Can I programmatically move the steps of a mat-horizontal stepper into corner / corner material

Question

I have a question regarding angular material (with angular 4+). Say, in the template of my component, I add a component <mat-horizontal-stepper>, and at each step <mat-step>I have navigation buttons to navigate the component. Like this...

<mat-horizontal-stepper>
  <mat-step>
    Step 1
    <button mat-button matStepperPrevious type="button">Back</button>
    <button mat-button matStepperNext type="button">Next</button>
  </mat-step>
  <mat-step>
    Step 2
    <button mat-button matStepperPrevious type="button">Back</button>
    <button mat-button matStepperNext type="button">Next</button>
  </mat-step>
  <mat-step>
    Step 3
    <button mat-button matStepperPrevious type="button">Back</button>
    <button mat-button matStepperNext type="button">Next</button>
  </mat-step>
</mat-horizontal-stepper>

Now I am wondering if it is possible to remove the buttons from each step and place them somewhere in <mat-horizontal-stepper>a static position or even outside, <mat-horizontal-stepper>and I can move back and forth using the code in my component typescript file. To give an idea, I would like my HTML to be something like this

<mat-horizontal-stepper>
    <mat-step>
        Step 1
    </mat-step>
    <mat-step>
        Step 2
    </mat-step>
    <mat-step>
        Step 3
    </mat-step>
    <!-- one option -->
    <div>
       <button mat-button matStepperPrevious type="button">Back</button>
       <button mat-button matStepperNext type="button">Next</button>
    </div>
</mat-horizontal-stepper>

<!-- second option -->
<div>
   <button (click)="goBack()" type="button">Back</button>
   <button (click)="goForward()" type="button">Next</button>
</div>

Answer 1

. , selectedIndex MatStepper. , MatStepper next() previous(). .

:

#stepper #stepper. goBack() goForward() goForward():

<mat-horizontal-stepper #stepper>
    <!-- Steps -->
</mat-horizontal-stepper>    
<!-- second option -->
<div>
   <button (click)="goBack(stepper)" type="button">Back</button>
   <button (click)="goForward(stepper)" type="button">Next</button>
</div>

.. :

import { MatStepper } from '@angular/material/stepper';

goBack(stepper: MatStepper){
    stepper.previous();
}

goForward(stepper: MatStepper){
    stepper.next();
}

.

/ " Back " Next ", :

<button (click)="goBack(stepper)" type="button" 
        [disabled]="stepper.selectedIndex === 0">Back</button>
<button (click)="goForward(stepper)" type="button" 
        [disabled]="stepper.selectedIndex === stepper._steps.length-1">Next</button>

Answer 2

@Faisal, MatStepper .

, , , Service - .

HTML:

<div fxLayout="row" fxLayoutAlign="center center" fxLayoutGap="6px">
  <button (click)="move(0)">1st</button>
  <button (click)="move(1)">2nd</button>
  <button (click)="move(2)">3rd</button>
  <button (click)="move(3)">4th</button>
</div>

TS:

move(index: number) {
    this.stepper.selectedIndex = index;
}

.

Answer 3

, , :

• stepper : <mat-horizontal-stepper linear #matHorizontalStepper>
• mat-step : <mat-step [completed]="isThisStepDone">
• mat-step , : <button (click)="next(matHorizontalStepper)">NEXT STEP</button>
• .ts MatStepper :
  @ViewChild('matHorizontalStepper') stepper: MatStepper;
• Also, in the file, .tsinitialize isThisStepDoneas false :isThisStepDone: boolean = false;

• Then write a method for the NEXT STEP button with the name next():

  submit(stepper: MatStepper) {
   this.isThisStepDone = true;
   setTimeout(() => {           // or do some API calls/ Async events
    stepper.next();
   }, 1);
  }
  

Answer 4

You can also do this by specifying the actual stepper index using selectedIndex.

stackblitz: https://stackblitz.com/edit/angular-4rvy2s?file=app%2Fstepper-overview-example.ts

HTML:

<div class="fab-nav-container">
   <mat-vertical-stepper linear="false" #stepper>
       <mat-step *ngFor="let step of stepNodes; let i = index">
           <ng-template matStepLabel>
               <p> {{step.title}} </p>
           </ng-template>
       </mat-step>
   </mat-vertical-stepper>
</div>

<div class="button-container">
   <div class="button-grp">
      <button mat-stroked-button (click)="clickButton(1, stepper)">1</button>
      <button mat-stroked-button (click)="clickButton(2, stepper)">2</button>
      <button mat-stroked-button (click)="clickButton(3, stepper)">3</button>
   </div>
</div>

TS:

import {Component, OnInit, ViewChild} from '@angular/core';
import {FormBuilder, FormGroup, Validators} from '@angular/forms';
import { MatVerticalStepper } from '@angular/material';
import { MatStepper } from '@angular/material';
export interface INodes {
    title: string;
    seq: number;
    flowId: string;
}
/**
 * @title Stepper overview
 */
@Component({
  selector: 'stepper-overview-example',
  templateUrl: 'stepper-overview-example.html',
  styleUrls: ['stepper-overview-example.scss'],
})
export class StepperOverviewExample implements OnInit {
  @ViewChild(MatVerticalStepper) vert_stepper: MatVerticalStepper;
  @ViewChild('stepper') private myStepper: MatStepper;

  stepNodes: INodes[] = [
    { title: 'Request Submission', seq: 1, flowId: 'xasd12'}, 
    { title: 'Department Approval', seq: 2, flowId: 'erda23'}, 
    { title: 'Requestor Confirmation', seq: 3, flowId: 'fsyq51'}, 
  ];

  ngOnInit() {
  }
  ngAfterViewInit() {
    this.vert_stepper._getIndicatorType = () => 'number';
  }
  clickButton(index: number, stepper: MatStepper) {
      stepper.selectedIndex = index - 1;
  }
}