text: /* 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.
   */
  (function (root, factory) {
   'use strict';
   if (typeof define === 'function' && define.amd) {
    define('pdfjs-dist/web/pdf_viewer', [
     'exports',
     'pdfjs-dist/build/pdf'
    ], factory);
   } else if (typeof exports !== 'undefined') {
    factory(exports, require('../build/pdf.js'));
   } else {
    factory(root.pdfjsDistWebPDFViewer = {}, root.pdfjsDistBuildPdf);
   }
  }(this, function (exports, pdfjsLib) {
   'use strict';
   var pdfViewerLibs = { pdfjsWebPDFJS: pdfjsLib };
   (function () {
    (function (root, factory) {
     factory(root.pdfjsWebPDFRenderingQueue = {});
    }(this, function (exports) {
     var CLEANUP_TIMEOUT = 30000;
     var RenderingStates = {
      INITIAL: 0,
      RUNNING: 1,
      PAUSED: 2,
      FINISHED: 3
     };
     var PDFRenderingQueue = function PDFRenderingQueueClosure() {
      function PDFRenderingQueue() {
       this.pdfViewer = null;
       this.pdfThumbnailViewer = null;
       this.onIdle = null;
       this.highestPriorityPage = null;
       this.idleTimeout = null;
       this.printing = false;
       this.isThumbnailViewEnabled = false;
      }
      PDFRenderingQueue.prototype = {
       setViewer: function PDFRenderingQueue_setViewer(pdfViewer) {
        this.pdfViewer = pdfViewer;
       },
       setThumbnailViewer: function PDFRenderingQueue_setThumbnailViewer(pdfThumbnailViewer) {
        this.pdfThumbnailViewer = pdfThumbnailViewer;
       },
       isHighestPriority: function PDFRenderingQueue_isHighestPriority(view) {
        return this.highestPriorityPage === view.renderingId;
       },
       renderHighestPriority: function PDFRenderingQueue_renderHighestPriority(currentlyVisiblePages) {
        if (this.idleTimeout) {
         clearTimeout(this.idleTimeout);
         this.idleTimeout = null;
        }
        if (this.pdfViewer.forceRendering(currentlyVisiblePages)) {
         return;
        }
        if (this.pdfThumbnailViewer && this.isThumbnailViewEnabled) {
         if (this.pdfThumbnailViewer.forceRendering()) {
          return;
         }
        }
        if (this.printing) {
         return;
        }
        if (this.onIdle) {
         this.idleTimeout = setTimeout(this.onIdle.bind(this), CLEANUP_TIMEOUT);
        }
       },
       getHighestPriority: function PDFRenderingQueue_getHighestPriority(visible, views, scrolledDown) {
        var visibleViews = visible.views;
        var numVisible = visibleViews.length;
        if (numVisible === 0) {
         return false;
        }
        for (var i = 0; i < numVisible; ++i) {
         var view = visibleViews[i].view;
         if (!this.isViewFinished(view)) {
          return view;
         }
        }
        if (scrolledDown) {
         var nextPageIndex = visible.last.id;
         if (views[nextPageIndex] && !this.isViewFinished(views[nextPageIndex])) {
          return views[nextPageIndex];
         }
        } else {
         var previousPageIndex = visible.first.id - 2;
         if (views[previousPageIndex] && !this.isViewFinished(views[previousPageIndex])) {
          return views[previousPageIndex];
         }
        }
        return null;
       },
       isViewFinished: function PDFRenderingQueue_isViewFinished(view) {
        return view.renderingState === RenderingStates.FINISHED;
       },
       renderView: function PDFRenderingQueue_renderView(view) {
        var state = view.renderingState;
        switch (state) {
        case RenderingStates.FINISHED:
         return false;
        case RenderingStates.PAUSED:
         this.highestPriorityPage = view.renderingId;
         view.resume();
         break;
        case RenderingStates.RUNNING:
         this.highestPriorityPage = view.renderingId;
         break;
        case RenderingStates.INITIAL:
         this.highestPriorityPage = view.renderingId;
         var continueRendering = function () {
          this.renderHighestPriority();
         }.bind(this);
         view.draw().then(continueRendering, continueRendering);
         break;
        }
        return true;
       }
      };
      return PDFRenderingQueue;
     }();
     exports.RenderingStates = RenderingStates;
     exports.PDFRenderingQueue = PDFRenderingQueue;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebDownloadManager = {}, root.pdfjsWebPDFJS);
    }(this, function (exports, pdfjsLib) {
     function download(blobUrl, filename) {
      var a = document.createElement('a');
      if (a.click) {
       a.href = blobUrl;
       a.target = '_parent';
       if ('download' in a) {
        a.download = filename;
       }
       (document.body || document.documentElement).appendChild(a);
       a.click();
       a.parentNode.removeChild(a);
      } else {
       if (window.top === window && blobUrl.split('#')[0] === window.location.href.split('#')[0]) {
        var padCharacter = blobUrl.indexOf('?') === -1 ? '?' : '&';
        blobUrl = blobUrl.replace(/#|$/, padCharacter + '$&');
       }
       window.open(blobUrl, '_parent');
      }
     }
     function DownloadManager() {
     }
     DownloadManager.prototype = {
      downloadUrl: function DownloadManager_downloadUrl(url, filename) {
       if (!pdfjsLib.createValidAbsoluteUrl(url, 'http://example.com')) {
        return;
       }
       download(url + '#pdfjs.action=download', filename);
      },
      downloadData: function DownloadManager_downloadData(data, filename, contentType) {
       if (navigator.msSaveBlob) {
        return navigator.msSaveBlob(new Blob([data], { type: contentType }), filename);
       }
       var blobUrl = pdfjsLib.createObjectURL(data, contentType, pdfjsLib.PDFJS.disableCreateObjectURL);
       download(blobUrl, filename);
      },
      download: function DownloadManager_download(blob, url, filename) {
       if (!URL) {
        this.downloadUrl(url, filename);
        return;
       }
       if (navigator.msSaveBlob) {
        if (!navigator.msSaveBlob(blob, filename)) {
         this.downloadUrl(url, filename);
        }
        return;
       }
       var blobUrl = URL.createObjectURL(blob);
       download(blobUrl, filename);
      }
     };
     exports.DownloadManager = DownloadManager;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebUIUtils = {}, root.pdfjsWebPDFJS);
    }(this, function (exports, pdfjsLib) {
     var CSS_UNITS = 96.0 / 72.0;
     var DEFAULT_SCALE_VALUE = 'auto';
     var DEFAULT_SCALE = 1.0;
     var UNKNOWN_SCALE = 0;
     var MAX_AUTO_SCALE = 1.25;
     var SCROLLBAR_PADDING = 40;
     var VERTICAL_PADDING = 5;
     var mozL10n = document.mozL10n || document.webL10n;
     var PDFJS = pdfjsLib.PDFJS;
     PDFJS.disableFullscreen = PDFJS.disableFullscreen === undefined ? false : PDFJS.disableFullscreen;
     PDFJS.useOnlyCssZoom = PDFJS.useOnlyCssZoom === undefined ? false : PDFJS.useOnlyCssZoom;
     PDFJS.maxCanvasPixels = PDFJS.maxCanvasPixels === undefined ? 16777216 : PDFJS.maxCanvasPixels;
     PDFJS.disableHistory = PDFJS.disableHistory === undefined ? false : PDFJS.disableHistory;
     PDFJS.disableTextLayer = PDFJS.disableTextLayer === undefined ? false : PDFJS.disableTextLayer;
     PDFJS.ignoreCurrentPositionOnZoom = PDFJS.ignoreCurrentPositionOnZoom === undefined ? false : PDFJS.ignoreCurrentPositionOnZoom;
     PDFJS.locale = PDFJS.locale === undefined ? navigator.language : PDFJS.locale;
     function getOutputScale(ctx) {
      var devicePixelRatio = window.devicePixelRatio || 1;
      var backingStoreRatio = ctx.webkitBackingStorePixelRatio || ctx.mozBackingStorePixelRatio || ctx.msBackingStorePixelRatio || ctx.oBackingStorePixelRatio || ctx.backingStorePixelRatio || 1;
      var pixelRatio = devicePixelRatio / backingStoreRatio;
      return {
       sx: pixelRatio,
       sy: pixelRatio,
       scaled: pixelRatio !== 1
      };
     }
     function scrollIntoView(element, spot, skipOverflowHiddenElements) {
      var parent = element.offsetParent;
      if (!parent) {
       console.error('offsetParent is not set -- cannot scroll');
       return;
      }
      var checkOverflow = skipOverflowHiddenElements || false;
      var offsetY = element.offsetTop + element.clientTop;
      var offsetX = element.offsetLeft + element.clientLeft;
      while (parent.clientHeight === parent.scrollHeight || checkOverflow && getComputedStyle(parent).overflow === 'hidden') {
       if (parent.dataset._scaleY) {
        offsetY /= parent.dataset._scaleY;
        offsetX /= parent.dataset._scaleX;
       }
       offsetY += parent.offsetTop;
       offsetX += parent.offsetLeft;
       parent = parent.offsetParent;
       if (!parent) {
        return;
       }
      }
      if (spot) {
       if (spot.top !== undefined) {
        offsetY += spot.top;
       }
       if (spot.left !== undefined) {
        offsetX += spot.left;
        parent.scrollLeft = offsetX;
       }
      }
      parent.scrollTop = offsetY;
     }
     function watchScroll(viewAreaElement, callback) {
      var debounceScroll = function debounceScroll(evt) {
       if (rAF) {
        return;
       }
       rAF = window.requestAnimationFrame(function viewAreaElementScrolled() {
        rAF = null;
        var currentY = viewAreaElement.scrollTop;
        var lastY = state.lastY;
        if (currentY !== lastY) {
         state.down = currentY > lastY;
        }
        state.lastY = currentY;
        callback(state);
       });
      };
      var state = {
       down: true,
       lastY: viewAreaElement.scrollTop,
       _eventHandler: debounceScroll
      };
      var rAF = null;
      viewAreaElement.addEventListener('scroll', debounceScroll, true);
      return state;
     }
     function parseQueryString(query) {
      var parts = query.split('&');
      var params = {};
      for (var i = 0, ii = parts.length; i < ii; ++i) {
       var param = parts[i].split('=');
       var key = param[0].toLowerCase();
       var value = param.length > 1 ? param[1] : null;
       params[decodeURIComponent(key)] = decodeURIComponent(value);
      }
      return params;
     }
     function binarySearchFirstItem(items, condition) {
      var minIndex = 0;
      var maxIndex = items.length - 1;
      if (items.length === 0 || !condition(items[maxIndex])) {
       return items.length;
      }
      if (condition(items[minIndex])) {
       return minIndex;
      }
      while (minIndex < maxIndex) {
       var currentIndex = minIndex + maxIndex >> 1;
       var currentItem = items[currentIndex];
       if (condition(currentItem)) {
        maxIndex = currentIndex;
       } else {
        minIndex = currentIndex + 1;
       }
      }
      return minIndex;
     }
     function approximateFraction(x) {
      if (Math.floor(x) === x) {
       return [
        x,
        1
       ];
      }
      var xinv = 1 / x;
      var limit = 8;
      if (xinv > limit) {
       return [
        1,
        limit
       ];
      } else if (Math.floor(xinv) === xinv) {
       return [
        1,
        xinv
       ];
      }
      var x_ = x > 1 ? xinv : x;
      var a = 0, b = 1, c = 1, d = 1;
      while (true) {
       var p = a + c, q = b + d;
       if (q > limit) {
        break;
       }
       if (x_ <= p / q) {
        c = p;
        d = q;
       } else {
        a = p;
        b = q;
       }
      }
      if (x_ - a / b < c / d - x_) {
       return x_ === x ? [
        a,
        b
       ] : [
        b,
        a
       ];
      } else {
       return x_ === x ? [
        c,
        d
       ] : [
        d,
        c
       ];
      }
     }
     function roundToDivide(x, div) {
      var r = x % div;
      return r === 0 ? x : Math.round(x - r + div);
     }
     function getVisibleElements(scrollEl, views, sortByVisibility) {
      var top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight;
      var left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth;
      function isElementBottomBelowViewTop(view) {
       var element = view.div;
       var elementBottom = element.offsetTop + element.clientTop + element.clientHeight;
       return elementBottom > top;
      }
      var visible = [], view, element;
      var currentHeight, viewHeight, hiddenHeight, percentHeight;
      var currentWidth, viewWidth;
      var firstVisibleElementInd = views.length === 0 ? 0 : binarySearchFirstItem(views, isElementBottomBelowViewTop);
      for (var i = firstVisibleElementInd, ii = views.length; i < ii; i++) {
       view = views[i];
       element = view.div;
       currentHeight = element.offsetTop + element.clientTop;
       viewHeight = element.clientHeight;
       if (currentHeight > bottom) {
        break;
       }
       currentWidth = element.offsetLeft + element.clientLeft;
       viewWidth = element.clientWidth;
       if (currentWidth + viewWidth < left || currentWidth > right) {
        continue;
       }
       hiddenHeight = Math.max(0, top - currentHeight) + Math.max(0, currentHeight + viewHeight - bottom);
       percentHeight = (viewHeight - hiddenHeight) * 100 / viewHeight | 0;
       visible.push({
        id: view.id,
        x: currentWidth,
        y: currentHeight,
        view: view,
        percent: percentHeight
       });
      }
      var first = visible[0];
      var last = visible[visible.length - 1];
      if (sortByVisibility) {
       visible.sort(function (a, b) {
        var pc = a.percent - b.percent;
        if (Math.abs(pc) > 0.001) {
         return -pc;
        }
        return a.id - b.id;
       });
      }
      return {
       first: first,
       last: last,
       views: visible
      };
     }
     function noContextMenuHandler(e) {
      e.preventDefault();
     }
     function getPDFFileNameFromURL(url) {
      var reURI = /^(?:([^:]+:)?\/\/[^\/]+)?([^?#]*)(\?[^#]*)?(#.*)?$/;
      var reFilename = /[^\/?#=]+\.pdf\b(?!.*\.pdf\b)/i;
      var splitURI = reURI.exec(url);
      var suggestedFilename = reFilename.exec(splitURI[1]) || reFilename.exec(splitURI[2]) || reFilename.exec(splitURI[3]);
      if (suggestedFilename) {
       suggestedFilename = suggestedFilename[0];
       if (suggestedFilename.indexOf('%') !== -1) {
        try {
         suggestedFilename = reFilename.exec(decodeURIComponent(suggestedFilename))[0];
        } catch (e) {
        }
       }
      }
      return suggestedFilename || 'document.pdf';
     }
     function normalizeWheelEventDelta(evt) {
      var delta = Math.sqrt(evt.deltaX * evt.deltaX + evt.deltaY * evt.deltaY);
      var angle = Math.atan2(evt.deltaY, evt.deltaX);
      if (-0.25 * Math.PI < angle && angle < 0.75 * Math.PI) {
       delta = -delta;
      }
      var MOUSE_DOM_DELTA_PIXEL_MODE = 0;
      var MOUSE_DOM_DELTA_LINE_MODE = 1;
      var MOUSE_PIXELS_PER_LINE = 30;
      var MOUSE_LINES_PER_PAGE = 30;
      if (evt.deltaMode === MOUSE_DOM_DELTA_PIXEL_MODE) {
       delta /= MOUSE_PIXELS_PER_LINE * MOUSE_LINES_PER_PAGE;
      } else if (evt.deltaMode === MOUSE_DOM_DELTA_LINE_MODE) {
       delta /= MOUSE_LINES_PER_PAGE;
      }
      return delta;
     }
     var EventBus = function EventBusClosure() {
      function EventBus() {
       this._listeners = Object.create(null);
      }
      EventBus.prototype = {
       on: function EventBus_on(eventName, listener) {
        var eventListeners = this._listeners[eventName];
        if (!eventListeners) {
         eventListeners = [];
         this._listeners[eventName] = eventListeners;
        }
        eventListeners.push(listener);
       },
       off: function EventBus_on(eventName, listener) {
        var eventListeners = this._listeners[eventName];
        var i;
        if (!eventListeners || (i = eventListeners.indexOf(listener)) < 0) {
         return;
        }
        eventListeners.splice(i, 1);
       },
       dispatch: function EventBus_dispath(eventName) {
        var eventListeners = this._listeners[eventName];
        if (!eventListeners || eventListeners.length === 0) {
         return;
        }
        var args = Array.prototype.slice.call(arguments, 1);
        eventListeners.slice(0).forEach(function (listener) {
         listener.apply(null, args);
        });
       }
      };
      return EventBus;
     }();
     var ProgressBar = function ProgressBarClosure() {
      function clamp(v, min, max) {
       return Math.min(Math.max(v, min), max);
      }
      function ProgressBar(id, opts) {
       this.visible = true;
       this.div = document.querySelector(id + ' .progress');
       this.bar = this.div.parentNode;
       this.height = opts.height || 100;
       this.width = opts.width || 100;
       this.units = opts.units || '%';
       this.div.style.height = this.height + this.units;
       this.percent = 0;
      }
      ProgressBar.prototype = {
       updateBar: function ProgressBar_updateBar() {
        if (this._indeterminate) {
         this.div.classList.add('indeterminate');
         this.div.style.width = this.width + this.units;
         return;
        }
        this.div.classList.remove('indeterminate');
        var progressSize = this.width * this._percent / 100;
        this.div.style.width = progressSize + this.units;
       },
       get percent() {
        return this._percent;
       },
       set percent(val) {
        this._indeterminate = isNaN(val);
        this._percent = clamp(val, 0, 100);
        this.updateBar();
       },
       setWidth: function ProgressBar_setWidth(viewer) {
        if (viewer) {
         var container = viewer.parentNode;
         var scrollbarWidth = container.offsetWidth - viewer.offsetWidth;
         if (scrollbarWidth > 0) {
          this.bar.setAttribute('style', 'width: calc(100% - ' + scrollbarWidth + 'px);');
         }
        }
       },
       hide: function ProgressBar_hide() {
        if (!this.visible) {
         return;
        }
        this.visible = false;
        this.bar.classList.add('hidden');
        document.body.classList.remove('loadingInProgress');
       },
       show: function ProgressBar_show() {
        if (this.visible) {
         return;
        }
        this.visible = true;
        document.body.classList.add('loadingInProgress');
        this.bar.classList.remove('hidden');
       }
      };
      return ProgressBar;
     }();
     exports.CSS_UNITS = CSS_UNITS;
     exports.DEFAULT_SCALE_VALUE = DEFAULT_SCALE_VALUE;
     exports.DEFAULT_SCALE = DEFAULT_SCALE;
     exports.UNKNOWN_SCALE = UNKNOWN_SCALE;
     exports.MAX_AUTO_SCALE = MAX_AUTO_SCALE;
     exports.SCROLLBAR_PADDING = SCROLLBAR_PADDING;
     exports.VERTICAL_PADDING = VERTICAL_PADDING;
     exports.mozL10n = mozL10n;
     exports.EventBus = EventBus;
     exports.ProgressBar = ProgressBar;
     exports.getPDFFileNameFromURL = getPDFFileNameFromURL;
     exports.noContextMenuHandler = noContextMenuHandler;
     exports.parseQueryString = parseQueryString;
     exports.getVisibleElements = getVisibleElements;
     exports.roundToDivide = roundToDivide;
     exports.approximateFraction = approximateFraction;
     exports.getOutputScale = getOutputScale;
     exports.scrollIntoView = scrollIntoView;
     exports.watchScroll = watchScroll;
     exports.binarySearchFirstItem = binarySearchFirstItem;
     exports.normalizeWheelEventDelta = normalizeWheelEventDelta;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebDOMEvents = {}, root.pdfjsWebUIUtils);
    }(this, function (exports, uiUtils) {
     var EventBus = uiUtils.EventBus;
     function attachDOMEventsToEventBus(eventBus) {
      eventBus.on('documentload', function () {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('documentload', true, true, {});
       window.dispatchEvent(event);
      });
      eventBus.on('pagerendered', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('pagerendered', true, true, {
        pageNumber: e.pageNumber,
        cssTransform: e.cssTransform
       });
       e.source.div.dispatchEvent(event);
      });
      eventBus.on('textlayerrendered', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('textlayerrendered', true, true, { pageNumber: e.pageNumber });
       e.source.textLayerDiv.dispatchEvent(event);
      });
      eventBus.on('pagechange', function (e) {
       var event = document.createEvent('UIEvents');
       event.initUIEvent('pagechange', true, true, window, 0);
       event.pageNumber = e.pageNumber;
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('pagesinit', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('pagesinit', true, true, null);
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('pagesloaded', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('pagesloaded', true, true, { pagesCount: e.pagesCount });
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('scalechange', function (e) {
       var event = document.createEvent('UIEvents');
       event.initUIEvent('scalechange', true, true, window, 0);
       event.scale = e.scale;
       event.presetValue = e.presetValue;
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('updateviewarea', function (e) {
       var event = document.createEvent('UIEvents');
       event.initUIEvent('updateviewarea', true, true, window, 0);
       event.location = e.location;
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('find', function (e) {
       if (e.source === window) {
        return;
       }
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('find' + e.type, true, true, {
        query: e.query,
        phraseSearch: e.phraseSearch,
        caseSensitive: e.caseSensitive,
        highlightAll: e.highlightAll,
        findPrevious: e.findPrevious
       });
       window.dispatchEvent(event);
      });
      eventBus.on('attachmentsloaded', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('attachmentsloaded', true, true, { attachmentsCount: e.attachmentsCount });
       e.source.container.dispatchEvent(event);
      });
      eventBus.on('sidebarviewchanged', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('sidebarviewchanged', true, true, { view: e.view });
       e.source.outerContainer.dispatchEvent(event);
      });
      eventBus.on('pagemode', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('pagemode', true, true, { mode: e.mode });
       e.source.pdfViewer.container.dispatchEvent(event);
      });
      eventBus.on('namedaction', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('namedaction', true, true, { action: e.action });
       e.source.pdfViewer.container.dispatchEvent(event);
      });
      eventBus.on('presentationmodechanged', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('presentationmodechanged', true, true, {
        active: e.active,
        switchInProgress: e.switchInProgress
       });
       window.dispatchEvent(event);
      });
      eventBus.on('outlineloaded', function (e) {
       var event = document.createEvent('CustomEvent');
       event.initCustomEvent('outlineloaded', true, true, { outlineCount: e.outlineCount });
       e.source.container.dispatchEvent(event);
      });
     }
     var globalEventBus = null;
     function getGlobalEventBus() {
      if (globalEventBus) {
       return globalEventBus;
      }
      globalEventBus = new EventBus();
      attachDOMEventsToEventBus(globalEventBus);
      return globalEventBus;
     }
     exports.attachDOMEventsToEventBus = attachDOMEventsToEventBus;
     exports.getGlobalEventBus = getGlobalEventBus;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebPDFFindController = {}, root.pdfjsWebUIUtils);
    }(this, function (exports, uiUtils) {
     var scrollIntoView = uiUtils.scrollIntoView;
     var FindStates = {
      FIND_FOUND: 0,
      FIND_NOTFOUND: 1,
      FIND_WRAPPED: 2,
      FIND_PENDING: 3
     };
     var FIND_SCROLL_OFFSET_TOP = -50;
     var FIND_SCROLL_OFFSET_LEFT = -400;
     var CHARACTERS_TO_NORMALIZE = {
      '\u2018': '\'',
      '\u2019': '\'',
      '\u201A': '\'',
      '\u201B': '\'',
      '\u201C': '"',
      '\u201D': '"',
      '\u201E': '"',
      '\u201F': '"',
      '\u00BC': '1/4',
      '\u00BD': '1/2',
      '\u00BE': '3/4'
     };
     var PDFFindController = function PDFFindControllerClosure() {
      function PDFFindController(options) {
       this.pdfViewer = options.pdfViewer || null;
       this.onUpdateResultsCount = null;
       this.onUpdateState = null;
       this.reset();
       var replace = Object.keys(CHARACTERS_TO_NORMALIZE).join('');
       this.normalizationRegex = new RegExp('[' + replace + ']', 'g');
      }
      PDFFindController.prototype = {
       reset: function PDFFindController_reset() {
        this.startedTextExtraction = false;
        this.extractTextPromises = [];
        this.pendingFindMatches = Object.create(null);
        this.active = false;
        this.pageContents = [];
        this.pageMatches = [];
        this.pageMatchesLength = null;
        this.matchCount = 0;
        this.selected = {
         pageIdx: -1,
         matchIdx: -1
        };
        this.offset = {
         pageIdx: null,
         matchIdx: null
        };
        this.pagesToSearch = null;
        this.resumePageIdx = null;
        this.state = null;
        this.dirtyMatch = false;
        this.findTimeout = null;
        this.firstPagePromise = new Promise(function (resolve) {
         this.resolveFirstPage = resolve;
        }.bind(this));
       },
       normalize: function PDFFindController_normalize(text) {
        return text.replace(this.normalizationRegex, function (ch) {
         return CHARACTERS_TO_NORMALIZE[ch];
        });
       },
       _prepareMatches: function PDFFindController_prepareMatches(matchesWithLength, matches, matchesLength) {
        function isSubTerm(matchesWithLength, currentIndex) {
         var currentElem, prevElem, nextElem;
         currentElem = matchesWithLength[currentIndex];
         nextElem = matchesWithLength[currentIndex + 1];
         if (currentIndex < matchesWithLength.length - 1 && currentElem.match === nextElem.match) {
          currentElem.skipped = true;
          return true;
         }
         for (var i = currentIndex - 1; i >= 0; i--) {
          prevElem = matchesWithLength[i];
          if (prevElem.skipped) {
           continue;
          }
          if (prevElem.match + prevElem.matchLength < currentElem.match) {
           break;
          }
          if (prevElem.match + prevElem.matchLength >= currentElem.match + currentElem.matchLength) {
           currentElem.skipped = true;
           return true;
          }
         }
         return false;
        }
        var i, len;
        matchesWithLength.sort(function (a, b) {
         return a.match === b.match ? a.matchLength - b.matchLength : a.match - b.match;
        });
        for (i = 0, len = matchesWithLength.length; i < len; i++) {
         if (isSubTerm(matchesWithLength, i)) {
          continue;
         }
         matches.push(matchesWithLength[i].match);
         matchesLength.push(matchesWithLength[i].matchLength);
        }
       },
       calcFindPhraseMatch: function PDFFindController_calcFindPhraseMatch(query, pageIndex, pageContent) {
        var matches = [];
        var queryLen = query.length;
        var matchIdx = -queryLen;
        while (true) {
         matchIdx = pageContent.indexOf(query, matchIdx + queryLen);
         if (matchIdx === -1) {
          break;
         }
         matches.push(matchIdx);
        }
        this.pageMatches[pageIndex] = matches;
       },
       calcFindWordMatch: function PDFFindController_calcFindWordMatch(query, pageIndex, pageContent) {
        var matchesWithLength = [];
        var queryArray = query.match(/\S+/g);
        var subquery, subqueryLen, matchIdx;
        for (var i = 0, len = queryArray.length; i < len; i++) {
         subquery = queryArray[i];
         subqueryLen = subquery.length;
         matchIdx = -subqueryLen;
         while (true) {
          matchIdx = pageContent.indexOf(subquery, matchIdx + subqueryLen);
          if (matchIdx === -1) {
           break;
          }
          matchesWithLength.push({
           match: matchIdx,
           matchLength: subqueryLen,
           skipped: false
          });
         }
        }
        if (!this.pageMatchesLength) {
         this.pageMatchesLength = [];
        }
        this.pageMatchesLength[pageIndex] = [];
        this.pageMatches[pageIndex] = [];
        this._prepareMatches(matchesWithLength, this.pageMatches[pageIndex], this.pageMatchesLength[pageIndex]);
       },
       calcFindMatch: function PDFFindController_calcFindMatch(pageIndex) {
        var pageContent = this.normalize(this.pageContents[pageIndex]);
        var query = this.normalize(this.state.query);
        var caseSensitive = this.state.caseSensitive;
        var phraseSearch = this.state.phraseSearch;
        var queryLen = query.length;
        if (queryLen === 0) {
         return;
        }
        if (!caseSensitive) {
         pageContent = pageContent.toLowerCase();
         query = query.toLowerCase();
        }
        if (phraseSearch) {
         this.calcFindPhraseMatch(query, pageIndex, pageContent);
        } else {
         this.calcFindWordMatch(query, pageIndex, pageContent);
        }
        this.updatePage(pageIndex);
        if (this.resumePageIdx === pageIndex) {
         this.resumePageIdx = null;
         this.nextPageMatch();
        }
        if (this.pageMatches[pageIndex].length > 0) {
         this.matchCount += this.pageMatches[pageIndex].length;
         this.updateUIResultsCount();
        }
       },
       extractText: function PDFFindController_extractText() {
        if (this.startedTextExtraction) {
         return;
        }
        this.startedTextExtraction = true;
        this.pageContents = [];
        var extractTextPromisesResolves = [];
        var numPages = this.pdfViewer.pagesCount;
        for (var i = 0; i < numPages; i++) {
         this.extractTextPromises.push(new Promise(function (resolve) {
          extractTextPromisesResolves.push(resolve);
         }));
        }
        var self = this;
        function extractPageText(pageIndex) {
         self.pdfViewer.getPageTextContent(pageIndex).then(function textContentResolved(textContent) {
          var textItems = textContent.items;
          var str = [];
          for (var i = 0, len = textItems.length; i < len; i++) {
           str.push(textItems[i].str);
          }
          self.pageContents.push(str.join(''));
          extractTextPromisesResolves[pageIndex](pageIndex);
          if (pageIndex + 1 < self.pdfViewer.pagesCount) {
           extractPageText(pageIndex + 1);
          }
         });
        }
        extractPageText(0);
       },
       executeCommand: function PDFFindController_executeCommand(cmd, state) {
        if (this.state === null || cmd !== 'findagain') {
         this.dirtyMatch = true;
        }
        this.state = state;
        this.updateUIState(FindStates.FIND_PENDING);
        this.firstPagePromise.then(function () {
         this.extractText();
         clearTimeout(this.findTimeout);
         if (cmd === 'find') {
          this.findTimeout = setTimeout(this.nextMatch.bind(this), 250);
         } else {
          this.nextMatch();
         }
        }.bind(this));
       },
       updatePage: function PDFFindController_updatePage(index) {
        if (this.selected.pageIdx === index) {
         this.pdfViewer.currentPageNumber = index + 1;
        }
        var page = this.pdfViewer.getPageView(index);
        if (page.textLayer) {
         page.textLayer.updateMatches();
        }
       },
       nextMatch: function PDFFindController_nextMatch() {
        var previous = this.state.findPrevious;
        var currentPageIndex = this.pdfViewer.currentPageNumber - 1;
        var numPages = this.pdfViewer.pagesCount;
        this.active = true;
        if (this.dirtyMatch) {
         this.dirtyMatch = false;
         this.selected.pageIdx = this.selected.matchIdx = -1;
         this.offset.pageIdx = currentPageIndex;
         this.offset.matchIdx = null;
         this.hadMatch = false;
         this.resumePageIdx = null;
         this.pageMatches = [];
         this.matchCount = 0;
         this.pageMatchesLength = null;
         var self = this;
         for (var i = 0; i < numPages; i++) {
          this.updatePage(i);
          if (!(i in this.pendingFindMatches)) {
           this.pendingFindMatches[i] = true;
           this.extractTextPromises[i].then(function (pageIdx) {
            delete self.pendingFindMatches[pageIdx];
            self.calcFindMatch(pageIdx);
           });
          }
         }
        }
        if (this.state.query === '') {
         this.updateUIState(FindStates.FIND_FOUND);
         return;
        }
        if (this.resumePageIdx) {
         return;
        }
        var offset = this.offset;
        this.pagesToSearch = numPages;
        if (offset.matchIdx !== null) {
         var numPageMatches = this.pageMatches[offset.pageIdx].length;
         if (!previous && offset.matchIdx + 1 < numPageMatches || previous && offset.matchIdx > 0) {
          this.hadMatch = true;
          offset.matchIdx = previous ? offset.matchIdx - 1 : offset.matchIdx + 1;
          this.updateMatch(true);
          return;
         }
         this.advanceOffsetPage(previous);
        }
        this.nextPageMatch();
       },
       matchesReady: function PDFFindController_matchesReady(matches) {
        var offset = this.offset;
        var numMatches = matches.length;
        var previous = this.state.findPrevious;
        if (numMatches) {
         this.hadMatch = true;
         offset.matchIdx = previous ? numMatches - 1 : 0;
         this.updateMatch(true);
         return true;
        } else {
         this.advanceOffsetPage(previous);
         if (offset.wrapped) {
          offset.matchIdx = null;
          if (this.pagesToSearch < 0) {
           this.updateMatch(false);
           return true;
          }
         }
         return false;
        }
       },
       updateMatchPosition: function PDFFindController_updateMatchPosition(pageIndex, index, elements, beginIdx) {
        if (this.selected.matchIdx === index && this.selected.pageIdx === pageIndex) {
         var spot = {
          top: FIND_SCROLL_OFFSET_TOP,
          left: FIND_SCROLL_OFFSET_LEFT
         };
         scrollIntoView(elements[beginIdx], spot, true);
        }
       },
       nextPageMatch: function PDFFindController_nextPageMatch() {
        if (this.resumePageIdx !== null) {
         console.error('There can only be one pending page.');
        }
        do {
         var pageIdx = this.offset.pageIdx;
         var matches = this.pageMatches[pageIdx];
         if (!matches) {
          this.resumePageIdx = pageIdx;
          break;
         }
        } while (!this.matchesReady(matches));
       },
       advanceOffsetPage: function PDFFindController_advanceOffsetPage(previous) {
        var offset = this.offset;
        var numPages = this.extractTextPromises.length;
        offset.pageIdx = previous ? offset.pageIdx - 1 : offset.pageIdx + 1;
        offset.matchIdx = null;
        this.pagesToSearch--;
        if (offset.pageIdx >= numPages || offset.pageIdx < 0) {
         offset.pageIdx = previous ? numPages - 1 : 0;
         offset.wrapped = true;
        }
       },
       updateMatch: function PDFFindController_updateMatch(found) {
        var state = FindStates.FIND_NOTFOUND;
        var wrapped = this.offset.wrapped;
        this.offset.wrapped = false;
        if (found) {
         var previousPage = this.selected.pageIdx;
         this.selected.pageIdx = this.offset.pageIdx;
         this.selected.matchIdx = this.offset.matchIdx;
         state = wrapped ? FindStates.FIND_WRAPPED : FindStates.FIND_FOUND;
         if (previousPage !== -1 && previousPage !== this.selected.pageIdx) {
          this.updatePage(previousPage);
         }
        }
        this.updateUIState(state, this.state.findPrevious);
        if (this.selected.pageIdx !== -1) {
         this.updatePage(this.selected.pageIdx);
        }
       },
       updateUIResultsCount: function PDFFindController_updateUIResultsCount() {
        if (this.onUpdateResultsCount) {
         this.onUpdateResultsCount(this.matchCount);
        }
       },
       updateUIState: function PDFFindController_updateUIState(state, previous) {
        if (this.onUpdateState) {
         this.onUpdateState(state, previous, this.matchCount);
        }
       }
      };
      return PDFFindController;
     }();
     exports.FindStates = FindStates;
     exports.PDFFindController = PDFFindController;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebPDFHistory = {}, root.pdfjsWebDOMEvents);
    }(this, function (exports, domEvents) {
     function PDFHistory(options) {
      this.linkService = options.linkService;
      this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
      this.initialized = false;
      this.initialDestination = null;
      this.initialBookmark = null;
     }
     PDFHistory.prototype = {
      initialize: function pdfHistoryInitialize(fingerprint) {
       this.initialized = true;
       this.reInitialized = false;
       this.allowHashChange = true;
       this.historyUnlocked = true;
       this.isViewerInPresentationMode = false;
       this.previousHash = window.location.hash.substring(1);
       this.currentBookmark = '';
       this.currentPage = 0;
       this.updatePreviousBookmark = false;
       this.previousBookmark = '';
       this.previousPage = 0;
       this.nextHashParam = '';
       this.fingerprint = fingerprint;
       this.currentUid = this.uid = 0;
       this.current = {};
       var state = window.history.state;
       if (this._isStateObjectDefined(state)) {
        if (state.target.dest) {
         this.initialDestination = state.target.dest;
        } else {
         this.initialBookmark = state.target.hash;
        }
        this.currentUid = state.uid;
        this.uid = state.uid + 1;
        this.current = state.target;
       } else {
        if (state && state.fingerprint && this.fingerprint !== state.fingerprint) {
         this.reInitialized = true;
        }
        this._pushOrReplaceState({ fingerprint: this.fingerprint }, true);
       }
       var self = this;
       window.addEventListener('popstate', function pdfHistoryPopstate(evt) {
        if (!self.historyUnlocked) {
         return;
        }
        if (evt.state) {
         self._goTo(evt.state);
         return;
        }
        if (self.uid === 0) {
         var previousParams = self.previousHash && self.currentBookmark && self.previousHash !== self.currentBookmark ? {
          hash: self.currentBookmark,
          page: self.currentPage
         } : { page: 1 };
         replacePreviousHistoryState(previousParams, function () {
          updateHistoryWithCurrentHash();
         });
        } else {
         updateHistoryWithCurrentHash();
        }
       }, false);
       function updateHistoryWithCurrentHash() {
        self.previousHash = window.location.hash.slice(1);
        self._pushToHistory({ hash: self.previousHash }, false, true);
        self._updatePreviousBookmark();
       }
       function replacePreviousHistoryState(params, callback) {
        self.historyUnlocked = false;
        self.allowHashChange = false;
        window.addEventListener('popstate', rewriteHistoryAfterBack);
        history.back();
        function rewriteHistoryAfterBack() {
         window.removeEventListener('popstate', rewriteHistoryAfterBack);
         window.addEventListener('popstate', rewriteHistoryAfterForward);
         self._pushToHistory(params, false, true);
         history.forward();
        }
        function rewriteHistoryAfterForward() {
         window.removeEventListener('popstate', rewriteHistoryAfterForward);
         self.allowHashChange = true;
         self.historyUnlocked = true;
         callback();
        }
       }
       function pdfHistoryBeforeUnload() {
        var previousParams = self._getPreviousParams(null, true);
        if (previousParams) {
         var replacePrevious = !self.current.dest && self.current.hash !== self.previousHash;
         self._pushToHistory(previousParams, false, replacePrevious);
         self._updatePreviousBookmark();
        }
        window.removeEventListener('beforeunload', pdfHistoryBeforeUnload, false);
       }
       window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
       window.addEventListener('pageshow', function pdfHistoryPageShow(evt) {
        window.addEventListener('beforeunload', pdfHistoryBeforeUnload, false);
       }, false);
       self.eventBus.on('presentationmodechanged', function (e) {
        self.isViewerInPresentationMode = e.active;
       });
      },
      clearHistoryState: function pdfHistory_clearHistoryState() {
       this._pushOrReplaceState(null, true);
      },
      _isStateObjectDefined: function pdfHistory_isStateObjectDefined(state) {
       return state && state.uid >= 0 && state.fingerprint && this.fingerprint === state.fingerprint && state.target && state.target.hash ? true : false;
      },
      _pushOrReplaceState: function pdfHistory_pushOrReplaceState(stateObj, replace) {
       if (replace) {
        window.history.replaceState(stateObj, '', document.URL);
       } else {
        window.history.pushState(stateObj, '', document.URL);
       }
      },
      get isHashChangeUnlocked() {
       if (!this.initialized) {
        return true;
       }
       return this.allowHashChange;
      },
      _updatePreviousBookmark: function pdfHistory_updatePreviousBookmark() {
       if (this.updatePreviousBookmark && this.currentBookmark && this.currentPage) {
        this.previousBookmark = this.currentBookmark;
        this.previousPage = this.currentPage;
        this.updatePreviousBookmark = false;
       }
      },
      updateCurrentBookmark: function pdfHistoryUpdateCurrentBookmark(bookmark, pageNum) {
       if (this.initialized) {
        this.currentBookmark = bookmark.substring(1);
        this.currentPage = pageNum | 0;
        this._updatePreviousBookmark();
       }
      },
      updateNextHashParam: function pdfHistoryUpdateNextHashParam(param) {
       if (this.initialized) {
        this.nextHashParam = param;
       }
      },
      push: function pdfHistoryPush(params, isInitialBookmark) {
       if (!(this.initialized && this.historyUnlocked)) {
        return;
       }
       if (params.dest && !params.hash) {
        params.hash = this.current.hash && this.current.dest && this.current.dest === params.dest ? this.current.hash : this.linkService.getDestinationHash(params.dest).split('#')[1];
       }
       if (params.page) {
        params.page |= 0;
       }
       if (isInitialBookmark) {
        var target = window.history.state.target;
        if (!target) {
         this._pushToHistory(params, false);
         this.previousHash = window.location.hash.substring(1);
        }
        this.updatePreviousBookmark = this.nextHashParam ? false : true;
        if (target) {
         this._updatePreviousBookmark();
        }
        return;
       }
       if (this.nextHashParam) {
        if (this.nextHashParam === params.hash) {
         this.nextHashParam = null;
         this.updatePreviousBookmark = true;
         return;
        } else {
         this.nextHashParam = null;
        }
       }
       if (params.hash) {
        if (this.current.hash) {
         if (this.current.hash !== params.hash) {
          this._pushToHistory(params, true);
         } else {
          if (!this.current.page && params.page) {
           this._pushToHistory(params, false, true);
          }
          this.updatePreviousBookmark = true;
         }
        } else {
         this._pushToHistory(params, true);
        }
       } else if (this.current.page && params.page && this.current.page !== params.page) {
        this._pushToHistory(params, true);
       }
      },
      _getPreviousParams: function pdfHistory_getPreviousParams(onlyCheckPage, beforeUnload) {
       if (!(this.currentBookmark && this.currentPage)) {
        return null;
       } else if (this.updatePreviousBookmark) {
        this.updatePreviousBookmark = false;
       }
       if (this.uid > 0 && !(this.previousBookmark && this.previousPage)) {
        return null;
       }
       if (!this.current.dest && !onlyCheckPage || beforeUnload) {
        if (this.previousBookmark === this.currentBookmark) {
         return null;
        }
       } else if (this.current.page || onlyCheckPage) {
        if (this.previousPage === this.currentPage) {
         return null;
        }
       } else {
        return null;
       }
       var params = {
        hash: this.currentBookmark,
        page: this.currentPage
       };
       if (this.isViewerInPresentationMode) {
        params.hash = null;
       }
       return params;
      },
      _stateObj: function pdfHistory_stateObj(params) {
       return {
        fingerprint: this.fingerprint,
        uid: this.uid,
        target: params
       };
      },
      _pushToHistory: function pdfHistory_pushToHistory(params, addPrevious, overwrite) {
       if (!this.initialized) {
        return;
       }
       if (!params.hash && params.page) {
        params.hash = 'page=' + params.page;
       }
       if (addPrevious && !overwrite) {
        var previousParams = this._getPreviousParams();
        if (previousParams) {
         var replacePrevious = !this.current.dest && this.current.hash !== this.previousHash;
         this._pushToHistory(previousParams, false, replacePrevious);
        }
       }
       this._pushOrReplaceState(this._stateObj(params), overwrite || this.uid === 0);
       this.currentUid = this.uid++;
       this.current = params;
       this.updatePreviousBookmark = true;
      },
      _goTo: function pdfHistory_goTo(state) {
       if (!(this.initialized && this.historyUnlocked && this._isStateObjectDefined(state))) {
        return;
       }
       if (!this.reInitialized && state.uid < this.currentUid) {
        var previousParams = this._getPreviousParams(true);
        if (previousParams) {
         this._pushToHistory(this.current, false);
         this._pushToHistory(previousParams, false);
         this.currentUid = state.uid;
         window.history.back();
         return;
        }
       }
       this.historyUnlocked = false;
       if (state.target.dest) {
        this.linkService.navigateTo(state.target.dest);
       } else {
        this.linkService.setHash(state.target.hash);
       }
       this.currentUid = state.uid;
       if (state.uid > this.uid) {
        this.uid = state.uid;
       }
       this.current = state.target;
       this.updatePreviousBookmark = true;
       var currentHash = window.location.hash.substring(1);
       if (this.previousHash !== currentHash) {
        this.allowHashChange = false;
       }
       this.previousHash = currentHash;
       this.historyUnlocked = true;
      },
      back: function pdfHistoryBack() {
       this.go(-1);
      },
      forward: function pdfHistoryForward() {
       this.go(1);
      },
      go: function pdfHistoryGo(direction) {
       if (this.initialized && this.historyUnlocked) {
        var state = window.history.state;
        if (direction === -1 && state && state.uid > 0) {
         window.history.back();
        } else if (direction === 1 && state && state.uid < this.uid - 1) {
         window.history.forward();
        }
       }
      }
     };
     exports.PDFHistory = PDFHistory;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebPDFLinkService = {}, root.pdfjsWebUIUtils, root.pdfjsWebDOMEvents);
    }(this, function (exports, uiUtils, domEvents) {
     var parseQueryString = uiUtils.parseQueryString;
     var PageNumberRegExp = /^\d+$/;
     function isPageNumber(str) {
      return PageNumberRegExp.test(str);
     }
     var PDFLinkService = function PDFLinkServiceClosure() {
      function PDFLinkService(options) {
       options = options || {};
       this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
       this.baseUrl = null;
       this.pdfDocument = null;
       this.pdfViewer = null;
       this.pdfHistory = null;
       this._pagesRefCache = null;
      }
      PDFLinkService.prototype = {
       setDocument: function PDFLinkService_setDocument(pdfDocument, baseUrl) {
        this.baseUrl = baseUrl;
        this.pdfDocument = pdfDocument;
        this._pagesRefCache = Object.create(null);
       },
       setViewer: function PDFLinkService_setViewer(pdfViewer) {
        this.pdfViewer = pdfViewer;
       },
       setHistory: function PDFLinkService_setHistory(pdfHistory) {
        this.pdfHistory = pdfHistory;
       },
       get pagesCount() {
        return this.pdfDocument ? this.pdfDocument.numPages : 0;
       },
       get page() {
        return this.pdfViewer.currentPageNumber;
       },
       set page(value) {
        this.pdfViewer.currentPageNumber = value;
       },
       navigateTo: function PDFLinkService_navigateTo(dest) {
        var destString = '';
        var self = this;
        var goToDestination = function (destRef) {
         var pageNumber;
         if (destRef instanceof Object) {
          pageNumber = self._cachedPageNumber(destRef);
         } else if ((destRef | 0) === destRef) {
          pageNumber = destRef + 1;
         } else {
          console.error('PDFLinkService_navigateTo: "' + destRef + '" is not a valid destination reference.');
          return;
         }
         if (pageNumber) {
          if (pageNumber < 1 || pageNumber > self.pagesCount) {
           console.error('PDFLinkService_navigateTo: "' + pageNumber + '" is a non-existent page number.');
           return;
          }
          self.pdfViewer.scrollPageIntoView({
           pageNumber: pageNumber,
           destArray: dest
          });
          if (self.pdfHistory) {
           self.pdfHistory.push({
            dest: dest,
            hash: destString,
            page: pageNumber
           });
          }
         } else {
          self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
           self.cachePageRef(pageIndex + 1, destRef);
           goToDestination(destRef);
          }).catch(function () {
           console.error('PDFLinkService_navigateTo: "' + destRef + '" is not a valid page reference.');
           return;
          });
         }
        };
        var destinationPromise;
        if (typeof dest === 'string') {
         destString = dest;
         destinationPromise = this.pdfDocument.getDestination(dest);
        } else {
         destinationPromise = Promise.resolve(dest);
        }
        destinationPromise.then(function (destination) {
         dest = destination;
         if (!(destination instanceof Array)) {
          console.error('PDFLinkService_navigateTo: "' + destination + '" is not a valid destination array.');
          return;
         }
         goToDestination(destination[0]);
        });
       },
       getDestinationHash: function PDFLinkService_getDestinationHash(dest) {
        if (typeof dest === 'string') {
         return this.getAnchorUrl('#' + (isPageNumber(dest) ? 'nameddest=' : '') + escape(dest));
        }
        if (dest instanceof Array) {
         var str = JSON.stringify(dest);
         return this.getAnchorUrl('#' + escape(str));
        }
        return this.getAnchorUrl('');
       },
       getAnchorUrl: function PDFLinkService_getAnchorUrl(anchor) {
        return (this.baseUrl || '') + anchor;
       },
       setHash: function PDFLinkService_setHash(hash) {
        var pageNumber, dest;
        if (hash.indexOf('=') >= 0) {
         var params = parseQueryString(hash);
         if ('search' in params) {
          this.eventBus.dispatch('findfromurlhash', {
           source: this,
           query: params['search'].replace(/"/g, ''),
           phraseSearch: params['phrase'] === 'true'
          });
         }
         if ('nameddest' in params) {
          if (this.pdfHistory) {
           this.pdfHistory.updateNextHashParam(params.nameddest);
          }
          this.navigateTo(params.nameddest);
          return;
         }
         if ('page' in params) {
          pageNumber = params.page | 0 || 1;
         }
         if ('zoom' in params) {
          var zoomArgs = params.zoom.split(',');
          var zoomArg = zoomArgs[0];
          var zoomArgNumber = parseFloat(zoomArg);
          if (zoomArg.indexOf('Fit') === -1) {
           dest = [
            null,
            { name: 'XYZ' },
            zoomArgs.length > 1 ? zoomArgs[1] | 0 : null,
            zoomArgs.length > 2 ? zoomArgs[2] | 0 : null,
            zoomArgNumber ? zoomArgNumber / 100 : zoomArg
           ];
          } else {
           if (zoomArg === 'Fit' || zoomArg === 'FitB') {
            dest = [
             null,
             { name: zoomArg }
            ];
           } else if (zoomArg === 'FitH' || zoomArg === 'FitBH' || (zoomArg === 'FitV' || zoomArg === 'FitBV')) {
            dest = [
             null,
             { name: zoomArg },
             zoomArgs.length > 1 ? zoomArgs[1] | 0 : null
            ];
           } else if (zoomArg === 'FitR') {
            if (zoomArgs.length !== 5) {
             console.error('PDFLinkService_setHash: ' + 'Not enough parameters for \'FitR\'.');
            } else {
             dest = [
              null,
              { name: zoomArg },
              zoomArgs[1] | 0,
              zoomArgs[2] | 0,
              zoomArgs[3] | 0,
              zoomArgs[4] | 0
             ];
            }
           } else {
            console.error('PDFLinkService_setHash: \'' + zoomArg + '\' is not a valid zoom value.');
           }
          }
         }
         if (dest) {
          this.pdfViewer.scrollPageIntoView({
           pageNumber: pageNumber || this.page,
           destArray: dest,
           allowNegativeOffset: true
          });
         } else if (pageNumber) {
          this.page = pageNumber;
         }
         if ('pagemode' in params) {
          this.eventBus.dispatch('pagemode', {
           source: this,
           mode: params.pagemode
          });
         }
        } else {
         if (isPageNumber(hash) && hash <= this.pagesCount) {
          console.warn('PDFLinkService_setHash: specifying a page number ' + 'directly after the hash symbol (#) is deprecated, ' + 'please use the "#page=' + hash + '" form instead.');
          this.page = hash | 0;
         }
         dest = unescape(hash);
         try {
          dest = JSON.parse(dest);
          if (!(dest instanceof Array)) {
           dest = dest.toString();
          }
         } catch (ex) {
         }
         if (typeof dest === 'string' || isValidExplicitDestination(dest)) {
          if (this.pdfHistory) {
           this.pdfHistory.updateNextHashParam(dest);
          }
          this.navigateTo(dest);
          return;
         }
         console.error('PDFLinkService_setHash: \'' + unescape(hash) + '\' is not a valid destination.');
        }
       },
       executeNamedAction: function PDFLinkService_executeNamedAction(action) {
        switch (action) {
        case 'GoBack':
         if (this.pdfHistory) {
          this.pdfHistory.back();
         }
         break;
        case 'GoForward':
         if (this.pdfHistory) {
          this.pdfHistory.forward();
         }
         break;
        case 'NextPage':
         if (this.page < this.pagesCount) {
          this.page++;
         }
         break;
        case 'PrevPage':
         if (this.page > 1) {
          this.page--;
         }
         break;
        case 'LastPage':
         this.page = this.pagesCount;
         break;
        case 'FirstPage':
         this.page = 1;
         break;
        default:
         break;
        }
        this.eventBus.dispatch('namedaction', {
         source: this,
         action: action
        });
       },
       cachePageRef: function PDFLinkService_cachePageRef(pageNum, pageRef) {
        var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
        this._pagesRefCache[refStr] = pageNum;
       },
       _cachedPageNumber: function PDFLinkService_cachedPageNumber(pageRef) {
        var refStr = pageRef.num + ' ' + pageRef.gen + ' R';
        return this._pagesRefCache && this._pagesRefCache[refStr] || null;
       }
      };
      function isValidExplicitDestination(dest) {
       if (!(dest instanceof Array)) {
        return false;
       }
       var destLength = dest.length, allowNull = true;
       if (destLength < 2) {
        return false;
       }
       var page = dest[0];
       if (!(typeof page === 'object' && typeof page.num === 'number' && (page.num | 0) === page.num && typeof page.gen === 'number' && (page.gen | 0) === page.gen) && !(typeof page === 'number' && (page | 0) === page && page >= 0)) {
        return false;
       }
       var zoom = dest[1];
       if (!(typeof zoom === 'object' && typeof zoom.name === 'string')) {
        return false;
       }
       switch (zoom.name) {
       case 'XYZ':
        if (destLength !== 5) {
         return false;
        }
        break;
       case 'Fit':
       case 'FitB':
        return destLength === 2;
       case 'FitH':
       case 'FitBH':
       case 'FitV':
       case 'FitBV':
        if (destLength !== 3) {
         return false;
        }
        break;
       case 'FitR':
        if (destLength !== 6) {
         return false;
        }
        allowNull = false;
        break;
       default:
        return false;
       }
       for (var i = 2; i < destLength; i++) {
        var param = dest[i];
        if (!(typeof param === 'number' || allowNull && param === null)) {
         return false;
        }
       }
       return true;
      }
      return PDFLinkService;
     }();
     var SimpleLinkService = function SimpleLinkServiceClosure() {
      function SimpleLinkService() {
      }
      SimpleLinkService.prototype = {
       get page() {
        return 0;
       },
       set page(value) {
       },
       navigateTo: function (dest) {
       },
       getDestinationHash: function (dest) {
        return '#';
       },
       getAnchorUrl: function (hash) {
        return '#';
       },
       setHash: function (hash) {
       },
       executeNamedAction: function (action) {
       },
       cachePageRef: function (pageNum, pageRef) {
       }
      };
      return SimpleLinkService;
     }();
     exports.PDFLinkService = PDFLinkService;
     exports.SimpleLinkService = SimpleLinkService;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebPDFPageView = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFRenderingQueue, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
    }(this, function (exports, uiUtils, pdfRenderingQueue, domEvents, pdfjsLib) {
     var CSS_UNITS = uiUtils.CSS_UNITS;
     var DEFAULT_SCALE = uiUtils.DEFAULT_SCALE;
     var getOutputScale = uiUtils.getOutputScale;
     var approximateFraction = uiUtils.approximateFraction;
     var roundToDivide = uiUtils.roundToDivide;
     var RenderingStates = pdfRenderingQueue.RenderingStates;
     var TEXT_LAYER_RENDER_DELAY = 200;
     var PDFPageView = function PDFPageViewClosure() {
      function PDFPageView(options) {
       var container = options.container;
       var id = options.id;
       var scale = options.scale;
       var defaultViewport = options.defaultViewport;
       var renderingQueue = options.renderingQueue;
       var textLayerFactory = options.textLayerFactory;
       var annotationLayerFactory = options.annotationLayerFactory;
       var enhanceTextSelection = options.enhanceTextSelection || false;
       var renderInteractiveForms = options.renderInteractiveForms || false;
       this.id = id;
       this.renderingId = 'page' + id;
       this.pageLabel = null;
       this.rotation = 0;
       this.scale = scale || DEFAULT_SCALE;
       this.viewport = defaultViewport;
       this.pdfPageRotate = defaultViewport.rotation;
       this.hasRestrictedScaling = false;
       this.enhanceTextSelection = enhanceTextSelection;
       this.renderInteractiveForms = renderInteractiveForms;
       this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
       this.renderingQueue = renderingQueue;
       this.textLayerFactory = textLayerFactory;
       this.annotationLayerFactory = annotationLayerFactory;
       this.renderTask = null;
       this.renderingState = RenderingStates.INITIAL;
       this.resume = null;
       this.onBeforeDraw = null;
       this.onAfterDraw = null;
       this.textLayer = null;
       this.zoomLayer = null;
       this.annotationLayer = null;
       var div = document.createElement('div');
       div.id = 'pageContainer' + this.id;
       div.className = 'page';
       div.style.width = Math.floor(this.viewport.width) + 'px';
       div.style.height = Math.floor(this.viewport.height) + 'px';
       div.setAttribute('data-page-number', this.id);
       this.div = div;
       container.appendChild(div);
      }
      PDFPageView.prototype = {
       setPdfPage: function PDFPageView_setPdfPage(pdfPage) {
        this.pdfPage = pdfPage;
        this.pdfPageRotate = pdfPage.rotate;
        var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
        this.viewport = pdfPage.getViewport(this.scale * CSS_UNITS, totalRotation);
        this.stats = pdfPage.stats;
        this.reset();
       },
       destroy: function PDFPageView_destroy() {
        this.zoomLayer = null;
        this.reset();
        if (this.pdfPage) {
         this.pdfPage.cleanup();
        }
       },
       reset: function PDFPageView_reset(keepZoomLayer, keepAnnotations) {
        this.cancelRendering();
        var div = this.div;
        div.style.width = Math.floor(this.viewport.width) + 'px';
        div.style.height = Math.floor(this.viewport.height) + 'px';
        var childNodes = div.childNodes;
        var currentZoomLayerNode = keepZoomLayer && this.zoomLayer || null;
        var currentAnnotationNode = keepAnnotations && this.annotationLayer && this.annotationLayer.div || null;
        for (var i = childNodes.length - 1; i >= 0; i--) {
         var node = childNodes[i];
         if (currentZoomLayerNode === node || currentAnnotationNode === node) {
          continue;
         }
         div.removeChild(node);
        }
        div.removeAttribute('data-loaded');
        if (currentAnnotationNode) {
         this.annotationLayer.hide();
        } else {
         this.annotationLayer = null;
        }
        if (this.canvas && !currentZoomLayerNode) {
         this.canvas.width = 0;
         this.canvas.height = 0;
         delete this.canvas;
        }
        this.loadingIconDiv = document.createElement('div');
        this.loadingIconDiv.className = 'loadingIcon';
        div.appendChild(this.loadingIconDiv);
       },
       update: function PDFPageView_update(scale, rotation) {
        this.scale = scale || this.scale;
        if (typeof rotation !== 'undefined') {
         this.rotation = rotation;
        }
        var totalRotation = (this.rotation + this.pdfPageRotate) % 360;
        this.viewport = this.viewport.clone({
         scale: this.scale * CSS_UNITS,
         rotation: totalRotation
        });
        var isScalingRestricted = false;
        if (this.canvas && pdfjsLib.PDFJS.maxCanvasPixels > 0) {
         var outputScale = this.outputScale;
         if ((Math.floor(this.viewport.width) * outputScale.sx | 0) * (Math.floor(this.viewport.height) * outputScale.sy | 0) > pdfjsLib.PDFJS.maxCanvasPixels) {
          isScalingRestricted = true;
         }
        }
        if (this.canvas) {
         if (pdfjsLib.PDFJS.useOnlyCssZoom || this.hasRestrictedScaling && isScalingRestricted) {
          this.cssTransform(this.canvas, true);
          this.eventBus.dispatch('pagerendered', {
           source: this,
           pageNumber: this.id,
           cssTransform: true
          });
          return;
         }
         if (!this.zoomLayer) {
          this.zoomLayer = this.canvas.parentNode;
          this.zoomLayer.style.position = 'absolute';
         }
        }
        if (this.zoomLayer) {
         this.cssTransform(this.zoomLayer.firstChild);
        }
        this.reset(true, true);
       },
       cancelRendering: function PDFPageView_cancelRendering() {
        if (this.renderTask) {
         this.renderTask.cancel();
         this.renderTask = null;
        }
        this.renderingState = RenderingStates.INITIAL;
        this.resume = null;
        if (this.textLayer) {
         this.textLayer.cancel();
         this.textLayer = null;
        }
       },
       updatePosition: function PDFPageView_updatePosition() {
        if (this.textLayer) {
         this.textLayer.render(TEXT_LAYER_RENDER_DELAY);
        }
       },
       cssTransform: function PDFPageView_transform(canvas, redrawAnnotations) {
        var CustomStyle = pdfjsLib.CustomStyle;
        var width = this.viewport.width;
        var height = this.viewport.height;
        var div = this.div;
        canvas.style.width = canvas.parentNode.style.width = div.style.width = Math.floor(width) + 'px';
        canvas.style.height = canvas.parentNode.style.height = div.style.height = Math.floor(height) + 'px';
        var relativeRotation = this.viewport.rotation - canvas._viewport.rotation;
        var absRotation = Math.abs(relativeRotation);
        var scaleX = 1, scaleY = 1;
        if (absRotation === 90 || absRotation === 270) {
         scaleX = height / width;
         scaleY = width / height;
        }
        var cssTransform = 'rotate(' + relativeRotation + 'deg) ' + 'scale(' + scaleX + ',' + scaleY + ')';
        CustomStyle.setProp('transform', canvas, cssTransform);
        if (this.textLayer) {
         var textLayerViewport = this.textLayer.viewport;
         var textRelativeRotation = this.viewport.rotation - textLayerViewport.rotation;
         var textAbsRotation = Math.abs(textRelativeRotation);
         var scale = width / textLayerViewport.width;
         if (textAbsRotation === 90 || textAbsRotation === 270) {
          scale = width / textLayerViewport.height;
         }
         var textLayerDiv = this.textLayer.textLayerDiv;
         var transX, transY;
         switch (textAbsRotation) {
         case 0:
          transX = transY = 0;
          break;
         case 90:
          transX = 0;
          transY = '-' + textLayerDiv.style.height;
          break;
         case 180:
          transX = '-' + textLayerDiv.style.width;
          transY = '-' + textLayerDiv.style.height;
          break;
         case 270:
          transX = '-' + textLayerDiv.style.width;
          transY = 0;
          break;
         default:
          console.error('Bad rotation value.');
          break;
         }
         CustomStyle.setProp('transform', textLayerDiv, 'rotate(' + textAbsRotation + 'deg) ' + 'scale(' + scale + ', ' + scale + ') ' + 'translate(' + transX + ', ' + transY + ')');
         CustomStyle.setProp('transformOrigin', textLayerDiv, '0% 0%');
        }
        if (redrawAnnotations && this.annotationLayer) {
         this.annotationLayer.render(this.viewport, 'display');
        }
       },
       get width() {
        return this.viewport.width;
       },
       get height() {
        return this.viewport.height;
       },
       getPagePoint: function PDFPageView_getPagePoint(x, y) {
        return this.viewport.convertToPdfPoint(x, y);
       },
       draw: function PDFPageView_draw() {
        if (this.renderingState !== RenderingStates.INITIAL) {
         console.error('Must be in new state before drawing');
         this.reset();
        }
        this.renderingState = RenderingStates.RUNNING;
        var pdfPage = this.pdfPage;
        var viewport = this.viewport;
        var div = this.div;
        var canvasWrapper = document.createElement('div');
        canvasWrapper.style.width = div.style.width;
        canvasWrapper.style.height = div.style.height;
        canvasWrapper.classList.add('canvasWrapper');
        var canvas = document.createElement('canvas');
        canvas.id = 'page' + this.id;
        canvas.setAttribute('hidden', 'hidden');
        var isCanvasHidden = true;
        canvasWrapper.appendChild(canvas);
        if (this.annotationLayer && this.annotationLayer.div) {
         div.insertBefore(canvasWrapper, this.annotationLayer.div);
        } else {
         div.appendChild(canvasWrapper);
        }
        this.canvas = canvas;
        canvas.mozOpaque = true;
        var ctx = canvas.getContext('2d', { alpha: false });
        var outputScale = getOutputScale(ctx);
        this.outputScale = outputScale;
        if (pdfjsLib.PDFJS.useOnlyCssZoom) {
         var actualSizeViewport = viewport.clone({ scale: CSS_UNITS });
         outputScale.sx *= actualSizeViewport.width / viewport.width;
         outputScale.sy *= actualSizeViewport.height / viewport.height;
         outputScale.scaled = true;
        }
        if (pdfjsLib.PDFJS.maxCanvasPixels > 0) {
         var pixelsInViewport = viewport.width * viewport.height;
         var maxScale = Math.sqrt(pdfjsLib.PDFJS.maxCanvasPixels / pixelsInViewport);
         if (outputScale.sx > maxScale || outputScale.sy > maxScale) {
          outputScale.sx = maxScale;
          outputScale.sy = maxScale;
          outputScale.scaled = true;
          this.hasRestrictedScaling = true;
         } else {
          this.hasRestrictedScaling = false;
         }
        }
        var sfx = approximateFraction(outputScale.sx);
        var sfy = approximateFraction(outputScale.sy);
        canvas.width = roundToDivide(viewport.width * outputScale.sx, sfx[0]);
        canvas.height = roundToDivide(viewport.height * outputScale.sy, sfy[0]);
        canvas.style.width = roundToDivide(viewport.width, sfx[1]) + 'px';
        canvas.style.height = roundToDivide(viewport.height, sfy[1]) + 'px';
        canvas._viewport = viewport;
        var textLayerDiv = null;
        var textLayer = null;
        if (this.textLayerFactory) {
         textLayerDiv = document.createElement('div');
         textLayerDiv.className = 'textLayer';
         textLayerDiv.style.width = canvasWrapper.style.width;
         textLayerDiv.style.height = canvasWrapper.style.height;
         if (this.annotationLayer && this.annotationLayer.div) {
          div.insertBefore(textLayerDiv, this.annotationLayer.div);
         } else {
          div.appendChild(textLayerDiv);
         }
         textLayer = this.textLayerFactory.createTextLayerBuilder(textLayerDiv, this.id - 1, this.viewport, this.enhanceTextSelection);
        }
        this.textLayer = textLayer;
        var resolveRenderPromise, rejectRenderPromise;
        var promise = new Promise(function (resolve, reject) {
         resolveRenderPromise = resolve;
         rejectRenderPromise = reject;
        });
        var self = this;
        function pageViewDrawCallback(error) {
         if (renderTask === self.renderTask) {
          self.renderTask = null;
         }
         if (error === 'cancelled') {
          rejectRenderPromise(error);
          return;
         }
         self.renderingState = RenderingStates.FINISHED;
         if (isCanvasHidden) {
          self.canvas.removeAttribute('hidden');
          isCanvasHidden = false;
         }
         if (self.loadingIconDiv) {
          div.removeChild(self.loadingIconDiv);
          delete self.loadingIconDiv;
         }
         if (self.zoomLayer) {
          var zoomLayerCanvas = self.zoomLayer.firstChild;
          zoomLayerCanvas.width = 0;
          zoomLayerCanvas.height = 0;
          if (div.contains(self.zoomLayer)) {
           div.removeChild(self.zoomLayer);
          }
          self.zoomLayer = null;
         }
         self.error = error;
         self.stats = pdfPage.stats;
         if (self.onAfterDraw) {
          self.onAfterDraw();
         }
         self.eventBus.dispatch('pagerendered', {
          source: self,
          pageNumber: self.id,
          cssTransform: false
         });
         if (!error) {
          resolveRenderPromise(undefined);
         } else {
          rejectRenderPromise(error);
         }
        }
        var renderContinueCallback = null;
        if (this.renderingQueue) {
         renderContinueCallback = function renderContinueCallback(cont) {
          if (!self.renderingQueue.isHighestPriority(self)) {
           self.renderingState = RenderingStates.PAUSED;
           self.resume = function resumeCallback() {
            self.renderingState = RenderingStates.RUNNING;
            cont();
           };
           return;
          }
          if (isCanvasHidden) {
           self.canvas.removeAttribute('hidden');
           isCanvasHidden = false;
          }
          cont();
         };
        }
        var transform = !outputScale.scaled ? null : [
         outputScale.sx,
         0,
         0,
         outputScale.sy,
         0,
         0
        ];
        var renderContext = {
         canvasContext: ctx,
         transform: transform,
         viewport: this.viewport,
         renderInteractiveForms: this.renderInteractiveForms
        };
        var renderTask = this.renderTask = this.pdfPage.render(renderContext);
        renderTask.onContinue = renderContinueCallback;
        this.renderTask.promise.then(function pdfPageRenderCallback() {
         pageViewDrawCallback(null);
         if (textLayer) {
          self.pdfPage.getTextContent({ normalizeWhitespace: true }).then(function textContentResolved(textContent) {
           textLayer.setTextContent(textContent);
           textLayer.render(TEXT_LAYER_RENDER_DELAY);
          });
         }
        }, function pdfPageRenderError(error) {
         pageViewDrawCallback(error);
        });
        if (this.annotationLayerFactory) {
         if (!this.annotationLayer) {
          this.annotationLayer = this.annotationLayerFactory.createAnnotationLayerBuilder(div, this.pdfPage, this.renderInteractiveForms);
         }
         this.annotationLayer.render(this.viewport, 'display');
        }
        div.setAttribute('data-loaded', true);
        if (self.onBeforeDraw) {
         self.onBeforeDraw();
        }
        return promise;
       },
       setPageLabel: function PDFView_setPageLabel(label) {
        this.pageLabel = typeof label === 'string' ? label : null;
        if (this.pageLabel !== null) {
         this.div.setAttribute('data-page-label', this.pageLabel);
        } else {
         this.div.removeAttribute('data-page-label');
        }
       }
      };
      return PDFPageView;
     }();
     exports.PDFPageView = PDFPageView;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebTextLayerBuilder = {}, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
    }(this, function (exports, domEvents, pdfjsLib) {
     var EXPAND_DIVS_TIMEOUT = 300;
     var TextLayerBuilder = function TextLayerBuilderClosure() {
      function TextLayerBuilder(options) {
       this.textLayerDiv = options.textLayerDiv;
       this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
       this.textContent = null;
       this.renderingDone = false;
       this.pageIdx = options.pageIndex;
       this.pageNumber = this.pageIdx + 1;
       this.matches = [];
       this.viewport = options.viewport;
       this.textDivs = [];
       this.findController = options.findController || null;
       this.textLayerRenderTask = null;
       this.enhanceTextSelection = options.enhanceTextSelection;
       this._bindMouse();
      }
      TextLayerBuilder.prototype = {
       _finishRendering: function TextLayerBuilder_finishRendering() {
        this.renderingDone = true;
        if (!this.enhanceTextSelection) {
         var endOfContent = document.createElement('div');
         endOfContent.className = 'endOfContent';
         this.textLayerDiv.appendChild(endOfContent);
        }
        this.eventBus.dispatch('textlayerrendered', {
         source: this,
         pageNumber: this.pageNumber,
         numTextDivs: this.textDivs.length
        });
       },
       render: function TextLayerBuilder_render(timeout) {
        if (!this.textContent || this.renderingDone) {
         return;
        }
        this.cancel();
        this.textDivs = [];
        var textLayerFrag = document.createDocumentFragment();
        this.textLayerRenderTask = pdfjsLib.renderTextLayer({
         textContent: this.textContent,
         container: textLayerFrag,
         viewport: this.viewport,
         textDivs: this.textDivs,
         timeout: timeout,
         enhanceTextSelection: this.enhanceTextSelection
        });
        this.textLayerRenderTask.promise.then(function () {
         this.textLayerDiv.appendChild(textLayerFrag);
         this._finishRendering();
         this.updateMatches();
        }.bind(this), function (reason) {
        });
       },
       cancel: function TextLayerBuilder_cancel() {
        if (this.textLayerRenderTask) {
         this.textLayerRenderTask.cancel();
         this.textLayerRenderTask = null;
        }
       },
       setTextContent: function TextLayerBuilder_setTextContent(textContent) {
        this.cancel();
        this.textContent = textContent;
       },
       convertMatches: function TextLayerBuilder_convertMatches(matches, matchesLength) {
        var i = 0;
        var iIndex = 0;
        var bidiTexts = this.textContent.items;
        var end = bidiTexts.length - 1;
        var queryLen = this.findController === null ? 0 : this.findController.state.query.length;
        var ret = [];
        if (!matches) {
         return ret;
        }
        for (var m = 0, len = matches.length; m < len; m++) {
         var matchIdx = matches[m];
         while (i !== end && matchIdx >= iIndex + bidiTexts[i].str.length) {
          iIndex += bidiTexts[i].str.length;
          i++;
         }
         if (i === bidiTexts.length) {
          console.error('Could not find a matching mapping');
         }
         var match = {
          begin: {
           divIdx: i,
           offset: matchIdx - iIndex
          }
         };
         if (matchesLength) {
          matchIdx += matchesLength[m];
         } else {
          matchIdx += queryLen;
         }
         while (i !== end && matchIdx > iIndex + bidiTexts[i].str.length) {
          iIndex += bidiTexts[i].str.length;
          i++;
         }
         match.end = {
          divIdx: i,
          offset: matchIdx - iIndex
         };
         ret.push(match);
        }
        return ret;
       },
       renderMatches: function TextLayerBuilder_renderMatches(matches) {
        if (matches.length === 0) {
         return;
        }
        var bidiTexts = this.textContent.items;
        var textDivs = this.textDivs;
        var prevEnd = null;
        var pageIdx = this.pageIdx;
        var isSelectedPage = this.findController === null ? false : pageIdx === this.findController.selected.pageIdx;
        var selectedMatchIdx = this.findController === null ? -1 : this.findController.selected.matchIdx;
        var highlightAll = this.findController === null ? false : this.findController.state.highlightAll;
        var infinity = {
         divIdx: -1,
         offset: undefined
        };
        function beginText(begin, className) {
         var divIdx = begin.divIdx;
         textDivs[divIdx].textContent = '';
         appendTextToDiv(divIdx, 0, begin.offset, className);
        }
        function appendTextToDiv(divIdx, fromOffset, toOffset, className) {
         var div = textDivs[divIdx];
         var content = bidiTexts[divIdx].str.substring(fromOffset, toOffset);
         var node = document.createTextNode(content);
         if (className) {
          var span = document.createElement('span');
          span.className = className;
          span.appendChild(node);
          div.appendChild(span);
          return;
         }
         div.appendChild(node);
        }
        var i0 = selectedMatchIdx, i1 = i0 + 1;
        if (highlightAll) {
         i0 = 0;
         i1 = matches.length;
        } else if (!isSelectedPage) {
         return;
        }
        for (var i = i0; i < i1; i++) {
         var match = matches[i];
         var begin = match.begin;
         var end = match.end;
         var isSelected = isSelectedPage && i === selectedMatchIdx;
         var highlightSuffix = isSelected ? ' selected' : '';
         if (this.findController) {
          this.findController.updateMatchPosition(pageIdx, i, textDivs, begin.divIdx);
         }
         if (!prevEnd || begin.divIdx !== prevEnd.divIdx) {
          if (prevEnd !== null) {
           appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
          }
          beginText(begin);
         } else {
          appendTextToDiv(prevEnd.divIdx, prevEnd.offset, begin.offset);
         }
         if (begin.divIdx === end.divIdx) {
          appendTextToDiv(begin.divIdx, begin.offset, end.offset, 'highlight' + highlightSuffix);
         } else {
          appendTextToDiv(begin.divIdx, begin.offset, infinity.offset, 'highlight begin' + highlightSuffix);
          for (var n0 = begin.divIdx + 1, n1 = end.divIdx; n0 < n1; n0++) {
           textDivs[n0].className = 'highlight middle' + highlightSuffix;
          }
          beginText(end, 'highlight end' + highlightSuffix);
         }
         prevEnd = end;
        }
        if (prevEnd) {
         appendTextToDiv(prevEnd.divIdx, prevEnd.offset, infinity.offset);
        }
       },
       updateMatches: function TextLayerBuilder_updateMatches() {
        if (!this.renderingDone) {
         return;
        }
        var matches = this.matches;
        var textDivs = this.textDivs;
        var bidiTexts = this.textContent.items;
        var clearedUntilDivIdx = -1;
        for (var i = 0, len = matches.length; i < len; i++) {
         var match = matches[i];
         var begin = Math.max(clearedUntilDivIdx, match.begin.divIdx);
         for (var n = begin, end = match.end.divIdx; n <= end; n++) {
          var div = textDivs[n];
          div.textContent = bidiTexts[n].str;
          div.className = '';
         }
         clearedUntilDivIdx = match.end.divIdx + 1;
        }
        if (this.findController === null || !this.findController.active) {
         return;
        }
        var pageMatches, pageMatchesLength;
        if (this.findController !== null) {
         pageMatches = this.findController.pageMatches[this.pageIdx] || null;
         pageMatchesLength = this.findController.pageMatchesLength ? this.findController.pageMatchesLength[this.pageIdx] || null : null;
        }
        this.matches = this.convertMatches(pageMatches, pageMatchesLength);
        this.renderMatches(this.matches);
       },
       _bindMouse: function TextLayerBuilder_bindMouse() {
        var div = this.textLayerDiv;
        var self = this;
        var expandDivsTimer = null;
        div.addEventListener('mousedown', function (e) {
         if (self.enhanceTextSelection && self.textLayerRenderTask) {
          self.textLayerRenderTask.expandTextDivs(true);
          if (expandDivsTimer) {
           clearTimeout(expandDivsTimer);
           expandDivsTimer = null;
          }
          return;
         }
         var end = div.querySelector('.endOfContent');
         if (!end) {
          return;
         }
         var adjustTop = e.target !== div;
         adjustTop = adjustTop && window.getComputedStyle(end).getPropertyValue('-moz-user-select') !== 'none';
         if (adjustTop) {
          var divBounds = div.getBoundingClientRect();
          var r = Math.max(0, (e.pageY - divBounds.top) / divBounds.height);
          end.style.top = (r * 100).toFixed(2) + '%';
         }
         end.classList.add('active');
        });
        div.addEventListener('mouseup', function (e) {
         if (self.enhanceTextSelection && self.textLayerRenderTask) {
          expandDivsTimer = setTimeout(function () {
           if (self.textLayerRenderTask) {
            self.textLayerRenderTask.expandTextDivs(false);
           }
           expandDivsTimer = null;
          }, EXPAND_DIVS_TIMEOUT);
          return;
         }
         var end = div.querySelector('.endOfContent');
         if (!end) {
          return;
         }
         end.style.top = '';
         end.classList.remove('active');
        });
       }
      };
      return TextLayerBuilder;
     }();
     function DefaultTextLayerFactory() {
     }
     DefaultTextLayerFactory.prototype = {
      createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport, enhanceTextSelection) {
       return new TextLayerBuilder({
        textLayerDiv: textLayerDiv,
        pageIndex: pageIndex,
        viewport: viewport,
        enhanceTextSelection: enhanceTextSelection
       });
      }
     };
     exports.TextLayerBuilder = TextLayerBuilder;
     exports.DefaultTextLayerFactory = DefaultTextLayerFactory;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebAnnotationLayerBuilder = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFLinkService, root.pdfjsWebPDFJS);
    }(this, function (exports, uiUtils, pdfLinkService, pdfjsLib) {
     var mozL10n = uiUtils.mozL10n;
     var SimpleLinkService = pdfLinkService.SimpleLinkService;
     var AnnotationLayerBuilder = function AnnotationLayerBuilderClosure() {
      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 = {
       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) {
          pdfjsLib.AnnotationLayer.update(parameters);
         } else {
          if (annotations.length === 0) {
           return;
          }
          self.div = document.createElement('div');
          self.div.className = 'annotationLayer';
          self.pageDiv.appendChild(self.div);
          parameters.div = self.div;
          pdfjsLib.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;
     }();
     function DefaultAnnotationLayerFactory() {
     }
     DefaultAnnotationLayerFactory.prototype = {
      createAnnotationLayerBuilder: function (pageDiv, pdfPage, renderInteractiveForms) {
       return new AnnotationLayerBuilder({
        pageDiv: pageDiv,
        pdfPage: pdfPage,
        renderInteractiveForms: renderInteractiveForms,
        linkService: new SimpleLinkService()
       });
      }
     };
     exports.AnnotationLayerBuilder = AnnotationLayerBuilder;
     exports.DefaultAnnotationLayerFactory = DefaultAnnotationLayerFactory;
    }));
    (function (root, factory) {
     factory(root.pdfjsWebPDFViewer = {}, root.pdfjsWebUIUtils, root.pdfjsWebPDFPageView, root.pdfjsWebPDFRenderingQueue, root.pdfjsWebTextLayerBuilder, root.pdfjsWebAnnotationLayerBuilder, root.pdfjsWebPDFLinkService, root.pdfjsWebDOMEvents, root.pdfjsWebPDFJS);
    }(this, function (exports, uiUtils, pdfPageView, pdfRenderingQueue, textLayerBuilder, annotationLayerBuilder, pdfLinkService, domEvents, pdfjsLib) {
     var UNKNOWN_SCALE = uiUtils.UNKNOWN_SCALE;
     var SCROLLBAR_PADDING = uiUtils.SCROLLBAR_PADDING;
     var VERTICAL_PADDING = uiUtils.VERTICAL_PADDING;
     var MAX_AUTO_SCALE = uiUtils.MAX_AUTO_SCALE;
     var CSS_UNITS = uiUtils.CSS_UNITS;
     var DEFAULT_SCALE = uiUtils.DEFAULT_SCALE;
     var DEFAULT_SCALE_VALUE = uiUtils.DEFAULT_SCALE_VALUE;
     var scrollIntoView = uiUtils.scrollIntoView;
     var watchScroll = uiUtils.watchScroll;
     var getVisibleElements = uiUtils.getVisibleElements;
     var PDFPageView = pdfPageView.PDFPageView;
     var RenderingStates = pdfRenderingQueue.RenderingStates;
     var PDFRenderingQueue = pdfRenderingQueue.PDFRenderingQueue;
     var TextLayerBuilder = textLayerBuilder.TextLayerBuilder;
     var AnnotationLayerBuilder = annotationLayerBuilder.AnnotationLayerBuilder;
     var SimpleLinkService = pdfLinkService.SimpleLinkService;
     var PresentationModeState = {
      UNKNOWN: 0,
      NORMAL: 1,
      CHANGING: 2,
      FULLSCREEN: 3
     };
     var DEFAULT_CACHE_SIZE = 10;
     var PDFViewer = function pdfViewer() {
      function PDFPageViewBuffer(size) {
       var data = [];
       this.push = function cachePush(view) {
        var i = data.indexOf(view);
        if (i >= 0) {
         data.splice(i, 1);
        }
        data.push(view);
        if (data.length > size) {
         data.shift().destroy();
        }
       };
       this.resize = function (newSize) {
        size = newSize;
        while (data.length > size) {
         data.shift().destroy();
        }
       };
      }
      function isSameScale(oldScale, newScale) {
       if (newScale === oldScale) {
        return true;
       }
       if (Math.abs(newScale - oldScale) < 1e-15) {
        return true;
       }
       return false;
      }
      function PDFViewer(options) {
       this.container = options.container;
       this.viewer = options.viewer || options.container.firstElementChild;
       this.eventBus = options.eventBus || domEvents.getGlobalEventBus();
       this.linkService = options.linkService || new SimpleLinkService();
       this.downloadManager = options.downloadManager || null;
       this.removePageBorders = options.removePageBorders || false;
       this.enhanceTextSelection = options.enhanceTextSelection || false;
       this.renderInteractiveForms = options.renderInteractiveForms || false;
       this.defaultRenderingQueue = !options.renderingQueue;
       if (this.defaultRenderingQueue) {
        this.renderingQueue = new PDFRenderingQueue();
        this.renderingQueue.setViewer(this);
       } else {
        this.renderingQueue = options.renderingQueue;
       }
       this.scroll = watchScroll(this.container, this._scrollUpdate.bind(this));
       this.presentationModeState = PresentationModeState.UNKNOWN;
       this._resetView();
       if (this.removePageBorders) {
        this.viewer.classList.add('removePageBorders');
       }
      }
      PDFViewer.prototype = {
       get pagesCount() {
        return this._pages.length;
       },
       getPageView: function (index) {
        return this._pages[index];
       },
       get pageViewsReady() {
        return this._pageViewsReady;
       },
       get currentPageNumber() {
        return this._currentPageNumber;
       },
       set currentPageNumber(val) {
        if ((val | 0) !== val) {
         throw new Error('Invalid page number.');
        }
        if (!this.pdfDocument) {
         this._currentPageNumber = val;
         return;
        }
        this._setCurrentPageNumber(val, true);
       },
       _setCurrentPageNumber: function PDFViewer_setCurrentPageNumber(val, resetCurrentPageView) {
        if (this._currentPageNumber === val) {
         if (resetCurrentPageView) {
          this._resetCurrentPageView();
         }
         return;
        }
        if (!(0 < val && val <= this.pagesCount)) {
         console.error('PDFViewer_setCurrentPageNumber: "' + val + '" is out of bounds.');
         return;
        }
        var arg = {
         source: this,
         pageNumber: val,
         pageLabel: this._pageLabels && this._pageLabels[val - 1]
        };
        this._currentPageNumber = val;
        this.eventBus.dispatch('pagechanging', arg);
        this.eventBus.dispatch('pagechange', arg);
        if (resetCurrentPageView) {
         this._resetCurrentPageView();
        }
       },
       get currentPageLabel() {
        return this._pageLabels && this._pageLabels[this._currentPageNumber - 1];
       },
       set currentPageLabel(val) {
        var pageNumber = val | 0;
        if (this._pageLabels) {
         var i = this._pageLabels.indexOf(val);
         if (i >= 0) {
          pageNumber = i + 1;
         }
        }
        this.currentPageNumber = pageNumber;
       },
       get currentScale() {
        return this._currentScale !== UNKNOWN_SCALE ? this._currentScale : DEFAULT_SCALE;
       },
       set currentScale(val) {
        if (isNaN(val)) {
         throw new Error('Invalid numeric scale');
        }
        if (!this.pdfDocument) {
         this._currentScale = val;
         this._currentScaleValue = val !== UNKNOWN_SCALE ? val.toString() : null;
         return;
        }
        this._setScale(val, false);
       },
       get currentScaleValue() {
        return this._currentScaleValue;
       },
       set currentScaleValue(val) {
        if (!this.pdfDocument) {
         this._currentScale = isNaN(val) ? UNKNOWN_SCALE : val;
         this._currentScaleValue = val.toString();
         return;
        }
        this._setScale(val, false);
       },
       get pagesRotation() {
        return this._pagesRotation;
       },
       set pagesRotation(rotation) {
        if (!(typeof rotation === 'number' && rotation % 90 === 0)) {
         throw new Error('Invalid pages rotation angle.');
        }
        this._pagesRotation = rotation;
        if (!this.pdfDocument) {
         return;
        }
        for (var i = 0, l = this._pages.length; i < l; i++) {
         var pageView = this._pages[i];
         pageView.update(pageView.scale, rotation);
        }
        this._setScale(this._currentScaleValue, true);
        if (this.defaultRenderingQueue) {
         this.update();
        }
       },
       setDocument: function (pdfDocument) {
        if (this.pdfDocument) {
         this._cancelRendering();
         this._resetView();
        }
        this.pdfDocument = pdfDocument;
        if (!pdfDocument) {
         return;
        }
        var pagesCount = pdfDocument.numPages;
        var self = this;
        var resolvePagesPromise;
        var pagesPromise = new Promise(function (resolve) {
         resolvePagesPromise = resolve;
        });
        this.pagesPromise = pagesPromise;
        pagesPromise.then(function () {
         self._pageViewsReady = true;
         self.eventBus.dispatch('pagesloaded', {
          source: self,
          pagesCount: pagesCount
         });
        });
        var isOnePageRenderedResolved = false;
        var resolveOnePageRendered = null;
        var onePageRendered = new Promise(function (resolve) {
         resolveOnePageRendered = resolve;
        });
        this.onePageRendered = onePageRendered;
        var bindOnAfterAndBeforeDraw = function (pageView) {
         pageView.onBeforeDraw = function pdfViewLoadOnBeforeDraw() {
          self._buffer.push(this);
         };
         pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
          if (!isOnePageRenderedResolved) {
           isOnePageRenderedResolved = true;
           resolveOnePageRendered();
          }
         };
        };
        var firstPagePromise = pdfDocument.getPage(1);
        this.firstPagePromise = firstPagePromise;
        return firstPagePromise.then(function (pdfPage) {
         var scale = this.currentScale;
         var viewport = pdfPage.getViewport(scale * CSS_UNITS);
         for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
          var textLayerFactory = null;
          if (!pdfjsLib.PDFJS.disableTextLayer) {
           textLayerFactory = this;
          }
          var pageView = new PDFPageView({
           container: this.viewer,
           eventBus: this.eventBus,
           id: pageNum,
           scale: scale,
           defaultViewport: viewport.clone(),
           renderingQueue: this.renderingQueue,
           textLayerFactory: textLayerFactory,
           annotationLayerFactory: this,
           enhanceTextSelection: this.enhanceTextSelection,
           renderInteractiveForms: this.renderInteractiveForms
          });
          bindOnAfterAndBeforeDraw(pageView);
          this._pages.push(pageView);
         }
         var linkService = this.linkService;
         onePageRendered.then(function () {
          if (!pdfjsLib.PDFJS.disableAutoFetch) {
           var getPagesLeft = pagesCount;
           for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
            pdfDocument.getPage(pageNum).then(function (pageNum, pdfPage) {
             var pageView = self._pages[pageNum - 1];
             if (!pageView.pdfPage) {
              pageView.setPdfPage(pdfPage);
             }
             linkService.cachePageRef(pageNum, pdfPage.ref);
             getPagesLeft--;
             if (!getPagesLeft) {
              resolvePagesPromise();
             }
            }.bind(null, pageNum));
           }
          } else {
           resolvePagesPromise();
          }
         });
         self.eventBus.dispatch('pagesinit', { source: self });
         if (this.defaultRenderingQueue) {
          this.update();
         }
         if (this.findController) {
          this.findController.resolveFirstPage();
         }
        }.bind(this));
       },
       setPageLabels: function PDFViewer_setPageLabels(labels) {
        if (!this.pdfDocument) {
         return;
        }
        if (!labels) {
         this._pageLabels = null;
        } else if (!(labels instanceof Array && this.pdfDocument.numPages === labels.length)) {
         this._pageLabels = null;
         console.error('PDFViewer_setPageLabels: Invalid page labels.');
        } else {
         this._pageLabels = labels;
        }
        for (var i = 0, ii = this._pages.length; i < ii; i++) {
         var pageView = this._pages[i];
         var label = this._pageLabels && this._pageLabels[i];
         pageView.setPageLabel(label);
        }
       },
       _resetView: function () {
        this._pages = [];
        this._currentPageNumber = 1;
        this._currentScale = UNKNOWN_SCALE;
        this._currentScaleValue = null;
        this._pageLabels = null;
        this._buffer = new PDFPageViewBuffer(DEFAULT_CACHE_SIZE);
        this._location = null;
        this._pagesRotation = 0;
        this._pagesRequests = [];
        this._pageViewsReady = false;
        this.viewer.textContent = '';
       },
       _scrollUpdate: function PDFViewer_scrollUpdate() {
        if (this.pagesCount === 0) {
         return;
        }
        this.update();
        for (var i = 0, ii = this._pages.length; i < ii; i++) {
         this._pages[i].updatePosition();
        }
       },
       _setScaleDispatchEvent: function pdfViewer_setScaleDispatchEvent(newScale, newValue, preset) {
        var arg = {
         source: this,
         scale: newScale,
         presetValue: preset ? newValue : undefined
        };
        this.eventBus.dispatch('scalechanging', arg);
        this.eventBus.dispatch('scalechange', arg);
       },
       _setScaleUpdatePages: function pdfViewer_setScaleUpdatePages(newScale, newValue, noScroll, preset) {
        this._currentScaleValue = newValue.toString();
        if (isSameScale(this._currentScale, newScale)) {
         if (preset) {
          this._setScaleDispatchEvent(newScale, newValue, true);
         }
         return;
        }
        for (var i = 0, ii = this._pages.length; i < ii; i++) {
         this._pages[i].update(newScale);
        }
        this._currentScale = newScale;
        if (!noScroll) {
         var page = this._currentPageNumber, dest;
         if (this._location && !pdfjsLib.PDFJS.ignoreCurrentPositionOnZoom && !(this.isInPresentationMode || this.isChangingPresentationMode)) {
          page = this._location.pageNumber;
          dest = [
           null,
           { name: 'XYZ' },
           this._location.left,
           this._location.top,
           null
          ];
         }
         this.scrollPageIntoView({
          pageNumber: page,
          destArray: dest,
          allowNegativeOffset: true
         });
        }
        this._setScaleDispatchEvent(newScale, newValue, preset);
        if (this.defaultRenderingQueue) {
         this.update();
        }
       },
       _setScale: function PDFViewer_setScale(value, noScroll) {
        var scale = parseFloat(value);
        if (scale > 0) {
         this._setScaleUpdatePages(scale, value, noScroll, false);
        } else {
         var currentPage = this._pages[this._currentPageNumber - 1];
         if (!currentPage) {
          return;
         }
         var hPadding = this.isInPresentationMode || this.removePageBorders ? 0 : SCROLLBAR_PADDING;
         var vPadding = this.isInPresentationMode || this.removePageBorders ? 0 : VERTICAL_PADDING;
         var pageWidthScale = (this.container.clientWidth - hPadding) / currentPage.width * currentPage.scale;
         var pageHeightScale = (this.container.clientHeight - vPadding) / currentPage.height * currentPage.scale;
         switch (value) {
         case 'page-actual':
          scale = 1;
          break;
         case 'page-width':
          scale = pageWidthScale;
          break;
         case 'page-height':
          scale = pageHeightScale;
          break;
         case 'page-fit':
          scale = Math.min(pageWidthScale, pageHeightScale);
          break;
         case 'auto':
          var isLandscape = currentPage.width > currentPage.height;
          var horizontalScale = isLandscape ? Math.min(pageHeightScale, pageWidthScale) : pageWidthScale;
          scale = Math.min(MAX_AUTO_SCALE, horizontalScale);
          break;
         default:
          console.error('PDFViewer_setScale: "' + value + '" is an unknown zoom value.');
          return;
         }
         this._setScaleUpdatePages(scale, value, noScroll, true);
        }
       },
       _resetCurrentPageView: function () {
        if (this.isInPresentationMode) {
         this._setScale(this._currentScaleValue, true);
        }
        var pageView = this._pages[this._currentPageNumber - 1];
        scrollIntoView(pageView.div);
       },
       scrollPageIntoView: function PDFViewer_scrollPageIntoView(params) {
        if (!this.pdfDocument) {
         return;
        }
        if (arguments.length > 1 || typeof params === 'number') {
         console.warn('Call of scrollPageIntoView() with obsolete signature.');
         var paramObj = {};
         if (typeof params === 'number') {
          paramObj.pageNumber = params;
         }
         if (arguments[1] instanceof Array) {
          paramObj.destArray = arguments[1];
         }
         params = paramObj;
        }
        var pageNumber = params.pageNumber || 0;
        var dest = params.destArray || null;
        var allowNegativeOffset = params.allowNegativeOffset || false;
        if (this.isInPresentationMode || !dest) {
         this._setCurrentPageNumber(pageNumber, true);
         return;
        }
        var pageView = this._pages[pageNumber - 1];
        if (!pageView) {
         console.error('PDFViewer_scrollPageIntoView: ' + 'Invalid "pageNumber" parameter.');
         return;
        }
        var x = 0, y = 0;
        var width = 0, height = 0, widthScale, heightScale;
        var changeOrientation = pageView.rotation % 180 === 0 ? false : true;
        var pageWidth = (changeOrientation ? pageView.height : pageView.width) / pageView.scale / CSS_UNITS;
        var pageHeight = (changeOrientation ? pageView.width : pageView.height) / pageView.scale / CSS_UNITS;
        var scale = 0;
        switch (dest[1].name) {
        case 'XYZ':
         x = dest[2];
         y = dest[3];
         scale = dest[4];
         x = x !== null ? x : 0;
         y = y !== null ? y : pageHeight;
         break;
        case 'Fit':
        case 'FitB':
         scale = 'page-fit';
         break;
        case 'FitH':
        case 'FitBH':
         y = dest[2];
         scale = 'page-width';
         if (y === null && this._location) {
          x = this._location.left;
          y = this._location.top;
         }
         break;
        case 'FitV':
        case 'FitBV':
         x = dest[2];
         width = pageWidth;
         height = pageHeight;
         scale = 'page-height';
         break;
        case 'FitR':
         x = dest[2];
         y = dest[3];
         width = dest[4] - x;
         height = dest[5] - y;
         var hPadding = this.removePageBorders ? 0 : SCROLLBAR_PADDING;
         var vPadding = this.removePageBorders ? 0 : VERTICAL_PADDING;
         widthScale = (this.container.clientWidth - hPadding) / width / CSS_UNITS;
         heightScale = (this.container.clientHeight - vPadding) / height / CSS_UNITS;
         scale = Math.min(Math.abs(widthScale), Math.abs(heightScale));
         break;
        default:
         console.error('PDFViewer_scrollPageIntoView: \'' + dest[1].name + '\' is not a valid destination type.');
         return;
        }
        if (scale && scale !== this._currentScale) {
         this.currentScaleValue = scale;
        } else if (this._currentScale === UNKNOWN_SCALE) {
         this.currentScaleValue = DEFAULT_SCALE_VALUE;
        }
        if (scale === 'page-fit' && !dest[4]) {
         scrollIntoView(pageView.div);
         return;
        }
        var boundingRect = [
         pageView.viewport.convertToViewportPoint(x, y),
         pageView.viewport.convertToViewportPoint(x + width, y + height)
        ];
        var left = Math.min(boundingRect[0][0], boundingRect[1][0]);
        var top = Math.min(boundingRect[0][1], boundingRect[1][1]);
        if (!allowNegativeOffset) {
         left = Math.max(left, 0);
         top = Math.max(top, 0);
        }
        scrollIntoView(pageView.div, {
         left: left,
         top: top
        });
       },
       _updateLocation: function (firstPage) {
        var currentScale = this._currentScale;
        var currentScaleValue = this._currentScaleValue;
        var normalizedScaleValue = parseFloat(currentScaleValue) === currentScale ? Math.round(currentScale * 10000) / 100 : currentScaleValue;
        var pageNumber = firstPage.id;
        var pdfOpenParams = '#page=' + pageNumber;
        pdfOpenParams += '&zoom=' + normalizedScaleValue;
        var currentPageView = this._pages[pageNumber - 1];
        var container = this.container;
        var topLeft = currentPageView.getPagePoint(container.scrollLeft - firstPage.x, container.scrollTop - firstPage.y);
        var intLeft = Math.round(topLeft[0]);
        var intTop = Math.round(topLeft[1]);
        pdfOpenParams += ',' + intLeft + ',' + intTop;
        this._location = {
         pageNumber: pageNumber,
         scale: normalizedScaleValue,
         top: intTop,
         left: intLeft,
         pdfOpenParams: pdfOpenParams
        };
       },
       update: function PDFViewer_update() {
        var visible = this._getVisiblePages();
        var visiblePages = visible.views;
        if (visiblePages.length === 0) {
         return;
        }
        var suggestedCacheSize = Math.max(DEFAULT_CACHE_SIZE, 2 * visiblePages.length + 1);
        this._buffer.resize(suggestedCacheSize);
        this.renderingQueue.renderHighestPriority(visible);
        var currentId = this._currentPageNumber;
        var firstPage = visible.first;
        for (var i = 0, ii = visiblePages.length, stillFullyVisible = false; i < ii; ++i) {
         var page = visiblePages[i];
         if (page.percent < 100) {
          break;
         }
         if (page.id === currentId) {
          stillFullyVisible = true;
          break;
         }
        }
        if (!stillFullyVisible) {
         currentId = visiblePages[0].id;
        }
        if (!this.isInPresentationMode) {
         this._setCurrentPageNumber(currentId);
        }
        this._updateLocation(firstPage);
        this.eventBus.dispatch('updateviewarea', {
         source: this,
         location: this._location
        });
       },
       containsElement: function (element) {
        return this.container.contains(element);
       },
       focus: function () {
        this.container.focus();
       },
       get isInPresentationMode() {
        return this.presentationModeState === PresentationModeState.FULLSCREEN;
       },
       get isChangingPresentationMode() {
        return this.presentationModeState === PresentationModeState.CHANGING;
       },
       get isHorizontalScrollbarEnabled() {
        return this.isInPresentationMode ? false : this.container.scrollWidth > this.container.clientWidth;
       },
       _getVisiblePages: function () {
        if (!this.isInPresentationMode) {
         return getVisibleElements(this.container, this._pages, true);
        } else {
         var visible = [];
         var currentPage = this._pages[this._currentPageNumber - 1];
         visible.push({
          id: currentPage.id,
          view: currentPage
         });
         return {
          first: currentPage,
          last: currentPage,
          views: visible
         };
        }
       },
       cleanup: function () {
        for (var i = 0, ii = this._pages.length; i < ii; i++) {
         if (this._pages[i] && this._pages[i].renderingState !== RenderingStates.FINISHED) {
          this._pages[i].reset();
         }
        }
       },
       _cancelRendering: function PDFViewer_cancelRendering() {
        for (var i = 0, ii = this._pages.length; i < ii; i++) {
         if (this._pages[i]) {
          this._pages[i].cancelRendering();
         }
        }
       },
       _ensurePdfPageLoaded: function (pageView) {
        if (pageView.pdfPage) {
         return Promise.resolve(pageView.pdfPage);
        }
        var pageNumber = pageView.id;
        if (this._pagesRequests[pageNumber]) {
         return this._pagesRequests[pageNumber];
        }
        var promise = this.pdfDocument.getPage(pageNumber).then(function (pdfPage) {
         pageView.setPdfPage(pdfPage);
         this._pagesRequests[pageNumber] = null;
         return pdfPage;
        }.bind(this));
        this._pagesRequests[pageNumber] = promise;
        return promise;
       },
       forceRendering: function (currentlyVisiblePages) {
        var visiblePages = currentlyVisiblePages || this._getVisiblePages();
        var pageView = this.renderingQueue.getHighestPriority(visiblePages, this._pages, this.scroll.down);
        if (pageView) {
         this._ensurePdfPageLoaded(pageView).then(function () {
          this.renderingQueue.renderView(pageView);
         }.bind(this));
         return true;
        }
        return false;
       },
       getPageTextContent: function (pageIndex) {
        return this.pdfDocument.getPage(pageIndex + 1).then(function (page) {
         return page.getTextContent({ normalizeWhitespace: true });
        });
       },
       createTextLayerBuilder: function (textLayerDiv, pageIndex, viewport, enhanceTextSelection) {
        return new TextLayerBuilder({
         textLayerDiv: textLayerDiv,
         eventBus: this.eventBus,
         pageIndex: pageIndex,
         viewport: viewport,
         findController: this.isInPresentationMode ? null : this.findController,
         enhanceTextSelection: this.isInPresentationMode ? false : enhanceTextSelection
        });
       },
       createAnnotationLayerBuilder: function (pageDiv, pdfPage, renderInteractiveForms) {
        return new AnnotationLayerBuilder({
         pageDiv: pageDiv,
         pdfPage: pdfPage,
         renderInteractiveForms: renderInteractiveForms,
         linkService: this.linkService,
         downloadManager: this.downloadManager
        });
       },
       setFindController: function (findController) {
        this.findController = findController;
       },
       getPagesOverview: function () {
        return this._pages.map(function (pageView) {
         var viewport = pageView.pdfPage.getViewport(1);
         return {
          width: viewport.width,
          height: viewport.height
         };
        });
       }
      };
      return PDFViewer;
     }();
     exports.PresentationModeState = PresentationModeState;
     exports.PDFViewer = PDFViewer;
    }));
   }.call(pdfViewerLibs));
   var PDFJS = pdfjsLib.PDFJS;
   PDFJS.PDFViewer = pdfViewerLibs.pdfjsWebPDFViewer.PDFViewer;
   PDFJS.PDFPageView = pdfViewerLibs.pdfjsWebPDFPageView.PDFPageView;
   PDFJS.PDFLinkService = pdfViewerLibs.pdfjsWebPDFLinkService.PDFLinkService;
   PDFJS.TextLayerBuilder = pdfViewerLibs.pdfjsWebTextLayerBuilder.TextLayerBuilder;
   PDFJS.DefaultTextLayerFactory = pdfViewerLibs.pdfjsWebTextLayerBuilder.DefaultTextLayerFactory;
   PDFJS.AnnotationLayerBuilder = pdfViewerLibs.pdfjsWebAnnotationLayerBuilder.AnnotationLayerBuilder;
   PDFJS.DefaultAnnotationLayerFactory = pdfViewerLibs.pdfjsWebAnnotationLayerBuilder.DefaultAnnotationLayerFactory;
   PDFJS.PDFHistory = pdfViewerLibs.pdfjsWebPDFHistory.PDFHistory;
   PDFJS.PDFFindController = pdfViewerLibs.pdfjsWebPDFFindController.PDFFindController;
   PDFJS.EventBus = pdfViewerLibs.pdfjsWebUIUtils.EventBus;
   PDFJS.DownloadManager = pdfViewerLibs.pdfjsWebDownloadManager.DownloadManager;
   PDFJS.ProgressBar = pdfViewerLibs.pdfjsWebUIUtils.ProgressBar;
   exports.PDFJS = PDFJS;
  }));