third_party/WebKit/Source/core/html/HTMLFormControlsCollection.h

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
   5  * Copyright (C) 2014 Samsung Electronics. All rights reserved.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public License
  18  * along with this library; see the file COPYING.LIB.  If not, write to
  19  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20  * Boston, MA 02110-1301, USA.
  21  *
  22  */
  23
  24 #ifndef HTMLFormControlsCollection_h
  25 #define HTMLFormControlsCollection_h
  26
  27 #include "core/html/FormAssociatedElement.h"
  28 #include "core/html/HTMLCollection.h"
  29 #include "core/html/HTMLElement.h"
  30 #include "core/html/RadioNodeList.h"
  31
  32 namespace blink {
  33
  34 class HTMLImageElement;
  35 class RadioNodeListOrElement;
  36
  37 // This class is just a big hack to find form elements even in malformed HTML elements.
  38 // The famous <table><tr><form><td> problem.
  39
  40 class HTMLFormControlsCollection final : public HTMLCollection {
  41     DEFINE_WRAPPERTYPEINFO();
  42 public:
  43     static PassRefPtrWillBeRawPtr<HTMLFormControlsCollection> create(ContainerNode&, CollectionType);
  44
  45     ~HTMLFormControlsCollection() override;
  46
  47     HTMLElement* item(unsigned offset) const { return toHTMLElement(HTMLCollection::item(offset)); }
  48
  49     HTMLElement* namedItem(const AtomicString& name) const override;
  50     void namedGetter(const AtomicString& name, RadioNodeListOrElement&);
  51
  52     DECLARE_VIRTUAL_TRACE();
  53
  54 private:
  55     explicit HTMLFormControlsCollection(ContainerNode&);
  56
  57     void updateIdNameCache() const override;
  58     void supportedPropertyNames(Vector<String>& names) override;
  59
  60     const FormAssociatedElement::List& formControlElements() const;
  61     const WillBeHeapVector<RawPtrWillBeMember<HTMLImageElement>>& formImageElements() const;
  62     HTMLElement* virtualItemAfter(Element*) const override;
  63     void invalidateCache(Document* oldDocument = 0) const override;
  64
  65     mutable RawPtrWillBeMember<HTMLElement> m_cachedElement;
  66     mutable unsigned m_cachedElementOffsetInArray;
  67 };
  68 DEFINE_TYPE_CASTS(HTMLFormControlsCollection, LiveNodeListBase, collection, collection->type() == FormControls, collection.type() == FormControls);
  69
  70 } // namespace blink
  71
  72 #endif // HTMLFormControlsCollection_h