Fixed #1826 - Remove mitt event bus

package.json

@@ -45,7 +45,6 @@
     "gulp-rename": "^2.0.0",
     "gulp-uglify": "^3.0.2",
     "gulp-uglifycss": "^1.0.6",
-    "mitt": "^2.1.0",
     "primeflex": "2.0.0",
     "primeicons": "5.0.0",
     "prismjs": "^1.15.0",

src/components/confirmationeventbus/ConfirmationEventBus.js

@@ -0,0 +1,3 @@
+import EventBus from '../utils/EventBus';
+
+export default EventBus();

src/components/confirmationeventbus/index.d.ts

@@ -0,0 +1 @@
+export * from './ConfirmationEventBus';

src/components/confirmationeventbus/index.js

@@ -0,0 +1,2 @@
+'use strict';
+module.exports = require('./ConfirmationEventBus.js');

src/components/confirmationservice/ConfirmationService.js

@@ -1,4 +1,4 @@
-import ConfirmationEventBus from './ConfirmationEventBus';
+import ConfirmationEventBus from '../confirmationeventbus/ConfirmationEventBus';
 
 const ConfirmationService = {
     install: (Vue) => {

src/components/confirmdialog/ConfirmDialog.vue

@@ -10,7 +10,7 @@
 </template>
 
 <script>
-import ConfirmationEventBus from '../confirmationservice/ConfirmationEventBus';
+import ConfirmationEventBus from '../confirmationeventbus/ConfirmationEventBus';
 import Dialog from '../dialog/Dialog';
 import Button from '../button/Button';
 import DomHandler from '../utils/DomHandler';

src/components/confirmpopup/ConfirmPopup.vue

@@ -17,7 +17,7 @@
 </template>
 
 <script>
-import ConfirmationEventBus from '../confirmationservice/ConfirmationEventBus';
+import ConfirmationEventBus from '../confirmationeventbus/ConfirmationEventBus';
 import ConnectedOverlayScrollHandler from '../utils/ConnectedOverlayScrollHandler';
 import DomHandler from '../utils/DomHandler';
 import Button from '../button/Button';

src/components/utils/EventBus.js

@@ -0,0 +1,29 @@
+export default function () {
+	const allHandlers = new Map();
+
+	return {
+		on(type, handler) {
+			let handlers = allHandlers.get(type);
+            if (!handlers)
+                handlers = [handler];
+            else
+                handlers.push(handler);
+
+            allHandlers.set(type, handlers);
+		},
+
+		off(type, handler) {
+			let handlers = allHandlers.get(type);
+			if (handlers) {
+				handlers.splice(handlers.indexOf(handler) >>> 0, 1);
+			}
+		},
+
+		emit(type, evt) {
+            let handlers = allHandlers.get(type);
+            if (handlers) {
+                handlers.slice().map((handler) => { handler(evt);});
+            }
+		}
+	};
+}

src/views/confirmdialog/ConfirmDialogDoc.vue

@@ -2,12 +2,6 @@
 	<div class="content-section documentation">
 		<TabView>
 			<TabPanel header="Documentation">
-                <h5>Mitt EventBus</h5>
-                <p>ConfirmDialog requires <a href="https://www.npmjs.com/package/mitt">Mitt</a>, a tiny 200b EventBus implementation.</p>
-<CodeHighlight>
-npm install mitt --save
-</CodeHighlight>
-
                 <h5>ConfirmationService</h5>
                 <p>ConfirmDialog is controlled via the <i>ConfirmationService</i> that needs to be installed globally before the application
                     instance is created.</p>
@@ -212,7 +206,7 @@ export default {
 				</div>
 
 				<h5>Dependencies</h5>
-				<p>Mitt.</p>
+				<p>None.</p>
 			</TabPanel>
 
 			<TabPanel header="Source">

src/views/confirmpopup/ConfirmPopupDoc.vue

@@ -2,12 +2,6 @@
 	<div class="content-section documentation">
 		<TabView>
 			<TabPanel header="Documentation">
-                <h5>Mitt EventBus</h5>
-                <p>ConfirmPopup requires <a href="https://www.npmjs.com/package/mitt">Mitt</a>, a tiny 200b EventBus implementation.</p>
-<CodeHighlight>
-npm install mitt --save
-</CodeHighlight>
-
                 <h5>ConfirmationService</h5>
                 <p>ConfirmPopup is controlled via the <i>ConfirmationService</i> that needs to be installed globally before the application
                     instance is created.</p>
@@ -226,7 +220,7 @@ export default {
 				</div>
 
 				<h5>Dependencies</h5>
-				<p>Mitt.</p>
+				<p>None.</p>
 			</TabPanel>
 
 			<TabPanel header="Source">