b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
65 lines
1.7 KiB
JavaScript
Executable file
65 lines
1.7 KiB
JavaScript
Executable file
define(function(require) {
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'use strict';
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/**
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* Helper class for getting available/used storage
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* required by *_storage.js
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*/
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var StorageHelper = {
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/**
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* formatting file size strings.
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*
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* @private
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* @param {Number} bytes size in Bytes
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* @param {Number} digits fixed float digits
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* @returns {Object}
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*/
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_getReadableFileSize: function getReadableFileSize(bytes, digits) {
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if (bytes === undefined) {
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return {};
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}
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var units = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB', 'ZB', 'YB'];
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var size, e;
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if (bytes) {
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e = Math.floor(Math.log(bytes) / Math.log(1024));
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size = (bytes / Math.pow(1024, e)).toFixed(digits || 0);
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} else {
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e = 0;
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size = '0';
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}
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return {
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size: size,
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unit: units[e]
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};
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},
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/**
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* attach formated size to certain element.
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*
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* @public
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* @param {Object} element html element
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* @param {String} l10nId l10n string id
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* @param {Number} sizesize in Bytes
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*/
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showFormatedSize: function showFormatedSize(element, l10nId, size) {
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if (size === undefined || isNaN(size)) {
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element.textContent = '';
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return;
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}
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// KB - 3 KB (nearest ones), MB, GB - 1.29 MB (nearest hundredth)
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var fixedDigits = (size < 1024 * 1024) ? 0 : 2;
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var sizeInfo = this._getReadableFileSize(size, fixedDigits);
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document.l10n.formatValue('byteUnit-' + sizeInfo.unit).then(unit => {
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document.l10n.setAttributes(element, l10nId, {
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size: sizeInfo.size,
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unit: unit
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});
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});
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}
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};
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return StorageHelper;
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});
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