Unable to set items as sticky within mat-tabs

Is there a way to make my image stick in place using the following CSS code? 

 
position: -webkit-sticky;
position: sticky;
top: 1px;

I have tried implementing it but haven't been successful. 

 HTML:

<mat-tab-group class="user-tabs"
(selectedTabChange)="changeUserTab($event)">
  <mat-tab label="Selectable Tasks">
    <mat-tab-group class="user-chats"
        (selectedTabChange)="changeChatTab($event)">
        <mat-tab *ngFor="let chat of userData.chats; let i = index;">
           <img>
        </mat-tab>
    </mat-tab-group>
  </mat-tab>
</mat-tab-group>

I do realize I have tabs within tabs, does anyone have a solution for this issue? Thanks.

cssangularangular-materialmat-tab

Answer №1

Here's a potential fix:

 <mat-tab-group
      id="my-tab-group"
      mat-stretch-tabs
      [selectedIndex]="tab"
      (selectedIndexChange)="changeTab($event)"
    >
      <mat-tab>
        <custom-component-with-sticky-content></custom-component-with-sticky-content>
      </mat-tab>
      <mat-tab>
        <my-second-component></my-second-component>
      </mat-tab>
 </mat-tab-group>
 ...

and some CSS tweaks:

 styles: [
     `
  /* To enable sticky content functionality */
  ::ng-deep #my-tab-group .mat-tab-body-wrapper .mat-tab-body.mat-tab-body-active {
    overflow: visible !important;
  }

  ::ng-deep #my-tab-group .mat-tab-body-wrapper {
    overflow: visible !important;
  }

  ::ng-deep #my-tab-group .mat-tab-body-wrapper .mat-tab-body-content {
    overflow: visible !important;
  }
`,
],

Answer №2

I successfully implemented this solution with the use of *ngTemplateOutlet (with some guidance from other sources, although ngTemplateOutlet was the key factor)

HTML:

<div class="main-container" id="main-container">
    <mat-tab-group id="tabs" #tabs>
        <mat-tab label="myTabLabel">    
           (place your code here)
        </mat-tab>
    </mat-tab-group>
</div>


<ng-container *ngTemplateOutlet="idek"> </ng-container>


<ng-template #idek>
    <mat-toolbar color="warn" >Second Toolbar</mat-toolbar>
    <div id="add-spacing">
        (Your custom content here with details on Lorem Ipsum and its origins)
        
    </div>

</ng-template>

CSS:

::ng-deep #tabs .mat-tab-body-wrapper .mat-tab-body.mat-tab-body-active {
    overflow: visible !important;
}

::ng-deep #tabs .mat-tab-body-wrapper {
   overflow: visible !important;
}

::ng-deep #tabs .mat-tab-body-wrapper .mat-tab-body-content {
    overflow: visible !important;
}

mat-toolbar {
    --default-height: 50px !important;
}

mat-toolbar {
    position: sticky !important;
    top: var(--default-height) !important;
}

.main-container {
    (your CSS styling code here)
}

The outcome:

https://i.stack.imgur.com/ozhJI.gif

Answer №3

Consider using the CSS property position:fixed and optionally include z-index:999 for visual hierarchy.

Answer №4

Discovered a cause - functionality fails when one of the parent elements utilizes the CSS property overflow with a value of hidden, which is evident in the mat-tabs scenario.

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