/*

 * (C) 1999-2003 Lars Knoll (knoll@kde.org)

 * Copyright (C) 2004, 2005, 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.

 */

#ifndef CSSMutableStyleDeclaration_h

#define CSSMutableStyleDeclaration_h

#include "CSSStyleDeclaration.h"

#include "CSSPrimitiveValue.h"

#include "CSSProperty.h"

#include "KURLHash.h"

#include "PlatformString.h"

#include <wtf/ListHashSet.h>

#include <wtf/Vector.h>

namespace WebCore {

class Node;

class CSSMutableStyleDeclarationConstIterator {

public:

    CSSMutableStyleDeclarationConstIterator(const CSSMutableStyleDeclaration* decl, CSSProperty* current);

    CSSMutableStyleDeclarationConstIterator(const CSSMutableStyleDeclarationConstIterator& o);

    ~CSSMutableStyleDeclarationConstIterator();

    const CSSProperty& operator*() const { return *m_current; }

    const CSSProperty* operator->() const { return m_current; }

    bool operator!=(const CSSMutableStyleDeclarationConstIterator& o) { ASSERT(m_decl == o.m_decl); return m_current != o.m_current; }

    bool operator==(const CSSMutableStyleDeclarationConstIterator& o) { ASSERT(m_decl == o.m_decl); return m_current == o.m_current; }

    CSSMutableStyleDeclarationConstIterator& operator=(const CSSMutableStyleDeclarationConstIterator& o);

    CSSMutableStyleDeclarationConstIterator& operator++();

    CSSMutableStyleDeclarationConstIterator& operator--();

private:

    const CSSMutableStyleDeclaration* m_decl;

    CSSProperty* m_current;

};

class CSSMutableStyleDeclaration : public CSSStyleDeclaration {

public:

    static PassRefPtr<CSSMutableStyleDeclaration> create()

    {

        return adoptRef(new CSSMutableStyleDeclaration);

    }

    static PassRefPtr<CSSMutableStyleDeclaration> create(CSSRule* parentRule)

    {

        return adoptRef(new CSSMutableStyleDeclaration(parentRule));

    }

    static PassRefPtr<CSSMutableStyleDeclaration> create(CSSRule* parentRule, const CSSProperty* const* properties, int numProperties)

    {

        return adoptRef(new CSSMutableStyleDeclaration(parentRule, properties, numProperties));

    }

    static PassRefPtr<CSSMutableStyleDeclaration> create(const Vector<CSSProperty>& properties, unsigned variableDependentValueCount)

    {

        return adoptRef(new CSSMutableStyleDeclaration(0, properties, variableDependentValueCount));

    }

    CSSMutableStyleDeclaration& operator=(const CSSMutableStyleDeclaration&);

    typedef CSSMutableStyleDeclarationConstIterator const_iterator;

    const_iterator begin() { return const_iterator(this, m_properties.begin()); }

    const_iterator end() { return const_iterator(this, m_properties.end()); }

    void setNode(Node* node) { m_node = node; }

    virtual bool isMutableStyleDeclaration() const { return true; }

    virtual String cssText() const;

    virtual void setCssText(const String&, ExceptionCode&);

    virtual unsigned virtualLength() const;

    unsigned length() const { return m_properties.size(); }

    virtual String item(unsigned index) const;

    virtual PassRefPtr<CSSValue> getPropertyCSSValue(int propertyID) const;

    virtual String getPropertyValue(int propertyID) const;

    virtual bool getPropertyPriority(int propertyID) const;

    virtual int getPropertyShorthand(int propertyID) const;

    virtual bool isPropertyImplicit(int propertyID) const;

    virtual void setProperty(int propertyId, const String& value, bool important, ExceptionCode&);

    virtual String removeProperty(int propertyID, ExceptionCode&);

    virtual PassRefPtr<CSSMutableStyleDeclaration> copy() const;

    bool setProperty(int propertyID, int value, bool important = false, bool notifyChanged = true);

    bool setProperty(int propertyID, const String& value, bool important = false, bool notifyChanged = true);

    String removeProperty(int propertyID, bool notifyChanged = true, bool returnText = false);

    // setLengthProperty treats integers as pixels! (Needed for conversion of HTML attributes.)

    void setLengthProperty(int propertyId, const String& value, bool important, bool multiLength = false);

    void setStringProperty(int propertyId, const String& value, CSSPrimitiveValue::UnitTypes, bool important = false); // parsed string value

    void setImageProperty(int propertyId, const String& url, bool important = false);

    // The following parses an entire new style declaration.

    void parseDeclaration(const String& styleDeclaration);

    // Besides adding the properties, this also removes any existing properties with these IDs.

    // It does no notification since it's called by the parser.

    void addParsedProperties(const CSSProperty* const *, int numProperties);

    // This does no change notifications since it's only called by createMarkup.

    void addParsedProperty(const CSSProperty&);

    PassRefPtr<CSSMutableStyleDeclaration> copyBlockProperties() const;

    void removeBlockProperties();

    void removePropertiesInSet(const int* set, unsigned length, bool notifyChanged = true);

    void merge(CSSMutableStyleDeclaration*, bool argOverridesOnConflict = true);

    bool hasVariableDependentValue() const { return m_variableDependentValueCount > 0; }

    void setStrictParsing(bool b) { m_strictParsing = b; }

    bool useStrictParsing() const { return m_strictParsing; }

    void addSubresourceStyleURLs(ListHashSet<KURL>&);

protected:

    CSSMutableStyleDeclaration(CSSRule* parentRule);

private:

    CSSMutableStyleDeclaration();

    CSSMutableStyleDeclaration(CSSRule* parentRule, const Vector<CSSProperty>&, unsigned variableDependentValueCount);

    CSSMutableStyleDeclaration(CSSRule* parentRule, const CSSProperty* const *, int numProperties);

    virtual PassRefPtr<CSSMutableStyleDeclaration> makeMutable();

    void setNeedsStyleRecalc();

    String getShorthandValue(const int* properties, int number) const;

    String getCommonValue(const int* properties, int number) const;

    String getLayeredShorthandValue(const int* properties, unsigned number) const;

    String get4Values(const int* properties) const;

    void setPropertyInternal(const CSSProperty&, CSSProperty* slot = 0);

    bool removeShorthandProperty(int propertyID, bool notifyChanged);

    Vector<CSSProperty>::const_iterator findPropertyWithId(int propertyId) const;

    Vector<CSSProperty>::iterator findPropertyWithId(int propertyId);

    Vector<CSSProperty, 4> m_properties;

    Node* m_node;

    unsigned m_variableDependentValueCount : 24;

    bool m_strictParsing : 1;

#ifndef NDEBUG

    unsigned m_iteratorCount : 4;

#endif

    friend class CSSMutableStyleDeclarationConstIterator;

};

inline CSSMutableStyleDeclarationConstIterator::CSSMutableStyleDeclarationConstIterator(const CSSMutableStyleDeclaration* decl, CSSProperty* current) 

: m_decl(decl)

, m_current(current)

{ 

#ifndef NDEBUG

    const_cast<CSSMutableStyleDeclaration*>(m_decl)->m_iteratorCount++; 

#endif

}

inline CSSMutableStyleDeclarationConstIterator::CSSMutableStyleDeclarationConstIterator(const CSSMutableStyleDeclarationConstIterator& o)

: m_decl(o.m_decl)

, m_current(o.m_current)

{

#ifndef NDEBUG

    const_cast<CSSMutableStyleDeclaration*>(m_decl)->m_iteratorCount++; 

#endif

}

inline CSSMutableStyleDeclarationConstIterator::~CSSMutableStyleDeclarationConstIterator() 

{

#ifndef NDEBUG

    const_cast<CSSMutableStyleDeclaration*>(m_decl)->m_iteratorCount--;

#endif

}

inline CSSMutableStyleDeclarationConstIterator& CSSMutableStyleDeclarationConstIterator::operator=(const CSSMutableStyleDeclarationConstIterator& o)

{

    m_decl = o.m_decl;

    m_current = o.m_current;

#ifndef NDEBUG

    const_cast<CSSMutableStyleDeclaration*>(m_decl)->m_iteratorCount++; 

#endif

    return *this;

}

inline CSSMutableStyleDeclarationConstIterator& CSSMutableStyleDeclarationConstIterator::operator++() 

{ 

    ASSERT(m_current != const_cast<CSSMutableStyleDeclaration*>(m_decl)->m_properties.end());

    ++m_current;

    return *this; 

}

inline CSSMutableStyleDeclarationConstIterator& CSSMutableStyleDeclarationConstIterator::operator--() 

{ 

    --m_current; 

    return *this; 

}

} // namespace WebCore

#endif // CSSMutableStyleDeclaration_h