tech(): put in a real event emitter instead of rxjs based on that was broken

CHANGELOG.md

-# 3.0.0-beta3 (unreleased)
-
-### Bug fixes
-* **Postgres**: Fixed page render crash when using postgres, fixes [#4558](https://github.com/grafana/grafana/issues/4558)
-* **Table panel**: Fixed table panel bug when trying to show annotations in table panel, fixes [#4563](https://github.com/grafana/grafana/issues/4563)
-* **App Config**: Fixed app config issue showing content of other app config, fixes [#4575](https://github.com/grafana/grafana/issues/4575)
-* **Graph Panel**: Fixed legend option max not updating, fixes [#4601](https://github.com/grafana/grafana/issues/4601)
-* **Graph Panel**: Fixed issue where newly added graph panels shared same axes config, fixes [#4582](https://github.com/grafana/grafana/issues/4582)
-
-# 3.0.0-beta2 (2016-04-04)
+# 3.0.0-beta2 (unreleased)
 
 ### New Features (introduces since 3.0-beta1)
 * **Preferences**: Set home dashboard on user and org level, closes [#1678](https://github.com/grafana/grafana/issues/1678)
@@ -18,9 +9,8 @@
 * **Dashboard**: Fixed dashboard panel layout for mobile devices, fixes [#4529](https://github.com/grafana/grafana/issues/4529)
 * **Table Panel**: Fixed issue with table panel sort, fixes [#4532](https://github.com/grafana/grafana/issues/4532)
 * **Page Load Crash**: A Datasource with null jsonData would make Grafana fail to load page, fixes [#4536](https://github.com/grafana/grafana/issues/4536)
-* **Metrics tab**: Fix for missing datasource name in datasource selector, fixes [#4540](https://github.com/grafana/grafana/issues/4540)
+* **Metrics tab**: Fix for missing datasource name in datasource selector, fixes [#4541](https://github.com/grafana/grafana/issues/4540)
 * **Graph**: Fix legend in table mode with series on right-y axis, fixes [#4551](https://github.com/grafana/grafana/issues/4551), [#1145](https://github.com/grafana/grafana/issues/1145)
-* **Password**: Password reset link/page did not work, fixes [#4542](https://github.com/grafana/grafana/issues/4542)
 
 # 3.0.0-beta1 (2016-03-31)
 

package.json

@@ -67,6 +67,7 @@
   },
   "license": "Apache-2.0",
   "dependencies": {
+    "eventemitter3": "^1.2.0",
     "grunt-jscs": "~1.5.x",
     "grunt-sass-lint": "^0.1.0",
     "grunt-sync": "^0.4.1",

public/app/core/utils/emitter.ts

 ///<reference path="../../headers/common.d.ts" />
 
-import {Subject} from 'vendor/npm/rxjs/Subject';
+import EventEmitter from 'eventemitter3';
 
 var hasOwnProp = {}.hasOwnProperty;
 
@@ -9,48 +9,27 @@ function createName(name) {
 }
 
 export class Emitter {
-  subjects: any;
+  emitter: any;
 
   constructor() {
-    this.subjects = {};
+    this.emitter = new EventEmitter();
   }
 
   emit(name, data?) {
-    var fnName = createName(name);
-    this.subjects[fnName] || (this.subjects[fnName] = new Subject());
-    this.subjects[fnName].next(data);
+    this.emitter.emit(name, data);
   }
 
   on(name, handler, scope?) {
-    var fnName = createName(name);
-    this.subjects[fnName] || (this.subjects[fnName] = new Subject());
-    var subscription = this.subjects[fnName].subscribe(handler);
+    this.emitter.on(name, handler);
 
     if (scope) {
       scope.$on('$destroy', function() {
-        subscription.unsubscribe();
+        this.emitter.off(name, handler);
       });
     }
-
-    return subscription;
-  };
-
-  off(name, handler) {
-    var fnName = createName(name);
-    if (this.subjects[fnName]) {
-      this.subjects[fnName].dispose();
-      delete this.subjects[fnName];
-    }
   }
 
-  dispose() {
-    var subjects = this.subjects;
-    for (var prop in subjects) {
-      if (hasOwnProp.call(subjects, prop)) {
-        subjects[prop].dispose();
-      }
-    }
-
-    this.subjects = {};
+  off(name, handler) {
+    this.emitter.off(name, handler);
   }
 }

public/app/headers/common.d.ts

@@ -47,3 +47,8 @@ declare module 'tether-drop' {
   var config: any;
   export default config;
 }
+
+declare module 'eventemitter3' {
+  var config: any;
+  export default config;
+}

public/app/system.conf.js

@@ -4,6 +4,7 @@ System.config({
   paths: {
     'remarkable': 'vendor/npm/remarkable/dist/remarkable.js',
     'tether': 'vendor/npm/tether/dist/js/tether.js',
+    'eventemitter3': 'vendor/npm/eventemitter3/index.js',
     'tether-drop': 'vendor/npm/tether-drop/dist/js/drop.js',
     'moment': 'vendor/moment.js',
     "jquery": "vendor/jquery/dist/jquery.js",
@@ -55,5 +56,9 @@ System.config({
       deps: ['jquery'],
       exports: 'angular',
     },
+    'vendor/npm/eventemitter3/index.js': {
+      format: 'cjs',
+      exports: 'EventEmitter'
+    },
   }
 });

public/sass/utils/_utils.scss

@@ -52,6 +52,7 @@ button.close {
 .pull-right {
   float: right !important;
 }
+
 .pull-left {
   float: left !important;
 }

public/test/core/utils/emitter_specs.ts

@@ -24,12 +24,12 @@ describe("Emitter", () => {
       expect(sub2Called).to.be(true);
     });
 
-    it('should handle errors', () => {
+    it.only('should handle errors', () => {
       var events = new Emitter();
       var sub1Called = 0;
       var sub2Called = 0;
 
-      var sub1 = events.on('test', () => {
+      events.on('test', () => {
         sub1Called++;
         throw "hello";
       });
@@ -41,8 +41,8 @@ describe("Emitter", () => {
       try { events.emit('test', null); } catch (_) { }
       try { events.emit('test', null); } catch (_) {}
 
-      expect(sub1Called).to.be(1);
-      expect(sub2Called).to.be(1);
+      expect(sub1Called).to.be(2);
+      expect(sub2Called).to.be(0);
     });
   });
 });

public/test/test-main.js

@@ -10,6 +10,7 @@
     baseURL: '/base/',
     defaultJSExtensions: true,
     paths: {
+      'eventemitter3': 'vendor/npm/eventemitter3/index.js',
       'tether': 'vendor/npm/tether/dist/js/tether.js',
       'tether-drop': 'vendor/npm/tether-drop/dist/js/drop.js',
       'moment': 'vendor/moment.js',
@@ -58,7 +59,11 @@
       'vendor/angular-mocks/angular-mocks.js': {
         format: 'global',
         deps: ['angular'],
-      }
+      },
+      'vendor/npm/eventemitter3/index.js': {
+        format: 'cjs',
+        exports: 'EventEmitter'
+      },
     }
   });
 

tasks/options/copy.js

@@ -19,10 +19,7 @@ module.exports = function(config) {
       cwd: './node_modules',
       expand: true,
       src: [
-        'angular2/bundles/*.js',
-        'angular2/*.d.ts',
-        'angular2/typings/**/*',
-        'angular2/manual_typings/**/*',
+        'eventemitter3/*.js',
         'systemjs/dist/*.js',
         'es6-promise/**/*',
         'es6-shim/*.js',