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import {Component, Input, ElementRef} from '@angular/core';
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@Component({
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selector: 'showIdentifiers',
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template: `
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<span *ngIf="countIdentifiers() > 0" class="uk-text-bold">Related identifiers:</span>
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<span *ngIf="showAll && countIdentifiers() > pageSize">
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<a (click)="showAll = !showAll;">View less identifiers</a>
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</span>
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<ng-container *ngFor="let key of getKeys(identifiers) let i=index">
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<ng-container *ngIf="countSizeOfPreviousIdentifiers(i) < pageSize">
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<ng-container *ngFor="let item of identifiers.get(key) let j=index">
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<span *ngIf="(sizeOfPreviousIdentifiers + j) < pageSize || showAll" class="custom-external custom-icon">
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<a *ngIf="key=='doi'" href="{{doiURL}}{{item}}" target="_blank">{{key}}: {{item}}</a><a
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*ngIf="key=='pmc'" href="{{pmcURL}}{{item}}" target="_blank">{{key}}: {{item}}</a><a
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*ngIf="key=='handle'" href="{{handleURL}}{{item}}" target="_blank">{{key}}: {{item}}</a></span><span
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*ngIf="((sizeOfPreviousIdentifiers + j) < pageSize || showAll) && ((sizeOfPreviousIdentifiers + j) < countIdentifiers()-1)">{{", "}}</span>
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<span *ngIf="!showAll && (sizeOfPreviousIdentifiers + j)==pageSize"> ... </span>
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</ng-container>
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</ng-container>
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</ng-container>
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<span *ngIf="!showAll && countIdentifiers() > pageSize">
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<a (click)="showAll = !showAll;">
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view all {{countIdentifiers() | number}} identifiers
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</a>
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</span>
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<span *ngIf="showAll && countIdentifiers() > pageSize">
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<a (click)="showAll = !showAll; scroll()">View less identifiers</a>
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</span>
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`
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})
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export class ShowIdentifiersComponent {
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@Input() identifiers: Map<string, string[]>;
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public doiURL: string;
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public pmcURL: string;
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public handleURL: string;
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public showAll: boolean = false;
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public sizeOfIdentifiers: number = -1;
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public sizeOfPreviousIdentifiers: number = -1;
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public pageSize: number = 10;
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constructor (private element: ElementRef) {
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this.doiURL = "https://dx.doi.org/";
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this.pmcURL = "http://europepmc.org/articles/";
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this.handleURL = "http://hdl.handle.net/";
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}
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ngOnInit() {}
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public countIdentifiers(): number {
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if(this.sizeOfIdentifiers < 0) {
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let num: number = 0;
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if(this.identifiers != undefined) {
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this.identifiers.forEach(function (value, key, map) {
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num += value.length;
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});
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}
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this.sizeOfIdentifiers = num;
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}
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return this.sizeOfIdentifiers;
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}
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public countSizeOfPreviousIdentifiers(index: number): number {
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let num: number = 0;
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let i: number = 0;
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if(this.identifiers != undefined) {
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this.identifiers.forEach(function (value, key, map) {
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if(i < index) {
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num += value.length;
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}
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i++;
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});
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}
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this.sizeOfPreviousIdentifiers= num;
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return num;
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}
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public scroll() {
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if (typeof document !== 'undefined') {
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this.element.nativeElement.scrollIntoView();
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}
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}
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public getKeys( map) {
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return Array.from(map.keys());
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}
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}
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