1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
/* 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/. */
/* eslint-env browser */
"use strict";
function stylesheetLoadPromise(styleSheet, url) {
return new Promise((resolve, reject) => {
styleSheet.addEventListener("load", resolve, { once: true });
styleSheet.addEventListener("error", reject, { once: true });
});
}
/*
* Put the DevTools theme stylesheet into the provided chrome document.
*
* @param {Document} doc
* The chrome document where the stylesheet should be appended.
* @param {String} url
* The url of the stylesheet to load.
* @return {Object}
* - styleSheet {XMLStylesheetProcessingInstruction} the instruction node created.
* - loadPromise {Promise} that will resolve/reject when the stylesheet finishes
* or fails to load.
*/
function appendStyleSheet(doc, url) {
if (doc.head) {
const styleSheet = doc.createElement("link");
styleSheet.setAttribute("rel", "stylesheet");
styleSheet.setAttribute("href", url);
const loadPromise = stylesheetLoadPromise(styleSheet);
// In order to make overriding styles sane, we want the order of loaded
// sheets to be something like this:
// global.css
// *-theme.css (the file loaded here)
// document-specific-sheet.css
// See Bug 1582786 / https://phabricator.services.mozilla.com/D46530#inline-284756.
const globalSheet = doc.head.querySelector(
"link[href='chrome://global/skin/global.css']"
);
if (globalSheet) {
globalSheet.after(styleSheet);
} else {
doc.head.prepend(styleSheet);
}
return { styleSheet, loadPromise };
}
const styleSheet = doc.createProcessingInstruction(
"xml-stylesheet",
`href="${url}" type="text/css"`
);
const loadPromise = stylesheetLoadPromise(styleSheet);
doc.insertBefore(styleSheet, doc.documentElement);
return { styleSheet, loadPromise };
}
exports.appendStyleSheet = appendStyleSheet;
|
