// When getting properties on CSSStyleDeclarations, the name used from
// Javascript and the actual name of the property are not the same, so
// we have to do the following translation. The translation turns upper
// case characters into lower case characters and inserts dashes to
// separate words.
//
// Example: 'backgroundPositionY' -> 'background-position-y'
//
// Also, certain prefixes such as 'pos', 'css-' and 'pixel-' are stripped
// and the hadPixelOrPosPrefix out parameter is used to indicate whether or
// not the property name was prefixed with 'pos-' or 'pixel-'.
static CSSPropertyInfo* cssPropertyInfo(v8::Handle<v8::String>v8PropertyName)
{
String propertyName = toWebCoreString(v8PropertyName);
typedef HashMap<String, CSSPropertyInfo*> CSSPropertyInfoMap;
DEFINE_STATIC_LOCAL(CSSPropertyInfoMap, map, ());
CSSPropertyInfo* propInfo = map.get(propertyName);
if (!propInfo) {
unsigned length = propertyName.length();
bool hadPixelOrPosPrefix = false;
if (!length)
return 0;
Vector<UChar> name;
name.reserveCapacity(length);
unsigned i = 0;
if (hasCSSPropertyNamePrefix(propertyName, "css"))
i += 3;
else if (hasCSSPropertyNamePrefix(propertyName, "pixel")) {
i += 5;
hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "pos")) {
i += 3;
hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "webkit")
|| hasCSSPropertyNamePrefix(propertyName, "khtml")
|| hasCSSPropertyNamePrefix(propertyName, "apple"))
name.append('-');
else if (WTF::isASCIIUpper(propertyName[0]))
return 0;
name.append(WTF::toASCIILower(propertyName[i++]));
for (; i < length; ++i) {
UChar c = propertyName[i];
if (!WTF::isASCIIUpper(c))
name.append(c);
else {
name.append('-');
name.append(WTF::toASCIILower(c));
}
}
String propName = String::adopt(name);
int propertyID = cssPropertyID(propName);
if (propertyID) {
propInfo = new CSSPropertyInfo();
propInfo->hadPixelOrPosPrefix = hadPixelOrPosPrefix;
propInfo->wasFilter = (propName == "filter");
propInfo->propID = propertyID;
map.add(propertyName, propInfo);
}
}
return propInfo;
}
static String cssPropertyName(const Identifier& propertyName, bool* hadPixelOrPosPrefix = 0)
{
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = false;
unsigned length = propertyName.length();
if (!length)
return String();
StringBuilder builder;
builder.reserveCapacity(length);
unsigned i = 0;
if (hasCSSPropertyNamePrefix(propertyName, "css"))
i += 3;
else if (hasCSSPropertyNamePrefix(propertyName, "pixel")) {
i += 5;
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "pos")) {
i += 3;
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "webkit")
|| hasCSSPropertyNamePrefix(propertyName, "khtml")
|| hasCSSPropertyNamePrefix(propertyName, "apple")
|| hasCSSPropertyNamePrefix(propertyName, "epub"))
builder.append('-');
else {
if (isASCIIUpper(propertyName.characters()[0]))
return String();
}
builder.append(toASCIILower(propertyName.characters()[i++]));
for (; i < length; ++i) {
UChar c = propertyName.characters()[i];
if (!isASCIIUpper(c))
builder.append(c);
else
builder.append(makeString('-', toASCIILower(c)));
}
return builder.toString();
}
static String cssPropertyName(const Identifier& propertyName, bool* hadPixelOrPosPrefix = 0)
{
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = false;
unsigned length = propertyName.size();
if (!length)
return String();
Vector<UChar> name;
name.reserveInitialCapacity(length);
unsigned i = 0;
if (hasCSSPropertyNamePrefix(propertyName, "css"))
i += 3;
else if (hasCSSPropertyNamePrefix(propertyName, "pixel")) {
i += 5;
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "pos")) {
i += 3;
if (hadPixelOrPosPrefix)
*hadPixelOrPosPrefix = true;
} else if (hasCSSPropertyNamePrefix(propertyName, "webkit")
|| hasCSSPropertyNamePrefix(propertyName, "khtml")
|| hasCSSPropertyNamePrefix(propertyName, "apple"))
name.append('-');
else {
if (isASCIIUpper(propertyName.data()[0]))
return String();
}
name.append(toASCIILower(propertyName.data()[i++]));
for (; i < length; ++i) {
UChar c = propertyName.data()[i];
if (!isASCIIUpper(c))
name.append(c);
else {
name.append('-');
name.append(toASCIILower(c));
}
}
return String::adopt(name);
}
