fix(table): errors when rendering table with sticky elements on the server

Fixes a handful of errors that were being thrown by `mat-table` when it has sticky rows and when it's being used with the native `table` elements.

Fixes #12094.

Author: crisbeto

src/cdk/table/BUILD.bazel

@@ -11,6 +11,7 @@ ng_module(
     "//src/cdk/bidi",
     "//src/cdk/collections",
     "//src/cdk/coercion",
+    "//src/cdk/platform",
     "@rxjs",
   ],
   tsconfig = "//src/cdk:tsconfig-build.json",

src/cdk/table/sticky-styler.ts

@@ -32,10 +32,12 @@ export class StickyStyler {
    *     sticky positioning applied.
    * @param direction The directionality context of the table (ltr/rtl); affects column positioning
    *     by reversing left/right positions.
+   * @param _isBrowser Whether the table is currently being rendered on the server or the client.
    */
   constructor(private isNativeHtmlTable: boolean,
               private stickCellCss: string,
-              public direction: Direction) { }
+              public direction: Direction,
+              private _isBrowser = true) { }
 
   /**
    * Clears the sticky positioning styles from the row and its cells by resetting the `position`
@@ -66,7 +68,7 @@ export class StickyStyler {
       rows: HTMLElement[], stickyStartStates: boolean[], stickyEndStates: boolean[]) {
     const hasStickyColumns =
         stickyStartStates.some(state => state) || stickyEndStates.some(state => state);
-    if (!rows.length || !hasStickyColumns) {
+    if (!rows.length || !hasStickyColumns || !this._isBrowser) {
       return;
     }
 
@@ -104,6 +106,11 @@ export class StickyStyler {
    *
    */
   stickRows(rowsToStick: HTMLElement[], stickyStates: boolean[], position: 'top' | 'bottom') {
+    // Since we can't measure the rows on the server, we can't stick the rows properly.
+    if (!this._isBrowser) {
+      return;
+    }
+
     // If positioning the rows to the bottom, reverse their order when evaluating the sticky
     // position such that the last row stuck will be "bottom: 0px" and so on.
     const rows = position === 'bottom' ? rowsToStick.reverse() : rowsToStick;

src/cdk/table/table.ts

@@ -31,7 +31,9 @@ import {
   ViewChild,
   ViewContainerRef,
   ViewEncapsulation,
+  Inject,
 } from '@angular/core';
+import {DOCUMENT} from '@angular/common';
 import {BehaviorSubject, Observable, of as observableOf, Subject, Subscription} from 'rxjs';
 import {takeUntil} from 'rxjs/operators';
 import {CdkColumnDef} from './cell';
@@ -55,6 +57,7 @@ import {
 import {coerceBooleanProperty} from '@angular/cdk/coercion';
 import {StickyStyler} from './sticky-styler';
 import {Direction, Directionality} from '@angular/cdk/bidi';
+import {Platform} from '@angular/cdk/platform';
 
 /** Interface used to provide an outlet for rows to be inserted into. */
 export interface RowOutlet {
@@ -148,6 +151,8 @@ export interface RenderRow<T> {
   changeDetection: ChangeDetectionStrategy.OnPush,
 })
 export class CdkTable<T> implements AfterContentChecked, CollectionViewer, OnDestroy, OnInit {
+  private _document: Document;
+
   /** Latest data provided by the data source. */
   protected _data: T[];
 
@@ -359,11 +364,19 @@ export class CdkTable<T> implements AfterContentChecked, CollectionViewer, OnDes
               protected readonly _changeDetectorRef: ChangeDetectorRef,
               protected readonly _elementRef: ElementRef,
               @Attribute('role') role: string,
-              @Optional() protected readonly _dir: Directionality) {
+              @Optional() protected readonly _dir: Directionality,
+              /**
+               * @deprecated
+               * @deletion-target 8.0.0 `_document` and `_platform` to
+               *    be made into a required parameters.
+               */
+              @Inject(DOCUMENT) _document?: any,
+              private _platform?: Platform) {
     if (!role) {
       this._elementRef.nativeElement.setAttribute('role', 'grid');
     }
 
+    this._document = _document;
     this._isNativeHtmlTable = this._elementRef.nativeElement.nodeName === 'TABLE';
   }
 
@@ -947,7 +960,9 @@ export class CdkTable<T> implements AfterContentChecked, CollectionViewer, OnDes
     ];
 
     for (const section of sections) {
-      const element = document.createElement(section.tag);
+      // @deletion-target 8.0.0 remove the `|| document` once the `_document` is a required param.
+      const documentRef = this._document || document;
+      const element = documentRef.createElement(section.tag);
       element.appendChild(section.outlet.elementRef.nativeElement);
       this._elementRef.nativeElement.appendChild(element);
     }
@@ -999,7 +1014,9 @@ export class CdkTable<T> implements AfterContentChecked, CollectionViewer, OnDes
    */
   private _setupStickyStyler() {
     const direction: Direction = this._dir ? this._dir.value : 'ltr';
-    this._stickyStyler = new StickyStyler(this._isNativeHtmlTable, this.stickyCssClass, direction);
+    this._stickyStyler = new StickyStyler(this._isNativeHtmlTable,
+        // @deletion-target 8.0.0 remove the null check for `this._platform`.
+        this.stickyCssClass, direction, this._platform ? this._platform.isBrowser : true);
     (this._dir ? this._dir.change : observableOf<Direction>())
         .pipe(takeUntil(this._onDestroy))
         .subscribe(value => {
@@ -1010,6 +1027,6 @@ export class CdkTable<T> implements AfterContentChecked, CollectionViewer, OnDes
 }
 
 /** Utility function that gets a merged list of the entries in a QueryList and values of a Set. */
-function  mergeQueryListAndSet<T>(queryList: QueryList<T>, set: Set<T>): T[] {
+function mergeQueryListAndSet<T>(queryList: QueryList<T>, set: Set<T>): T[] {
   return queryList.toArray().concat(Array.from(set));
 }

src/lib/table/BUILD.bazel

@@ -14,6 +14,7 @@ ng_module(
     "//src/lib/paginator",
     "//src/lib/sort",
     "//src/cdk/table",
+    "//src/cdk/platform",
     "@rxjs",
   ] + glob(["**/*.html"]),
   tsconfig = "//src/lib:tsconfig-build.json",

src/lib/table/table.ts

@@ -14,10 +14,13 @@ import {
   ElementRef,
   IterableDiffers,
   Optional,
-  ViewEncapsulation
+  ViewEncapsulation,
+  Inject
 } from '@angular/core';
+import {DOCUMENT} from '@angular/common';
 import {CDK_TABLE_TEMPLATE, CdkTable} from '@angular/cdk/table';
 import {Directionality} from '@angular/cdk/bidi';
+import {Platform} from '@angular/cdk/platform';
 
 /**
  * Wrapper for the CdkTable with Material design styles.
@@ -47,7 +50,9 @@ export class MatTable<T> extends CdkTable<T> {
               protected _changeDetectorRef: ChangeDetectorRef,
               protected _elementRef: ElementRef,
               @Attribute('role') role: string,
-              @Optional() protected readonly _dir: Directionality) {
-    super(_differs, _changeDetectorRef, _elementRef, role, _dir);
+              @Optional() protected readonly _dir: Directionality,
+              @Inject(DOCUMENT) _document?: any,
+              platform?: Platform) {
+    super(_differs, _changeDetectorRef, _elementRef, role, _dir, _document, platform);
   }
 }

src/universal-app/kitchen-sink/kitchen-sink.html

@@ -303,6 +303,21 @@ <h2>Material Table</h2>
   <mat-row *cdkRowDef="let row; columns: tableColumns;"></mat-row>
 </mat-table>
 
+<h2>Native table with sticky header and footer</h2>
+
+<table mat-table [dataSource]="tableDataSource">
+  <ng-container matColumnDef="userId">
+    <th mat-header-cell *matHeaderCellDef>ID</th>
+    <td mat-cell *matCellDef="let row">{{row.userId}}</td>
+    <td mat-footer-cell *matFooterCellDef>ID</td>
+  </ng-container>
+
+  <tr mat-header-row *matHeaderRowDef="tableColumns; sticky: true"></tr>
+  <tr mat-row *matRowDef="let row; columns: tableColumns;"></tr>
+  <tr mat-footer-row *matFooterRowDef="tableColumns; sticky: true"></tr>
+</table>
+
+
 <h2>Selection list</h2>
 <mat-selection-list>
   <h3 mat-subheader>Groceries</h3>