pdfjs-dist/lib/web/annotation_layer_builder.js

/**
 * @licstart The following is the entire license notice for the
 * JavaScript code in this page
 *
 * Copyright 2022 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.
 *
 * @licend The above is the entire license notice for the
 * JavaScript code in this page
 */
"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.AnnotationLayerBuilder = void 0;

var _pdf = require("../pdf");

var _l10n_utils = require("./l10n_utils.js");

class AnnotationLayerBuilder {
  constructor({
    pageDiv,
    pdfPage,
    linkService,
    downloadManager,
    annotationStorage = null,
    imageResourcesPath = "",
    renderForms = true,
    l10n = _l10n_utils.NullL10n,
    enableScripting = false,
    hasJSActionsPromise = null,
    fieldObjectsPromise = null,
    mouseState = null,
    annotationCanvasMap = null,
    accessibilityManager = null
  }) {
    this.pageDiv = pageDiv;
    this.pdfPage = pdfPage;
    this.linkService = linkService;
    this.downloadManager = downloadManager;
    this.imageResourcesPath = imageResourcesPath;
    this.renderForms = renderForms;
    this.l10n = l10n;
    this.annotationStorage = annotationStorage;
    this.enableScripting = enableScripting;
    this._hasJSActionsPromise = hasJSActionsPromise;
    this._fieldObjectsPromise = fieldObjectsPromise;
    this._mouseState = mouseState;
    this._annotationCanvasMap = annotationCanvasMap;
    this._accessibilityManager = accessibilityManager;
    this.div = null;
    this._cancelled = false;
  }

  async render(viewport, intent = "display") {
    const [annotations, hasJSActions = false, fieldObjects = null] = await Promise.all([this.pdfPage.getAnnotations({
      intent
    }), this._hasJSActionsPromise, this._fieldObjectsPromise]);

    if (this._cancelled || annotations.length === 0) {
      return;
    }

    const parameters = {
      viewport: viewport.clone({
        dontFlip: true
      }),
      div: this.div,
      annotations,
      page: this.pdfPage,
      imageResourcesPath: this.imageResourcesPath,
      renderForms: this.renderForms,
      linkService: this.linkService,
      downloadManager: this.downloadManager,
      annotationStorage: this.annotationStorage,
      enableScripting: this.enableScripting,
      hasJSActions,
      fieldObjects,
      mouseState: this._mouseState,
      annotationCanvasMap: this._annotationCanvasMap,
      accessibilityManager: this._accessibilityManager
    };

    if (this.div) {
      _pdf.AnnotationLayer.update(parameters);
    } else {
      this.div = document.createElement("div");
      this.div.className = "annotationLayer";
      this.pageDiv.append(this.div);
      parameters.div = this.div;

      _pdf.AnnotationLayer.render(parameters);

      this.l10n.translate(this.div);
    }
  }

  cancel() {
    this._cancelled = true;
  }

  hide() {
    if (!this.div) {
      return;
    }

    this.div.hidden = true;
  }

}

exports.AnnotationLayerBuilder = AnnotationLayerBuilder;