import { SelectionModel, isDataSource } from '@angular/cdk/collections';
import { isObservable, Subject, BehaviorSubject, of } from 'rxjs';
import { take, filter, takeUntil } from 'rxjs/operators';
import * as i0 from '@angular/core';
import { InjectionToken, Directive, Inject, Optional, Component, ViewEncapsulation, ChangeDetectionStrategy, Input, ViewChild, ContentChildren, NgModule } from '@angular/core';
import { coerceNumberProperty, coerceBooleanProperty } from '@angular/cdk/coercion';
import * as i2 from '@angular/cdk/bidi';
/** Base tree control. It has basic toggle/expand/collapse operations on a single data node. */
class BaseTreeControl {
constructor() {
/** A selection model with multi-selection to track expansion status. */
this.expansionModel = new SelectionModel(true);
}
/** Toggles one single data node's expanded/collapsed state. */
toggle(dataNode) {
this.expansionModel.toggle(this._trackByValue(dataNode));
}
/** Expands one single data node. */
expand(dataNode) {
this.expansionModel.select(this._trackByValue(dataNode));
}
/** Collapses one single data node. */
collapse(dataNode) {
this.expansionModel.deselect(this._trackByValue(dataNode));
}
/** Whether a given data node is expanded or not. Returns true if the data node is expanded. */
isExpanded(dataNode) {
return this.expansionModel.isSelected(this._trackByValue(dataNode));
}
/** Toggles a subtree rooted at `node` recursively. */
toggleDescendants(dataNode) {
this.expansionModel.isSelected(this._trackByValue(dataNode))
? this.collapseDescendants(dataNode)
: this.expandDescendants(dataNode);
}
/** Collapse all dataNodes in the tree. */
collapseAll() {
this.expansionModel.clear();
}
/** Expands a subtree rooted at given data node recursively. */
expandDescendants(dataNode) {
let toBeProcessed = [dataNode];
toBeProcessed.push(...this.getDescendants(dataNode));
this.expansionModel.select(...toBeProcessed.map(value => this._trackByValue(value)));
}
/** Collapses a subtree rooted at given data node recursively. */
collapseDescendants(dataNode) {
let toBeProcessed = [dataNode];
toBeProcessed.push(...this.getDescendants(dataNode));
this.expansionModel.deselect(...toBeProcessed.map(value => this._trackByValue(value)));
}
_trackByValue(value) {
return this.trackBy ? this.trackBy(value) : value;
}
}
/** Flat tree control. Able to expand/collapse a subtree recursively for flattened tree. */
class FlatTreeControl extends BaseTreeControl {
/** Construct with flat tree data node functions getLevel and isExpandable. */
constructor(getLevel, isExpandable, options) {
super();
this.getLevel = getLevel;
this.isExpandable = isExpandable;
this.options = options;
if (this.options) {
this.trackBy = this.options.trackBy;
}
}
/**
* Gets a list of the data node's subtree of descendent data nodes.
*
* To make this working, the `dataNodes` of the TreeControl must be flattened tree nodes
* with correct levels.
*/
getDescendants(dataNode) {
const startIndex = this.dataNodes.indexOf(dataNode);
const results = [];
// Goes through flattened tree nodes in the `dataNodes` array, and get all descendants.
// The level of descendants of a tree node must be greater than the level of the given
// tree node.
// If we reach a node whose level is equal to the level of the tree node, we hit a sibling.
// If we reach a node whose level is greater than the level of the tree node, we hit a
// sibling of an ancestor.
for (let i = startIndex + 1; i < this.dataNodes.length && this.getLevel(dataNode) < this.getLevel(this.dataNodes[i]); i++) {
results.push(this.dataNodes[i]);
}
return results;
}
/**
* Expands all data nodes in the tree.
*
* To make this working, the `dataNodes` variable of the TreeControl must be set to all flattened
* data nodes of the tree.
*/
expandAll() {
this.expansionModel.select(...this.dataNodes.map(node => this._trackByValue(node)));
}
}
/** Nested tree control. Able to expand/collapse a subtree recursively for NestedNode type. */
class NestedTreeControl extends BaseTreeControl {
/** Construct with nested tree function getChildren. */
constructor(getChildren, options) {
super();
this.getChildren = getChildren;
this.options = options;
if (this.options) {
this.trackBy = this.options.trackBy;
}
}
/**
* Expands all dataNodes in the tree.
*
* To make this working, the `dataNodes` variable of the TreeControl must be set to all root level
* data nodes of the tree.
*/
expandAll() {
this.expansionModel.clear();
const allNodes = this.dataNodes.reduce((accumulator, dataNode) => [...accumulator, ...this.getDescendants(dataNode), dataNode], []);
this.expansionModel.select(...allNodes.map(node => this._trackByValue(node)));
}
/** Gets a list of descendant dataNodes of a subtree rooted at given data node recursively. */
getDescendants(dataNode) {
const descendants = [];
this._getDescendants(descendants, dataNode);
// Remove the node itself
return descendants.splice(1);
}
/** A helper function to get descendants recursively. */
_getDescendants(descendants, dataNode) {
descendants.push(dataNode);
const childrenNodes = this.getChildren(dataNode);
if (Array.isArray(childrenNodes)) {
childrenNodes.forEach((child) => this._getDescendants(descendants, child));
}
else if (isObservable(childrenNodes)) {
// TypeScript as of version 3.5 doesn't seem to treat `Boolean` like a function that
// returns a `boolean` specifically in the context of `filter`, so we manually clarify that.
childrenNodes.pipe(take(1), filter(Boolean)).subscribe(children => {
for (const child of children) {
this._getDescendants(descendants, child);
}
});
}
}
}
/**
* Injection token used to provide a `CdkTreeNode` to its outlet.
* Used primarily to avoid circular imports.
* @docs-private
*/
const CDK_TREE_NODE_OUTLET_NODE = new InjectionToken('CDK_TREE_NODE_OUTLET_NODE');
/**
* Outlet for nested CdkNode. Put `[cdkTreeNodeOutlet]` on a tag to place children dataNodes
* inside the outlet.
*/
class CdkTreeNodeOutlet {
constructor(viewContainer, _node) {
this.viewContainer = viewContainer;
this._node = _node;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeOutlet, deps: [{ token: i0.ViewContainerRef }, { token: CDK_TREE_NODE_OUTLET_NODE, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkTreeNodeOutlet, selector: "[cdkTreeNodeOutlet]", ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeOutlet, decorators: [{
type: Directive,
args: [{
selector: '[cdkTreeNodeOutlet]',
}]
}], ctorParameters: function () { return [{ type: i0.ViewContainerRef }, { type: undefined, decorators: [{
type: Inject,
args: [CDK_TREE_NODE_OUTLET_NODE]
}, {
type: Optional
}] }]; } });
/** Context provided to the tree node component. */
class CdkTreeNodeOutletContext {
constructor(data) {
this.$implicit = data;
}
}
/**
* Data node definition for the CdkTree.
* Captures the node's template and a when predicate that describes when this node should be used.
*/
class CdkTreeNodeDef {
/** @docs-private */
constructor(template) {
this.template = template;
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeDef, deps: [{ token: i0.TemplateRef }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkTreeNodeDef, selector: "[cdkTreeNodeDef]", inputs: { when: ["cdkTreeNodeDefWhen", "when"] }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeDef, decorators: [{
type: Directive,
args: [{
selector: '[cdkTreeNodeDef]',
inputs: ['when: cdkTreeNodeDefWhen'],
}]
}], ctorParameters: function () { return [{ type: i0.TemplateRef }]; } });
/**
* Returns an error to be thrown when there is no usable data.
* @docs-private
*/
function getTreeNoValidDataSourceError() {
return Error(`A valid data source must be provided.`);
}
/**
* Returns an error to be thrown when there are multiple nodes that are missing a when function.
* @docs-private
*/
function getTreeMultipleDefaultNodeDefsError() {
return Error(`There can only be one default row without a when predicate function.`);
}
/**
* Returns an error to be thrown when there are no matching node defs for a particular set of data.
* @docs-private
*/
function getTreeMissingMatchingNodeDefError() {
return Error(`Could not find a matching node definition for the provided node data.`);
}
/**
* Returns an error to be thrown when there are tree control.
* @docs-private
*/
function getTreeControlMissingError() {
return Error(`Could not find a tree control for the tree.`);
}
/**
* Returns an error to be thrown when tree control did not implement functions for flat/nested node.
* @docs-private
*/
function getTreeControlFunctionsMissingError() {
return Error(`Could not find functions for nested/flat tree in tree control.`);
}
/**
* CDK tree component that connects with a data source to retrieve data of type `T` and renders
* dataNodes with hierarchy. Updates the dataNodes when new data is provided by the data source.
*/
class CdkTree {
/**
* Provides a stream containing the latest data array to render. Influenced by the tree's
* stream of view window (what dataNodes are currently on screen).
* Data source can be an observable of data array, or a data array to render.
*/
get dataSource() {
return this._dataSource;
}
set dataSource(dataSource) {
if (this._dataSource !== dataSource) {
this._switchDataSource(dataSource);
}
}
constructor(_differs, _changeDetectorRef) {
this._differs = _differs;
this._changeDetectorRef = _changeDetectorRef;
/** Subject that emits when the component has been destroyed. */
this._onDestroy = new Subject();
/** Level of nodes */
this._levels = new Map();
// TODO(tinayuangao): Setup a listener for scrolling, emit the calculated view to viewChange.
// Remove the MAX_VALUE in viewChange
/**
* Stream containing the latest information on what rows are being displayed on screen.
* Can be used by the data source to as a heuristic of what data should be provided.
*/
this.viewChange = new BehaviorSubject({
start: 0,
end: Number.MAX_VALUE,
});
}
ngOnInit() {
this._dataDiffer = this._differs.find([]).create(this.trackBy);
if (!this.treeControl && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw getTreeControlMissingError();
}
}
ngOnDestroy() {
this._nodeOutlet.viewContainer.clear();
this.viewChange.complete();
this._onDestroy.next();
this._onDestroy.complete();
if (this._dataSource && typeof this._dataSource.disconnect === 'function') {
this.dataSource.disconnect(this);
}
if (this._dataSubscription) {
this._dataSubscription.unsubscribe();
this._dataSubscription = null;
}
}
ngAfterContentChecked() {
const defaultNodeDefs = this._nodeDefs.filter(def => !def.when);
if (defaultNodeDefs.length > 1 && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw getTreeMultipleDefaultNodeDefsError();
}
this._defaultNodeDef = defaultNodeDefs[0];
if (this.dataSource && this._nodeDefs && !this._dataSubscription) {
this._observeRenderChanges();
}
}
// TODO(tinayuangao): Work on keyboard traversal and actions, make sure it's working for RTL
// and nested trees.
/**
* Switch to the provided data source by resetting the data and unsubscribing from the current
* render change subscription if one exists. If the data source is null, interpret this by
* clearing the node outlet. Otherwise start listening for new data.
*/
_switchDataSource(dataSource) {
if (this._dataSource && typeof this._dataSource.disconnect === 'function') {
this.dataSource.disconnect(this);
}
if (this._dataSubscription) {
this._dataSubscription.unsubscribe();
this._dataSubscription = null;
}
// Remove the all dataNodes if there is now no data source
if (!dataSource) {
this._nodeOutlet.viewContainer.clear();
}
this._dataSource = dataSource;
if (this._nodeDefs) {
this._observeRenderChanges();
}
}
/** Set up a subscription for the data provided by the data source. */
_observeRenderChanges() {
let dataStream;
if (isDataSource(this._dataSource)) {
dataStream = this._dataSource.connect(this);
}
else if (isObservable(this._dataSource)) {
dataStream = this._dataSource;
}
else if (Array.isArray(this._dataSource)) {
dataStream = of(this._dataSource);
}
if (dataStream) {
this._dataSubscription = dataStream
.pipe(takeUntil(this._onDestroy))
.subscribe(data => this.renderNodeChanges(data));
}
else if (typeof ngDevMode === 'undefined' || ngDevMode) {
throw getTreeNoValidDataSourceError();
}
}
/** Check for changes made in the data and render each change (node added/removed/moved). */
renderNodeChanges(data, dataDiffer = this._dataDiffer, viewContainer = this._nodeOutlet.viewContainer, parentData) {
const changes = dataDiffer.diff(data);
if (!changes) {
return;
}
changes.forEachOperation((item, adjustedPreviousIndex, currentIndex) => {
if (item.previousIndex == null) {
this.insertNode(data[currentIndex], currentIndex, viewContainer, parentData);
}
else if (currentIndex == null) {
viewContainer.remove(adjustedPreviousIndex);
this._levels.delete(item.item);
}
else {
const view = viewContainer.get(adjustedPreviousIndex);
viewContainer.move(view, currentIndex);
}
});
this._changeDetectorRef.detectChanges();
}
/**
* Finds the matching node definition that should be used for this node data. If there is only
* one node definition, it is returned. Otherwise, find the node definition that has a when
* predicate that returns true with the data. If none return true, return the default node
* definition.
*/
_getNodeDef(data, i) {
if (this._nodeDefs.length === 1) {
return this._nodeDefs.first;
}
const nodeDef = this._nodeDefs.find(def => def.when && def.when(i, data)) || this._defaultNodeDef;
if (!nodeDef && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw getTreeMissingMatchingNodeDefError();
}
return nodeDef;
}
/**
* Create the embedded view for the data node template and place it in the correct index location
* within the data node view container.
*/
insertNode(nodeData, index, viewContainer, parentData) {
const node = this._getNodeDef(nodeData, index);
// Node context that will be provided to created embedded view
const context = new CdkTreeNodeOutletContext(nodeData);
// If the tree is flat tree, then use the `getLevel` function in flat tree control
// Otherwise, use the level of parent node.
if (this.treeControl.getLevel) {
context.level = this.treeControl.getLevel(nodeData);
}
else if (typeof parentData !== 'undefined' && this._levels.has(parentData)) {
context.level = this._levels.get(parentData) + 1;
}
else {
context.level = 0;
}
this._levels.set(nodeData, context.level);
// Use default tree nodeOutlet, or nested node's nodeOutlet
const container = viewContainer ? viewContainer : this._nodeOutlet.viewContainer;
container.createEmbeddedView(node.template, context, index);
// Set the data to just created `CdkTreeNode`.
// The `CdkTreeNode` created from `createEmbeddedView` will be saved in static variable
// `mostRecentTreeNode`. We get it from static variable and pass the node data to it.
if (CdkTreeNode.mostRecentTreeNode) {
CdkTreeNode.mostRecentTreeNode.data = nodeData;
}
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTree, deps: [{ token: i0.IterableDiffers }, { token: i0.ChangeDetectorRef }], target: i0.ɵɵFactoryTarget.Component }); }
static { this.ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "16.1.1", type: CdkTree, selector: "cdk-tree", inputs: { dataSource: "dataSource", treeControl: "treeControl", trackBy: "trackBy" }, host: { attributes: { "role": "tree" }, classAttribute: "cdk-tree" }, queries: [{ propertyName: "_nodeDefs", predicate: CdkTreeNodeDef, descendants: true }], viewQueries: [{ propertyName: "_nodeOutlet", first: true, predicate: CdkTreeNodeOutlet, descendants: true, static: true }], exportAs: ["cdkTree"], ngImport: i0, template: ``, isInline: true, dependencies: [{ kind: "directive", type: CdkTreeNodeOutlet, selector: "[cdkTreeNodeOutlet]" }], changeDetection: i0.ChangeDetectionStrategy.Default, encapsulation: i0.ViewEncapsulation.None }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTree, decorators: [{
type: Component,
args: [{
selector: 'cdk-tree',
exportAs: 'cdkTree',
template: ``,
host: {
'class': 'cdk-tree',
'role': 'tree',
},
encapsulation: ViewEncapsulation.None,
// The "OnPush" status for the `CdkTree` component is effectively a noop, so we are removing it.
// The view for `CdkTree` consists entirely of templates declared in other views. As they are
// declared elsewhere, they are checked when their declaration points are checked.
// tslint:disable-next-line:validate-decorators
changeDetection: ChangeDetectionStrategy.Default,
}]
}], ctorParameters: function () { return [{ type: i0.IterableDiffers }, { type: i0.ChangeDetectorRef }]; }, propDecorators: { dataSource: [{
type: Input
}], treeControl: [{
type: Input
}], trackBy: [{
type: Input
}], _nodeOutlet: [{
type: ViewChild,
args: [CdkTreeNodeOutlet, { static: true }]
}], _nodeDefs: [{
type: ContentChildren,
args: [CdkTreeNodeDef, {
// We need to use `descendants: true`, because Ivy will no longer match
// indirect descendants if it's left as false.
descendants: true,
}]
}] } });
/**
* Tree node for CdkTree. It contains the data in the tree node.
*/
class CdkTreeNode {
/**
* The role of the tree node.
* @deprecated The correct role is 'treeitem', 'group' should not be used. This input will be
* removed in a future version.
* @breaking-change 12.0.0 Remove this input
*/
get role() {
return 'treeitem';
}
set role(_role) {
// TODO: move to host after View Engine deprecation
this._elementRef.nativeElement.setAttribute('role', _role);
}
/**
* The most recently created `CdkTreeNode`. We save it in static variable so we can retrieve it
* in `CdkTree` and set the data to it.
*/
static { this.mostRecentTreeNode = null; }
/** The tree node's data. */
get data() {
return this._data;
}
set data(value) {
if (value !== this._data) {
this._data = value;
this._setRoleFromData();
this._dataChanges.next();
}
}
get isExpanded() {
return this._tree.treeControl.isExpanded(this._data);
}
get level() {
// If the treeControl has a getLevel method, use it to get the level. Otherwise read the
// aria-level off the parent node and use it as the level for this node (note aria-level is
// 1-indexed, while this property is 0-indexed, so we don't need to increment).
return this._tree.treeControl.getLevel
? this._tree.treeControl.getLevel(this._data)
: this._parentNodeAriaLevel;
}
constructor(_elementRef, _tree) {
this._elementRef = _elementRef;
this._tree = _tree;
/** Subject that emits when the component has been destroyed. */
this._destroyed = new Subject();
/** Emits when the node's data has changed. */
this._dataChanges = new Subject();
CdkTreeNode.mostRecentTreeNode = this;
this.role = 'treeitem';
}
ngOnInit() {
this._parentNodeAriaLevel = getParentNodeAriaLevel(this._elementRef.nativeElement);
this._elementRef.nativeElement.setAttribute('aria-level', `${this.level + 1}`);
}
ngOnDestroy() {
// If this is the last tree node being destroyed,
// clear out the reference to avoid leaking memory.
if (CdkTreeNode.mostRecentTreeNode === this) {
CdkTreeNode.mostRecentTreeNode = null;
}
this._dataChanges.complete();
this._destroyed.next();
this._destroyed.complete();
}
/** Focuses the menu item. Implements for FocusableOption. */
focus() {
this._elementRef.nativeElement.focus();
}
// TODO: role should eventually just be set in the component host
_setRoleFromData() {
if (!this._tree.treeControl.isExpandable &&
!this._tree.treeControl.getChildren &&
(typeof ngDevMode === 'undefined' || ngDevMode)) {
throw getTreeControlFunctionsMissingError();
}
this.role = 'treeitem';
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNode, deps: [{ token: i0.ElementRef }, { token: CdkTree }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkTreeNode, selector: "cdk-tree-node", inputs: { role: "role" }, host: { properties: { "attr.aria-expanded": "isExpanded" }, classAttribute: "cdk-tree-node" }, exportAs: ["cdkTreeNode"], ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNode, decorators: [{
type: Directive,
args: [{
selector: 'cdk-tree-node',
exportAs: 'cdkTreeNode',
host: {
'class': 'cdk-tree-node',
'[attr.aria-expanded]': 'isExpanded',
},
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: CdkTree }]; }, propDecorators: { role: [{
type: Input
}] } });
function getParentNodeAriaLevel(nodeElement) {
let parent = nodeElement.parentElement;
while (parent && !isNodeElement(parent)) {
parent = parent.parentElement;
}
if (!parent) {
if (typeof ngDevMode === 'undefined' || ngDevMode) {
throw Error('Incorrect tree structure containing detached node.');
}
else {
return -1;
}
}
else if (parent.classList.contains('cdk-nested-tree-node')) {
return coerceNumberProperty(parent.getAttribute('aria-level'));
}
else {
// The ancestor element is the cdk-tree itself
return 0;
}
}
function isNodeElement(element) {
const classList = element.classList;
return !!(classList?.contains('cdk-nested-tree-node') || classList?.contains('cdk-tree'));
}
/**
* Nested node is a child of ``. It works with nested tree.
* By using `cdk-nested-tree-node` component in tree node template, children of the parent node will
* be added in the `cdkTreeNodeOutlet` in tree node template.
* The children of node will be automatically added to `cdkTreeNodeOutlet`.
*/
class CdkNestedTreeNode extends CdkTreeNode {
constructor(elementRef, tree, _differs) {
super(elementRef, tree);
this._differs = _differs;
}
ngAfterContentInit() {
this._dataDiffer = this._differs.find([]).create(this._tree.trackBy);
if (!this._tree.treeControl.getChildren && (typeof ngDevMode === 'undefined' || ngDevMode)) {
throw getTreeControlFunctionsMissingError();
}
const childrenNodes = this._tree.treeControl.getChildren(this.data);
if (Array.isArray(childrenNodes)) {
this.updateChildrenNodes(childrenNodes);
}
else if (isObservable(childrenNodes)) {
childrenNodes
.pipe(takeUntil(this._destroyed))
.subscribe(result => this.updateChildrenNodes(result));
}
this.nodeOutlet.changes
.pipe(takeUntil(this._destroyed))
.subscribe(() => this.updateChildrenNodes());
}
// 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();
}
ngOnDestroy() {
this._clear();
super.ngOnDestroy();
}
/** Add children dataNodes to the NodeOutlet */
updateChildrenNodes(children) {
const outlet = this._getNodeOutlet();
if (children) {
this._children = children;
}
if (outlet && this._children) {
const viewContainer = outlet.viewContainer;
this._tree.renderNodeChanges(this._children, this._dataDiffer, viewContainer, this._data);
}
else {
// Reset the data differ if there's no children nodes displayed
this._dataDiffer.diff([]);
}
}
/** Clear the children dataNodes. */
_clear() {
const outlet = this._getNodeOutlet();
if (outlet) {
outlet.viewContainer.clear();
this._dataDiffer.diff([]);
}
}
/** Gets the outlet for the current node. */
_getNodeOutlet() {
const outlets = this.nodeOutlet;
// Note that since we use `descendants: true` on the query, we have to ensure
// that we don't pick up the outlet of a child node by accident.
return outlets && outlets.find(outlet => !outlet._node || outlet._node === this);
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkNestedTreeNode, deps: [{ token: i0.ElementRef }, { token: CdkTree }, { token: i0.IterableDiffers }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkNestedTreeNode, selector: "cdk-nested-tree-node", inputs: { role: "role", disabled: "disabled", tabIndex: "tabIndex" }, host: { classAttribute: "cdk-nested-tree-node" }, providers: [
{ provide: CdkTreeNode, useExisting: CdkNestedTreeNode },
{ provide: CDK_TREE_NODE_OUTLET_NODE, useExisting: CdkNestedTreeNode },
], queries: [{ propertyName: "nodeOutlet", predicate: CdkTreeNodeOutlet, descendants: true }], exportAs: ["cdkNestedTreeNode"], usesInheritance: true, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkNestedTreeNode, decorators: [{
type: Directive,
args: [{
selector: 'cdk-nested-tree-node',
exportAs: 'cdkNestedTreeNode',
inputs: ['role', 'disabled', 'tabIndex'],
providers: [
{ provide: CdkTreeNode, useExisting: CdkNestedTreeNode },
{ provide: CDK_TREE_NODE_OUTLET_NODE, useExisting: CdkNestedTreeNode },
],
host: {
'class': 'cdk-nested-tree-node',
},
}]
}], ctorParameters: function () { return [{ type: i0.ElementRef }, { type: CdkTree }, { type: i0.IterableDiffers }]; }, propDecorators: { nodeOutlet: [{
type: ContentChildren,
args: [CdkTreeNodeOutlet, {
// We need to use `descendants: true`, because Ivy will no longer match
// indirect descendants if it's left as false.
descendants: true,
}]
}] } });
/** Regex used to split a string on its CSS units. */
const cssUnitPattern = /([A-Za-z%]+)$/;
/**
* Indent for the children tree dataNodes.
* This directive will add left-padding to the node to show hierarchy.
*/
class CdkTreeNodePadding {
/** The level of depth of the tree node. The padding will be `level * indent` pixels. */
get level() {
return this._level;
}
set level(value) {
this._setLevelInput(value);
}
/**
* The indent for each level. Can be a number or a CSS string.
* Default number 40px from material design menu sub-menu spec.
*/
get indent() {
return this._indent;
}
set indent(indent) {
this._setIndentInput(indent);
}
constructor(_treeNode, _tree, _element, _dir) {
this._treeNode = _treeNode;
this._tree = _tree;
this._element = _element;
this._dir = _dir;
/** Subject that emits when the component has been destroyed. */
this._destroyed = new Subject();
/** CSS units used for the indentation value. */
this.indentUnits = 'px';
this._indent = 40;
this._setPadding();
if (_dir) {
_dir.change.pipe(takeUntil(this._destroyed)).subscribe(() => this._setPadding(true));
}
// In Ivy the indentation binding might be set before the tree node's data has been added,
// which means that we'll miss the first render. We have to subscribe to changes in the
// data to ensure that everything is up to date.
_treeNode._dataChanges.subscribe(() => this._setPadding());
}
ngOnDestroy() {
this._destroyed.next();
this._destroyed.complete();
}
/** The padding indent value for the tree node. Returns a string with px numbers if not null. */
_paddingIndent() {
const nodeLevel = this._treeNode.data && this._tree.treeControl.getLevel
? this._tree.treeControl.getLevel(this._treeNode.data)
: null;
const level = this._level == null ? nodeLevel : this._level;
return typeof level === 'number' ? `${level * this._indent}${this.indentUnits}` : null;
}
_setPadding(forceChange = false) {
const padding = this._paddingIndent();
if (padding !== this._currentPadding || forceChange) {
const element = this._element.nativeElement;
const paddingProp = this._dir && this._dir.value === 'rtl' ? 'paddingRight' : 'paddingLeft';
const resetProp = paddingProp === 'paddingLeft' ? 'paddingRight' : 'paddingLeft';
element.style[paddingProp] = padding || '';
element.style[resetProp] = '';
this._currentPadding = padding;
}
}
/**
* This has been extracted to a util because of TS 4 and VE.
* View Engine doesn't support property rename inheritance.
* TS 4.0 doesn't allow properties to override accessors or vice-versa.
* @docs-private
*/
_setLevelInput(value) {
// Set to null as the fallback value so that _setPadding can fall back to the node level if the
// consumer set the directive as `cdkTreeNodePadding=""`. We still want to take this value if
// they set 0 explicitly.
this._level = coerceNumberProperty(value, null);
this._setPadding();
}
/**
* This has been extracted to a util because of TS 4 and VE.
* View Engine doesn't support property rename inheritance.
* TS 4.0 doesn't allow properties to override accessors or vice-versa.
* @docs-private
*/
_setIndentInput(indent) {
let value = indent;
let units = 'px';
if (typeof indent === 'string') {
const parts = indent.split(cssUnitPattern);
value = parts[0];
units = parts[1] || units;
}
this.indentUnits = units;
this._indent = coerceNumberProperty(value);
this._setPadding();
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodePadding, deps: [{ token: CdkTreeNode }, { token: CdkTree }, { token: i0.ElementRef }, { token: i2.Directionality, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkTreeNodePadding, selector: "[cdkTreeNodePadding]", inputs: { level: ["cdkTreeNodePadding", "level"], indent: ["cdkTreeNodePaddingIndent", "indent"] }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodePadding, decorators: [{
type: Directive,
args: [{
selector: '[cdkTreeNodePadding]',
}]
}], ctorParameters: function () { return [{ type: CdkTreeNode }, { type: CdkTree }, { type: i0.ElementRef }, { type: i2.Directionality, decorators: [{
type: Optional
}] }]; }, propDecorators: { level: [{
type: Input,
args: ['cdkTreeNodePadding']
}], indent: [{
type: Input,
args: ['cdkTreeNodePaddingIndent']
}] } });
/**
* Node toggle to expand/collapse the node.
*/
class CdkTreeNodeToggle {
/** Whether expand/collapse the node recursively. */
get recursive() {
return this._recursive;
}
set recursive(value) {
this._recursive = coerceBooleanProperty(value);
}
constructor(_tree, _treeNode) {
this._tree = _tree;
this._treeNode = _treeNode;
this._recursive = false;
}
_toggle(event) {
this.recursive
? this._tree.treeControl.toggleDescendants(this._treeNode.data)
: this._tree.treeControl.toggle(this._treeNode.data);
event.stopPropagation();
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeToggle, deps: [{ token: CdkTree }, { token: CdkTreeNode }], target: i0.ɵɵFactoryTarget.Directive }); }
static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkTreeNodeToggle, selector: "[cdkTreeNodeToggle]", inputs: { recursive: ["cdkTreeNodeToggleRecursive", "recursive"] }, host: { listeners: { "click": "_toggle($event)" } }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeNodeToggle, decorators: [{
type: Directive,
args: [{
selector: '[cdkTreeNodeToggle]',
host: {
'(click)': '_toggle($event)',
},
}]
}], ctorParameters: function () { return [{ type: CdkTree }, { type: CdkTreeNode }]; }, propDecorators: { recursive: [{
type: Input,
args: ['cdkTreeNodeToggleRecursive']
}] } });
const EXPORTED_DECLARATIONS = [
CdkNestedTreeNode,
CdkTreeNodeDef,
CdkTreeNodePadding,
CdkTreeNodeToggle,
CdkTree,
CdkTreeNode,
CdkTreeNodeOutlet,
];
class CdkTreeModule {
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeModule, deps: [], target: i0.ɵɵFactoryTarget.NgModule }); }
static { this.ɵmod = i0.ɵɵngDeclareNgModule({ minVersion: "14.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeModule, declarations: [CdkNestedTreeNode,
CdkTreeNodeDef,
CdkTreeNodePadding,
CdkTreeNodeToggle,
CdkTree,
CdkTreeNode,
CdkTreeNodeOutlet], exports: [CdkNestedTreeNode,
CdkTreeNodeDef,
CdkTreeNodePadding,
CdkTreeNodeToggle,
CdkTree,
CdkTreeNode,
CdkTreeNodeOutlet] }); }
static { this.ɵinj = i0.ɵɵngDeclareInjector({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeModule }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkTreeModule, decorators: [{
type: NgModule,
args: [{
exports: EXPORTED_DECLARATIONS,
declarations: EXPORTED_DECLARATIONS,
}]
}] });
/**
* Generated bundle index. Do not edit.
*/
export { BaseTreeControl, CDK_TREE_NODE_OUTLET_NODE, CdkNestedTreeNode, CdkTree, CdkTreeModule, CdkTreeNode, CdkTreeNodeDef, CdkTreeNodeOutlet, CdkTreeNodeOutletContext, CdkTreeNodePadding, CdkTreeNodeToggle, FlatTreeControl, NestedTreeControl, getTreeControlFunctionsMissingError, getTreeControlMissingError, getTreeMissingMatchingNodeDefError, getTreeMultipleDefaultNodeDefsError, getTreeNoValidDataSourceError };
//# sourceMappingURL=tree.mjs.map