97 lines
2.2 KiB
JavaScript
97 lines
2.2 KiB
JavaScript
|
/* Copyright 2021 Mozilla Foundation
|
||
|
*
|
||
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
* you may not use this file except in compliance with the License.
|
||
|
* You may obtain a copy of the License at
|
||
|
*
|
||
|
* http://www.apache.org/licenses/LICENSE-2.0
|
||
|
*
|
||
|
* Unless required by applicable law or agreed to in writing, software
|
||
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
* See the License for the specific language governing permissions and
|
||
|
* limitations under the License.
|
||
|
*/
|
||
|
|
||
|
import { XfaLayer } from "pdfjs-lib";
|
||
|
|
||
|
/**
|
||
|
* @typedef {Object} XfaLayerBuilderOptions
|
||
|
* @property {HTMLDivElement} pageDiv
|
||
|
* @property {PDFPage} pdfPage
|
||
|
*/
|
||
|
|
||
|
class XfaLayerBuilder {
|
||
|
/**
|
||
|
* @param {XfaLayerBuilderOptions} options
|
||
|
*/
|
||
|
constructor({ pageDiv, pdfPage }) {
|
||
|
this.pageDiv = pageDiv;
|
||
|
this.pdfPage = pdfPage;
|
||
|
|
||
|
this.div = null;
|
||
|
this._cancelled = false;
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @param {PageViewport} viewport
|
||
|
* @param {string} intent (default value is 'display')
|
||
|
* @returns {Promise<void>} A promise that is resolved when rendering of the
|
||
|
* annotations is complete.
|
||
|
*/
|
||
|
render(viewport, intent = "display") {
|
||
|
return this.pdfPage.getXfa().then(xfa => {
|
||
|
if (this._cancelled) {
|
||
|
return;
|
||
|
}
|
||
|
|
||
|
const parameters = {
|
||
|
viewport: viewport.clone({ dontFlip: true }),
|
||
|
div: this.div,
|
||
|
xfa,
|
||
|
page: this.pdfPage,
|
||
|
};
|
||
|
|
||
|
if (this.div) {
|
||
|
XfaLayer.update(parameters);
|
||
|
} else {
|
||
|
// Create an xfa layer div and render the form
|
||
|
this.div = document.createElement("div");
|
||
|
this.pageDiv.appendChild(this.div);
|
||
|
parameters.div = this.div;
|
||
|
|
||
|
XfaLayer.render(parameters);
|
||
|
}
|
||
|
});
|
||
|
}
|
||
|
|
||
|
cancel() {
|
||
|
this._cancelled = true;
|
||
|
}
|
||
|
|
||
|
hide() {
|
||
|
if (!this.div) {
|
||
|
return;
|
||
|
}
|
||
|
this.div.hidden = true;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/**
|
||
|
* @implements IPDFXfaLayerFactory
|
||
|
*/
|
||
|
class DefaultXfaLayerFactory {
|
||
|
/**
|
||
|
* @param {HTMLDivElement} pageDiv
|
||
|
* @param {PDFPage} pdfPage
|
||
|
*/
|
||
|
createXfaLayerBuilder(pageDiv, pdfPage) {
|
||
|
return new XfaLayerBuilder({
|
||
|
pageDiv,
|
||
|
pdfPage,
|
||
|
});
|
||
|
}
|
||
|
}
|
||
|
|
||
|
export { DefaultXfaLayerFactory, XfaLayerBuilder };
|