From fa1b05edff96a864bb38c691930399f7870bc19c Mon Sep 17 00:00:00 2001
From: Adam Eisenreich <Akxe@seznam.cz>
Date: Mon, 22 May 2023 12:32:08 +0200
Subject: [PATCH] Fix: Provide default ID to resolve possible conflicts

---
 lib/src/ng2-pdfjs-viewer.component.ts | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/lib/src/ng2-pdfjs-viewer.component.ts b/lib/src/ng2-pdfjs-viewer.component.ts
index a578d30d..f9452fe4 100644
--- a/lib/src/ng2-pdfjs-viewer.component.ts
+++ b/lib/src/ng2-pdfjs-viewer.component.ts
@@ -5,8 +5,9 @@ import { Component, Input, Output, ViewChild, EventEmitter, ElementRef } from '@
   template: `<iframe title="ng2-pdfjs-viewer" [hidden]="externalWindow || (!externalWindow && !pdfSrc)" #iframe width="100%" height="100%"></iframe>`
 })
 export class PdfJsViewerComponent {
-  @ViewChild('iframe', {static: true}) iframe: ElementRef;
-  @Input() public viewerId: string;
+  @ViewChild('iframe', { static: true }) iframe: ElementRef;
+  static lastID = 0;
+  @Input() public viewerId = `ng2-pdfjs-viewer-ID${++lastID}`;
   @Output() onBeforePrint: EventEmitter<any> = new EventEmitter();
   @Output() onAfterPrint: EventEmitter<any> = new EventEmitter();
   @Output() onDocumentLoad: EventEmitter<any> = new EventEmitter();
@@ -40,12 +41,12 @@ export class PdfJsViewerComponent {
   @Input() public errorAppend: boolean = true;
   @Input() public errorMessage: string;
   @Input() public diagnosticLogs: boolean = true;
-  
+
   @Input() public externalWindowOptions: string;
   public viewerTab: any;
   private _src: string | Blob | Uint8Array;
   private _page: number;
-  
+
   @Input()
   public set page(_page: number) {
     this._page = _page;
@@ -274,7 +275,7 @@ export class PdfJsViewerComponent {
     if (this.useOnlyCssZoom) {
       viewerUrl += `&useOnlyCssZoom=${this.useOnlyCssZoom}`;
     }
-    
+
     if (this._page || this.zoom || this.nameddest || this.pagemode) viewerUrl += "#"
     if (this._page) {
       viewerUrl += `&page=${this._page}`;
@@ -334,4 +335,4 @@ export class PdfJsViewerComponent {
     //   pagemode = ${this.errorMessage}
     // `);
   }
-}
\ No newline at end of file
+}