Bug 695014 - nsFormFillController shouldn't watch input elements withouth a list nor autocomplete. f=ehsan, r=bz,zpao,dolske

content/base/public/nsContentUtils.h

@@ -144,6 +144,7 @@ class nsAutoScriptBlockerSuppressNodeRemoved;
 struct nsIntMargin;
 class nsPIDOMWindow;
 class nsIDocumentLoaderFactory;
+class nsIDOMHTMLInputElement;
 
 namespace mozilla {
 
@@ -1847,7 +1848,18 @@ public:
 
   static nsresult Atob(const nsAString& aAsciiString,
                        nsAString& aBinaryData);
-  
+
+  /**
+   * Returns whether the input element passed in parameter has the autocomplete
+   * functionnality enabled. It is taking into account the form owner.
+   * NOTE: the caller has to make sure autocomplete makes sense for the
+   * element's type.
+   *
+   * @param aInput the input element to check. NOTE: aInput can't be null.
+   * @return whether the input element has autocomplete enabled.
+   */
+  static bool IsAutocompleteEnabled(nsIDOMHTMLInputElement* aInput);
+
 private:
   static bool InitializeEventTable();
 

content/base/src/nsContentUtils.cpp

@@ -178,6 +178,7 @@ static NS_DEFINE_CID(kXTFServiceCID, NS_XTFSERVICE_CID);
 #include "nsICategoryManager.h"
 #include "nsIViewManager.h"
 #include "nsEventStateManager.h"
+#include "nsIDOMHTMLInputElement.h"
 
 #ifdef IBMBIDI
 #include "nsIBidiKeyboard.h"
@@ -649,6 +650,27 @@ nsContentUtils::Atob(const nsAString& aAsciiBase64String,
   return rv;
 }
 
+bool
+nsContentUtils::IsAutocompleteEnabled(nsIDOMHTMLInputElement* aInput)
+{
+  NS_PRECONDITION(aInput, "aInput should not be null!");
+
+  nsAutoString autocomplete;
+  aInput->GetAutocomplete(autocomplete);
+
+  if (autocomplete.IsEmpty()) {
+    nsCOMPtr<nsIDOMHTMLFormElement> form;
+    aInput->GetForm(getter_AddRefs(form));
+    if (!form) {
+      return true;
+    }
+
+    form->GetAutocomplete(autocomplete);
+  }
+
+  return autocomplete.EqualsLiteral("on");
+}
+
 /**
  * Access a cached parser service. Don't addref. We need only one
  * reference to it and this class has that one.

toolkit/components/satchel/nsFormFillController.cpp

@@ -71,6 +71,7 @@
 #include "nsIDOMNSEditableElement.h"
 #include "nsIDOMNSEvent.h"
 #include "mozilla/dom/Element.h"
+#include "nsContentUtils.h"
 
 NS_IMPL_ISUPPORTS5(nsFormFillController,
                    nsIFormFillController,
@@ -573,7 +574,8 @@ nsFormFillController::StartSearch(const nsAString &aSearchString, const nsAStrin
                                          getter_AddRefs(result));
   } else {
     nsCOMPtr<nsIAutoCompleteResult> formHistoryResult;
-    if (!IsInputAutoCompleteOff()) {
+
+    if (mFocusedInput && nsContentUtils::IsAutocompleteEnabled(mFocusedInput)) {
       nsCOMPtr <nsIFormAutoComplete> formAutoComplete =
         do_GetService("@mozilla.org/satchel/form-autocomplete;1", &rv);
       NS_ENSURE_SUCCESS(rv, rv);
@@ -759,8 +761,11 @@ nsFormFillController::Focus(nsIDOMEvent* aEvent)
   bool isReadOnly = false;
   input->GetReadOnly(&isReadOnly);
 
-  nsAutoString autocomplete;
+  bool autocomplete = nsContentUtils::IsAutocompleteEnabled(input);
-  input->GetAttribute(NS_LITERAL_STRING("autocomplete"), autocomplete);
+
+  nsCOMPtr<nsIDOMHTMLElement> datalist;
+  input->GetList(getter_AddRefs(datalist));
+  bool hasList = datalist != nsnull;
 
   PRInt32 dummy;
   bool isPwmgrInput = false;
@@ -768,39 +773,15 @@ nsFormFillController::Focus(nsIDOMEvent* aEvent)
       isPwmgrInput = true;
 
   nsCOMPtr<nsIFormControl> formControl = do_QueryInterface(input);
-  if (formControl && formControl->IsSingleLineTextControl(true) &&
+  if (isPwmgrInput || (formControl &&
-      !isReadOnly || isPwmgrInput) {
+                       formControl->IsSingleLineTextControl(PR_TRUE) &&
+                       (hasList || autocomplete) && !isReadOnly)) {
     StartControllingInput(input);
   }
 
   return NS_OK;
 }
 
-bool
-nsFormFillController::IsInputAutoCompleteOff()
-{
-  bool autoCompleteOff = false;
-
-  if (mFocusedInput) {
-    nsAutoString autocomplete;
-    mFocusedInput->GetAttribute(NS_LITERAL_STRING("autocomplete"), autocomplete);
-
-    // Check the input for autocomplete="off", then the form
-    if (autocomplete.LowerCaseEqualsLiteral("off")) {
-      autoCompleteOff = true;
-    } else {
-
-      nsCOMPtr<nsIDOMHTMLFormElement> form;
-      mFocusedInput->GetForm(getter_AddRefs(form));
-      if (form)
-        form->GetAttribute(NS_LITERAL_STRING("autocomplete"), autocomplete);
-      autoCompleteOff = autocomplete.LowerCaseEqualsLiteral("off");
-    }
-  }
-
-  return autoCompleteOff;
-}
-
 nsresult
 nsFormFillController::KeyPress(nsIDOMEvent* aEvent)
 {

toolkit/components/satchel/nsFormFillController.h

@@ -104,7 +104,6 @@ protected:
                                                         PRInt32& aEntry,
                                                         void* aUserData);
   bool IsEventTrusted(nsIDOMEvent *aEvent);
-  bool IsInputAutoCompleteOff();
   // members //////////////////////////////////////////
 
   nsCOMPtr<nsIAutoCompleteController> mController;