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XFA - Add a storage to save fields values - this is required to be able to print (or save) a document. Some pages can be unloaded (because pdf.js is lazy) and this storage will help to save their data in order to resuse them when printing or just when displaying a page again.
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5 changed files with 110 additions and 30 deletions
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@ -19,15 +19,17 @@ import { XfaLayer } from "pdfjs-lib";
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* @typedef {Object} XfaLayerBuilderOptions
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* @property {HTMLDivElement} pageDiv
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* @property {PDFPage} pdfPage
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* @property {AnnotationStorage} [annotationStorage]
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*/
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class XfaLayerBuilder {
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/**
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* @param {XfaLayerBuilderOptions} options
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*/
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constructor({ pageDiv, pdfPage }) {
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constructor({ pageDiv, pdfPage, annotationStorage }) {
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this.pageDiv = pageDiv;
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this.pdfPage = pdfPage;
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this.annotationStorage = annotationStorage;
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this.div = null;
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this._cancelled = false;
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@ -40,29 +42,34 @@ class XfaLayerBuilder {
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* annotations is complete.
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*/
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render(viewport, intent = "display") {
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return this.pdfPage.getXfa().then(xfa => {
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if (this._cancelled) {
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return;
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}
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return this.pdfPage
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.getXfa()
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.then(xfa => {
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if (this._cancelled) {
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return;
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}
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const parameters = {
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viewport: viewport.clone({ dontFlip: true }),
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div: this.div,
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xfa,
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page: this.pdfPage,
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annotationStorage: this.annotationStorage,
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};
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const parameters = {
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viewport: viewport.clone({ dontFlip: true }),
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div: this.div,
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xfa,
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page: this.pdfPage,
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};
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if (this.div) {
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XfaLayer.update(parameters);
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} else {
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// Create an xfa layer div and render the form
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this.div = document.createElement("div");
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this.pageDiv.appendChild(this.div);
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parameters.div = this.div;
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if (this.div) {
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XfaLayer.update(parameters);
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} else {
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// Create an xfa layer div and render the form
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this.div = document.createElement("div");
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this.pageDiv.appendChild(this.div);
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parameters.div = this.div;
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XfaLayer.render(parameters);
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}
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});
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XfaLayer.render(parameters);
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}
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})
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.catch(error => {
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console.error(error);
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});
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}
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cancel() {
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@ -84,11 +91,13 @@ class DefaultXfaLayerFactory {
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/**
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* @param {HTMLDivElement} pageDiv
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* @param {PDFPage} pdfPage
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* @param {AnnotationStorage} [annotationStorage]
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*/
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createXfaLayerBuilder(pageDiv, pdfPage) {
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createXfaLayerBuilder(pageDiv, pdfPage, annotationStorage = null) {
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return new XfaLayerBuilder({
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pageDiv,
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pdfPage,
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annotationStorage,
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});
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}
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}
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