commit d8143abbfa79a5eadaaede504b61459b4c2bf3ce
author tkent@chromium.org <tkent@chromium.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> Thu Jul 12 07:31:14 2012 +0000
committer tkent@chromium.org <tkent@chromium.org@268f45cc-cd09-0410-ab3c-d52691b4dbfc> Thu Jul 12 07:31:14 2012 +0000
tree 1a1a0a7f7e61196e9e293fcb7bdb72b5e63f8f4f
parent 7bf0ed56c5678181c7eed85843f994ad8595a5b5

Do not save the form state signature if nothing is saved
https://bugs.webkit.org/show_bug.cgi?id=91050

Reviewed by Hajime Morita.

Source/WebCore:

This change will reduce the size of HistoyItem.

Test: fast/forms/state-restore-empty-state.html

* html/FormController.cpp:
(WebCore::FormController::formElementsState):
If stateVector has only the signature string, clear it.

LayoutTests:

* fast/forms/resources/state-restore-empty-state-1.html: Added.
* fast/forms/state-restore-empty-state-expected.txt: Added.
* fast/forms/state-restore-empty-state.html: Added.


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@122422 268f45cc-cd09-0410-ab3c-d52691b4dbfc

Source/WebCore/html/FormController.cpp

diff --git a/Source/WebCore/html/FormController.cpp b/Source/WebCore/html/FormController.cpp
index b7c38e2..94107a6 100644
--- a/Source/WebCore/html/FormController.cpp
+++ b/Source/WebCore/html/FormController.cpp
@@ -172,6 +172,9 @@
         stateVector.append(keyGenerator->formKey(*elementWithState).string());
         elementWithState->saveFormControlState().serializeTo(stateVector);
     }
+    bool hasOnlySignature = stateVector.size() == 1;
+    if (hasOnlySignature)
+        stateVector.clear();
     return stateVector;
 }