@hmcts/annotation-ui-lib
Version:
PDF Viewer and ability to highlight text with and comment tracking
203 lines • 17.8 kB
JavaScript
/**
* @fileoverview added by tsickle
* @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
import { Injectable } from '@angular/core';
import { PdfWrapper } from './js-wrapper/pdf-wrapper';
import { PdfAnnotateWrapper } from './js-wrapper/pdf-annotate-wrapper';
import { BehaviorSubject, Subject } from 'rxjs';
import { EmLoggerService } from '../logging/em-logger.service';
import { RotationModel } from '../model/rotation-factory.model';
export class PdfRenderService {
/**
* @param {?} pdfWrapper
* @param {?} log
* @param {?} pdfAnnotateWrapper
*/
constructor(pdfWrapper, log, pdfAnnotateWrapper) {
this.pdfWrapper = pdfWrapper;
this.log = log;
this.pdfAnnotateWrapper = pdfAnnotateWrapper;
this.listPages = [];
this.log.setClass('PdfRenderService');
this.dataLoadedSubject = new BehaviorSubject(false);
this.listPagesSubject = new Subject();
}
/**
* @return {?}
*/
getDataLoadedSub() {
return this.dataLoadedSubject;
}
/**
* @param {?} isLoaded
* @return {?}
*/
dataLoadedUpdate(isLoaded) {
this.dataLoadedSubject.next(isLoaded);
}
/**
* @return {?}
*/
getRenderOptions() {
return Object.assign({}, this.RENDER_OPTIONS);
}
/**
* @param {?} RENDER_OPTIONS
* @return {?}
*/
setRenderOptions(RENDER_OPTIONS) {
this.RENDER_OPTIONS = RENDER_OPTIONS;
}
/**
* @return {?}
*/
getViewerElementRef() {
return this.viewerElementRef;
}
/**
* @return {?}
*/
getPdfPages() {
return this.pdfPages;
}
/**
* @param {?=} viewerElementRef
* @return {?}
*/
render(viewerElementRef) {
if (viewerElementRef != null) {
this.viewerElementRef = viewerElementRef;
}
/** @type {?} */
const renderOptions = this.getRenderOptions();
this.pdfWrapper.getDocument(renderOptions.documentId)
.then(pdf => {
renderOptions.pdfDocument = pdf;
/** @type {?} */
const viewer = this.viewerElementRef.nativeElement;
viewer.innerHTML = '';
this.pdfPages = pdf.pdfInfo.numPages;
this.listPages = [];
for (let i = 1; i < this.pdfPages + 1; i++) {
/** @type {?} */
const pageDom = this.pdfAnnotateWrapper.createPage(i);
// Create a copy of the render options for each page.
/** @type {?} */
const pageOptions = Object.assign({}, renderOptions);
viewer.appendChild(pageDom);
this.addDomPage(pageDom, i);
pdf.getPage(i).then((pdfPage) => {
// Get current page rotation from page rotation objects
pageOptions.rotate = this.addPageRotation(renderOptions, pageOptions, pdfPage);
setTimeout(() => {
this.pdfAnnotateWrapper.renderPage(i, pageOptions).then(() => {
if (i === this.pdfPages) {
this.setRenderOptions(renderOptions);
this.dataLoadedUpdate(true);
this.listPagesSubject.next(this.listPages);
}
});
});
});
}
}).catch((error) => {
/** @type {?} */
const errorMessage = new Error('Unable to render your supplied PDF. ' +
renderOptions.documentId + '. Error is: ' + error);
this.log.error('Encountered error while rendering the PDF:' + errorMessage);
});
}
/**
* @param {?} pageDom
* @param {?} pageNumber
* @return {?}
*/
addDomPage(pageDom, pageNumber) {
/** @type {?} */
const pagedetails = new RotationModel(pageNumber, pageDom);
/** @type {?} */
const index = this.listPages.findIndex(pageElement => pageElement.pageNumber === pageNumber);
if (index > 0) {
this.listPages[index] = pagedetails;
}
else {
this.listPages.push(pagedetails);
}
}
/**
* @param {?} renderOptions
* @param {?} pageOptions
* @param {?} pdfPage
* @return {?}
*/
addPageRotation(renderOptions, pageOptions, pdfPage) {
/** @type {?} */
let rotation = this.getPageRotation(pageOptions, pdfPage);
if (!rotation) {
renderOptions.rotationPages.push({ page: pdfPage.pageNumber, rotate: pdfPage.rotate });
rotation = pdfPage.rotate;
}
return rotation;
}
/**
* @param {?} pageOptions
* @param {?} pdfPage
* @return {?}
*/
getPageRotation(pageOptions, pdfPage) {
return pageOptions.rotationPages
.filter(rotateObj => rotateObj.page === pdfPage.pageNumber)
.map(rotateObj => rotateObj.rotate)[0];
}
}
PdfRenderService.decorators = [
{ type: Injectable }
];
PdfRenderService.ctorParameters = () => [
{ type: PdfWrapper },
{ type: EmLoggerService },
{ type: PdfAnnotateWrapper }
];
if (false) {
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.viewerElementRef;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.RENDER_OPTIONS;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.pdfPages;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.dataLoadedSubject;
/** @type {?} */
PdfRenderService.prototype.listPagesSubject;
/** @type {?} */
PdfRenderService.prototype.listPages;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.pdfWrapper;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.log;
/**
* @type {?}
* @private
*/
PdfRenderService.prototype.pdfAnnotateWrapper;
}
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{ Injectable, ElementRef } from '@angular/core';\nimport { RenderOptions } from './js-wrapper/renderOptions.model';\nimport { PdfWrapper } from './js-wrapper/pdf-wrapper';\nimport { PdfAnnotateWrapper } from './js-wrapper/pdf-annotate-wrapper';\nimport { BehaviorSubject, Subject } from 'rxjs';\nimport { EmLoggerService } from '../logging/em-logger.service';\nimport { RotationModel } from '../model/rotation-factory.model';\n\n@Injectable()\nexport class PdfRenderService {\n\n    private viewerElementRef: ElementRef;\n    private RENDER_OPTIONS: RenderOptions;\n    private pdfPages: number;\n    private dataLoadedSubject: BehaviorSubject<boolean>;\n\n    listPagesSubject: Subject<RotationModel[]>;\n    listPages: RotationModel[] = [];\n\n    constructor(private pdfWrapper: PdfWrapper,\n                private log: EmLoggerService,\n                private pdfAnnotateWrapper: PdfAnnotateWrapper) {\n        this.log.setClass('PdfRenderService');\n        this.dataLoadedSubject = new BehaviorSubject(false);\n        this.listPagesSubject = new Subject();\n    }\n\n    getDataLoadedSub(): BehaviorSubject<boolean> {\n        return this.dataLoadedSubject;\n    }\n\n    dataLoadedUpdate(isLoaded: boolean) {\n        this.dataLoadedSubject.next(isLoaded);\n    }\n\n    getRenderOptions() {\n        return Object.assign({}, this.RENDER_OPTIONS);\n    }\n\n    setRenderOptions(RENDER_OPTIONS: RenderOptions): any {\n        this.RENDER_OPTIONS = RENDER_OPTIONS;\n    }\n\n    getViewerElementRef(): ElementRef {\n        return this.viewerElementRef;\n    }\n\n    getPdfPages(): number {\n        return this.pdfPages;\n    }\n    \n    render(viewerElementRef?: ElementRef) {\n        if (viewerElementRef != null) {\n            this.viewerElementRef = viewerElementRef;\n        }\n\n        const renderOptions = this.getRenderOptions();\n        this.pdfWrapper.getDocument(renderOptions.documentId)\n            .then(pdf => {\n                renderOptions.pdfDocument = pdf;\n                const viewer = this.viewerElementRef.nativeElement;\n                viewer.innerHTML = '';\n                this.pdfPages = pdf.pdfInfo.numPages;\n                this.listPages = [];\n\n                for (let i = 1; i < this.pdfPages + 1; i++) {\n                    const pageDom = this.pdfAnnotateWrapper.createPage(i);\n                    // Create a copy of the render options for each page.\n                    const pageOptions = Object.assign({}, renderOptions);\n                    viewer.appendChild(pageDom);\n                    this.addDomPage(pageDom, i);\n                    pdf.getPage(i).then((pdfPage) => {\n                        // Get current page rotation from page rotation objects\n                        pageOptions.rotate = this.addPageRotation(renderOptions, pageOptions, pdfPage);\n                        setTimeout(() => {\n                            this.pdfAnnotateWrapper.renderPage(i, pageOptions).then(() => {\n                                if (i === this.pdfPages) {\n                                    this.setRenderOptions(renderOptions);\n                                    this.dataLoadedUpdate(true);\n                                    this.listPagesSubject.next(this.listPages);\n                                }\n                            });\n                        });\n                    });\n                }\n            }).catch(\n            (error) => {\n                const errorMessage = new Error('Unable to render your supplied PDF. ' +\n                renderOptions.documentId + '. Error is: ' + error);\n                this.log.error('Encountered error while rendering the PDF:' + errorMessage);\n            });\n    }\n\n    addDomPage(pageDom: any, pageNumber: number) {\n        const pagedetails = new RotationModel(pageNumber, pageDom);\n        const index = this.listPages.findIndex(pageElement => pageElement.pageNumber === pageNumber);\n        if (index > 0) {\n            this.listPages[index] = pagedetails;\n        } else {\n            this.listPages.push(pagedetails);\n        }\n    }\n\n    addPageRotation(renderOptions: RenderOptions, pageOptions: RenderOptions, pdfPage: any): number {\n        let rotation = this.getPageRotation(pageOptions, pdfPage);\n        if (!rotation) {\n            renderOptions.rotationPages.push({page: pdfPage.pageNumber, rotate: pdfPage.rotate});\n            rotation = pdfPage.rotate;\n        }\n        return rotation;\n    }\n\n    getPageRotation(pageOptions: RenderOptions, pdfPage: any): number {\n      return pageOptions.rotationPages\n        .filter(rotateObj => rotateObj.page === pdfPage.pageNumber)\n        .map(rotateObj => rotateObj.rotate)[0];\n    }\n}\n"]}