Add notification system

2026-05-27 09:01:58 +00:00 · 2016-05-15 21:02:29 -07:00
parent 84e910c5cf
commit 4450b8b830
13 changed files with 241 additions and 59 deletions
@@ -0,0 +1,113 @@
+import ActionTypes from '../constants/ActionTypes';
+import AppDispatcher from '../dispatcher/AppDispatcher';
+import BaseStore from './BaseStore';
+import EventTypes from '../constants/EventTypes';
+
+const DEFAULT_DURATION = 5 * 1000;
+
+class NotificationStoreClass extends BaseStore {
+  constructor() {
+    super();
+
+    this.notifications = {};
+    this.accumulation = {};
+  }
+
+  accumulate(notification) {
+    let {id, value} = notification.accumulation;
+
+    if (this.accumulation[id] == null) {
+      this.accumulation[id] = value;
+    } else {
+      this.accumulation[id] += value;
+    }
+  }
+
+  add(notification) {
+    notification.duration = this.getDuration(notification);
+    notification.id = this.getID(notification);
+
+    if (notification.content == null) {
+      throw new Error('Notification content cannot be empty.');
+    }
+
+    if (!!notification.accumulation) {
+      this.accumulate(notification);
+    }
+
+    this.scheduleCleanse(notification);
+
+    this.notifications[notification.id] = {
+      content: this.getContent(notification)
+    };
+
+    this.emit(EventTypes.NOTIFICATIONS_CHANGE);
+  }
+
+  getContent(notification) {
+    if (!!notification.accumulation) {
+      return notification.content(this.accumulation[notification.accumulation.id]);
+    }
+
+    return notification.content;
+  }
+
+  getDuration(notification) {
+    return notification.duration || DEFAULT_DURATION;
+  }
+
+  getNotifications() {
+    let notificationIDs = Object.keys(this.notifications).sort();
+
+    return notificationIDs.map((id) => {
+      return this.notifications[id];
+    });
+  }
+
+  getID(notification) {
+    return notification.id || Date.now();
+  }
+
+  removeExpired(notification) {
+    let {accumulation} = notification;
+
+    if (!!accumulation) {
+      this.removeAccumulation(notification);
+
+      if (this.accumulation[accumulation.id] === 0) {
+        delete this.accumulation[accumulation.id];
+        delete this.notifications[notification.id];
+      }
+    } else {
+      delete this.notifications[notification.id];
+    }
+
+    this.emit(EventTypes.NOTIFICATIONS_CHANGE);
+  }
+
+  removeAccumulation(notification) {
+    let {id, value} = notification.accumulation;
+
+    if (this.accumulation[id] == null) {
+      return;
+    }
+
+    this.accumulation[id] -= value;
+  }
+
+  scheduleCleanse(notification) {
+    setTimeout(this.removeExpired.bind(this, notification),
+      notification.duration);
+  }
+}
+
+let NotificationStore = new NotificationStoreClass();
+
+NotificationStore.dispatcherID = AppDispatcher.register((payload) => {
+  // const {action, source} = payload;
+
+  // switch (action.type) {
+  // }
+});
+
+export default NotificationStore;