fix(header): adopt for smaller screens

src/app/@theme/components/header/header.component.html

@@ -18,8 +18,12 @@
     </nb-action>
     <nb-action class="control-item" icon="email-outline"></nb-action>
     <nb-action class="control-item" icon="bell-outline"></nb-action>
-    <nb-action *nbIsGranted="['view', 'user']" >
+    <nb-action class="user-action" *nbIsGranted="['view', 'user']" >
-      <nb-user [nbContextMenu]="userMenu" [name]="user?.name" [picture]="user?.picture"></nb-user>
+      <nb-user [nbContextMenu]="userMenu"
+               [onlyPicture]="userPictureOnly"
+               [name]="user?.name"
+               [picture]="user?.picture">
+      </nb-user>
     </nb-action>
   </nb-actions>
 </div>

src/app/@theme/components/header/header.component.scss

@@ -1,3 +1,5 @@
+@import '~bootstrap/scss/mixins/breakpoints';
+@import '~@nebular/theme/styles/global/breakpoints';
 @import '../../styles/themes';
 
 @include nb-install-component() {
@@ -5,17 +7,6 @@
   justify-content: space-between;
   width: 100%;
 
-  .left {
-    display: flex;
-    width: 100%;
-    order: 0;
-    flex-direction: row;
-  }
-  .right {
-    order: 1;
-    flex-direction: row-reverse;
-  }
-
   .logo-container {
     display: flex;
     align-items: center;
@@ -60,4 +51,20 @@
       text-decoration: none;
     }
   }
+
+  @include media-breakpoint-down(sm) {
+    .control-item {
+      display: none;
+    }
+    .user-action {
+      border: none;
+      padding: 0;
+    }
+  }
+
+  @include media-breakpoint-down(is) {
+    nb-select {
+      display: none;
+    }
+  }
 }

src/app/@theme/components/header/header.component.ts

@@ -1,16 +1,20 @@
-import { Component, OnInit } from '@angular/core';
+import { Component, OnDestroy, OnInit } from '@angular/core';
-import { NbMenuService, NbSidebarService, NbThemeService } from '@nebular/theme';
+import { NbMediaBreakpointsService, NbMenuService, NbSidebarService, NbThemeService } from '@nebular/theme';
 
 import { UserData } from '../../../@core/data/users';
 import { LayoutService } from '../../../@core/utils';
+import { map, takeUntil } from 'rxjs/operators';
+import { pipe, Subject } from 'rxjs';
 
 @Component({
   selector: 'ngx-header',
   styleUrls: ['./header.component.scss'],
   templateUrl: './header.component.html',
 })
-export class HeaderComponent implements OnInit {
+export class HeaderComponent implements OnInit, OnDestroy {
 
+  private destroy$: Subject<void> = new Subject<void>();
+  userPictureOnly: boolean = false;
   user: any;
 
   themes = [
@@ -40,12 +44,27 @@ export class HeaderComponent implements OnInit {
               private menuService: NbMenuService,
               private themeService: NbThemeService,
               private userService: UserData,
-              private layoutService: LayoutService) {
+              private layoutService: LayoutService,
+              private breakpointService: NbMediaBreakpointsService) {
   }
 
   ngOnInit() {
     this.userService.getUsers()
+      .pipe(takeUntil(this.destroy$))
       .subscribe((users: any) => this.user = users.nick);
+
+    const { xl } = this.breakpointService.getBreakpointsMap();
+    this.themeService.onMediaQueryChange()
+      .pipe(
+        map(([, currentBreakpoint]) => currentBreakpoint.width < xl),
+        takeUntil(this.destroy$),
+      )
+      .subscribe((isLessThanXl: boolean) => this.userPictureOnly = isLessThanXl);
+  }
+
+  ngOnDestroy() {
+    this.destroy$.next();
+    this.destroy$.complete();
   }
 
   toggleTheme() {