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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Simon Hausmann <hausmann@kde.org>
* Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "HTMLFontElement.h"
#include "CSSPropertyNames.h"
#include "CSSValueKeywords.h"
#include "HTMLNames.h"
#include "MappedAttribute.h"
using namespace WTF;
namespace WebCore {
using namespace HTMLNames;
HTMLFontElement::HTMLFontElement(const QualifiedName& tagName, Document* document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(fontTag));
}
// Allows leading spaces.
// Allows trailing nonnumeric characters.
// Returns 10 for any size greater than 9.
static bool parseFontSizeNumber(const String& s, int& size)
{
unsigned pos = 0;
// Skip leading spaces.
while (isSpaceOrNewline(s[pos]))
++pos;
// Skip a plus or minus.
bool sawPlus = false;
bool sawMinus = false;
if (s[pos] == '+') {
++pos;
sawPlus = true;
} else if (s[pos] == '-') {
++pos;
sawMinus = true;
}
// Parse a single digit.
if (!isASCIIDigit(s[pos]))
return false;
int num = s[pos++] - '0';
// Check for an additional digit.
if (isASCIIDigit(s[pos]))
num = 10;
if (sawPlus) {
size = num + 3;
return true;
}
// Don't return 0 (which means 3) or a negative number (which means the same as 1).
if (sawMinus) {
size = num == 1 ? 2 : 1;
return true;
}
size = num;
return true;
}
bool HTMLFontElement::mapToEntry(const QualifiedName& attrName, MappedAttributeEntry& result) const
{
if (attrName == sizeAttr ||
attrName == colorAttr ||
attrName == faceAttr) {
result = eUniversal;
return false;
}
return HTMLElement::mapToEntry(attrName, result);
}
bool HTMLFontElement::cssValueFromFontSizeNumber(const String& s, int& size)
{
int num;
if (!parseFontSizeNumber(s, num))
return false;
switch (num) {
case 2:
size = CSSValueSmall;
break;
case 0: // treat 0 the same as 3, because people expect it to be between -1 and +1
case 3:
size = CSSValueMedium;
break;
case 4:
size = CSSValueLarge;
break;
case 5:
size = CSSValueXLarge;
break;
case 6:
size = CSSValueXxLarge;
break;
default:
if (num > 6)
size = CSSValueWebkitXxxLarge;
else
size = CSSValueXSmall;
}
return true;
}
void HTMLFontElement::parseMappedAttribute(MappedAttribute *attr)
{
if (attr->name() == sizeAttr) {
int size;
if (cssValueFromFontSizeNumber(attr->value(), size))
addCSSProperty(attr, CSSPropertyFontSize, size);
} else if (attr->name() == colorAttr) {
addCSSColor(attr, CSSPropertyColor, attr->value());
} else if (attr->name() == faceAttr) {
addCSSProperty(attr, CSSPropertyFontFamily, attr->value());
} else
HTMLElement::parseMappedAttribute(attr);
}
String HTMLFontElement::color() const
{
return getAttribute(colorAttr);
}
void HTMLFontElement::setColor(const String& value)
{
setAttribute(colorAttr, value);
}
String HTMLFontElement::face() const
{
return getAttribute(faceAttr);
}
void HTMLFontElement::setFace(const String& value)
{
setAttribute(faceAttr, value);
}
String HTMLFontElement::size() const
{
return getAttribute(sizeAttr);
}
void HTMLFontElement::setSize(const String& value)
{
setAttribute(sizeAttr, value);
}
}
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