prototype(tabs): create prototype tabs based on MDC web

src/dev-app/mdc-tabs/BUILD.bazel

@@ -12,6 +12,7 @@ ng_module(
     ],
     deps = [
         "//src/material-experimental/mdc-tabs",
+        "//src/material/button-toggle",
         "@npm//@angular/router",
     ],
 )

src/dev-app/mdc-tabs/mdc-tabs-demo-module.ts

@@ -9,12 +9,16 @@
 import {NgModule} from '@angular/core';
 import {MatTabsModule} from '@angular/material-experimental/mdc-tabs';
 import {RouterModule} from '@angular/router';
+import {CommonModule} from '@angular/common';
 import {MdcTabsDemo} from './mdc-tabs-demo';
+import {MatButtonToggleModule} from '@angular/material/button-toggle';
 
 @NgModule({
   imports: [
     MatTabsModule,
     RouterModule.forChild([{path: '', component: MdcTabsDemo}]),
+    CommonModule,
+    MatButtonToggleModule,
   ],
   declarations: [MdcTabsDemo],
 })

src/dev-app/mdc-tabs/mdc-tabs-demo.html

@@ -1,2 +1,113 @@
-<!-- TODO: copy in demo template from existing tabs demo. -->
-Not yet implemented.
+<div class="mat-typography">
+  <h2>Paginated tabs</h2>
+  <mat-tab-group>
+    <mat-tab [label]="tab" *ngFor="let tab of lotsOfTabs">Content</mat-tab>
+  </mat-tab-group>
+
+  <h2>Themed tabs</h2>
+  <mat-tab-group [color]="'primary'">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+    <mat-tab label="Fourth" disabled>Content 4</mat-tab>
+  </mat-tab-group>
+
+  <mat-tab-group [color]="'accent'">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+    <mat-tab label="Fourth" disabled>Content 4</mat-tab>
+  </mat-tab-group>
+
+  <mat-tab-group [color]="'warn'">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+    <mat-tab label="Fourth" disabled>Content 4</mat-tab>
+  </mat-tab-group>
+
+  <h2>Stretched tabs</h2>
+  <mat-tab-group mat-stretch-tabs>
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+  </mat-tab-group>
+
+  <h2>Aligned tabs</h2>
+  <mat-tab-group mat-align-tabs="start">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+  </mat-tab-group>
+
+  <mat-tab-group mat-align-tabs="center">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+  </mat-tab-group>
+
+  <mat-tab-group mat-align-tabs="end">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+  </mat-tab-group>
+
+  <h2>Inverted tabs</h2>
+  <mat-tab-group headerPosition="below">
+    <mat-tab label="First">Content 1</mat-tab>
+    <mat-tab label="Second">Content 2</mat-tab>
+    <mat-tab label="Third">Content 3</mat-tab>
+  </mat-tab-group>
+
+  <h2>Tabs with background color</h2>
+  <div>
+    <mat-button-toggle-group #backgroundColorToggle="matButtonToggleGroup"
+                              value="primary"
+                              aria-label="Change color">
+      <mat-button-toggle value="primary">Primary</mat-button-toggle>
+      <mat-button-toggle value="accent">Accent</mat-button-toggle>
+      <mat-button-toggle value="warn">Warn</mat-button-toggle>
+    </mat-button-toggle-group>
+  </div>
+
+  <mat-tab-group [backgroundColor]="backgroundColorToggle.value">
+    <mat-tab [label]="tab" *ngFor="let tab of lotsOfTabs">Content</mat-tab>
+  </mat-tab-group>
+
+  <h2>Template labels</h2>
+
+  <mat-tab-group>
+    <mat-tab>
+      <ng-template mat-tab-label>One</ng-template>
+      First tab's content
+    </mat-tab>
+    <mat-tab>
+      <ng-template mat-tab-label>Two</ng-template>
+      Second tab's content
+    </mat-tab>
+    <mat-tab>
+      <ng-template mat-tab-label>Three</ng-template>
+      Third tab's content
+    </mat-tab>
+  </mat-tab-group>
+
+  <h2>Lazy tabs</h2>
+  <mat-tab-group>
+    <mat-tab label="One">
+      Eager
+    </mat-tab>
+    <mat-tab label="Two">
+      <ng-template matTabContent>
+        <div class="child">Lazy</div>
+      </ng-template>
+    </mat-tab>
+  </mat-tab-group>
+
+  <h2>Tab nav bar</h2>
+  <nav mat-tab-nav-bar>
+    <a mat-tab-link *ngFor="let link of links"
+      (click)="activeLink = link"
+      [active]="activeLink == link">{{link}}</a>
+    <a mat-tab-link disabled>Disabled Link</a>
+  </nav>
+</div>

src/dev-app/mdc-tabs/mdc-tabs-demo.scss

@@ -1 +1,3 @@
-// TODO: copy in demo styles from existing tabs demo.
+mat-tab-group {
+  margin-bottom: 32px;
+}

src/dev-app/mdc-tabs/mdc-tabs-demo.ts

@@ -15,4 +15,7 @@ import {Component} from '@angular/core';
   styleUrls: ['mdc-tabs-demo.css'],
 })
 export class MdcTabsDemo {
+  links = ['First', 'Second', 'Third'];
+  lotsOfTabs = new Array(30).fill(0).map((_, index) => `Tab ${index}`);
+  activeLink = this.links[0];
 }

src/e2e-app/mdc-tabs/mdc-tabs-e2e-module.ts

@@ -7,11 +7,13 @@
  */
 
 import {NgModule} from '@angular/core';
+import {MatFormFieldModule} from '@angular/material/form-field';
+import {MatInputModule} from '@angular/material/input';
 import {MatTabsModule} from '@angular/material-experimental/mdc-tabs';
 import {MdcTabsE2e} from './mdc-tabs-e2e';
 
 @NgModule({
-  imports: [MatTabsModule],
+  imports: [MatTabsModule, MatFormFieldModule, MatInputModule],
   declarations: [MdcTabsE2e],
 })
 export class MdcTabsE2eModule {

src/e2e-app/mdc-tabs/mdc-tabs-e2e.html

@@ -1 +1,18 @@
-<!-- TODO: copy implementation from existing tabs e2e page. -->
+<section>
+  <mat-tab-group>
+    <mat-tab>
+      <ng-template mat-tab-label>One</ng-template>
+      <mat-form-field>
+        <textarea matInput placeholder="Autosize textarea" cdkTextareaAutosize>This is an autosize textarea, it should adjust to the size of its content.</textarea>
+      </mat-form-field>
+    </mat-tab>
+    <mat-tab>
+      <ng-template mat-tab-label>Two</ng-template>
+      Second tab's content
+    </mat-tab>
+    <mat-tab>
+      <ng-template mat-tab-label>Three</ng-template>
+      Third tab's content
+    </mat-tab>
+  </mat-tab-group>
+</section>

src/e2e-app/mdc-tabs/mdc-tabs-e2e.ts

@@ -14,5 +14,4 @@ import {Component} from '@angular/core';
   templateUrl: 'mdc-tabs-e2e.html',
 })
 export class MdcTabsE2e {
-  // TODO: copy implementation from existing tabs e2e page.
 }

src/material-experimental/mdc-tabs/BUILD.bazel

@@ -2,20 +2,38 @@ package(default_visibility = ["//visibility:public"])
 
 load("@io_bazel_rules_sass//:defs.bzl", "sass_binary", "sass_library")
 load("//src/e2e-app:test_suite.bzl", "e2e_test_suite")
-load("//tools:defaults.bzl", "ng_e2e_test_library", "ng_module")
+load("//tools:defaults.bzl", "ng_e2e_test_library", "ng_module", "ng_test_library", "ng_web_test_suite")
 
 ng_module(
     name = "mdc-tabs",
     srcs = glob(
         ["**/*.ts"],
         exclude = ["**/*.spec.ts"],
     ),
-    assets = [":tabs_scss"] + glob(["**/*.html"]),
+    assets = [
+        ":tabs_scss",
+        ":tab-body.css",
+        ":tab-header.css",
+        ":tab-group.css",
+        ":tab-nav-bar/tab-nav-bar.css",
+        ":tab-nav-bar/tab-link.css",
+    ] + glob(["**/*.html"]),
     module_name = "@angular/material-experimental/mdc-tabs",
     deps = [
+        "//src/cdk/a11y",
+        "//src/cdk/bidi",
+        "//src/cdk/coercion",
+        "//src/cdk/keycodes",
+        "//src/cdk/observers",
+        "//src/cdk/platform",
+        "//src/cdk/portal",
+        "//src/cdk/scrolling",
         "//src/material/core",
+        "//src/material/tabs",
+        "@npm//@angular/animations",
         "@npm//@angular/common",
         "@npm//@angular/core",
+        "@npm//@material/tab-indicator",
     ],
 )
 
@@ -30,21 +48,85 @@ sass_library(
 
 sass_binary(
     name = "tabs_scss",
-    src = "tabs.scss",
-    include_paths = [
-        "external/npm/node_modules",
-    ],
+    src = "_mdc-tabs.scss",
+    include_paths = ["external/npm/node_modules"],
     deps = [
+        "//src/material-experimental/mdc-helpers:mdc_helpers_scss_lib",
         "//src/material-experimental/mdc-helpers:mdc_scss_deps_lib",
     ],
 )
 
+sass_binary(
+    name = "mdc_tab_body_scss",
+    src = "tab-body.scss",
+    include_paths = ["external/npm/node_modules"],
+    deps = ["//src/material/core:core_scss_lib"],
+)
+
+sass_binary(
+    name = "mdc_tab_header_scss",
+    src = "tab-header.scss",
+    include_paths = ["external/npm/node_modules"],
+    deps = [":mdc_tabs_scss_lib"],
+)
+
+sass_binary(
+    name = "mdc_tab_group_scss",
+    src = "tab-group.scss",
+    include_paths = ["external/npm/node_modules"],
+    deps = [":mdc_tabs_scss_lib"],
+)
+
+sass_binary(
+    name = "mdc_tab_nav_bar_scss",
+    src = "tab-nav-bar/tab-nav-bar.scss",
+    include_paths = ["external/npm/node_modules"],
+    deps = [":mdc_tabs_scss_lib"],
+)
+
+sass_binary(
+    name = "mdc_tab_link_scss",
+    src = "tab-nav-bar/tab-link.scss",
+    include_paths = ["external/npm/node_modules"],
+    deps = [":mdc_tabs_scss_lib"],
+)
+
+ng_test_library(
+    name = "tabs_tests_lib",
+    srcs = glob(
+        ["**/*.spec.ts"],
+        exclude = ["**/*.e2e.spec.ts"],
+    ),
+    deps = [
+        ":mdc-tabs",
+        "//src/cdk-experimental/testing",
+        "//src/cdk-experimental/testing/testbed",
+        "//src/cdk/bidi",
+        "//src/cdk/keycodes",
+        "//src/cdk/observers",
+        "//src/cdk/portal",
+        "//src/cdk/scrolling",
+        "//src/cdk/testing",
+        "//src/material/core",
+        "@npm//@angular/common",
+        "@npm//@angular/platform-browser",
+        "@npm//rxjs",
+    ],
+)
+
+ng_web_test_suite(
+    name = "unit_tests",
+    static_files = ["@npm//:node_modules/@material/tab-indicator/dist/mdc.tabIndicator.js"],
+    deps = [
+        ":tabs_tests_lib",
+        "//src/material-experimental:mdc_require_config.js",
+    ],
+)
+
 ng_e2e_test_library(
     name = "e2e_test_sources",
     srcs = glob(["**/*.e2e.spec.ts"]),
-    deps = [
-        "//src/cdk/private/testing/e2e",
-    ],
+    deps = ["//src/cdk/private/testing/e2e"],
 )
 
 e2e_test_suite(