pdfjs-dist/lib/display/annotation_layer.js

/**
 * @licstart The following is the entire license notice for the
 * Javascript code in this page
 *
 * Copyright 2020 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.AnnotationLayer = void 0;

var _display_utils = require("./display_utils.js");

var _util = require("../shared/util.js");

class AnnotationElementFactory {
  static create(parameters) {
    const subtype = parameters.data.annotationType;

    switch (subtype) {
      case _util.AnnotationType.LINK:
        return new LinkAnnotationElement(parameters);

      case _util.AnnotationType.TEXT:
        return new TextAnnotationElement(parameters);

      case _util.AnnotationType.WIDGET:
        const fieldType = parameters.data.fieldType;

        switch (fieldType) {
          case "Tx":
            return new TextWidgetAnnotationElement(parameters);

          case "Btn":
            if (parameters.data.radioButton) {
              return new RadioButtonWidgetAnnotationElement(parameters);
            } else if (parameters.data.checkBox) {
              return new CheckboxWidgetAnnotationElement(parameters);
            }

            return new PushButtonWidgetAnnotationElement(parameters);

          case "Ch":
            return new ChoiceWidgetAnnotationElement(parameters);
        }

        return new WidgetAnnotationElement(parameters);

      case _util.AnnotationType.POPUP:
        return new PopupAnnotationElement(parameters);

      case _util.AnnotationType.FREETEXT:
        return new FreeTextAnnotationElement(parameters);

      case _util.AnnotationType.LINE:
        return new LineAnnotationElement(parameters);

      case _util.AnnotationType.SQUARE:
        return new SquareAnnotationElement(parameters);

      case _util.AnnotationType.CIRCLE:
        return new CircleAnnotationElement(parameters);

      case _util.AnnotationType.POLYLINE:
        return new PolylineAnnotationElement(parameters);

      case _util.AnnotationType.CARET:
        return new CaretAnnotationElement(parameters);

      case _util.AnnotationType.INK:
        return new InkAnnotationElement(parameters);

      case _util.AnnotationType.POLYGON:
        return new PolygonAnnotationElement(parameters);

      case _util.AnnotationType.HIGHLIGHT:
        return new HighlightAnnotationElement(parameters);

      case _util.AnnotationType.UNDERLINE:
        return new UnderlineAnnotationElement(parameters);

      case _util.AnnotationType.SQUIGGLY:
        return new SquigglyAnnotationElement(parameters);

      case _util.AnnotationType.STRIKEOUT:
        return new StrikeOutAnnotationElement(parameters);

      case _util.AnnotationType.STAMP:
        return new StampAnnotationElement(parameters);

      case _util.AnnotationType.FILEATTACHMENT:
        return new FileAttachmentAnnotationElement(parameters);

      default:
        return new AnnotationElement(parameters);
    }
  }

}

class AnnotationElement {
  constructor(parameters, isRenderable = false, ignoreBorder = false) {
    this.isRenderable = isRenderable;
    this.data = parameters.data;
    this.layer = parameters.layer;
    this.page = parameters.page;
    this.viewport = parameters.viewport;
    this.linkService = parameters.linkService;
    this.downloadManager = parameters.downloadManager;
    this.imageResourcesPath = parameters.imageResourcesPath;
    this.renderInteractiveForms = parameters.renderInteractiveForms;
    this.svgFactory = parameters.svgFactory;

    if (isRenderable) {
      this.container = this._createContainer(ignoreBorder);
    }
  }

  _createContainer(ignoreBorder = false) {
    const data = this.data,
          page = this.page,
          viewport = this.viewport;
    const container = document.createElement("section");
    let width = data.rect[2] - data.rect[0];
    let height = data.rect[3] - data.rect[1];
    container.setAttribute("data-annotation-id", data.id);

    const rect = _util.Util.normalizeRect([data.rect[0], page.view[3] - data.rect[1] + page.view[1], data.rect[2], page.view[3] - data.rect[3] + page.view[1]]);

    container.style.transform = `matrix(${viewport.transform.join(",")})`;
    container.style.transformOrigin = `-${rect[0]}px -${rect[1]}px`;

    if (!ignoreBorder && data.borderStyle.width > 0) {
      container.style.borderWidth = `${data.borderStyle.width}px`;

      if (data.borderStyle.style !== _util.AnnotationBorderStyleType.UNDERLINE) {
        width = width - 2 * data.borderStyle.width;
        height = height - 2 * data.borderStyle.width;
      }

      const horizontalRadius = data.borderStyle.horizontalCornerRadius;
      const verticalRadius = data.borderStyle.verticalCornerRadius;

      if (horizontalRadius > 0 || verticalRadius > 0) {
        const radius = `${horizontalRadius}px / ${verticalRadius}px`;
        container.style.borderRadius = radius;
      }

      switch (data.borderStyle.style) {
        case _util.AnnotationBorderStyleType.SOLID:
          container.style.borderStyle = "solid";
          break;

        case _util.AnnotationBorderStyleType.DASHED:
          container.style.borderStyle = "dashed";
          break;

        case _util.AnnotationBorderStyleType.BEVELED:
          (0, _util.warn)("Unimplemented border style: beveled");
          break;

        case _util.AnnotationBorderStyleType.INSET:
          (0, _util.warn)("Unimplemented border style: inset");
          break;

        case _util.AnnotationBorderStyleType.UNDERLINE:
          container.style.borderBottomStyle = "solid";
          break;

        default:
          break;
      }

      if (data.color) {
        container.style.borderColor = _util.Util.makeCssRgb(data.color[0] | 0, data.color[1] | 0, data.color[2] | 0);
      } else {
        container.style.borderWidth = 0;
      }
    }

    container.style.left = `${rect[0]}px`;
    container.style.top = `${rect[1]}px`;
    container.style.width = `${width}px`;
    container.style.height = `${height}px`;
    return container;
  }

  _createPopup(container, trigger, data) {
    if (!trigger) {
      trigger = document.createElement("div");
      trigger.style.height = container.style.height;
      trigger.style.width = container.style.width;
      container.appendChild(trigger);
    }

    const popupElement = new PopupElement({
      container,
      trigger,
      color: data.color,
      title: data.title,
      modificationDate: data.modificationDate,
      contents: data.contents,
      hideWrapper: true
    });
    const popup = popupElement.render();
    popup.style.left = container.style.width;
    container.appendChild(popup);
  }

  render() {
    (0, _util.unreachable)("Abstract method `AnnotationElement.render` called");
  }

}

class LinkAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.url || parameters.data.dest || parameters.data.action);
    super(parameters, isRenderable);
  }

  render() {
    this.container.className = "linkAnnotation";
    const {
      data,
      linkService
    } = this;
    const link = document.createElement("a");

    if (data.url) {
      (0, _display_utils.addLinkAttributes)(link, {
        url: data.url,
        target: data.newWindow ? _display_utils.LinkTarget.BLANK : linkService.externalLinkTarget,
        rel: linkService.externalLinkRel,
        enabled: linkService.externalLinkEnabled
      });
    } else if (data.action) {
      this._bindNamedAction(link, data.action);
    } else {
      this._bindLink(link, data.dest);
    }

    this.container.appendChild(link);
    return this.container;
  }

  _bindLink(link, destination) {
    link.href = this.linkService.getDestinationHash(destination);

    link.onclick = () => {
      if (destination) {
        this.linkService.navigateTo(destination);
      }

      return false;
    };

    if (destination) {
      link.className = "internalLink";
    }
  }

  _bindNamedAction(link, action) {
    link.href = this.linkService.getAnchorUrl("");

    link.onclick = () => {
      this.linkService.executeNamedAction(action);
      return false;
    };

    link.className = "internalLink";
  }

}

class TextAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable);
  }

  render() {
    this.container.className = "textAnnotation";
    const image = document.createElement("img");
    image.style.height = this.container.style.height;
    image.style.width = this.container.style.width;
    image.src = this.imageResourcesPath + "annotation-" + this.data.name.toLowerCase() + ".svg";
    image.alt = "[{{type}} Annotation]";
    image.dataset.l10nId = "text_annotation_type";
    image.dataset.l10nArgs = JSON.stringify({
      type: this.data.name
    });

    if (!this.data.hasPopup) {
      this._createPopup(this.container, image, this.data);
    }

    this.container.appendChild(image);
    return this.container;
  }

}

class WidgetAnnotationElement extends AnnotationElement {
  render() {
    return this.container;
  }

}

class TextWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    const isRenderable = parameters.renderInteractiveForms || !parameters.data.hasAppearance && !!parameters.data.fieldValue;
    super(parameters, isRenderable);
  }

  render() {
    const TEXT_ALIGNMENT = ["left", "center", "right"];
    this.container.className = "textWidgetAnnotation";
    let element = null;

    if (this.renderInteractiveForms) {
      if (this.data.multiLine) {
        element = document.createElement("textarea");
        element.textContent = this.data.fieldValue;
      } else {
        element = document.createElement("input");
        element.type = "text";
        element.setAttribute("value", this.data.fieldValue);
      }

      element.disabled = this.data.readOnly;

      if (this.data.maxLen !== null) {
        element.maxLength = this.data.maxLen;
      }

      if (this.data.comb) {
        const fieldWidth = this.data.rect[2] - this.data.rect[0];
        const combWidth = fieldWidth / this.data.maxLen;
        element.classList.add("comb");
        element.style.letterSpacing = `calc(${combWidth}px - 1ch)`;
      }
    } else {
      element = document.createElement("div");
      element.textContent = this.data.fieldValue;
      element.style.verticalAlign = "middle";
      element.style.display = "table-cell";
      let font = null;

      if (this.data.fontRefName && this.page.commonObjs.has(this.data.fontRefName)) {
        font = this.page.commonObjs.get(this.data.fontRefName);
      }

      this._setTextStyle(element, font);
    }

    if (this.data.textAlignment !== null) {
      element.style.textAlign = TEXT_ALIGNMENT[this.data.textAlignment];
    }

    this.container.appendChild(element);
    return this.container;
  }

  _setTextStyle(element, font) {
    const style = element.style;
    style.fontSize = `${this.data.fontSize}px`;
    style.direction = this.data.fontDirection < 0 ? "rtl" : "ltr";

    if (!font) {
      return;
    }

    let bold = "normal";

    if (font.black) {
      bold = "900";
    } else if (font.bold) {
      bold = "bold";
    }

    style.fontWeight = bold;
    style.fontStyle = font.italic ? "italic" : "normal";
    const fontFamily = font.loadedName ? `"${font.loadedName}", ` : "";
    const fallbackName = font.fallbackName || "Helvetica, sans-serif";
    style.fontFamily = fontFamily + fallbackName;
  }

}

class CheckboxWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }

  render() {
    this.container.className = "buttonWidgetAnnotation checkBox";
    const element = document.createElement("input");
    element.disabled = this.data.readOnly;
    element.type = "checkbox";

    if (this.data.fieldValue && this.data.fieldValue !== "Off") {
      element.setAttribute("checked", true);
    }

    this.container.appendChild(element);
    return this.container;
  }

}

class RadioButtonWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }

  render() {
    this.container.className = "buttonWidgetAnnotation radioButton";
    const element = document.createElement("input");
    element.disabled = this.data.readOnly;
    element.type = "radio";
    element.name = this.data.fieldName;

    if (this.data.fieldValue === this.data.buttonValue) {
      element.setAttribute("checked", true);
    }

    this.container.appendChild(element);
    return this.container;
  }

}

class PushButtonWidgetAnnotationElement extends LinkAnnotationElement {
  render() {
    const container = super.render();
    container.className = "buttonWidgetAnnotation pushButton";
    return container;
  }

}

class ChoiceWidgetAnnotationElement extends WidgetAnnotationElement {
  constructor(parameters) {
    super(parameters, parameters.renderInteractiveForms);
  }

  render() {
    this.container.className = "choiceWidgetAnnotation";
    const selectElement = document.createElement("select");
    selectElement.disabled = this.data.readOnly;

    if (!this.data.combo) {
      selectElement.size = this.data.options.length;

      if (this.data.multiSelect) {
        selectElement.multiple = true;
      }
    }

    for (const option of this.data.options) {
      const optionElement = document.createElement("option");
      optionElement.textContent = option.displayValue;
      optionElement.value = option.exportValue;

      if (this.data.fieldValue.includes(option.displayValue)) {
        optionElement.setAttribute("selected", true);
      }

      selectElement.appendChild(optionElement);
    }

    this.container.appendChild(selectElement);
    return this.container;
  }

}

class PopupAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable);
  }

  render() {
    const IGNORE_TYPES = ["Line", "Square", "Circle", "PolyLine", "Polygon", "Ink"];
    this.container.className = "popupAnnotation";

    if (IGNORE_TYPES.includes(this.data.parentType)) {
      return this.container;
    }

    const selector = `[data-annotation-id="${this.data.parentId}"]`;
    const parentElement = this.layer.querySelector(selector);

    if (!parentElement) {
      return this.container;
    }

    const popup = new PopupElement({
      container: this.container,
      trigger: parentElement,
      color: this.data.color,
      title: this.data.title,
      modificationDate: this.data.modificationDate,
      contents: this.data.contents
    });
    const parentLeft = parseFloat(parentElement.style.left);
    const parentWidth = parseFloat(parentElement.style.width);
    this.container.style.transformOrigin = `-${parentLeft + parentWidth}px -${parentElement.style.top}`;
    this.container.style.left = `${parentLeft + parentWidth}px`;
    this.container.appendChild(popup.render());
    return this.container;
  }

}

class PopupElement {
  constructor(parameters) {
    this.container = parameters.container;
    this.trigger = parameters.trigger;
    this.color = parameters.color;
    this.title = parameters.title;
    this.modificationDate = parameters.modificationDate;
    this.contents = parameters.contents;
    this.hideWrapper = parameters.hideWrapper || false;
    this.pinned = false;
  }

  render() {
    const BACKGROUND_ENLIGHT = 0.7;
    const wrapper = document.createElement("div");
    wrapper.className = "popupWrapper";
    this.hideElement = this.hideWrapper ? wrapper : this.container;
    this.hideElement.setAttribute("hidden", true);
    const popup = document.createElement("div");
    popup.className = "popup";
    const color = this.color;

    if (color) {
      const r = BACKGROUND_ENLIGHT * (255 - color[0]) + color[0];
      const g = BACKGROUND_ENLIGHT * (255 - color[1]) + color[1];
      const b = BACKGROUND_ENLIGHT * (255 - color[2]) + color[2];
      popup.style.backgroundColor = _util.Util.makeCssRgb(r | 0, g | 0, b | 0);
    }

    const title = document.createElement("h1");
    title.textContent = this.title;
    popup.appendChild(title);

    const dateObject = _display_utils.PDFDateString.toDateObject(this.modificationDate);

    if (dateObject) {
      const modificationDate = document.createElement("span");
      modificationDate.textContent = "{{date}}, {{time}}";
      modificationDate.dataset.l10nId = "annotation_date_string";
      modificationDate.dataset.l10nArgs = JSON.stringify({
        date: dateObject.toLocaleDateString(),
        time: dateObject.toLocaleTimeString()
      });
      popup.appendChild(modificationDate);
    }

    const contents = this._formatContents(this.contents);

    popup.appendChild(contents);
    this.trigger.addEventListener("click", this._toggle.bind(this));
    this.trigger.addEventListener("mouseover", this._show.bind(this, false));
    this.trigger.addEventListener("mouseout", this._hide.bind(this, false));
    popup.addEventListener("click", this._hide.bind(this, true));
    wrapper.appendChild(popup);
    return wrapper;
  }

  _formatContents(contents) {
    const p = document.createElement("p");
    const lines = contents.split(/(?:\r\n?|\n)/);

    for (let i = 0, ii = lines.length; i < ii; ++i) {
      const line = lines[i];
      p.appendChild(document.createTextNode(line));

      if (i < ii - 1) {
        p.appendChild(document.createElement("br"));
      }
    }

    return p;
  }

  _toggle() {
    if (this.pinned) {
      this._hide(true);
    } else {
      this._show(true);
    }
  }

  _show(pin = false) {
    if (pin) {
      this.pinned = true;
    }

    if (this.hideElement.hasAttribute("hidden")) {
      this.hideElement.removeAttribute("hidden");
      this.container.style.zIndex += 1;
    }
  }

  _hide(unpin = true) {
    if (unpin) {
      this.pinned = false;
    }

    if (!this.hideElement.hasAttribute("hidden") && !this.pinned) {
      this.hideElement.setAttribute("hidden", true);
      this.container.style.zIndex -= 1;
    }
  }

}

class FreeTextAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "freeTextAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class LineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "lineAnnotation";
    const data = this.data;
    const width = data.rect[2] - data.rect[0];
    const height = data.rect[3] - data.rect[1];
    const svg = this.svgFactory.create(width, height);
    const line = this.svgFactory.createElement("svg:line");
    line.setAttribute("x1", data.rect[2] - data.lineCoordinates[0]);
    line.setAttribute("y1", data.rect[3] - data.lineCoordinates[1]);
    line.setAttribute("x2", data.rect[2] - data.lineCoordinates[2]);
    line.setAttribute("y2", data.rect[3] - data.lineCoordinates[3]);
    line.setAttribute("stroke-width", data.borderStyle.width || 1);
    line.setAttribute("stroke", "transparent");
    svg.appendChild(line);
    this.container.append(svg);

    this._createPopup(this.container, line, data);

    return this.container;
  }

}

class SquareAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "squareAnnotation";
    const data = this.data;
    const width = data.rect[2] - data.rect[0];
    const height = data.rect[3] - data.rect[1];
    const svg = this.svgFactory.create(width, height);
    const borderWidth = data.borderStyle.width;
    const square = this.svgFactory.createElement("svg:rect");
    square.setAttribute("x", borderWidth / 2);
    square.setAttribute("y", borderWidth / 2);
    square.setAttribute("width", width - borderWidth);
    square.setAttribute("height", height - borderWidth);
    square.setAttribute("stroke-width", borderWidth || 1);
    square.setAttribute("stroke", "transparent");
    square.setAttribute("fill", "none");
    svg.appendChild(square);
    this.container.append(svg);

    this._createPopup(this.container, square, data);

    return this.container;
  }

}

class CircleAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "circleAnnotation";
    const data = this.data;
    const width = data.rect[2] - data.rect[0];
    const height = data.rect[3] - data.rect[1];
    const svg = this.svgFactory.create(width, height);
    const borderWidth = data.borderStyle.width;
    const circle = this.svgFactory.createElement("svg:ellipse");
    circle.setAttribute("cx", width / 2);
    circle.setAttribute("cy", height / 2);
    circle.setAttribute("rx", width / 2 - borderWidth / 2);
    circle.setAttribute("ry", height / 2 - borderWidth / 2);
    circle.setAttribute("stroke-width", borderWidth || 1);
    circle.setAttribute("stroke", "transparent");
    circle.setAttribute("fill", "none");
    svg.appendChild(circle);
    this.container.append(svg);

    this._createPopup(this.container, circle, data);

    return this.container;
  }

}

class PolylineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
    this.containerClassName = "polylineAnnotation";
    this.svgElementName = "svg:polyline";
  }

  render() {
    this.container.className = this.containerClassName;
    const data = this.data;
    const width = data.rect[2] - data.rect[0];
    const height = data.rect[3] - data.rect[1];
    const svg = this.svgFactory.create(width, height);
    let points = [];

    for (const coordinate of data.vertices) {
      const x = coordinate.x - data.rect[0];
      const y = data.rect[3] - coordinate.y;
      points.push(x + "," + y);
    }

    points = points.join(" ");
    const polyline = this.svgFactory.createElement(this.svgElementName);
    polyline.setAttribute("points", points);
    polyline.setAttribute("stroke-width", data.borderStyle.width || 1);
    polyline.setAttribute("stroke", "transparent");
    polyline.setAttribute("fill", "none");
    svg.appendChild(polyline);
    this.container.append(svg);

    this._createPopup(this.container, polyline, data);

    return this.container;
  }

}

class PolygonAnnotationElement extends PolylineAnnotationElement {
  constructor(parameters) {
    super(parameters);
    this.containerClassName = "polygonAnnotation";
    this.svgElementName = "svg:polygon";
  }

}

class CaretAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "caretAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class InkAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
    this.containerClassName = "inkAnnotation";
    this.svgElementName = "svg:polyline";
  }

  render() {
    this.container.className = this.containerClassName;
    const data = this.data;
    const width = data.rect[2] - data.rect[0];
    const height = data.rect[3] - data.rect[1];
    const svg = this.svgFactory.create(width, height);

    for (const inkList of data.inkLists) {
      let points = [];

      for (const coordinate of inkList) {
        const x = coordinate.x - data.rect[0];
        const y = data.rect[3] - coordinate.y;
        points.push(`${x},${y}`);
      }

      points = points.join(" ");
      const polyline = this.svgFactory.createElement(this.svgElementName);
      polyline.setAttribute("points", points);
      polyline.setAttribute("stroke-width", data.borderStyle.width || 1);
      polyline.setAttribute("stroke", "transparent");
      polyline.setAttribute("fill", "none");

      this._createPopup(this.container, polyline, data);

      svg.appendChild(polyline);
    }

    this.container.append(svg);
    return this.container;
  }

}

class HighlightAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "highlightAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class UnderlineAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "underlineAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class SquigglyAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "squigglyAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class StrikeOutAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "strikeoutAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class StampAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    const isRenderable = !!(parameters.data.hasPopup || parameters.data.title || parameters.data.contents);
    super(parameters, isRenderable, true);
  }

  render() {
    this.container.className = "stampAnnotation";

    if (!this.data.hasPopup) {
      this._createPopup(this.container, null, this.data);
    }

    return this.container;
  }

}

class FileAttachmentAnnotationElement extends AnnotationElement {
  constructor(parameters) {
    super(parameters, true);
    const {
      filename,
      content
    } = this.data.file;
    this.filename = (0, _display_utils.getFilenameFromUrl)(filename);
    this.content = content;

    if (this.linkService.eventBus) {
      this.linkService.eventBus.dispatch("fileattachmentannotation", {
        source: this,
        id: (0, _util.stringToPDFString)(filename),
        filename,
        content
      });
    }
  }

  render() {
    this.container.className = "fileAttachmentAnnotation";
    const trigger = document.createElement("div");
    trigger.style.height = this.container.style.height;
    trigger.style.width = this.container.style.width;
    trigger.addEventListener("dblclick", this._download.bind(this));

    if (!this.data.hasPopup && (this.data.title || this.data.contents)) {
      this._createPopup(this.container, trigger, this.data);
    }

    this.container.appendChild(trigger);
    return this.container;
  }

  _download() {
    if (!this.downloadManager) {
      (0, _util.warn)("Download cannot be started due to unavailable download manager");
      return;
    }

    this.downloadManager.downloadData(this.content, this.filename, "");
  }

}

class AnnotationLayer {
  static render(parameters) {
    const sortedAnnotations = [],
          popupAnnotations = [];

    for (const data of parameters.annotations) {
      if (!data) {
        continue;
      }

      if (data.annotationType === _util.AnnotationType.POPUP) {
        popupAnnotations.push(data);
        continue;
      }

      sortedAnnotations.push(data);
    }

    if (popupAnnotations.length) {
      sortedAnnotations.push(...popupAnnotations);
    }

    for (const data of sortedAnnotations) {
      const element = AnnotationElementFactory.create({
        data,
        layer: parameters.div,
        page: parameters.page,
        viewport: parameters.viewport,
        linkService: parameters.linkService,
        downloadManager: parameters.downloadManager,
        imageResourcesPath: parameters.imageResourcesPath || "",
        renderInteractiveForms: parameters.renderInteractiveForms || false,
        svgFactory: new _display_utils.DOMSVGFactory()
      });

      if (element.isRenderable) {
        parameters.div.appendChild(element.render());
      }
    }
  }

  static update(parameters) {
    for (const data of parameters.annotations) {
      const element = parameters.div.querySelector(`[data-annotation-id="${data.id}"]`);

      if (element) {
        element.style.transform = `matrix(${parameters.viewport.transform.join(",")})`;
      }
    }

    parameters.div.removeAttribute("hidden");
  }

}

exports.AnnotationLayer = AnnotationLayer;