Bug 867485: Move the devtools loader into toolkit/ r=jwalker

browser/base/content/nsContextMenu.js

@@ -437,7 +437,7 @@ nsContextMenu.prototype = {
   },
 
   inspectNode: function CM_inspectNode() {
-    let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+    let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
     let gBrowser = this.browser.ownerDocument.defaultView.gBrowser;
     let tt = devtools.TargetFactory.forTab(gBrowser.selectedTab);
     return gDevTools.showToolbox(tt, "inspector").then(function(toolbox) {

browser/devtools/commandline/BuiltinCommands.jsm

@@ -20,7 +20,7 @@ Cu.import("resource:///modules/devtools/shared/event-emitter.js");
 XPCOMUtils.defineLazyModuleGetter(this, "gDevTools",
                                   "resource:///modules/devtools/gDevTools.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-                                  "resource:///modules/devtools/gDevTools.jsm");
+                                  "resource://gre/modules/devtools/Loader.jsm");
 
 /* CmdAddon ---------------------------------------------------------------- */
 

browser/devtools/commandline/test/helpers.js

@@ -24,7 +24,7 @@ let require = (Cu.import("resource://gre/modules/devtools/Require.jsm", {})).req
 Components.utils.import("resource:///modules/devtools/gcli.jsm", {});
 
 let console = (Cu.import("resource://gre/modules/devtools/Console.jsm", {})).console;
-let devtools = (Cu.import("resource:///modules/devtools/gDevTools.jsm", {})).devtools;
+let devtools = (Cu.import("resource://gre/modules/devtools/Loader.jsm", {})).devtools;
 let TargetFactory = devtools.TargetFactory;
 
 let Promise = (Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js", {})).Promise;

browser/devtools/debugger/test/head.js

@@ -12,6 +12,7 @@ Cu.import("resource://gre/modules/devtools/dbg-server.jsm", tempScope);
 Cu.import("resource://gre/modules/devtools/dbg-client.jsm", tempScope);
 Cu.import("resource:///modules/source-editor.jsm", tempScope);
 Cu.import("resource:///modules/devtools/gDevTools.jsm", tempScope);
+Cu.import("resource://gre/modules/devtools/Loader.jsm", tempScope);
 let Services = tempScope.Services;
 let SourceEditor = tempScope.SourceEditor;
 let DebuggerServer = tempScope.DebuggerServer;

browser/devtools/fontinspector/test/browser_fontinspector.js

@@ -2,7 +2,8 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
 let tempScope = {};
-let {devtools, gDevTools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {gDevTools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 let DOMUtils = Cc["@mozilla.org/inspector/dom-utils;1"].getService(Ci.inIDOMUtils);

browser/devtools/framework/connect/connect.js

@@ -10,7 +10,8 @@ const Cu = Components.utils;
 Cu.import('resource://gre/modules/XPCOMUtils.jsm');
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource://gre/modules/devtools/dbg-client.jsm");
-let {devtools, gDevTools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {gDevTools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 
 let gClient;
 let gConnectionTimeout;

browser/devtools/framework/gDevTools.jsm

@@ -4,192 +4,15 @@
 
 "use strict";
 
-this.EXPORTED_SYMBOLS = [ "gDevTools", "DevTools", "gDevToolsBrowser", "devtools" ];
+this.EXPORTED_SYMBOLS = [ "gDevTools", "DevTools", "gDevToolsBrowser" ];
 
 const { classes: Cc, interfaces: Ci, utils: Cu } = Components;
 
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
 Cu.import("resource:///modules/devtools/shared/event-emitter.js");
-Cu.import("resource://gre/modules/FileUtils.jsm");
-Cu.import("resource://gre/modules/NetUtil.jsm");
 Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js");
-
-XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
-
-let loader = Cu.import("resource://gre/modules/commonjs/toolkit/loader.js", {}).Loader;
-
-// Used when the tools should be loaded from the Firefox package itself (the default)
-
-var BuiltinProvider = {
-  load: function(done) {
-    this.loader = new loader.Loader({
-      paths: {
-        "": "resource://gre/modules/commonjs/",
-        "main" : "resource:///modules/devtools/main",
-        "devtools": "resource:///modules/devtools",
-        "devtools/toolkit": "resource://gre/modules/devtools"
-      },
-      globals: {},
-    });
-    this.main = loader.main(this.loader, "main");
-
-    return Promise.resolve(undefined);
-  },
-
-  unload: function(reason) {
-    loader.unload(this.loader, reason);
-    delete this.loader;
-  },
-};
-
-var SrcdirProvider = {
-  load: function(done) {
-    let srcdir = Services.prefs.getComplexValue("devtools.loader.srcdir",
-                                                Ci.nsISupportsString);
-    srcdir = OS.Path.normalize(srcdir.data.trim());
-    let devtoolsDir = OS.Path.join(srcdir, "browser/devtools");
-    let toolkitDir = OS.Path.join(srcdir, "toolkit/devtools");
-
-    this.loader = new loader.Loader({
-      paths: {
-        "": "resource://gre/modules/commonjs/",
-        "devtools/toolkit": "file://" + toolkitDir,
-        "devtools": "file://" + devtoolsDir,
-        "main": "file://" + devtoolsDir + "/main.js"
-      },
-      globals: {}
-    });
-
-    this.main = loader.main(this.loader, "main");
-
-    return this._writeManifest(devtoolsDir).then((data) => {
-      this._writeManifest(toolkitDir);
-    }).then(null, Cu.reportError);
-  },
-
-  unload: function(reason) {
-    loader.unload(this.loader, reason);
-    delete this.loader;
-  },
-
-  _readFile: function(filename) {
-    let deferred = Promise.defer();
-    let file = new FileUtils.File(filename);
-    NetUtil.asyncFetch(file, (inputStream, status) => {
-      if (!Components.isSuccessCode(status)) {
-        deferred.reject(new Error("Couldn't load manifest: " + filename + "\n"));
-        return;
-      }
-      var data = NetUtil.readInputStreamToString(inputStream, inputStream.available());
-      deferred.resolve(data);
-    });
-    return deferred.promise;
-  },
-
-  _writeFile: function(filename, data) {
-    let deferred = Promise.defer();
-    let file = new FileUtils.File(filename);
-
-    var ostream = FileUtils.openSafeFileOutputStream(file)
-
-    var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
-                    createInstance(Ci.nsIScriptableUnicodeConverter);
-    converter.charset = "UTF-8";
-    var istream = converter.convertToInputStream(data);
-    NetUtil.asyncCopy(istream, ostream, (status) => {
-      if (!Components.isSuccessCode(status)) {
-        deferred.reject(new Error("Couldn't write manifest: " + filename + "\n"));
-        return;
-      }
-
-      deferred.resolve(null);
-    });
-    return deferred.promise;
-  },
-
-  _writeManifest: function(dir) {
-    return this._readFile(dir + "/jar.mn").then((data) => {
-      // The file data is contained within inputStream.
-      // You can read it into a string with
-      let entries = [];
-      let lines = data.split(/\n/);
-      let preprocessed = /^\s*\*/;
-      let contentEntry = new RegExp("^\\s+content/(\\w+)/(\\S+)\\s+\\((\\S+)\\)");
-      for (let line of lines) {
-        if (preprocessed.test(line)) {
-          dump("Unable to override preprocessed file: " + line + "\n");
-          continue;
-        }
-        let match = contentEntry.exec(line);
-        if (match) {
-          let entry = "override chrome://" + match[1] + "/content/" + match[2] + "\tfile://" + dir + "/" + match[3];
-          entries.push(entry);
-        }
-      }
-      return this._writeFile(dir + "/chrome.manifest", entries.join("\n"));
-    }).then(() => {
-      Components.manager.addBootstrappedManifestLocation(new FileUtils.File(dir));
-    });
-  }
-};
-
-this.devtools = {
-  _provider: null,
-
-  get main() this._provider.main,
-
-  // This is a gross gross hack.  In one place (computed-view.js) we use
-  // Iterator, but the addon-sdk loader takes Iterator off the global.
-  // Give computed-view.js a way to get back to the Iterator until we have
-  // a chance to fix that crap.
-  _Iterator: Iterator,
-
-  setProvider: function(provider) {
-    if (provider === this._provider) {
-      return;
-    }
-
-    if (this._provider) {
-      delete this.require;
-      this._provider.unload("newprovider");
-      gDevTools._teardown();
-    }
-    this._provider = provider;
-    this._provider.load();
-    this.require = loader.Require(this._provider.loader, { id: "devtools" })
-
-    let exports = this._provider.main;
-    // Let clients find exports on this object.
-    Object.getOwnPropertyNames(exports).forEach(key => {
-      XPCOMUtils.defineLazyGetter(this, key, () => exports[key]);
-    });
-  },
-
-  /**
-   * Choose a default tools provider based on the preferences.
-   */
-  _chooseProvider: function() {
-    if (Services.prefs.prefHasUserValue("devtools.loader.srcdir")) {
-      this.setProvider(SrcdirProvider);
-    } else {
-      this.setProvider(BuiltinProvider);
-    }
-  },
-
-  /**
-   * Reload the current provider.
-   */
-  reload: function() {
-    var events = devtools.require("sdk/system/events");
-    events.emit("startupcache-invalidate", {});
-
-    this._provider.unload("reload");
-    delete this._provider;
-    gDevTools._teardown();
-    this._chooseProvider();
-  },
-};
+Cu.import("resource://gre/modules/devtools/Loader.jsm");
 
 const FORBIDDEN_IDS = new Set(["toolbox", ""]);
 
@@ -868,5 +691,5 @@ gDevTools.on("toolbox-destroyed", gDevToolsBrowser._updateMenuCheckbox);
 
 Services.obs.addObserver(gDevToolsBrowser.destroy, "quit-application", false);
 
-// Now load the tools.
-devtools._chooseProvider();
+// Load the browser devtools main module as the loader's main module.
+devtools.main("devtools/main");

browser/devtools/framework/test/browser_toolbox_hosts.js

@@ -6,6 +6,9 @@ let temp = {}
 Cu.import("resource:///modules/devtools/gDevTools.jsm", temp);
 let DevTools = temp.DevTools;
 
+Cu.import("resource://gre/modules/devtools/Loader.jsm", temp);
+let devtools = temp.devtools;
+
 let Toolbox = devtools.Toolbox;
 
 let toolbox, target;

browser/devtools/framework/test/head.js

@@ -10,7 +10,7 @@ let console = tempScope.console;
 Components.utils.import("resource://gre/modules/commonjs/sdk/core/promise.js", tempScope);
 let Promise = tempScope.Promise;
 
-let {devtools} = Components.utils.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 /**

browser/devtools/inspector/CmdInspect.jsm

@@ -11,7 +11,7 @@ Cu.import('resource://gre/modules/XPCOMUtils.jsm');
 XPCOMUtils.defineLazyModuleGetter(this, "gDevTools",
                                   "resource:///modules/devtools/gDevTools.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-                                  "resource:///modules/devtools/gDevTools.jsm");
+                                  "resource://gre/modules/devtools/Loader.jsm");
 
 /**
  * 'inspect' command

browser/devtools/inspector/test/head.js

@@ -9,7 +9,7 @@ let tempScope = {};
 Cu.import("resource:///modules/devtools/LayoutHelpers.jsm", tempScope);
 let LayoutHelpers = tempScope.LayoutHelpers;
 
-let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", tempScope);
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", tempScope);
 let TargetFactory = devtools.TargetFactory;
 
 Components.utils.import("resource://gre/modules/devtools/Console.jsm", tempScope);

browser/devtools/inspector/test/helpers.js

@@ -24,7 +24,7 @@ let require = (Cu.import("resource://gre/modules/devtools/Require.jsm", {})).req
 Components.utils.import("resource:///modules/devtools/gcli.jsm", {});
 
 let console = (Cu.import("resource://gre/modules/devtools/Console.jsm", {})).console;
-let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 let Promise = (Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js", {})).Promise;

browser/devtools/layoutview/test/browser_layoutview.js

@@ -1,7 +1,7 @@
 /* Any copyright is dedicated to the Public Domain.
    http://creativecommons.org/publicdomain/zero/1.0/ */
 
-let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 function test() {

browser/devtools/markupview/test/head.js

@@ -4,7 +4,7 @@
 
 const Cu = Components.utils;
 
-let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 // Clear preferences that may be set during the course of tests.

browser/devtools/netmonitor/test/head.js

@@ -6,7 +6,8 @@ const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
 
 let { Services } = Cu.import("resource://gre/modules/Services.jsm", {});
 let { Promise } = Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js", {});
-let { gDevTools, devtools } = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let { gDevTools } = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let { devtools } = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 let Toolbox = devtools.Toolbox;
 

browser/devtools/profiler/test/head.js

@@ -7,6 +7,8 @@ const REMOTE_ENABLED = "devtools.debugger.remote-enabled";
 
 Cu.import("resource:///modules/devtools/gDevTools.jsm", temp);
 let gDevTools = temp.gDevTools;
+
+Cu.import("resource://gre/modules/devtools/Loader.jsm", temp);
 let TargetFactory = temp.devtools.TargetFactory;
 
 Cu.import("resource://gre/modules/devtools/dbg-server.jsm", temp);

browser/devtools/shared/DeveloperToolbar.jsm

@@ -31,7 +31,7 @@ XPCOMUtils.defineLazyModuleGetter(this, "PluralForm",
                                   "resource://gre/modules/PluralForm.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-                                  "resource:///modules/devtools/gDevTools.jsm");
+                                  "resource://gre/modules/devtools/Loader.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "require",
                                   "resource://gre/modules/devtools/Require.jsm");

browser/devtools/shared/test/head.js

@@ -2,7 +2,7 @@
  * 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/. */
 
-let {devtools} = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TargetFactory = devtools.TargetFactory;
 
 /**

browser/devtools/styleeditor/test/head.js

@@ -7,7 +7,7 @@ const TEST_BASE_HTTPS = "https://example.com/browser/browser/devtools/styleedito
 const TEST_HOST = 'mochi.test:8888';
 
 let tempScope = {};
-Cu.import("resource:///modules/devtools/gDevTools.jsm", tempScope);
+Cu.import("resource://gre/modules/devtools/Loader.jsm", tempScope);
 let TargetFactory = tempScope.devtools.TargetFactory;
 Components.utils.import("resource://gre/modules/devtools/Console.jsm", tempScope);
 let console = tempScope.console;

browser/devtools/styleeditor/test/helpers.js

@@ -24,7 +24,7 @@ let require = (Cu.import("resource://gre/modules/devtools/Require.jsm", {})).req
 Components.utils.import("resource:///modules/devtools/gcli.jsm", {});
 
 let console = (Cu.import("resource://gre/modules/devtools/Console.jsm", {})).console;
-let devtools = (Cu.import("resource:///modules/devtools/gDevTools.jsm", {})).devtools;
+let devtools = (Cu.import("resource://gre/modules/devtools/Loader.jsm", {})).devtools;
 let TargetFactory = devtools.TargetFactory;
 
 let Promise = (Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js", {})).Promise;

browser/devtools/styleinspector/computed-view.js

@@ -14,8 +14,6 @@ Cu.import("resource://gre/modules/PluralForm.jsm");
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource:///modules/devtools/Templater.jsm");
 
-Cu.import("resource:///modules/devtools/gDevTools.jsm");
-
 const FILTER_CHANGED_TIMEOUT = 300;
 
 const HTML_NS = "http://www.w3.org/1999/xhtml";
@@ -43,7 +41,7 @@ const XUL_NS = "http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul";
 function UpdateProcess(aWin, aGenerator, aOptions)
 {
   this.win = aWin;
-  this.iter = devtools._Iterator(aGenerator);
+  this.iter = _Iterator(aGenerator);
   this.onItem = aOptions.onItem || function() {};
   this.onBatch = aOptions.onBatch || function () {};
   this.onDone = aOptions.onDone || function() {};

browser/devtools/styleinspector/computedview.xhtml

@@ -35,7 +35,7 @@
 
     <script type="application/javascript;version=1.8">
       window.setPanel = function(panel, iframe) {
-        let {devtools} = Components.utils.import("resource:///modules/devtools/gDevTools.jsm", {});
+        let {devtools} = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
         let inspector = devtools.require("devtools/styleinspector/style-inspector");
         this.computedview = new inspector.ComputedViewTool(panel, window, iframe);
       }

browser/devtools/styleinspector/cssruleview.xhtml

@@ -24,7 +24,7 @@
 
     <script type="application/javascript;version=1.8">
       window.setPanel = function(panel, iframe) {
-        let {devtools} = Components.utils.import("resource:///modules/devtools/gDevTools.jsm", {});
+        let {devtools} = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
         let inspector = devtools.require("devtools/styleinspector/style-inspector");
         this.ruleview = new inspector.RuleViewTool(panel, window, iframe);
       }

browser/devtools/styleinspector/test/head.js

@@ -7,7 +7,10 @@ let tempScope = {};
 Cu.import("resource:///modules/devtools/gDevTools.jsm", tempScope);
 let ConsoleUtils = tempScope.ConsoleUtils;
 let gDevTools = tempScope.gDevTools;
+
+Cu.import("resource://gre/modules/devtools/Loader.jsm", tempScope);
 let devtools = tempScope.devtools;
+
 let TargetFactory = devtools.TargetFactory;
 let {CssHtmlTree} = devtools.require("devtools/styleinspector/computed-view");
 let {CssRuleView, _ElementStyle} = devtools.require("devtools/styleinspector/rule-view");

browser/devtools/tilt/CmdTilt.jsm

@@ -7,7 +7,7 @@ this.EXPORTED_SYMBOLS = [ ];
 
 Components.utils.import('resource://gre/modules/XPCOMUtils.jsm');
 Components.utils.import("resource:///modules/devtools/gcli.jsm");
-Components.utils.import("resource:///modules/devtools/gDevTools.jsm");
+Components.utils.import("resource://gre/modules/devtools/Loader.jsm");
 
 // Fetch TiltManager using the current loader, but don't save a
 // reference to it, because it might change with a tool reload.

browser/devtools/tilt/test/browser_tilt_picking_inspector.js

@@ -17,7 +17,7 @@ function test() {
   waitForExplicitFinish();
 
   createTab(function() {
-    let { devtools } = Cu.import("resource:///modules/devtools/gDevTools.jsm", {});
+    let { devtools } = Cu.import("resource://gre/modules/devtools/Loader.jsm", {});
     let target = devtools.TargetFactory.forTab(gBrowser.selectedTab);
 
     gDevTools.showToolbox(target, "inspector").then(function(toolbox) {

browser/devtools/tilt/test/head.js

@@ -2,7 +2,7 @@
    http://creativecommons.org/publicdomain/zero/1.0/ */
 "use strict";
 
-let {devtools} = Components.utils.import("resource:///modules/devtools/gDevTools.jsm", {});
+let {devtools} = Components.utils.import("resource://gre/modules/devtools/Loader.jsm", {});
 let TiltManager = devtools.require("devtools/tilt/tilt").TiltManager;
 let TiltGL = devtools.require("devtools/tilt/tilt-gl");
 let {EPSILON, TiltMath, vec3, mat3, mat4, quat4} = devtools.require("devtools/tilt/tilt-math");

browser/devtools/webconsole/HUDService.jsm

@@ -17,7 +17,7 @@ XPCOMUtils.defineLazyModuleGetter(this, "gDevTools",
     "resource:///modules/devtools/gDevTools.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-    "resource:///modules/devtools/gDevTools.jsm");
+    "resource://gre/modules/devtools/Loader.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "Services",
     "resource://gre/modules/Services.jsm");

browser/devtools/webconsole/test/head.js

@@ -10,6 +10,7 @@ Cu.import("resource://gre/modules/devtools/WebConsoleUtils.jsm", tempScope);
 let WebConsoleUtils = tempScope.WebConsoleUtils;
 Cu.import("resource:///modules/devtools/gDevTools.jsm", tempScope);
 let gDevTools = tempScope.gDevTools;
+Cu.import("resource://gre/module/devtools/Loader.jsm", tempScope);
 let TargetFactory = tempScope.devtools.TargetFactory;
 Components.utils.import("resource://gre/modules/devtools/Console.jsm", tempScope);
 let console = tempScope.console;

browser/devtools/webconsole/webconsole.js

@@ -41,7 +41,7 @@ XPCOMUtils.defineLazyModuleGetter(this, "EventEmitter",
                                   "resource:///modules/devtools/shared/event-emitter.js");
 
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-                                  "resource:///modules/devtools/gDevTools.jsm");
+                                  "resource://gre/modules/devtools/Loader.jsm");
 
 const STRINGS_URI = "chrome://browser/locale/devtools/webconsole.properties";
 let l10n = new WebConsoleUtils.l10n(STRINGS_URI);

toolkit/devtools/Loader.jsm

@@ -0,0 +1,238 @@
+/* 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";
+
+/**
+ * Manages the addon-sdk loader instance used to load the developer tools.
+ */
+
+let Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "NetUtil", "resource://gre/modules/NetUtil.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "FileUtils", "resource://gre/modules/NetUtil.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "console", "resource://gre/modules/devtools/Console.jsm");
+
+let loader = Cu.import("resource://gre/modules/commonjs/toolkit/loader.js", {}).Loader;
+let Promise = Cu.import("resource://gre/modules/commonjs/sdk/core/promise.js", {}).Promise;
+
+this.EXPORTED_SYMBOLS = ["devtools"];
+
+/**
+ * Providers are different strategies for loading the devtools.
+ */
+
+let loaderGlobals = {
+  console: console,
+  _Iterator: Iterator
+}
+
+// Used when the tools should be loaded from the Firefox package itself (the default)
+var BuiltinProvider = {
+  load: function(done) {
+    this.loader = new loader.Loader({
+      paths: {
+        "": "resource://gre/modules/commonjs/",
+        "main": "resource:///modules/devtools/main.js",
+        "devtools": "resource:///modules/devtools",
+        "devtools/server": "resource://gre/modules/devtools/server"
+      },
+      globals: loaderGlobals
+    });
+
+    return Promise.resolve(undefined);
+  },
+
+  unload: function(reason) {
+    loader.unload(this.loader, reason);
+    delete this.loader;
+  },
+};
+
+// Used when the tools should be loaded from a mozilla-central checkout.  In addition
+// to different paths, it needs to write chrome.manifest files to override chrome urls
+// from the builtin tools.
+var SrcdirProvider = {
+  load: function(done) {
+    let srcdir = Services.prefs.getComplexValue("devtools.loader.srcdir",
+                                                Ci.nsISupportsString);
+    srcdir = OS.Path.normalize(srcdir.data.trim());
+    let devtoolsDir = OS.Path.join(srcdir, "browser/devtools");
+    let toolkitDir = OS.Path.join(srcdir, "toolkit/devtools");
+    let serverDir = OS.path.join(toolkitDir, "server")
+
+    this.loader = new loader.Loader({
+      paths: {
+        "": "resource://gre/modules/commonjs/",
+        "devtools/server": "file://" + serverDir,
+        "devtools": "file://" + devtoolsDir,
+        "main": "file://" + devtoolsDir + "/main.js"
+      },
+      globals: loaderGlobals
+    });
+
+    return this._writeManifest(devtoolsDir).then((data) => {
+      this._writeManifest(toolkitDir);
+    }).then(null, Cu.reportError);
+  },
+
+  unload: function(reason) {
+    loader.unload(this.loader, reason);
+    delete this.loader;
+  },
+
+  _readFile: function(filename) {
+    let deferred = Promise.defer();
+    let file = new FileUtils.File(filename);
+    NetUtil.asyncFetch(file, (inputStream, status) => {
+      if (!Components.isSuccessCode(status)) {
+        deferred.reject(new Error("Couldn't load manifest: " + filename + "\n"));
+        return;
+      }
+      var data = NetUtil.readInputStreamToString(inputStream, inputStream.available());
+      deferred.resolve(data);
+    });
+    return deferred.promise;
+  },
+
+  _writeFile: function(filename, data) {
+    let deferred = Promise.defer();
+    let file = new FileUtils.File(filename);
+
+    var ostream = FileUtils.openSafeFileOutputStream(file)
+
+    var converter = Cc["@mozilla.org/intl/scriptableunicodeconverter"].
+                    createInstance(Ci.nsIScriptableUnicodeConverter);
+    converter.charset = "UTF-8";
+    var istream = converter.convertToInputStream(data);
+    NetUtil.asyncCopy(istream, ostream, (status) => {
+      if (!Components.isSuccessCode(status)) {
+        deferred.reject(new Error("Couldn't write manifest: " + filename + "\n"));
+        return;
+      }
+
+      deferred.resolve(null);
+    });
+    return deferred.promise;
+  },
+
+  _writeManifest: function(dir) {
+    return this._readFile(dir + "/jar.mn").then((data) => {
+      // The file data is contained within inputStream.
+      // You can read it into a string with
+      let entries = [];
+      let lines = data.split(/\n/);
+      let preprocessed = /^\s*\*/;
+      let contentEntry = new RegExp("^\\s+content/(\\w+)/(\\S+)\\s+\\((\\S+)\\)");
+      for (let line of lines) {
+        if (preprocessed.test(line)) {
+          dump("Unable to override preprocessed file: " + line + "\n");
+          continue;
+        }
+        let match = contentEntry.exec(line);
+        if (match) {
+          let entry = "override chrome://" + match[1] + "/content/" + match[2] + "\tfile://" + dir + "/" + match[3];
+          entries.push(entry);
+        }
+      }
+      return this._writeFile(dir + "/chrome.manifest", entries.join("\n"));
+    }).then(() => {
+      Components.manager.addBootstrappedManifestLocation(new FileUtils.File(dir));
+    });
+  }
+};
+
+/**
+ * The main devtools API.
+ * In addition to a few loader-related details, this object will also include all
+ * exports from the main module.
+ */
+this.devtools = {
+  _provider: null,
+
+  /**
+   * Add a URI to the loader.
+   * @param string id
+   *    The module id that can be used within the loader to refer to this module.
+   * @param string uri
+   *    The URI to load as a module.
+   * @returns The module's exports.
+   */
+  loadURI: function(id, uri) {
+    let module = loader.Module(id, uri);
+    return loader.load(this._provider.loader, module).exports;
+  },
+
+  /**
+   * Let the loader know the ID of the main module to load.
+   *
+   * The loader doesn't need a main module, but it's nice to have.  This
+   * will be called by the browser devtools to load the devtools/main module.
+   *
+   * When only using the server, there's no main module, and this method
+   * can be ignored.
+   */
+  main: function(id) {
+    this._mainid = id;
+    this._main = loader.main(this._provider.loader, id);
+
+    // Mirror the main module's exports on this object.
+    Object.getOwnPropertyNames(this._main).forEach(key => {
+      XPCOMUtils.defineLazyGetter(this, key, () => this._main[key]);
+    });
+  },
+
+  /**
+   * Override the provider used to load the tools.
+   */
+  setProvider: function(provider) {
+    if (provider === this._provider) {
+      return;
+    }
+
+    if (this._provider) {
+      delete this.require;
+      this._provider.unload("newprovider");
+      gDevTools._teardown();
+    }
+    this._provider = provider;
+    this._provider.load();
+    this.require = loader.Require(this._provider.loader, { id: "devtools" });
+
+    if (this._mainid) {
+      this.main(mainid);
+    }
+  },
+
+  /**
+   * Choose a default tools provider based on the preferences.
+   */
+  _chooseProvider: function() {
+    if (Services.prefs.prefHasUserValue("devtools.loader.srcdir")) {
+      this.setProvider(SrcdirProvider);
+    } else {
+      this.setProvider(BuiltinProvider);
+    }
+  },
+
+  /**
+   * Reload the current provider.
+   */
+  reload: function() {
+    var events = devtools.require("sdk/system/events");
+    events.emit("startupcache-invalidate", {});
+
+    this._provider.unload("reload");
+    delete this._provider;
+    gDevTools._teardown();
+    this._chooseProvider();
+  },
+};
+
+// Now load the tools.
+devtools._chooseProvider();

toolkit/devtools/webconsole/WebConsoleUtils.jsm

@@ -33,7 +33,7 @@ XPCOMUtils.defineLazyServiceGetter(this, "gActivityDistributor",
 XPCOMUtils.defineLazyModuleGetter(this, "gDevTools",
                                   "resource:///modules/devtools/gDevTools.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "devtools",
-                                  "resource:///modules/devtools/gDevTools.jsm");
+                                  "resource://gre/modules/devtools/Loader.jsm");
 
 XPCOMUtils.defineLazyModuleGetter(this, "VariablesView",
                                   "resource:///modules/devtools/VariablesView.jsm");