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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";
/**
* Colors for themes taken from:
* https://developer.mozilla.org/en-US/docs/Tools/DevToolsColors
*/
const Services = require("Services");
const { gDevTools } = require("devtools/client/framework/devtools");
const variableFileContents = require("raw!devtools/client/themes/variables.css");
const THEME_SELECTOR_STRINGS = {
light: ":root.theme-light {",
dark: ":root.theme-dark {",
firebug: ":root.theme-firebug {"
};
/**
* Takes a theme name and returns the contents of its variable rule block.
* The first time this runs fetches the variables CSS file and caches it.
*/
function getThemeFile(name) {
// If there's no theme expected for this name, use `light` as default.
let selector = THEME_SELECTOR_STRINGS[name] ||
THEME_SELECTOR_STRINGS.light;
// This is a pretty naive way to find the contents between:
// selector {
// name: val;
// }
// There is test coverage for this feature (browser_theme.js)
// so if an } is introduced in the variables file it will catch that.
let theme = variableFileContents;
theme = theme.substring(theme.indexOf(selector));
theme = theme.substring(0, theme.indexOf("}"));
return theme;
}
/**
* Returns the string value of the current theme,
* like "dark" or "light".
*/
const getTheme = exports.getTheme = () => {
return Services.prefs.getCharPref("devtools.theme");
};
/**
* Returns a color indicated by `type` (like "toolbar-background", or
* "highlight-red"), with the ability to specify a theme, or use whatever the
* current theme is if left unset. If theme not found, falls back to "light"
* theme. Returns null if the type cannot be found for the theme given.
*/
/* eslint-disable no-unused-vars */
const getColor = exports.getColor = (type, theme) => {
let themeName = theme || getTheme();
let themeFile = getThemeFile(themeName);
let match = themeFile.match(new RegExp("--theme-" + type + ": (.*);"));
// Return the appropriate variable in the theme, or otherwise, null.
return match ? match[1] : null;
};
/**
* Mimics selecting the theme selector in the toolbox;
* sets the preference and emits an event on gDevTools to trigger
* the themeing.
*/
const setTheme = exports.setTheme = (newTheme) => {
let oldTheme = getTheme();
Services.prefs.setCharPref("devtools.theme", newTheme);
gDevTools.emit("pref-changed", {
pref: "devtools.theme",
newValue: newTheme,
oldValue: oldTheme
});
};
/* eslint-enable */
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