pdf.js/web/annotation_layer_builder.js
2017-04-14 10:32:36 -05:00

134 lines
3.9 KiB
JavaScript

/* Copyright 2014 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 { AnnotationLayer } from './pdfjs';
import { mozL10n } from './ui_utils';
import { SimpleLinkService } from './pdf_link_service';
/**
* @typedef {Object} AnnotationLayerBuilderOptions
* @property {HTMLDivElement} pageDiv
* @property {PDFPage} pdfPage
* @property {boolean} renderInteractiveForms
* @property {IPDFLinkService} linkService
* @property {DownloadManager} downloadManager
*/
/**
* @class
*/
var AnnotationLayerBuilder = (function AnnotationLayerBuilderClosure() {
/**
* @param {AnnotationLayerBuilderOptions} options
* @constructs AnnotationLayerBuilder
*/
function AnnotationLayerBuilder(options) {
this.pageDiv = options.pageDiv;
this.pdfPage = options.pdfPage;
this.renderInteractiveForms = options.renderInteractiveForms;
this.linkService = options.linkService;
this.downloadManager = options.downloadManager;
this.div = null;
}
AnnotationLayerBuilder.prototype =
/** @lends AnnotationLayerBuilder.prototype */ {
/**
* @param {PageViewport} viewport
* @param {string} intent (default value is 'display')
*/
render: function AnnotationLayerBuilder_render(viewport, intent) {
var self = this;
var parameters = {
intent: (intent === undefined ? 'display' : intent),
};
this.pdfPage.getAnnotations(parameters).then(function (annotations) {
viewport = viewport.clone({ dontFlip: true });
parameters = {
viewport: viewport,
div: self.div,
annotations: annotations,
page: self.pdfPage,
renderInteractiveForms: self.renderInteractiveForms,
linkService: self.linkService,
downloadManager: self.downloadManager,
};
if (self.div) {
// If an annotationLayer already exists, refresh its children's
// transformation matrices.
AnnotationLayer.update(parameters);
} else {
// Create an annotation layer div and render the annotations
// if there is at least one annotation.
if (annotations.length === 0) {
return;
}
self.div = document.createElement('div');
self.div.className = 'annotationLayer';
self.pageDiv.appendChild(self.div);
parameters.div = self.div;
AnnotationLayer.render(parameters);
if (typeof mozL10n !== 'undefined') {
mozL10n.translate(self.div);
}
}
});
},
hide: function AnnotationLayerBuilder_hide() {
if (!this.div) {
return;
}
this.div.setAttribute('hidden', 'true');
}
};
return AnnotationLayerBuilder;
})();
/**
* @constructor
* @implements IPDFAnnotationLayerFactory
*/
function DefaultAnnotationLayerFactory() {}
DefaultAnnotationLayerFactory.prototype = {
/**
* @param {HTMLDivElement} pageDiv
* @param {PDFPage} pdfPage
* @param {boolean} renderInteractiveForms
* @returns {AnnotationLayerBuilder}
*/
createAnnotationLayerBuilder: function (pageDiv, pdfPage,
renderInteractiveForms) {
return new AnnotationLayerBuilder({
pageDiv: pageDiv,
pdfPage: pdfPage,
renderInteractiveForms: renderInteractiveForms,
linkService: new SimpleLinkService(),
});
}
};
export {
AnnotationLayerBuilder,
DefaultAnnotationLayerFactory,
};