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Generic build of PDF.js library.
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pdfjs-dist/web/viewer.js

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/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set shiftwidth=2 tabstop=2 autoindent cindent expandtab: */
/* Copyright 2012 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.
*/
/* globals PDFJS, PDFBug, FirefoxCom, Stats, Cache, PDFFindBar, CustomStyle,
PDFFindController, ProgressBar, TextLayerBuilder, DownloadManager,
getFileName, getOutputScale, scrollIntoView, getPDFFileNameFromURL,
PDFHistory, Settings, PageView, ThumbnailView, noContextMenuHandler,
SecondaryToolbar, PasswordPrompt, PresentationMode */
'use strict';
var DEFAULT_URL = 'compressed.tracemonkey-pldi-09.pdf';
var DEFAULT_SCALE = 'auto';
var DEFAULT_SCALE_DELTA = 1.1;
var UNKNOWN_SCALE = 0;
var CACHE_SIZE = 20;
var CSS_UNITS = 96.0 / 72.0;
var SCROLLBAR_PADDING = 40;
var VERTICAL_PADDING = 5;
var MAX_AUTO_SCALE = 1.25;
var MIN_SCALE = 0.25;
var MAX_SCALE = 4.0;
var SETTINGS_MEMORY = 20;
var SCALE_SELECT_CONTAINER_PADDING = 8;
var SCALE_SELECT_PADDING = 22;
var THUMBNAIL_SCROLL_MARGIN = -19;
var USE_ONLY_CSS_ZOOM = false;
//#if B2G
//USE_ONLY_CSS_ZOOM = true;
//#endif
var RenderingStates = {
INITIAL: 0,
RUNNING: 1,
PAUSED: 2,
FINISHED: 3
};
var FindStates = {
FIND_FOUND: 0,
FIND_NOTFOUND: 1,
FIND_WRAPPED: 2,
FIND_PENDING: 3
};
PDFJS.imageResourcesPath = './images/';
//#if (FIREFOX || MOZCENTRAL || B2G || GENERIC || CHROME)
//PDFJS.workerSrc = '../build/pdf.worker.js';
//#endif
var mozL10n = document.mozL10n || document.webL10n;
//#include ui_utils.js
//#if !(FIREFOX || MOZCENTRAL || B2G)
//#include mozPrintCallback_polyfill.js
//#endif
//#if GENERIC || CHROME
//#include download_manager.js
//#endif
//#if FIREFOX || MOZCENTRAL
//#include firefoxcom.js
//#endif
var cache = new Cache(CACHE_SIZE);
var currentPageNumber = 1;
//#include settings.js
//#include pdf_find_bar.js
//#include pdf_find_controller.js
//#include pdf_history.js
//#include secondary_toolbar.js
//#include password_prompt.js
//#include presentation_mode.js
var PDFView = {
pages: [],
thumbnails: [],
currentScale: UNKNOWN_SCALE,
currentScaleValue: null,
initialBookmark: document.location.hash.substring(1),
container: null,
thumbnailContainer: null,
initialized: false,
fellback: false,
pdfDocument: null,
sidebarOpen: false,
pageViewScroll: null,
thumbnailViewScroll: null,
pageRotation: 0,
mouseScrollTimeStamp: 0,
mouseScrollDelta: 0,
lastScroll: 0,
previousPageNumber: 1,
isViewerEmbedded: (window.parent !== window),
// called once when the document is loaded
initialize: function pdfViewInitialize() {
var self = this;
var container = this.container = document.getElementById('viewerContainer');
this.pageViewScroll = {};
this.watchScroll(container, this.pageViewScroll, updateViewarea);
var thumbnailContainer = this.thumbnailContainer =
document.getElementById('thumbnailView');
this.thumbnailViewScroll = {};
this.watchScroll(thumbnailContainer, this.thumbnailViewScroll,
this.renderHighestPriority.bind(this));
PDFFindBar.initialize({
bar: document.getElementById('findbar'),
toggleButton: document.getElementById('viewFind'),
findField: document.getElementById('findInput'),
highlightAllCheckbox: document.getElementById('findHighlightAll'),
caseSensitiveCheckbox: document.getElementById('findMatchCase'),
findMsg: document.getElementById('findMsg'),
findStatusIcon: document.getElementById('findStatusIcon'),
findPreviousButton: document.getElementById('findPrevious'),
findNextButton: document.getElementById('findNext')
});
PDFFindController.initialize({
pdfPageSource: this,
integratedFind: this.supportsIntegratedFind
});
SecondaryToolbar.initialize({
toolbar: document.getElementById('secondaryToolbar'),
presentationMode: PresentationMode,
toggleButton: document.getElementById('secondaryToolbarToggle'),
presentationModeButton:
document.getElementById('secondaryPresentationMode'),
openFile: document.getElementById('secondaryOpenFile'),
print: document.getElementById('secondaryPrint'),
download: document.getElementById('secondaryDownload'),
firstPage: document.getElementById('firstPage'),
lastPage: document.getElementById('lastPage'),
pageRotateCw: document.getElementById('pageRotateCw'),
pageRotateCcw: document.getElementById('pageRotateCcw')
});
PasswordPrompt.initialize({
overlayContainer: document.getElementById('overlayContainer'),
passwordField: document.getElementById('password'),
passwordText: document.getElementById('passwordText'),
passwordSubmit: document.getElementById('passwordSubmit'),
passwordCancel: document.getElementById('passwordCancel')
});
PresentationMode.initialize({
container: container,
secondaryToolbar: SecondaryToolbar,
firstPage: document.getElementById('contextFirstPage'),
lastPage: document.getElementById('contextLastPage'),
pageRotateCw: document.getElementById('contextPageRotateCw'),
pageRotateCcw: document.getElementById('contextPageRotateCcw')
});
this.initialized = true;
container.addEventListener('scroll', function() {
self.lastScroll = Date.now();
}, false);
},
getPage: function pdfViewGetPage(n) {
return this.pdfDocument.getPage(n);
},
// Helper function to keep track whether a div was scrolled up or down and
// then call a callback.
watchScroll: function pdfViewWatchScroll(viewAreaElement, state, callback) {
state.down = true;
state.lastY = viewAreaElement.scrollTop;
viewAreaElement.addEventListener('scroll', function webViewerScroll(evt) {
var currentY = viewAreaElement.scrollTop;
var lastY = state.lastY;
if (currentY > lastY)
state.down = true;
else if (currentY < lastY)
state.down = false;
// else do nothing and use previous value
state.lastY = currentY;
callback();
}, true);
},
setScale: function pdfViewSetScale(value, resetAutoSettings, noScroll) {
if (value === 'custom') {
return;
}
var pages = this.pages;
var currentPage = pages[this.page - 1];
var number = parseFloat(value);
var scale;
if (number) {
scale = number;
resetAutoSettings = true;
} else {
if (!currentPage) {
return;
}
var pageWidthScale = (this.container.clientWidth - SCROLLBAR_PADDING) /
currentPage.width * currentPage.scale;
var pageHeightScale = (this.container.clientHeight - VERTICAL_PADDING) /
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':
scale = Math.min(MAX_AUTO_SCALE, pageWidthScale);
break;
}
}
this.currentScaleValue = value;
if (scale === this.currentScale) {
return;
}
for (var i = 0, ii = pages.length; i < ii; i++) {
pages[i].update(scale);
}
this.currentScale = scale;
if (!noScroll) {
currentPage.scrollIntoView();
}
var event = document.createEvent('UIEvents');
event.initUIEvent('scalechange', false, false, window, 0);
event.scale = scale;
event.resetAutoSettings = resetAutoSettings;
window.dispatchEvent(event);
if (!number) {
selectScaleOption(value);
}
},
zoomIn: function pdfViewZoomIn(ticks) {
var newScale = this.currentScale;
do {
newScale = (newScale * DEFAULT_SCALE_DELTA).toFixed(2);
newScale = Math.ceil(newScale * 10) / 10;
newScale = Math.min(MAX_SCALE, newScale);
} while (--ticks && newScale < MAX_SCALE);
this.setScale(newScale, true);
},
zoomOut: function pdfViewZoomOut(ticks) {
var newScale = this.currentScale;
do {
newScale = (newScale / DEFAULT_SCALE_DELTA).toFixed(2);
newScale = Math.floor(newScale * 10) / 10;
newScale = Math.max(MIN_SCALE, newScale);
} while (--ticks && newScale > MIN_SCALE);
this.setScale(newScale, true);
},
set page(val) {
var pages = this.pages;
var input = document.getElementById('pageNumber');
var event = document.createEvent('UIEvents');
event.initUIEvent('pagechange', false, false, window, 0);
if (!(0 < val && val <= pages.length)) {
this.previousPageNumber = val;
event.pageNumber = this.page;
window.dispatchEvent(event);
return;
}
pages[val - 1].updateStats();
this.previousPageNumber = currentPageNumber;
currentPageNumber = val;
event.pageNumber = val;
window.dispatchEvent(event);
// checking if the this.page was called from the updateViewarea function:
// avoiding the creation of two "set page" method (internal and public)
if (updateViewarea.inProgress)
return;
// Avoid scrolling the first page during loading
if (this.loading && val == 1)
return;
pages[val - 1].scrollIntoView();
},
get page() {
return currentPageNumber;
},
get supportsPrinting() {
var canvas = document.createElement('canvas');
var value = 'mozPrintCallback' in canvas;
// shadow
Object.defineProperty(this, 'supportsPrinting', { value: value,
enumerable: true,
configurable: true,
writable: false });
return value;
},
get supportsFullscreen() {
var doc = document.documentElement;
var support = doc.requestFullscreen || doc.mozRequestFullScreen ||
doc.webkitRequestFullScreen || doc.msRequestFullscreen;
if (document.fullscreenEnabled === false ||
document.mozFullScreenEnabled === false ||
document.webkitFullscreenEnabled === false ||
document.msFullscreenEnabled === false) {
support = false;
} else if (this.isViewerEmbedded) {
// Need to check if the viewer is embedded as well, to prevent issues with
// presentation mode when the viewer is embedded in '<object>' tags.
support = false;
}
Object.defineProperty(this, 'supportsFullscreen', { value: support,
enumerable: true,
configurable: true,
writable: false });
return support;
},
get supportsIntegratedFind() {
var support = false;
//#if !(FIREFOX || MOZCENTRAL)
//#else
// support = FirefoxCom.requestSync('supportsIntegratedFind');
//#endif
Object.defineProperty(this, 'supportsIntegratedFind', { value: support,
enumerable: true,
configurable: true,
writable: false });
return support;
},
get supportsDocumentFonts() {
var support = true;
//#if !(FIREFOX || MOZCENTRAL)
//#else
// support = FirefoxCom.requestSync('supportsDocumentFonts');
//#endif
Object.defineProperty(this, 'supportsDocumentFonts', { value: support,
enumerable: true,
configurable: true,
writable: false });
return support;
},
get supportsDocumentColors() {
var support = true;
//#if !(FIREFOX || MOZCENTRAL)
//#else
// support = FirefoxCom.requestSync('supportsDocumentColors');
//#endif
Object.defineProperty(this, 'supportsDocumentColors', { value: support,
enumerable: true,
configurable: true,
writable: false });
return support;
},
get loadingBar() {
var bar = new ProgressBar('#loadingBar', {});
Object.defineProperty(this, 'loadingBar', { value: bar,
enumerable: true,
configurable: true,
writable: false });
return bar;
},
get isHorizontalScrollbarEnabled() {
return (PresentationMode.active ? false :
(this.container.scrollWidth > this.container.clientWidth));
},
initPassiveLoading: function pdfViewInitPassiveLoading() {
var pdfDataRangeTransport = {
rangeListeners: [],
progressListeners: [],
addRangeListener: function PdfDataRangeTransport_addRangeListener(
listener) {
this.rangeListeners.push(listener);
},
addProgressListener: function PdfDataRangeTransport_addProgressListener(
listener) {
this.progressListeners.push(listener);
},
onDataRange: function PdfDataRangeTransport_onDataRange(begin, chunk) {
var listeners = this.rangeListeners;
for (var i = 0, n = listeners.length; i < n; ++i) {
listeners[i](begin, chunk);
}
},
onDataProgress: function PdfDataRangeTransport_onDataProgress(loaded) {
var listeners = this.progressListeners;
for (var i = 0, n = listeners.length; i < n; ++i) {
listeners[i](loaded);
}
},
requestDataRange: function PdfDataRangeTransport_requestDataRange(
begin, end) {
FirefoxCom.request('requestDataRange', { begin: begin, end: end });
}
};
window.addEventListener('message', function windowMessage(e) {
var args = e.data;
if (typeof args !== 'object' || !('pdfjsLoadAction' in args))
return;
switch (args.pdfjsLoadAction) {
case 'supportsRangedLoading':
PDFView.open(args.pdfUrl, 0, undefined, pdfDataRangeTransport, {
length: args.length
});
break;
case 'range':
pdfDataRangeTransport.onDataRange(args.begin, args.chunk);
break;
case 'rangeProgress':
pdfDataRangeTransport.onDataProgress(args.loaded);
break;
case 'progress':
PDFView.progress(args.loaded / args.total);
break;
case 'complete':
if (!args.data) {
PDFView.error(mozL10n.get('loading_error', null,
'An error occurred while loading the PDF.'), e);
break;
}
PDFView.open(args.data, 0);
break;
}
});
FirefoxCom.requestSync('initPassiveLoading', null);
},
setTitleUsingUrl: function pdfViewSetTitleUsingUrl(url) {
this.url = url;
try {
this.setTitle(decodeURIComponent(getFileName(url)) || url);
} catch (e) {
// decodeURIComponent may throw URIError,
// fall back to using the unprocessed url in that case
this.setTitle(url);
}
},
setTitle: function pdfViewSetTitle(title) {
document.title = title;
//#if B2G
// document.getElementById('activityTitle').textContent = title;
//#endif
},
// TODO(mack): This function signature should really be pdfViewOpen(url, args)
open: function pdfViewOpen(url, scale, password,
pdfDataRangeTransport, args) {
var parameters = {password: password};
if (typeof url === 'string') { // URL
this.setTitleUsingUrl(url);
parameters.url = url;
} else if (url && 'byteLength' in url) { // ArrayBuffer
parameters.data = url;
}
if (args) {
for (var prop in args) {
parameters[prop] = args[prop];
}
}
this.pdfDocument = null;
var self = this;
self.loading = true;
var passwordNeeded = function passwordNeeded(updatePassword, reason) {
PasswordPrompt.updatePassword = updatePassword;
PasswordPrompt.reason = reason;
PasswordPrompt.show();
};
function getDocumentProgress(progressData) {
self.progress(progressData.loaded / progressData.total);
}
PDFJS.getDocument(parameters, pdfDataRangeTransport, passwordNeeded,
getDocumentProgress).then(
function getDocumentCallback(pdfDocument) {
self.load(pdfDocument, scale);
self.loading = false;
},
function getDocumentError(message, exception) {
var loadingErrorMessage = mozL10n.get('loading_error', null,
'An error occurred while loading the PDF.');
if (exception && exception.name === 'InvalidPDFException') {
// change error message also for other builds
var loadingErrorMessage = mozL10n.get('invalid_file_error', null,
'Invalid or corrupted PDF file.');
//#if B2G
// window.alert(loadingErrorMessage);
// return window.close();
//#endif
}
if (exception && exception.name === 'MissingPDFException') {
// special message for missing PDF's
var loadingErrorMessage = mozL10n.get('missing_file_error', null,
'Missing PDF file.');
//#if B2G
// window.alert(loadingErrorMessage);
// return window.close();
//#endif
}
var moreInfo = {
message: message
};
self.error(loadingErrorMessage, moreInfo);
self.loading = false;
}
);
},
download: function pdfViewDownload() {
function noData() {
downloadManager.downloadUrl(url, filename);
}
var url = this.url.split('#')[0];
var filename = getPDFFileNameFromURL(url);
var downloadManager = new DownloadManager();
downloadManager.onerror = function (err) {
// This error won't really be helpful because it's likely the
// fallback won't work either (or is already open).
PDFView.error('PDF failed to download.');
};
if (!this.pdfDocument) { // the PDF is not ready yet
noData();
return;
}
this.pdfDocument.getData().then(
function getDataSuccess(data) {
var blob = PDFJS.createBlob(data, 'application/pdf');
downloadManager.download(blob, url, filename);
},
noData // Error occurred try downloading with just the url.
).then(null, noData);
},
fallback: function pdfViewFallback() {
//#if !(FIREFOX || MOZCENTRAL)
// return;
//#else
// // Only trigger the fallback once so we don't spam the user with messages
// // for one PDF.
// if (this.fellback)
// return;
// this.fellback = true;
// var url = this.url.split('#')[0];
// FirefoxCom.request('fallback', url, function response(download) {
// if (!download)
// return;
// PDFView.download();
// });
//#endif
},
navigateTo: function pdfViewNavigateTo(dest) {
var destString = '';
var self = this;
var goToDestination = function(destRef) {
self.pendingRefStr = null;
// dest array looks like that: <page-ref> </XYZ|FitXXX> <args..>
var pageNumber = destRef instanceof Object ?
self.pagesRefMap[destRef.num + ' ' + destRef.gen + ' R'] :
(destRef + 1);
if (pageNumber) {
if (pageNumber > self.pages.length) {
pageNumber = self.pages.length;
}
var currentPage = self.pages[pageNumber - 1];
currentPage.scrollIntoView(dest);
// Update the browsing history.
PDFHistory.push({ dest: dest, hash: destString, page: pageNumber });
} else {
self.pdfDocument.getPageIndex(destRef).then(function (pageIndex) {
var pageNum = pageIndex + 1;
self.pagesRefMap[destRef.num + ' ' + destRef.gen + ' R'] = pageNum;
goToDestination(destRef);
});
}
};
this.destinationsPromise.then(function() {
if (typeof dest === 'string') {
destString = dest;
dest = self.destinations[dest];
}
if (!(dest instanceof Array)) {
return; // invalid destination
}
goToDestination(dest[0]);
});
},
getDestinationHash: function pdfViewGetDestinationHash(dest) {
if (typeof dest === 'string')
return PDFView.getAnchorUrl('#' + escape(dest));
if (dest instanceof Array) {
var destRef = dest[0]; // see navigateTo method for dest format
var pageNumber = destRef instanceof Object ?
this.pagesRefMap[destRef.num + ' ' + destRef.gen + ' R'] :
(destRef + 1);
if (pageNumber) {
var pdfOpenParams = PDFView.getAnchorUrl('#page=' + pageNumber);
var destKind = dest[1];
if (typeof destKind === 'object' && 'name' in destKind &&
destKind.name == 'XYZ') {
var scale = (dest[4] || this.currentScaleValue);
var scaleNumber = parseFloat(scale);
if (scaleNumber) {
scale = scaleNumber * 100;
}
pdfOpenParams += '&zoom=' + scale;
if (dest[2] || dest[3]) {
pdfOpenParams += ',' + (dest[2] || 0) + ',' + (dest[3] || 0);
}
}
return pdfOpenParams;
}
}
return '';
},
/**
* Prefix the full url on anchor links to make sure that links are resolved
* relative to the current URL instead of the one defined in <base href>.
* @param {String} anchor The anchor hash, including the #.
*/
getAnchorUrl: function getAnchorUrl(anchor) {
//#if (GENERIC || B2G)
return anchor;
//#endif
//#if (FIREFOX || MOZCENTRAL)
// return this.url.split('#')[0] + anchor;
//#endif
//#if CHROME
// return location.href.split('#')[0] + anchor;
//#endif
},
/**
* Show the error box.
* @param {String} message A message that is human readable.
* @param {Object} moreInfo (optional) Further information about the error
* that is more technical. Should have a 'message'
* and optionally a 'stack' property.
*/
error: function pdfViewError(message, moreInfo) {
var moreInfoText = mozL10n.get('error_version_info',
{version: PDFJS.version || '?', build: PDFJS.build || '?'},
'PDF.js v{{version}} (build: {{build}})') + '\n';
if (moreInfo) {
moreInfoText +=
mozL10n.get('error_message', {message: moreInfo.message},
'Message: {{message}}');
if (moreInfo.stack) {
moreInfoText += '\n' +
mozL10n.get('error_stack', {stack: moreInfo.stack},
'Stack: {{stack}}');
} else {
if (moreInfo.filename) {
moreInfoText += '\n' +
mozL10n.get('error_file', {file: moreInfo.filename},
'File: {{file}}');
}
if (moreInfo.lineNumber) {
moreInfoText += '\n' +
mozL10n.get('error_line', {line: moreInfo.lineNumber},
'Line: {{line}}');
}
}
}
//#if !(FIREFOX || MOZCENTRAL)
var errorWrapper = document.getElementById('errorWrapper');
errorWrapper.removeAttribute('hidden');
var errorMessage = document.getElementById('errorMessage');
errorMessage.textContent = message;
var closeButton = document.getElementById('errorClose');
closeButton.onclick = function() {
errorWrapper.setAttribute('hidden', 'true');
};
var errorMoreInfo = document.getElementById('errorMoreInfo');
var moreInfoButton = document.getElementById('errorShowMore');
var lessInfoButton = document.getElementById('errorShowLess');
moreInfoButton.onclick = function() {
errorMoreInfo.removeAttribute('hidden');
moreInfoButton.setAttribute('hidden', 'true');
lessInfoButton.removeAttribute('hidden');
errorMoreInfo.style.height = errorMoreInfo.scrollHeight + 'px';
};
lessInfoButton.onclick = function() {
errorMoreInfo.setAttribute('hidden', 'true');
moreInfoButton.removeAttribute('hidden');
lessInfoButton.setAttribute('hidden', 'true');
};
moreInfoButton.oncontextmenu = noContextMenuHandler;
lessInfoButton.oncontextmenu = noContextMenuHandler;
closeButton.oncontextmenu = noContextMenuHandler;
moreInfoButton.removeAttribute('hidden');
lessInfoButton.setAttribute('hidden', 'true');
errorMoreInfo.value = moreInfoText;
//#else
// console.error(message + '\n' + moreInfoText);
// this.fallback();
//#endif
},
progress: function pdfViewProgress(level) {
var percent = Math.round(level * 100);
// When we transition from full request to range requests, it's possible
// that we discard some of the loaded data. This can cause the loading
// bar to move backwards. So prevent this by only updating the bar if it
// increases.
if (percent > PDFView.loadingBar.percent) {
PDFView.loadingBar.percent = percent;
}
},
load: function pdfViewLoad(pdfDocument, scale) {
function bindOnAfterDraw(pageView, thumbnailView) {
// when page is painted, using the image as thumbnail base
pageView.onAfterDraw = function pdfViewLoadOnAfterDraw() {
thumbnailView.setImage(pageView.canvas);
};
}
PDFFindController.reset();
this.pdfDocument = pdfDocument;
var errorWrapper = document.getElementById('errorWrapper');
errorWrapper.setAttribute('hidden', 'true');
pdfDocument.dataLoaded().then(function() {
PDFView.loadingBar.hide();
var outerContainer = document.getElementById('outerContainer');
outerContainer.classList.remove('loadingInProgress');
});
var thumbsView = document.getElementById('thumbnailView');
thumbsView.parentNode.scrollTop = 0;
while (thumbsView.hasChildNodes())
thumbsView.removeChild(thumbsView.lastChild);
if ('_loadingInterval' in thumbsView)
clearInterval(thumbsView._loadingInterval);
var container = document.getElementById('viewer');
while (container.hasChildNodes())
container.removeChild(container.lastChild);
var pagesCount = pdfDocument.numPages;
var id = pdfDocument.fingerprint;
document.getElementById('numPages').textContent =
mozL10n.get('page_of', {pageCount: pagesCount}, 'of {{pageCount}}');
document.getElementById('pageNumber').max = pagesCount;
PDFView.documentFingerprint = id;
var store = PDFView.store = new Settings(id);
this.pageRotation = 0;
var pages = this.pages = [];
var pagesRefMap = this.pagesRefMap = {};
var thumbnails = this.thumbnails = [];
var pagesPromise = this.pagesPromise = new PDFJS.Promise();
var self = this;
var firstPagePromise = pdfDocument.getPage(1);
// Fetch a single page so we can get a viewport that will be the default
// viewport for all pages
firstPagePromise.then(function(pdfPage) {
var viewport = pdfPage.getViewport((scale || 1.0) * CSS_UNITS);
var pagePromises = [];
for (var pageNum = 1; pageNum <= pagesCount; ++pageNum) {
var viewportClone = viewport.clone();
var pageView = new PageView(container, pageNum, scale,
self.navigateTo.bind(self),
viewportClone);
var thumbnailView = new ThumbnailView(thumbsView, pageNum,
viewportClone);
bindOnAfterDraw(pageView, thumbnailView);
pages.push(pageView);
thumbnails.push(thumbnailView);
}
var event = document.createEvent('CustomEvent');
event.initCustomEvent('documentload', true, true, {});
window.dispatchEvent(event);
PDFView.loadingBar.setWidth(container);
PDFFindController.firstPagePromise.resolve();
PDFJS.Promise.all(pagePromises).then(function(pages) {
pagesPromise.resolve(pages);
});
});
var storePromise = store.initializedPromise;
PDFJS.Promise.all([firstPagePromise, storePromise]).then(function() {
var storedHash = null;
if (store.get('exists', false)) {
var pageNum = store.get('page', '1');
var zoom = store.get('zoom', PDFView.currentScale);
var left = store.get('scrollLeft', '0');
var top = store.get('scrollTop', '0');
storedHash = 'page=' + pageNum + '&zoom=' + zoom + ',' +
left + ',' + top;
}
// Initialize the browsing history.
PDFHistory.initialize(self.documentFingerprint);
self.setInitialView(storedHash, scale);
// Make all navigation keys work on document load,
// unless the viewer is embedded in a web page.
if (!self.isViewerEmbedded) {
self.container.focus();
//#if (FIREFOX || MOZCENTRAL)
// self.container.blur();
//#endif
}
});
pagesPromise.then(function() {
if (PDFView.supportsPrinting) {
pdfDocument.getJavaScript().then(function(javaScript) {
if (javaScript.length) {
console.warn('Warning: JavaScript is not supported');
PDFView.fallback();
}
// Hack to support auto printing.
var regex = /\bprint\s*\(/g;
for (var i = 0, ii = javaScript.length; i < ii; i++) {
var js = javaScript[i];
if (js && regex.test(js)) {
setTimeout(function() {
window.print();
});
return;
}
}
});
}
});
var destinationsPromise =
this.destinationsPromise = pdfDocument.getDestinations();
destinationsPromise.then(function(destinations) {
self.destinations = destinations;
});
// outline depends on destinations and pagesRefMap
var promises = [pagesPromise, destinationsPromise,
PDFView.animationStartedPromise];
PDFJS.Promise.all(promises).then(function() {
pdfDocument.getOutline().then(function(outline) {
self.outline = new DocumentOutlineView(outline);
document.getElementById('viewOutline').disabled = !outline;
});
});
pdfDocument.getMetadata().then(function(data) {
var info = data.info, metadata = data.metadata;
self.documentInfo = info;
self.metadata = metadata;
// Provides some basic debug information
console.log('PDF ' + pdfDocument.fingerprint + ' [' +
info.PDFFormatVersion + ' ' + (info.Producer || '-') +
' / ' + (info.Creator || '-') + ']' +
(PDFJS.version ? ' (PDF.js: ' + PDFJS.version + ')' : ''));
var pdfTitle;
if (metadata) {
if (metadata.has('dc:title'))
pdfTitle = metadata.get('dc:title');
}
if (!pdfTitle && info && info['Title'])
pdfTitle = info['Title'];
if (pdfTitle)
self.setTitle(pdfTitle + ' - ' + document.title);
if (info.IsAcroFormPresent) {
console.warn('Warning: AcroForm/XFA is not supported');
PDFView.fallback();
}
//#if (FIREFOX || MOZCENTRAL)
// var versionId = String(info.PDFFormatVersion).slice(-1) | 0;
// var generatorId = 0;
// var KNOWN_GENERATORS = ["acrobat distiller", "acrobat pdfwritter",
// "adobe livecycle", "adobe pdf library", "adobe photoshop", "ghostscript",
// "tcpdf", "cairo", "dvipdfm", "dvips", "pdftex", "pdfkit", "itext",
// "prince", "quarkxpress", "mac os x", "microsoft", "openoffice", "oracle",
// "luradocument", "pdf-xchange", "antenna house", "aspose.cells", "fpdf"];
// var generatorId = 0;
// if (info.Producer) {
// KNOWN_GENERATORS.some(function (generator, s, i) {
// if (generator.indexOf(s) < 0) {
// return false;
// }
// generatorId = i + 1;
// return true;
// }.bind(null, info.Producer.toLowerCase()));
// }
// var formType = !info.IsAcroFormPresent ? null : info.IsXFAPresent ?
// 'xfa' : 'acroform';
// FirefoxCom.request('reportTelemetry', JSON.stringify({
// type: 'documentInfo',
// version: versionId,
// generator: generatorId,
// formType: formType
// }));
//#endif
});
},
setInitialView: function pdfViewSetInitialView(storedHash, scale) {
// Reset the current scale, as otherwise the page's scale might not get
// updated if the zoom level stayed the same.
this.currentScale = 0;
this.currentScaleValue = null;
// When opening a new file (when one is already loaded in the viewer):
// Reset 'currentPageNumber', since otherwise the page's scale will be wrong
// if 'currentPageNumber' is larger than the number of pages in the file.
document.getElementById('pageNumber').value = currentPageNumber = 1;
if (PDFHistory.initialDestination) {
this.navigateTo(PDFHistory.initialDestination);
PDFHistory.initialDestination = null;
} else if (this.initialBookmark) {
this.setHash(this.initialBookmark);
PDFHistory.push({ hash: this.initialBookmark }, !!this.initialBookmark);
this.initialBookmark = null;
} else if (storedHash) {
this.setHash(storedHash);
} else if (scale) {
this.setScale(scale, true);
this.page = 1;
}
if (PDFView.currentScale === UNKNOWN_SCALE) {
// Scale was not initialized: invalid bookmark or scale was not specified.
// Setting the default one.
this.setScale(DEFAULT_SCALE, true);
}
},
renderHighestPriority: function pdfViewRenderHighestPriority() {
// Pages have a higher priority than thumbnails, so check them first.
var visiblePages = this.getVisiblePages();
var pageView = this.getHighestPriority(visiblePages, this.pages,
this.pageViewScroll.down);
if (pageView) {
this.renderView(pageView, 'page');
return;
}
// No pages needed rendering so check thumbnails.
if (this.sidebarOpen) {
var visibleThumbs = this.getVisibleThumbs();
var thumbView = this.getHighestPriority(visibleThumbs,
this.thumbnails,
this.thumbnailViewScroll.down);
if (thumbView)
this.renderView(thumbView, 'thumbnail');
}
},
getHighestPriority: function pdfViewGetHighestPriority(visible, views,
scrolledDown) {
// The state has changed figure out which page has the highest priority to
// render next (if any).
// Priority:
// 1 visible pages
// 2 if last scrolled down page after the visible pages
// 2 if last scrolled up page before the visible pages
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;
}
// All the visible views have rendered, try to render next/previous pages.
if (scrolledDown) {
var nextPageIndex = visible.last.id;
// ID's start at 1 so no need to add 1.
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];
}
// Everything that needs to be rendered has been.
return false;
},
isViewFinished: function pdfViewNeedsRendering(view) {
return view.renderingState === RenderingStates.FINISHED;
},
// Render a page or thumbnail view. This calls the appropriate function based
// on the views state. If the view is already rendered it will return false.
renderView: function pdfViewRender(view, type) {
var state = view.renderingState;
switch (state) {
case RenderingStates.FINISHED:
return false;
case RenderingStates.PAUSED:
PDFView.highestPriorityPage = type + view.id;
view.resume();
break;
case RenderingStates.RUNNING:
PDFView.highestPriorityPage = type + view.id;
break;
case RenderingStates.INITIAL:
PDFView.highestPriorityPage = type + view.id;
view.draw(this.renderHighestPriority.bind(this));
break;
}
return true;
},
setHash: function pdfViewSetHash(hash) {
if (!hash)
return;
if (hash.indexOf('=') >= 0) {
var params = PDFView.parseQueryString(hash);
// borrowing syntax from "Parameters for Opening PDF Files"
if ('nameddest' in params) {
PDFHistory.updateNextHashParam(params.nameddest);
PDFView.navigateTo(params.nameddest);
return;
}
var pageNumber, dest;
if ('page' in params) {
pageNumber = (params.page | 0) || 1;
}
if ('zoom' in params) {
var zoomArgs = params.zoom.split(','); // scale,left,top
// building destination array
// If the zoom value, it has to get divided by 100. If it is a string,
// it should stay as it is.
var zoomArg = zoomArgs[0];
var zoomArgNumber = parseFloat(zoomArg);
if (zoomArgNumber) {
zoomArg = zoomArgNumber / 100;
}
dest = [null, {name: 'XYZ'},
zoomArgs.length > 1 ? (zoomArgs[1] | 0) : null,
zoomArgs.length > 2 ? (zoomArgs[2] | 0) : null,
zoomArg];
}
if (dest) {
var currentPage = this.pages[(pageNumber || this.page) - 1];
currentPage.scrollIntoView(dest);
} else if (pageNumber) {
this.page = pageNumber; // simple page
}
if ('pagemode' in params) {
var toggle = document.getElementById('sidebarToggle');
if (params.pagemode === 'thumbs' || params.pagemode === 'bookmarks') {
if (!this.sidebarOpen) {
toggle.click();
}
this.switchSidebarView(params.pagemode === 'thumbs' ?
'thumbs' : 'outline');
} else if (params.pagemode === 'none' && this.sidebarOpen) {
toggle.click();
}
}
} else if (/^\d+$/.test(hash)) { // page number
this.page = hash;
} else { // named destination
PDFHistory.updateNextHashParam(unescape(hash));
PDFView.navigateTo(unescape(hash));
}
},
switchSidebarView: function pdfViewSwitchSidebarView(view) {
var thumbsView = document.getElementById('thumbnailView');
var outlineView = document.getElementById('outlineView');
var thumbsButton = document.getElementById('viewThumbnail');
var outlineButton = document.getElementById('viewOutline');
switch (view) {
case 'thumbs':
var wasOutlineViewVisible = thumbsView.classList.contains('hidden');
thumbsButton.classList.add('toggled');
outlineButton.classList.remove('toggled');
thumbsView.classList.remove('hidden');
outlineView.classList.add('hidden');
PDFView.renderHighestPriority();
if (wasOutlineViewVisible) {
// Ensure that the thumbnail of the current page is visible
// when switching from the outline view.
scrollIntoView(document.getElementById('thumbnailContainer' +
this.page));
}
break;
case 'outline':
thumbsButton.classList.remove('toggled');
outlineButton.classList.add('toggled');
thumbsView.classList.add('hidden');
outlineView.classList.remove('hidden');
if (outlineButton.getAttribute('disabled'))
return;
break;
}
},
getVisiblePages: function pdfViewGetVisiblePages() {
return this.getVisibleElements(this.container, this.pages,
!PresentationMode.active);
},
getVisibleThumbs: function pdfViewGetVisibleThumbs() {
return this.getVisibleElements(this.thumbnailContainer, this.thumbnails);
},
// Generic helper to find out what elements are visible within a scroll pane.
getVisibleElements: function pdfViewGetVisibleElements(
scrollEl, views, sortByVisibility) {
var top = scrollEl.scrollTop, bottom = top + scrollEl.clientHeight;
var left = scrollEl.scrollLeft, right = left + scrollEl.clientWidth;
var visible = [], view;
var currentHeight, viewHeight, hiddenHeight, percentHeight;
var currentWidth, viewWidth;
for (var i = 0, ii = views.length; i < ii; ++i) {
view = views[i];
currentHeight = view.el.offsetTop + view.el.clientTop;
viewHeight = view.el.clientHeight;
if ((currentHeight + viewHeight) < top) {
continue;
}
if (currentHeight > bottom) {
break;
}
currentWidth = view.el.offsetLeft + view.el.clientLeft;
viewWidth = view.el.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, 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; // ensure stability
});
}
return {first: first, last: last, views: visible};
},
// Helper function to parse query string (e.g. ?param1=value&parm2=...).
parseQueryString: function pdfViewParseQueryString(query) {
var parts = query.split('&');
var params = {};
for (var i = 0, ii = parts.length; i < parts.length; ++i) {
var param = parts[i].split('=');
var key = param[0];
var value = param.length > 1 ? param[1] : null;
params[decodeURIComponent(key)] = decodeURIComponent(value);
}
return params;
},
beforePrint: function pdfViewSetupBeforePrint() {
if (!this.supportsPrinting) {
var printMessage = mozL10n.get('printing_not_supported', null,
'Warning: Printing is not fully supported by this browser.');
this.error(printMessage);
return;
}
var alertNotReady = false;
if (!this.pages.length) {
alertNotReady = true;
} else {
for (var i = 0, ii = this.pages.length; i < ii; ++i) {
if (!this.pages[i].pdfPage) {
alertNotReady = true;
break;
}
}
}
if (alertNotReady) {
var notReadyMessage = mozL10n.get('printing_not_ready', null,
'Warning: The PDF is not fully loaded for printing.');
window.alert(notReadyMessage);
return;
}
var body = document.querySelector('body');
body.setAttribute('data-mozPrintCallback', true);
for (var i = 0, ii = this.pages.length; i < ii; ++i) {
this.pages[i].beforePrint();
}
},
afterPrint: function pdfViewSetupAfterPrint() {
var div = document.getElementById('printContainer');
while (div.hasChildNodes())
div.removeChild(div.lastChild);
},
rotatePages: function pdfViewPageRotation(delta) {
this.pageRotation = (this.pageRotation + 360 + delta) % 360;
for (var i = 0, l = this.pages.length; i < l; i++) {
var page = this.pages[i];
page.update(page.scale, this.pageRotation);
}
for (var i = 0, l = this.thumbnails.length; i < l; i++) {
var thumb = this.thumbnails[i];
thumb.update(this.pageRotation);
}
this.setScale(this.currentScaleValue, true);
this.renderHighestPriority();
var currentPage = this.pages[this.page - 1];
if (!currentPage) {
return;
}
// Wait for presentation mode to take effect
setTimeout(function() {
currentPage.scrollIntoView();
}, 0);
},
/**
* This function flips the page in presentation mode if the user scrolls up
* or down with large enough motion and prevents page flipping too often.
*
* @this {PDFView}
* @param {number} mouseScrollDelta The delta value from the mouse event.
*/
mouseScroll: function pdfViewMouseScroll(mouseScrollDelta) {
var MOUSE_SCROLL_COOLDOWN_TIME = 50;
var currentTime = (new Date()).getTime();
var storedTime = this.mouseScrollTimeStamp;
// In case one page has already been flipped there is a cooldown time
// which has to expire before next page can be scrolled on to.
if (currentTime > storedTime &&
currentTime - storedTime < MOUSE_SCROLL_COOLDOWN_TIME)
return;
// In case the user decides to scroll to the opposite direction than before
// clear the accumulated delta.
if ((this.mouseScrollDelta > 0 && mouseScrollDelta < 0) ||
(this.mouseScrollDelta < 0 && mouseScrollDelta > 0))
this.clearMouseScrollState();
this.mouseScrollDelta += mouseScrollDelta;
var PAGE_FLIP_THRESHOLD = 120;
if (Math.abs(this.mouseScrollDelta) >= PAGE_FLIP_THRESHOLD) {
var PageFlipDirection = {
UP: -1,
DOWN: 1
};
// In presentation mode scroll one page at a time.
var pageFlipDirection = (this.mouseScrollDelta > 0) ?
PageFlipDirection.UP :
PageFlipDirection.DOWN;
this.clearMouseScrollState();
var currentPage = this.page;
// In case we are already on the first or the last page there is no need
// to do anything.
if ((currentPage == 1 && pageFlipDirection == PageFlipDirection.UP) ||
(currentPage == this.pages.length &&
pageFlipDirection == PageFlipDirection.DOWN))
return;
this.page += pageFlipDirection;
this.mouseScrollTimeStamp = currentTime;
}
},
/**
* This function clears the member attributes used with mouse scrolling in
* presentation mode.
*
* @this {PDFView}
*/
clearMouseScrollState: function pdfViewClearMouseScrollState() {
this.mouseScrollTimeStamp = 0;
this.mouseScrollDelta = 0;
}
};
//#include page_view.js
//#include thumbnail_view.js
//#include text_layer_builder.js
var DocumentOutlineView = function documentOutlineView(outline) {
var outlineView = document.getElementById('outlineView');
var outlineButton = document.getElementById('viewOutline');
while (outlineView.firstChild)
outlineView.removeChild(outlineView.firstChild);
if (!outline) {
if (!outlineView.classList.contains('hidden'))
PDFView.switchSidebarView('thumbs');
return;
}
function bindItemLink(domObj, item) {
domObj.href = PDFView.getDestinationHash(item.dest);
domObj.onclick = function documentOutlineViewOnclick(e) {
PDFView.navigateTo(item.dest);
return false;
};
}
var queue = [{parent: outlineView, items: outline}];
while (queue.length > 0) {
var levelData = queue.shift();
var i, n = levelData.items.length;
for (i = 0; i < n; i++) {
var item = levelData.items[i];
var div = document.createElement('div');
div.className = 'outlineItem';
var a = document.createElement('a');
bindItemLink(a, item);
a.textContent = item.title;
div.appendChild(a);
if (item.items.length > 0) {
var itemsDiv = document.createElement('div');
itemsDiv.className = 'outlineItems';
div.appendChild(itemsDiv);
queue.push({parent: itemsDiv, items: item.items});
}
levelData.parent.appendChild(div);
}
}
};
//#if CHROME
//(function rewriteUrlClosure() {
// // Run this code outside DOMContentLoaded to make sure that the URL
// // is rewritten as soon as possible.
// if (location.origin + '/' !== chrome.extension.getURL('/')) {
// DEFAULT_URL = window.location.href.split('#')[0];
// } else {
// var params = PDFView.parseQueryString(document.location.search.slice(1));
// DEFAULT_URL = params.file || DEFAULT_URL;
//
// // Example: chrome-extension://.../http://example.com/file.pdf
// var humanReadableUrl = '/' + DEFAULT_URL + location.hash;
// history.replaceState(history.state, '', humanReadableUrl);
// }
//})();
//#endif
document.addEventListener('DOMContentLoaded', function webViewerLoad(evt) {
PDFView.initialize();
//#if (GENERIC || B2G)
var params = PDFView.parseQueryString(document.location.search.substring(1));
var file = params.file || DEFAULT_URL;
//#endif
//#if (FIREFOX || MOZCENTRAL)
//var file = window.location.href.split('#')[0];
//#endif
//#if CHROME
//var file = DEFAULT_URL;
//#endif
//#if CHROME
//if (location.protocol !== 'chrome-extension:') {
// file = location.href.split('#')[0];
//}
//#endif
//#if !(FIREFOX || MOZCENTRAL || CHROME)
var fileInput = document.createElement('input');
fileInput.id = 'fileInput';
fileInput.className = 'fileInput';
fileInput.setAttribute('type', 'file');
fileInput.setAttribute('style',
'visibility: hidden; position: fixed; right: 0; top: 0');
fileInput.oncontextmenu = noContextMenuHandler;
document.body.appendChild(fileInput);
if (!window.File || !window.FileReader || !window.FileList || !window.Blob) {
document.getElementById('openFile').setAttribute('hidden', 'true');
document.getElementById('secondaryOpenFile').setAttribute('hidden', 'true');
} else {
document.getElementById('fileInput').value = null;
}
//#else
//document.getElementById('openFile').setAttribute('hidden', 'true');
//document.getElementById('secondaryOpenFile').setAttribute('hidden', 'true');
//#endif
// Special debugging flags in the hash section of the URL.
var hash = document.location.hash.substring(1);
var hashParams = PDFView.parseQueryString(hash);
if ('disableWorker' in hashParams) {
PDFJS.disableWorker = (hashParams['disableWorker'] === 'true');
}
if ('disableRange' in hashParams) {
PDFJS.disableRange = (hashParams['disableRange'] === 'true');
}
if ('disableAutoFetch' in hashParams) {
PDFJS.disableAutoFetch = (hashParams['disableAutoFetch'] === 'true');
}
if ('disableFontFace' in hashParams) {
PDFJS.disableFontFace = (hashParams['disableFontFace'] === 'true');
}
if ('disableHistory' in hashParams) {
PDFJS.disableHistory = (hashParams['disableHistory'] === 'true');
}
if ('useOnlyCssZoom' in hashParams) {
USE_ONLY_CSS_ZOOM = (hashParams['useOnlyCssZoom'] === 'true');
}
//#if !(FIREFOX || MOZCENTRAL)
var locale = navigator.language;
if ('locale' in hashParams)
locale = hashParams['locale'];
mozL10n.setLanguage(locale);
//#endif
//#if (FIREFOX || MOZCENTRAL)
//if (!PDFView.supportsDocumentFonts) {
// PDFJS.disableFontFace = true;
//}
//#endif
if ('textLayer' in hashParams) {
switch (hashParams['textLayer']) {
case 'off':
PDFJS.disableTextLayer = true;
break;
case 'visible':
case 'shadow':
case 'hover':
var viewer = document.getElementById('viewer');
viewer.classList.add('textLayer-' + hashParams['textLayer']);
break;
}
}
//#if !(FIREFOX || MOZCENTRAL)
if ('pdfBug' in hashParams) {
//#else
//if ('pdfBug' in hashParams && FirefoxCom.requestSync('pdfBugEnabled')) {
//#endif
PDFJS.pdfBug = true;
var pdfBug = hashParams['pdfBug'];
var enabled = pdfBug.split(',');
PDFBug.enable(enabled);
PDFBug.init();
}
if (!PDFView.supportsPrinting) {
document.getElementById('print').classList.add('hidden');
document.getElementById('secondaryPrint').classList.add('hidden');
}
if (!PDFView.supportsFullscreen) {
document.getElementById('presentationMode').classList.add('hidden');
document.getElementById('secondaryPresentationMode').
classList.add('hidden');
}
if (PDFView.supportsIntegratedFind) {
document.getElementById('viewFind').classList.add('hidden');
}
// Listen for warnings to trigger the fallback UI. Errors should be caught
// and call PDFView.error() so we don't need to listen for those.
PDFJS.LogManager.addLogger({
warn: function() {
PDFView.fallback();
}
});
// Suppress context menus for some controls
document.getElementById('scaleSelect').oncontextmenu = noContextMenuHandler;
var mainContainer = document.getElementById('mainContainer');
var outerContainer = document.getElementById('outerContainer');
mainContainer.addEventListener('transitionend', function(e) {
if (e.target == mainContainer) {
var event = document.createEvent('UIEvents');
event.initUIEvent('resize', false, false, window, 0);
window.dispatchEvent(event);
outerContainer.classList.remove('sidebarMoving');
}
}, true);
document.getElementById('sidebarToggle').addEventListener('click',
function() {
this.classList.toggle('toggled');
outerContainer.classList.add('sidebarMoving');
outerContainer.classList.toggle('sidebarOpen');
PDFView.sidebarOpen = outerContainer.classList.contains('sidebarOpen');
PDFView.renderHighestPriority();
});
document.getElementById('viewThumbnail').addEventListener('click',
function() {
PDFView.switchSidebarView('thumbs');
});
document.getElementById('viewOutline').addEventListener('click',
function() {
PDFView.switchSidebarView('outline');
});
document.getElementById('previous').addEventListener('click',
function() {
PDFView.page--;
});
document.getElementById('next').addEventListener('click',
function() {
PDFView.page++;
});
document.getElementById('zoomIn').addEventListener('click',
function() {
PDFView.zoomIn();
});
document.getElementById('zoomOut').addEventListener('click',
function() {
PDFView.zoomOut();
});
document.getElementById('pageNumber').addEventListener('click',
function() {
this.select();
});
document.getElementById('pageNumber').addEventListener('change',
function() {
// Handle the user inputting a floating point number.
PDFView.page = (this.value | 0);
if (this.value !== (this.value | 0).toString()) {
this.value = PDFView.page;
}
});
document.getElementById('scaleSelect').addEventListener('change',
function() {
PDFView.setScale(this.value);
});
document.getElementById('presentationMode').addEventListener('click',
SecondaryToolbar.presentationModeClick.bind(SecondaryToolbar));
document.getElementById('openFile').addEventListener('click',
SecondaryToolbar.openFileClick.bind(SecondaryToolbar));
document.getElementById('print').addEventListener('click',
SecondaryToolbar.printClick.bind(SecondaryToolbar));
document.getElementById('download').addEventListener('click',
SecondaryToolbar.downloadClick.bind(SecondaryToolbar));
//#if (FIREFOX || MOZCENTRAL)
//PDFView.setTitleUsingUrl(file);
//PDFView.initPassiveLoading();
//return;
//#endif
//#if !B2G
PDFView.open(file, 0);
//#endif
}, true);
function updateViewarea() {
if (!PDFView.initialized)
return;
var visible = PDFView.getVisiblePages();
var visiblePages = visible.views;
if (visiblePages.length === 0) {
return;
}
PDFView.renderHighestPriority();
var currentId = PDFView.page;
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 === PDFView.page) {
stillFullyVisible = true;
break;
}
}
if (!stillFullyVisible) {
currentId = visiblePages[0].id;
}
updateViewarea.inProgress = true; // used in "set page"
PDFView.page = currentId;
updateViewarea.inProgress = false;
var currentScale = PDFView.currentScale;
var currentScaleValue = PDFView.currentScaleValue;
var normalizedScaleValue = parseFloat(currentScaleValue) === currentScale ?
Math.round(currentScale * 10000) / 100 : currentScaleValue;
var pageNumber = firstPage.id;
var pdfOpenParams = '#page=' + pageNumber;
pdfOpenParams += '&zoom=' + normalizedScaleValue;
var currentPage = PDFView.pages[pageNumber - 1];
var topLeft = currentPage.getPagePoint(PDFView.container.scrollLeft,
(PDFView.container.scrollTop - firstPage.y));
pdfOpenParams += ',' + Math.round(topLeft[0]) + ',' + Math.round(topLeft[1]);
var store = PDFView.store;
store.initializedPromise.then(function() {
store.set('exists', true);
store.set('page', pageNumber);
store.set('zoom', normalizedScaleValue);
store.set('scrollLeft', Math.round(topLeft[0]));
store.set('scrollTop', Math.round(topLeft[1]));
});
var href = PDFView.getAnchorUrl(pdfOpenParams);
document.getElementById('viewBookmark').href = href;
document.getElementById('secondaryViewBookmark').href = href;
// Update the current bookmark in the browsing history.
PDFHistory.updateCurrentBookmark(pdfOpenParams, pageNumber);
}
window.addEventListener('resize', function webViewerResize(evt) {
if (PDFView.initialized &&
(document.getElementById('pageWidthOption').selected ||
document.getElementById('pageFitOption').selected ||
document.getElementById('pageAutoOption').selected)) {
PDFView.setScale(document.getElementById('scaleSelect').value);
}
updateViewarea();
// Set the 'max-height' CSS property of the secondary toolbar.
SecondaryToolbar.setMaxHeight(PDFView.container);
});
window.addEventListener('hashchange', function webViewerHashchange(evt) {
if (PDFHistory.isHashChangeUnlocked) {
PDFView.setHash(document.location.hash.substring(1));
}
});
window.addEventListener('change', function webViewerChange(evt) {
var files = evt.target.files;
if (!files || files.length === 0)
return;
// Read the local file into a Uint8Array.
var fileReader = new FileReader();
fileReader.onload = function webViewerChangeFileReaderOnload(evt) {
var buffer = evt.target.result;
var uint8Array = new Uint8Array(buffer);
PDFView.open(uint8Array, 0);
};
var file = files[0];
fileReader.readAsArrayBuffer(file);
PDFView.setTitleUsingUrl(file.name);
// URL does not reflect proper document location - hiding some icons.
document.getElementById('viewBookmark').setAttribute('hidden', 'true');
document.getElementById('secondaryViewBookmark').
setAttribute('hidden', 'true');
document.getElementById('download').setAttribute('hidden', 'true');
document.getElementById('secondaryDownload').setAttribute('hidden', 'true');
}, true);
function selectScaleOption(value) {
var options = document.getElementById('scaleSelect').options;
var predefinedValueFound = false;
for (var i = 0; i < options.length; i++) {
var option = options[i];
if (option.value != value) {
option.selected = false;
continue;
}
option.selected = true;
predefinedValueFound = true;
}
return predefinedValueFound;
}
window.addEventListener('localized', function localized(evt) {
document.getElementsByTagName('html')[0].dir = mozL10n.getDirection();
PDFView.animationStartedPromise.then(function() {
// Adjust the width of the zoom box to fit the content.
// Note: This is only done if the zoom box is actually visible,
// since otherwise element.clientWidth will return 0.
var container = document.getElementById('scaleSelectContainer');
if (container.clientWidth > 0) {
var select = document.getElementById('scaleSelect');
select.setAttribute('style', 'min-width: inherit;');
var width = select.clientWidth + SCALE_SELECT_CONTAINER_PADDING;
select.setAttribute('style', 'min-width: ' +
(width + SCALE_SELECT_PADDING) + 'px;');
container.setAttribute('style', 'min-width: ' + width + 'px; ' +
'max-width: ' + width + 'px;');
}
// Set the 'max-height' CSS property of the secondary toolbar.
SecondaryToolbar.setMaxHeight(PDFView.container);
});
}, true);
window.addEventListener('scalechange', function scalechange(evt) {
document.getElementById('zoomOut').disabled = (evt.scale === MIN_SCALE);
document.getElementById('zoomIn').disabled = (evt.scale === MAX_SCALE);
var customScaleOption = document.getElementById('customScaleOption');
customScaleOption.selected = false;
if (!evt.resetAutoSettings &&
(document.getElementById('pageWidthOption').selected ||
document.getElementById('pageFitOption').selected ||
document.getElementById('pageAutoOption').selected)) {
updateViewarea();
return;
}
var predefinedValueFound = selectScaleOption('' + evt.scale);
if (!predefinedValueFound) {
customScaleOption.textContent = Math.round(evt.scale * 10000) / 100 + '%';
customScaleOption.selected = true;
}
updateViewarea();
}, true);
window.addEventListener('pagechange', function pagechange(evt) {
var page = evt.pageNumber;
if (PDFView.previousPageNumber !== page) {
document.getElementById('pageNumber').value = page;
var selected = document.querySelector('.thumbnail.selected');
if (selected) {
selected.classList.remove('selected');
}
var thumbnail = document.getElementById('thumbnailContainer' + page);
thumbnail.classList.add('selected');
var visibleThumbs = PDFView.getVisibleThumbs();
var numVisibleThumbs = visibleThumbs.views.length;
// If the thumbnail isn't currently visible, scroll it into view.
if (numVisibleThumbs > 0) {
var first = visibleThumbs.first.id;
// Account for only one thumbnail being visible.
var last = (numVisibleThumbs > 1 ? visibleThumbs.last.id : first);
if (page <= first || page >= last) {
scrollIntoView(thumbnail, { top: THUMBNAIL_SCROLL_MARGIN });
}
}
}
document.getElementById('previous').disabled = (page <= 1);
document.getElementById('next').disabled = (page >= PDFView.pages.length);
}, true);
// Firefox specific event, so that we can prevent browser from zooming
window.addEventListener('DOMMouseScroll', function(evt) {
if (evt.ctrlKey) {
evt.preventDefault();
var ticks = evt.detail;
var direction = (ticks > 0) ? 'zoomOut' : 'zoomIn';
PDFView[direction](Math.abs(ticks));
} else if (PresentationMode.active) {
var FIREFOX_DELTA_FACTOR = -40;
PDFView.mouseScroll(evt.detail * FIREFOX_DELTA_FACTOR);
}
}, false);
window.addEventListener('click', function click(evt) {
if (!PresentationMode.active) {
if (SecondaryToolbar.opened && PDFView.container.contains(evt.target)) {
SecondaryToolbar.close();
}
} else if (evt.button === 0) {
// Necessary since preventDefault() in 'mousedown' won't stop
// the event propagation in all circumstances in presentation mode.
evt.preventDefault();
}
}, false);
window.addEventListener('keydown', function keydown(evt) {
if (PasswordPrompt.visible) {
return;
}
var handled = false;
var cmd = (evt.ctrlKey ? 1 : 0) |
(evt.altKey ? 2 : 0) |
(evt.shiftKey ? 4 : 0) |
(evt.metaKey ? 8 : 0);
// First, handle the key bindings that are independent whether an input
// control is selected or not.
if (cmd === 1 || cmd === 8 || cmd === 5 || cmd === 12) {
// either CTRL or META key with optional SHIFT.
switch (evt.keyCode) {
case 70: // f
if (!PDFView.supportsIntegratedFind) {
PDFFindBar.open();
handled = true;
}
break;
case 71: // g
if (!PDFView.supportsIntegratedFind) {
PDFFindBar.dispatchEvent('again', cmd === 5 || cmd === 12);
handled = true;
}
break;
case 61: // FF/Mac '='
case 107: // FF '+' and '='
case 187: // Chrome '+'
case 171: // FF with German keyboard
PDFView.zoomIn();
handled = true;
break;
case 173: // FF/Mac '-'
case 109: // FF '-'
case 189: // Chrome '-'
PDFView.zoomOut();
handled = true;
break;
case 48: // '0'
case 96: // '0' on Numpad of Swedish keyboard
// keeping it unhandled (to restore page zoom to 100%)
setTimeout(function () {
// ... and resetting the scale after browser adjusts its scale
PDFView.setScale(DEFAULT_SCALE, true);
});
handled = false;
break;
}
}
// CTRL+ALT or Option+Command
if (cmd === 3 || cmd === 10) {
switch (evt.keyCode) {
case 80: // p
SecondaryToolbar.presentationModeClick();
handled = true;
break;
}
}
if (handled) {
evt.preventDefault();
return;
}
// Some shortcuts should not get handled if a control/input element
// is selected.
var curElement = document.activeElement || document.querySelector(':focus');
if (curElement && (curElement.tagName.toUpperCase() === 'INPUT' ||
curElement.tagName.toUpperCase() === 'TEXTAREA' ||
curElement.tagName.toUpperCase() === 'SELECT')) {
// Make sure that the secondary toolbar is closed when Escape is pressed.
if (evt.keyCode !== 27) { // 'Esc'
return;
}
}
var controlsElement = document.getElementById('toolbar');
while (curElement) {
if (curElement === controlsElement && !PresentationMode.active)
return; // ignoring if the 'toolbar' element is focused
curElement = curElement.parentNode;
}
//#if (FIREFOX || MOZCENTRAL)
//// Workaround for issue in Firefox, that prevents scroll keys from working
//// when elements with 'tabindex' are focused.
//PDFView.container.blur();
//#endif
if (cmd === 0) { // no control key pressed at all.
switch (evt.keyCode) {
case 38: // up arrow
case 33: // pg up
case 8: // backspace
if (!PresentationMode.active &&
PDFView.currentScaleValue !== 'page-fit') {
break;
}
/* in presentation mode */
/* falls through */
case 37: // left arrow
// horizontal scrolling using arrow keys
if (PDFView.isHorizontalScrollbarEnabled) {
break;
}
/* falls through */
case 75: // 'k'
case 80: // 'p'
PDFView.page--;
handled = true;
break;
case 27: // esc key
if (SecondaryToolbar.opened) {
SecondaryToolbar.close();
handled = true;
}
if (!PDFView.supportsIntegratedFind && PDFFindBar.opened) {
PDFFindBar.close();
handled = true;
}
break;
case 40: // down arrow
case 34: // pg down
case 32: // spacebar
if (!PresentationMode.active &&
PDFView.currentScaleValue !== 'page-fit') {
break;
}
/* falls through */
case 39: // right arrow
// horizontal scrolling using arrow keys
if (PDFView.isHorizontalScrollbarEnabled) {
break;
}
/* falls through */
case 74: // 'j'
case 78: // 'n'
PDFView.page++;
handled = true;
break;
case 36: // home
if (PresentationMode.active) {
PDFView.page = 1;
handled = true;
}
break;
case 35: // end
if (PresentationMode.active) {
PDFView.page = PDFView.pdfDocument.numPages;
handled = true;
}
break;
case 82: // 'r'
PDFView.rotatePages(90);
break;
}
}
if (cmd === 4) { // shift-key
switch (evt.keyCode) {
case 32: // spacebar
if (!PresentationMode.active &&
PDFView.currentScaleValue !== 'page-fit') {
break;
}
PDFView.page--;
handled = true;
break;
case 82: // 'r'
PDFView.rotatePages(-90);
break;
}
}
if (cmd === 2) { // alt-key
switch (evt.keyCode) {
case 37: // left arrow
if (PresentationMode.active) {
PDFHistory.back();
handled = true;
}
break;
case 39: // right arrow
if (PresentationMode.active) {
PDFHistory.forward();
handled = true;
}
break;
}
}
if (handled) {
evt.preventDefault();
PDFView.clearMouseScrollState();
}
});
window.addEventListener('beforeprint', function beforePrint(evt) {
PDFView.beforePrint();
});
window.addEventListener('afterprint', function afterPrint(evt) {
PDFView.afterPrint();
});
(function animationStartedClosure() {
// The offsetParent is not set until the pdf.js iframe or object is visible.
// Waiting for first animation.
var requestAnimationFrame = window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function startAtOnce(callback) { callback(); };
PDFView.animationStartedPromise = new PDFJS.Promise();
requestAnimationFrame(function onAnimationFrame() {
PDFView.animationStartedPromise.resolve();
});
})();
//#if B2G
//window.navigator.mozSetMessageHandler('activity', function(activity) {
// var url = activity.source.data.url;
// PDFJS.maxImageSize = 1024 * 1024;
// PDFView.open(url);
// var cancelButton = document.getElementById('activityClose');
// cancelButton.addEventListener('click', function() {
// activity.postResult('close');
// });
//});
//#endif