1 files changed, 82 insertions, 0 deletions
diff --git a/mobile/android/chrome/content/EmbedRT.js b/mobile/android/chrome/content/EmbedRT.js
new file mode 100644
index 000000000..8e35a3b63
--- /dev/null
+++ b/mobile/android/chrome/content/EmbedRT.js
@@ -0,0 +1,82 @@
+/* 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";
+
+XPCOMUtils.defineLazyModuleGetter(this, "ConsoleAPI",
+                                  "resource://gre/modules/Console.jsm");
+
+/*
+ * Collection of methods and features specific to using a GeckoView instance.
+ * The code is isolated from browser.js for code size and performance reasons.
+ */
+var EmbedRT = {
+  _scopes: {},
+
+  observe: function(subject, topic, data) {
+    switch(topic) {
+      case "GeckoView:ImportScript":
+        this.importScript(data);
+        break;
+    }
+  },
+
+  /*
+   * Loads a script file into a sandbox and calls an optional load function
+   */
+  importScript: function(scriptURL) {
+    if (scriptURL in this._scopes) {
+      return;
+    }
+
+    let principal = Cc["@mozilla.org/systemprincipal;1"].createInstance(Ci.nsIPrincipal);
+
+    let sandbox = new Cu.Sandbox(principal,
+      {
+        sandboxName: scriptURL,
+        wantGlobalProperties: ["indexedDB"]
+      }
+    );
+
+    sandbox["console"] = new ConsoleAPI({ consoleID: "script/" + scriptURL });
+    sandbox["GeckoView"] = {
+      sendRequest: function(data) {
+        if (!data) {
+          throw new Error("Invalid parameter: 'data' can't be null.");
+        }
+
+        let message = { type: "GeckoView:Message", data: data };
+        Messaging.sendRequest(message);
+      },
+      sendRequestForResult: function(data) {
+        if (!data) {
+          throw new Error("Invalid parameter: 'data' can't be null.");
+        }
+
+        let message = { type: "GeckoView:Message", data: data };
+        return Messaging.sendRequestForResult(message);
+      }
+    };
+
+    // As we don't want our caller to control the JS version used for the
+    // script file, we run loadSubScript within the context of the
+    // sandbox with the latest JS version set explicitly.
+    sandbox.__SCRIPT_URI_SPEC__ = scriptURL;
+    Cu.evalInSandbox("Components.classes['@mozilla.org/moz/jssubscript-loader;1'].createInstance(Components.interfaces.mozIJSSubScriptLoader).loadSubScript(__SCRIPT_URI_SPEC__);", sandbox, "ECMAv5");
+
+    this._scopes[scriptURL] = sandbox;
+
+    if ("load" in sandbox) {
+      let params = {
+        window: window,
+        resourceURI: scriptURL,
+      };
+
+      try {
+        sandbox["load"](params);
+      } catch(e) {
+        dump("Exception calling 'load' method in script: " + scriptURL + "\n" + e);
+      }
+    }
+  }
+};