feat(stepper): Support additional properties for step

src/cdk/stepper/stepper.ts

@@ -20,7 +20,8 @@ import {
   Component,
   ContentChild,
   ViewChild,
-  TemplateRef
+  TemplateRef,
+  ViewEncapsulation
 } from '@angular/core';
 import {LEFT_ARROW, RIGHT_ARROW, ENTER, SPACE} from '@angular/cdk/keycodes';
 import {CdkStepLabel} from './step-label';
@@ -53,7 +54,8 @@ export class StepperSelectionEvent {
 
 @Component({
   selector: 'cdk-step',
-  templateUrl: 'step.html'
+  templateUrl: 'step.html',
+  encapsulation: ViewEncapsulation.None
 })
 export class CdkStep {
   /** Template for step label if it exists. */
@@ -77,6 +79,35 @@ export class CdkStep {
   @Input()
   label: string;
 
+  @Input()
+  get editable() { return this._editable; }
+  set editable(value: any) {
+    this._editable = coerceBooleanProperty(value);
+  }
+  private _editable = true;
+
+  /** Whether the completion of step is optional or not. */
+  @Input()
+  get optional() { return this._optional; }
+  set optional(value: any) {
+    this._optional = coerceBooleanProperty(value);
+  }
+  private _optional = false;
+
+  /** Return whether step is completed or not. */
+  @Input()
+  get completed() {
+    return this._customCompleted == null ? this._defaultCompleted : this._customCompleted;
+  }
+  set completed(value: any) {
+    this._customCompleted = coerceBooleanProperty(value);
+  }
+  private _customCompleted: boolean | null = null;
+
+  private get _defaultCompleted() {
+    return this._stepControl ? this._stepControl.valid && this.interacted : this.interacted;
+  }
+
   constructor(private _stepper: CdkStepper) { }
 
   /** Selects this step component. */
@@ -109,7 +140,8 @@ export class CdkStepper {
   @Input()
   get selectedIndex() { return this._selectedIndex; }
   set selectedIndex(index: number) {
-    if (this._anyControlsInvalid(index)) {
+    if (this._anyControlsInvalid(index)
+        || index < this._selectedIndex && !this._steps.toArray()[index].editable) {
       // remove focus from clicked step header if the step is not able to be selected
       this._stepHeader.toArray()[index].nativeElement.blur();
     } else if (this._selectedIndex != index) {
@@ -134,7 +166,7 @@ export class CdkStepper {
   _focusIndex: number = 0;
 
   /** Used to track unique ID for each stepper component. */
-  private _groupId: number;
+  _groupId: number;
 
   constructor() {
     this._groupId = nextId++;
@@ -172,6 +204,16 @@ export class CdkStepper {
     }
   }
 
+  /** Returns the type of icon to be displayed. */
+  _getIndicatorType(index: number): 'number' | 'edit' | 'done' {
+    const step = this._steps.toArray()[index];
+    if (!step.completed || this._selectedIndex == index) {
+      return 'number';
+    } else {
+      return step.editable ? 'edit' : 'done';
+    }
+  }
+
   private _emitStepperSelectionEvent(newIndex: number): void {
     const stepsArray = this._steps.toArray();
     this.selectionChange.emit({

src/demo-app/stepper/stepper-demo.html

@@ -19,13 +19,13 @@ <h3>Linear Vertical Stepper Demo using a single form</h3>
       </div>
     </md-step>
 
-    <md-step formGroupName="1" [stepControl]="formArray.get([1])">
+    <md-step formGroupName="1" [stepControl]="formArray.get([1])" optional>
       <ng-template mdStepLabel>
-        <div>Fill out your phone number</div>
+        <div>Fill out your email address</div>
       </ng-template>
       <md-input-container>
-        <input mdInput placeholder="Phone number" formControlName="phoneFormCtrl">
-        <md-error>This field is required</md-error>
+        <input mdInput placeholder="Email address" formControlName="emailFormCtrl">
+        <md-error>The input is invalid.</md-error>
       </md-input-container>
       <div>
         <button md-button mdStepperPrevious type="button">Back</button>
@@ -62,12 +62,12 @@ <h3>Linear Horizontal Stepper Demo using a different form for each step</h3>
     </form>
   </md-step>
 
-  <md-step [stepControl]="phoneFormGroup">
-    <form [formGroup]="phoneFormGroup">
+  <md-step [stepControl]="emailFormGroup" optional>
+    <form [formGroup]="emailFormGroup">
       <ng-template mdStepLabel>Fill out your phone number</ng-template>
       <md-form-field>
-        <input mdInput placeholder="Phone number" formControlName="phoneCtrl" required>
-        <md-error>This field is required</md-error>
+        <input mdInput placeholder="Email address" formControlName="emailCtrl">
+        <md-error>The input is invalid</md-error>
       </md-form-field>
       <div>
         <button md-button mdStepperPrevious>Back</button>
@@ -88,44 +88,41 @@ <h3>Linear Horizontal Stepper Demo using a different form for each step</h3>
 </md-horizontal-stepper>
 
 <h3>Vertical Stepper Demo</h3>
+<md-checkbox [(ngModel)]="isNonEditable">Make steps non-editable</md-checkbox>
 <md-vertical-stepper>
-  <md-step>
+  <md-step [editable]="!isNonEditable">
     <ng-template mdStepLabel>Fill out your name</ng-template>
     <md-form-field>
       <input mdInput placeholder="First Name">
-      <md-error>This field is required</md-error>
     </md-form-field>
 
     <md-form-field>
       <input mdInput placeholder="Last Name">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperNext type="button">Next</button>
     </div>
   </md-step>
 
-  <md-step>
+  <md-step [editable]="!isNonEditable">
     <ng-template mdStepLabel>
       <div>Fill out your phone number</div>
     </ng-template>
     <md-form-field>
       <input mdInput placeholder="Phone number">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperPrevious type="button">Back</button>
       <button md-button mdStepperNext type="button">Next</button>
     </div>
   </md-step>
 
-  <md-step>
+  <md-step [editable]="!isNonEditable">
     <ng-template mdStepLabel>
       <div>Fill out your address</div>
     </ng-template>
     <md-form-field>
       <input mdInput placeholder="Address">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperPrevious type="button">Back</button>
@@ -148,25 +145,20 @@ <h3>Horizontal Stepper Demo</h3>
     <ng-template mdStepLabel>Fill out your name</ng-template>
     <md-form-field>
       <input mdInput placeholder="First Name">
-      <md-error>This field is required</md-error>
     </md-form-field>
 
     <md-form-field>
       <input mdInput placeholder="Last Name">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperNext type="button">Next</button>
     </div>
   </md-step>
 
   <md-step>
-    <ng-template mdStepLabel>
-      <div>Fill out your phone number</div>
-    </ng-template>
+    <ng-template mdStepLabel>Fill out your phone number</ng-template>
     <md-form-field>
       <input mdInput placeholder="Phone number">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperPrevious type="button">Back</button>
@@ -175,12 +167,9 @@ <h3>Horizontal Stepper Demo</h3>
   </md-step>
 
   <md-step>
-    <ng-template mdStepLabel>
-      <div>Fill out your address</div>
-    </ng-template>
+    <ng-template mdStepLabel>Fill out your address</ng-template>
     <md-form-field>
       <input mdInput placeholder="Address">
-      <md-error>This field is required</md-error>
     </md-form-field>
     <div>
       <button md-button mdStepperPrevious type="button">Back</button>

src/demo-app/stepper/stepper-demo.ts

@@ -1,6 +1,8 @@
 import {Component} from '@angular/core';
 import {FormBuilder, FormGroup, Validators} from '@angular/forms';
 
+const EMAIL_REGEX = /^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/;
+
 @Component({
   moduleId: module.id,
   selector: 'stepper-demo',
@@ -10,9 +12,10 @@ import {FormBuilder, FormGroup, Validators} from '@angular/forms';
 export class StepperDemo {
   formGroup: FormGroup;
   isNonLinear = false;
+  isNonEditable = false;
 
   nameFormGroup: FormGroup;
-  phoneFormGroup: FormGroup;
+  emailFormGroup: FormGroup;
 
   steps = [
     {label: 'Confirm your name', content: 'Last name, First name.'},
@@ -34,8 +37,8 @@ export class StepperDemo {
           lastNameFormCtrl: ['', Validators.required],
         }),
         this._formBuilder.group({
-          phoneFormCtrl: [''],
-        })
+          emailFormCtrl: ['', Validators.pattern(EMAIL_REGEX)]
+        }),
       ])
     });
 
@@ -44,8 +47,8 @@ export class StepperDemo {
       lastNameCtrl: ['', Validators.required],
     });
 
-    this.phoneFormGroup = this._formBuilder.group({
-      phoneCtrl: ['', Validators.required]
+    this.emailFormGroup = this._formBuilder.group({
+      emailCtrl: ['', Validators.pattern(EMAIL_REGEX)]
     });
   }
 }

src/lib/stepper/_stepper-theme.scss

@@ -7,30 +7,29 @@
   $background: map-get($theme, background);
   $primary: map-get($theme, primary);
 
-  .mat-horizontal-stepper-header, .mat-vertical-stepper-header {
-
+  .mat-step-header {
     &:focus,
     &:hover {
       background-color: mat-color($background, hover);
     }
 
-    .mat-stepper-label {
+    .mat-step-label-active {
       color: mat-color($foreground, text);
     }
 
-    .mat-stepper-index {
+    .mat-step-label-inactive,
+    .mat-step-optional {
+      color: mat-color($foreground, disabled-text);
+    }
+
+    .mat-step-icon {
       background-color: mat-color($primary);
       color: mat-color($primary, default-contrast);
     }
 
-    &[aria-selected='false'] {
-      .mat-stepper-label {
-        color: mat-color($foreground, disabled-text);
-      }
-
-      .mat-stepper-index {
-        background-color: mat-color($foreground, disabled-text);
-      }
+    .mat-step-icon-not-touched {
+      background-color: mat-color($foreground, disabled-text);
+      color: mat-color($primary, default-contrast);
     }
   }
 

src/lib/stepper/index.ts

@@ -17,13 +17,22 @@ import {CdkStepperModule} from '@angular/cdk/stepper';
 import {MdCommonModule} from '../core';
 import {MdStepLabel} from './step-label';
 import {MdStepperNext, MdStepperPrevious} from './stepper-button';
+import {MdIconModule} from '../icon/index';
+import {MdStepHeader} from './step-header';
 
 @NgModule({
-  imports: [MdCommonModule, CommonModule, PortalModule, MdButtonModule, CdkStepperModule],
+  imports: [
+    MdCommonModule,
+    CommonModule,
+    PortalModule,
+    MdButtonModule,
+    CdkStepperModule,
+    MdIconModule
+  ],
   exports: [MdCommonModule, MdHorizontalStepper, MdVerticalStepper, MdStep, MdStepLabel, MdStepper,
-    MdStepperNext, MdStepperPrevious],
+    MdStepperNext, MdStepperPrevious, MdStepHeader],
   declarations: [MdHorizontalStepper, MdVerticalStepper, MdStep, MdStepLabel, MdStepper,
-    MdStepperNext, MdStepperPrevious],
+    MdStepperNext, MdStepperPrevious, MdStepHeader],
 })
 export class MdStepperModule {}
 
@@ -32,3 +41,4 @@ export * from './stepper-vertical';
 export * from './step-label';
 export * from './stepper';
 export * from './stepper-button';
+export * from './step-header';

src/lib/stepper/step-header.html

@@ -0,0 +1,17 @@
+<div [class.mat-step-icon]="icon != 'number' || selected"
+     [class.mat-step-icon-not-touched]="icon == 'number' && !selected">
+  <span *ngIf="icon == 'number'">{{index + 1}}</span>
+  <md-icon *ngIf="icon == 'edit'">create</md-icon>
+  <md-icon *ngIf="icon == 'done'">done</md-icon>
+</div>
+<div [class.mat-step-label-active]="active"
+     [class.mat-step-label-inactive]="!active">
+  <!-- If there is a label template, use it. -->
+  <ng-container *ngIf="_templateLabel" [ngTemplateOutlet]="label.template">
+  </ng-container>
+  <!-- It there is no label template, fall back to the text label. -->
+  <div class="mat-step-text-label" *ngIf="_stringLabel">{{label}}</div>
+
+  <div class="mat-step-optional" *ngIf="optional">Optional</div>
+</div>
+

src/lib/stepper/step-header.scss

@@ -0,0 +1,46 @@
+$mat-stepper-label-header-height: 24px !default;
+$mat-stepper-label-min-width: 50px !default;
+$mat-stepper-side-gap: 24px !default;
+$mat-vertical-stepper-content-margin: 36px !default;
+$mat-stepper-line-gap: 8px !default;
+$mat-step-optional-font-size: 12px;
+$mat-step-header-icon-size: 16px !default;
+
+:host {
+  display: flex;
+}
+
+.mat-step-optional {
+  font-size: $mat-step-optional-font-size;
+}
+
+.mat-step-icon,
+.mat-step-icon-not-touched {
+  border-radius: 50%;
+  height: $mat-stepper-label-header-height;
+  width: $mat-stepper-label-header-height;
+  align-items: center;
+  justify-content: center;
+  display: flex;
+}
+
+.mat-step-icon .mat-icon {
+  font-size: $mat-step-header-icon-size;
+  height: $mat-step-header-icon-size;
+  width: $mat-step-header-icon-size;
+}
+
+.mat-step-label-active,
+.mat-step-label-inactive {
+  display: inline-block;
+  white-space: nowrap;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  min-width: $mat-stepper-label-min-width;
+  vertical-align: middle;
+}
+
+.mat-step-text-label {
+  text-overflow: ellipsis;
+  overflow: hidden;
+}