feat(table): add text column for simple columns

src/cdk/table/cell.ts

@@ -22,7 +22,7 @@ export interface CellDef {
  */
 @Directive({selector: '[cdkCellDef]'})
 export class CdkCellDef implements CellDef {
-  constructor(/** @docs-private */ public template: TemplateRef<any>) { }
+  constructor(/** @docs-private */ public template: TemplateRef<any>) {}
 }
 
 /**
@@ -31,7 +31,7 @@ export class CdkCellDef implements CellDef {
  */
 @Directive({selector: '[cdkHeaderCellDef]'})
 export class CdkHeaderCellDef implements CellDef {
-  constructor(/** @docs-private */ public template: TemplateRef<any>) { }
+  constructor(/** @docs-private */ public template: TemplateRef<any>) {}
 }
 
 /**
@@ -40,13 +40,13 @@ export class CdkHeaderCellDef implements CellDef {
  */
 @Directive({selector: '[cdkFooterCellDef]'})
 export class CdkFooterCellDef implements CellDef {
-  constructor(/** @docs-private */ public template: TemplateRef<any>) { }
+  constructor(/** @docs-private */ public template: TemplateRef<any>) {}
 }
 
 // Boilerplate for applying mixins to CdkColumnDef.
 /** @docs-private */
 export class CdkColumnDefBase {}
-export const _CdkColumnDefBase: CanStickCtor & typeof CdkColumnDefBase =
+export const _CdkColumnDefBase: CanStickCtor&typeof CdkColumnDefBase =
     mixinHasStickyInput(CdkColumnDefBase);
 
 /**
@@ -56,19 +56,20 @@ export const _CdkColumnDefBase: CanStickCtor & typeof CdkColumnDefBase =
 @Directive({
   selector: '[cdkColumnDef]',
   inputs: ['sticky'],
-  providers: [{
-    provide: 'MAT_SORT_HEADER_COLUMN_DEF',
-    useExisting: CdkColumnDef
-  }],
+  providers: [{provide: 'MAT_SORT_HEADER_COLUMN_DEF', useExisting: CdkColumnDef}],
 })
 export class CdkColumnDef extends _CdkColumnDefBase implements CanStick {
   /** Unique name for this column. */
   @Input('cdkColumnDef')
-  get name(): string { return this._name; }
+  get name(): string {
+    return this._name;
+  }
   set name(name: string) {
     // If the directive is set without a name (updated programatically), then this setter will
     // trigger with an empty string and should not overwrite the programatically set value.
-    if (!name) { return; }
+    if (!name) {
+      return;
+    }
 
     this._name = name;
     this.cssClassFriendlyName = name.replace(/[^a-z0-9_-]/ig, '-');
@@ -81,7 +82,9 @@ export class CdkColumnDef extends _CdkColumnDefBase implements CanStick {
    * has been changed.
    */
   @Input('stickyEnd')
-  get stickyEnd(): boolean { return this._stickyEnd; }
+  get stickyEnd(): boolean {
+    return this._stickyEnd;
+  }
   set stickyEnd(v: boolean) {
     const prevValue = this._stickyEnd;
     this._stickyEnd = coerceBooleanProperty(v);

src/cdk/table/public-api.ts

@@ -12,6 +12,7 @@ export * from './row';
 export * from './table-module';
 export * from './sticky-styler';
 export * from './can-stick';
+export * from './text-column';
 
 /** Re-export DataSource for a more intuitive experience for users of just the table. */
 export {DataSource} from '@angular/cdk/collections';

src/cdk/table/table-errors.ts

@@ -56,3 +56,11 @@ export function getTableMissingRowDefsError() {
 export function getTableUnknownDataSourceError() {
   return Error(`Provided data source did not match an array, Observable, or DataSource`);
 }
+
+/**
+ * Returns an error to be thrown when the text column cannot find a parent table to inject.
+ * @docs-private
+ */
+export function getTableTextColumnMissingParentTableError() {
+  return Error(`Text column could not find a parent table for registration.`);
+}

src/cdk/table/table-module.ts

@@ -17,6 +17,7 @@ import {
   CdkColumnDef, CdkHeaderCellDef, CdkHeaderCell, CdkCell, CdkCellDef,
   CdkFooterCellDef, CdkFooterCell
 } from './cell';
+import {CdkTextColumn} from './text-column';
 
 const EXPORTED_DECLARATIONS = [
   CdkTable,
@@ -37,6 +38,7 @@ const EXPORTED_DECLARATIONS = [
   DataRowOutlet,
   HeaderRowOutlet,
   FooterRowOutlet,
+  CdkTextColumn,
 ];
 
 @NgModule({

src/cdk/table/table.spec.ts

@@ -2326,7 +2326,7 @@ function getActualTableContent(tableElement: Element): string[][] {
   return actualTableContent.map(row => row.map(cell => cell.textContent!.trim()));
 }
 
-function expectTableToMatchContent(tableElement: Element, expected: any[]) {
+export function expectTableToMatchContent(tableElement: Element, expected: any[]) {
   const missedExpectations: string[] = [];
   function checkCellContent(actualCell: string, expectedCell: string) {
     if (actualCell !== expectedCell) {

src/cdk/table/text-column.spec.ts

@@ -0,0 +1,184 @@
+import {Component} from '@angular/core';
+import {async, ComponentFixture, TestBed} from '@angular/core/testing';
+
+import {getTableTextColumnMissingParentTableError} from './table-errors';
+import {CdkTableModule} from './table-module';
+import {expectTableToMatchContent} from './table.spec';
+import {TEXT_COLUMN_OPTIONS, TextColumnOptions} from './text-column';
+
+
+describe('CdkTextColumn', () => {
+  let fixture: ComponentFixture<BasicTextColumnApp>;
+  let component: BasicTextColumnApp;
+  let tableElement: HTMLElement;
+
+  beforeEach(async(() => {
+    TestBed
+        .configureTestingModule({
+          imports: [CdkTableModule],
+          declarations: [
+            BasicTextColumnApp,
+            MissingTableApp,
+          ],
+        })
+        .compileComponents();
+  }));
+
+  beforeEach(() => {
+    fixture = TestBed.createComponent(BasicTextColumnApp);
+    component = fixture.componentInstance;
+    fixture.detectChanges();
+
+    tableElement = fixture.nativeElement.querySelector('.cdk-table');
+  });
+
+  it('should render the basic columns', () => {
+    expectTableToMatchContent(tableElement, [
+      ['PropertyA', 'PropertyB', 'PropertyC'],
+      ['a_1', 'b_1', 'c_1'],
+      ['a_2', 'b_2', 'c_2'],
+    ]);
+  });
+
+  it('should throw an error if the text column is not in the content of a table', () => {
+    expect(() => TestBed.createComponent(MissingTableApp).detectChanges())
+        .toThrowError(getTableTextColumnMissingParentTableError().message);
+  });
+
+  it('should allow for alternate header text', () => {
+    component.headerTextB = 'column-b';
+    fixture.detectChanges();
+
+    expectTableToMatchContent(tableElement, [
+      ['PropertyA', 'column-b', 'PropertyC'],
+      ['a_1', 'b_1', 'c_1'],
+      ['a_2', 'b_2', 'c_2'],
+    ]);
+  });
+
+  it('should allow for custom data accessor', () => {
+    component.dataAccessorA = (data: TestData) => data.propertyA + '!';
+    fixture.detectChanges();
+
+    expectTableToMatchContent(tableElement, [
+      ['PropertyA', 'PropertyB', 'PropertyC'],
+      ['a_1!', 'b_1', 'c_1'],
+      ['a_2!', 'b_2', 'c_2'],
+    ]);
+  });
+
+  it('should allow for custom data accessor', () => {
+    component.dataAccessorA = (data: TestData) => data.propertyA + '!';
+    fixture.detectChanges();
+
+    expectTableToMatchContent(tableElement, [
+      ['PropertyA', 'PropertyB', 'PropertyC'],
+      ['a_1!', 'b_1', 'c_1'],
+      ['a_2!', 'b_2', 'c_2'],
+    ]);
+  });
+
+  it('should update values when data changes', () => {
+    component.data = [
+      {propertyA: 'changed-a_1', propertyB: 'b_1', propertyC: 'c_1'},
+      {propertyA: 'changed-a_2', propertyB: 'b_2', propertyC: 'c_2'},
+    ];
+    fixture.detectChanges();
+
+    expectTableToMatchContent(tableElement, [
+      ['PropertyA', 'PropertyB', 'PropertyC'],
+      ['changed-a_1', 'b_1', 'c_1'],
+      ['changed-a_2', 'b_2', 'c_2'],
+    ]);
+  });
+
+  describe('with options', () => {
+    function createTestComponent(options: TextColumnOptions<any>) {
+      // Reset the previously configured testing module to be able set new providers.
+      // The testing module has been initialized in the root describe group for the ripples.
+      TestBed.resetTestingModule();
+      TestBed.configureTestingModule({
+        imports: [CdkTableModule],
+        declarations: [BasicTextColumnApp],
+        providers: [{provide: TEXT_COLUMN_OPTIONS, useValue: options}]
+      });
+
+      fixture = TestBed.createComponent(BasicTextColumnApp);
+      fixture.detectChanges();
+
+      tableElement = fixture.nativeElement.querySelector('.cdk-table');
+    }
+
+    it('should be able to provide a header text transformation', () => {
+      const defaultHeaderTextTransform = (name: string) => `${name}!`;
+      createTestComponent({defaultHeaderTextTransform});
+
+      expectTableToMatchContent(tableElement, [
+        ['propertyA!', 'propertyB!', 'propertyC!'],
+        ['a_1', 'b_1', 'c_1'],
+        ['a_2', 'b_2', 'c_2'],
+      ]);
+    });
+
+    it('should be able to provide a general data accessor', () => {
+      const defaultDataAccessor = (data: TestData, name: string) => {
+        switch (name) {
+          case 'propertyA':
+            return `A: ${data.propertyA}`;
+          case 'propertyB':
+            return `B: ${data.propertyB}`;
+          case 'propertyC':
+            return `C: ${data.propertyC}`;
+          default:
+            return '';
+        }
+      };
+      createTestComponent({defaultDataAccessor});
+
+      expectTableToMatchContent(tableElement, [
+        ['PropertyA', 'PropertyB', 'PropertyC'],
+        ['A: a_1', 'B: b_1', 'C: c_1'],
+        ['A: a_2', 'B: b_2', 'C: c_2'],
+      ]);
+    });
+  });
+});
+
+interface TestData {
+  propertyA: string;
+  propertyB: string;
+  propertyC: string;
+}
+
+@Component({
+  template: `
+    <cdk-table [dataSource]="data">
+      <cdk-text-column name="propertyA" [dataAccessor]="dataAccessorA"></cdk-text-column>
+      <cdk-text-column name="propertyB" [headerText]="headerTextB"></cdk-text-column>
+      <cdk-text-column name="propertyC" [justify]="justifyC"></cdk-text-column>
+
+      <cdk-header-row *cdkHeaderRowDef="displayedColumns"></cdk-header-row>
+      <cdk-row *cdkRowDef="let row; columns: displayedColumns"></cdk-row>
+    </cdk-table>
+  `
+})
+class BasicTextColumnApp {
+  displayedColumns = ['propertyA', 'propertyB', 'propertyC'];
+
+  data: TestData[] = [
+    {propertyA: 'a_1', propertyB: 'b_1', propertyC: 'c_1'},
+    {propertyA: 'a_2', propertyB: 'b_2', propertyC: 'c_2'},
+  ];
+
+  headerTextB: string;
+  dataAccessorA: (data: TestData) => string;
+  justifyC = 'start';
+}
+
+@Component({
+  template: `
+    <cdk-text-column name="column-a"></cdk-text-column>
+  `
+})
+class MissingTableApp {
+}