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

   1 /*
   2  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
   3  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
   4  *           (C) 2000 Simon Hausmann <hausmann@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 "core/CSSPropertyNames.h"
  27 #include "core/CSSValueKeywords.h"
  28 #include "core/HTMLNames.h"
  29 #include "core/layout/LayoutBR.h"
  30
  31 namespace blink {
  32
  33 using namespace HTMLNames;
  34
  35 inline HTMLBRElement::HTMLBRElement(Document& document)
  36     : HTMLElement(brTag, document)
  37 {
  38 }
  39
  40 DEFINE_NODE_FACTORY(HTMLBRElement)
  41
  42 bool HTMLBRElement::isPresentationAttribute(const QualifiedName& name) const
  43 {
  44     if (name == clearAttr)
  45         return true;
  46     return HTMLElement::isPresentationAttribute(name);
  47 }
  48
  49 void HTMLBRElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
  50 {
  51     if (name == clearAttr) {
  52         // If the string is empty, then don't add the clear property.
  53         // <br clear> and <br clear=""> are just treated like <br> by Gecko, Mac IE, etc. -dwh
  54         if (!value.isEmpty()) {
  55             if (equalIgnoringCase(value, "all"))
  56                 addPropertyToPresentationAttributeStyle(style, CSSPropertyClear, CSSValueBoth);
  57             else
  58                 addPropertyToPresentationAttributeStyle(style, CSSPropertyClear, value);
  59         }
  60     } else {
  61         HTMLElement::collectStyleForPresentationAttribute(name, value, style);
  62     }
  63 }
  64
  65 LayoutObject* HTMLBRElement::createLayoutObject(const ComputedStyle& style)
  66 {
  67     if (style.hasContent())
  68         return LayoutObject::createObject(this, style);
  69     return new LayoutBR(this);
  70 }
  71
  72 }