/* -*- 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 PDFView, Promise, mozL10n, getPDFFileNameFromURL */ 'use strict'; var DocumentProperties = { overlayContainer: null, fileName: '', fileSize: '', visible: false, // Document property fields (in the viewer). fileNameField: null, fileSizeField: null, titleField: null, authorField: null, subjectField: null, keywordsField: null, creationDateField: null, modificationDateField: null, creatorField: null, producerField: null, versionField: null, pageCountField: null, initialize: function documentPropertiesInitialize(options) { this.overlayContainer = options.overlayContainer; // Set the document property fields. this.fileNameField = options.fileNameField; this.fileSizeField = options.fileSizeField; this.titleField = options.titleField; this.authorField = options.authorField; this.subjectField = options.subjectField; this.keywordsField = options.keywordsField; this.creationDateField = options.creationDateField; this.modificationDateField = options.modificationDateField; this.creatorField = options.creatorField; this.producerField = options.producerField; this.versionField = options.versionField; this.pageCountField = options.pageCountField; // Bind the event listener for the Close button. if (options.closeButton) { options.closeButton.addEventListener('click', this.hide.bind(this)); } this.dataAvailablePromise = new Promise(function (resolve) { this.resolveDataAvailable = resolve; }.bind(this)); // Bind the event listener for the Esc key (to close the dialog). window.addEventListener('keydown', function (e) { if (e.keyCode === 27) { // Esc key this.hide(); } }.bind(this)); }, getProperties: function documentPropertiesGetProperties() { if (!this.visible) { // If the dialog was closed before dataAvailablePromise was resolved, // don't bother updating the properties. return; } // Get the file name. this.fileName = getPDFFileNameFromURL(PDFView.url); // Get the file size. PDFView.pdfDocument.getDownloadInfo().then(function(data) { this.setFileSize(data.length); this.updateUI(this.fileSizeField, this.fileSize); }.bind(this)); // Get the other document properties. PDFView.pdfDocument.getMetadata().then(function(data) { var fields = [ { field: this.fileNameField, content: this.fileName }, // The fileSize field is updated once getDownloadInfo is resolved. { field: this.titleField, content: data.info.Title }, { field: this.authorField, content: data.info.Author }, { field: this.subjectField, content: data.info.Subject }, { field: this.keywordsField, content: data.info.Keywords }, { field: this.creationDateField, content: this.parseDate(data.info.CreationDate) }, { field: this.modificationDateField, content: this.parseDate(data.info.ModDate) }, { field: this.creatorField, content: data.info.Creator }, { field: this.producerField, content: data.info.Producer }, { field: this.versionField, content: data.info.PDFFormatVersion }, { field: this.pageCountField, content: PDFView.pdfDocument.numPages } ]; // Show the properties in the dialog. for (var item in fields) { var element = fields[item]; this.updateUI(element.field, element.content); } }.bind(this)); }, updateUI: function documentPropertiesUpdateUI(field, content) { if (field && content !== undefined && content !== '') { field.textContent = content; } }, setFileSize: function documentPropertiesSetFileSize(fileSize) { var kb = fileSize / 1024; if (kb < 1024) { this.fileSize = mozL10n.get('document_properties_kb', { size_kb: (+kb.toPrecision(3)).toLocaleString(), size_b: fileSize.toLocaleString() }, '{{size_kb}} KB ({{size_b}} bytes)'); } else { this.fileSize = mozL10n.get('document_properties_mb', { size_mb: (+(kb / 1024).toPrecision(3)).toLocaleString(), size_b: fileSize.toLocaleString() }, '{{size_mb}} MB ({{size_b}} bytes)'); } }, show: function documentPropertiesShow() { if (this.visible) { return; } this.visible = true; this.overlayContainer.classList.remove('hidden'); this.overlayContainer.lastElementChild.classList.remove('hidden'); this.dataAvailablePromise.then(function () { this.getProperties(); }.bind(this)); }, hide: function documentPropertiesClose() { if (!this.visible) { return; } this.visible = false; this.overlayContainer.classList.add('hidden'); this.overlayContainer.lastElementChild.classList.add('hidden'); }, parseDate: function documentPropertiesParseDate(inputDate) { // This is implemented according to the PDF specification (see // http://www.gnupdf.org/Date for an overview), but note that // Adobe Reader doesn't handle changing the date to universal time // and doesn't use the user's time zone (they're effectively ignoring // the HH' and mm' parts of the date string). var dateToParse = inputDate; if (dateToParse === undefined) { return ''; } // Remove the D: prefix if it is available. if (dateToParse.substring(0,2) === 'D:') { dateToParse = dateToParse.substring(2); } // Get all elements from the PDF date string. // JavaScript's Date object expects the month to be between // 0 and 11 instead of 1 and 12, so we're correcting for this. var year = parseInt(dateToParse.substring(0,4), 10); var month = parseInt(dateToParse.substring(4,6), 10) - 1; var day = parseInt(dateToParse.substring(6,8), 10); var hours = parseInt(dateToParse.substring(8,10), 10); var minutes = parseInt(dateToParse.substring(10,12), 10); var seconds = parseInt(dateToParse.substring(12,14), 10); var utRel = dateToParse.substring(14,15); var offsetHours = parseInt(dateToParse.substring(15,17), 10); var offsetMinutes = parseInt(dateToParse.substring(18,20), 10); // As per spec, utRel = 'Z' means equal to universal time. // The other cases ('-' and '+') have to be handled here. if (utRel == '-') { hours += offsetHours; minutes += offsetMinutes; } else if (utRel == '+') { hours -= offsetHours; minutes += offsetMinutes; } // Return the new date format from the user's locale. var date = new Date(Date.UTC(year, month, day, hours, minutes, seconds)); var dateString = date.toLocaleDateString(); var timeString = date.toLocaleTimeString(); return mozL10n.get('document_properties_date_string', {date: dateString, time: timeString}, '{{date}}, {{time}}'); } };