454 lines
16 KiB
TypeScript
454 lines
16 KiB
TypeScript
import { ApplicationRef, Injectable, NgZone } from '@angular/core';
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import { AbstractControl, UntypedFormArray, UntypedFormGroup } from '@angular/forms';
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import { isNumeric } from '@app/utilities/enhancers/utils';
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import { Observable, Subject } from 'rxjs';
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import { VisibilityRule } from './models/visibility-rule';
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import { VisibilityRuleSource } from './models/visibility-rule-source';
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import { VisibilityRulesContext } from './models/visibility-rules-context';
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import { DescriptionTemplate, DescriptionTemplatePage, DescriptionTemplateSection } from '@app/core/model/description-template/description-template';
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import { Rule } from './models/rule';
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@Injectable()
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export class VisibilityRulesService {
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private readonly VISIBILITY_RULE_LOGIC: 'OR' | 'AND' = 'OR';
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private readonly DEFAULTVISIBILITY = false;
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private visibilityRuleContext: VisibilityRulesContext;
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private form: AbstractControl;
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public isVisibleMap: { [key: string]: boolean } = {};
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private elementVisibilityMapSubject = new Subject<{ [key: string]: boolean }>();
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private elementComputationalMap = new Map<String, Map<String, boolean>>(); /// keep saved the values of each form control validity value
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private _changeMade$ = new Subject<void>();
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// get isVisibleMap(): MapWithDefault {
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// // console.log('isVisibleMap');
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// return this.elementVisibilityMap;
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// }; /// keep saved the values of each form control validity value
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constructor(
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public applicationReference: ApplicationRef,
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public ngZone: NgZone
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) {
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}
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getElementVisibilityMapObservable(): Observable<{ [key: string]: boolean }> {
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// this.isVisibleMap
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// console.log('getElementVisibilityMapObservable: ');
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return this.elementVisibilityMapSubject.asObservable();
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}
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public checkElementVisibility(id: string): boolean {
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//console.log('checkElementVisibility: ' + id);
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return true;
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// if (this.visibilityRuleContext.rules.filter(item => item.targetControlId === id).length === 0) { return true; }
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// console.log(this.elementVisibilityMap.has(id) ? this.elementVisibilityMap.get(id) : false);
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// return this.elementVisibilityMap.has(id) ? this.elementVisibilityMap.get(id) : false;
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}
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public buildVisibilityRules(item: Array<Rule>, form: AbstractControl) {
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this.visibilityRuleContext = new VisibilityRulesContext();
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this.visibilityRuleContext.buildVisibilityRuleContext(item || []);
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this.form = form;
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this.resetVisibilityRules();
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}
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public updateValueAndVisibility(id: string, value: any) {
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//console.log('updateValueAndVisibility: ' + id + ' value: ' + value);
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const visibilityRules = this.visibilityRuleContext.rules.filter(item => item.sourceVisibilityRules.filter(source => source.sourceControlId === id).length > 0);
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if (visibilityRules.length > 0) {
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visibilityRules.forEach(item => this.evaluateVisibility(item, value, id));
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this.elementVisibilityMapSubject.next(this.isVisibleMap);
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}
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}
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private evaluateVisibility(visibilityRule: VisibilityRule, value: any, sourceId: string) {// source controlId is the same
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//console.log('evaluateVisibility: ' + visibilityRule + ' value: ' + value + ' sourceId: ' + sourceId);
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const targetId = visibilityRule.targetControlId;
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const visibilityMap = this.elementComputationalMap.get(targetId) ? this.elementComputationalMap.get(targetId) : new Map<String, boolean>();
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if (value instanceof Array) {
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const parsedSourceControlValues = visibilityRule.sourceVisibilityRules.map(e => this.parseValue(e.sourceControlValue));
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const parsedValues = value.map(e => this.parseValue(e));
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const isVisible = parsedValues.map(v => parsedSourceControlValues.includes(v)).reduce((acc, current) => acc || current, false);
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// if(isVisible){
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// this._emitChangesIfNeeded(visibilityRule.targetControlId, true);
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// this.elementVisibilityMap.set(visibilityRule.targetControlId, true);
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// return;
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// }
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visibilityMap.set(sourceId, isVisible);
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} else {
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const visibilityDependencySource = visibilityRule.sourceVisibilityRules.filter(x => x.sourceControlId === sourceId);
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const shouldBeVisible = visibilityDependencySource.reduce((isVisible, x) => {
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const shouldBeHidden = value !== null && (this.parseValue(value) !== this.parseValue(x.sourceControlValue));
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return this.VISIBILITY_RULE_LOGIC === 'OR' ? (isVisible || !shouldBeHidden) : (isVisible && !shouldBeHidden);
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// if(value !== null && )
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}, this.VISIBILITY_RULE_LOGIC === 'AND');
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visibilityMap.set(sourceId, shouldBeVisible);
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}
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this.elementComputationalMap.set(targetId, visibilityMap);// unnessecary
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const isVisible = this._computeVisibility(targetId);
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this._emitChangesIfNeeded(targetId, isVisible);
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const previousVisibility = this.isVisibleMap[targetId];
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this.isVisibleMap[targetId] = isVisible;
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if (!isVisible && previousVisibility !== isVisible) {
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this.resetControlWithId(this.form, targetId);
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}
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// for (let i = 0; i < visibilityRule.sourceVisibilityRules.length; i++) {
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// if (value != null && (this.parseValue(value) !== this.parseValue(visibilityRule.sourceVisibilityRules[i].sourceControlValue))) {
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// this._emitChangesIfNeeded(visibilityRule.targetControlId, false);
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// this.elementVisibilityMap.set(visibilityRule.targetControlId, false);
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// this.resetControlWithId(this.form, visibilityRule.targetControlId);
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// //this.updateValueAndVisibility(visibilityRule.targetControlId, null);
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// // this.clearValues(targetPathKey);
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// return;
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// }
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// }
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// this._emitChangesIfNeeded(visibilityRule.targetControlId, true);
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// this.elementVisibilityMap.set(visibilityRule.targetControlId, true);
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// this.updateValueAndVisibility(visibilityRule.targetControlId, null);
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}
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private _computeVisibility(targetId: string): boolean {
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//console.log('_computeVisibility: ' + targetId);
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const visibilityMap = this.elementComputationalMap.get(targetId);
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const values = visibilityMap.values();
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let currentVal = values.next();
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let visibilityValues: boolean[] = [];
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while (!currentVal.done) {
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visibilityValues.push(currentVal.value);
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currentVal = values.next();
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}
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if (visibilityValues.length) {
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return visibilityValues.reduce((r, c) => {
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if (this.VISIBILITY_RULE_LOGIC === 'OR') {
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return r || c;
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} else {
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return r && c;
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}
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}, visibilityValues[0]);
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}
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return this.DEFAULTVISIBILITY;
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}
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private resetVisibilityRules() {
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//console.log('resetVisibilityRules: ');
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this.isVisibleMap = {};
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this.elementComputationalMap.clear();
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this.elementComputationalMap = new Map<String, Map<String, boolean>>();
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this._populateComputationMap(); /// !IMPORTANT FOR THE AND LOGIC
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this._changeMade$.next();
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}
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private _populateComputationMap(): void {
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//console.log('_populateComputationMap: ');
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// this.visibilityRuleContext.rules.forEach(rule => {
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// const targetId = rule.targetControlId;
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// const visibilityMap = this.elementComputationalMap.get(targetId) ? this.elementComputationalMap.get(targetId) : new Map<String, boolean>();
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// rule.sourceVisibilityRules.forEach(vr => {
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// visibilityMap.set(vr.sourceControlId, this.DEFAULTVISIBILITY);
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// });
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// this.elementComputationalMap.set(targetId, visibilityMap);
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// });
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}
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parseValue(value: any) {
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if (typeof value === 'string') {
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if (isNumeric(value)) { return value; }
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else if (value === 'true') {
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return true;
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}
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else if (value === 'false') {
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return false;
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}
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else { return this.translate(value); }
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} else { return value; }
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}
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search(path, obj, target) {
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for (const k in obj) {
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if (obj.hasOwnProperty(k)) {
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if (obj[k] === target) {
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return path + '.' + k;
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} else if (typeof obj[k] === 'object') {
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const result = this.search(path + '.' + k, obj[k], target);
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if (result) {
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return result;
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}
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}
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}
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}
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return false;
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}
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scanIfChildsOfCompositeFieldHasVisibleItems(compositeFieldParent: UntypedFormGroup): boolean {
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// console.log('scanIfChildsOfCompositeFieldHasVisibleItems: ' + compositeFieldParent);
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//TODO: implement this
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return true;
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// let isVisible = false;
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// (<UntypedFormArray>(compositeFieldParent.get('fields'))).controls.forEach(element => {
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// if (this.checkElementVisibility(element.get('id').value)) {
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// isVisible = true;
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// }
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// });
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// return isVisible;
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}
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private translate(item: any) {
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try {
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return JSON.parse(item).value;
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} catch (error) {
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return item;
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}
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}
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private resetControlWithId(formControl: AbstractControl, id: string) {
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//'resetControlWithId: ' + id);
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//TODO: implement this
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// if (formControl instanceof UntypedFormGroup) {
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// if ((formControl as UntypedFormGroup).contains('id') && (formControl as UntypedFormGroup).contains('value') && (formControl as UntypedFormGroup).get('id').value === id) {
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// this.resetFieldFormGroup(formControl);
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// } if ((formControl as UntypedFormGroup).contains('id') && (formControl as UntypedFormGroup).contains('fields') && (formControl as UntypedFormGroup).get('id').value === id) {
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// this.resetCompositeFieldFormGroup(formControl);
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// } else {
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// Object.keys(formControl.controls).forEach(item => {
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// const control = formControl.get(item);
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// this.resetControlWithId(control, id);
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// });
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// }
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// } else if (formControl instanceof UntypedFormArray) {
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// formControl.controls.forEach(item => {
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// this.resetControlWithId(item, id);
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// });
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// }
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}
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private resetFieldFormGroup(formGroup: UntypedFormGroup) {
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//console.log('resetFieldFormGroup: ' + formGroup);
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//TODO: implement this
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// const renderStyle = formGroup.getRawValue().viewStyle.renderStyle;
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// if (renderStyle === DatasetProfileFieldViewStyle.Validation || renderStyle === DatasetProfileFieldViewStyle.DatasetIdentifier) {
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// formGroup.get('value').setValue({ identifier: '', type: '' });
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// } else {
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// formGroup.get('value').setValue(formGroup.get('defaultValue').value ? this.parseValue(formGroup.get('defaultValue').value.value) : undefined);
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// }
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}
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private resetCompositeFieldFormGroup(formGroup: UntypedFormGroup) {
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//console.log('resetCompositeFieldFormGroup: ' + formGroup);
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//TODO: implement this
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// (formGroup.get('fields') as UntypedFormArray).controls.forEach((element: UntypedFormGroup) => {
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// this.resetFieldFormGroup(element);
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// });
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// (formGroup.get('multiplicityItems') as UntypedFormArray).controls.splice(0);
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}
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private _emitChangesIfNeeded(id: string, valueToBeSet: boolean) {
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if (this.isVisibleMap[id]) {
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if (this.isVisibleMap[id] != valueToBeSet) {
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this._changeMade$.next();
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}
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} else {
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this._changeMade$.next();
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}
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}
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public get visibilityChange() {
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return this._changeMade$.asObservable();
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}
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public getVisibilityDependency(targetId: string): VisibilityRuleSource[] | null {
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//console.log('getVisibilityDependency: ' + targetId);
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return this.visibilityRuleContext.rules.reduce((hasDependency, rule) => {
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if (hasDependency) return hasDependency;
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if (rule.targetControlId === targetId) {
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return rule.sourceVisibilityRules;
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}
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return null;
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}, null) as VisibilityRuleSource[];
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}
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public getVisibilityTargets(sourceId: string): string[] {
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console.log('getVisibilityTargets: ' + sourceId);
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return this.visibilityRuleContext.rules.filter(x => {
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const result = x.sourceVisibilityRules.filter(y => y.sourceControlId === sourceId);
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return result.length;
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}).map(x => x.targetControlId);
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}
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// public appendVisibilityRule(rule: VisibilityRule): void{
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// const existingTargetRule = this.visibilityRuleContext.rules.find( r => r.targetControlId === rule.targetControlId);
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// if(existingTargetRule){
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// rule.sourceVisibilityRules.forEach(svr =>{
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// existingTargetRule.sourceVisibilityRules.push(svr);
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// });
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// }else{
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// this.visibilityRuleContext.rules.push(rule);
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// }
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// }
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//removes rule that has the specific id either as a source either as a target
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public removeAllIdReferences(id: string): void {
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//console.log('removeAllIdReferences: ' + id);
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// * Remove from visibility rues and visibility rules context
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//remove as a target
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const temp = this.visibilityRuleContext.rules.map((x, i) => (x.targetControlId === id) ? i : null);
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const indexes = temp.filter(x => x !== null);
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indexes.reverse().forEach(index => this.visibilityRuleContext.rules.splice(index, 1));
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this.isVisibleMap[id] = undefined;
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//remove as a source
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const tbd = this.visibilityRuleContext.rules.reduce((to_be_deleted, rule, ruleIdx) => {
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const idxs = rule.sourceVisibilityRules.map((x, i) => (x.sourceControlId === id) ? i : null).filter(x => x !== null);
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idxs.reverse().forEach(index => rule.sourceVisibilityRules.splice(index, 1));
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if (!rule.sourceVisibilityRules.length) {
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to_be_deleted.push(ruleIdx);
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}
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return to_be_deleted
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}, []);
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//clean up empty
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tbd.reverse().forEach(index => {
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this.visibilityRuleContext.rules.splice(index, 1);
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});
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// * Remove from computational map
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// as a target
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if (this.elementComputationalMap.get(id)) {
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this.elementComputationalMap.delete(id);
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}
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// as a source
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const keyIterator = this.elementComputationalMap.keys();
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let currentKey = keyIterator.next();
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while (!currentKey.done) {
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const currentVals = this.elementComputationalMap.get(currentKey.value);
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currentVals.delete(id);
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currentKey = keyIterator.next();
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}
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}
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public addNewRule(rule: Rule, currentVisibility = this.DEFAULTVISIBILITY): void {
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//console.log('addNewRule: ' + rule + ' currentVisibility: ' + currentVisibility);
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const targetId = rule.targetField;
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const sourceId = rule.sourceField;
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this.visibilityRuleContext.addToVisibilityRulesContext(rule);
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let visibilityMap = this.elementComputationalMap.get(targetId);
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if (!visibilityMap) {
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visibilityMap = new Map<String, boolean>();
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this.elementComputationalMap.set(targetId, visibilityMap);
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}
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visibilityMap.set(sourceId, currentVisibility);
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const isVisible = this._computeVisibility(targetId);
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this._emitChangesIfNeeded(targetId, isVisible);
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this.isVisibleMap[targetId] = isVisible;
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this.elementVisibilityMapSubject.next(this.isVisibleMap);
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}
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/**
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* Check what sourceId hides or shows the target field
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* return true if no rule found
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*/
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public checkTargetVisibilityProvidedBySource(sourceId: string, targetId: string): boolean {
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//console.log('checkTargetVisibilityProvidedBySource: ' + sourceId + ' targetId: ' + targetId);
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const computationalMap = this.elementComputationalMap.get(targetId);
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if (computationalMap) {
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return !!computationalMap.get(sourceId);
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}
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return true;
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}
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public getVisibilityRulesFromDescriptionTempalte(descriptionTemplate: DescriptionTemplate): Rule[] {
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//console.log('getVisibilityRulesFromDescriptionTempalte: ' + descriptionTemplate);
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const result: Rule[] = this.getVisibilityRulesFromDescriptionTempalteSections(descriptionTemplate?.definition?.pages);
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return result;
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}
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public getVisibilityRulesFromDescriptionTempalteSections(pages: DescriptionTemplatePage[]): Rule[] {
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//console.log('getVisibilityRulesFromDescriptionTempalteSections: ' + sections);
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const result: Rule[] = [];
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pages.forEach(page => {
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page?.sections?.forEach(section => {
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if (section.sections != null) { result.push(...this.getVisibilityRulesFromDescriptionTempalteSections(section.sections)); };
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section?.fieldSets?.forEach(fieldSet => {
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fieldSet?.fields?.forEach(field => {
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field.visibilityRules?.forEach(visibilityRule => {
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result.push({
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sourceField: field.id.toString(),
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targetField: visibilityRule.target,
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requiredValue: visibilityRule.value
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})
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});
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});
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});
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});
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});
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return result;
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}
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}
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class MapWithDefault extends Map<string, boolean> {
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get(key) {
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//console.log('MapWithDefault');
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if (!this.has(key)) {
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this.set(key, true);
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}
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return super.get(key);
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}
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} |