ornamentum
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Angular Toolkit
223 lines • 22.1 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Injectable } from '@angular/core';
import { ReplaySubject, of } from 'rxjs';
import { switchMap } from 'rxjs/operators';
import { orderBy, get } from '../../utility/services/object-utility.class';
/**
* Data table resource service; Manage data table client side data querying.
* @template T
*/
export class DataTableResourceService {
/**
* Set data source stream to query.
* @param {?} dataSource Data source stream.
* @return {?}
*/
setDataSource(dataSource) {
this.dispose();
if (this.itemDataStream && !this.itemDataStream.closed) {
this.itemDataStream.complete();
}
this.itemDataStream = new ReplaySubject(1);
this.dataSourceSubscription = dataSource.subscribe((/**
* @param {?} items
* @return {?}
*/
(items) => {
this.itemDataStream.next(items);
}));
}
/**
* Query items by data table request params.
* @param {?} params Data table parameters object.
* @return {?} Query result stream.
*/
query(params) {
return this.itemDataStream.pipe(switchMap((/**
* @param {?} items
* @return {?}
*/
(items) => {
/** @type {?} */
let itemCount = items.length;
/** @type {?} */
let result = items.slice();
if (params.fields.length) {
/** @type {?} */
const filterFields = params.fields.filter((/**
* @param {?} field
* @return {?}
*/
field => field.filterable));
if (filterFields.length) {
result = items.filter((/**
* @param {?} item
* @return {?}
*/
item => {
return filterFields.every((/**
* @param {?} filterColumn
* @return {?}
*/
(filterColumn) => {
if (filterColumn.filterExpression) {
return filterColumn.filterExpression(item, filterColumn.field, filterColumn.filterValue);
}
if (filterColumn.filterValue === undefined || filterColumn.filterValue === '') {
return true;
}
/** @type {?} */
const fieldValue = get(item, filterColumn.field);
if (fieldValue === undefined) {
return true;
}
if (Array.isArray(filterColumn.filterValue)) {
return filterColumn.filterValue.length === 0 || filterColumn.filterValue.includes(fieldValue);
}
/** @type {?} */
const value = String(fieldValue).toLowerCase();
/** @type {?} */
const filterValue = String(filterColumn.filterValue).toLowerCase();
return value.includes(filterValue);
}));
}));
itemCount = result.length;
}
/** @type {?} */
const sortColumns = params.fields.filter((/**
* @param {?} column
* @return {?}
*/
(column) => {
return column.sortable && column.sortOrder !== '';
}));
if (sortColumns.length) {
/** @type {?} */
let orderedSortColumns = sortColumns;
if (sortColumns.length > 1) {
orderedSortColumns = sortColumns.concat().sort((/**
* @param {?} a
* @param {?} b
* @return {?}
*/
(a, b) => {
return a.sortPriority - b.sortPriority;
}));
}
/** @type {?} */
const orderParams = orderedSortColumns.reduce((/**
* @param {?} accumulator
* @param {?} column
* @return {?}
*/
(accumulator, column) => {
if (accumulator) {
accumulator.fields.push(column.field);
accumulator.orders.push(column.sortOrder);
}
return accumulator;
}), {
fields: [],
orders: []
});
result = orderBy(result, orderParams.fields, orderParams.orders);
}
}
if (params.offset !== undefined) {
/** @type {?} */
const offset = params.offset + 1 > result.length ? 0 : params.offset;
if (params.limit === undefined) {
result = result.slice(offset, result.length);
}
else {
result = result.slice(offset, offset + params.limit);
}
}
return of({
items: result,
count: itemCount
});
})));
}
/**
* Extract data table filter options.
* @param {?} filterColumn Data table column component.
* @return {?} Filter options collection stream.
*/
extractFilterOptions(filterColumn) {
return this.itemDataStream.pipe(switchMap((/**
* @param {?} items
* @return {?}
*/
(items) => {
/** @type {?} */
const filteredItems = items
.reduce((/**
* @param {?} acc
* @param {?} item
* @param {?} index
* @return {?}
*/
(acc, item, index) => {
if (filterColumn.filterFieldMapper) {
return acc.concat(filterColumn.filterFieldMapper(item, index));
}
/** @type {?} */
const filterField = filterColumn.filterField || filterColumn.field;
/** @type {?} */
const filterValue = get(item, filterField);
acc.push({
key: filterValue,
value: filterValue
});
return acc;
}), [])
.filter((/**
* @param {?} value
* @param {?} index
* @param {?} self
* @return {?}
*/
(value, index, self) => {
return self.findIndex((/**
* @param {?} item
* @return {?}
*/
item => item.key === value.key)) === index;
}));
return of(filteredItems);
})));
}
/**
* Dispose client data source streams.
* @return {?}
*/
dispose() {
if (this.dataSourceSubscription) {
this.dataSourceSubscription.unsubscribe();
this.dataSourceSubscription = null;
}
if (this.itemDataStream && !this.itemDataStream.closed) {
this.itemDataStream.complete();
}
}
}
DataTableResourceService.decorators = [
{ type: Injectable }
];
if (false) {
/**
* @type {?}
* @private
*/
DataTableResourceService.prototype.itemDataStream;
/**
* @type {?}
* @private
*/
DataTableResourceService.prototype.dataSourceSubscription;
}
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{ Injectable } from '@angular/core';\n\nimport { Observable, ReplaySubject, Subscription, of } from 'rxjs';\nimport { switchMap } from 'rxjs/operators';\n\nimport { orderBy, get } from '../../utility/services/object-utility.class';\n\nimport { DataTableRequestParams } from '../models/data-table-request-params.model';\nimport { DataTableQueryResult } from '../models/data-table-query-result.model';\nimport { DataTableFilterOption } from '../models/data-table-filter-option.model';\nimport { DataTableQueryField } from '../models/data-table-query-field.model';\n\nimport { DataTableColumnComponent } from '../components/data-table-column/data-table-column.component';\n\n/**\n * Data table resource service; Manage data table client side data querying.\n */\n@Injectable()\nexport class DataTableResourceService<T> {\n  private itemDataStream: ReplaySubject<T[]>;\n  private dataSourceSubscription: Subscription;\n\n  /**\n   * Set data source stream to query.\n   * @param dataSource Data source stream.\n   */\n  public setDataSource(dataSource: Observable<T[]>): void {\n    this.dispose();\n\n    if (this.itemDataStream && !this.itemDataStream.closed) {\n      this.itemDataStream.complete();\n    }\n\n    this.itemDataStream = new ReplaySubject<T[]>(1);\n    this.dataSourceSubscription = dataSource.subscribe((items: T[]) => {\n      this.itemDataStream.next(items);\n    });\n  }\n\n  /**\n   * Query items by data table request params.\n   * @param params Data table parameters object.\n   * @return Query result stream.\n   */\n  public query(params: DataTableRequestParams): Observable<DataTableQueryResult<T>> {\n    return this.itemDataStream.pipe(\n      switchMap((items: T[]) => {\n        let itemCount = items.length;\n        let result: T[] = items.slice();\n\n        if (params.fields.length) {\n          const filterFields = params.fields.filter(field => field.filterable);\n\n          if (filterFields.length) {\n            result = items.filter(item => {\n              return filterFields.every((filterColumn: DataTableQueryField) => {\n                if (filterColumn.filterExpression) {\n                  return filterColumn.filterExpression(item, filterColumn.field, filterColumn.filterValue);\n                }\n\n                if (filterColumn.filterValue === undefined || filterColumn.filterValue === '') {\n                  return true;\n                }\n\n                const fieldValue = get(item, filterColumn.field);\n                if (fieldValue === undefined) {\n                  return true;\n                }\n\n                if (Array.isArray(filterColumn.filterValue)) {\n                  return filterColumn.filterValue.length === 0 || filterColumn.filterValue.includes(fieldValue);\n                }\n\n                const value = String(fieldValue).toLowerCase();\n                const filterValue = String(filterColumn.filterValue).toLowerCase();\n                return value.includes(filterValue);\n              });\n            });\n            itemCount = result.length;\n          }\n\n          const sortColumns = params.fields.filter((column: DataTableQueryField) => {\n            return column.sortable && column.sortOrder !== '';\n          });\n\n          if (sortColumns.length) {\n            let orderedSortColumns = sortColumns;\n            if (sortColumns.length > 1) {\n              orderedSortColumns = sortColumns.concat().sort((a, b) => {\n                return a.sortPriority - b.sortPriority;\n              });\n            }\n\n            const orderParams = orderedSortColumns.reduce((accumulator: any, column: DataTableQueryField) => {\n                if (accumulator) {\n                  accumulator.fields.push(column.field);\n                  accumulator.orders.push(column.sortOrder);\n                }\n\n                return accumulator;\n              },\n              {\n                fields: [],\n                orders: []\n              }\n            );\n\n            result = orderBy(result, orderParams.fields, orderParams.orders);\n          }\n        }\n\n        if (params.offset !== undefined) {\n          const offset = params.offset + 1 > result.length ? 0 : params.offset;\n\n          if (params.limit === undefined) {\n            result = result.slice(offset, result.length);\n          } else {\n            result = result.slice(offset, offset + params.limit);\n          }\n        }\n\n        return of({\n          items: result,\n          count: itemCount\n        });\n      })\n    );\n  }\n\n  /**\n   * Extract data table filter options.\n   * @param filterColumn Data table column component.\n   * @return Filter options collection stream.\n   */\n  public extractFilterOptions(filterColumn: DataTableColumnComponent): Observable<DataTableFilterOption[]> {\n    return this.itemDataStream.pipe(\n      switchMap((items: T[]) => {\n        const filteredItems = items\n          .reduce((acc: DataTableFilterOption[], item: T, index: number): DataTableFilterOption[] => {\n            if (filterColumn.filterFieldMapper) {\n              return acc.concat(filterColumn.filterFieldMapper(item, index));\n            }\n\n            const filterField = filterColumn.filterField || filterColumn.field;\n            const filterValue = get(item, filterField);\n            acc.push({\n              key: filterValue,\n              value: filterValue\n            });\n\n            return acc;\n          }, [])\n          .filter((value: DataTableFilterOption, index, self) => {\n            return self.findIndex(item => item.key === value.key) === index;\n          });\n\n        return of(filteredItems);\n      })\n    );\n  }\n\n  /**\n   * Dispose client data source streams.\n   */\n  public dispose(): void {\n    if (this.dataSourceSubscription) {\n      this.dataSourceSubscription.unsubscribe();\n      this.dataSourceSubscription = null;\n    }\n\n    if (this.itemDataStream && !this.itemDataStream.closed) {\n      this.itemDataStream.complete();\n    }\n  }\n}\n"]}