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      1 /*
      2  * Copyright (C) 1999 Lars Knoll (knoll (at) kde.org)
      3  *           (C) 1999 Antti Koivisto (koivisto (at) kde.org)
      4  *           (C) 2001 Dirk Mueller (mueller (at) kde.org)
      5  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
      6  *           (C) 2006 Alexey Proskuryakov (ap (at) nypop.com)
      7  *
      8  * This library is free software; you can redistribute it and/or
      9  * modify it under the terms of the GNU Library General Public
     10  * License as published by the Free Software Foundation; either
     11  * version 2 of the License, or (at your option) any later version.
     12  *
     13  * This library is distributed in the hope that it will be useful,
     14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     16  * Library General Public License for more details.
     17  *
     18  * You should have received a copy of the GNU Library General Public License
     19  * along with this library; see the file COPYING.LIB.  If not, write to
     20  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     21  * Boston, MA 02110-1301, USA.
     22  *
     23  */
     24 
     25 #include "config.h"
     26 #include "core/html/HTMLLegendElement.h"
     27 
     28 #include "core/HTMLNames.h"
     29 #include "core/dom/ElementTraversal.h"
     30 #include "core/html/HTMLFieldSetElement.h"
     31 #include "core/html/HTMLFormControlElement.h"
     32 
     33 namespace WebCore {
     34 
     35 using namespace HTMLNames;
     36 
     37 
     38 inline HTMLLegendElement::HTMLLegendElement(Document& document)
     39     : HTMLElement(legendTag, document)
     40 {
     41     ScriptWrappable::init(this);
     42 }
     43 
     44 DEFINE_NODE_FACTORY(HTMLLegendElement)
     45 
     46 HTMLFormControlElement* HTMLLegendElement::associatedControl()
     47 {
     48     // Check if there's a fieldset belonging to this legend.
     49     Element* fieldset = parentElement();
     50     while (fieldset && !isHTMLFieldSetElement(*fieldset))
     51         fieldset = fieldset->parentElement();
     52     if (!fieldset)
     53         return 0;
     54 
     55     // Find first form element inside the fieldset that is not a legend element.
     56     // FIXME: Should we consider tabindex?
     57     return Traversal<HTMLFormControlElement>::next(*fieldset, fieldset);
     58 }
     59 
     60 void HTMLLegendElement::focus(bool, FocusType type)
     61 {
     62     if (isFocusable())
     63         Element::focus(true, type);
     64 
     65     // To match other browsers' behavior, never restore previous selection.
     66     if (HTMLFormControlElement* control = associatedControl())
     67         control->focus(false, type);
     68 }
     69 
     70 void HTMLLegendElement::accessKeyAction(bool sendMouseEvents)
     71 {
     72     if (HTMLFormControlElement* control = associatedControl())
     73         control->accessKeyAction(sendMouseEvents);
     74 }
     75 
     76 HTMLFormElement* HTMLLegendElement::form() const
     77 {
     78     // According to the specification, If the legend has a fieldset element as
     79     // its parent, then the form attribute must return the same value as the
     80     // form attribute on that fieldset element. Otherwise, it must return null.
     81     ContainerNode* fieldset = parentNode();
     82     if (!isHTMLFieldSetElement(fieldset))
     83         return 0;
     84 
     85     return toHTMLFieldSetElement(fieldset)->formOwner();
     86 }
     87 
     88 } // namespace
     89