AttributeSelector Class Reference

Attribute selector, matching existence or content of attributes. More...

Inheritance diagram for AttributeSelector:

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

Private Types
enum	MatchType {   Unknown , Exists , Equals , InList ,   StartsWith }

Private Attributes
QString	m_attribute
MatchType	m_type
QString	m_value

Detailed Description

Attribute selector, matching existence or content of attributes.

Definition at line 104 of file SvgCssHelper.cpp.

Member Enumeration Documentation

MatchType

enum AttributeSelector::MatchType

private

Enumerator
Unknown	unknown -> error state
Exists	[att] -> attribute exists
Equals	[att=val] -> attribute value matches exactly val
InList	[att~=val] -> attribute is whitespace separated list where one is val
StartsWith	[att|=val] -> attribute starts with val-

Definition at line 181 of file SvgCssHelper.cpp.

                   {
        Unknown,   
        Exists,    
        Equals,    
        InList,    
        StartsWith 
    };

Constructor & Destructor Documentation

AttributeSelector()

AttributeSelector::AttributeSelector ( const QString & attribute )

inline

Definition at line 107 of file SvgCssHelper.cpp.

    : m_type(Unknown)
    {
        QString pattern = attribute;
        if (pattern.startsWith('['))
            pattern.remove(0,1);
        if (pattern.endsWith(']'))
            pattern.remove(pattern.length()-1,1);
        int equalPos = pattern.indexOf('=');
        if (equalPos == -1) {
            m_type = Exists;
            m_attribute = pattern;
        } else if (equalPos > 0){
            if (pattern[equalPos-1] == '~') {
                m_attribute = pattern.left(equalPos-1);
                m_type = InList;
            } else if(pattern[equalPos-1] == '|') {
                m_attribute = pattern.left(equalPos-1) + '-';
                m_type = StartsWith;
            } else {
                m_attribute = pattern.left(equalPos);
                m_type = Equals;
            }
            m_value = pattern.mid(equalPos+1);
            if (m_value.startsWith(QLatin1Char('"')))
                m_value.remove(0,1);
            if (m_value.endsWith(QLatin1Char('"')))
                m_value.chop(1);
        }
    }

References Equals, Exists, InList, m_attribute, m_type, m_value, and StartsWith.

Member Function Documentation

match()

bool AttributeSelector::match ( const QDomElement & )

inlineoverridevirtual

Matches the given element.

Implements CssSelectorBase.

Definition at line 138 of file SvgCssHelper.cpp.

    {
        switch(m_type) {
            case Exists:
                return e.hasAttribute(m_attribute);
                break;
            case Equals:
                return e.attribute(m_attribute) == m_value;
                break;
            case InList:
                {
                    QStringList tokens = e.attribute(m_attribute).split(' ', Qt::SkipEmptyParts);
                    return tokens.contains(m_value);
                }
                break;
            case StartsWith:
                return e.attribute(m_attribute).startsWith(m_value);
                break;
            default:
                return false;
        }
    }

References Equals, Exists, InList, m_attribute, m_type, m_value, and StartsWith.

priority()

int AttributeSelector::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 175 of file SvgCssHelper.cpp.

    {
        return 10;
    }

toString()

QString AttributeSelector::toString ( ) const

inlineoverridevirtual

Returns string representation of selector.

Reimplemented from CssSelectorBase.

Definition at line 160 of file SvgCssHelper.cpp.

    {
        QString str('[');
        str += m_attribute;
        if (m_type == Equals) {
            str += '=';
        } else if (m_type == InList) {
            str += "~=";
        } else if (m_type == StartsWith) {
            str += "|=";
        }
        str += m_value;
        str += ']';
        return str;
    }

References Equals, InList, m_attribute, m_type, m_value, and StartsWith.

Member Data Documentation

m_attribute

QString AttributeSelector::m_attribute

private

Definition at line 188 of file SvgCssHelper.cpp.

m_type

MatchType AttributeSelector::m_type

private

Definition at line 190 of file SvgCssHelper.cpp.

m_value

QString AttributeSelector::m_value

private

Definition at line 189 of file SvgCssHelper.cpp.

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

• libs/flake/svg/SvgCssHelper.cpp