@intzi1992/mat-table-filter
Version:
Provides filtering support for @angular/material tables
106 lines • 15.6 kB
JavaScript
import { Injectable } from '@angular/core';
import isEqual from 'lodash-es/isEqual';
import cloneDeep from 'lodash-es/cloneDeep';
import isNil from 'lodash-es/isNil';
import every from 'lodash-es/every';
import isFunction from 'lodash-es/isFunction';
import isArray from 'lodash-es/isArray';
import isBoolean from 'lodash-es/isBoolean';
import isString from 'lodash-es/isString';
import isNumber from 'lodash-es/isNumber';
import isEmpty from 'lodash-es/isEmpty';
import * as i0 from "@angular/core";
import * as i1 from "./alpha-numeric-predicate.service";
import * as i2 from "./array-predicate.service";
export class MatTableFilterService {
constructor(_alphaNumericService, _arrayService) {
this._alphaNumericService = _alphaNumericService;
this._arrayService = _arrayService;
}
filterPredicate(itemPair, propertyOptions, commonOptions, propertyName) {
// tslint:disable-next-line:forin
const exampleKeys = Object.keys(itemPair.example);
for (const key of exampleKeys) {
const exampleValue = cloneDeep(itemPair.example[key]);
if (isNil(exampleValue) || every(exampleValue, isEmpty) && typeof exampleValue !== 'boolean') {
// if example entity's property is undefined/null/empty then it means the caller wants all the data
continue;
}
if (itemPair.item?.hasOwnProperty(key)) {
// if example entity has additional columns then search fails
const itemValue = cloneDeep(itemPair.item[key]);
const nextPropertyName = this.getNextPropertyName(key, propertyName);
const options = this.finalizeOptionsForProperty(commonOptions, propertyOptions, nextPropertyName);
if (isFunction(options)) { // if user defined predicate is present for property
const customPredicate = options;
if (!customPredicate(itemValue)) {
return false;
}
}
else {
const columnOptions = options;
if (this.isAlphaNumeric(itemValue)) {
const valuePair = { item: itemValue.toString(), example: exampleValue };
if (!this._alphaNumericService.executeCondition(valuePair, columnOptions)) {
return false;
}
}
else if (isArray(itemValue)) {
const valuePair = { item: itemValue, example: exampleValue };
if (!this._arrayService.executeCondition(valuePair, columnOptions)) {
return false;
}
}
else if (isBoolean(itemValue)) {
if (itemValue !== exampleValue) {
return false;
}
}
else {
const valuePair = { item: itemValue, example: exampleValue };
if (!this.filterPredicate(valuePair, propertyOptions, options, nextPropertyName)) {
// if one of the inner properties returns true, this shouldnt affect the whole item's filtering
// however if it returns false then the item must not be in the list
return false;
}
}
}
}
else {
return false;
}
}
return true;
}
finalizeOptionsForProperty(commonOptions, propertyOptions, propertyName) {
if (propertyOptions && propertyOptions.hasOwnProperty(propertyName)) {
return propertyOptions[propertyName];
}
else {
return commonOptions;
}
}
getNextPropertyName(key, propertyName) {
return propertyName ? (propertyName + '.' + key) : key;
}
isChanged(oldEntity, newEntity) {
return !isEqual(this.toPlainJson(oldEntity), this.toPlainJson(newEntity));
}
toPlainJson(object) {
if (!object)
return null;
return JSON.parse(JSON.stringify(object));
}
isAlphaNumeric(value) {
return isString(value) || isNumber(value);
}
static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: MatTableFilterService, deps: [{ token: i1.AlphaNumericPredicateService }, { token: i2.ArrayPredicateService }], target: i0.ɵɵFactoryTarget.Injectable }); }
static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: MatTableFilterService, providedIn: 'root' }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: MatTableFilterService, decorators: [{
type: Injectable,
args: [{
providedIn: 'root'
}]
}], ctorParameters: () => [{ type: i1.AlphaNumericPredicateService }, { type: i2.ArrayPredicateService }] });
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{ PropertyOptions, PredicateFunc } from '../property-options';\nimport { ItemPair } from './../item-pair';\nimport { ArrayPredicateService } from './array-predicate.service';\nimport { AlphaNumericPredicateService } from './alpha-numeric-predicate.service';\nimport { Injectable } from '@angular/core';\nimport isEqual from 'lodash-es/isEqual';\nimport cloneDeep from 'lodash-es/cloneDeep';\nimport isNil from 'lodash-es/isNil';\nimport every from 'lodash-es/every';\nimport isFunction from 'lodash-es/isFunction';\nimport isArray from 'lodash-es/isArray';\nimport isBoolean from 'lodash-es/isBoolean';\nimport isString from 'lodash-es/isString';\nimport isNumber from 'lodash-es/isNumber';\nimport isEmpty from 'lodash-es/isEmpty';\nimport { Options } from '../options';\n\n@Injectable({\n  providedIn: 'root'\n})\nexport class MatTableFilterService {\n  constructor(private _alphaNumericService: AlphaNumericPredicateService, private _arrayService: ArrayPredicateService) {}\n\n  public filterPredicate(itemPair: ItemPair<any>, propertyOptions: PropertyOptions,\n                         commonOptions: Options | PredicateFunc, propertyName?: string): boolean {\n    // tslint:disable-next-line:forin\n    const exampleKeys = Object.keys(itemPair.example);\n    for (const key of exampleKeys) {\n      const exampleValue = cloneDeep(itemPair.example[key]);\n      if (isNil(exampleValue) || every(exampleValue, isEmpty) && typeof exampleValue !== 'boolean') {\n        // if example entity's property is undefined/null/empty then it means the caller wants all the data\n        continue;\n      }\n      if (itemPair.item?.hasOwnProperty(key)) {\n        // if example entity has additional columns then search fails\n        const itemValue = cloneDeep(itemPair.item[key]);\n        const nextPropertyName = this.getNextPropertyName(key, propertyName);\n        const options = this.finalizeOptionsForProperty(commonOptions, propertyOptions, nextPropertyName);\n        if (isFunction(options)) { // if user defined predicate is present for property\n          const customPredicate = options as PredicateFunc;\n          if (!customPredicate(itemValue)) {\n            return false;\n          }\n        } else {\n          const columnOptions = options as Options;\n          if (this.isAlphaNumeric(itemValue)) {\n            const valuePair: ItemPair<string> = {item: itemValue.toString(), example: exampleValue};\n            if (!this._alphaNumericService.executeCondition(valuePair, columnOptions)) {\n              return false;\n            }\n          } else if (isArray(itemValue)) {\n            const valuePair: ItemPair<any[]> = {item: itemValue, example: exampleValue};\n            if (!this._arrayService.executeCondition(valuePair, columnOptions)) {\n              return false;\n            }\n          } else if (isBoolean(itemValue)) {\n            if (itemValue !== exampleValue) {\n              return false;\n            }\n          } else {\n            const valuePair: ItemPair<any> = {item: itemValue, example: exampleValue};\n            if (!this.filterPredicate(valuePair, propertyOptions, options, nextPropertyName)) {\n              // if one of the inner properties returns true, this shouldnt affect the whole item's filtering\n              // however if it returns false then the item must not be in the list\n              return false;\n            }\n          }\n        }\n      } else {\n        return false;\n      }\n    }\n    return true;\n  }\n\n  private finalizeOptionsForProperty(commonOptions: Options | PredicateFunc, propertyOptions: PropertyOptions, propertyName: string):\n   Options | PredicateFunc {\n    if (propertyOptions && propertyOptions.hasOwnProperty(propertyName)) {\n      return propertyOptions[propertyName];\n    } else {\n      return commonOptions;\n    }\n  }\n\n  private getNextPropertyName(key: string, propertyName?: string): string {\n    return propertyName ? (propertyName + '.' + key) : key;\n  }\n\n  public isChanged(oldEntity: any, newEntity: any): boolean {\n    return !isEqual(this.toPlainJson(oldEntity), this.toPlainJson(newEntity));\n  }\n\n  public toPlainJson(object?: any): JSON | null {\n    if (!object)\n      return null;\n    return JSON.parse(JSON.stringify(object));\n  }\n\n  private isAlphaNumeric(value: any): boolean {\n    return isString(value) || isNumber(value);\n  }\n}\n"]}