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Change var to let, and use object destructuring, in a couple of previously class converted web/*.js files

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Note that these files were among the first to be converted to ES6 classes, so it probably makes sense to do another pass to bring them inline with the most recent ES6 conversions.
This commit is contained in:
Jonas Jenwald 2017-06-30 12:55:22 +02:00
parent 699f3392e4
commit 614e8cf295
9 changed files with 113 additions and 118 deletions
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21
web/annotation_layer_builder.js
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@ -31,13 +31,14 @@ class AnnotationLayerBuilder {
/** /**
* @param {AnnotationLayerBuilderOptions} options * @param {AnnotationLayerBuilderOptions} options
*/ */
constructor(options) { constructor({ pageDiv, pdfPage, linkService, downloadManager,
this.pageDiv = options.pageDiv; renderInteractiveForms = false, l10n = NullL10n, }) {
this.pdfPage = options.pdfPage; this.pageDiv = pageDiv;
this.renderInteractiveForms = options.renderInteractiveForms; this.pdfPage = pdfPage;
this.linkService = options.linkService; this.linkService = linkService;
this.downloadManager = options.downloadManager; this.downloadManager = downloadManager;
this.l10n = options.l10n || NullL10n; this.renderInteractiveForms = renderInteractiveForms;
this.l10n = l10n;
this.div = null; this.div = null;
} }
@ -48,7 +49,7 @@ class AnnotationLayerBuilder {
*/ */
render(viewport, intent = 'display') { render(viewport, intent = 'display') {
this.pdfPage.getAnnotations({ intent, }).then((annotations) => { this.pdfPage.getAnnotations({ intent, }).then((annotations) => {
var parameters = { let parameters = {
viewport: viewport.clone({ dontFlip: true, }), viewport: viewport.clone({ dontFlip: true, }),
div: this.div, div: this.div,
annotations, annotations,
@ -68,7 +69,6 @@ class AnnotationLayerBuilder {
if (annotations.length === 0) { if (annotations.length === 0) {
return; return;
} }
this.div = document.createElement('div'); this.div = document.createElement('div');
this.div.className = 'annotationLayer'; this.div.className = 'annotationLayer';
this.pageDiv.appendChild(this.div); this.pageDiv.appendChild(this.div);
@ -99,8 +99,7 @@ class DefaultAnnotationLayerFactory {
* @param {IL10n} l10n * @param {IL10n} l10n
* @returns {AnnotationLayerBuilder} * @returns {AnnotationLayerBuilder}
*/ */
createAnnotationLayerBuilder(pageDiv, pdfPage, createAnnotationLayerBuilder(pageDiv, pdfPage, renderInteractiveForms = false,
renderInteractiveForms = false,
l10n = NullL10n) { l10n = NullL10n) {
return new AnnotationLayerBuilder({ return new AnnotationLayerBuilder({
pageDiv, pageDiv,

2
web/password_prompt.js
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@ -87,7 +87,7 @@ class PasswordPrompt {
} }
verify() { verify() {
var password = this.input.value; let password = this.input.value;
if (password && password.length > 0) { if (password && password.length > 0) {
this.close(); this.close();
return this.updateCallback(password); return this.updateCallback(password);

40
web/pdf_attachment_viewer.js
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@ -27,19 +27,19 @@ import {
/** /**
* @typedef {Object} PDFAttachmentViewerRenderParameters * @typedef {Object} PDFAttachmentViewerRenderParameters
* @property {Array|null} attachments - An array of attachment objects. * @property {Object|null} attachments - A lookup table of attachment objects.
*/ */
class PDFAttachmentViewer { class PDFAttachmentViewer {
/** /**
* @param {PDFAttachmentViewerOptions} options * @param {PDFAttachmentViewerOptions} options
*/ */
constructor(options) { constructor({ container, eventBus, downloadManager, }) {
this.attachments = null; this.attachments = null;
this.container = options.container; this.container = container;
this.eventBus = options.eventBus; this.eventBus = eventBus;
this.downloadManager = options.downloadManager; this.downloadManager = downloadManager;
this._renderedCapability = createPromiseCapability(); this._renderedCapability = createPromiseCapability();
this.eventBus.on('fileattachmentannotation', this.eventBus.on('fileattachmentannotation',
@ -79,12 +79,12 @@ class PDFAttachmentViewer {
throw new Error('bindPdfLink: ' + throw new Error('bindPdfLink: ' +
'Unsupported "PDFJS.disableCreateObjectURL" value.'); 'Unsupported "PDFJS.disableCreateObjectURL" value.');
} }
var blobUrl; let blobUrl;
button.onclick = function() { button.onclick = function() {
if (!blobUrl) { if (!blobUrl) {
blobUrl = createObjectURL(content, 'application/pdf'); blobUrl = createObjectURL(content, 'application/pdf');
} }
var viewerUrl; let viewerUrl;
if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) { if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
// The current URL is the viewer, let's use it and append the file. // The current URL is the viewer, let's use it and append the file.
viewerUrl = '?file=' + encodeURIComponent(blobUrl + '#' + filename); viewerUrl = '?file=' + encodeURIComponent(blobUrl + '#' + filename);
@ -116,33 +116,31 @@ class PDFAttachmentViewer {
/** /**
* @param {PDFAttachmentViewerRenderParameters} params * @param {PDFAttachmentViewerRenderParameters} params
*/ */
render(params = {}) { render({ attachments, keepRenderedCapability = false, }) {
var attachments = params.attachments || null; let attachmentsCount = 0;
var attachmentsCount = 0;
if (this.attachments) { if (this.attachments) {
var keepRenderedCapability = params.keepRenderedCapability === true; this.reset(keepRenderedCapability === true);
this.reset(keepRenderedCapability);
} }
this.attachments = attachments; this.attachments = attachments || null;
if (!attachments) { if (!attachments) {
this._dispatchEvent(attachmentsCount); this._dispatchEvent(attachmentsCount);
return; return;
} }
var names = Object.keys(attachments).sort(function(a, b) { let names = Object.keys(attachments).sort(function(a, b) {
return a.toLowerCase().localeCompare(b.toLowerCase()); return a.toLowerCase().localeCompare(b.toLowerCase());
}); });
attachmentsCount = names.length; attachmentsCount = names.length;
for (var i = 0; i < attachmentsCount; i++) { for (let i = 0; i < attachmentsCount; i++) {
var item = attachments[names[i]]; let item = attachments[names[i]];
var filename = removeNullCharacters(getFilenameFromUrl(item.filename)); let filename = removeNullCharacters(getFilenameFromUrl(item.filename));
var div = document.createElement('div'); let div = document.createElement('div');
div.className = 'attachmentsItem'; div.className = 'attachmentsItem';
var button = document.createElement('button'); let button = document.createElement('button');
button.textContent = filename; button.textContent = filename;
if (/\.pdf$/i.test(filename) && !PDFJS.disableCreateObjectURL) { if (/\.pdf$/i.test(filename) && !PDFJS.disableCreateObjectURL) {
this._bindPdfLink(button, item.content, filename); this._bindPdfLink(button, item.content, filename);
@ -163,12 +161,12 @@ class PDFAttachmentViewer {
*/ */
_appendAttachment({ id, filename, content, }) { _appendAttachment({ id, filename, content, }) {
this._renderedCapability.promise.then(() => { this._renderedCapability.promise.then(() => {
var attachments = this.attachments; let attachments = this.attachments;
if (!attachments) { if (!attachments) {
attachments = Object.create(null); attachments = Object.create(null);
} else { } else {
for (var name in attachments) { for (let name in attachments) {
if (id === name) { if (id === name) {
return; // Ignore the new attachment if it already exists. return; // Ignore the new attachment if it already exists.
} }

24
web/pdf_document_properties.js
View File

@ -231,15 +231,15 @@ class PDFDocumentProperties {
// Get all elements from the PDF date string. // Get all elements from the PDF date string.
// JavaScript's `Date` object expects the month to be between // JavaScript's `Date` object expects the month to be between
// 0 and 11 instead of 1 and 12, so we're correcting for this. // 0 and 11 instead of 1 and 12, so we're correcting for this.
var year = parseInt(dateToParse.substring(0, 4), 10); let year = parseInt(dateToParse.substring(0, 4), 10);
var month = parseInt(dateToParse.substring(4, 6), 10) - 1; let month = parseInt(dateToParse.substring(4, 6), 10) - 1;
var day = parseInt(dateToParse.substring(6, 8), 10); let day = parseInt(dateToParse.substring(6, 8), 10);
var hours = parseInt(dateToParse.substring(8, 10), 10); let hours = parseInt(dateToParse.substring(8, 10), 10);
var minutes = parseInt(dateToParse.substring(10, 12), 10); let minutes = parseInt(dateToParse.substring(10, 12), 10);
var seconds = parseInt(dateToParse.substring(12, 14), 10); let seconds = parseInt(dateToParse.substring(12, 14), 10);
var utRel = dateToParse.substring(14, 15); let utRel = dateToParse.substring(14, 15);
var offsetHours = parseInt(dateToParse.substring(15, 17), 10); let offsetHours = parseInt(dateToParse.substring(15, 17), 10);
var offsetMinutes = parseInt(dateToParse.substring(18, 20), 10); let offsetMinutes = parseInt(dateToParse.substring(18, 20), 10);
// As per spec, utRel = 'Z' means equal to universal time. // As per spec, utRel = 'Z' means equal to universal time.
// The other cases ('-' and '+') have to be handled here. // The other cases ('-' and '+') have to be handled here.
@ -252,9 +252,9 @@ class PDFDocumentProperties {
} }
// Return the new date format from the user's locale. // Return the new date format from the user's locale.
var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds)); let date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
var dateString = date.toLocaleDateString(); let dateString = date.toLocaleDateString();
var timeString = date.toLocaleTimeString(); let timeString = date.toLocaleTimeString();
return this.l10n.get('document_properties_date_string', return this.l10n.get('document_properties_date_string',
{ date: dateString, time: timeString, }, { date: dateString, time: timeString, },
'{{date}}, {{time}}'); '{{date}}, {{time}}');

10
web/pdf_find_bar.js
View File

@ -103,9 +103,9 @@ class PDFFindBar {
} }
updateUIState(state, previous, matchCount) { updateUIState(state, previous, matchCount) {
var notFound = false; let notFound = false;
var findMsg = ''; let findMsg = '';
var status = ''; let status = '';
switch (state) { switch (state) {
case FindState.FOUND: case FindState.FOUND:
@ -206,8 +206,8 @@ class PDFFindBar {
// wrapped). Here we detect and fix that. // wrapped). Here we detect and fix that.
this.bar.classList.remove('wrapContainers'); this.bar.classList.remove('wrapContainers');
var findbarHeight = this.bar.clientHeight; let findbarHeight = this.bar.clientHeight;
var inputContainerHeight = this.bar.firstElementChild.clientHeight; let inputContainerHeight = this.bar.firstElementChild.clientHeight;
if (findbarHeight > inputContainerHeight) { if (findbarHeight > inputContainerHeight) {
// The findbar is taller than the input container, which means that // The findbar is taller than the input container, which means that

45
web/pdf_outline_viewer.js
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@ -35,13 +35,13 @@ class PDFOutlineViewer {
/** /**
* @param {PDFOutlineViewerOptions} options * @param {PDFOutlineViewerOptions} options
*/ */
constructor(options) { constructor({ container, linkService, eventBus, }) {
this.outline = null; this.outline = null;
this.lastToggleIsShow = true; this.lastToggleIsShow = true;
this.container = options.container; this.container = container;
this.linkService = options.linkService; this.linkService = linkService;
this.eventBus = options.eventBus; this.eventBus = eventBus;
} }
reset() { reset() {
@ -77,7 +77,7 @@ class PDFOutlineViewer {
}); });
return; return;
} }
var destination = item.dest; let destination = item.dest;
element.href = this.linkService.getDestinationHash(destination); element.href = this.linkService.getDestinationHash(destination);
element.onclick = () => { element.onclick = () => {
@ -92,7 +92,7 @@ class PDFOutlineViewer {
* @private * @private
*/ */
_setStyles(element, item) { _setStyles(element, item) {
var styleStr = ''; let styleStr = '';
if (item.bold) { if (item.bold) {
styleStr += 'font-weight: bold;'; styleStr += 'font-weight: bold;';
} }
@ -112,14 +112,14 @@ class PDFOutlineViewer {
* @private * @private
*/ */
_addToggleButton(div) { _addToggleButton(div) {
var toggler = document.createElement('div'); let toggler = document.createElement('div');
toggler.className = 'outlineItemToggler'; toggler.className = 'outlineItemToggler';
toggler.onclick = (evt) => { toggler.onclick = (evt) => {
evt.stopPropagation(); evt.stopPropagation();
toggler.classList.toggle('outlineItemsHidden'); toggler.classList.toggle('outlineItemsHidden');
if (evt.shiftKey) { if (evt.shiftKey) {
var shouldShowAll = !toggler.classList.contains('outlineItemsHidden'); let shouldShowAll = !toggler.classList.contains('outlineItemsHidden');
this._toggleOutlineItem(div, shouldShowAll); this._toggleOutlineItem(div, shouldShowAll);
} }
}; };
@ -137,8 +137,8 @@ class PDFOutlineViewer {
*/ */
_toggleOutlineItem(root, show) { _toggleOutlineItem(root, show) {
this.lastToggleIsShow = show; this.lastToggleIsShow = show;
var togglers = root.querySelectorAll('.outlineItemToggler'); let togglers = root.querySelectorAll('.outlineItemToggler');
for (var i = 0, ii = togglers.length; i < ii; ++i) { for (let i = 0, ii = togglers.length; i < ii; ++i) {
togglers[i].classList[show ? 'remove' : 'add']('outlineItemsHidden'); togglers[i].classList[show ? 'remove' : 'add']('outlineItemsHidden');
} }
} }
@ -156,32 +156,31 @@ class PDFOutlineViewer {
/** /**
* @param {PDFOutlineViewerRenderParameters} params * @param {PDFOutlineViewerRenderParameters} params
*/ */
render(params = {}) { render({ outline, }) {
var outline = params.outline || null; let outlineCount = 0;
var outlineCount = 0;
if (this.outline) { if (this.outline) {
this.reset(); this.reset();
} }
this.outline = outline; this.outline = outline || null;
if (!outline) { if (!outline) {
this._dispatchEvent(outlineCount); this._dispatchEvent(outlineCount);
return; return;
} }
var fragment = document.createDocumentFragment(); let fragment = document.createDocumentFragment();
var queue = [{ parent: fragment, items: this.outline, }]; let queue = [{ parent: fragment, items: this.outline, }];
var hasAnyNesting = false; let hasAnyNesting = false;
while (queue.length > 0) { while (queue.length > 0) {
var levelData = queue.shift(); let levelData = queue.shift();
for (var i = 0, len = levelData.items.length; i < len; i++) { for (let i = 0, len = levelData.items.length; i < len; i++) {
var item = levelData.items[i]; let item = levelData.items[i];
var div = document.createElement('div'); let div = document.createElement('div');
div.className = 'outlineItem'; div.className = 'outlineItem';
var element = document.createElement('a'); let element = document.createElement('a');
this._bindLink(element, item); this._bindLink(element, item);
this._setStyles(element, item); this._setStyles(element, item);
element.textContent = element.textContent =
@ -193,7 +192,7 @@ class PDFOutlineViewer {
hasAnyNesting = true; hasAnyNesting = true;
this._addToggleButton(div); this._addToggleButton(div);
var itemsDiv = document.createElement('div'); let itemsDiv = document.createElement('div');
itemsDiv.className = 'outlineItems'; itemsDiv.className = 'outlineItems';
div.appendChild(itemsDiv); div.appendChild(itemsDiv);
queue.push({ parent: itemsDiv, items: item.items, }); queue.push({ parent: itemsDiv, items: item.items, });

38
web/pdf_presentation_mode.js
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@ -43,12 +43,12 @@ class PDFPresentationMode {
/** /**
* @param {PDFPresentationModeOptions} options * @param {PDFPresentationModeOptions} options
*/ */
constructor(options) { constructor({ container, viewer = null, pdfViewer, eventBus,
this.container = options.container; contextMenuItems = null, }) {
this.viewer = options.viewer || options.container.firstElementChild; this.container = container;
this.pdfViewer = options.pdfViewer; this.viewer = viewer || container.firstElementChild;
this.eventBus = options.eventBus; this.pdfViewer = pdfViewer;
var contextMenuItems = options.contextMenuItems || null; this.eventBus = eventBus;
this.active = false; this.active = false;
this.args = null; this.args = null;
@ -119,9 +119,9 @@ class PDFPresentationMode {
evt.preventDefault(); evt.preventDefault();
var delta = normalizeWheelEventDelta(evt); let delta = normalizeWheelEventDelta(evt);
var currentTime = (new Date()).getTime(); let currentTime = (new Date()).getTime();
var storedTime = this.mouseScrollTimeStamp; let storedTime = this.mouseScrollTimeStamp;
// If we've already switched page, avoid accidentally switching again. // If we've already switched page, avoid accidentally switching again.
if (currentTime > storedTime && if (currentTime > storedTime &&
@ -136,9 +136,9 @@ class PDFPresentationMode {
this.mouseScrollDelta += delta; this.mouseScrollDelta += delta;
if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) { if (Math.abs(this.mouseScrollDelta) >= PAGE_SWITCH_THRESHOLD) {
var totalDelta = this.mouseScrollDelta; let totalDelta = this.mouseScrollDelta;
this._resetMouseScrollState(); this._resetMouseScrollState();
var success = totalDelta > 0 ? this._goToPreviousPage() let success = totalDelta > 0 ? this._goToPreviousPage()
: this._goToNextPage(); : this._goToNextPage();
if (success) { if (success) {
this.mouseScrollTimeStamp = currentTime; this.mouseScrollTimeStamp = currentTime;
@ -155,7 +155,7 @@ class PDFPresentationMode {
* @private * @private
*/ */
_goToPreviousPage() { _goToPreviousPage() {
var page = this.pdfViewer.currentPageNumber; let page = this.pdfViewer.currentPageNumber;
// If we're at the first page, we don't need to do anything. // If we're at the first page, we don't need to do anything.
if (page <= 1) { if (page <= 1) {
return false; return false;
@ -168,7 +168,7 @@ class PDFPresentationMode {
* @private * @private
*/ */
_goToNextPage() { _goToNextPage() {
var page = this.pdfViewer.currentPageNumber; let page = this.pdfViewer.currentPageNumber;
// If we're at the last page, we don't need to do anything. // If we're at the last page, we don't need to do anything.
if (page >= this.pdfViewer.pagesCount) { if (page >= this.pdfViewer.pagesCount) {
return false; return false;
@ -249,7 +249,7 @@ class PDFPresentationMode {
* @private * @private
*/ */
_exit() { _exit() {
var page = this.pdfViewer.currentPageNumber; let page = this.pdfViewer.currentPageNumber;
this.container.classList.remove(ACTIVE_SELECTOR); this.container.classList.remove(ACTIVE_SELECTOR);
// Ensure that the correct page is scrolled into view when exiting // Ensure that the correct page is scrolled into view when exiting
@ -283,7 +283,7 @@ class PDFPresentationMode {
if (evt.button === 0) { if (evt.button === 0) {
// Enable clicking of links in presentation mode. Note: only links // Enable clicking of links in presentation mode. Note: only links
// pointing to destinations in the current PDF document work. // pointing to destinations in the current PDF document work.
var isInternalLink = (evt.target.href && let isInternalLink = (evt.target.href &&
evt.target.classList.contains('internalLink')); evt.target.classList.contains('internalLink'));
if (!isInternalLink) { if (!isInternalLink) {
// Unless an internal link was clicked, advance one page. // Unless an internal link was clicked, advance one page.
@ -378,10 +378,10 @@ class PDFPresentationMode {
if (this.touchSwipeState === null) { if (this.touchSwipeState === null) {
return; return;
} }
var delta = 0; let delta = 0;
var dx = this.touchSwipeState.endX - this.touchSwipeState.startX; let dx = this.touchSwipeState.endX - this.touchSwipeState.startX;
var dy = this.touchSwipeState.endY - this.touchSwipeState.startY; let dy = this.touchSwipeState.endY - this.touchSwipeState.startY;
var absAngle = Math.abs(Math.atan2(dy, dx)); let absAngle = Math.abs(Math.atan2(dy, dx));
if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD && if (Math.abs(dx) > SWIPE_MIN_DISTANCE_THRESHOLD &&
(absAngle <= SWIPE_ANGLE_THRESHOLD || (absAngle <= SWIPE_ANGLE_THRESHOLD ||
absAngle >= (Math.PI - SWIPE_ANGLE_THRESHOLD))) { absAngle >= (Math.PI - SWIPE_ANGLE_THRESHOLD))) {

25
web/pdf_sidebar.js
View File

@ -138,7 +138,7 @@ class PDFSidebar {
// immediately closing it would be bad UX. // immediately closing it would be bad UX.
return; return;
} }
var isViewPreserved = (view === this.visibleView); let isViewPreserved = (view === this.visibleView);
this.switchView(view, /* forceOpen */ true); this.switchView(view, /* forceOpen */ true);
if (isViewPreserved) { if (isViewPreserved) {
@ -159,8 +159,8 @@ class PDFSidebar {
this.close(); this.close();
return; return;
} }
var isViewChanged = (view !== this.active); let isViewChanged = (view !== this.active);
var shouldForceRendering = false; let shouldForceRendering = false;
switch (view) { switch (view) {
case SidebarView.THUMBS: case SidebarView.THUMBS:
@ -290,19 +290,18 @@ class PDFSidebar {
* @private * @private
*/ */
_updateThumbnailViewer() { _updateThumbnailViewer() {
var pdfViewer = this.pdfViewer; let { pdfViewer, pdfThumbnailViewer, } = this;
var thumbnailViewer = this.pdfThumbnailViewer;
// Use the rendered pages to set the corresponding thumbnail images. // Use the rendered pages to set the corresponding thumbnail images.
var pagesCount = pdfViewer.pagesCount; let pagesCount = pdfViewer.pagesCount;
for (var pageIndex = 0; pageIndex < pagesCount; pageIndex++) { for (let pageIndex = 0; pageIndex < pagesCount; pageIndex++) {
var pageView = pdfViewer.getPageView(pageIndex); let pageView = pdfViewer.getPageView(pageIndex);
if (pageView && pageView.renderingState === RenderingStates.FINISHED) { if (pageView && pageView.renderingState === RenderingStates.FINISHED) {
var thumbnailView = thumbnailViewer.getThumbnail(pageIndex); let thumbnailView = pdfThumbnailViewer.getThumbnail(pageIndex);
thumbnailView.setImage(pageView); thumbnailView.setImage(pageView);
} }
} }
thumbnailViewer.scrollThumbnailIntoView(pdfViewer.currentPageNumber); pdfThumbnailViewer.scrollThumbnailIntoView(pdfViewer.currentPageNumber);
} }
/** /**
@ -347,7 +346,7 @@ class PDFSidebar {
return; return;
} }
var removeNotification = (view) => { let removeNotification = (view) => {
switch (view) { switch (view) {
case SidebarView.OUTLINE: case SidebarView.OUTLINE:
this.outlineButton.classList.remove(UI_NOTIFICATION_CLASS); this.outlineButton.classList.remove(UI_NOTIFICATION_CLASS);
@ -407,7 +406,7 @@ class PDFSidebar {
// Disable/enable views. // Disable/enable views.
this.eventBus.on('outlineloaded', (evt) => { this.eventBus.on('outlineloaded', (evt) => {
var outlineCount = evt.outlineCount; let outlineCount = evt.outlineCount;
this.outlineButton.disabled = !outlineCount; this.outlineButton.disabled = !outlineCount;
@ -421,7 +420,7 @@ class PDFSidebar {
}); });
this.eventBus.on('attachmentsloaded', (evt) => { this.eventBus.on('attachmentsloaded', (evt) => {
var attachmentsCount = evt.attachmentsCount; let attachmentsCount = evt.attachmentsCount;
this.attachmentsButton.disabled = !attachmentsCount; this.attachmentsButton.disabled = !attachmentsCount;

26
web/view_history.js
View File

@ -30,16 +30,16 @@ class ViewHistory {
this.cacheSize = cacheSize; this.cacheSize = cacheSize;
this._initializedPromise = this._readFromStorage().then((databaseStr) => { this._initializedPromise = this._readFromStorage().then((databaseStr) => {
var database = JSON.parse(databaseStr || '{}'); let database = JSON.parse(databaseStr || '{}');
if (!('files' in database)) { if (!('files' in database)) {
database.files = []; database.files = [];
} }
if (database.files.length >= this.cacheSize) { if (database.files.length >= this.cacheSize) {
database.files.shift(); database.files.shift();
} }
var index; let index;
for (var i = 0, length = database.files.length; i < length; i++) { for (let i = 0, length = database.files.length; i < length; i++) {
var branch = database.files[i]; let branch = database.files[i];
if (branch.fingerprint === this.fingerprint) { if (branch.fingerprint === this.fingerprint) {
index = i; index = i;
break; break;
@ -55,7 +55,7 @@ class ViewHistory {
_writeToStorage() { _writeToStorage() {
return new Promise((resolve) => { return new Promise((resolve) => {
var databaseStr = JSON.stringify(this.database); let databaseStr = JSON.stringify(this.database);
if (typeof PDFJSDev !== 'undefined' && if (typeof PDFJSDev !== 'undefined' &&
PDFJSDev.test('FIREFOX || MOZCENTRAL')) { PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
@ -73,16 +73,16 @@ class ViewHistory {
PDFJSDev.test('FIREFOX || MOZCENTRAL')) { PDFJSDev.test('FIREFOX || MOZCENTRAL')) {
resolve(sessionStorage.getItem('pdfjs.history')); resolve(sessionStorage.getItem('pdfjs.history'));
} else { } else {
var value = localStorage.getItem('pdfjs.history'); let value = localStorage.getItem('pdfjs.history');
// TODO: Remove this key-name conversion after a suitable time-frame. // TODO: Remove this key-name conversion after a suitable time-frame.
// Note that we only remove the old 'database' entry if it looks like // Note that we only remove the old 'database' entry if it looks like
// it was created by PDF.js, to avoid removing someone else's data. // it was created by PDF.js, to avoid removing someone else's data.
if (!value) { if (!value) {
var databaseStr = localStorage.getItem('database'); let databaseStr = localStorage.getItem('database');
if (databaseStr) { if (databaseStr) {
try { try {
var database = JSON.parse(databaseStr); let database = JSON.parse(databaseStr);
if (typeof database.files[0].fingerprint === 'string') { if (typeof database.files[0].fingerprint === 'string') {
localStorage.setItem('pdfjs.history', databaseStr); localStorage.setItem('pdfjs.history', databaseStr);
localStorage.removeItem('database'); localStorage.removeItem('database');
@ -105,7 +105,7 @@ class ViewHistory {
setMultiple(properties) { setMultiple(properties) {
return this._initializedPromise.then(() => { return this._initializedPromise.then(() => {
for (var name in properties) { for (let name in properties) {
this.file[name] = properties[name]; this.file[name] = properties[name];
} }
return this._writeToStorage(); return this._writeToStorage();
@ -114,17 +114,17 @@ class ViewHistory {
get(name, defaultValue) { get(name, defaultValue) {
return this._initializedPromise.then(() => { return this._initializedPromise.then(() => {
var val = this.file[name]; let val = this.file[name];
return val !== undefined ? val : defaultValue; return val !== undefined ? val : defaultValue;
}); });
} }
getMultiple(properties) { getMultiple(properties) {
return this._initializedPromise.then(() => { return this._initializedPromise.then(() => {
var values = Object.create(null); let values = Object.create(null);
for (var name in properties) { for (let name in properties) {
var val = this.file[name]; let val = this.file[name];
values[name] = val !== undefined ? val : properties[name]; values[name] = val !== undefined ? val : properties[name];
} }
return values; return values;