| import { SelectionModel, isDataSource } from '@angular/cdk/collections'; |
| import { isObservable, Subject, BehaviorSubject, of } from 'rxjs'; |
| import { take, filter, takeUntil } from 'rxjs/operators'; |
| import { InjectionToken, Directive, ViewContainerRef, Inject, Optional, TemplateRef, Component, ViewEncapsulation, ChangeDetectionStrategy, IterableDiffers, ChangeDetectorRef, Input, ViewChild, ContentChildren, ElementRef, HostListener, NgModule } from '@angular/core'; |
| import { coerceNumberProperty, coerceBooleanProperty } from '@angular/cdk/coercion'; |
| import { Directionality } from '@angular/cdk/bidi'; |
| |
| /** |
| * @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 |
| */ |
| /** 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; |
| } |
| } |
| |
| /** |
| * @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 |
| */ |
| /** 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))); |
| } |
| } |
| |
| /** |
| * @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 |
| */ |
| /** 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); |
| } |
| }); |
| } |
| } |
| } |
| |
| /** |
| * @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 |
| */ |
| /** |
| * 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; |
| } |
| } |
| CdkTreeNodeOutlet.decorators = [ |
| { type: Directive, args: [{ |
| selector: '[cdkTreeNodeOutlet]' |
| },] } |
| ]; |
| CdkTreeNodeOutlet.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 |
| */ |
| /** 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; |
| } |
| } |
| CdkTreeNodeDef.decorators = [ |
| { type: Directive, args: [{ |
| selector: '[cdkTreeNodeDef]', |
| inputs: [ |
| 'when: cdkTreeNodeDefWhen' |
| ], |
| },] } |
| ]; |
| CdkTreeNodeDef.ctorParameters = () => [ |
| { type: TemplateRef } |
| ]; |
| |
| /** |
| * @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 |
| */ |
| /** |
| * 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 { |
| 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 }); |
| } |
| /** |
| * 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); |
| } |
| } |
| 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; |
| } |
| } |
| } |
| CdkTree.decorators = [ |
| { type: Component, args: [{ |
| selector: 'cdk-tree', |
| exportAs: 'cdkTree', |
| template: `<ng-container cdkTreeNodeOutlet></ng-container>`, |
| 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 |
| },] } |
| ]; |
| CdkTree.ctorParameters = () => [ |
| { type: IterableDiffers }, |
| { type: ChangeDetectorRef } |
| ]; |
| CdkTree.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 { |
| 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; |
| // 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('cdk-tree-node'); |
| this.role = 'treeitem'; |
| } |
| /** |
| * 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 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); |
| } |
| _setExpanded(_expanded) { |
| this._isAriaExpanded = _expanded; |
| this._elementRef.nativeElement.setAttribute('aria-expanded', `${_expanded}`); |
| } |
| 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; |
| } |
| ngOnInit() { |
| this._parentNodeAriaLevel = getParentNodeAriaLevel(this._elementRef.nativeElement); |
| this._elementRef.nativeElement.setAttribute('aria-level', `${this.level + 1}`); |
| } |
| ngDoCheck() { |
| // aria-expanded is be set here because the expanded state is stored in the tree control and |
| // the node isn't aware when the state is changed. |
| // It is not set using a @HostBinding because they sometimes get lost with Mixin based classes. |
| // TODO: move to host after View Engine deprecation |
| if (this.isExpanded != this._isAriaExpanded) { |
| this._setExpanded(this.isExpanded); |
| } |
| } |
| 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'; |
| } |
| } |
| /** |
| * The most recently created `CdkTreeNode`. We save it in static variable so we can retrieve it |
| * in `CdkTree` and set the data to it. |
| */ |
| CdkTreeNode.mostRecentTreeNode = null; |
| CdkTreeNode.decorators = [ |
| { type: Directive, args: [{ |
| selector: 'cdk-tree-node', |
| exportAs: 'cdkTreeNode', |
| },] } |
| ]; |
| CdkTreeNode.ctorParameters = () => [ |
| { type: ElementRef }, |
| { type: CdkTree } |
| ]; |
| CdkTreeNode.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 === null || classList === void 0 ? void 0 : classList.contains('cdk-nested-tree-node')) || (classList === null || classList === void 0 ? void 0 : classList.contains('cdk-tree'))); |
| } |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Nested node is a child of `<cdk-tree>`. 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._elementRef = _elementRef; |
| this._tree = _tree; |
| this._differs = _differs; |
| // 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('cdk-nested-tree-node'); |
| } |
| 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(); |
| } |
| ngDoCheck() { |
| super.ngDoCheck(); |
| } |
| 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); |
| } |
| } |
| 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 } |
| ] |
| },] } |
| ]; |
| CdkNestedTreeNode.ctorParameters = () => [ |
| { type: ElementRef }, |
| { type: CdkTree }, |
| { type: IterableDiffers } |
| ]; |
| CdkNestedTreeNode.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 |
| },] }] |
| }; |
| |
| /** |
| * @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 |
| */ |
| /** 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 { |
| 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()); |
| } |
| /** 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); } |
| 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(); |
| } |
| } |
| CdkTreeNodePadding.decorators = [ |
| { type: Directive, args: [{ |
| selector: '[cdkTreeNodePadding]', |
| },] } |
| ]; |
| CdkTreeNodePadding.ctorParameters = () => [ |
| { type: CdkTreeNode }, |
| { type: CdkTree }, |
| { type: ElementRef }, |
| { type: Directionality, decorators: [{ type: Optional }] } |
| ]; |
| CdkTreeNodePadding.propDecorators = { |
| level: [{ type: Input, args: ['cdkTreeNodePadding',] }], |
| indent: [{ type: Input, args: ['cdkTreeNodePaddingIndent',] }] |
| }; |
| |
| /** |
| * @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 |
| */ |
| /** |
| * Node toggle to expand/collapse the node. |
| */ |
| class CdkTreeNodeToggle { |
| constructor(_tree, _treeNode) { |
| this._tree = _tree; |
| this._treeNode = _treeNode; |
| this._recursive = false; |
| } |
| /** Whether expand/collapse the node recursively. */ |
| get recursive() { return this._recursive; } |
| set recursive(value) { this._recursive = coerceBooleanProperty(value); } |
| // We have to use a `HostListener` here in order to support both Ivy and ViewEngine. |
| // In Ivy the `host` bindings will be merged when this class is extended, whereas in |
| // ViewEngine they're overwritten. |
| // TODO(crisbeto): we move this back into `host` once Ivy is turned on by default. |
| // tslint:disable-next-line:no-host-decorator-in-concrete |
| _toggle(event) { |
| this.recursive |
| ? this._tree.treeControl.toggleDescendants(this._treeNode.data) |
| : this._tree.treeControl.toggle(this._treeNode.data); |
| event.stopPropagation(); |
| } |
| } |
| CdkTreeNodeToggle.decorators = [ |
| { type: Directive, args: [{ selector: '[cdkTreeNodeToggle]' },] } |
| ]; |
| CdkTreeNodeToggle.ctorParameters = () => [ |
| { type: CdkTree }, |
| { type: CdkTreeNode } |
| ]; |
| CdkTreeNodeToggle.propDecorators = { |
| recursive: [{ type: Input, args: ['cdkTreeNodeToggleRecursive',] }], |
| _toggle: [{ type: HostListener, args: ['click', ['$event'],] }] |
| }; |
| |
| /** |
| * @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 EXPORTED_DECLARATIONS = [ |
| CdkNestedTreeNode, |
| CdkTreeNodeDef, |
| CdkTreeNodePadding, |
| CdkTreeNodeToggle, |
| CdkTree, |
| CdkTreeNode, |
| CdkTreeNodeOutlet, |
| ]; |
| class CdkTreeModule { |
| } |
| CdkTreeModule.decorators = [ |
| { type: NgModule, args: [{ |
| exports: EXPORTED_DECLARATIONS, |
| declarations: EXPORTED_DECLARATIONS, |
| },] } |
| ]; |
| |
| /** |
| * @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 { BaseTreeControl, CDK_TREE_NODE_OUTLET_NODE, CdkNestedTreeNode, CdkTree, CdkTreeModule, CdkTreeNode, CdkTreeNodeDef, CdkTreeNodeOutlet, CdkTreeNodeOutletContext, CdkTreeNodePadding, CdkTreeNodeToggle, FlatTreeControl, NestedTreeControl, getTreeControlFunctionsMissingError, getTreeControlMissingError, getTreeMissingMatchingNodeDefError, getTreeMultipleDefaultNodeDefsError, getTreeNoValidDataSourceError }; |
| //# sourceMappingURL=tree.js.map |
