Bug 807222 part 5. Fix getOwnPropertyNames to work correctly on Window. r=jst

One note: it might be better to change the signature of Enumerate() to
indicate whether we're enumerating just the enumerable properties or
all of them, so we can skip doing this when someone does for...in on
the window.

browser/devtools/webconsole/test/browser_webconsole_completion.js

@@ -50,13 +50,14 @@ function testCompletion(hud) {
   is(input.selectionEnd, 8, "end selection is alright");
   is(jsterm.completeNode.value.replace(/ /g, ""), "", "'docu' completed");
 
-  // Test typing 'window.O' and press tab.
-  input.value = "window.O";
-  input.setSelectionRange(8, 8);
+  // Test typing 'window.Ob' and press tab.  Just 'window.O' is
+  // ambiguous: could be window.Object, window.Option, etc.
+  input.value = "window.Ob";
+  input.setSelectionRange(9, 9);
   jsterm.complete(jsterm.COMPLETE_FORWARD, testNext);
   yield;
 
-  is(input.value, "window.Object", "'window.O' tab completion");
+  is(input.value, "window.Object", "'window.Ob' tab completion");
 
   // Test typing 'document.getElem'.
   input.value = "document.getElem";

dom/base/nsDOMClassInfo.cpp

@@ -5612,12 +5612,48 @@ nsWindowSH::GetProperty(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
   return NS_OK;
 }
 
+struct ResolveGlobalNameClosure
+{
+  JSContext* cx;
+  JSObject* obj;
+  bool* retval;
+};
+
+static PLDHashOperator
+ResolveGlobalName(const nsAString& aName, void* aClosure)
+{
+  ResolveGlobalNameClosure* closure =
+    static_cast<ResolveGlobalNameClosure*>(aClosure);
+  JS::Value dummy;
+  bool ok = JS_LookupUCProperty(closure->cx, closure->obj,
+                                aName.BeginReading(), aName.Length(),
+                                &dummy);
+  if (!ok) {
+    *closure->retval = false;
+    return PL_DHASH_STOP;
+  }
+  return PL_DHASH_NEXT;
+}
+
 NS_IMETHODIMP
 nsWindowSH::Enumerate(nsIXPConnectWrappedNative *wrapper, JSContext *cx,
                       JSObject *obj, bool *_retval)
 {
   if (!ObjectIsNativeWrapper(cx, obj)) {
     *_retval = JS_EnumerateStandardClasses(cx, obj);
+    if (!*_retval) {
+      return NS_OK;
+    }
+
+    // Now resolve everything from the namespace manager
+    nsScriptNameSpaceManager *nameSpaceManager =
+      nsJSRuntime::GetNameSpaceManager();
+    if (!nameSpaceManager) {
+      NS_ERROR("Can't get namespace manager.");
+      return NS_ERROR_UNEXPECTED;
+    }
+    ResolveGlobalNameClosure closure = { cx, obj, _retval };
+    nameSpaceManager->EnumerateGlobalNames(ResolveGlobalName, &closure);
   }
 
   return NS_OK;

dom/base/nsScriptNameSpaceManager.cpp

@@ -802,6 +802,29 @@ nsScriptNameSpaceManager::RegisterDefineDOMInterface(const nsAFlatString& aName,
   }
 }
 
+struct GlobalNameClosure
+{
+  nsScriptNameSpaceManager::GlobalNameEnumerator enumerator;
+  void* closure;
+};
+
+static PLDHashOperator
+EnumerateGlobalName(PLDHashTable*, PLDHashEntryHdr *hdr, uint32_t,
+                    void* aClosure)
+{
+  GlobalNameMapEntry *entry = static_cast<GlobalNameMapEntry *>(hdr);
+  GlobalNameClosure* closure = static_cast<GlobalNameClosure*>(aClosure);
+  return closure->enumerator(entry->mKey, closure->closure);
+}
+
+void
+nsScriptNameSpaceManager::EnumerateGlobalNames(GlobalNameEnumerator aEnumerator,
+                                               void* aClosure)
+{
+  GlobalNameClosure closure = { aEnumerator, aClosure };
+  PL_DHashTableEnumerate(&mGlobalNames, EnumerateGlobalName, &closure);
+}
+
 static size_t
 SizeOfEntryExcludingThis(PLDHashEntryHdr *aHdr, nsMallocSizeOfFun aMallocSizeOf,
                          void *aArg)

dom/base/nsScriptNameSpaceManager.h

@@ -143,6 +143,12 @@ public:
     mozilla::dom::DefineInterface aDefineDOMInterface,
     mozilla::dom::PrefEnabled aPrefEnabled);
 
+  typedef PLDHashOperator
+  (* GlobalNameEnumerator)(const nsAString& aGlobalName, void* aClosure);
+
+  void EnumerateGlobalNames(GlobalNameEnumerator aEnumerator,
+                            void* aClosure);
+
   size_t SizeOfIncludingThis(nsMallocSizeOfFun aMallocSizeOf);
 
 private:

dom/base/test/Makefile.in

@@ -17,6 +17,7 @@ MOCHITEST_FILES = \
   test_gsp-qualified.html \
   test_nondomexception.html \
   test_screen_orientation.html \
+  test_window_enumeration.html \
   $(NULL)
 
 MOCHITEST_CHROME_FILES = \

dom/base/test/test_window_enumeration.html

@@ -0,0 +1,33 @@
+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=807222
+-->
+<head>
+  <meta charset="utf-8">
+  <title>Test for Bug 807222</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=807222">Mozilla Bug 807222</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 807222 **/
+var expectedProps = [ "Image", "Audio", "Option", "USSDReceivedEvent",
+                      "PerformanceTiming", "CSS2Properties", "SVGElement" ];
+var actualProps = Object.getOwnPropertyNames(window);
+
+for (var i = 0; i < expectedProps.length; ++i) {
+  isnot(actualProps.indexOf(expectedProps[i]), -1,
+        "getOwnPropertyNames should include " + expectedProps[i]);
+}
+</script>
+</pre>
+</body>
+</html>