Mark incoming messages in current channel as read

but only if tab is focused. When tab gets focus, mark channel as read.

js/controller.js

@@ -207,3 +207,20 @@ function checkKeyPress(event) {
 	}
 	return false;
 }
+
+pubsub.subscribe("MESSAGES_NEW", post => {
+	if (!window.hasFocus) {
+		return;
+	}
+
+	const curChan = currentChannel();
+	if (post.endpoint === curChan.endpoint && post.channel_id === curChan.channel_id) {
+		mm_client.getOrCreate(post.endpoint).markChannelRead(post.channel_id);
+	}
+});
+
+pubsub.subscribe("WINDOW_FOCUSED", () => {
+	const curChan = currentChannel();
+	if (!curChan.channel_id) return;
+	mm_client.getOrCreate(curChan.endpoint).markChannelRead(curChan.channel_id);
+});

js/main.js

@@ -21,3 +21,12 @@ localstorage_credentials.getServers()
 	.forEach(mm_client.getOrCreate);
 
 populateChannelList();
+
+window.hasFocus = true;
+window.addEventListener("focus", _ => {
+	window.hasFocus = true;
+	pubsub.publish("WINDOW_FOCUSED");
+});
+window.addEventListener("blur", _ => {
+	window.hasFocus = false;
+});

js/pubsub.js

@@ -10,6 +10,7 @@ const topics = [
 	"CHANNEL_MEMBERS_NEW",
 	"CHANNEL_MEMBERS_REMOVED",
 	"CHANNEL_READ", // {endpoint, channel_id}
+	"WINDOW_FOCUSED",
 ];
 
 let subscribers = Object.create(null);