1 files changed, 164 insertions, 0 deletions
diff --git a/chrome/content/util.js b/chrome/content/util.js
new file mode 100644
index 0000000..1fab8d3
--- /dev/null
+++ b/chrome/content/util.js
@@ -0,0 +1,164 @@
+/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+/**
+ * Some common, generic functions
+ */
+
+try {
+  var Cc = Components.classes;
+  var Ci = Components.interfaces;
+} catch (e) { ddump(e); } // if already declared, as in xpcshell-tests
+try {
+  var Cu = Components.utils;
+} catch (e) { ddump(e); }
+
+Cu.import("resource:///modules/errUtils.js");
+
+/**
+ * Create a subtype
+ */
+function extend(child, supertype)
+{
+  child.prototype.__proto__ = supertype.prototype;
+}
+
+function assert(test, errorMsg)
+{
+  if (!test)
+    throw new NotReached(errorMsg ? errorMsg :
+          "Programming bug. Assertion failed, see log.");
+}
+
+function makeCallback(obj, func)
+{
+  return function()
+  {
+    return func.apply(obj, arguments);
+  }
+}
+
+/**
+ * @param bundleURI {String}   chrome URL to properties file
+ * @return nsIStringBundle
+ */
+function getStringBundle(bundleURI)
+{
+  try {
+    return Cc["@mozilla.org/intl/stringbundle;1"]
+           .getService(Ci.nsIStringBundleService)
+           .createBundle(bundleURI);
+  } catch (e) {
+    throw new Exception("Failed to get stringbundle URI <" + bundleURI +
+                        ">. Error: " + e);
+  }
+}
+
+function Exception(msg)
+{
+  this._message = msg;
+
+  // get stack
+  try {
+    not.found.here += 1; // force a native exception ...
+  } catch (e) {
+    this.stack = e.stack; // ... to get the current stack
+  }
+}
+Exception.prototype =
+{
+  get message()
+  {
+    return this._message;
+  },
+  toString : function()
+  {
+    return this._message;
+  }
+}
+
+function NotReached(msg)
+{
+  Exception.call(this, msg);
+  logException(this);
+}
+extend(NotReached, Exception);
+
+
+function deepCopy(org)
+{
+  if (typeof(org) == "undefined")
+    return undefined;
+  if (org == null)
+    return null;
+  if (typeof(org) == "string")
+    return org;
+  if (typeof(org) == "number")
+    return org;
+  if (typeof(org) == "boolean")
+    return org == true;
+  if (typeof(org) == "function")
+    return org;
+  if (typeof(org) != "object")
+    throw "can't copy objects of type " + typeof(org) + " yet";
+
+  //TODO still instanceof org != instanceof copy
+  //var result = new org.constructor();
+  var result = new Object();
+  if (typeof(org.length) != "undefined")
+    var result = new Array();
+  for (var prop in org)
+    result[prop] = deepCopy(org[prop]);
+  return result;
+}
+
+let kDebug = false;
+function ddump(text)
+{
+  if (kDebug)
+    dump(text + "\n");
+}
+
+function debugObject(obj, name, maxDepth, curDepth)
+{
+  if (curDepth == undefined)
+    curDepth = 0;
+  if (maxDepth != undefined && curDepth > maxDepth)
+    return "";
+
+  var result = "";
+  var i = 0;
+  for (let prop in obj)
+  {
+    i++;
+    try {
+      if (typeof(obj[prop]) == "object")
+      {
+        if (obj[prop] && obj[prop].length != undefined)
+          result += name + "." + prop + "=[probably array, length " +
+                obj[prop].length + "]\n";
+        else
+          result += name + "." + prop + "=[" + typeof(obj[prop]) + "]\n";
+        result += debugObject(obj[prop], name + "." + prop,
+                              maxDepth, curDepth + 1);
+      }
+      else if (typeof(obj[prop]) == "function")
+        result += name + "." + prop + "=[function]\n";
+      else
+        result += name + "." + prop + "=" + obj[prop] + "\n";
+    } catch (e) {
+      result += name + "." + prop + "-> Exception(" + e + ")\n";
+    }
+  }
+  if (!i)
+    result += name + " is empty\n";
+  return result;
+}
+
+function alertPrompt(alertTitle, alertMsg)
+{
+  Cc["@mozilla.org/embedcomp/prompt-service;1"]
+      .getService(Ci.nsIPromptService)
+      .alert(window, alertTitle, alertMsg);
+}