArrangedSubview(receiverView)
+        }
+
+
+        self.view.addSubview(stackView)
+        self.view.autoresizesSubviews = true
+        self.view.frame.size.width = 350
+    }
+}
+
+
+extension ViewController: ReceiverViewDelegate {
+    func didCast (_ receiver: Receiver) {
+        do {
+            let mediaType = MediaType(
+                    rawValue: self.mediaTypePopUpButton.indexOfSelectedItem)!
+
+            let selection = ReceiverSelection(
+                    receiver: receiver
+                  , mediaType: mediaType)
+
+            let jsonData = try JSONEncoder().encode(selection)
+            let jsonString = String(data: jsonData, encoding: .utf8)
+
+            print(jsonString!)
+            fflush(stdout)
+        } catch {
+            fputs("Error: Failed to encode output data", stderr)
+            exit(1)
+        }
+    }
+}