ngx-extended-pdf-viewer
Version:
Embedding PDF files in your Angular application. Highly configurable viewer including the toolbar, sidebar, and all the features you're used to.
131 lines • 21.2 kB
JavaScript
import { Component, effect, EventEmitter, Input, Output, TemplateRef, ViewChild } from '@angular/core';
import * as i0 from "@angular/core";
import * as i1 from "../../../pdf-notification-service";
export class PdfSidebarContentComponent {
notificationService;
customThumbnail;
hideSidebarToolbar = false;
mobileFriendlyZoomScale = 1.0;
defaultThumbnail;
linkService;
thumbnailDrawn = new EventEmitter();
PDFViewerApplication;
thumbnailListener;
get top() {
let top = 0;
if (!this.hideSidebarToolbar) {
top = 32 * this.mobileFriendlyZoomScale;
if (top === 32) {
top = 33; // prevent the border of the sidebar toolbar from being cut off
}
}
return `${top}px`;
}
constructor(notificationService) {
this.notificationService = notificationService;
if (typeof window !== 'undefined') {
effect(() => {
this.PDFViewerApplication = notificationService.onPDFJSInitSignal();
if (this.PDFViewerApplication) {
this.thumbnailListener = this.createThumbnail.bind(this);
this.PDFViewerApplication.eventBus.on('rendercustomthumbnail', this.thumbnailListener);
}
});
}
}
ngOnDestroy() {
this.linkService = undefined;
if (this.thumbnailListener) {
this.PDFViewerApplication?.eventBus.off('rendercustomthumbnail', this.thumbnailListener);
}
}
createThumbnail({ pdfThumbnailView, linkService, id, container, thumbPageTitlePromiseOrPageL10nArgs, }) {
this.linkService = linkService;
const template = this.customThumbnail ?? this.defaultThumbnail;
const view = template.createEmbeddedView(null);
const newElement = view.rootNodes[0];
newElement.classList.remove('pdf-viewer-template');
const anchor = newElement;
anchor.href = linkService.getAnchorUrl(`#page=${id}`);
anchor.className = `thumbnail${id}`;
anchor.setAttribute('data-l10n-id', 'pdfjs-thumb-page-title');
anchor.setAttribute('data-l10n-args', thumbPageTitlePromiseOrPageL10nArgs);
this.replacePageNumberEverywhere(newElement, id.toString());
anchor.onclick = () => {
linkService.page = id;
return false;
};
pdfThumbnailView.anchor = anchor;
const img = newElement.getElementsByTagName('img')[0];
pdfThumbnailView.div = newElement.getElementsByClassName('thumbnail')[0];
container.appendChild(newElement);
const thumbnailDrawnEvent = {
thumbnail: newElement,
container: container,
pageId: id,
};
this.thumbnailDrawn.emit(thumbnailDrawnEvent);
return img;
}
onKeyDown(event) {
if (event.code === 'ArrowDown') {
if (this.linkService) {
if (event.ctrlKey || event.metaKey) {
this.linkService.page = this.linkService.pagesCount;
}
else if (this.linkService.page < this.linkService.pagesCount) {
this.linkService.page = this.linkService.page + 1;
}
event.preventDefault();
}
}
else if (event.code === 'ArrowUp') {
if (this.linkService) {
if (event.ctrlKey || event.metaKey) {
this.linkService.page = 1;
}
else if (this.linkService.page > 1) {
this.linkService.page = this.linkService.page - 1;
}
event.preventDefault();
}
}
}
replacePageNumberEverywhere(element, pageNumber) {
if (element.attributes) {
Array.from(element.attributes).forEach((attr) => {
if (attr.value.includes('PAGE_NUMBER')) {
attr.value = attr.value.replace('PAGE_NUMBER', pageNumber);
}
});
}
element.childNodes.forEach((child) => {
if (child.nodeType === Node.ELEMENT_NODE) {
this.replacePageNumberEverywhere(child, pageNumber);
}
else if (child.nodeType === Node.TEXT_NODE) {
if (child.nodeValue?.includes('PAGE_NUMBER')) {
child.nodeValue = child.nodeValue.replace('PAGE_NUMBER', pageNumber);
}
}
});
}
static ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: PdfSidebarContentComponent, deps: [{ token: i1.PDFNotificationService }], target: i0.ɵɵFactoryTarget.Component });
static ɵcmp = i0.ɵɵngDeclareComponent({ minVersion: "14.0.0", version: "17.3.12", type: PdfSidebarContentComponent, selector: "pdf-sidebar-content", inputs: { customThumbnail: "customThumbnail", hideSidebarToolbar: "hideSidebarToolbar", mobileFriendlyZoomScale: "mobileFriendlyZoomScale" }, outputs: { thumbnailDrawn: "thumbnailDrawn" }, viewQueries: [{ propertyName: "defaultThumbnail", first: true, predicate: ["defaultThumbnail"], descendants: true, read: TemplateRef }], ngImport: i0, template: "<div id=\"sidebarContent\" [style.top]=\"top\">\n <div id=\"thumbnailView\" (keydown)=\"onKeyDown($event)\"></div>\n <div id=\"outlineView\" class=\"hidden\"></div>\n <div id=\"attachmentsView\" class=\"hidden\"></div>\n <div id=\"layersView\" class=\"hidden\"></div>\n</div>\n\n<ng-template #defaultThumbnail>\n <a class=\"pdf-viewer-template\">\n <div class=\"thumbnail\" data-page-number=\"PAGE_NUMBER\">\n <img class=\"thumbnailImage\" alt=\"miniature of the page\" />\n </div>\n </a>\n</ng-template>\n", styles: [""] });
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "17.3.12", ngImport: i0, type: PdfSidebarContentComponent, decorators: [{
type: Component,
args: [{ selector: 'pdf-sidebar-content', template: "<div id=\"sidebarContent\" [style.top]=\"top\">\n <div id=\"thumbnailView\" (keydown)=\"onKeyDown($event)\"></div>\n <div id=\"outlineView\" class=\"hidden\"></div>\n <div id=\"attachmentsView\" class=\"hidden\"></div>\n <div id=\"layersView\" class=\"hidden\"></div>\n</div>\n\n<ng-template #defaultThumbnail>\n <a class=\"pdf-viewer-template\">\n <div class=\"thumbnail\" data-page-number=\"PAGE_NUMBER\">\n <img class=\"thumbnailImage\" alt=\"miniature of the page\" />\n </div>\n </a>\n</ng-template>\n" }]
}], ctorParameters: () => [{ type: i1.PDFNotificationService }], propDecorators: { customThumbnail: [{
type: Input
}], hideSidebarToolbar: [{
type: Input
}], mobileFriendlyZoomScale: [{
type: Input
}], defaultThumbnail: [{
type: ViewChild,
args: ['defaultThumbnail', { read: TemplateRef }]
}], thumbnailDrawn: [{
type: Output
}] } });
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{ Component, effect, EventEmitter, Input, OnDestroy, Output, TemplateRef, ViewChild } from '@angular/core';\nimport { PdfThumbnailDrawnEvent } from '../../../events/pdf-thumbnail-drawn-event';\nimport { IPDFViewerApplication } from '../../../options/pdf-viewer-application';\nimport { PDFNotificationService } from '../../../pdf-notification-service';\ndeclare class PDFThumbnailView {\n  anchor: HTMLAnchorElement;\n  div: HTMLElement;\n  ring: HTMLElement;\n  canvasWidth: number;\n  canvasHeight: number;\n}\n\ninterface RenderCustomThumbnailEvent {\n  pdfThumbnailView: PDFThumbnailView;\n  linkService: PDFLinkService;\n  id: number;\n  container: HTMLDivElement;\n  thumbPageTitlePromiseOrPageL10nArgs: string;\n}\n\ndeclare class PDFLinkService {\n  public page: number;\n  public pagesCount: number;\n  public getAnchorUrl(targetUrl: string): string;\n}\n\n@Component({\n  selector: 'pdf-sidebar-content',\n  templateUrl: './pdf-sidebar-content.component.html',\n  styleUrls: ['./pdf-sidebar-content.component.css'],\n})\nexport class PdfSidebarContentComponent implements OnDestroy {\n  @Input()\n  public customThumbnail: TemplateRef<any> | undefined;\n\n  @Input()\n  public hideSidebarToolbar = false;\n\n  @Input()\n  public mobileFriendlyZoomScale = 1.0;\n\n  @ViewChild('defaultThumbnail', { read: TemplateRef })\n  public defaultThumbnail!: TemplateRef<any>;\n\n  private linkService: PDFLinkService | undefined;\n\n  @Output()\n  public thumbnailDrawn = new EventEmitter<PdfThumbnailDrawnEvent>();\n\n  private PDFViewerApplication!: IPDFViewerApplication | undefined;\n\n  private thumbnailListener: any;\n\n  public get top(): string {\n    let top = 0;\n    if (!this.hideSidebarToolbar) {\n      top = 32 * this.mobileFriendlyZoomScale;\n      if (top === 32) {\n        top = 33; // prevent the border of the sidebar toolbar from being cut off\n      }\n    }\n    return `${top}px`;\n  }\n\n  constructor(public notificationService: PDFNotificationService) {\n    if (typeof window !== 'undefined') {\n      effect(() => {\n        this.PDFViewerApplication = notificationService.onPDFJSInitSignal();\n        if (this.PDFViewerApplication) {\n          this.thumbnailListener = this.createThumbnail.bind(this);\n          this.PDFViewerApplication.eventBus.on('rendercustomthumbnail', this.thumbnailListener);\n        }\n      });\n    }\n  }\n\n  public ngOnDestroy(): void {\n    this.linkService = undefined;\n    if (this.thumbnailListener) {\n      this.PDFViewerApplication?.eventBus.off('rendercustomthumbnail', this.thumbnailListener);\n    }\n  }\n\n  private createThumbnail({\n    pdfThumbnailView,\n    linkService,\n    id,\n    container,\n    thumbPageTitlePromiseOrPageL10nArgs,\n  }: RenderCustomThumbnailEvent): HTMLImageElement | undefined {\n    this.linkService = linkService;\n    const template = this.customThumbnail ?? this.defaultThumbnail;\n    const view = template.createEmbeddedView(null);\n    const newElement = view.rootNodes[0] as HTMLElement;\n    newElement.classList.remove('pdf-viewer-template');\n\n    const anchor = newElement as HTMLAnchorElement;\n    anchor.href = linkService.getAnchorUrl(`#page=${id}`);\n    anchor.className = `thumbnail${id}`;\n\n    anchor.setAttribute('data-l10n-id', 'pdfjs-thumb-page-title');\n    anchor.setAttribute('data-l10n-args', thumbPageTitlePromiseOrPageL10nArgs);\n\n    this.replacePageNumberEverywhere(newElement, id.toString());\n\n    anchor.onclick = () => {\n      linkService.page = id;\n      return false;\n    };\n    pdfThumbnailView.anchor = anchor;\n\n    const img: HTMLImageElement | undefined = newElement.getElementsByTagName('img')[0];\n    pdfThumbnailView.div = newElement.getElementsByClassName('thumbnail')[0] as HTMLElement;\n\n    container.appendChild(newElement);\n\n    const thumbnailDrawnEvent: PdfThumbnailDrawnEvent = {\n      thumbnail: newElement,\n      container: container,\n      pageId: id,\n    };\n    this.thumbnailDrawn.emit(thumbnailDrawnEvent);\n    return img;\n  }\n\n  public onKeyDown(event: KeyboardEvent): void {\n    if (event.code === 'ArrowDown') {\n      if (this.linkService) {\n        if (event.ctrlKey || event.metaKey) {\n          this.linkService.page = this.linkService.pagesCount;\n        } else if (this.linkService.page < this.linkService.pagesCount) {\n          this.linkService.page = this.linkService.page + 1;\n        }\n        event.preventDefault();\n      }\n    } else if (event.code === 'ArrowUp') {\n      if (this.linkService) {\n        if (event.ctrlKey || event.metaKey) {\n          this.linkService.page = 1;\n        } else if (this.linkService.page > 1) {\n          this.linkService.page = this.linkService.page - 1;\n        }\n        event.preventDefault();\n      }\n    }\n  }\n\n  private replacePageNumberEverywhere(element: Element, pageNumber: string): void {\n    if (element.attributes) {\n      Array.from(element.attributes).forEach((attr) => {\n        if (attr.value.includes('PAGE_NUMBER')) {\n          attr.value = attr.value.replace('PAGE_NUMBER', pageNumber);\n        }\n      });\n    }\n\n    element.childNodes.forEach((child) => {\n      if (child.nodeType === Node.ELEMENT_NODE) {\n        this.replacePageNumberEverywhere(child as Element, pageNumber);\n      } else if (child.nodeType === Node.TEXT_NODE) {\n        if (child.nodeValue?.includes('PAGE_NUMBER')) {\n          child.nodeValue = child.nodeValue.replace('PAGE_NUMBER', pageNumber);\n        }\n      }\n    });\n  }\n}\n","<div id=\"sidebarContent\" [style.top]=\"top\">\n  <div id=\"thumbnailView\" (keydown)=\"onKeyDown($event)\"></div>\n  <div id=\"outlineView\" class=\"hidden\"></div>\n  <div id=\"attachmentsView\" class=\"hidden\"></div>\n  <div id=\"layersView\" class=\"hidden\"></div>\n</div>\n\n<ng-template #defaultThumbnail>\n  <a class=\"pdf-viewer-template\">\n    <div class=\"thumbnail\" data-page-number=\"PAGE_NUMBER\">\n      <img class=\"thumbnailImage\" alt=\"miniature of the page\" />\n    </div>\n  </a>\n</ng-template>\n"]}