Move media type checking to receiver selectors

app/NativeMacReceiverSelector/ViewController.swift

@@ -119,6 +119,12 @@ class ViewController : NSViewController {
 
             receiverView.receiverViewDelegate = self
 
+            if UInt(initData!.availableMediaTypes) == 0
+                    || (initData!.availableMediaTypes
+                            & initData!.defaultMediaType.rawValue) == 0 {
+                receiverView.isEnabled = false
+            }
+
 
             self.receiverViews.append(receiverView)
 
@@ -146,6 +152,12 @@ extension ViewController : NSMenuDelegate {
         let mediaType = MediaType(
                 rawValue: self.mediaTypePopUpButton.selectedItem!.tag)!
 
+        if self.initData.availableMediaTypes & mediaType.rawValue != 0 {
+            for receiverView in self.receiverViews {
+                receiverView.isEnabled = true
+            }
+        }
+
         let fileItem = self.mediaTypePopUpButton
                 .item(at: self.mediaTypePopUpButton.indexOfItem(
                         withTag: MediaType.file.rawValue))!

ext/src/background/receiverSelector/ReceiverSelectorManager.ts

@@ -97,14 +97,6 @@ async function getSelection (
             availableMediaTypes &= ~ReceiverSelectorMediaType.File;
         }
 
-        if (!availableMediaTypes || availableMediaTypes
-                === ReceiverSelectorMediaType.File) {
-            console.error("fx_cast (Debug): No available media types");
-            resolve(null);
-
-            return;
-        }
-
 
         // Ensure status manager is initialized
         await StatusManager.init();

ext/src/ui/popup/index.tsx

@@ -109,6 +109,9 @@ class PopupApp extends Component<{}, PopupAppState> {
         }
 
 
+        const canCast = !!(this.state.availableMediaTypes
+                && this.state.availableMediaTypes & this.state.mediaType);
+
         return (
             <div>
                 <div className="media-select">
@@ -150,6 +153,7 @@ class PopupApp extends Component<{}, PopupAppState> {
                         <ReceiverEntry receiver={ receiver }
                                        onCast={ this.onCast }
                                        isLoading={ this.state.isLoading }
+                                       canCast={ canCast }
                                        key={ i }/> ))}
                 </ul>
             </div>
@@ -208,6 +212,7 @@ class PopupApp extends Component<{}, PopupAppState> {
 interface ReceiverEntryProps {
     receiver: Receiver;
     isLoading: boolean;
+    canCast: boolean;
     onCast (receiver: Receiver): void;
 }
 
@@ -244,7 +249,7 @@ class ReceiverEntry extends Component<ReceiverEntryProps, ReceiverEntryState> {
                 </div>
                 <button className="receiver-connect"
                         onClick={ this.handleCast }
-                        disabled={this.props.isLoading}>
+                        disabled={this.props.isLoading || !this.props.canCast}>
                     { this.state.isLoading
                         ? _("popupCastingButtonTitle"
                               , (this.state.isLoading