mirador/dist/es/src/components/GalleryViewThumbnail.js

An open-source, web-based 'multi-up' viewer that supports zoom-pan-rotate functionality, ability to display/compare simple images, and images with annotations.

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (typeof call === "object" || typeof call === "function")) { return call; } else if (call !== void 0) { throw new TypeError("Derived constructors may only return object or undefined"); } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

import React, { Component } from 'react';
import Avatar from '@material-ui/core/Avatar';
import Chip from '@material-ui/core/Chip';
import AnnotationIcon from '@material-ui/icons/CommentSharp';
import SearchIcon from '@material-ui/icons/SearchSharp';
import classNames from 'classnames';
import 'intersection-observer'; // polyfill needed for Safari

import IntersectionObserver from '@researchgate/react-intersection-observer';
import MiradorCanvas from '../lib/MiradorCanvas';
import IIIFThumbnail from '../containers/IIIFThumbnail';
/**
 * Represents a WindowViewer in the mirador workspace. Responsible for mounting
 * OSD and Navigation
 */

export var GalleryViewThumbnail = /*#__PURE__*/function (_Component) {
  _inherits(GalleryViewThumbnail, _Component);

  var _super = _createSuper(GalleryViewThumbnail);

  /** */
  function GalleryViewThumbnail(props) {
    var _this;

    _classCallCheck(this, GalleryViewThumbnail);

    _this = _super.call(this, props);
    _this.state = {
      requestedAnnotations: false
    };
    _this.handleSelect = _this.handleSelect.bind(_assertThisInitialized(_this));
    _this.handleKey = _this.handleKey.bind(_assertThisInitialized(_this));
    _this.handleIntersection = _this.handleIntersection.bind(_assertThisInitialized(_this));
    return _this;
  }
  /** @private */


  _createClass(GalleryViewThumbnail, [{
    key: "handleSelect",
    value: function handleSelect() {
      var _this$props = this.props,
          canvas = _this$props.canvas,
          selected = _this$props.selected,
          setCanvas = _this$props.setCanvas,
          focusOnCanvas = _this$props.focusOnCanvas;

      if (selected) {
        focusOnCanvas();
      } else {
        setCanvas(canvas.id);
      }
    }
    /** @private */

  }, {
    key: "handleKey",
    value: function handleKey(event) {
      var _this$props2 = this.props,
          canvas = _this$props2.canvas,
          setCanvas = _this$props2.setCanvas,
          focusOnCanvas = _this$props2.focusOnCanvas;
      this.keys = {
        enter: 'Enter',
        space: ' '
      };
      this.chars = {
        enter: 13,
        space: 32
      };
      var enterOrSpace = event.key === this.keys.enter || event.which === this.chars.enter || event.key === this.keys.space || event.which === this.chars.space;

      if (enterOrSpace) {
        focusOnCanvas();
      } else {
        setCanvas(canvas.id);
      }
    }
    /** */

  }, {
    key: "handleIntersection",
    value: function handleIntersection(_ref) {
      var isIntersecting = _ref.isIntersecting;
      var _this$props3 = this.props,
          annotationsCount = _this$props3.annotationsCount,
          requestCanvasAnnotations = _this$props3.requestCanvasAnnotations;
      var requestedAnnotations = this.state.requestedAnnotations;
      if (!isIntersecting || annotationsCount === undefined || annotationsCount > 0 || requestedAnnotations) return;
      this.setState({
        requestedAnnotations: true
      });
      requestCanvasAnnotations();
    }
    /**
     * Renders things
     */

  }, {
    key: "render",
    value: function render() {
      var _this$props4 = this.props,
          annotationsCount = _this$props4.annotationsCount,
          searchAnnotationsCount = _this$props4.searchAnnotationsCount,
          canvas = _this$props4.canvas,
          classes = _this$props4.classes,
          config = _this$props4.config,
          selected = _this$props4.selected;
      var miradorCanvas = new MiradorCanvas(canvas);
      return /*#__PURE__*/React.createElement(IntersectionObserver, {
        onChange: this.handleIntersection
      }, /*#__PURE__*/React.createElement("div", {
        key: canvas.index,
        className: classNames(classes.galleryViewItem, selected ? classes.selected : '', searchAnnotationsCount > 0 ? classes.hasAnnotations : ''),
        onClick: this.handleSelect,
        onKeyUp: this.handleKey,
        role: "button",
        tabIndex: 0
      }, /*#__PURE__*/React.createElement(IIIFThumbnail, {
        resource: canvas,
        labelled: true,
        variant: "outside",
        maxWidth: config.width,
        maxHeight: config.height,
        style: {
          margin: '0 auto',
          maxWidth: "".concat(Math.ceil(config.height * miradorCanvas.aspectRatio), "px")
        }
      }, /*#__PURE__*/React.createElement("div", {
        className: classes.chips
      }, searchAnnotationsCount > 0 && /*#__PURE__*/React.createElement(Chip, {
        avatar: /*#__PURE__*/React.createElement(Avatar, {
          className: classes.avatar,
          classes: {
            circle: classes.avatarIcon
          }
        }, /*#__PURE__*/React.createElement(SearchIcon, {
          fontSize: "small"
        })),
        label: searchAnnotationsCount,
        className: classNames(classes.searchChip),
        size: "small"
      }), (annotationsCount || 0) > 0 && /*#__PURE__*/React.createElement(Chip, {
        avatar: /*#__PURE__*/React.createElement(Avatar, {
          className: classes.avatar,
          classes: {
            circle: classes.avatarIcon
          }
        }, /*#__PURE__*/React.createElement(AnnotationIcon, {
          className: classes.annotationIcon
        })),
        label: annotationsCount,
        className: classNames(classes.annotationsChip),
        size: "small"
      })))));
    }
  }]);

  return GalleryViewThumbnail;
}(Component);
GalleryViewThumbnail.defaultProps = {
  annotationsCount: undefined,
  config: {
    height: 100,
    width: null
  },
  requestCanvasAnnotations: function requestCanvasAnnotations() {},
  searchAnnotationsCount: 0,
  selected: false
};