Long live Qt for S60!

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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#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);
+
+    bool hasOnlyWhitespace() const;
+
+    int margin[4];
+    int padding[4];
+
+    friend class QTextHtmlParser;
+};
+Q_DECLARE_TYPEINFO(QTextHtmlParserNode, Q_MOVABLE_TYPE);
+
+
+class QTextHtmlParser
+{
+public:
+    enum Margin {
+        MarginTop,
+        MarginRight,
+        MarginBottom,
+        MarginLeft
+    };
+
+    inline const QTextHtmlParserNode &at(int i) const { return nodes.at(i); }
+    inline QTextHtmlParserNode &operator[](int i) { return nodes[i]; }
+    inline int count() const { return nodes.count(); }
+    inline int last() const { return nodes.count()-1; }
+    int depth(int i) const;
+    int topMargin(int i) const;
+    int bottomMargin(int i) const;
+    inline int leftMargin(int i) const { return margin(i, MarginLeft); }
+    inline int rightMargin(int i) const { return margin(i, MarginRight); }
+
+    inline int topPadding(int i) const { return at(i).padding[MarginTop]; }
+    inline int bottomPadding(int i) const { return at(i).padding[MarginBottom]; }
+    inline int leftPadding(int i) const { return at(i).padding[MarginLeft]; }
+    inline int rightPadding(int i) const { return at(i).padding[MarginRight]; }
+
+    void dumpHtml();
+
+    void parse(const QString &text, const QTextDocument *resourceProvider);
+
+    static int lookupElement(const QString &element);
+protected:
+    QTextHtmlParserNode *newNode(int parent);
+    QVector<QTextHtmlParserNode> nodes;
+    QString txt;
+    int pos, len;
+
+    bool textEditMode;
+
+    void parse();
+    void parseTag();
+    void parseCloseTag();
+    void parseExclamationTag();
+    QString parseEntity();
+    QString parseWord();
+    QTextHtmlParserNode *resolveParent();
+    void resolveNode();
+    QStringList parseAttributes();
+    void applyAttributes(const QStringList &attributes);
+    void eatSpace();
+    inline bool hasPrefix(QChar c, int lookahead = 0) const
+        {return pos + lookahead < len && txt.at(pos) == c; }
+    int margin(int i, int mar) const;
+
+    bool nodeIsChildOf(int i, QTextHTMLElements id) const;
+
+
+#ifndef QT_NO_CSSPARSER
+    QVector<QCss::Declaration> declarationsForNode(int node) const;
+    void resolveStyleSheetImports(const QCss::StyleSheet &sheet);
+    void importStyleSheet(const QString &href);
+
+    struct ExternalStyleSheet
+    {
+        inline ExternalStyleSheet() {}
+        inline ExternalStyleSheet(const QString &_url, const QCss::StyleSheet &_sheet)
+            : url(_url), sheet(_sheet) {}
+        QString url;
+        QCss::StyleSheet sheet;
+    };
+    QVector<ExternalStyleSheet> externalStyleSheets;
+    QVector<QCss::StyleSheet> inlineStyleSheets;
+#endif
+
+    const QTextDocument *resourceProvider;
+};
+
+QT_END_NAMESPACE
+
+#endif // QT_NO_TEXTHTMLPARSER
+
+#endif // QTEXTHTMLPARSER_P_H