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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) 2000 Simon Hausmann <hausmann (at) kde.org>
      5  * Copyright (C) 2003, 2006, 2009, 2010 Apple Inc. 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 #include "config.h"
     24 #include "HTMLBRElement.h"
     25 
     26 #include "Attribute.h"
     27 #include "CSSPropertyNames.h"
     28 #include "HTMLNames.h"
     29 #include "RenderBR.h"
     30 
     31 namespace WebCore {
     32 
     33 using namespace HTMLNames;
     34 
     35 HTMLBRElement::HTMLBRElement(const QualifiedName& tagName, Document* document)
     36     : HTMLElement(tagName, document)
     37 {
     38     ASSERT(hasTagName(brTag));
     39 }
     40 
     41 PassRefPtr<HTMLBRElement> HTMLBRElement::create(Document* document)
     42 {
     43     return adoptRef(new HTMLBRElement(brTag, document));
     44 }
     45 
     46 PassRefPtr<HTMLBRElement> HTMLBRElement::create(const QualifiedName& tagName, Document* document)
     47 {
     48     return adoptRef(new HTMLBRElement(tagName, document));
     49 }
     50 
     51 bool HTMLBRElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
     52 {
     53     if (attrName == clearAttr) {
     54         result = eUniversal;
     55         return false;
     56     }
     57 
     58     return HTMLElement::mapToEntry(attrName, result);
     59 }
     60 
     61 void HTMLBRElement::parseMappedAttribute(Attribute* attr)
     62 {
     63     if (attr->name() == clearAttr) {
     64         // If the string is empty, then don't add the clear property.
     65         // <br clear> and <br clear=""> are just treated like <br> by Gecko, Mac IE, etc. -dwh
     66         const AtomicString& str = attr->value();
     67         if (!str.isEmpty()) {
     68             if (equalIgnoringCase(str, "all"))
     69                 addCSSProperty(attr, CSSPropertyClear, "both");
     70             else
     71                 addCSSProperty(attr, CSSPropertyClear, str);
     72         }
     73     } else
     74         HTMLElement::parseMappedAttribute(attr);
     75 }
     76 
     77 RenderObject* HTMLBRElement::createRenderer(RenderArena* arena, RenderStyle* style)
     78 {
     79      if (style->contentData())
     80         return RenderObject::createObject(this, style);
     81 
     82      return new (arena) RenderBR(this);
     83 }
     84 
     85 }
     86