Move filtering logic in GetDataListSuggestions() to Blink.

third_party/WebKit/Source/core/html/HTMLInputElement.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2010 Google Inc. All rights reserved.
  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
@@ skipping 1565 matching lines @@
     if (!dataList)
         return false;
     HTMLDataListOptionsCollection* options = dataList->options();
     for (unsigned i = 0; HTMLOptionElement* option = options->item(i); ++i) {
         if (isValidValue(option->value()))
             return true;
     }
     return false;
 }
 
+HeapVector<Member<HTMLOptionElement>> HTMLInputElement::filteredDataListOptions() const
+{
+    HeapVector<Member<HTMLOptionElement>> filtered;
+    HTMLDataListElement* dataList = this->dataList();
+    if (!dataList)
+        return filtered;
+
+    String prefix = innerEditorValue();
+    if (multiple() && type() == InputTypeNames::email) {
+        Vector<String> emails;
+        prefix.split(',', true, emails);
+        if (!emails.isEmpty())
+            prefix = emails.last().stripWhiteSpace();
+    }
+
+    HTMLDataListOptionsCollection* options = dataList->options();
+    filtered.reserveCapacity(options->length());
+    prefix = prefix.lower();
+    for (unsigned i = 0; i < options->length(); ++i) {
+        HTMLOptionElement* option = options->item(i);
+        DCHECK(option);
+        if (!option->value().lower().startsWith(prefix) || !isValidValue(option->value()))
+            continue;
+        filtered.append(option);
+    }
+    return filtered;
+}
+
 void HTMLInputElement::setListAttributeTargetObserver(ListAttributeTargetObserver* newObserver)
 {
     if (m_listAttributeTargetObserver)
         m_listAttributeTargetObserver->unregister();
     m_listAttributeTargetObserver = newObserver;
 }
 
 void HTMLInputElement::resetListAttributeTargetObserver()
 {
     if (isConnected())
@@ skipping 318 matching lines @@
 {
     return m_inputTypeView->hasFallbackContent();
 }
 
 void HTMLInputElement::setFilesFromPaths(const Vector<String>& paths)
 {
     return m_inputType->setFilesFromPaths(paths);
 }
 
 } // namespace blink