UI: Added filter widget type

@@ -248,11 +248,14 @@
                           headerHeightPx="120"
                           [isReadOnly]="true"
                           [isEdit]="false"
-                          [showBackStateIcon]="!!widgetsBundle?.title"
-                          (closeDetails)="onAddWidgetClosed()"
-                          (backStateDetails)="widgetBundleSelected(null)">
+                          (closeDetails)="onAddWidgetClosed()">
+          <div class="prefix-title-buttons" [fxHide]="!widgetsBundle?.title" style="height: 28px; margin-right: 12px">
+            <button class="tb-mat-28" mat-icon-button type="button" (click)="widgetBundleSelected(null)">
+              <mat-icon>arrow_back</mat-icon>
+            </button>
+          </div>
           <div class="header-pane" *ngIf="isAddingWidget">
-            <div fxLayout="row">
+            <div fxLayout="row" fxLayoutGap="12px">
               <tb-widgets-bundle-search fxFlex
                                         [(ngModel)]="searchBundle"
                                         placeholder="{{ (!widgetsBundle?.title ? 'widgets-bundle.search' : 'widget.search') | translate }}"
@@ -260,10 +263,21 @@
               </tb-widgets-bundle-search>
             </div>
           </div>
+          <div class="details-buttons" *ngIf="isAddingWidget">
+            <button mat-button mat-icon-button type="button"
+                    *ngIf="widgetTypes.length > 1"
+                    (click)="editWidgetsTypesToDisplay($event)"
+                    matTooltip="{{ 'widget.filter' | translate }}"
+                    matTooltipPosition="above">
+              <mat-icon>filter_list</mat-icon>
+            </button>
+          </div>
           <tb-dashboard-widget-select *ngIf="isAddingWidget"
                                       [aliasController]="dashboardCtx.aliasController"
                                       [widgetsBundle]="widgetsBundle"
                                       [searchBundle]="searchBundle"
+                                      [filterWidgetTypes]="filterWidgetTypes"
+                                      (widgetsTypes)="updateWidgetsTypes($event)"
                                       (widgetsBundleSelected)="widgetBundleSelected($event)"
                                       (widgetSelected)="addWidgetFromType($event)">
           </tb-dashboard-widget-select>

@@ -18,11 +18,14 @@ import {
   ChangeDetectorRef,
   Component,
   Inject,
+  Injector,
   Input,
   NgZone,
   OnDestroy,
   OnInit,
+  StaticProvider,
   ViewChild,
+  ViewContainerRef,
   ViewEncapsulation
 } from '@angular/core';
 import { PageComponent } from '@shared/components/page.component';
@@ -58,7 +61,14 @@ import { BreakpointObserver, BreakpointState } from '@angular/cdk/layout';
 import { MediaBreakpoints } from '@shared/models/constants';
 import { AuthUser } from '@shared/models/user.model';
 import { getCurrentAuthState } from '@core/auth/auth.selectors';
-import { Widget, WidgetConfig, WidgetInfo, WidgetPosition, widgetTypesData } from '@app/shared/models/widget.models';
+import {
+  Widget,
+  WidgetConfig,
+  WidgetInfo,
+  WidgetPosition,
+  widgetType,
+  widgetTypesData
+} from '@shared/models/widget.models';
 import { environment as env } from '@env/environment';
 import { Authority } from '@shared/models/authority.enum';
 import { DialogService } from '@core/services/dialog.service';
@@ -80,7 +90,10 @@ import {
 import { EntityAliases } from '@app/shared/models/alias.models';
 import { EditWidgetComponent } from '@home/components/dashboard-page/edit-widget.component';
 import { WidgetsBundle } from '@shared/models/widgets-bundle.model';
-import { AddWidgetDialogComponent, AddWidgetDialogData } from '@home/components/dashboard-page/add-widget-dialog.component';
+import {
+  AddWidgetDialogComponent,
+  AddWidgetDialogData
+} from '@home/components/dashboard-page/add-widget-dialog.component';
 import { TranslateService } from '@ngx-translate/core';
 import {
   ManageDashboardLayoutsDialogComponent,
@@ -99,6 +112,14 @@ import { ImportExportService } from '@home/components/import-export/import-expor
 import { AuthState } from '@app/core/auth/auth.models';
 import { FiltersDialogComponent, FiltersDialogData } from '@home/components/filter/filters-dialog.component';
 import { Filters } from '@shared/models/query/query.models';
+import { ConnectedPosition, Overlay, OverlayConfig, OverlayRef } from '@angular/cdk/overlay';
+import { ComponentPortal } from '@angular/cdk/portal';
+import {
+  DISPLAY_WIDGET_TYPES_PANEL_DATA,
+  DisplayWidgetTypesPanelComponent,
+  DisplayWidgetTypesPanelData,
+  WidgetTypes
+} from '@home/components/dashboard-page/widget-types-panel.component';
 
 // @dynamic
 @Component({
@@ -147,6 +168,8 @@ export class DashboardPageComponent extends PageComponent implements IDashboardC
   isAddingWidgetClosed = true;
   widgetsBundle: WidgetsBundle = null;
   searchBundle = '';
+  widgetTypes: WidgetTypes[] = [];
+  filterWidgetTypes: widgetType[] = null;
 
   isToolbarOpened = false;
   isToolbarOpenedAnimate = false;
@@ -261,6 +284,8 @@ export class DashboardPageComponent extends PageComponent implements IDashboardC
               private dialog: MatDialog,
               private translate: TranslateService,
               private ngZone: NgZone,
+              private overlay: Overlay,
+              private viewContainerRef: ViewContainerRef,
               private cd: ChangeDetectorRef) {
     super(store);
 
@@ -1121,6 +1146,55 @@ export class DashboardPageComponent extends PageComponent implements IDashboardC
 
   widgetBundleSelected(bundle: WidgetsBundle){
     this.widgetsBundle = bundle;
+    this.widgetTypes = [];
     this.searchBundle = '';
   }
+
+  updateWidgetsTypes(types: Set<widgetType>) {
+    this.widgetTypes = Array.from(types.values()).map(type => {
+      return {type, display: true};
+    });
+  }
+
+  editWidgetsTypesToDisplay($event: Event) {
+    if ($event) {
+      $event.stopPropagation();
+    }
+    const target = $event.target || $event.currentTarget;
+    const config = new OverlayConfig();
+    config.backdropClass = 'cdk-overlay-transparent-backdrop';
+    config.hasBackdrop = true;
+    const connectedPosition: ConnectedPosition = {
+      originX: 'end',
+      originY: 'bottom',
+      overlayX: 'end',
+      overlayY: 'top'
+    };
+    config.positionStrategy = this.overlay.position().flexibleConnectedTo(target as HTMLElement)
+      .withPositions([connectedPosition]);
+
+    const overlayRef = this.overlay.create(config);
+    overlayRef.backdropClick().subscribe(() => {
+      overlayRef.dispose();
+    });
+
+    const providers: StaticProvider[] = [
+      {
+        provide: DISPLAY_WIDGET_TYPES_PANEL_DATA,
+        useValue: {
+          types: this.widgetTypes,
+          typesUpdated: (newTypes) => {
+            this.filterWidgetTypes = newTypes.filter(type => type.display).map(type => type.type);
+          }
+        } as DisplayWidgetTypesPanelData
+      },
+      {
+        provide: OverlayRef,
+        useValue: overlayRef
+      }
+    ];
+    const injector = Injector.create({parent: this.viewContainerRef.injector, providers});
+    overlayRef.attach(new ComponentPortal(DisplayWidgetTypesPanelComponent, this.viewContainerRef, injector));
+    this.cd.detectChanges();
+  }
 }

@@ -19,10 +19,10 @@ import { WidgetsBundle } from '@shared/models/widgets-bundle.model';
 import { IAliasController } from '@core/api/widget-api.models';
 import { NULL_UUID } from '@shared/models/id/has-uuid';
 import { WidgetService } from '@core/http/widget.service';
-import { WidgetInfo } from '@shared/models/widget.models';
+import { WidgetInfo, widgetType } from '@shared/models/widget.models';
 import { toWidgetInfo } from '@home/models/widget-component.models';
-import { distinctUntilChanged, map, publishReplay, refCount, switchMap } from 'rxjs/operators';
-import { BehaviorSubject, Observable, of } from 'rxjs';
+import { distinctUntilChanged, map, publishReplay, refCount, switchMap, tap } from 'rxjs/operators';
+import { BehaviorSubject, combineLatest, Observable, of } from 'rxjs';
 import { DomSanitizer, SafeUrl } from '@angular/platform-browser';
 import { isDefinedAndNotNull } from '@core/utils';
 
@@ -34,15 +34,20 @@ import { isDefinedAndNotNull } from '@core/utils';
 export class DashboardWidgetSelectComponent implements OnInit {
 
   private search$ = new BehaviorSubject<string>('');
-  private widgetsTypes: Observable<Array<WidgetInfo>>;
+  private filterWidgetTypes$ = new BehaviorSubject<Array<widgetType>>(null);
+  private widgetsInfo: Observable<Array<WidgetInfo>>;
   private widgetsBundleValue: WidgetsBundle;
+  private widgetsType = new Set<widgetType>();
 
   widgets$: Observable<Array<WidgetInfo>>;
   widgetsBundles$: Observable<Array<WidgetsBundle>>;
 
   @Input()
   set widgetsBundle(widgetBundle: WidgetsBundle) {
-    this.widgetsTypes = null;
+    this.widgetsInfo = null;
+    this.widgetsType.clear();
+    this.widgetsTypes.emit(this.widgetsType);
+    this.filterWidgetTypes$.next(null);
     this.widgetsBundleValue = widgetBundle;
   }
 
@@ -58,12 +63,20 @@ export class DashboardWidgetSelectComponent implements OnInit {
     this.search$.next(search);
   }
 
+  @Input()
+  set filterWidgetTypes(widgetTypes: Array<widgetType>) {
+    this.filterWidgetTypes$.next(widgetTypes);
+  }
+
   @Output()
   widgetSelected: EventEmitter<WidgetInfo> = new EventEmitter<WidgetInfo>();
 
   @Output()
   widgetsBundleSelected: EventEmitter<WidgetsBundle> = new EventEmitter<WidgetsBundle>();
 
+  @Output()
+  widgetsTypes: EventEmitter<Set<widgetType>> = new EventEmitter<Set<widgetType>>();
+
   constructor(private widgetsService: WidgetService,
               private sanitizer: DomSanitizer) {
   }
@@ -73,21 +86,22 @@ export class DashboardWidgetSelectComponent implements OnInit {
       distinctUntilChanged(),
       switchMap(search => this.fetchWidgetBundle(search))
     );
-    this.widgets$ = this.search$.asObservable().pipe(
-      distinctUntilChanged(),
-      switchMap(search => this.fetchWidget(search))
+    this.widgets$ = combineLatest([this.search$.asObservable(), this.filterWidgetTypes$.asObservable()]).pipe(
+      distinctUntilChanged((oldValue, newValue) => JSON.stringify(oldValue) === JSON.stringify(newValue)),
+      switchMap(search => this.fetchWidget(...search))
     );
   }
 
   private getWidgets(): Observable<Array<WidgetInfo>> {
-    if (!this.widgetsTypes) {
+    if (!this.widgetsInfo) {
       if (this.widgetsBundle !== null) {
         const bundleAlias = this.widgetsBundle.alias;
         const isSystem = this.widgetsBundle.tenantId.id === NULL_UUID;
-        this.widgetsTypes = this.widgetsService.getBundleWidgetTypes(bundleAlias, isSystem).pipe(
+        this.widgetsInfo = this.widgetsService.getBundleWidgetTypes(bundleAlias, isSystem).pipe(
           map(widgets => widgets.sort((a, b) => b.createdTime - a.createdTime)),
           map(widgets => widgets.map((type) => {
             const widgetTypeInfo = toWidgetInfo(type);
+            this.widgetsType.add(widgetTypeInfo.type);
             const widget: WidgetInfo = {
               isSystemType: isSystem,
               bundleAlias,
@@ -99,14 +113,15 @@ export class DashboardWidgetSelectComponent implements OnInit {
             };
             return widget;
           })),
+          tap(() => this.widgetsTypes.emit(this.widgetsType)),
           publishReplay(1),
           refCount()
         );
       } else {
-        this.widgetsTypes = of([]);
+        this.widgetsInfo = of([]);
       }
     }
-    return this.widgetsTypes;
+    return this.widgetsInfo;
   }
 
   onWidgetClicked($event: Event, widget: WidgetInfo): void {
@@ -149,8 +164,9 @@ export class DashboardWidgetSelectComponent implements OnInit {
     );
   }
 
-  private fetchWidget(search: string): Observable<Array<WidgetInfo>> {
+  private fetchWidget(search: string, filter: widgetType[]): Observable<Array<WidgetInfo>> {
     return this.getWidgets().pipe(
+      map(widgets => filter ? widgets.filter((widget) => filter.includes(widget.type)) : widgets),
       map(widgets => search ? widgets.filter(
         widget => (
           widget.title?.toLowerCase().includes(search.toLowerCase()) ||

+<!--
+
+    Copyright © 2016-2021 The Thingsboard Authors
+
+    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.
+
+-->
+<div fxLayout="column" class="mat-content mat-padding">
+  <mat-checkbox style="padding-bottom: 8px;" [(ngModel)]="type.display" *ngFor="let type of types"
+                (ngModelChange)="update()">
+    {{ 'widget.' + type.type | translate }}
+  </mat-checkbox>
+</div>

+/**
+ * Copyright © 2016-2021 The Thingsboard Authors
+ *
+ * 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.
+ */
+:host {
+  width: 100%;
+  height: 100%;
+  min-width: 200px;
+  overflow: hidden;
+  background: #fff;
+  border-radius: 4px;
+  box-shadow:
+    0 7px 8px -4px rgba(0, 0, 0, .2),
+    0 13px 19px 2px rgba(0, 0, 0, .14),
+    0 5px 24px 4px rgba(0, 0, 0, .12);
+
+  .mat-content {
+    overflow: hidden;
+    background-color: #fff;
+  }
+
+  .mat-padding {
+    padding: 16px;
+  }
+}

+///
+/// Copyright © 2016-2021 The Thingsboard Authors
+///
+/// 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, Inject, InjectionToken } from '@angular/core';
+import { widgetType } from '@shared/models/widget.models';
+
+export const DISPLAY_WIDGET_TYPES_PANEL_DATA = new InjectionToken<any>('DisplayWidgetTypesPanelData');
+
+export interface WidgetTypes {
+  type: widgetType;
+  display: boolean;
+}
+
+export interface DisplayWidgetTypesPanelData {
+  types: WidgetTypes[];
+  typesUpdated: (columns: WidgetTypes[]) => void;
+}
+
+@Component({
+  selector: 'tb-widget-types-panel',
+  templateUrl: './widget-types-panel.component.html',
+  styleUrls: ['./widget-types-panel.component.scss']
+})
+export class DisplayWidgetTypesPanelComponent {
+
+  types: WidgetTypes[];
+
+  constructor(@Inject(DISPLAY_WIDGET_TYPES_PANEL_DATA) public data: DisplayWidgetTypesPanelData) {
+    this.types = this.data.types;
+  }
+
+  public update() {
+    this.data.typesUpdated(this.types);
+  }
+}

@@ -19,10 +19,8 @@
   <mat-toolbar class="details-toolbar" color="primary" [ngStyle]="{height: headerHeightPx+'px'}">
     <div class="mat-toolbar-tools" fxLayout="row" fxLayoutAlign="start center" style="height: 100%;">
       <div class="mat-toolbar-tools tb-details-title-header" fxFlex fxLayout="column" fxLayoutAlign="start start">
-        <div class="tb-details-title" fxLayout="row" fxLayoutGap="8px" fxLayoutAlign="start center">
-          <button class="tb-mat-28" mat-icon-button type="button" [fxHide]="!showBackStateIcon" (click)="onBackStateDetails()">
-            <mat-icon>arrow_back</mat-icon>
-          </button>
+        <div class="tb-details-title" fxLayout="row" fxLayoutAlign="start center">
+          <ng-content select=".prefix-title-buttons"></ng-content>
           <span>{{ headerTitle }}</span>
         </div>
         <span class="tb-details-subtitle">{{ headerSubtitle }}</span>

@@ -32,7 +32,6 @@ export class DetailsPanelComponent extends PageComponent {
   @Input() headerSubtitle = '';
   @Input() isReadOnly = false;
   @Input() isAlwaysEdit = false;
-  @Input() showBackStateIcon = false;
 
   theFormValue: FormGroup;
 
@@ -51,8 +50,6 @@ export class DetailsPanelComponent extends PageComponent {
   toggleDetailsEditMode = new EventEmitter<boolean>();
   @Output()
   applyDetails = new EventEmitter<void>();
-  @Output()
-  backStateDetails = new EventEmitter<void>();
 
   isEditValue = false;
 
@@ -78,10 +75,6 @@ export class DetailsPanelComponent extends PageComponent {
     this.closeDetails.emit();
   }
 
-  onBackStateDetails() {
-    this.backStateDetails.emit();
-  }
-
   onToggleDetailsEditMode() {
     if (!this.isAlwaysEdit) {
       this.isEdit = !this.isEdit;

@@ -132,6 +132,7 @@ import { ManageDashboardStatesDialogComponent } from '@home/components/dashboard
 import { DashboardStateDialogComponent } from '@home/components/dashboard-page/states/dashboard-state-dialog.component';
 import { EmbedDashboardDialogComponent } from '@home/components/widget/dialog/embed-dashboard-dialog.component';
 import { EMBED_DASHBOARD_DIALOG_TOKEN } from '@home/components/widget/dialog/embed-dashboard-dialog-token';
+import { DisplayWidgetTypesPanelComponent } from '@home/components/dashboard-page/widget-types-panel.component';
 
 @NgModule({
   declarations:
@@ -244,7 +245,8 @@ import { EMBED_DASHBOARD_DIALOG_TOKEN } from '@home/components/widget/dialog/emb
       DashboardSettingsDialogComponent,
       ManageDashboardStatesDialogComponent,
       DashboardStateDialogComponent,
-      EmbedDashboardDialogComponent
+      EmbedDashboardDialogComponent,
+      DisplayWidgetTypesPanelComponent
     ],
   imports: [
     CommonModule,
@@ -345,7 +347,8 @@ import { EMBED_DASHBOARD_DIALOG_TOKEN } from '@home/components/widget/dialog/emb
     DashboardSettingsDialogComponent,
     ManageDashboardStatesDialogComponent,
     DashboardStateDialogComponent,
-    EmbedDashboardDialogComponent
+    EmbedDashboardDialogComponent,
+    DisplayWidgetTypesPanelComponent
   ],
   providers: [
     WidgetComponentService,

@@ -18,7 +18,7 @@
 <div class="input-wrapper" fxLayoutAlign="start center" fxLayoutGap="8px">
   <mat-icon>search</mat-icon>
   <input type="text" [(ngModel)]="searchText" (ngModelChange)="updateSearchText()" [placeholder]=placeholder>
-  <button mat-button *ngIf="searchText" mat-icon-button (click)="clear()">
+  <button mat-button type="button" *ngIf="searchText" mat-icon-button (click)="clear()">
     <mat-icon>close</mat-icon>
   </button>
 </div>

@@ -2265,7 +2265,8 @@
         "no-data": "No data to display on widget",
         "data-overflow": "Widget displays {{count}} out of {{total}} entities",
         "alarm-data-overflow": "Widget displays alarms for {{allowedEntities}} (maximum allowed) entities out of {{totalEntities}} entities",
-        "search": "Search widget"
+        "search": "Search widget",
+        "filter": "Widget filter type"
     },
     "widget-action": {
         "header-button": "Widget header button",

@@ -753,6 +753,9 @@ mat-label {
     &.tb-mat-20 {
       @include tb-mat-icon-size(20);
     }
+    &.tb-mat-28 {
+      @include tb-mat-icon-size(28);
+    }
     &.tb-mat-32 {
       @include tb-mat-icon-size(32);
     }