CssSimpleSelector Class Reference

A simple selector, i.e. a type/universal selector followed by attribute, id or pseudo-class selectors. More...

Inheritance diagram for CssSimpleSelector:

Public Member Functions
	CssSimpleSelector (const QString &token)
bool	match (const QDomElement &e) override
	Matches the given element.
int	priority () override
QString	toString () const override
	Returns string representation of selector.
	~CssSimpleSelector () override
Public Member Functions inherited from CssSelectorBase
virtual	~CssSelectorBase ()

Private Member Functions
void	compile ()

Private Attributes
QList< CssSelectorBase * >	m_selectors
QString	m_token

Detailed Description

A simple selector, i.e. a type/universal selector followed by attribute, id or pseudo-class selectors.

Definition at line 232 of file SvgCssHelper.cpp.

Constructor & Destructor Documentation

CssSimpleSelector()

CssSimpleSelector::CssSimpleSelector ( const QString & token )

inline

Definition at line 235 of file SvgCssHelper.cpp.

    : m_token(token)
    {
        compile();
    }

References compile().

~CssSimpleSelector()

CssSimpleSelector::~CssSimpleSelector ( )

inlineoverride

Definition at line 240 of file SvgCssHelper.cpp.

    {
        qDeleteAll(m_selectors);
    }

References m_selectors.

Member Function Documentation

compile()

void CssSimpleSelector::compile ( )

inlineprivate

Definition at line 273 of file SvgCssHelper.cpp.

    {
        if (m_token == "*") {
            m_selectors.append(new UniversalSelector());
            return;
        }
 
        enum {
            Start,
            Finish,
            Bad,
            InType,
            InId,
            InAttribute,
            InClassAttribute,
            InPseudoClass
        } state;
 
        // add terminator to string
        QString expr = m_token + QChar();
        int i = 0;
        state = Start;
 
        QString token;
        QString sep("#[:.");
        // split into base selectors
        while((state != Finish) && (state != Bad) && (i < expr.length())) {
            QChar ch = expr[i];
            switch(state) {
                case Start:
                    token += ch;
                    if (ch == '#')
                        state = InId;
                    else if (ch == '[')
                        state = InAttribute;
                    else if (ch == ':')
                        state = InPseudoClass;
                    else if (ch == '.')
                        state = InClassAttribute;
                    else if (ch != '*')
                        state = InType;
                    break;
                case InAttribute:
                    if (ch.isNull()) {
                        // reset state and token string
                        state = Finish;
                        token.clear();
                        continue;
                    } else {
                        token += ch;
                        if (ch == ']') {
                            m_selectors.append(new AttributeSelector(token));
                            state = Start;
                            token.clear();
                        }
                    }
                    break;
                case InType:
                case InId:
                case InClassAttribute:
                case InPseudoClass:
                    // are we at the start of the next selector or even finished?
                    if (sep.contains(ch) || ch.isNull()) {
                        if (state == InType)
                            m_selectors.append(new TypeSelector(token));
                        else if (state == InId)
                            m_selectors.append(new IdSelector(token));
                        else if ( state == InClassAttribute)
                            m_selectors.append(new AttributeSelector("[class~="+token.mid(1)+']'));
                        else if (state == InPseudoClass) {
                            m_selectors.append(new PseudoClassSelector(token));
                        }
                        // reset state and token string
                        state = ch.isNull() ? Finish : Start;
                        token.clear();
                        continue;
                    } else {
                        // append character to current token
                        if (!ch.isNull())
                            token += ch;
                    }
                    break;
                default:
                    break;
            }
            i++;
        }
    }

References m_selectors, and m_token.

match()

bool CssSimpleSelector::match ( const QDomElement & )

inlineoverridevirtual

Matches the given element.

Implements CssSelectorBase.

Definition at line 245 of file SvgCssHelper.cpp.

    {
        Q_FOREACH (CssSelectorBase *s, m_selectors) {
            if (!s->match(e))
                return false;
        }
 
        return true;
    }

References m_selectors, and CssSelectorBase::match().

priority()

int CssSimpleSelector::priority ( )

inlineoverridevirtual

Returns priority of selector see http://www.w3.org/TR/1998/REC-CSS2-19980512/cascade.html#specificity

Reimplemented from CssSelectorBase.

Definition at line 263 of file SvgCssHelper.cpp.

    {
        int p = 0;
        Q_FOREACH (CssSelectorBase *s, m_selectors) {
            p += s->priority();
        }
        return p;
    }

References m_selectors, p, and CssSelectorBase::priority().

toString()

QString CssSimpleSelector::toString ( ) const

inlineoverridevirtual

Returns string representation of selector.

Reimplemented from CssSelectorBase.

Definition at line 255 of file SvgCssHelper.cpp.

    {
        QString str;
        Q_FOREACH (CssSelectorBase *s, m_selectors) {
            str += s->toString();
        }
        return str;
    }

References m_selectors, and CssSelectorBase::toString().

Member Data Documentation

m_selectors

QList<CssSelectorBase*> CssSimpleSelector::m_selectors

private

Definition at line 362 of file SvgCssHelper.cpp.

m_token

QString CssSimpleSelector::m_token

private

Definition at line 363 of file SvgCssHelper.cpp.

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The documentation for this class was generated from the following file:

• libs/flake/svg/SvgCssHelper.cpp