@kushki/ng-suka
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<p align="center"> <h1 align="center">Suka Components Angular</h1> <p align="center"> An Angular implementation of the Suka Design System </p> </p>
400 lines • 43.4 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
// tslint:disable: variable-name
import { DataSource } from '@angular/cdk/table';
import { BehaviorSubject, combineLatest, merge, of as observableOf, Subscription, Subject, } from 'rxjs';
// import { SukaSort, Sort } from '@angular/material/sort';
import { map } from 'rxjs/operators';
/**
* Corresponds to `Number.MAX_SAFE_INTEGER`. Moved out into a variable here due to
* flaky browser support and the value not being defined in Closure's typings.
* @type {?}
*/
const MAX_SAFE_INTEGER = 9007199254740991;
/**
* Data source that accepts a client-side data array and includes native support of filtering,
* sorting (using SukaSort), and pagination (using SukaPaginator).
*
* Allows for sort customization by overriding sortingDataAccessor, which defines how data
* properties are accessed. Also allows for filter customization by overriding filterTermAccessor,
* which defines how row data is converted to a string for filter matching.
*
* **Note:** This class is meant to be a simple data source to help you get started. As such
* it isn't equipped to handle some more advanced cases like robust i18n support or server-side
* interactions. If your app needs to support more advanced use cases, consider implementing your
* own `DataSource`.
* @template T
*/
export class SukaTableDataSource extends DataSource {
/**
* @param {?=} initialData
*/
constructor(initialData = []) {
super();
/**
* Stream emitting render data to the table (depends on ordered data changes).
*/
this._renderData = new BehaviorSubject([]);
/**
* Stream that emits when a new filter string is set on the data source.
*/
this._filter = new BehaviorSubject('');
/**
* Used to react to internal changes of the paginator that are made by the data source itself.
*/
this._internalPageChanges = new Subject();
/**
* Subscription to the changes that should trigger an update to the table's rendered rows, such
* as filtering, sorting, pagination, or base data changes.
*/
this._renderChangesSubscription = Subscription.EMPTY;
/**
* Data accessor function that is used for accessing data properties for sorting through
* the default sortData function.
* This default function assumes that the sort header IDs (which defaults to the column name)
* matches the data's properties (e.g. column Xyz represents data['Xyz']).
* May be set to a custom function for different behavior.
* @param data Data object that is being accessed.
* @param sortHeaderId The name of the column that represents the data.
*/
// sortingDataAccessor: ((data: T, sortHeaderId: string) => string | number) =
// (data: T, sortHeaderId: string): string | number => {
// const value = (data as { [key: string]: any })[sortHeaderId];
// if (_isNumberValue(value)) {
// const numberValue = Number(value);
// // Numbers beyond `MAX_SAFE_INTEGER` can't be compared reliably so we
// // leave them as strings. For more info: https://goo.gl/y5vbSg
// return numberValue < MAX_SAFE_INTEGER ? numberValue : value;
// }
// return value;
// }
/**
* Gets a sorted copy of the data array based on the state of the SukaSort. Called
* after changes are made to the filtered data or when sort changes are emitted from SukaSort.
* By default, the function retrieves the active sort and its direction and compares data
* by retrieving data using the sortingDataAccessor. May be overridden for a custom implementation
* of data ordering.
* @param data The array of data that should be sorted.
* @param sort The connected SukaSort that holds the current sort state.
*/
// sortData: ((data: T[], sort: SukaSort) => T[]) = (data: T[], sort: SukaSort): T[] => {
// const active = sort.active;
// const direction = sort.direction;
// if (!active || direction == '') { return data; }
// return data.sort((a, b) => {
// let valueA = this.sortingDataAccessor(a, active);
// let valueB = this.sortingDataAccessor(b, active);
// // If both valueA and valueB exist (truthy), then compare the two. Otherwise, check if
// // one value exists while the other doesn't. In this case, existing value should come last.
// // This avoids inconsistent results when comparing values to undefined/null.
// // If neither value exists, return 0 (equal).
// let comparatorResult = 0;
// if (valueA != null && valueB != null) {
// // Check if one value is greater than the other; if equal, comparatorResult should remain 0.
// if (valueA > valueB) {
// comparatorResult = 1;
// } else if (valueA < valueB) {
// comparatorResult = -1;
// }
// } else if (valueA != null) {
// comparatorResult = 1;
// } else if (valueB != null) {
// comparatorResult = -1;
// }
// return comparatorResult * (direction == 'asc' ? 1 : -1);
// });
// }
/**
* Checks if a data object matches the data source's filter string. By default, each data object
* is converted to a string of its properties and returns true if the filter has
* at least one occurrence in that string. By default, the filter string has its whitespace
* trimmed and the match is case-insensitive. May be overridden for a custom implementation of
* filter matching.
* @param data Data object used to check against the filter.
* @param filter Filter string that has been set on the data source.
* @return Whether the filter matches against the data
*/
this.filterPredicate = (/**
* @param {?} data
* @param {?} filter
* @return {?}
*/
(data, filter) => {
// Transform the data into a lowercase string of all property values.
/** @type {?} */
const dataStr = Object.keys(data).reduce((/**
* @param {?} currentTerm
* @param {?} key
* @return {?}
*/
(currentTerm, key) => {
// Use an obscure Unicode character to delimit the words in the concatenated string.
// This avoids matches where the values of two columns combined will match the user's query
// (e.g. `Flute` and `Stop` will match `Test`). The character is intended to be something
// that has a very low chance of being typed in by somebody in a text field. This one in
// particular is "White up-pointing triangle with dot" from
// https://en.wikipedia.org/wiki/List_of_Unicode_characters
return currentTerm + ((/** @type {?} */ (data)))[key] + '◬';
}), '').toLowerCase();
// Transform the filter by converting it to lowercase and removing whitespace.
/** @type {?} */
const transformedFilter = filter.trim().toLowerCase();
return dataStr.indexOf(transformedFilter) !== -1;
});
this._data = new BehaviorSubject(initialData);
this._updateChangeSubscription();
}
/**
* Array of data that should be rendered by the table, where each object represents one row.
* @return {?}
*/
get data() { return this._data.value; }
/**
* @param {?} data
* @return {?}
*/
set data(data) { this._data.next(data); }
/**
* Filter term that should be used to filter out objects from the data array. To override how
* data objects match to this filter string, provide a custom function for filterPredicate.
* @return {?}
*/
get filter() { return this._filter.value; }
/**
* @param {?} filter
* @return {?}
*/
set filter(filter) { this._filter.next(filter); }
/**
* Instance of the SukaSort directive used by the table to control its sorting. Sort changes
* emitted by the SukaSort will trigger an update to the table's rendered data.
*/
// get sort(): SukaSort | null { return this._sort; }
// set sort(sort: SukaSort | null) {
// this._sort = sort;
// this._updateChangeSubscription();
// }
// private _sort: SukaSort | null;
/**
* Instance of the Pagination component used by the table to control what page of the data is
* displayed. Page changes emitted by the Pagination will trigger an update to the
* table's rendered data.
*
* Note that the data source uses the pagination's properties to calculate which page of data
* should be displayed. If the pagination receives its properties as template inputs,
* e.g. `[pageLength]=100` or `[pageIndex]=1`, then be sure that the pagination's view has been
* initialized before assigning it to this data source.
* @return {?}
*/
get paginator() { return this._paginator; }
/**
* @param {?} paginator
* @return {?}
*/
set paginator(paginator) {
this._paginator = paginator;
this._updateChangeSubscription();
}
/**
* Subscribe to changes that should trigger an update to the table's rendered rows. When the
* changes occur, process the current state of the filter, sort, and pagination along with
* the provided base data and send it to the table for rendering.
* @return {?}
*/
_updateChangeSubscription() {
// Sorting and/or pagination should be watched if SukaSort and/or SukaPaginator are provided.
// The events should emit whenever the component emits a change or initializes, or if no
// component is provided, a stream with just a null event should be provided.
// The `sortChange` and `pageChange` acts as a signal to the combineLatests below so that the
// pipeline can progress to the next step. Note that the value from these streams are not used,
// they purely act as a signal to progress in the pipeline.
// const sortChange: Observable<Sort | null | void> = this._sort ?
// merge(this._sort.sortChange, this._sort.initialized) as Observable<Sort | void> :
// observableOf(null);
/** @type {?} */
const pageChange = this._paginator ?
(/** @type {?} */ (merge(this._paginator.page, this._internalPageChanges, this._paginator.initialized))) :
observableOf(null);
/** @type {?} */
const dataStream = this._data;
// Watch for base data or filter changes to provide a filtered set of data.
/** @type {?} */
const filteredData = combineLatest([dataStream, this._filter])
.pipe(map((/**
* @param {?} __0
* @return {?}
*/
([data]) => this._filterData(data))));
// Watch for filtered data or sort changes to provide an ordered set of data.
// const orderedData = combineLatest([filteredData, sortChange])
// .pipe(map(([data]) => this._orderData(data)));
// Watch for ordered data or page changes to provide a paged set of data.
// const paginatedData = combineLatest([orderedData, pageChange])
// .pipe(map(([data]) => this._pageData(data)));
/** @type {?} */
const paginatedData = combineLatest([filteredData, pageChange])
.pipe(map((/**
* @param {?} __0
* @return {?}
*/
([data]) => this._pageData(data))));
// Watched for paged data changes and send the result to the table to render.
this._renderChangesSubscription.unsubscribe();
this._renderChangesSubscription = paginatedData.subscribe((/**
* @param {?} data
* @return {?}
*/
data => this._renderData.next(data)));
}
/**
* Returns a filtered data array where each filter object contains the filter string within
* the result of the filterTermAccessor function. If no filter is set, returns the data array
* as provided.
* @param {?} data
* @return {?}
*/
_filterData(data) {
// If there is a filter string, filter out data that does not contain it.
// Each data object is converted to a string using the function defined by filterTermAccessor.
// May be overridden for customization.
this.filteredData =
!this.filter ? data : data.filter((/**
* @param {?} obj
* @return {?}
*/
obj => this.filterPredicate(obj, this.filter)));
if (this.paginator) {
this._updatePaginator(this.filteredData.length);
}
return this.filteredData;
}
/**
* Returns a sorted copy of the data if SukaSort has a sort applied, otherwise just returns the
* data array as provided. Uses the default data accessor for data lookup, unless a
* sortDataAccessor function is defined.
*/
// _orderData(data: T[]): T[] {
// // If there is no active sort or direction, return the data without trying to sort.
// if (!this.sort) { return data; }
// return this.sortData(data.slice(), this.sort);
// }
/**
* Returns a paged slice of the provided data array according to the provided SukaPaginator's page
* index and length. If there is no paginator provided, returns the data array as provided.
* @param {?} data
* @return {?}
*/
_pageData(data) {
if (!this.paginator) {
return data;
}
/** @type {?} */
const startIndex = this.paginator.pageIndex * this.paginator.pageSize;
return data.slice(startIndex, startIndex + this.paginator.pageSize);
}
/**
* Updates the paginator to reflect the length of the filtered data, and makes sure that the page
* index does not exceed the paginator's last page. Values are changed in a resolved promise to
* guard against making property changes within a round of change detection.
* @param {?} filteredDataLength
* @return {?}
*/
_updatePaginator(filteredDataLength) {
Promise.resolve().then((/**
* @return {?}
*/
() => {
/** @type {?} */
const paginator = this.paginator;
if (!paginator) {
return;
}
paginator.length = filteredDataLength;
// If the page index is set beyond the page, reduce it to the last page.
if (paginator.pageIndex > 0) {
/** @type {?} */
const lastPageIndex = Math.ceil(paginator.length / paginator.pageSize) - 1 || 0;
/** @type {?} */
const newPageIndex = Math.min(paginator.pageIndex, lastPageIndex);
if (newPageIndex !== paginator.pageIndex) {
paginator.pageIndex = newPageIndex;
// Since the paginator only emits after user-generated changes,
// we need our own stream so we know to should re-render the data.
this._internalPageChanges.next();
}
}
}));
}
/**
* Used by the SukaTable. Called when it connects to the data source.
* \@docs-private
* @return {?}
*/
connect() { return this._renderData; }
/**
* Used by the SukaTable. Called when it is destroyed. No-op.
* \@docs-private
* @return {?}
*/
disconnect() { }
}
if (false) {
/**
* Stream that emits when a new data array is set on the data source.
* @type {?}
* @private
*/
SukaTableDataSource.prototype._data;
/**
* Stream emitting render data to the table (depends on ordered data changes).
* @type {?}
* @private
*/
SukaTableDataSource.prototype._renderData;
/**
* Stream that emits when a new filter string is set on the data source.
* @type {?}
* @private
*/
SukaTableDataSource.prototype._filter;
/**
* Used to react to internal changes of the paginator that are made by the data source itself.
* @type {?}
* @private
*/
SukaTableDataSource.prototype._internalPageChanges;
/**
* Subscription to the changes that should trigger an update to the table's rendered rows, such
* as filtering, sorting, pagination, or base data changes.
* @type {?}
*/
SukaTableDataSource.prototype._renderChangesSubscription;
/**
* The filtered set of data that has been matched by the filter string, or all the data if there
* is no filter. Useful for knowing the set of data the table represents.
* For example, a 'selectAll()' function would likely want to select the set of filtered data
* shown to the user rather than all the data.
* @type {?}
*/
SukaTableDataSource.prototype.filteredData;
/**
* @type {?}
* @private
*/
SukaTableDataSource.prototype._paginator;
/**
* Checks if a data object matches the data source's filter string. By default, each data object
* is converted to a string of its properties and returns true if the filter has
* at least one occurrence in that string. By default, the filter string has its whitespace
* trimmed and the match is case-insensitive. May be overridden for a custom implementation of
* filter matching.
* \@param data Data object used to check against the filter.
* \@param filter Filter string that has been set on the data source.
* \@return Whether the filter matches against the data
* @type {?}
*/
SukaTableDataSource.prototype.filterPredicate;
}
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Moved out into a variable here due to\n * flaky browser support and the value not being defined in Closure's typings.\n */\nconst MAX_SAFE_INTEGER = 9007199254740991;\n\n/**\n * Data source that accepts a client-side data array and includes native support of filtering,\n * sorting (using SukaSort), and pagination (using SukaPaginator).\n *\n * Allows for sort customization by overriding sortingDataAccessor, which defines how data\n * properties are accessed. Also allows for filter customization by overriding filterTermAccessor,\n * which defines how row data is converted to a string for filter matching.\n *\n * **Note:** This class is meant to be a simple data source to help you get started. As such\n * it isn't equipped to handle some more advanced cases like robust i18n support or server-side\n * interactions. If your app needs to support more advanced use cases, consider implementing your\n * own `DataSource`.\n */\nexport class SukaTableDataSource<T> extends DataSource<T> {\n  /** Stream that emits when a new data array is set on the data source. */\n  private readonly _data: BehaviorSubject<T[]>;\n\n  /** Stream emitting render data to the table (depends on ordered data changes). */\n  private readonly _renderData = new BehaviorSubject<T[]>([]);\n\n  /** Stream that emits when a new filter string is set on the data source. */\n  private readonly _filter = new BehaviorSubject<string>('');\n\n  /** Used to react to internal changes of the paginator that are made by the data source itself. */\n  private readonly _internalPageChanges = new Subject<void>();\n\n  /**\n   * Subscription to the changes that should trigger an update to the table's rendered rows, such\n   * as filtering, sorting, pagination, or base data changes.\n   */\n  _renderChangesSubscription = Subscription.EMPTY;\n\n  /**\n   * The filtered set of data that has been matched by the filter string, or all the data if there\n   * is no filter. Useful for knowing the set of data the table represents.\n   * For example, a 'selectAll()' function would likely want to select the set of filtered data\n   * shown to the user rather than all the data.\n   */\n  filteredData: T[];\n\n  /** Array of data that should be rendered by the table, where each object represents one row. */\n  get data() { return this._data.value; }\n  set data(data: T[]) { this._data.next(data); }\n\n  /**\n   * Filter term that should be used to filter out objects from the data array. To override how\n   * data objects match to this filter string, provide a custom function for filterPredicate.\n   */\n  get filter(): string { return this._filter.value; }\n  set filter(filter: string) { this._filter.next(filter); }\n\n  /**\n   * Instance of the SukaSort directive used by the table to control its sorting. Sort changes\n   * emitted by the SukaSort will trigger an update to the table's rendered data.\n   */\n  // get sort(): SukaSort | null { return this._sort; }\n  // set sort(sort: SukaSort | null) {\n  //   this._sort = sort;\n  //   this._updateChangeSubscription();\n  // }\n  // private _sort: SukaSort | null;\n\n  /**\n   * Instance of the Pagination component used by the table to control what page of the data is\n   * displayed. Page changes emitted by the Pagination will trigger an update to the\n   * table's rendered data.\n   *\n   * Note that the data source uses the pagination's properties to calculate which page of data\n   * should be displayed. If the pagination receives its properties as template inputs,\n   * e.g. `[pageLength]=100` or `[pageIndex]=1`, then be sure that the pagination's view has been\n   * initialized before assigning it to this data source.\n   */\n  get paginator(): Pagination | null { return this._paginator; }\n  set paginator(paginator: Pagination | null) {\n    this._paginator = paginator;\n    this._updateChangeSubscription();\n  }\n  private _paginator: Pagination | null;\n\n  /**\n   * Data accessor function that is used for accessing data properties for sorting through\n   * the default sortData function.\n   * This default function assumes that the sort header IDs (which defaults to the column name)\n   * matches the data's properties (e.g. column Xyz represents data['Xyz']).\n   * May be set to a custom function for different behavior.\n   * @param data Data object that is being accessed.\n   * @param sortHeaderId The name of the column that represents the data.\n   */\n  // sortingDataAccessor: ((data: T, sortHeaderId: string) => string | number) =\n  //   (data: T, sortHeaderId: string): string | number => {\n  //     const value = (data as { [key: string]: any })[sortHeaderId];\n\n  //     if (_isNumberValue(value)) {\n  //       const numberValue = Number(value);\n\n  //       // Numbers beyond `MAX_SAFE_INTEGER` can't be compared reliably so we\n  //       // leave them as strings. For more info: https://goo.gl/y5vbSg\n  //       return numberValue < MAX_SAFE_INTEGER ? numberValue : value;\n  //     }\n\n  //     return value;\n  //   }\n\n  /**\n   * Gets a sorted copy of the data array based on the state of the SukaSort. Called\n   * after changes are made to the filtered data or when sort changes are emitted from SukaSort.\n   * By default, the function retrieves the active sort and its direction and compares data\n   * by retrieving data using the sortingDataAccessor. May be overridden for a custom implementation\n   * of data ordering.\n   * @param data The array of data that should be sorted.\n   * @param sort The connected SukaSort that holds the current sort state.\n   */\n  // sortData: ((data: T[], sort: SukaSort) => T[]) = (data: T[], sort: SukaSort): T[] => {\n  //   const active = sort.active;\n  //   const direction = sort.direction;\n  //   if (!active || direction == '') { return data; }\n\n  //   return data.sort((a, b) => {\n  //     let valueA = this.sortingDataAccessor(a, active);\n  //     let valueB = this.sortingDataAccessor(b, active);\n\n  //     // If both valueA and valueB exist (truthy), then compare the two. Otherwise, check if\n  //     // one value exists while the other doesn't. In this case, existing value should come last.\n  //     // This avoids inconsistent results when comparing values to undefined/null.\n  //     // If neither value exists, return 0 (equal).\n  //     let comparatorResult = 0;\n  //     if (valueA != null && valueB != null) {\n  //       // Check if one value is greater than the other; if equal, comparatorResult should remain 0.\n  //       if (valueA > valueB) {\n  //         comparatorResult = 1;\n  //       } else if (valueA < valueB) {\n  //         comparatorResult = -1;\n  //       }\n  //     } else if (valueA != null) {\n  //       comparatorResult = 1;\n  //     } else if (valueB != null) {\n  //       comparatorResult = -1;\n  //     }\n\n  //     return comparatorResult * (direction == 'asc' ? 1 : -1);\n  //   });\n  // }\n\n  /**\n   * Checks if a data object matches the data source's filter string. By default, each data object\n   * is converted to a string of its properties and returns true if the filter has\n   * at least one occurrence in that string. By default, the filter string has its whitespace\n   * trimmed and the match is case-insensitive. May be overridden for a custom implementation of\n   * filter matching.\n   * @param data Data object used to check against the filter.\n   * @param filter Filter string that has been set on the data source.\n   * @returns Whether the filter matches against the data\n   */\n  filterPredicate: ((data: T, filter: string) => boolean) = (data: T, filter: string): boolean => {\n    // Transform the data into a lowercase string of all property values.\n    const dataStr = Object.keys(data).reduce((currentTerm: string, key: string) => {\n      // Use an obscure Unicode character to delimit the words in the concatenated string.\n      // This avoids matches where the values of two columns combined will match the user's query\n      // (e.g. `Flute` and `Stop` will match `Test`). The character is intended to be something\n      // that has a very low chance of being typed in by somebody in a text field. This one in\n      // particular is \"White up-pointing triangle with dot\" from\n      // https://en.wikipedia.org/wiki/List_of_Unicode_characters\n      return currentTerm + (data as { [key: string]: any })[key] + '◬';\n    }, '').toLowerCase();\n\n    // Transform the filter by converting it to lowercase and removing whitespace.\n    const transformedFilter = filter.trim().toLowerCase();\n\n    return dataStr.indexOf(transformedFilter) !== -1;\n  }\n\n  constructor(initialData: T[] = []) {\n    super();\n    this._data = new BehaviorSubject<T[]>(initialData);\n    this._updateChangeSubscription();\n  }\n\n  /**\n   * Subscribe to changes that should trigger an update to the table's rendered rows. When the\n   * changes occur, process the current state of the filter, sort, and pagination along with\n   * the provided base data and send it to the table for rendering.\n   */\n  _updateChangeSubscription() {\n    // Sorting and/or pagination should be watched if SukaSort and/or SukaPaginator are provided.\n    // The events should emit whenever the component emits a change or initializes, or if no\n    // component is provided, a stream with just a null event should be provided.\n    // The `sortChange` and `pageChange` acts as a signal to the combineLatests below so that the\n    // pipeline can progress to the next step. Note that the value from these streams are not used,\n    // they purely act as a signal to progress in the pipeline.\n    // const sortChange: Observable<Sort | null | void> = this._sort ?\n    //   merge(this._sort.sortChange, this._sort.initialized) as Observable<Sort | void> :\n    //   observableOf(null);\n    const pageChange: Observable<PageEvent | null | void> = this._paginator ?\n      merge(\n        this._paginator.page,\n        this._internalPageChanges,\n        this._paginator.initialized\n      ) as Observable<PageEvent | void> :\n      observableOf(null);\n    const dataStream = this._data;\n    // Watch for base data or filter changes to provide a filtered set of data.\n    const filteredData = combineLatest([dataStream, this._filter])\n      .pipe(map(([data]) => this._filterData(data)));\n\n    // Watch for filtered data or sort changes to provide an ordered set of data.\n    // const orderedData = combineLatest([filteredData, sortChange])\n    //   .pipe(map(([data]) => this._orderData(data)));\n\n    // Watch for ordered data or page changes to provide a paged set of data.\n    // const paginatedData = combineLatest([orderedData, pageChange])\n    //   .pipe(map(([data]) => this._pageData(data)));\n    const paginatedData = combineLatest([filteredData, pageChange])\n      .pipe(map(([data]) => this._pageData(data)));\n\n    // Watched for paged data changes and send the result to the table to render.\n    this._renderChangesSubscription.unsubscribe();\n    this._renderChangesSubscription = paginatedData.subscribe(data => this._renderData.next(data));\n  }\n\n  /**\n   * Returns a filtered data array where each filter object contains the filter string within\n   * the result of the filterTermAccessor function. If no filter is set, returns the data array\n   * as provided.\n   */\n  _filterData(data: T[]) {\n    // If there is a filter string, filter out data that does not contain it.\n    // Each data object is converted to a string using the function defined by filterTermAccessor.\n    // May be overridden for customization.\n    this.filteredData =\n      !this.filter ? data : data.filter(obj => this.filterPredicate(obj, this.filter));\n\n    if (this.paginator) { this._updatePaginator(this.filteredData.length); }\n\n    return this.filteredData;\n  }\n\n  /**\n   * Returns a sorted copy of the data if SukaSort has a sort applied, otherwise just returns the\n   * data array as provided. Uses the default data accessor for data lookup, unless a\n   * sortDataAccessor function is defined.\n   */\n  // _orderData(data: T[]): T[] {\n  //   // If there is no active sort or direction, return the data without trying to sort.\n  //   if (!this.sort) { return data; }\n\n  //   return this.sortData(data.slice(), this.sort);\n  // }\n\n  /**\n   * Returns a paged slice of the provided data array according to the provided SukaPaginator's page\n   * index and length. If there is no paginator provided, returns the data array as provided.\n   */\n  _pageData(data: T[]): T[] {\n    if (!this.paginator) { return data; }\n\n    const startIndex = this.paginator.pageIndex * this.paginator.pageSize;\n    return data.slice(startIndex, startIndex + this.paginator.pageSize);\n  }\n\n  /**\n   * Updates the paginator to reflect the length of the filtered data, and makes sure that the page\n   * index does not exceed the paginator's last page. Values are changed in a resolved promise to\n   * guard against making property changes within a round of change detection.\n   */\n  _updatePaginator(filteredDataLength: number) {\n    Promise.resolve().then(() => {\n      const paginator = this.paginator;\n\n      if (!paginator) { return; }\n\n      paginator.length = filteredDataLength;\n\n      // If the page index is set beyond the page, reduce it to the last page.\n      if (paginator.pageIndex > 0) {\n        const lastPageIndex = Math.ceil(paginator.length / paginator.pageSize) - 1 || 0;\n        const newPageIndex = Math.min(paginator.pageIndex, lastPageIndex);\n\n        if (newPageIndex !== paginator.pageIndex) {\n          paginator.pageIndex = newPageIndex;\n\n          // Since the paginator only emits after user-generated changes,\n          // we need our own stream so we know to should re-render the data.\n          this._internalPageChanges.next();\n        }\n      }\n    });\n  }\n\n  /**\n   * Used by the SukaTable. Called when it connects to the data source.\n   * @docs-private\n   */\n  connect() { return this._renderData; }\n\n  /**\n   * Used by the SukaTable. Called when it is destroyed. No-op.\n   * @docs-private\n   */\n  disconnect() { }\n}\n"]}