/**
* @license
* Copyright 2016 Google Inc. All rights reserved.
*
* 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.
*/
'use strict';
const Audit = require('../audit');
class ManifestShortNameLength extends Audit {
/**
* @override
*/
static get meta() {
return {
category: 'Manifest',
name: 'manifest-short-name-length',
description: 'Manifest\'s short_name won\'t be truncated when displayed on homescreen',
requiredArtifacts: ['manifest']
};
}
/**
* @param {!Artifacts} artifacts
* @return {!AuditResult}
*/
static audit(artifacts) {
let isShortNameShortEnough = false;
let debugString;
const manifest = artifacts.manifest.value;
const suggestedLength = 12;
if (manifest && manifest.short_name && manifest.short_name.value) {
// Historically, Chrome recommended 12 chars as the maximum length to prevent truncation.
// See #69 for more discussion.
isShortNameShortEnough = (manifest.short_name.value.length <= suggestedLength);
if (!isShortNameShortEnough) {
debugString = `${suggestedLength} chars is the suggested maximum homescreen label length`;
debugString += ` (Found: ${manifest.short_name.value.length} chars).`;
}
}
return ManifestShortNameLength.generateAuditResult({
value: isShortNameShortEnough,
debugString
});
}
}
module.exports = ManifestShortNameLength;
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