gecko-dev/browser/devtools/shared/theme-switching.js

121 строка
3.7 KiB
JavaScript

/* 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/. */
(function() {
const DEVTOOLS_SKIN_URL = "chrome://browser/skin/devtools/";
let documentElement = document.documentElement;
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;
}
let display = computedStyle.display; // Save display value
documentElement.style.display = "none";
window.getComputedStyle(documentElement).display; // Flush
documentElement.style.display = display; // Restore
}
function switchTheme(newTheme, oldTheme) {
if (newTheme === oldTheme) {
return;
}
let oldThemeDef = gDevTools.getThemeDefinition(oldTheme);
// Unload all theme stylesheets related to the old theme.
if (oldThemeDef) {
for (let url of oldThemeDef.stylesheets) {
StylesheetUtils.removeSheet(window, url, "author");
}
}
// Load all stylesheets associated with the new theme.
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");
}
for (let url of newThemeDef.stylesheets) {
StylesheetUtils.loadSheet(window, url, "author");
}
// Floating scroll-bars like in OSX
let hiddenDOMWindow = Cc["@mozilla.org/appshell/appShellService;1"]
.getService(Ci.nsIAppShellService)
.hiddenDOMWindow;
// TODO: extensions might want to customize scrollbar styles too.
if (!hiddenDOMWindow.matchMedia("(-moz-overlay-scrollbars)").matches) {
let scrollbarsUrl = Services.io.newURI(
DEVTOOLS_SKIN_URL + "floating-scrollbars-light.css", null, null);
if (newTheme == "dark") {
StylesheetUtils.loadSheet(
window,
scrollbarsUrl,
"agent"
);
} else if (oldTheme == "dark") {
StylesheetUtils.removeSheet(
window,
scrollbarsUrl,
"agent"
);
}
forceStyle();
}
if (oldThemeDef) {
for (let name of oldThemeDef.classList) {
documentElement.classList.remove(name);
}
if (oldThemeDef.onUnapply) {
oldThemeDef.onUnapply(window, newTheme);
}
}
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);
}
function handlePrefChange(event, data) {
if (data.pref == "devtools.theme") {
switchTheme(data.newValue, data.oldValue);
}
}
const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource:///modules/devtools/gDevTools.jsm");
const {devtools} = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
const StylesheetUtils = devtools.require("sdk/stylesheet/utils");
if (documentElement.hasAttribute("force-theme")) {
switchTheme(documentElement.getAttribute("force-theme"));
} else {
switchTheme(Services.prefs.getCharPref("devtools.theme"));
gDevTools.on("pref-changed", handlePrefChange);
window.addEventListener("unload", function() {
gDevTools.off("pref-changed", handlePrefChange);
});
}
})();