Added the Yang GUI to GUI2

Change-Id: I843db3838668e21a77837faaf00d4d6834676d8d
diff --git a/apps/yang-gui/yang-gui2-lib/lib/yangdetails/yangdetails.component.ts b/apps/yang-gui/yang-gui2-lib/lib/yangdetails/yangdetails.component.ts
new file mode 100644
index 0000000..a7de139
--- /dev/null
+++ b/apps/yang-gui/yang-gui2-lib/lib/yangdetails/yangdetails.component.ts
@@ -0,0 +1,106 @@
+/*
+ * Copyright 2020-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {
+    Component,
+    Input,
+    OnInit,
+    OnDestroy,
+    OnChanges,
+    SimpleChanges
+} from '@angular/core';
+import {trigger, state, style, animate, transition} from '@angular/animations';
+import {
+    FnService,
+    IconService,
+    LogService,
+    DetailsPanelBaseImpl,
+    WebSocketService,
+} from 'gui2-fw-lib/public_api';
+
+@Component({
+    selector: 'onos-yangdetails',
+    templateUrl: './yangdetails.component.html',
+    styleUrls: [
+        './yangdetails.component.scss', './yangdetails.theme.scss',
+        '../../../../../web/gui2-fw-lib/lib/widget/panel.css',
+        '../../../../../web/gui2-fw-lib/lib/widget/panel-theme.css'
+    ],
+    animations: [
+        trigger('yangDetailsState', [
+            state('true', style({
+                transform: 'translateX(-100%)',
+                opacity: '100'
+            })),
+            state('false', style({
+                transform: 'translateX(0%)',
+                opacity: '0'
+            })),
+            transition('0 => 1', animate('100ms ease-in')),
+            transition('1 => 0', animate('100ms ease-out'))
+        ])
+    ]
+})
+export class YangDetailsComponent extends DetailsPanelBaseImpl implements OnInit, OnDestroy, OnChanges {
+    @Input() id: string;
+    @Input() modelId: string;
+    @Input() revision: string;
+
+    constructor(
+        protected fs: FnService,
+        protected log: LogService,
+        protected is: IconService,
+        protected wss: WebSocketService
+    ) {
+        super(fs, log, wss, 'yangModel');
+    }
+
+    ngOnInit() {
+        this.init();
+        this.log.debug('Yang Table Details Component initialized:', this.id);
+    }
+
+    /**
+     * Stop listening to alarmTableDetailsResponse on WebSocket
+     */
+    ngOnDestroy() {
+        this.destroy();
+        this.log.debug('Yang Table Details Component destroyed');
+    }
+
+    /**
+     * Details Panel Data Request on row selection changes
+     * Should be called whenever id changes
+     * If id is empty, no request is made
+     */
+    ngOnChanges(changes: SimpleChanges) {
+        console.log('Change happened', changes);
+        if (changes['id']) {
+            if (this.id === '') {
+                this.modelId = '';
+                this.revision = '';
+                return '';
+            } else {
+                const query = {
+                    'id': this.id,
+                    'modelId': this.modelId,
+                    'revision': this.revision
+                };
+                this.requestDetailsPanelData(query);
+            }
+        }
+    }
+}