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
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/* 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 () {
const { utils: Cu } = Components;
const { require } = Cu.import("resource://devtools/shared/Loader.jsm", {});
const Services = require("Services");
const { gDevTools } = require("devtools/client/framework/devtools");
const { watchCSS } = require("devtools/client/shared/css-reload");
let documentElement = document.documentElement;
let os;
let platform = navigator.platform;
if (platform.startsWith("Win")) {
os = "win";
} else if (platform.startsWith("Mac")) {
os = "mac";
} else {
os = "linux";
}
documentElement.setAttribute("platform", os);
// no-theme attributes allows to just est the platform attribute
// to have per-platform CSS working correctly.
if (documentElement.getAttribute("no-theme") === "true") {
return;
}
let devtoolsStyleSheets = new WeakMap();
let gOldTheme = "";
function forceStyle() {
let computedStyle = window.getComputedStyle(documentElement);
if (!computedStyle) {
// Null when documentElement is not ready. This method is anyways not
// required then as scrollbars would be in their state without flushing.
return;
}
// Save display value
let display = computedStyle.display;
documentElement.style.display = "none";
// Flush
window.getComputedStyle(documentElement).display;
// Restore
documentElement.style.display = display;
}
/*
* Append a new processing instruction and return an object with
* - styleSheet: DOMNode
* - loadPromise: Promise that resolves once the sheets loads or errors
*/
function appendStyleSheet(url) {
let styleSheetAttr = `href="${url}" type="text/css"`;
let styleSheet = document.createProcessingInstruction(
"xml-stylesheet", styleSheetAttr);
let loadPromise = new Promise((resolve, reject) => {
function onload() {
styleSheet.removeEventListener("load", onload);
styleSheet.removeEventListener("error", onerror);
resolve();
}
function onerror() {
styleSheet.removeEventListener("load", onload);
styleSheet.removeEventListener("error", onerror);
reject("Failed to load theme file " + url);
}
styleSheet.addEventListener("load", onload);
styleSheet.addEventListener("error", onerror);
});
document.insertBefore(styleSheet, documentElement);
return {styleSheet, loadPromise};
}
/*
* Notify the window that a theme switch finished so tests can check the DOM
*/
function notifyWindow() {
window.dispatchEvent(new CustomEvent("theme-switch-complete", {}));
}
/*
* Apply all the sheets from `newTheme` and remove all of the sheets
* from `oldTheme`
*/
function switchTheme(newTheme) {
if (newTheme === gOldTheme) {
return;
}
let oldTheme = gOldTheme;
gOldTheme = newTheme;
let oldThemeDef = gDevTools.getThemeDefinition(oldTheme);
let newThemeDef = gDevTools.getThemeDefinition(newTheme);
// The theme might not be available anymore (e.g. uninstalled)
// Use the default one.
if (!newThemeDef) {
newThemeDef = gDevTools.getThemeDefinition("light");
}
// Store the sheets in a WeakMap for access later when the theme gets
// unapplied. It's hard to query for processing instructions so this
// is an easy way to access them later without storing a property on
// the window
devtoolsStyleSheets.set(newThemeDef, []);
let loadEvents = [];
for (let url of newThemeDef.stylesheets) {
let {styleSheet, loadPromise} = appendStyleSheet(url);
devtoolsStyleSheets.get(newThemeDef).push(styleSheet);
loadEvents.push(loadPromise);
}
try {
const StylesheetUtils = require("sdk/stylesheet/utils");
const SCROLLBARS_URL = "chrome://devtools/skin/floating-scrollbars-dark-theme.css";
// TODO: extensions might want to customize scrollbar styles too.
if (!Services.appShell.hiddenDOMWindow
.matchMedia("(-moz-overlay-scrollbars)").matches) {
if (newTheme == "dark") {
StylesheetUtils.loadSheet(window, SCROLLBARS_URL, "agent");
} else if (oldTheme == "dark") {
StylesheetUtils.removeSheet(window, SCROLLBARS_URL, "agent");
}
forceStyle();
}
} catch (e) {
console.warn("customize scrollbar styles is only supported in firefox");
}
Promise.all(loadEvents).then(() => {
// Unload all stylesheets and classes from the old theme.
if (oldThemeDef) {
for (let name of oldThemeDef.classList) {
documentElement.classList.remove(name);
}
for (let sheet of devtoolsStyleSheets.get(oldThemeDef) || []) {
sheet.remove();
}
if (oldThemeDef.onUnapply) {
oldThemeDef.onUnapply(window, newTheme);
}
}
// Load all stylesheets and classes from the new theme.
for (let name of newThemeDef.classList) {
documentElement.classList.add(name);
}
if (newThemeDef.onApply) {
newThemeDef.onApply(window, oldTheme);
}
// Final notification for further theme-switching related logic.
gDevTools.emit("theme-switched", window, newTheme, oldTheme);
notifyWindow();
}, console.error.bind(console));
}
function handlePrefChange() {
switchTheme(Services.prefs.getCharPref("devtools.theme"));
}
if (documentElement.hasAttribute("force-theme")) {
switchTheme(documentElement.getAttribute("force-theme"));
} else {
switchTheme(Services.prefs.getCharPref("devtools.theme"));
Services.prefs.addObserver("devtools.theme", handlePrefChange, false);
window.addEventListener("unload", function () {
Services.prefs.removeObserver("devtools.theme", handlePrefChange);
}, { once: true });
}
watchCSS(window);
})();
|
