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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "CSSVariablesDeclaration.h"
#include "CSSParser.h"
#include "CSSRule.h"
#include "CSSValueList.h"
#include "Document.h"
#include "ExceptionCode.h"
namespace WebCore {
CSSVariablesDeclaration::CSSVariablesDeclaration(StyleBase* parent, const Vector<String>& names, const Vector<RefPtr<CSSValue> >& values)
: StyleBase(parent)
{
m_variableNames = names;
ASSERT(names.size() == values.size());
unsigned s = names.size();
for (unsigned i = 0; i < s; ++i)
addParsedVariable(names[i], values[i], false);
}
CSSVariablesDeclaration::~CSSVariablesDeclaration()
{
}
String CSSVariablesDeclaration::getVariableValue(const String& variableName)
{
CSSValue* val = m_variablesMap.get(variableName).get();
if (val)
return val->cssText();
return "";
}
String CSSVariablesDeclaration::removeVariable(const String& variableName, ExceptionCode&)
{
// FIXME: The spec has this method taking an exception code but no exceptions are
// specified as being thrown.
RefPtr<CSSValue> val = m_variablesMap.take(variableName);
String result = val ? val->cssText() : "";
if (val) {
int s = m_variableNames.size();
for (int i = 0; i < s; ++i) {
if (m_variableNames[i] == variableName) {
m_variableNames.remove(i);
i--;
s--;
}
}
setNeedsStyleRecalc();
}
// FIXME: Communicate this change so that the document will update.
return result;
}
void CSSVariablesDeclaration::setVariable(const String& variableName, const String& variableValue, ExceptionCode& excCode)
{
// Try to parse the variable value into a Value*. If it fails we throw an exception.
CSSParser parser(useStrictParsing());
if (!parser.parseVariable(this, variableName, variableValue)) // If the parse succeeds, it will call addParsedVariable (our internal method for doing the add) with the parsed Value*.
excCode = SYNTAX_ERR;
else
setNeedsStyleRecalc();
}
void CSSVariablesDeclaration::addParsedVariable(const String& variableName, PassRefPtr<CSSValue> variableValue, bool updateNamesList)
{
// FIXME: Disabling declarations as variable values for now since they no longer have a common base class with CSSValues.
#if 0
variableValue->setParent(this); // Needed to connect variables that are CSSMutableStyleDeclarations, since the parent couldn't be set until now.
#endif
// Don't leak duplicates. For multiple variables with the same name, the last one
// declared will win.
CSSValue* current = m_variablesMap.take(variableName).get();
if (!current && updateNamesList)
m_variableNames.append(variableName);
m_variablesMap.set(variableName, variableValue);
// FIXME: Communicate this change so the document will update.
}
CSSValueList* CSSVariablesDeclaration::getParsedVariable(const String& variableName)
{
CSSValue* result = m_variablesMap.get(variableName).get();
if (result->isValueList())
return static_cast<CSSValueList*>(result);
return 0;
}
CSSMutableStyleDeclaration* CSSVariablesDeclaration::getParsedVariableDeclarationBlock(const String&)
{
// FIXME: Disabling declarations as variable values for now since they no longer have a common base class with CSSValues.
#if 0
StyleBase* result = m_variablesMap.get(variableName).get();
if (result->isMutableStyleDeclaration())
return static_cast<CSSMutableStyleDeclaration*>(result);
#endif
return 0;
}
unsigned CSSVariablesDeclaration::length() const
{
return m_variableNames.size();
}
String CSSVariablesDeclaration::item(unsigned index)
{
if (index >= m_variableNames.size())
return "";
return m_variableNames[index];
}
CSSRule* CSSVariablesDeclaration::parentRule()
{
return (parent() && parent()->isRule()) ? static_cast<CSSRule*>(parent()) : 0;
}
String CSSVariablesDeclaration::cssText() const
{
String result = "{ ";
unsigned s = m_variableNames.size();
for (unsigned i = 0; i < s; ++i) {
result += m_variableNames[i] + ": ";
result += m_variablesMap.get(m_variableNames[i])->cssText();
if (i < s - 1)
result += "; ";
}
result += " }";
return result;
}
void CSSVariablesDeclaration::setCssText(const String&)
{
// FIXME: It's not clear if this is actually settable.
}
void CSSVariablesDeclaration::setNeedsStyleRecalc()
{
// FIXME: Make this much better (it has the same problem CSSMutableStyleDeclaration does).
StyleBase* root = this;
while (StyleBase* parent = root->parent())
root = parent;
if (root->isCSSStyleSheet())
static_cast<CSSStyleSheet*>(root)->doc()->updateStyleSelector();
}
}
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