227 lines
7.8 KiB
JavaScript
227 lines
7.8 KiB
JavaScript
/* -*- 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 Promise, mozL10n, getPDFFileNameFromURL, OverlayManager */
|
|
|
|
'use strict';
|
|
|
|
/**
|
|
* @typedef {Object} PDFDocumentPropertiesOptions
|
|
* @property {string} overlayName - Name/identifier for the overlay.
|
|
* @property {Object} fields - Names and elements of the overlay's fields.
|
|
* @property {HTMLButtonElement} closeButton - Button for closing the overlay.
|
|
*/
|
|
|
|
/**
|
|
* @class
|
|
*/
|
|
var PDFDocumentProperties = (function PDFDocumentPropertiesClosure() {
|
|
/**
|
|
* @constructs PDFDocumentProperties
|
|
* @param {PDFDocumentPropertiesOptions} options
|
|
*/
|
|
function PDFDocumentProperties(options) {
|
|
this.fields = options.fields;
|
|
this.overlayName = options.overlayName;
|
|
|
|
this.rawFileSize = 0;
|
|
this.url = null;
|
|
this.pdfDocument = null;
|
|
|
|
// Bind the event listener for the Close button.
|
|
if (options.closeButton) {
|
|
options.closeButton.addEventListener('click', this.close.bind(this));
|
|
}
|
|
|
|
this.dataAvailablePromise = new Promise(function (resolve) {
|
|
this.resolveDataAvailable = resolve;
|
|
}.bind(this));
|
|
|
|
OverlayManager.register(this.overlayName, this.close.bind(this));
|
|
}
|
|
|
|
PDFDocumentProperties.prototype = {
|
|
/**
|
|
* Open the document properties overlay.
|
|
*/
|
|
open: function PDFDocumentProperties_open() {
|
|
Promise.all([OverlayManager.open(this.overlayName),
|
|
this.dataAvailablePromise]).then(function () {
|
|
this._getProperties();
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* Close the document properties overlay.
|
|
*/
|
|
close: function PDFDocumentProperties_close() {
|
|
OverlayManager.close(this.overlayName);
|
|
},
|
|
|
|
/**
|
|
* Set the file size of the PDF document. This method is used to
|
|
* update the file size in the document properties overlay once it
|
|
* is known so we do not have to wait until the entire file is loaded.
|
|
*
|
|
* @param {number} fileSize - The file size of the PDF document.
|
|
*/
|
|
setFileSize: function PDFDocumentProperties_setFileSize(fileSize) {
|
|
if (fileSize > 0) {
|
|
this.rawFileSize = fileSize;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Set a reference to the PDF document and the URL in order
|
|
* to populate the overlay fields with the document properties.
|
|
* Note that the overlay will contain no information if this method
|
|
* is not called.
|
|
*
|
|
* @param {Object} pdfDocument - A reference to the PDF document.
|
|
* @param {string} url - The URL of the document.
|
|
*/
|
|
setDocumentAndUrl:
|
|
function PDFDocumentProperties_setDocumentAndUrl(pdfDocument, url) {
|
|
this.pdfDocument = pdfDocument;
|
|
this.url = url;
|
|
this.resolveDataAvailable();
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_getProperties: function PDFDocumentProperties_getProperties() {
|
|
if (!OverlayManager.active) {
|
|
// If the dialog was closed before dataAvailablePromise was resolved,
|
|
// don't bother updating the properties.
|
|
return;
|
|
}
|
|
// Get the file size (if it hasn't already been set).
|
|
this.pdfDocument.getDownloadInfo().then(function(data) {
|
|
if (data.length === this.rawFileSize) {
|
|
return;
|
|
}
|
|
this.setFileSize(data.length);
|
|
this._updateUI(this.fields['fileSize'], this._parseFileSize());
|
|
}.bind(this));
|
|
|
|
// Get the document properties.
|
|
this.pdfDocument.getMetadata().then(function(data) {
|
|
var content = {
|
|
'fileName': getPDFFileNameFromURL(this.url),
|
|
'fileSize': this._parseFileSize(),
|
|
'title': data.info.Title,
|
|
'author': data.info.Author,
|
|
'subject': data.info.Subject,
|
|
'keywords': data.info.Keywords,
|
|
'creationDate': this._parseDate(data.info.CreationDate),
|
|
'modificationDate': this._parseDate(data.info.ModDate),
|
|
'creator': data.info.Creator,
|
|
'producer': data.info.Producer,
|
|
'version': data.info.PDFFormatVersion,
|
|
'pageCount': this.pdfDocument.numPages
|
|
};
|
|
|
|
// Show the properties in the dialog.
|
|
for (var identifier in content) {
|
|
this._updateUI(this.fields[identifier], content[identifier]);
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_updateUI: function PDFDocumentProperties_updateUI(field, content) {
|
|
if (field && content !== undefined && content !== '') {
|
|
field.textContent = content;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parseFileSize: function PDFDocumentProperties_parseFileSize() {
|
|
var fileSize = this.rawFileSize, kb = fileSize / 1024;
|
|
if (!kb) {
|
|
return;
|
|
} else if (kb < 1024) {
|
|
return mozL10n.get('document_properties_kb', {
|
|
size_kb: (+kb.toPrecision(3)).toLocaleString(),
|
|
size_b: fileSize.toLocaleString()
|
|
}, '{{size_kb}} KB ({{size_b}} bytes)');
|
|
} else {
|
|
return mozL10n.get('document_properties_mb', {
|
|
size_mb: (+(kb / 1024).toPrecision(3)).toLocaleString(),
|
|
size_b: fileSize.toLocaleString()
|
|
}, '{{size_mb}} MB ({{size_b}} bytes)');
|
|
}
|
|
},
|
|
|
|
/**
|
|
* @private
|
|
*/
|
|
_parseDate: function PDFDocumentProperties_parseDate(inputDate) {
|
|
// This is implemented according to the PDF specification, 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}}');
|
|
}
|
|
};
|
|
|
|
return PDFDocumentProperties;
|
|
})();
|