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#include <QtTest/QtTest>

#include <qcoreapplication.h>
#include <qdebug.h>
#include <qsettings.h>
#include <qtextformat.h>
#include <qtextdocument.h>
#include <qtextcursor.h>
#include <qtextobject.h>
#include <qtextlayout.h>
#include <qabstracttextdocumentlayout.h>

class tst_QTextFormat : public QObject
{
Q_OBJECT

private slots:
    void getSetCheck();
    void defaultAlignment();
    void testQTextCharFormat() const;
    void testUnderlinePropertyPrecedence();
    void toFormat();
    void resolveFont();
    void getSetTabs();
    void testTabsUsed();
    void testFontStyleSetters();
};

/*! \internal
  This (used to) trigger a crash in:
 
    QDataStream &operator>>(QDataStream &stream, QTextFormat &fmt)

  which is most easily produced through QSettings.
 */
void tst_QTextFormat::testQTextCharFormat() const
{
    QSettings settings("test", "test");
    QTextCharFormat test;

    settings.value("test", test);
}

// Testing get/set functions
void tst_QTextFormat::getSetCheck()
{
    QTextFormat obj1;
    // int QTextFormat::objectIndex()
    // void QTextFormat::setObjectIndex(int)
    obj1.setObjectIndex(0);
    QCOMPARE(0, obj1.objectIndex());
    obj1.setObjectIndex(INT_MIN);
    QCOMPARE(INT_MIN, obj1.objectIndex());
    obj1.setObjectIndex(INT_MAX);
    QCOMPARE(INT_MAX, obj1.objectIndex());
}

void tst_QTextFormat::defaultAlignment()
{
    QTextBlockFormat fmt;
    QVERIFY(!fmt.hasProperty(QTextFormat::BlockAlignment));
    QCOMPARE(fmt.intProperty(QTextFormat::BlockAlignment), 0);
    QVERIFY(fmt.alignment() == Qt::AlignLeft);
}

void tst_QTextFormat::testUnderlinePropertyPrecedence()
{
    QTextCharFormat format;
    // use normal accessors and check internal state
    format.setUnderlineStyle(QTextCharFormat::NoUnderline);
    QCOMPARE(format.property(QTextFormat::FontUnderline).isNull(), false);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).isNull(), false);
    QCOMPARE(format.property(QTextFormat::FontUnderline).toBool(), false);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).toInt(), 0);

    format = QTextCharFormat();
    format.setUnderlineStyle(QTextCharFormat::SingleUnderline);
    QCOMPARE(format.property(QTextFormat::FontUnderline).isNull(), false);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).isNull(), false);
    QCOMPARE(format.property(QTextFormat::FontUnderline).toBool(), true);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).toInt(), 1);

    format = QTextCharFormat();
    format.setUnderlineStyle(QTextCharFormat::DotLine);
    QCOMPARE(format.property(QTextFormat::FontUnderline).isNull(), false);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).isNull(), false);
    QCOMPARE(format.property(QTextFormat::FontUnderline).toBool(), false);
    QVERIFY(format.property(QTextFormat::TextUnderlineStyle).toInt() > 0);

    // override accessors and use setProperty to create a false state.
    // then check font()
    format = QTextCharFormat();
    format.setProperty(QTextCharFormat::FontUnderline, true);
    QCOMPARE(format.property(QTextFormat::FontUnderline).isNull(), false);
    QCOMPARE(format.property(QTextFormat::TextUnderlineStyle).isNull(), true);
    QCOMPARE(format.fontUnderline(), true);
    QCOMPARE(format.font().underline(), true);

    format = QTextCharFormat();
    // create conflict. Should use the new property
    format.setProperty(QTextCharFormat::TextUnderlineStyle, QTextCharFormat::SingleUnderline);
    format.setProperty(QTextCharFormat::FontUnderline, false);
    QCOMPARE(format.fontUnderline(), true);
    QCOMPARE(format.font().underline(), true);

    format = QTextCharFormat();
    // create conflict. Should use the new property
    format.setProperty(QTextCharFormat::TextUnderlineStyle, QTextCharFormat::NoUnderline);
    format.setProperty(QTextCharFormat::FontUnderline, true);
    QCOMPARE(format.fontUnderline(), false);
    QCOMPARE(format.font().underline(), false);

    // do it again, but reverse the ordering (we use a QVector internally, so test a LOT ;)
    // create conflict. Should use the new property
    format.setProperty(QTextCharFormat::FontUnderline, false);
    format.setProperty(QTextCharFormat::TextUnderlineStyle, QTextCharFormat::SingleUnderline);
    QCOMPARE(format.fontUnderline(), true);
    QCOMPARE(format.font().underline(), true);

    format = QTextCharFormat();
    // create conflict. Should use the new property
    format.setProperty(QTextCharFormat::FontUnderline, true);
    format.setProperty(QTextCharFormat::TextUnderlineStyle, QTextCharFormat::NoUnderline);
    QCOMPARE(format.fontUnderline(), false);
    QCOMPARE(format.font().underline(), false);
}

void tst_QTextFormat::toFormat()
{
    {
        QTextFormat fmt = QTextFrameFormat();
        QCOMPARE(fmt.toFrameFormat().type(), int(QTextFormat::FrameFormat));
    }

    {
        QTextFormat fmt = QTextTableFormat();
        QCOMPARE(fmt.toTableFormat().type(), int(QTextFormat::FrameFormat));
        QCOMPARE(fmt.toTableFormat().objectType(), int(QTextFormat::TableObject));
    }

    {
        QTextFormat fmt = QTextBlockFormat();
        QCOMPARE(fmt.toBlockFormat().type(), int(QTextFormat::BlockFormat));
    }

    {
        QTextFormat fmt = QTextCharFormat();
        QCOMPARE(fmt.toCharFormat().type(), int(QTextFormat::CharFormat));
    }

    {
        QTextFormat fmt = QTextListFormat();
        QCOMPARE(fmt.toListFormat().type(), int(QTextFormat::ListFormat));
    }
}

void tst_QTextFormat::resolveFont()
{
    QTextDocument doc;

    QTextCharFormat fmt;
    fmt.setProperty(QTextFormat::ForegroundBrush, Qt::blue);
    fmt.setProperty(QTextFormat::FontItalic, true);
    QTextCursor(&doc).insertText("Test", fmt);

    QVector<QTextFormat> formats = doc.allFormats();
    QCOMPARE(formats.count(), 3);

    QVERIFY(formats.at(2).type() == QTextFormat::CharFormat);
    fmt = formats.at(2).toCharFormat();

    QVERIFY(!fmt.font().underline());
    QVERIFY(fmt.hasProperty(QTextFormat::ForegroundBrush));

    QFont f;
    f.setUnderline(true);
    doc.setDefaultFont(f);
    formats = doc.allFormats();
    fmt = formats.at(2).toCharFormat();

    QVERIFY(fmt.font().underline());
    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));

    // verify that deleting a non-existent property does not affect the font resolving

    QVERIFY(!fmt.hasProperty(QTextFormat::BackgroundBrush));
    fmt.clearProperty(QTextFormat::BackgroundBrush);
    QVERIFY(!fmt.hasProperty(QTextFormat::BackgroundBrush));

    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));
    QVERIFY(fmt.font().underline());

    // verify that deleting an existent but font _unrelated_ property does not affect the font resolving

    QVERIFY(fmt.hasProperty(QTextFormat::ForegroundBrush));
    fmt.clearProperty(QTextFormat::ForegroundBrush);
    QVERIFY(!fmt.hasProperty(QTextFormat::ForegroundBrush));

    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));
    QVERIFY(fmt.font().underline());

    // verify that removing a font property _does_ clear the resolving

    QVERIFY(fmt.hasProperty(QTextFormat::FontItalic));
    fmt.clearProperty(QTextFormat::FontItalic);
    QVERIFY(!fmt.hasProperty(QTextFormat::FontItalic));

    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));
    QVERIFY(!fmt.font().underline());
    QVERIFY(!fmt.font().italic());

    // reset
    fmt = formats.at(2).toCharFormat();

    QVERIFY(fmt.font().underline());
    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));

    // verify that _setting_ an unrelated property does _not_ affect the resolving

    QVERIFY(!fmt.hasProperty(QTextFormat::IsAnchor));
    fmt.setProperty(QTextFormat::IsAnchor, true);
    QVERIFY(fmt.hasProperty(QTextFormat::IsAnchor));

    QVERIFY(fmt.font().underline());
    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));

    // verify that setting a _related_ font property does affect the resolving
    //
    QVERIFY(!fmt.hasProperty(QTextFormat::FontStrikeOut));
    fmt.setProperty(QTextFormat::FontStrikeOut, true);
    QVERIFY(fmt.hasProperty(QTextFormat::FontStrikeOut));

    QVERIFY(!fmt.font().underline());
    QVERIFY(!fmt.hasProperty(QTextFormat::FontUnderline));
    QVERIFY(fmt.font().strikeOut());
}

void tst_QTextFormat::getSetTabs()
{
    class Comparator {
      public:
        Comparator(const QList<QTextOption::Tab> &tabs, const QList<QTextOption::Tab> &tabs2)
        {
            QCOMPARE(tabs.count(), tabs2.count());
            for(int i=0; i < tabs.count(); i++) {
                QTextOption::Tab t1 = tabs[i];
                QTextOption::Tab t2 = tabs2[i];
                QCOMPARE(t1.position, t2.position);
                QCOMPARE(t1.type, t2.type);
                QCOMPARE(t1.delimiter, t2.delimiter);
            }
        }
    };

    QList<QTextOption::Tab> tabs;
    QTextBlockFormat format;
    format.setTabPositions(tabs);
    Comparator c1(tabs, format.tabPositions());

    QTextOption::Tab tab1;
    tab1.position = 1234;
    tabs.append(tab1);
    format.setTabPositions(tabs);
    Comparator c2(tabs, format.tabPositions());

    QTextOption::Tab tab2(3456, QTextOption::RightTab, QChar('x'));
    tabs.append(tab2);
    format.setTabPositions(tabs);
    Comparator c3(tabs, format.tabPositions());
}

void tst_QTextFormat::testTabsUsed()
{
    QTextDocument doc;
    QTextCursor cursor(&doc);

    QList<QTextOption::Tab> tabs;
    QTextBlockFormat format;
    QTextOption::Tab tab;
    tab.position = 100;
    tabs.append(tab);
    format.setTabPositions(tabs);
    cursor.mergeBlockFormat(format);
    cursor.insertText("foo\tbar");
    //doc.setPageSize(QSizeF(200, 200));
    doc.documentLayout()->pageCount(); // force layout;

    QTextBlock block = doc.begin();
    QTextLayout *layout = block.layout();
    QVERIFY(layout);
    QCOMPARE(layout->lineCount(), 1);
    QTextLine line = layout->lineAt(0);
    QCOMPARE(line.cursorToX(4), 100.);

    QTextOption option = layout->textOption();
    QCOMPARE(option.tabs().count(), tabs.count());

}

void tst_QTextFormat::testFontStyleSetters()
{
    QTextCharFormat format;

    // test the setters
    format.setFontStyleHint(QFont::Serif);
    QCOMPARE(format.font().styleHint(), QFont::Serif);
    QCOMPARE(format.font().styleStrategy(), QFont::PreferDefault);
    format.setFontStyleStrategy(QFont::PreferOutline);
    QCOMPARE(format.font().styleStrategy(), QFont::PreferOutline);

    // test setting properties through setFont()
    QFont font;
    font.setStyleHint(QFont::SansSerif, QFont::PreferAntialias);
    format.setFont(font);
    QCOMPARE(format.font().styleHint(), QFont::SansSerif);
    QCOMPARE(format.font().styleStrategy(), QFont::PreferAntialias);

    // test kerning
    format.setFontKerning(false);
    QCOMPARE(format.font().kerning(), false);
    format.setFontKerning(true);
    QCOMPARE(format.font().kerning(), true);
    font.setKerning(false);
    format.setFont(font);
    QCOMPARE(format.font().kerning(), false);
}

QTEST_MAIN(tst_QTextFormat)
#include "tst_qtextformat.moc"