1 files changed, 47 insertions, 0 deletions
diff --git a/mobile/android/components/BrowserCLH.js b/mobile/android/components/BrowserCLH.js
new file mode 100644
index 000000000..4cbf03554
--- /dev/null
+++ b/mobile/android/components/BrowserCLH.js
@@ -0,0 +1,47 @@
+/* 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/. */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+Cu.import("resource://gre/modules/Services.jsm");
+
+function BrowserCLH() {}
+
+BrowserCLH.prototype = {
+  /**
+   * Register resource://android as the APK root.
+   *
+   * Consumers can access Android assets using resource://android/assets/FILENAME.
+   */
+  setResourceSubstitutions: function () {
+    let registry = Cc["@mozilla.org/chrome/chrome-registry;1"].getService(Ci["nsIChromeRegistry"]);
+    // Like jar:jar:file:///data/app/org.mozilla.fennec-2.apk!/assets/omni.ja!/chrome/chrome/content/aboutHome.xhtml
+    let url = registry.convertChromeURL(Services.io.newURI("chrome://browser/content/aboutHome.xhtml", null, null)).spec;
+    // Like jar:file:///data/app/org.mozilla.fennec-2.apk!/
+    url = url.substring(4, url.indexOf("!/") + 2);
+
+    let protocolHandler = Services.io.getProtocolHandler("resource").QueryInterface(Ci.nsIResProtocolHandler);
+    protocolHandler.setSubstitution("android", Services.io.newURI(url, null, null));
+  },
+
+  observe: function (subject, topic, data) {
+    switch (topic) {
+      case "app-startup":
+        this.setResourceSubstitutions();
+        break;
+    }
+  },
+
+  // QI
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),
+
+  // XPCOMUtils factory
+  classID: Components.ID("{be623d20-d305-11de-8a39-0800200c9a66}")
+};
+
+var components = [ BrowserCLH ];
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory(components);