b2g/components/OopCommandLine.js

changeset 0
6474c204b198
     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/b2g/components/OopCommandLine.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,47 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
     1.9 +Cu.import("resource://gre/modules/XPCOMUtils.jsm");
    1.10 +XPCOMUtils.defineLazyModuleGetter(this, "Services", "resource://gre/modules/Services.jsm");
    1.11 +
    1.12 +function oopCommandlineHandler() {
    1.13 +}
    1.14 +
    1.15 +oopCommandlineHandler.prototype = {
    1.16 +    handle: function(cmdLine) {
    1.17 +        let oopFlag = cmdLine.handleFlag("oop", false);
    1.18 +        if (oopFlag) {
    1.19 +            /**
    1.20 +             * Manipulate preferences by adding to the *default* branch.  Adding
    1.21 +             * to the default branch means the changes we make won"t get written
    1.22 +             * back to user preferences.
    1.23 +             */
    1.24 +            let prefs = Services.prefs
    1.25 +            let branch = prefs.getDefaultBranch("");
    1.26 +
    1.27 +            try {
    1.28 +                // Turn on all OOP services, making desktop run similar to phone
    1.29 +                // environment
    1.30 +                branch.setBoolPref("dom.ipc.tabs.disabled", false);
    1.31 +                branch.setBoolPref("layers.acceleration.disabled", false);
    1.32 +                branch.setBoolPref("layers.offmainthreadcomposition.enabled", true);
    1.33 +                branch.setBoolPref("layers.offmainthreadcomposition.async-animations", true);
    1.34 +                branch.setBoolPref("layers.async-video.enabled", true);
    1.35 +                branch.setBoolPref("layers.async-pan-zoom.enabled", true);
    1.36 +                branch.setCharPref("gfx.content.azure.backends", "cairo");
    1.37 +            } catch (e) { }
    1.38 +
    1.39 +        }
    1.40 +        if (cmdLine.state == Ci.nsICommandLine.STATE_REMOTE_AUTO) {
    1.41 +            cmdLine.preventDefault = true;
    1.42 +        }
    1.43 +    },
    1.44 +
    1.45 +    helpInfo: "  -oop         Use out-of-process model in B2G\n",
    1.46 +    classID: Components.ID("{e30b0e13-2d12-4cb0-bc4c-4e617a1bf76e}"),
    1.47 +    QueryInterface: XPCOMUtils.generateQI([Ci.nsICommandLineHandler]),
    1.48 +};
    1.49 +
    1.50 +this.NSGetFactory = XPCOMUtils.generateNSGetFactory([oopCommandlineHandler]);

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