Adds node for sending system notifications.

py/system_notification.py

@@ -0,0 +1,40 @@
+# Hack: string type that is always equal in not equal comparisons
+class AnyType(str):
+    def __ne__(self, __value: object) -> bool:
+        return False
+
+
+# Our any instance wants to be a wildcard string
+any = AnyType("*")
+
+
+class PlaySound:
+    @classmethod
+    def INPUT_TYPES(s):
+        return {"required": {
+            "any": (any, {}),
+            "mode": (["always", "on empty queue"], {}),
+        }}
+
+    FUNCTION = "nop"
+    INPUT_IS_LIST = True
+    OUTPUT_IS_LIST = (True,)
+    OUTPUT_NODE = True
+    RETURN_TYPES = (any,)
+
+    CATEGORY = "utils"
+
+    def IS_CHANGED(self, **kwargs):
+        return float("NaN")
+
+    def nop(self, any, mode):
+        return {"ui": {"a": []}, "result": (any,)}
+
+
+NODE_CLASS_MAPPINGS = {
+    "SystemNotification|pysssss": PlaySound,
+}
+
+NODE_DISPLAY_NAME_MAPPINGS = {
+    "SystemNotification|pysssss": "SystemNotification 🐍",
+}

web/js/systemNotification.js

@@ -0,0 +1,46 @@
+import { app } from "../../../scripts/app.js";
+
+const notificationSetup = () => {
+    if (!("Notification" in window)) {
+        console.log("This browser does not support notifications.");
+        alert("This browser does not support notifications.");
+        return;
+    }
+    if (Notification.permission === "denied") {
+        console.log("Notifications are blocked. Please enable them in your browser settings.");
+        alert("Notifications are blocked. Please enable them in your browser settings.");
+        return;
+    }
+    if (Notification.permission !== "granted") {
+        Notification.requestPermission()
+    }
+    return true;
+}
+
+app.registerExtension({
+    name: "pysssss.SystemNotification",
+    async beforeRegisterNodeDef(nodeType, nodeData, app) {
+        if (nodeData.name === "SystemNotification|pysssss") {
+            const onExecuted = nodeType.prototype.onExecuted;
+            nodeType.prototype.onExecuted = async function () {
+                onExecuted?.apply(this, arguments);
+                if (this.widgets[0].value === "on empty queue") {
+                    if (app.ui.lastQueueSize !== 0) {
+                        await new Promise((r) => setTimeout(r, 500));
+                    }
+                    if (app.ui.lastQueueSize !== 0) {
+                        return;
+                    }
+                }
+                if(!notificationSetup()) return;
+                const notification = new Notification("ComfyUI", { body: "Your notification has triggered." })
+            };
+
+            const onNodeCreated = nodeType.prototype.onNodeCreated;
+            nodeType.prototype.onNodeCreated = function () {
+                onNodeCreated?.apply(this, arguments);
+                notificationSetup();
+            }
+        }
+    },
+});