source: trunk/src/gui/text/qtexthtmlparser_p.h@ 561

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#ifndef QTEXTHTMLPARSER_P_H
#define QTEXTHTMLPARSER_P_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include "QtCore/qvector.h"
#include "QtGui/qbrush.h"
#include "QtGui/qcolor.h"
#include "QtGui/qfont.h"
#include "QtGui/qtextdocument.h"
#include "QtGui/qtextcursor.h"
#include "private/qtextformat_p.h"
#include "private/qtextdocument_p.h"
#include "private/qcssparser_p.h"

#ifndef QT_NO_TEXTHTMLPARSER

QT_BEGIN_NAMESPACE

enum QTextHTMLElements {
    Html_unknown = -1,
    Html_qt = 0,
    Html_body,

    Html_a,
    Html_em,
    Html_i,
    Html_big,
    Html_small,
    Html_strong,
    Html_b,
    Html_cite,
    Html_address,
    Html_var,
    Html_dfn,

    Html_h1,
    Html_h2,
    Html_h3,
    Html_h4,
    Html_h5,
    Html_h6,
    Html_p,
    Html_center,

    Html_font,

    Html_ul,
    Html_ol,
    Html_li,

    Html_code,
    Html_tt,
    Html_kbd,
    Html_samp,

    Html_img,
    Html_br,
    Html_hr,

    Html_sub,
    Html_sup,

    Html_pre,
    Html_blockquote,
    Html_head,
    Html_div,
    Html_span,
    Html_dl,
    Html_dt,
    Html_dd,
    Html_u,
    Html_s,
    Html_nobr,

    // tables
    Html_table,
    Html_tr,
    Html_td,
    Html_th,
    Html_thead,
    Html_tbody,
    Html_tfoot,
    Html_caption,

    // misc...
    Html_html,
    Html_style,
    Html_title,
    Html_meta,
    Html_link,
    Html_script,

    Html_NumElements
};

struct QTextHtmlElement
{
    const char *name;
    QTextHTMLElements id;
    enum DisplayMode { DisplayBlock, DisplayInline, DisplayTable, DisplayNone } displayMode;
};

class QTextHtmlParser;

struct QTextHtmlParserNode {
    enum WhiteSpaceMode {
        WhiteSpaceNormal,
        WhiteSpacePre,
        WhiteSpaceNoWrap,
        WhiteSpacePreWrap,
        WhiteSpaceModeUndefined = -1
    };

    QTextHtmlParserNode();
    QString tag;
    QString text;
    QStringList attributes;
    int parent;
    QVector<int> children;
    QTextHTMLElements id;
    QTextCharFormat charFormat;
    QTextBlockFormat blockFormat;
    uint cssFloat : 2;
    uint hasOwnListStyle : 1;
    uint hasCssListIndent : 1;
    uint isEmptyParagraph : 1;
    uint isTextFrame : 1;
    uint isRootFrame : 1;
    uint displayMode : 3; // QTextHtmlElement::DisplayMode
    uint hasHref : 1;
    QTextListFormat::Style listStyle;
    QString imageName;
    qreal imageWidth;
    qreal imageHeight;
    QTextLength width;
    QTextLength height;
    qreal tableBorder;
    int tableCellRowSpan;
    int tableCellColSpan;
    qreal tableCellSpacing;
    qreal tableCellPadding;
    QBrush borderBrush;
    QTextFrameFormat::BorderStyle borderStyle;
    int userState;

    int cssListIndent;

    WhiteSpaceMode wsm;

    inline bool isListStart() const
    { return id == Html_ol || id == Html_ul; }
    inline bool isTableCell() const
    { return id == Html_td || id == Html_th; }
    inline bool isBlock() const
    { return displayMode == QTextHtmlElement::DisplayBlock; }

    inline bool isNotSelfNesting() const
    { return id == Html_p || id == Html_li; }

    inline bool allowedInContext(int parentId) const
    {
        switch (id) {
            case Html_dd:
            case Html_dt: return (parentId == Html_dl);
            case Html_tr: return (parentId == Html_table
                                  || parentId == Html_thead
                                  || parentId == Html_tbody
                                  || parentId == Html_tfoot
                                 );
            case Html_th:
            case Html_td: return (parentId == Html_tr);
            case Html_thead:
            case Html_tbody:
            case Html_tfoot: return (parentId == Html_table);
            case Html_caption: return (parentId == Html_table);
            case Html_body: return parentId != Html_head;
            default: break;
        }
        return true;
    }

    inline bool mayNotHaveChildren() const
    { return id == Html_img || id == Html_hr || id == Html_br || id == Html_meta; }

    void initializeProperties(const QTextHtmlParserNode *parent, const QTextHtmlParser *parser);

    inline int uncollapsedMargin(int mar) const { return margin[mar]; }

    bool isNestedList(const QTextHtmlParser *parser) const;

    void parseStyleAttribute(const QString &value, const QTextDocument *resourceProvider);

#ifndef QT_NO_CSSPARSER
    void applyCssDeclarations(const QVector<QCss::Declaration> &declarations, const QTextDocument *resourceProvider);

    void setListStyle(const QVector<QCss::Value> &cssValues);
#endif

    void applyBackgroundImage(const QString &url, const QTextDocument *resourceProvider);