1 /*

     2  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

     3  *

     4  * This library is free software; you can redistribute it and/or

     5  * modify it under the terms of the GNU Library General Public

     6  * License as published by the Free Software Foundation; either

     7  * version 2 of the License, or (at your option) any later version.

     8  *

     9  * This library is distributed in the hope that it will be useful,

    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of

    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

    12  * Library General Public License for more details.

    13  *

    14  * You should have received a copy of the GNU Library General Public License

    15  * along with this library; see the file COPYING.LIB.  If not, write to

    16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

    17  * Boston, MA 02110-1301, USA.

    18  *

    19  */

    20 

    21 #include "config.h"

    22 #if ENABLE(PROGRESS_TAG)

    23 #include "HTMLProgressElement.h"

    24 

    25 #include "Attribute.h"

    26 #include "EventNames.h"

    27 #include "ExceptionCode.h"

    28 #include "FormDataList.h"

    29 #include "HTMLFormElement.h"

    30 #include "HTMLNames.h"

    31 #include "LegacyHTMLTreeBuilder.h"

    32 #include "RenderProgress.h"

    33 #include <wtf/StdLibExtras.h>

    34 

    35 namespace WebCore {

    36 

    37 using namespace HTMLNames;

    38 

    39 HTMLProgressElement::HTMLProgressElement(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

    40     : HTMLFormControlElement(tagName, document, form)

    41 {

    42     ASSERT(hasTagName(progressTag));

    43 }

    44 

    45 PassRefPtr<HTMLProgressElement> HTMLProgressElement::create(const QualifiedName& tagName, Document* document, HTMLFormElement* form)

    46 {

    47     return adoptRef(new HTMLProgressElement(tagName, document, form));

    48 }

    49 

    50 RenderObject* HTMLProgressElement::createRenderer(RenderArena* arena, RenderStyle*)

    51 {

    52     return new (arena) RenderProgress(this);

    53 }

    54 

    55 const AtomicString& HTMLProgressElement::formControlType() const

    56 {

    57     DEFINE_STATIC_LOCAL(const AtomicString, progress, ("progress"));

    58     return progress;

    59 }

    60 

    61 void HTMLProgressElement::parseMappedAttribute(Attribute* attribute)

    62 {

    63     if (attribute->name() == valueAttr) {

    64         if (renderer())

    65             renderer()->updateFromElement();

    66     } else if (attribute->name() == maxAttr) {

    67         if (renderer())

    68             renderer()->updateFromElement();

    69     } else

    70         HTMLFormControlElement::parseMappedAttribute(attribute);

    71 }

    72 

    73 double HTMLProgressElement::value() const

    74 {

    75     const AtomicString& valueString = getAttribute(valueAttr);

    76     double value;

    77     bool ok = parseToDoubleForNumberType(valueString, &value);

    78     if (!ok || value < 0)

    79         return valueString.isNull() ? 1 : 0;

    80     return (value > max()) ? max() : value;

    81 }

    82 

    83 void HTMLProgressElement::setValue(double value, ExceptionCode& ec)

    84 {

    85     if (!isfinite(value)) {

    86         ec = NOT_SUPPORTED_ERR;

    87         return;

    88     }

    89     setAttribute(valueAttr, String::number(value >= 0 ? value : 0));

    90 }

    91 

    92 double HTMLProgressElement::max() const

    93 {

    94     double max;

    95     bool ok = parseToDoubleForNumberType(getAttribute(maxAttr), &max);

    96     if (!ok || max <= 0)

    97         return 1;

    98     return max;

    99 }

   100 

   101 void HTMLProgressElement::setMax(double max, ExceptionCode& ec)

   102 {

   103     if (!isfinite(max)) {

   104         ec = NOT_SUPPORTED_ERR;

   105         return;

   106     }

   107     setAttribute(maxAttr, String::number(max > 0 ? max : 1));

   108 }

   109 

   110 double HTMLProgressElement::position() const

   111 {

   112     if (!hasAttribute(valueAttr))

   113         return -1;

   114     return value() / max();

   115 }

   116 

   117 } // namespace

   118 #endif