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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 "core/html/HTMLBRElement.h"
     25 
     26 #include "CSSPropertyNames.h"
     27 #include "CSSValueKeywords.h"
     28 #include "HTMLNames.h"
     29 #include "core/rendering/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     ScriptWrappable::init(this);
     40 }
     41 
     42 PassRefPtr<HTMLBRElement> HTMLBRElement::create(Document* document)
     43 {
     44     return adoptRef(new HTMLBRElement(brTag, document));
     45 }
     46 
     47 PassRefPtr<HTMLBRElement> HTMLBRElement::create(const QualifiedName& tagName, Document* document)
     48 {
     49     return adoptRef(new HTMLBRElement(tagName, document));
     50 }
     51 
     52 bool HTMLBRElement::isPresentationAttribute(const QualifiedName& name) const
     53 {
     54     if (name == clearAttr)
     55         return true;
     56     return HTMLElement::isPresentationAttribute(name);
     57 }
     58 
     59 void HTMLBRElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
     60 {
     61     if (name == clearAttr) {
     62         // If the string is empty, then don't add the clear property.
     63         // <br clear> and <br clear=""> are just treated like <br> by Gecko, Mac IE, etc. -dwh
     64         if (!value.isEmpty()) {
     65             if (equalIgnoringCase(value, "all"))
     66                 addPropertyToPresentationAttributeStyle(style, CSSPropertyClear, CSSValueBoth);
     67             else
     68                 addPropertyToPresentationAttributeStyle(style, CSSPropertyClear, value);
     69         }
     70     } else
     71         HTMLElement::collectStyleForPresentationAttribute(name, value, style);
     72 }
     73 
     74 RenderObject* HTMLBRElement::createRenderer(RenderStyle* style)
     75 {
     76     if (style->hasContent())
     77         return RenderObject::createObject(this, style);
     78 
     79     return new RenderBR(this);
     80 }
     81 
     82 }
     83