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https://github.com/zen-browser/pdf.js.git
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Refactor PDFDocumentProperties to be more class-like
This commit is contained in:
Tim van der Meij
parent
ca8f842d87
commit
7cf440c560
2 changed files with 177 additions and 179 deletions
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@ -18,42 +18,33 @@
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'use strict';
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var PDFDocumentProperties = {
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overlayName: null,
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rawFileSize: 0,
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// Document property fields (in the viewer).
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fileNameField: null,
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fileSizeField: null,
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titleField: null,
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authorField: null,
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subjectField: null,
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keywordsField: null,
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creationDateField: null,
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modificationDateField: null,
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creatorField: null,
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producerField: null,
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versionField: null,
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pageCountField: null,
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url: null,
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pdfDocument: null,
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initialize: function documentPropertiesInitialize(options) {
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/**
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* @class
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*/
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var PDFDocumentProperties = (function PDFDocumentPropertiesClosure() {
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/**
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* @constructs PDFDocumentProperties
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* @param {PDFDocumentPropertiesOptions} options
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*/
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function PDFDocumentProperties(options) {
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this.rawFileSize = 0;
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this.url = null;
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this.pdfDocument = null;
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this.overlayName = options.overlayName;
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// Set the document property fields.
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this.fileNameField = options.fileNameField;
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this.fileSizeField = options.fileSizeField;
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this.titleField = options.titleField;
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this.authorField = options.authorField;
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this.subjectField = options.subjectField;
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this.keywordsField = options.keywordsField;
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this.creationDateField = options.creationDateField;
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this.modificationDateField = options.modificationDateField;
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this.creatorField = options.creatorField;
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this.producerField = options.producerField;
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this.versionField = options.versionField;
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this.pageCountField = options.pageCountField;
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this.fileNameField = options.fileNameField || null;
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this.fileSizeField = options.fileSizeField || null;
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this.titleField = options.titleField || null;
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this.authorField = options.authorField || null;
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this.subjectField = options.subjectField || null;
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this.keywordsField = options.keywordsField || null;
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this.creationDateField = options.creationDateField || null;
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this.modificationDateField = options.modificationDateField || null;
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this.creatorField = options.creatorField || null;
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this.producerField = options.producerField || null;
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this.versionField = options.versionField || null;
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this.pageCountField = options.pageCountField || null;
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// Bind the event listener for the Close button.
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if (options.closeButton) {
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@ -65,135 +56,139 @@ var PDFDocumentProperties = {
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}.bind(this));
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OverlayManager.register(this.overlayName, this.close.bind(this));
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},
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}
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getProperties: function documentPropertiesGetProperties() {
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if (!OverlayManager.active) {
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// If the dialog was closed before dataAvailablePromise was resolved,
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// don't bother updating the properties.
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return;
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}
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// Get the file size (if it hasn't already been set).
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this.pdfDocument.getDownloadInfo().then(function(data) {
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if (data.length === this.rawFileSize) {
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PDFDocumentProperties.prototype = {
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getProperties: function PDFDocumentProperties_getProperties() {
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if (!OverlayManager.active) {
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// If the dialog was closed before dataAvailablePromise was resolved,
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// don't bother updating the properties.
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return;
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}
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this.setFileSize(data.length);
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this.updateUI(this.fileSizeField, this.parseFileSize());
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}.bind(this));
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// Get the file size (if it hasn't already been set).
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this.pdfDocument.getDownloadInfo().then(function(data) {
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if (data.length === this.rawFileSize) {
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return;
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}
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this.setFileSize(data.length);
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this.updateUI(this.fileSizeField, this.parseFileSize());
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}.bind(this));
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// Get the document properties.
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this.pdfDocument.getMetadata().then(function(data) {
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var fields = [
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{ field: this.fileNameField,
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content: getPDFFileNameFromURL(this.url) },
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{ field: this.fileSizeField, content: this.parseFileSize() },
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{ field: this.titleField, content: data.info.Title },
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{ field: this.authorField, content: data.info.Author },
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{ field: this.subjectField, content: data.info.Subject },
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{ field: this.keywordsField, content: data.info.Keywords },
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{ field: this.creationDateField,
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content: this.parseDate(data.info.CreationDate) },
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{ field: this.modificationDateField,
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content: this.parseDate(data.info.ModDate) },
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{ field: this.creatorField, content: data.info.Creator },
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{ field: this.producerField, content: data.info.Producer },
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{ field: this.versionField, content: data.info.PDFFormatVersion },
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{ field: this.pageCountField, content: this.pdfDocument.numPages }
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];
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// Get the document properties.
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this.pdfDocument.getMetadata().then(function(data) {
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var fields = [
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{ field: this.fileNameField,
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content: getPDFFileNameFromURL(this.url) },
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{ field: this.fileSizeField, content: this.parseFileSize() },
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{ field: this.titleField, content: data.info.Title },
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{ field: this.authorField, content: data.info.Author },
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{ field: this.subjectField, content: data.info.Subject },
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{ field: this.keywordsField, content: data.info.Keywords },
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{ field: this.creationDateField,
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content: this.parseDate(data.info.CreationDate) },
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{ field: this.modificationDateField,
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content: this.parseDate(data.info.ModDate) },
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{ field: this.creatorField, content: data.info.Creator },
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{ field: this.producerField, content: data.info.Producer },
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{ field: this.versionField, content: data.info.PDFFormatVersion },
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{ field: this.pageCountField, content: this.pdfDocument.numPages }
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];
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// Show the properties in the dialog.
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for (var item in fields) {
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var element = fields[item];
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this.updateUI(element.field, element.content);
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// Show the properties in the dialog.
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for (var item in fields) {
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var element = fields[item];
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this.updateUI(element.field, element.content);
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}
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}.bind(this));
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},
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updateUI: function PDFDocumentProperties_updateUI(field, content) {
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if (field && content !== undefined && content !== '') {
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field.textContent = content;
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}
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}.bind(this));
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},
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},
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updateUI: function documentPropertiesUpdateUI(field, content) {
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if (field && content !== undefined && content !== '') {
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field.textContent = content;
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setFileSize: function PDFDocumentProperties_setFileSize(fileSize) {
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if (fileSize > 0) {
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this.rawFileSize = fileSize;
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}
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},
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parseFileSize: function PDFDocumentProperties_parseFileSize() {
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var fileSize = this.rawFileSize, kb = fileSize / 1024;
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if (!kb) {
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return;
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} else if (kb < 1024) {
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return mozL10n.get('document_properties_kb', {
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size_kb: (+kb.toPrecision(3)).toLocaleString(),
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size_b: fileSize.toLocaleString()
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}, '{{size_kb}} KB ({{size_b}} bytes)');
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} else {
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return mozL10n.get('document_properties_mb', {
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size_mb: (+(kb / 1024).toPrecision(3)).toLocaleString(),
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size_b: fileSize.toLocaleString()
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}, '{{size_mb}} MB ({{size_b}} bytes)');
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}
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},
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open: function PDFDocumentProperties_open() {
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Promise.all([OverlayManager.open(this.overlayName),
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this.dataAvailablePromise]).then(function () {
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this.getProperties();
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}.bind(this));
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},
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close: function PDFDocumentProperties_close() {
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OverlayManager.close(this.overlayName);
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},
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parseDate: function PDFDocumentProperties_parseDate(inputDate) {
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// This is implemented according to the PDF specification, but note that
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// Adobe Reader doesn't handle changing the date to universal time
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// and doesn't use the user's time zone (they're effectively ignoring
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// the HH' and mm' parts of the date string).
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var dateToParse = inputDate;
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if (dateToParse === undefined) {
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return '';
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}
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// Remove the D: prefix if it is available.
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if (dateToParse.substring(0,2) === 'D:') {
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dateToParse = dateToParse.substring(2);
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}
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// Get all elements from the PDF date string.
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// JavaScript's Date object expects the month to be between
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// 0 and 11 instead of 1 and 12, so we're correcting for this.
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var year = parseInt(dateToParse.substring(0,4), 10);
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var month = parseInt(dateToParse.substring(4,6), 10) - 1;
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var day = parseInt(dateToParse.substring(6,8), 10);
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var hours = parseInt(dateToParse.substring(8,10), 10);
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var minutes = parseInt(dateToParse.substring(10,12), 10);
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var seconds = parseInt(dateToParse.substring(12,14), 10);
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var utRel = dateToParse.substring(14,15);
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var offsetHours = parseInt(dateToParse.substring(15,17), 10);
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var offsetMinutes = parseInt(dateToParse.substring(18,20), 10);
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// As per spec, utRel = 'Z' means equal to universal time.
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// The other cases ('-' and '+') have to be handled here.
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if (utRel === '-') {
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hours += offsetHours;
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minutes += offsetMinutes;
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} else if (utRel === '+') {
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hours -= offsetHours;
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minutes -= offsetMinutes;
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}
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// Return the new date format from the user's locale.
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var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
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var dateString = date.toLocaleDateString();
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var timeString = date.toLocaleTimeString();
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return mozL10n.get('document_properties_date_string',
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{date: dateString, time: timeString},
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'{{date}}, {{time}}');
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}
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},
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};
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setFileSize: function documentPropertiesSetFileSize(fileSize) {
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if (fileSize > 0) {
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this.rawFileSize = fileSize;
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}
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},
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parseFileSize: function documentPropertiesParseFileSize() {
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var fileSize = this.rawFileSize, kb = fileSize / 1024;
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if (!kb) {
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return;
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} else if (kb < 1024) {
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return mozL10n.get('document_properties_kb', {
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size_kb: (+kb.toPrecision(3)).toLocaleString(),
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size_b: fileSize.toLocaleString()
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}, '{{size_kb}} KB ({{size_b}} bytes)');
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} else {
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return mozL10n.get('document_properties_mb', {
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size_mb: (+(kb / 1024).toPrecision(3)).toLocaleString(),
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size_b: fileSize.toLocaleString()
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}, '{{size_mb}} MB ({{size_b}} bytes)');
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}
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},
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open: function documentPropertiesOpen() {
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Promise.all([OverlayManager.open(this.overlayName),
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this.dataAvailablePromise]).then(function () {
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this.getProperties();
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}.bind(this));
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},
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close: function documentPropertiesClose() {
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OverlayManager.close(this.overlayName);
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},
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parseDate: function documentPropertiesParseDate(inputDate) {
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// This is implemented according to the PDF specification, but note that
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// Adobe Reader doesn't handle changing the date to universal time
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// and doesn't use the user's time zone (they're effectively ignoring
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// the HH' and mm' parts of the date string).
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var dateToParse = inputDate;
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if (dateToParse === undefined) {
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return '';
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}
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// Remove the D: prefix if it is available.
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if (dateToParse.substring(0,2) === 'D:') {
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dateToParse = dateToParse.substring(2);
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}
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// Get all elements from the PDF date string.
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// JavaScript's Date object expects the month to be between
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// 0 and 11 instead of 1 and 12, so we're correcting for this.
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var year = parseInt(dateToParse.substring(0,4), 10);
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var month = parseInt(dateToParse.substring(4,6), 10) - 1;
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var day = parseInt(dateToParse.substring(6,8), 10);
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var hours = parseInt(dateToParse.substring(8,10), 10);
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var minutes = parseInt(dateToParse.substring(10,12), 10);
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var seconds = parseInt(dateToParse.substring(12,14), 10);
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var utRel = dateToParse.substring(14,15);
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var offsetHours = parseInt(dateToParse.substring(15,17), 10);
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var offsetMinutes = parseInt(dateToParse.substring(18,20), 10);
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// As per spec, utRel = 'Z' means equal to universal time.
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// The other cases ('-' and '+') have to be handled here.
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if (utRel === '-') {
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hours += offsetHours;
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minutes += offsetMinutes;
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} else if (utRel === '+') {
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hours -= offsetHours;
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minutes -= offsetMinutes;
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}
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// Return the new date format from the user's locale.
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var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds));
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var dateString = date.toLocaleDateString();
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var timeString = date.toLocaleTimeString();
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return mozL10n.get('document_properties_date_string',
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{date: dateString, time: timeString},
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'{{date}}, {{time}}');
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}
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};
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return PDFDocumentProperties;
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})();
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