Refresh account expiration when window becomes visible

1 files changed, 28 insertions, 0 deletions

diff --git a/app/lib/app-visibility.js b/app/lib/app-visibility.js
new file mode 100644
index 0000000000..d599f6941b
--- /dev/null
+++ b/app/lib/app-visibility.js
@@ -0,0 +1,28 @@
+// @flow
+import { ipcRenderer } from 'electron';
+
+type EventHandler = (boolean) => any;
+
+export default class AppVisiblityObserver {
+  _handler: EventHandler;
+
+  constructor(handler: EventHandler) {
+    this._handler = handler;
+
+    ipcRenderer.on('show-window', this._handleShowEvent).on('hide-window', this._handleHideEvent);
+  }
+
+  dispose() {
+    ipcRenderer
+      .removeListener('show-window', this._handleShowEvent)
+      .removeListener('hide-window', this._handleHideEvent);
+  }
+
+  _handleShowEvent = (_event) => {
+    this._handler(true);
+  };
+
+  _handleHideEvent = (_event) => {
+    this._handler(false);
+  };
+}