Add missing i18n to native macOS receiver selector and refactor

ext/src/_locales/en/messages.json

@@ -21,10 +21,10 @@
   , "popupMediaSelectToLabel": {
         "message": "to:"
     }
-  , "popupCastButtonLabel": {
+  , "popupCastButtonTitle": {
         "message": "Cast"
     }
-  , "popupCastingButtonLabel": {
+  , "popupCastingButtonTitle": {
         "message": "Casting"
     }
 

ext/src/_locales/nl/messages.json

@@ -6,10 +6,10 @@
         "message": ""
     }
 
-  , "popupCastButtonLabel": {
+  , "popupCastButtonTitle": {
         "message": "Casten"
     }
-  , "popupCastingButtonLabel": {
+  , "popupCastingButtonTitle": {
         "message": "Aan het casten"
     }
 

ext/src/receiverSelectorManager/selectorManagers/NativeMacReceiverSelectorManager.ts

@@ -60,6 +60,9 @@ export default class NativeMacReceiverSelectorManager
           , data: JSON.stringify({
                 receivers
               , defaultMediaType
+
+              , i18n_extensionName: _("extensionName")
+              , i18n_castButtonTitle: _("popupCastButtonTitle")
               , i18n_mediaTypeApp: _("popupMediaTypeApp")
               , i18n_mediaTypeTab: _("popupMediaTypeTab")
               , i18n_mediaTypeScreen: _("popupMediaTypeScreen")

ext/src/ui/popup/index.tsx

@@ -187,11 +187,11 @@ class ReceiverEntry extends Component<ReceiverEntryProps, ReceiverEntryState> {
                         onClick={ this.handleCast }
                         disabled={this.props.isLoading}>
                     { this.state.isLoading
-                        ? _("popupCastingButtonLabel") +
+                        ? _("popupCastingButtonTitle") +
                             (this.state.isLoading
                                 ? this.state.ellipsis
                                 : "")
-                        : _("popupCastButtonLabel") }
+                        : _("popupCastButtonTitle") }
                 </button>
             </li>
         );