diff options
Diffstat (limited to 'tools/addon-sdk-1.4/packages/development-mode/lib/bootstrap.js')
-rw-r--r-- | tools/addon-sdk-1.4/packages/development-mode/lib/bootstrap.js | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.4/packages/development-mode/lib/bootstrap.js b/tools/addon-sdk-1.4/packages/development-mode/lib/bootstrap.js new file mode 100644 index 0000000..6986c60 --- /dev/null +++ b/tools/addon-sdk-1.4/packages/development-mode/lib/bootstrap.js @@ -0,0 +1,153 @@ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla Public License Version + * 1.1 (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * http://www.mozilla.org/MPL/ + * + * Software distributed under the License is distributed on an "AS IS" basis, + * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License + * for the specific language governing rights and limitations under the + * License. + * + * The Original Code is Jetpack SDK. + * + * The Initial Developer of the Original Code is + * Atul Varma <atul@mozilla.com>. + * Portions created by the Initial Developer are Copyright (C) 2010 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * Atul Varma <atul@mozilla.com> + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +"use strict"; + +var {Cc,Cm,Ci,components} = require("chrome"); +var file = require("api-utils/file"); + +// A global registry of all Jetpack Programs that we're responsible +// for loading and unloading. Keys are XPCOM contract IDs of +// the harness services of Jetpack Programs, values are the +// wrappedJSObject of the harness services themselves. +var gServices = {}; + +var manager = Cm; +manager.QueryInterface(Ci.nsIComponentRegistrar); + +// Attempts to unload and then unregister the XPCOM component with the +// given contract ID, if it is managed by us. +function maybeUnload(contractID) { + if (contractID in gServices) { + try { + gServices[contractID].unload(); + } catch (e) { + console.exception(e); + } + var classID = gServices[contractID].classID; + delete gServices[contractID]; + maybeUnregister(contractID, classID); + } +} + +// Attempts to unregister the XPCOM component with the given +// contract ID and class ID, if it is managed by us. +function maybeUnregister(contractID, classID) { + try { + var factory = manager.getClassObjectByContractID(contractID, + Ci.nsIFactory); + manager.unregisterFactory(classID, factory); + } catch (e) { + console.exception(e); + } +} + +// A quit callable that is passed to the main() function of any +// Jetpack Program we manage. Whenever said program quits, we will +// automatically take care of unloading and unregistering it. +function makeQuit(contractID) { + return function quit(status) { + maybeUnload(contractID); + }; +} + +function logError(e) { + console.exception(e); +} + +function makeUnloader(contractID) { + return {unload: function unload() { maybeUnload(contractID); }}; +} + +// The main public function of this module; given a JSON harness options +// blob and a root directory of where the Jetpack Program +// is installed, takes care of loading the program, running it, and +// unloading its resources when they're no longer needed. +exports.run = function run(options, rootDirPath, dump) { + var harnessService; + var contractID = options.bootstrap.contractID; + var classID = components.ID(options.bootstrap.classID); + + maybeUnload(contractID); + options.runImmediately = true; + + var rootDir = Cc["@mozilla.org/file/local;1"] + .createInstance(Ci.nsILocalFile); + rootDir.initWithPath(rootDirPath); + + // Note that we're reusing our own bootstrapping code here, rather + // than directly invoking the target Jetpack Program's bootstrapping + // infrastructure. If one works differently than the other, + // we could have problems, but for now we'll assume that this + // bootstrapping infrastructure is stable. + var HarnessService = packaging.buildHarnessService(rootDir, + dump, + logError, + makeQuit(contractID), + options); + var factory = HarnessService.prototype._xpcom_factory; + var proto = HarnessService.prototype; + manager.registerFactory(proto.classID, + proto.classDescription, + proto.contractID, + factory); + + try { + harnessService = factory.createInstance(null, Ci.nsISupports); + harnessService = harnessService.wrappedJSObject; + gServices[contractID] = harnessService; + harnessService.load(); + return makeUnloader(contractID, classID); + } catch (e) { + console.exception(e); + return null; + } +}; + +// When this module is unloaded, shut down all currently-running +// Jetpack Programs we manage and free their resources. +require("unload").when( + function() { + var argLists = []; + for (contractID in gServices) + argLists.push([contractID, gServices[contractID].classID]); + + argLists.forEach( + function(args) { + maybeUnload.apply(undefined, args); + }); + }); |