node_modules/@angular/material/fesm2015/tree.js - nifi-fds - Git at Google

 import { CdkTreeNode, CdkTree, CdkTreeNodeDef, CdkNestedTreeNode, CDK_TREE_NODE_OUTLET_NODE, CdkTreeNodePadding, CdkTreeNodeOutlet, CdkTreeNodeToggle, CdkTreeModule } from '@angular/cdk/tree';
 import { Directive, ElementRef, Attribute, Input, IterableDiffers, ViewContainerRef, Inject, Optional, Component, ViewEncapsulation, ChangeDetectionStrategy, ViewChild, NgModule } from '@angular/core';
 import { mixinTabIndex, mixinDisabled, MatCommonModule } from '@angular/material/core';
 import { coerceBooleanProperty } from '@angular/cdk/coercion';
 import { DataSource } from '@angular/cdk/collections';
 import { BehaviorSubject, merge } from 'rxjs';
 import { take, map } from 'rxjs/operators';

 /**
  * @license
  * Copyright Google LLC 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
  */
 const _MatTreeNodeMixinBase = mixinTabIndex(mixinDisabled(CdkTreeNode));
 /**
  * Wrapper for the CdkTree node with Material design styles.
  */
 class MatTreeNode extends _MatTreeNodeMixinBase {
     constructor(_elementRef, _tree, tabIndex) {
         super(_elementRef, _tree);
         this._elementRef = _elementRef;
         this._tree = _tree;
         this.tabIndex = Number(tabIndex) || 0;
         // The classes are directly added here instead of in the host property because classes on
         // the host property are not inherited with View Engine. It is not set as a @HostBinding because
         // it is not set by the time it's children nodes try to read the class from it.
         // TODO: move to host after View Engine deprecation
         this._elementRef.nativeElement.classList.add('mat-tree-node');
     }
     // This is a workaround for https://github.com/angular/angular/issues/23091
     // In aot mode, the lifecycle hooks from parent class are not called.
     ngOnInit() {
         super.ngOnInit();
     }
     ngDoCheck() {
         super.ngDoCheck();
     }
     ngOnDestroy() {
         super.ngOnDestroy();
     }
 }
 MatTreeNode.decorators = [
     { type: Directive, args: [{
                 selector: 'mat-tree-node',
                 exportAs: 'matTreeNode',
                 inputs: ['role', 'disabled', 'tabIndex'],
                 providers: [{ provide: CdkTreeNode, useExisting: MatTreeNode }]
             },] }
 ];
 MatTreeNode.ctorParameters = () => [
     { type: ElementRef },
     { type: CdkTree },
     { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }
 ];
 /**
  * Wrapper for the CdkTree node definition with Material design styles.
  * Captures the node's template and a when predicate that describes when this node should be used.
  */
 class MatTreeNodeDef extends CdkTreeNodeDef {
 }
 MatTreeNodeDef.decorators = [
     { type: Directive, args: [{
                 selector: '[matTreeNodeDef]',
                 inputs: [
                     'when: matTreeNodeDefWhen'
                 ],
                 providers: [{ provide: CdkTreeNodeDef, useExisting: MatTreeNodeDef }]
             },] }
 ];
 MatTreeNodeDef.propDecorators = {
     data: [{ type: Input, args: ['matTreeNode',] }]
 };
 /**
  * Wrapper for the CdkTree nested node with Material design styles.
  */
 class MatNestedTreeNode extends CdkNestedTreeNode {
     constructor(_elementRef, _tree, _differs, tabIndex) {
         super(_elementRef, _tree, _differs);
         this._elementRef = _elementRef;
         this._tree = _tree;
         this._differs = _differs;
         this._disabled = false;
         this.tabIndex = Number(tabIndex) || 0;
         // The classes are directly added here instead of in the host property because classes on
         // the host property are not inherited with View Engine. It is not set as a @HostBinding because
         // it is not set by the time it's children nodes try to read the class from it.
         // TODO: move to host after View Engine deprecation
         this._elementRef.nativeElement.classList.add('mat-nested-tree-node');
     }
     /** Whether the node is disabled. */
     get disabled() { return this._disabled; }
     set disabled(value) { this._disabled = coerceBooleanProperty(value); }
     /** Tabindex for the node. */
     get tabIndex() { return this.disabled ? -1 : this._tabIndex; }
     set tabIndex(value) {
         // If the specified tabIndex value is null or undefined, fall back to the default value.
         this._tabIndex = value != null ? value : 0;
     }
     // This is a workaround for https://github.com/angular/angular/issues/19145
     // In aot mode, the lifecycle hooks from parent class are not called.
     // TODO(tinayuangao): Remove when the angular issue #19145 is fixed
     ngOnInit() {
         super.ngOnInit();
     }
     ngDoCheck() {
         super.ngDoCheck();
     }
     ngAfterContentInit() {
         super.ngAfterContentInit();
     }
     ngOnDestroy() {
         super.ngOnDestroy();
     }
 }
 MatNestedTreeNode.decorators = [
     { type: Directive, args: [{
                 selector: 'mat-nested-tree-node',
                 exportAs: 'matNestedTreeNode',
                 inputs: ['role', 'disabled', 'tabIndex'],
                 providers: [
                     { provide: CdkNestedTreeNode, useExisting: MatNestedTreeNode },
                     { provide: CdkTreeNode, useExisting: MatNestedTreeNode },
                     { provide: CDK_TREE_NODE_OUTLET_NODE, useExisting: MatNestedTreeNode }
                 ]
             },] }
 ];
 MatNestedTreeNode.ctorParameters = () => [
     { type: ElementRef },
     { type: CdkTree },
     { type: IterableDiffers },
     { type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }
 ];
 MatNestedTreeNode.propDecorators = {
     node: [{ type: Input, args: ['matNestedTreeNode',] }],
     disabled: [{ type: Input }],
     tabIndex: [{ type: Input }]
 };

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Wrapper for the CdkTree padding with Material design styles.
  */
 class MatTreeNodePadding extends CdkTreeNodePadding {
     /** The level of depth of the tree node. The padding will be `level * indent` pixels. */
     get level() { return this._level; }
     set level(value) { this._setLevelInput(value); }
     /** The indent for each level. Default number 40px from material design menu sub-menu spec. */
     get indent() { return this._indent; }
     set indent(indent) { this._setIndentInput(indent); }
 }
 MatTreeNodePadding.decorators = [
     { type: Directive, args: [{
                 selector: '[matTreeNodePadding]',
                 providers: [{ provide: CdkTreeNodePadding, useExisting: MatTreeNodePadding }]
             },] }
 ];
 MatTreeNodePadding.propDecorators = {
     level: [{ type: Input, args: ['matTreeNodePadding',] }],
     indent: [{ type: Input, args: ['matTreeNodePaddingIndent',] }]
 };

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Outlet for nested CdkNode. Put `[matTreeNodeOutlet]` on a tag to place children dataNodes
  * inside the outlet.
  */
 class MatTreeNodeOutlet {
     constructor(viewContainer, _node) {
         this.viewContainer = viewContainer;
         this._node = _node;
     }
 }
 MatTreeNodeOutlet.decorators = [
     { type: Directive, args: [{
                 selector: '[matTreeNodeOutlet]',
                 providers: [{
                         provide: CdkTreeNodeOutlet,
                         useExisting: MatTreeNodeOutlet
                     }]
             },] }
 ];
 MatTreeNodeOutlet.ctorParameters = () => [
     { type: ViewContainerRef },
     { type: undefined, decorators: [{ type: Inject, args: [CDK_TREE_NODE_OUTLET_NODE,] }, { type: Optional }] }
 ];

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Wrapper for the CdkTable with Material design styles.
  */
 class MatTree extends CdkTree {
 }
 MatTree.decorators = [
     { type: Component, args: [{
                 selector: 'mat-tree',
                 exportAs: 'matTree',
                 template: `<ng-container matTreeNodeOutlet></ng-container>`,
                 host: {
                     // The 'cdk-tree' class needs to be included here because classes set in the host in the
                     // parent class are not inherited with View Engine. The 'cdk-tree' class in CdkTreeNode has
                     // to be set in the host because:
                     // if it is set as a @HostBinding it is not set by the time the tree nodes try to read the
                     // class from it.
                     // the ElementRef is not available in the constructor so the class can't be applied directly
                     // without a breaking constructor change.
                     'class': 'mat-tree cdk-tree',
                     'role': 'tree',
                 },
                 encapsulation: ViewEncapsulation.None,
                 // See note on CdkTree for explanation on why this uses the default change detection strategy.
                 // tslint:disable-next-line:validate-decorators
                 changeDetection: ChangeDetectionStrategy.Default,
                 providers: [{ provide: CdkTree, useExisting: MatTree }],
                 styles: [".mat-tree{display:block}.mat-tree-node{display:flex;align-items:center;flex:1;word-wrap:break-word}.mat-nested-tree-node{border-bottom-width:0}\n"]
             },] }
 ];
 MatTree.propDecorators = {
     _nodeOutlet: [{ type: ViewChild, args: [MatTreeNodeOutlet, { static: true },] }]
 };

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Wrapper for the CdkTree's toggle with Material design styles.
  */
 // tslint:disable-next-line: coercion-types
 class MatTreeNodeToggle extends CdkTreeNodeToggle {
     get recursive() { return this._recursive; }
     set recursive(value) {
         // TODO: when we remove support for ViewEngine, change this setter to an input
         // alias in the decorator metadata.
         this._recursive = coerceBooleanProperty(value);
     }
 }
 MatTreeNodeToggle.decorators = [
     { type: Directive, args: [{
                 selector: '[matTreeNodeToggle]',
                 providers: [{ provide: CdkTreeNodeToggle, useExisting: MatTreeNodeToggle }]
             },] }
 ];
 MatTreeNodeToggle.propDecorators = {
     recursive: [{ type: Input, args: ['matTreeNodeToggleRecursive',] }]
 };

 /**
  * @license
  * Copyright Google LLC 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
  */
 const MAT_TREE_DIRECTIVES = [
     MatNestedTreeNode,
     MatTreeNodeDef,
     MatTreeNodePadding,
     MatTreeNodeToggle,
     MatTree,
     MatTreeNode,
     MatTreeNodeOutlet
 ];
 class MatTreeModule {
 }
 MatTreeModule.decorators = [
     { type: NgModule, args: [{
                 imports: [CdkTreeModule, MatCommonModule],
                 exports: [MatCommonModule, MAT_TREE_DIRECTIVES],
                 declarations: MAT_TREE_DIRECTIVES,
             },] }
 ];

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Tree flattener to convert a normal type of node to node with children & level information.
  * Transform nested nodes of type `T` to flattened nodes of type `F`.
  *
  * For example, the input data of type `T` is nested, and contains its children data:
  *   SomeNode: {
  *     key: 'Fruits',
  *     children: [
  *       NodeOne: {
  *         key: 'Apple',
  *       },
  *       NodeTwo: {
  *        key: 'Pear',
  *      }
  *    ]
  *  }
  *  After flattener flatten the tree, the structure will become
  *  SomeNode: {
  *    key: 'Fruits',
  *    expandable: true,
  *    level: 1
  *  },
  *  NodeOne: {
  *    key: 'Apple',
  *    expandable: false,
  *    level: 2
  *  },
  *  NodeTwo: {
  *   key: 'Pear',
  *   expandable: false,
  *   level: 2
  * }
  * and the output flattened type is `F` with additional information.
  */
 class MatTreeFlattener {
     constructor(transformFunction, getLevel, isExpandable, getChildren) {
         this.transformFunction = transformFunction;
         this.getLevel = getLevel;
         this.isExpandable = isExpandable;
         this.getChildren = getChildren;
     }
     _flattenNode(node, level, resultNodes, parentMap) {
         const flatNode = this.transformFunction(node, level);
         resultNodes.push(flatNode);
         if (this.isExpandable(flatNode)) {
             const childrenNodes = this.getChildren(node);
             if (childrenNodes) {
                 if (Array.isArray(childrenNodes)) {
                     this._flattenChildren(childrenNodes, level, resultNodes, parentMap);
                 }
                 else {
                     childrenNodes.pipe(take(1)).subscribe(children => {
                         this._flattenChildren(children, level, resultNodes, parentMap);
                     });
                 }
             }
         }
         return resultNodes;
     }
     _flattenChildren(children, level, resultNodes, parentMap) {
         children.forEach((child, index) => {
             let childParentMap = parentMap.slice();
             childParentMap.push(index != children.length - 1);
             this._flattenNode(child, level + 1, resultNodes, childParentMap);
         });
     }
     /**
      * Flatten a list of node type T to flattened version of node F.
      * Please note that type T may be nested, and the length of `structuredData` may be different
      * from that of returned list `F[]`.
      */
     flattenNodes(structuredData) {
         let resultNodes = [];
         structuredData.forEach(node => this._flattenNode(node, 0, resultNodes, []));
         return resultNodes;
     }
     /**
      * Expand flattened node with current expansion status.
      * The returned list may have different length.
      */
     expandFlattenedNodes(nodes, treeControl) {
         let results = [];
         let currentExpand = [];
         currentExpand[0] = true;
         nodes.forEach(node => {
             let expand = true;
             for (let i = 0; i <= this.getLevel(node); i++) {
                 expand = expand && currentExpand[i];
             }
             if (expand) {
                 results.push(node);
             }
             if (this.isExpandable(node)) {
                 currentExpand[this.getLevel(node) + 1] = treeControl.isExpanded(node);
             }
         });
         return results;
     }
 }
 /**
  * Data source for flat tree.
  * The data source need to handle expansion/collapsion of the tree node and change the data feed
  * to `MatTree`.
  * The nested tree nodes of type `T` are flattened through `MatTreeFlattener`, and converted
  * to type `F` for `MatTree` to consume.
  */
 class MatTreeFlatDataSource extends DataSource {
     constructor(_treeControl, _treeFlattener, initialData = []) {
         super();
         this._treeControl = _treeControl;
         this._treeFlattener = _treeFlattener;
         this._flattenedData = new BehaviorSubject([]);
         this._expandedData = new BehaviorSubject([]);
         this._data = new BehaviorSubject(initialData);
     }
     get data() { return this._data.value; }
     set data(value) {
         this._data.next(value);
         this._flattenedData.next(this._treeFlattener.flattenNodes(this.data));
         this._treeControl.dataNodes = this._flattenedData.value;
     }
     connect(collectionViewer) {
         const changes = [
             collectionViewer.viewChange,
             this._treeControl.expansionModel.changed,
             this._flattenedData
         ];
         return merge(...changes).pipe(map(() => {
             this._expandedData.next(this._treeFlattener.expandFlattenedNodes(this._flattenedData.value, this._treeControl));
             return this._expandedData.value;
         }));
     }
     disconnect() {
         // no op
     }
 }

 /**
  * @license
  * Copyright Google LLC 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
  */
 /**
  * Data source for nested tree.
  *
  * The data source for nested tree doesn't have to consider node flattener, or the way to expand
  * or collapse. The expansion/collapsion will be handled by TreeControl and each non-leaf node.
  */
 class MatTreeNestedDataSource extends DataSource {
     constructor() {
         super(...arguments);
         this._data = new BehaviorSubject([]);
     }
     /**
      * Data for the nested tree
      */
     get data() { return this._data.value; }
     set data(value) { this._data.next(value); }
     connect(collectionViewer) {
         return merge(...[collectionViewer.viewChange, this._data])
             .pipe(map(() => {
             return this.data;
         }));
     }
     disconnect() {
         // no op
     }
 }

 /**
  * @license
  * Copyright Google LLC 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
  */

 /**
  * Generated bundle index. Do not edit.
  */

 export { MatNestedTreeNode, MatTree, MatTreeFlatDataSource, MatTreeFlattener, MatTreeModule, MatTreeNestedDataSource, MatTreeNode, MatTreeNodeDef, MatTreeNodeOutlet, MatTreeNodePadding, MatTreeNodeToggle };
 //# sourceMappingURL=tree.js.map
	import { CdkTreeNode, CdkTree, CdkTreeNodeDef, CdkNestedTreeNode, CDK_TREE_NODE_OUTLET_NODE, CdkTreeNodePadding, CdkTreeNodeOutlet, CdkTreeNodeToggle, CdkTreeModule } from '@angular/cdk/tree';
	import { Directive, ElementRef, Attribute, Input, IterableDiffers, ViewContainerRef, Inject, Optional, Component, ViewEncapsulation, ChangeDetectionStrategy, ViewChild, NgModule } from '@angular/core';
	import { mixinTabIndex, mixinDisabled, MatCommonModule } from '@angular/material/core';
	import { coerceBooleanProperty } from '@angular/cdk/coercion';
	import { DataSource } from '@angular/cdk/collections';
	import { BehaviorSubject, merge } from 'rxjs';
	import { take, map } from 'rxjs/operators';

	/**
	* @license
	* Copyright Google LLC 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
	*/
	const _MatTreeNodeMixinBase = mixinTabIndex(mixinDisabled(CdkTreeNode));
	/**
	* Wrapper for the CdkTree node with Material design styles.
	*/
	class MatTreeNode extends _MatTreeNodeMixinBase {
	constructor(_elementRef, _tree, tabIndex) {
	super(_elementRef, _tree);
	this._elementRef = _elementRef;
	this._tree = _tree;
	this.tabIndex = Number(tabIndex) \|\| 0;
	// The classes are directly added here instead of in the host property because classes on
	// the host property are not inherited with View Engine. It is not set as a @HostBinding because
	// it is not set by the time it's children nodes try to read the class from it.
	// TODO: move to host after View Engine deprecation
	this._elementRef.nativeElement.classList.add('mat-tree-node');
	}
	// This is a workaround for https://github.com/angular/angular/issues/23091
	// In aot mode, the lifecycle hooks from parent class are not called.
	ngOnInit() {
	super.ngOnInit();
	}
	ngDoCheck() {
	super.ngDoCheck();
	}
	ngOnDestroy() {
	super.ngOnDestroy();
	}
	}
	MatTreeNode.decorators = [
	{ type: Directive, args: [{
	selector: 'mat-tree-node',
	exportAs: 'matTreeNode',
	inputs: ['role', 'disabled', 'tabIndex'],
	providers: [{ provide: CdkTreeNode, useExisting: MatTreeNode }]
	},] }
	];
	MatTreeNode.ctorParameters = () => [
	{ type: ElementRef },
	{ type: CdkTree },
	{ type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }
	];
	/**
	* Wrapper for the CdkTree node definition with Material design styles.
	* Captures the node's template and a when predicate that describes when this node should be used.
	*/
	class MatTreeNodeDef extends CdkTreeNodeDef {
	}
	MatTreeNodeDef.decorators = [
	{ type: Directive, args: [{
	selector: '[matTreeNodeDef]',
	inputs: [
	'when: matTreeNodeDefWhen'
	],
	providers: [{ provide: CdkTreeNodeDef, useExisting: MatTreeNodeDef }]
	},] }
	];
	MatTreeNodeDef.propDecorators = {
	data: [{ type: Input, args: ['matTreeNode',] }]
	};
	/**
	* Wrapper for the CdkTree nested node with Material design styles.
	*/
	class MatNestedTreeNode extends CdkNestedTreeNode {
	constructor(_elementRef, _tree, _differs, tabIndex) {
	super(_elementRef, _tree, _differs);
	this._elementRef = _elementRef;
	this._tree = _tree;
	this._differs = _differs;
	this._disabled = false;
	this.tabIndex = Number(tabIndex) \|\| 0;
	// The classes are directly added here instead of in the host property because classes on
	// the host property are not inherited with View Engine. It is not set as a @HostBinding because
	// it is not set by the time it's children nodes try to read the class from it.
	// TODO: move to host after View Engine deprecation
	this._elementRef.nativeElement.classList.add('mat-nested-tree-node');
	}
	/** Whether the node is disabled. */
	get disabled() { return this._disabled; }
	set disabled(value) { this._disabled = coerceBooleanProperty(value); }
	/** Tabindex for the node. */
	get tabIndex() { return this.disabled ? -1 : this._tabIndex; }
	set tabIndex(value) {
	// If the specified tabIndex value is null or undefined, fall back to the default value.
	this._tabIndex = value != null ? value : 0;
	}
	// This is a workaround for https://github.com/angular/angular/issues/19145
	// In aot mode, the lifecycle hooks from parent class are not called.
	// TODO(tinayuangao): Remove when the angular issue #19145 is fixed
	ngOnInit() {
	super.ngOnInit();
	}
	ngDoCheck() {
	super.ngDoCheck();
	}
	ngAfterContentInit() {
	super.ngAfterContentInit();
	}
	ngOnDestroy() {
	super.ngOnDestroy();
	}
	}
	MatNestedTreeNode.decorators = [
	{ type: Directive, args: [{
	selector: 'mat-nested-tree-node',
	exportAs: 'matNestedTreeNode',
	inputs: ['role', 'disabled', 'tabIndex'],
	providers: [
	{ provide: CdkNestedTreeNode, useExisting: MatNestedTreeNode },
	{ provide: CdkTreeNode, useExisting: MatNestedTreeNode },
	{ provide: CDK_TREE_NODE_OUTLET_NODE, useExisting: MatNestedTreeNode }
	]
	},] }
	];
	MatNestedTreeNode.ctorParameters = () => [
	{ type: ElementRef },
	{ type: CdkTree },
	{ type: IterableDiffers },
	{ type: String, decorators: [{ type: Attribute, args: ['tabindex',] }] }
	];
	MatNestedTreeNode.propDecorators = {
	node: [{ type: Input, args: ['matNestedTreeNode',] }],
	disabled: [{ type: Input }],
	tabIndex: [{ type: Input }]
	};

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Wrapper for the CdkTree padding with Material design styles.
	*/
	class MatTreeNodePadding extends CdkTreeNodePadding {
	/** The level of depth of the tree node. The padding will be `level * indent` pixels. */
	get level() { return this._level; }
	set level(value) { this._setLevelInput(value); }
	/** The indent for each level. Default number 40px from material design menu sub-menu spec. */
	get indent() { return this._indent; }
	set indent(indent) { this._setIndentInput(indent); }
	}
	MatTreeNodePadding.decorators = [
	{ type: Directive, args: [{
	selector: '[matTreeNodePadding]',
	providers: [{ provide: CdkTreeNodePadding, useExisting: MatTreeNodePadding }]
	},] }
	];
	MatTreeNodePadding.propDecorators = {
	level: [{ type: Input, args: ['matTreeNodePadding',] }],
	indent: [{ type: Input, args: ['matTreeNodePaddingIndent',] }]
	};

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Outlet for nested CdkNode. Put `[matTreeNodeOutlet]` on a tag to place children dataNodes
	* inside the outlet.
	*/
	class MatTreeNodeOutlet {
	constructor(viewContainer, _node) {
	this.viewContainer = viewContainer;
	this._node = _node;
	}
	}
	MatTreeNodeOutlet.decorators = [
	{ type: Directive, args: [{
	selector: '[matTreeNodeOutlet]',
	providers: [{
	provide: CdkTreeNodeOutlet,
	useExisting: MatTreeNodeOutlet
	}]
	},] }
	];
	MatTreeNodeOutlet.ctorParameters = () => [
	{ type: ViewContainerRef },
	{ type: undefined, decorators: [{ type: Inject, args: [CDK_TREE_NODE_OUTLET_NODE,] }, { type: Optional }] }
	];

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Wrapper for the CdkTable with Material design styles.
	*/
	class MatTree extends CdkTree {
	}
	MatTree.decorators = [
	{ type: Component, args: [{
	selector: 'mat-tree',
	exportAs: 'matTree',
	template: `<ng-container matTreeNodeOutlet></ng-container>`,
	host: {
	// The 'cdk-tree' class needs to be included here because classes set in the host in the
	// parent class are not inherited with View Engine. The 'cdk-tree' class in CdkTreeNode has
	// to be set in the host because:
	// if it is set as a @HostBinding it is not set by the time the tree nodes try to read the
	// class from it.
	// the ElementRef is not available in the constructor so the class can't be applied directly
	// without a breaking constructor change.
	'class': 'mat-tree cdk-tree',
	'role': 'tree',
	},
	encapsulation: ViewEncapsulation.None,
	// See note on CdkTree for explanation on why this uses the default change detection strategy.
	// tslint:disable-next-line:validate-decorators
	changeDetection: ChangeDetectionStrategy.Default,
	providers: [{ provide: CdkTree, useExisting: MatTree }],
	styles: [".mat-tree{display:block}.mat-tree-node{display:flex;align-items:center;flex:1;word-wrap:break-word}.mat-nested-tree-node{border-bottom-width:0}\n"]
	},] }
	];
	MatTree.propDecorators = {
	_nodeOutlet: [{ type: ViewChild, args: [MatTreeNodeOutlet, { static: true },] }]
	};

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Wrapper for the CdkTree's toggle with Material design styles.
	*/
	// tslint:disable-next-line: coercion-types
	class MatTreeNodeToggle extends CdkTreeNodeToggle {
	get recursive() { return this._recursive; }
	set recursive(value) {
	// TODO: when we remove support for ViewEngine, change this setter to an input
	// alias in the decorator metadata.
	this._recursive = coerceBooleanProperty(value);
	}
	}
	MatTreeNodeToggle.decorators = [
	{ type: Directive, args: [{
	selector: '[matTreeNodeToggle]',
	providers: [{ provide: CdkTreeNodeToggle, useExisting: MatTreeNodeToggle }]
	},] }
	];
	MatTreeNodeToggle.propDecorators = {
	recursive: [{ type: Input, args: ['matTreeNodeToggleRecursive',] }]
	};

	/**
	* @license
	* Copyright Google LLC 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
	*/
	const MAT_TREE_DIRECTIVES = [
	MatNestedTreeNode,
	MatTreeNodeDef,
	MatTreeNodePadding,
	MatTreeNodeToggle,
	MatTree,
	MatTreeNode,
	MatTreeNodeOutlet
	];
	class MatTreeModule {
	}
	MatTreeModule.decorators = [
	{ type: NgModule, args: [{
	imports: [CdkTreeModule, MatCommonModule],
	exports: [MatCommonModule, MAT_TREE_DIRECTIVES],
	declarations: MAT_TREE_DIRECTIVES,
	},] }
	];

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Tree flattener to convert a normal type of node to node with children & level information.
	* Transform nested nodes of type `T` to flattened nodes of type `F`.
	*
	* For example, the input data of type `T` is nested, and contains its children data:
	* SomeNode: {
	* key: 'Fruits',
	* children: [
	* NodeOne: {
	* key: 'Apple',
	* },
	* NodeTwo: {
	* key: 'Pear',
	* }
	* ]
	* }
	* After flattener flatten the tree, the structure will become
	* SomeNode: {
	* key: 'Fruits',
	* expandable: true,
	* level: 1
	* },
	* NodeOne: {
	* key: 'Apple',
	* expandable: false,
	* level: 2
	* },
	* NodeTwo: {
	* key: 'Pear',
	* expandable: false,
	* level: 2
	* }
	* and the output flattened type is `F` with additional information.
	*/
	class MatTreeFlattener {
	constructor(transformFunction, getLevel, isExpandable, getChildren) {
	this.transformFunction = transformFunction;
	this.getLevel = getLevel;
	this.isExpandable = isExpandable;
	this.getChildren = getChildren;
	}
	_flattenNode(node, level, resultNodes, parentMap) {
	const flatNode = this.transformFunction(node, level);
	resultNodes.push(flatNode);
	if (this.isExpandable(flatNode)) {
	const childrenNodes = this.getChildren(node);
	if (childrenNodes) {
	if (Array.isArray(childrenNodes)) {
	this._flattenChildren(childrenNodes, level, resultNodes, parentMap);
	}
	else {
	childrenNodes.pipe(take(1)).subscribe(children => {
	this._flattenChildren(children, level, resultNodes, parentMap);
	});
	}
	}
	}
	return resultNodes;
	}
	_flattenChildren(children, level, resultNodes, parentMap) {
	children.forEach((child, index) => {
	let childParentMap = parentMap.slice();
	childParentMap.push(index != children.length - 1);
	this._flattenNode(child, level + 1, resultNodes, childParentMap);
	});
	}
	/**
	* Flatten a list of node type T to flattened version of node F.
	* Please note that type T may be nested, and the length of `structuredData` may be different
	* from that of returned list `F[]`.
	*/
	flattenNodes(structuredData) {
	let resultNodes = [];
	structuredData.forEach(node => this._flattenNode(node, 0, resultNodes, []));
	return resultNodes;
	}
	/**
	* Expand flattened node with current expansion status.
	* The returned list may have different length.
	*/
	expandFlattenedNodes(nodes, treeControl) {
	let results = [];
	let currentExpand = [];
	currentExpand[0] = true;
	nodes.forEach(node => {
	let expand = true;
	for (let i = 0; i <= this.getLevel(node); i++) {
	expand = expand && currentExpand[i];
	}
	if (expand) {
	results.push(node);
	}
	if (this.isExpandable(node)) {
	currentExpand[this.getLevel(node) + 1] = treeControl.isExpanded(node);
	}
	});
	return results;
	}
	}
	/**
	* Data source for flat tree.
	* The data source need to handle expansion/collapsion of the tree node and change the data feed
	* to `MatTree`.
	* The nested tree nodes of type `T` are flattened through `MatTreeFlattener`, and converted
	* to type `F` for `MatTree` to consume.
	*/
	class MatTreeFlatDataSource extends DataSource {
	constructor(_treeControl, _treeFlattener, initialData = []) {
	super();
	this._treeControl = _treeControl;
	this._treeFlattener = _treeFlattener;
	this._flattenedData = new BehaviorSubject([]);
	this._expandedData = new BehaviorSubject([]);
	this._data = new BehaviorSubject(initialData);
	}
	get data() { return this._data.value; }
	set data(value) {
	this._data.next(value);
	this._flattenedData.next(this._treeFlattener.flattenNodes(this.data));
	this._treeControl.dataNodes = this._flattenedData.value;
	}
	connect(collectionViewer) {
	const changes = [
	collectionViewer.viewChange,
	this._treeControl.expansionModel.changed,
	this._flattenedData
	];
	return merge(...changes).pipe(map(() => {
	this._expandedData.next(this._treeFlattener.expandFlattenedNodes(this._flattenedData.value, this._treeControl));
	return this._expandedData.value;
	}));
	}
	disconnect() {
	// no op
	}
	}

	/**
	* @license
	* Copyright Google LLC 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
	*/
	/**
	* Data source for nested tree.
	*
	* The data source for nested tree doesn't have to consider node flattener, or the way to expand
	* or collapse. The expansion/collapsion will be handled by TreeControl and each non-leaf node.
	*/
	class MatTreeNestedDataSource extends DataSource {
	constructor() {
	super(...arguments);
	this._data = new BehaviorSubject([]);
	}
	/**
	* Data for the nested tree
	*/
	get data() { return this._data.value; }
	set data(value) { this._data.next(value); }
	connect(collectionViewer) {
	return merge(...[collectionViewer.viewChange, this._data])
	.pipe(map(() => {
	return this.data;
	}));
	}
	disconnect() {
	// no op
	}
	}

	/**
	* @license
	* Copyright Google LLC 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
	*/

	/**
	* Generated bundle index. Do not edit.
	*/

	export { MatNestedTreeNode, MatTree, MatTreeFlatDataSource, MatTreeFlattener, MatTreeModule, MatTreeNestedDataSource, MatTreeNode, MatTreeNodeDef, MatTreeNodeOutlet, MatTreeNodePadding, MatTreeNodeToggle };
	//# sourceMappingURL=tree.js.map