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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
module.metadata = {
"stability": "experimental"
};
const { Cc, Ci } = require("chrome");
const { Class } = require("../core/heritage");
const { URL, isLocalURL } = require('../url');
const events = require("../system/events");
const { loadSheet, removeSheet, isTypeValid } = require("./utils");
const { isString } = require("../lang/type");
const { attachTo, detachFrom } = require("../content/mod");
const { data } = require('../self');
const { freeze, create } = Object;
function Style({ source, uri, type }) {
source = source == null ? null : freeze([].concat(source));
uri = uri == null ? null : freeze([].concat(uri));
type = type == null ? "author" : type;
if (source && !source.every(isString))
throw new Error('Style.source must be a string or an array of strings.');
if (uri && !uri.every(isLocalURL))
throw new Error('Style.uri must be a local URL or an array of local URLs');
if (type && !isTypeValid(type))
throw new Error('Style.type must be "agent", "user" or "author"');
return freeze(create(Style.prototype, {
"source": { value: source, enumerable: true },
"uri": { value: uri, enumerable: true },
"type": { value: type, enumerable: true }
}));
};
exports.Style = Style;
attachTo.define(Style, function (style, window) {
if (style.uri) {
for (let uri of style.uri)
loadSheet(window, data.url(uri), style.type);
}
if (style.source) {
let uri = "data:text/css;charset=utf-8,";
uri += encodeURIComponent(style.source.join(""));
loadSheet(window, uri, style.type);
}
});
detachFrom.define(Style, function (style, window) {
if (style.uri)
for (let uri of style.uri)
removeSheet(window, data.url(uri));
if (style.source) {
let uri = "data:text/css;charset=utf-8,";
uri += encodeURIComponent(style.source.join(""));
removeSheet(window, uri, style.type);
}
});
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