chore(cdk): create cdk/collections (#6208)

Author: andrewseguin

.github/CODEOWNERS

@@ -49,7 +49,8 @@ src/lib/core/datetime/**           @mmalerba
 # CDK
 src/cdk/coercion/**                @jelbourn
 src/cdk/rxjs/**                    @jelbourn
-src/cdk/observers/**               @crisbeto @jelbourn
+src/cdk/observers/**               @jelbourn @crisbeto
+src/cdk/collections/**             @jelbourn @crisbeto @andrewseguin
 src/cdk/a11y/**                    @jelbourn @devversion
 src/cdk/platform/**                @jelbourn @devversion
 src/cdk/bidi/**                    @jelbourn

src/cdk/collections/collection-viewer.ts

@@ -0,0 +1,17 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+import {Observable} from 'rxjs/Observable';
+
+/**
+ * Interface for any component that provides a view of some data collection and wants to provide
+ * information regarding the view and any changes made.
+ */
+export interface CollectionViewer {
+  viewChange: Observable<{start: number, end: number}>;
+}

src/cdk/table/data-source.ts renamed to src/cdk/collections/data-source.ts

@@ -7,10 +7,7 @@
  */
 
 import {Observable} from 'rxjs/Observable';
-
-export interface CollectionViewer {
-  viewChange: Observable<{start: number, end: number}>;
-}
+import {CollectionViewer} from './collection-viewer';
 
 export abstract class DataSource<T> {
   /**

src/cdk/collections/index.ts

@@ -0,0 +1,9 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+export * from './public_api';

src/cdk/collections/public_api.ts

@@ -0,0 +1,11 @@
+/**
+ * @license
+ * Copyright Google Inc. All Rights Reserved.
+ *
+ * Use of this source code is governed by an MIT-style license that can be
+ * found in the LICENSE file at https://angular.io/license
+ */
+
+export * from './collection-viewer';
+export * from './data-source';
+export * from './selection';

src/lib/core/selection/selection.spec.ts renamed to src/cdk/collections/selection.spec.ts

@@ -8,10 +8,8 @@
 
 import {Subject} from 'rxjs/Subject';
 
-
 /**
  * Class to be used to power selecting one or more options from a list.
- * @docs-private
  */
 export class SelectionModel<T> {
   /** Currently-selected values. */

src/lib/core/selection/selection.ts renamed to src/cdk/collections/selection.ts

@@ -0,0 +1,13 @@
+{
+  "extends": "../tsconfig-build",
+  "files": [
+    "public_api.ts"
+  ],
+  "angularCompilerOptions": {
+    "annotateForClosureCompiler": true,
+    "strictMetadataEmit": true,
+    "flatModuleOutFile": "index.js",
+    "flatModuleId": "@angular/cdk/collections",
+    "skipTemplateCodegen": true
+  }
+}

src/cdk/collections/tsconfig-build.json

@@ -12,11 +12,13 @@ import {HeaderRowPlaceholder, RowPlaceholder, CdkTable} from './table';
 import {CdkCellOutlet, CdkHeaderRow, CdkHeaderRowDef, CdkRow, CdkRowDef} from './row';
 import {CdkColumnDef, CdkHeaderCellDef, CdkHeaderCell, CdkCell, CdkCellDef} from './cell';
 
-export * from './data-source';
 export * from './table';
 export * from './cell';
 export * from './row';
 
+/** Re-export DataSource for a more intuitive experience for users of just the table. */
+export {DataSource} from '@angular/cdk/collections';
+
 const EXPORTED_DECLARATIONS = [
   CdkTable,
   CdkRowDef,

src/cdk/table/public_api.ts

@@ -1,7 +1,7 @@
 import {async, ComponentFixture, TestBed} from '@angular/core/testing';
 import {Component, ViewChild} from '@angular/core';
 import {CdkTable} from './table';
-import {CollectionViewer, DataSource} from './data-source';
+import {CollectionViewer, DataSource} from '@angular/cdk/collections';
 import {BehaviorSubject} from 'rxjs/BehaviorSubject';
 import {Observable} from 'rxjs/Observable';
 import {combineLatest} from 'rxjs/observable/combineLatest';