Fix enabling and disabling push notifications.

client/components/Windows/Settings.vue

@@ -264,8 +264,9 @@
 							id="pushNotifications"
 							type="button"
 							class="btn"
-							disabled
+							:disabled="$root.pushNotificationState !== 'supported'"
 							data-text-alternate="Unsubscribe from push notifications"
+							@click="onPushButtonClick"
 						>Subscribe to push notifications</button>
 						<div
 							v-if="$root.pushNotificationState === 'nohttps'"
@@ -533,6 +534,10 @@ export default {
 		if (window.navigator.registerProtocolHandler) {
 			this.canRegisterProtocol = true;
 		}
+
+		// TODO: Rework push notification code to avoid reinitializing it here
+		const webpush = require("../../js/webpush");
+		webpush.initialize();
 	},
 	methods: {
 		onChange(event) {
@@ -603,6 +608,10 @@ export default {
 			pop.src = "audio/pop.wav";
 			pop.play();
 		},
+		onPushButtonClick() {
+			const webpush = require("../../js/webpush"); // TODO: do this in a smarter way
+			webpush.onPushButton();
+		},
 	},
 };
 </script>

client/js/webpush.js

@@ -67,13 +67,16 @@ module.exports.initialize = () => {
 						alternatePushButton();
 					}
 				});
-		}).catch(() => {
+			})
-			vueApp.pushNotificationState = "unsupported";
+			.catch(() => {
-		});
+				vueApp.pushNotificationState = "unsupported";
+			});
 	}
 };
 
-function onPushButton() {
+module.exports.onPushButton = () => {
+	// TODO: move dom logic to Settings.vue
+	pushNotificationsButton = $("#pushNotifications");
 	pushNotificationsButton.prop("disabled", true);
 
 	navigator.serviceWorker.ready
@@ -127,7 +130,7 @@ function onPushButton() {
 		});
 
 	return false;
-}
+};
 
 function alternatePushButton() {
 	const text = pushNotificationsButton.text();