refactor: unfilter unresponsive events (#44667)

refactor: unfilter unresponsive events (#44629)

* feat: internal -unresponsive event

* Reland "refactor: JSify BrowserWindow unresponsive handling"

This reverts commit ef7ae78ed4.

* fix: emit unresponsive if close not prevented

---------

lib/browser/api/browser-window.ts

@@ -37,6 +37,33 @@ BrowserWindow.prototype._init = function (this: BWT) {
     app.emit('browser-window-focus', event, this);
   });
 
+  let unresponsiveEvent: NodeJS.Timeout | null = null;
+  const emitUnresponsiveEvent = () => {
+    unresponsiveEvent = null;
+    if (!this.isDestroyed() && this.isEnabled()) { this.emit('unresponsive'); }
+  };
+  this.webContents.on('unresponsive', () => {
+    if (!unresponsiveEvent) { unresponsiveEvent = setTimeout(emitUnresponsiveEvent, 50); }
+  });
+  this.webContents.on('responsive', () => {
+    if (unresponsiveEvent) {
+      clearTimeout(unresponsiveEvent);
+      unresponsiveEvent = null;
+    }
+    this.emit('responsive');
+  });
+  this.on('close', (event) => {
+    queueMicrotask(() => {
+      if (!unresponsiveEvent && !event.defaultPrevented) {
+        unresponsiveEvent = setTimeout(emitUnresponsiveEvent, 5000);
+      }
+    });
+  });
+  this.webContents.on('destroyed', () => {
+    if (unresponsiveEvent) clearTimeout(unresponsiveEvent);
+    unresponsiveEvent = null;
+  });
+
   // Subscribe to visibilityState changes and pass to renderer process.
   let isVisible = this.isVisible() && !this.isMinimized();
   const visibilityChanged = () => {

lib/browser/api/web-contents.ts

@@ -909,6 +909,13 @@ WebContents.prototype._init = function () {
     openDialogs.clear();
   });
 
+  this.on('-unresponsive' as any, (event: Electron.Event<any>) => {
+    const shouldEmit = !event.shouldIgnore && event.visible && event.rendererInitialized;
+    if (shouldEmit) {
+      this.emit('unresponsive', event);
+    }
+  });
+
   app.emit('web-contents-created', { sender: this, preventDefault () {}, get defaultPrevented () { return false; } }, this);
 
   // Properties