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#include <qabstractitemview.h>

#include <QtTest/QtTest>
#include <QtGui/QtGui>
#include "../../shared/util.h"

//TESTED_CLASS=
//TESTED_FILES=

Q_DECLARE_METATYPE(QModelIndex)
#ifndef QT_NO_DRAGANDDROP
Q_DECLARE_METATYPE(QAbstractItemView::DragDropMode)
#endif
Q_DECLARE_METATYPE(QAbstractItemView::EditTriggers)
Q_DECLARE_METATYPE(QAbstractItemView::EditTrigger)

static void initStandardTreeModel(QStandardItemModel *model)
{
    QStandardItem *item;
    item = new QStandardItem(QLatin1String("Row 1 Item"));
    model->insertRow(0, item);

    item = new QStandardItem(QLatin1String("Row 2 Item"));
    item->setCheckable(true);
    model->insertRow(1, item);

    QStandardItem *childItem = new QStandardItem(QLatin1String("Row 2 Child Item"));
    item->setChild(0, childItem);

    item = new QStandardItem(QLatin1String("Row 3 Item"));
    item->setIcon(QIcon());
    model->insertRow(2, item);
}

struct PublicView : public QTreeView
{
    inline void executeDelayedItemsLayout()
    { QTreeView::executeDelayedItemsLayout(); }

    enum PublicCursorAction {
        MoveUp = QAbstractItemView::MoveUp,
        MoveDown = QAbstractItemView::MoveDown,
        MoveLeft = QAbstractItemView::MoveLeft,
        MoveRight = QAbstractItemView::MoveRight,
        MoveHome = QAbstractItemView::MoveHome,
        MoveEnd = QAbstractItemView::MoveEnd,
        MovePageUp = QAbstractItemView::MovePageUp,
        MovePageDown = QAbstractItemView::MovePageDown,
        MoveNext = QAbstractItemView::MoveNext,
        MovePrevious = QAbstractItemView::MovePrevious
    };

    inline QModelIndex moveCursor(PublicCursorAction ca, Qt::KeyboardModifiers kbm)
    { return QTreeView::moveCursor((CursorAction)ca, kbm); }

    inline void setSelection(const QRect &rect, QItemSelectionModel::SelectionFlags command)
    {
        QTreeView::setSelection(rect, command);
    }
    inline int state()
    {
        return QTreeView::state();
    }

    inline int rowHeight(QModelIndex idx) { return QTreeView::rowHeight(idx); }
    inline int indexRowSizeHint(const QModelIndex &index) const { return QTreeView::indexRowSizeHint(index); }

    inline QModelIndexList selectedIndexes() const { return QTreeView::selectedIndexes(); }

    inline QStyleOptionViewItem viewOptions() const { return QTreeView::viewOptions(); }
    inline int sizeHintForColumn(int column) const { return QTreeView::sizeHintForColumn(column); }
};

class tst_QTreeView : public QObject
{
    Q_OBJECT

public:
    tst_QTreeView();
    virtual ~tst_QTreeView();


public slots:
    void initTestCase();
    void cleanupTestCase();
    void init();
    void cleanup();

    void selectionOrderTest();

private slots:
    void getSetCheck();

    // one test per QTreeView property
    void construction();
    void alternatingRowColors();
    void currentIndex_data();
    void currentIndex();
#ifndef QT_NO_DRAGANDDROP
    void dragDropMode_data();
    void dragDropMode();
    void dragDropModeFromDragEnabledAndAcceptDrops_data();
    void dragDropModeFromDragEnabledAndAcceptDrops();
    void dragDropOverwriteMode();
#endif
    void editTriggers_data();
    void editTriggers();
    void hasAutoScroll();
    void horizontalScrollMode();
    void iconSize();
    void indexAt();
    void indexWidget();
    void itemDelegate();
    void itemDelegateForColumnOrRow();
    void keyboardSearch();
    void setModel();
    void openPersistentEditor();
    void rootIndex();

    // specialized tests below
    void setHeader();
    void columnHidden();
    void rowHidden();
    void noDelegate();
    void noModel();
    void emptyModel();
    void removeRows();
    void removeCols();
    void expandAndCollapse_data();
    void expandAndCollapse();
    void expandAndCollapseAll();
    void keyboardNavigation();
    void headerSections();
    void moveCursor_data();
    void moveCursor();
    void setSelection_data();
    void setSelection();
    void extendedSelection_data();
    void extendedSelection();
    void indexAbove();
    void indexBelow();
    void clicked();
    void mouseDoubleClick();
    void rowsAboutToBeRemoved();
    void headerSections_unhideSection();
    void columnAt();
    void scrollTo();
    void rowsAboutToBeRemoved_move();
    void resizeColumnToContents();
    void insertAfterSelect();
    void removeAfterSelect();
    void hiddenItems();
    void spanningItems();
    void rowSizeHint();
    void setSortingEnabled();
    void headerHidden();

    void selection();
    void removeAndInsertExpandedCol0();
    void selectionWithHiddenItems();
    void selectAll();

    void disabledButCheckable();
    void sortByColumn_data();
    void sortByColumn();

    void evilModel_data();
    void evilModel();

    void indexRowSizeHint();
    void addRowsWhileSectionsAreHidden();
    void filterProxyModelCrash();
    void styleOptionViewItem();

    // task-specific tests:
    void task174627_moveLeftToRoot();
    void task171902_expandWith1stColHidden();
    void task203696_hidingColumnsAndRowsn();
    void task211293_removeRootIndex();
    void task216717_updateChildren();
    void task220298_selectColumns();
    void task224091_appendColumns();
    void task225539_deleteModel();
    void task230123_setItemsExpandable();
    void task202039_closePersistentEditor();
    void task238873_avoidAutoReopening();
    void task244304_clickOnDecoration();
    void task246536_scrollbarsNotWorking();
    void task250683_wrongSectionSize();
    void task239271_addRowsWithFirstColumnHidden();
    void task254234_proxySort();
    void task248022_changeSelection();
    void task245654_changeModelAndExpandAll();
};

class QtTestModel: public QAbstractItemModel
{
public:
    QtTestModel(QObject *parent = 0): QAbstractItemModel(parent),
       fetched(false), rows(0), cols(0), levels(INT_MAX), wrongIndex(false) { init(); }

    QtTestModel(int _rows, int _cols, QObject *parent = 0): QAbstractItemModel(parent),
       rows(_rows), cols(_cols), levels(INT_MAX), wrongIndex(false) { init(); }

    void init() {
        decorationsEnabled = false;
    }

    inline qint32 level(const QModelIndex &index) const {
        return index.isValid() ? qint32(index.internalId()) : qint32(-1);
    }

    bool canFetchMore(const QModelIndex &) const {
        return !fetched;
    }

    void fetchMore(const QModelIndex &) {
        fetched = true;
    }

    bool hasChildren(const QModelIndex &parent = QModelIndex()) const {
        bool hasFetched = fetched;
        fetched = true;
        bool r = QAbstractItemModel::hasChildren(parent);
        fetched = hasFetched;
        return r;
    }

    int rowCount(const QModelIndex& parent = QModelIndex()) const {
        Q_ASSERT(fetched);
        if ((parent.column() > 0) || (level(parent) > levels))
            return 0;
        return rows;
    }
    int columnCount(const QModelIndex& parent = QModelIndex()) const {
        if ((parent.column() > 0) || (level(parent) > levels))
            return 0;
        return cols;
    }

    bool isEditable(const QModelIndex &index) const {
        if (index.isValid())
            return true;
        return false;
    }

    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const
    {
        if (row < 0 || column < 0 || (level(parent) > levels) || column >= cols || row >= rows) {
            return QModelIndex();
        }
        QModelIndex i = createIndex(row, column, level(parent) + 1);
        parentHash[i] = parent;
        return i;
    }

    QModelIndex parent(const QModelIndex &index) const
    {
        if (!parentHash.contains(index))
            return QModelIndex();
        return parentHash[index];
    }

    QVariant data(const QModelIndex &idx, int role) const
    {
        if (!idx.isValid())
            return QVariant();

        if (role == Qt::DisplayRole) {
            if (idx.row() < 0 || idx.column() < 0 || idx.column() >= cols || idx.row() >= rows) {
                wrongIndex = true;
                qWarning("Invalid modelIndex [%d,%d,%p]", idx.row(), idx.column(),
                         idx.internalPointer());
            }
            if (idx.row() & 1)
                return QString("[%1,%2,%3] - this item is extra wide").arg(idx.row()).arg(idx.column()).arg(level(idx));
            return QString("[%1,%2,%3]").arg(idx.row()).arg(idx.column()).arg(level(idx));
        }
        if (decorationsEnabled && role == Qt::DecorationRole) {
            QPixmap pm(16,16);
            pm.fill(QColor::fromHsv((idx.column() % 16)*8 + 64, 254, (idx.row() % 16)*8 + 32));
            return pm;
        }
        return QVariant();
    }

    void removeLastRow()
    {
        beginRemoveRows(QModelIndex(), rows - 1, rows - 1);
        --rows;
        endRemoveRows();
    }

    void removeAllRows()
    {
        beginRemoveRows(QModelIndex(), 0, rows - 1);
        rows = 0;
        endRemoveRows();
    }

    void removeLastColumn()
    {
        beginRemoveColumns(QModelIndex(), cols - 1, cols - 1);
        --cols;
        endRemoveColumns();
    }

    void removeAllColumns()
    {
        beginRemoveColumns(QModelIndex(), 0, cols - 1);
        cols = 0;
        endRemoveColumns();
    }

    void insertNewRow()
    {
        beginInsertRows(QModelIndex(), rows - 1, rows - 1);
        ++rows;
        endInsertRows();
    }

    void setDecorationsEnabled(bool enable)
    {
        decorationsEnabled = enable;
    }

    mutable bool fetched;
    bool decorationsEnabled;
    int rows, cols;
    int levels;
    mutable bool wrongIndex;
    mutable QMap<QModelIndex,QModelIndex> parentHash;
};

tst_QTreeView::tst_QTreeView()
{
}

tst_QTreeView::~tst_QTreeView()
{
}

void tst_QTreeView::initTestCase()
{
#ifdef Q_OS_WINCE //disable magic for WindowsCE
    qApp->setAutoMaximizeThreshold(-1);
#endif
    qRegisterMetaType<QModelIndex>("QModelIndex");
}

void tst_QTreeView::cleanupTestCase()
{
}

void tst_QTreeView::init()
{
}

void tst_QTreeView::cleanup()
{
}

// Testing get/set functions
void tst_QTreeView::getSetCheck()
{
    QTreeView obj1;

    // int QTreeView::indentation()
    // void QTreeView::setIndentation(int)
    QCOMPARE(obj1.indentation(), 20);
    obj1.setIndentation(0);
    QCOMPARE(obj1.indentation(), 0);
    obj1.setIndentation(INT_MIN);
    QCOMPARE(obj1.indentation(), INT_MIN);
    obj1.setIndentation(INT_MAX);
    QCOMPARE(obj1.indentation(), INT_MAX);

    // bool QTreeView::rootIsDecorated()
    // void QTreeView::setRootIsDecorated(bool)
    QCOMPARE(obj1.rootIsDecorated(), true);
    obj1.setRootIsDecorated(false);
    QCOMPARE(obj1.rootIsDecorated(), false);
    obj1.setRootIsDecorated(true);
    QCOMPARE(obj1.rootIsDecorated(), true);

    // bool QTreeView::uniformRowHeights()
    // void QTreeView::setUniformRowHeights(bool)
    QCOMPARE(obj1.uniformRowHeights(), false);
    obj1.setUniformRowHeights(false);
    QCOMPARE(obj1.uniformRowHeights(), false);
    obj1.setUniformRowHeights(true);
    QCOMPARE(obj1.uniformRowHeights(), true);

    // bool QTreeView::itemsExpandable()
    // void QTreeView::setItemsExpandable(bool)
    QCOMPARE(obj1.itemsExpandable(), true);
    obj1.setItemsExpandable(false);
    QCOMPARE(obj1.itemsExpandable(), false);
    obj1.setItemsExpandable(true);
    QCOMPARE(obj1.itemsExpandable(), true);

    // bool QTreeView::allColumnsShowFocus
    // void QTreeView::setAllColumnsShowFocus
    QCOMPARE(obj1.allColumnsShowFocus(), false);
    obj1.setAllColumnsShowFocus(false);
    QCOMPARE(obj1.allColumnsShowFocus(), false);
    obj1.setAllColumnsShowFocus(true);
    QCOMPARE(obj1.allColumnsShowFocus(), true);

    // bool QTreeView::isAnimated
    // void QTreeView::setAnimated
    QCOMPARE(obj1.isAnimated(), false);
    obj1.setAnimated(false);
    QCOMPARE(obj1.isAnimated(), false);
    obj1.setAnimated(true);
    QCOMPARE(obj1.isAnimated(), true);

    // bool QTreeView::setSortingEnabled
    // void QTreeView::isSortingEnabled
    QCOMPARE(obj1.isSortingEnabled(), false);
    obj1.setSortingEnabled(false);
    QCOMPARE(obj1.isSortingEnabled(), false);
    obj1.setSortingEnabled(true);
    QCOMPARE(obj1.isSortingEnabled(), true);
}

void tst_QTreeView::construction()
{
    QTreeView view;

    // QAbstractItemView properties
    QVERIFY(!view.alternatingRowColors());
    QCOMPARE(view.currentIndex(), QModelIndex());
#ifndef QT_NO_DRAGANDDROP
    QCOMPARE(view.dragDropMode(), QAbstractItemView::NoDragDrop);
    QVERIFY(!view.dragDropOverwriteMode());
    QVERIFY(!view.dragEnabled());
#endif
    QCOMPARE(view.editTriggers(), QAbstractItemView::EditKeyPressed | QAbstractItemView::DoubleClicked);
    QVERIFY(view.hasAutoScroll());
    QCOMPARE(view.horizontalScrollMode(), QAbstractItemView::ScrollPerPixel);
    QCOMPARE(view.iconSize(), QSize());
    QCOMPARE(view.indexAt(QPoint()), QModelIndex());
    QVERIFY(!view.indexWidget(QModelIndex()));
    QVERIFY(qobject_cast<QStyledItemDelegate *>(view.itemDelegate()));
    QVERIFY(!view.itemDelegateForColumn(-1));
    QVERIFY(!view.itemDelegateForColumn(0));
    QVERIFY(!view.itemDelegateForColumn(1));
    QVERIFY(!view.itemDelegateForRow(-1));
    QVERIFY(!view.itemDelegateForRow(0));
    QVERIFY(!view.itemDelegateForRow(1));
    QVERIFY(!view.model());
    QCOMPARE(view.rootIndex(), QModelIndex());
    QCOMPARE(view.selectionBehavior(), QAbstractItemView::SelectRows);
    QCOMPARE(view.selectionMode(), QAbstractItemView::SingleSelection);
    QVERIFY(!view.selectionModel());
#ifndef QT_NO_DRAGANDDROP
    QVERIFY(view.showDropIndicator());
#endif
    QCOMPARE(view.QAbstractItemView::sizeHintForColumn(-1), -1); // <- protected in QTreeView
    QCOMPARE(view.QAbstractItemView::sizeHintForColumn(0), -1); // <- protected in QTreeView
    QCOMPARE(view.QAbstractItemView::sizeHintForColumn(1), -1); // <- protected in QTreeView
    QCOMPARE(view.sizeHintForIndex(QModelIndex()), QSize());
    QCOMPARE(view.sizeHintForRow(-1), -1);
    QCOMPARE(view.sizeHintForRow(0), -1);
    QCOMPARE(view.sizeHintForRow(1), -1);
    QVERIFY(!view.tabKeyNavigation());
    QCOMPARE(view.textElideMode(), Qt::ElideRight);
    QCOMPARE(view.verticalScrollMode(), QAbstractItemView::ScrollPerItem);
    QCOMPARE(view.visualRect(QModelIndex()), QRect());

    // QTreeView properties
    QVERIFY(!view.allColumnsShowFocus());
    QCOMPARE(view.autoExpandDelay(), -1);
    QCOMPARE(view.columnAt(-1), -1);
    QCOMPARE(view.columnAt(0), -1);
    QCOMPARE(view.columnAt(1), -1);
    QCOMPARE(view.columnViewportPosition(-1), -1);
    QCOMPARE(view.columnViewportPosition(0), -1);
    QCOMPARE(view.columnViewportPosition(1), -1);
    QCOMPARE(view.columnWidth(-1), 0);
    QCOMPARE(view.columnWidth(0), 0);
    QCOMPARE(view.columnWidth(1), 0);
    QVERIFY(view.header());
    QCOMPARE(view.indentation(), 20);
    QCOMPARE(view.indexAbove(QModelIndex()), QModelIndex());
    QCOMPARE(view.indexBelow(QModelIndex()), QModelIndex());
    QVERIFY(!view.isAnimated());
    QVERIFY(!view.isColumnHidden(-1));
    QVERIFY(!view.isColumnHidden(0));
    QVERIFY(!view.isColumnHidden(1));
    QVERIFY(!view.isExpanded(QModelIndex()));
    QVERIFY(!view.isRowHidden(-1, QModelIndex()));
    QVERIFY(!view.isRowHidden(0, QModelIndex()));
    QVERIFY(!view.isRowHidden(1, QModelIndex()));
    QVERIFY(!view.isFirstColumnSpanned(-1, QModelIndex()));
    QVERIFY(!view.isFirstColumnSpanned(0, QModelIndex()));
    QVERIFY(!view.isFirstColumnSpanned(1, QModelIndex()));
    QVERIFY(!view.isSortingEnabled());
    QVERIFY(view.itemsExpandable());
    QVERIFY(view.rootIsDecorated());
    QVERIFY(!view.uniformRowHeights());
    QCOMPARE(view.visualRect(QModelIndex()), QRect());
    QVERIFY(!view.wordWrap());
}

void tst_QTreeView::alternatingRowColors()
{
    QTreeView view;
    QVERIFY(!view.alternatingRowColors());
    view.setAlternatingRowColors(true);
    QVERIFY(view.alternatingRowColors());
    view.setAlternatingRowColors(false);
    QVERIFY(!view.alternatingRowColors());

    // ### Test visual effect.
}

void tst_QTreeView::currentIndex_data()
{
    QTest::addColumn<int>("row");
    QTest::addColumn<int>("column");
    QTest::addColumn<int>("indexRow");
    QTest::addColumn<int>("indexColumn");
    QTest::addColumn<int>("parentIndexRow");
    QTest::addColumn<int>("parentIndexColumn");

    QTest::newRow("-1, -1") << -1 << -1 << -1 << -1 << -1 << -1;
    QTest::newRow("-1, 0") << -1 << 0 << -1 << -1 << -1 << -1;
    QTest::newRow("0, -1") << 0 << -1 << -1 << -1 << -1 << -1;
    QTest::newRow("0, 0") << 0 << 0 << 0 << 0 << -1 << -1;
    QTest::newRow("0, 1") << 0 << 0 << 0 << 0 << -1 << -1;
    QTest::newRow("1, 0") << 1 << 0 << 1 << 0 << -1 << -1;
    QTest::newRow("1, 1") << 1 << 1 << -1 << -1 << -1 << -1;
    QTest::newRow("2, 0") << 2 << 0 << 2 << 0 << -1 << -1;
    QTest::newRow("2, 1") << 2 << 1 << -1 << -1 << -1 << -1;
    QTest::newRow("3, -1") << 3 << -1 << -1 << -1 << -1 << -1;
    QTest::newRow("3, 0") << 3 << 0 << -1 << -1 << -1 << -1;
    QTest::newRow("3, 1") << 3 << 1 << -1 << -1 << -1 << -1;
}

void tst_QTreeView::currentIndex()
{
    QFETCH(int, row);
    QFETCH(int, column);
    QFETCH(int, indexRow);
    QFETCH(int, indexColumn);
    QFETCH(int, parentIndexRow);
    QFETCH(int, parentIndexColumn);

    QTreeView view;
    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);

    QCOMPARE(view.currentIndex(), QModelIndex());
    view.setCurrentIndex(view.model()->index(row, column));
    QCOMPARE(view.currentIndex().row(), indexRow);
    QCOMPARE(view.currentIndex().column(), indexColumn);
    QCOMPARE(view.currentIndex().parent().row(), parentIndexRow);
    QCOMPARE(view.currentIndex().parent().column(), parentIndexColumn);

    // ### Test child and grandChild indexes.
}

#ifndef QT_NO_DRAGANDDROP

void tst_QTreeView::dragDropMode_data()
{
    QTest::addColumn<QAbstractItemView::DragDropMode>("dragDropMode");
    QTest::addColumn<bool>("acceptDrops");
    QTest::addColumn<bool>("dragEnabled");
    QTest::newRow("NoDragDrop") << QAbstractItemView::NoDragDrop << false << false;
    QTest::newRow("DragOnly") << QAbstractItemView::DragOnly << false << true;
    QTest::newRow("DropOnly") << QAbstractItemView::DropOnly << true << false;
    QTest::newRow("DragDrop") << QAbstractItemView::DragDrop << true << true;
    QTest::newRow("InternalMove") << QAbstractItemView::InternalMove << true << true;
}

void tst_QTreeView::dragDropMode()
{
    QFETCH(QAbstractItemView::DragDropMode, dragDropMode);
    QFETCH(bool, acceptDrops);
    QFETCH(bool, dragEnabled);

    QTreeView view;
    QCOMPARE(view.dragDropMode(), QAbstractItemView::NoDragDrop);
    QVERIFY(!view.acceptDrops());
    QVERIFY(!view.dragEnabled());

    view.setDragDropMode(dragDropMode);
    QCOMPARE(view.dragDropMode(), dragDropMode);
    QCOMPARE(view.acceptDrops(), acceptDrops);
    QCOMPARE(view.dragEnabled(), dragEnabled);

    // ### Test effects of this mode
}

void tst_QTreeView::dragDropModeFromDragEnabledAndAcceptDrops_data()
{
    QTest::addColumn<bool>("dragEnabled");
    QTest::addColumn<bool>("acceptDrops");
    QTest::addColumn<QAbstractItemView::DragDropMode>("dragDropMode");
    QTest::addColumn<QAbstractItemView::DragDropMode>("setBehavior");

    QTest::newRow("NoDragDrop -1") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::DragDropMode(-1);
    QTest::newRow("NoDragDrop 0") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::NoDragDrop;
    QTest::newRow("NoDragDrop 1") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::DragOnly;
    QTest::newRow("NoDragDrop 2") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::DropOnly;
    QTest::newRow("NoDragDrop 3") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::DragDrop;
    QTest::newRow("NoDragDrop 4") << false << false << QAbstractItemView::NoDragDrop << QAbstractItemView::InternalMove;
    QTest::newRow("DragOnly -1") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::DragDropMode(-1);
    QTest::newRow("DragOnly 0") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::NoDragDrop;
    QTest::newRow("DragOnly 1") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::DragOnly;
    QTest::newRow("DragOnly 2") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::DropOnly;
    QTest::newRow("DragOnly 3") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::DragDrop;
    QTest::newRow("DragOnly 4") << true << false << QAbstractItemView::DragOnly << QAbstractItemView::InternalMove;
    QTest::newRow("DropOnly -1") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::DragDropMode(-1);
    QTest::newRow("DropOnly 0") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::NoDragDrop;
    QTest::newRow("DropOnly 1") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::DragOnly;
    QTest::newRow("DropOnly 2") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::DropOnly;
    QTest::newRow("DropOnly 3") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::DragDrop;
    QTest::newRow("DropOnly 4") << false << true << QAbstractItemView::DropOnly << QAbstractItemView::InternalMove;
    QTest::newRow("DragDrop -1") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::DragDropMode(-1);
    QTest::newRow("DragDrop 0") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::DragDropMode(-1);
    QTest::newRow("DragDrop 1") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::NoDragDrop;
    QTest::newRow("DragDrop 2") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::DragOnly;
    QTest::newRow("DragDrop 3") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::DropOnly;
    QTest::newRow("DragDrop 4") << true << true << QAbstractItemView::DragDrop << QAbstractItemView::DragDrop;
    QTest::newRow("DragDrop 5") << true << true << QAbstractItemView::InternalMove << QAbstractItemView::InternalMove;
}

void tst_QTreeView::dragDropModeFromDragEnabledAndAcceptDrops()
{
    QFETCH(bool, acceptDrops);
    QFETCH(bool, dragEnabled);
    QFETCH(QAbstractItemView::DragDropMode, dragDropMode);
    QFETCH(QAbstractItemView::DragDropMode, setBehavior);

    QTreeView view;
    QCOMPARE(view.dragDropMode(), QAbstractItemView::NoDragDrop);

    if (setBehavior != QAbstractItemView::DragDropMode(-1))
        view.setDragDropMode(setBehavior);

    view.setAcceptDrops(acceptDrops);
    view.setDragEnabled(dragEnabled);
    QCOMPARE(view.dragDropMode(), dragDropMode);

    // ### Test effects of this mode
}

void tst_QTreeView::dragDropOverwriteMode()
{
    QTreeView view;
    QVERIFY(!view.dragDropOverwriteMode());
    view.setDragDropOverwriteMode(true);
    QVERIFY(view.dragDropOverwriteMode());
    view.setDragDropOverwriteMode(false);
    QVERIFY(!view.dragDropOverwriteMode());

    // ### This property changes the behavior of dropIndicatorPosition(),
    // which is protected and called only from within QListWidget and
    // QTableWidget, from their reimplementations of dropMimeData(). Hard to
    // test.
}
#endif

void tst_QTreeView::editTriggers_data()
{
    QTest::addColumn<QAbstractItemView::EditTriggers>("editTriggers");
    QTest::addColumn<QAbstractItemView::EditTrigger>("triggeredTrigger");
    QTest::addColumn<bool>("editorOpened");

    // NoEditTriggers
    QTest::newRow("NoEditTriggers 0") << QAbstractItemView::EditTriggers(QAbstractItemView::NoEditTriggers)
                                      << QAbstractItemView::NoEditTriggers << false;
    QTest::newRow("NoEditTriggers 1") << QAbstractItemView::EditTriggers(QAbstractItemView::NoEditTriggers)
                                      << QAbstractItemView::CurrentChanged << false;
    QTest::newRow("NoEditTriggers 2") << QAbstractItemView::EditTriggers(QAbstractItemView::NoEditTriggers)
                                      << QAbstractItemView::DoubleClicked << false;
    QTest::newRow("NoEditTriggers 3") << QAbstractItemView::EditTriggers(QAbstractItemView::NoEditTriggers)
                                      << QAbstractItemView::SelectedClicked << false;
    QTest::newRow("NoEditTriggers 4") << QAbstractItemView::EditTriggers(QAbstractItemView::NoEditTriggers)
                                      << QAbstractItemView::EditKeyPressed << false;

    // CurrentChanged
    QTest::newRow("CurrentChanged 0") << QAbstractItemView::EditTriggers(QAbstractItemView::CurrentChanged)
                                      << QAbstractItemView::NoEditTriggers << false;
    QTest::newRow("CurrentChanged 1") << QAbstractItemView::EditTriggers(QAbstractItemView::CurrentChanged)
                                      << QAbstractItemView::CurrentChanged << true;
    QTest::newRow("CurrentChanged 2") << QAbstractItemView::EditTriggers(QAbstractItemView::CurrentChanged)
                                      << QAbstractItemView::DoubleClicked << false;
    QTest::newRow("CurrentChanged 3") << QAbstractItemView::EditTriggers(QAbstractItemView::CurrentChanged)
                                      << QAbstractItemView::SelectedClicked << false;
    QTest::newRow("CurrentChanged 4") << QAbstractItemView::EditTriggers(QAbstractItemView::CurrentChanged)
                                      << QAbstractItemView::EditKeyPressed << false;

    // DoubleClicked
    QTest::newRow("DoubleClicked 0") << QAbstractItemView::EditTriggers(QAbstractItemView::DoubleClicked)
                                     << QAbstractItemView::NoEditTriggers << false;
    QTest::newRow("DoubleClicked 1") << QAbstractItemView::EditTriggers(QAbstractItemView::DoubleClicked)
                                     << QAbstractItemView::CurrentChanged << false;
    QTest::newRow("DoubleClicked 2") << QAbstractItemView::EditTriggers(QAbstractItemView::DoubleClicked)
                                     << QAbstractItemView::DoubleClicked << true;
    QTest::newRow("DoubleClicked 3") << QAbstractItemView::EditTriggers(QAbstractItemView::DoubleClicked)
                                     << QAbstractItemView::SelectedClicked << false;
    QTest::newRow("DoubleClicked 4") << QAbstractItemView::EditTriggers(QAbstractItemView::DoubleClicked)
                                     << QAbstractItemView::EditKeyPressed << false;

    // SelectedClicked
    QTest::newRow("SelectedClicked 0") << QAbstractItemView::EditTriggers(QAbstractItemView::SelectedClicked)
                                       << QAbstractItemView::NoEditTriggers << false;
    QTest::newRow("SelectedClicked 1") << QAbstractItemView::EditTriggers(QAbstractItemView::SelectedClicked)
                                       << QAbstractItemView::CurrentChanged << false;
    QTest::newRow("SelectedClicked 2") << QAbstractItemView::EditTriggers(QAbstractItemView::SelectedClicked)
                                       << QAbstractItemView::DoubleClicked << false;
    QTest::newRow("SelectedClicked 3") << QAbstractItemView::EditTriggers(QAbstractItemView::SelectedClicked)
                                       << QAbstractItemView::SelectedClicked << true;
    QTest::newRow("SelectedClicked 4") << QAbstractItemView::EditTriggers(QAbstractItemView::SelectedClicked)
                                       << QAbstractItemView::EditKeyPressed << false;

    // EditKeyPressed
    QTest::newRow("EditKeyPressed 0") << QAbstractItemView::EditTriggers(QAbstractItemView::EditKeyPressed)
                                      << QAbstractItemView::NoEditTriggers << false;
    QTest::newRow("EditKeyPressed 1") << QAbstractItemView::EditTriggers(QAbstractItemView::EditKeyPressed)
                                      << QAbstractItemView::CurrentChanged << false;
    QTest::newRow("EditKeyPressed 2") << QAbstractItemView::EditTriggers(QAbstractItemView::EditKeyPressed)
                                      << QAbstractItemView::DoubleClicked << false;
    QTest::newRow("EditKeyPressed 3") << QAbstractItemView::EditTriggers(QAbstractItemView::EditKeyPressed)
                                      << QAbstractItemView::SelectedClicked << false;
    QTest::newRow("EditKeyPressed 4") << QAbstractItemView::EditTriggers(QAbstractItemView::EditKeyPressed)
                                      << QAbstractItemView::EditKeyPressed << true;
}

void tst_QTreeView::editTriggers()
{
    QFETCH(QAbstractItemView::EditTriggers, editTriggers);
    QFETCH(QAbstractItemView::EditTrigger, triggeredTrigger);
    QFETCH(bool, editorOpened);

    QTreeView view;
    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);
    view.show();

    QCOMPARE(view.editTriggers(), QAbstractItemView::EditKeyPressed | QAbstractItemView::DoubleClicked);

    // Initialize the first index
    view.setCurrentIndex(view.model()->index(0, 0));

    // Verify that we don't have any editor initially
    QVERIFY(!qFindChild<QLineEdit *>(&view, QString()));

    // Set the triggers
    view.setEditTriggers(editTriggers);

    // Interact with the view
    switch (triggeredTrigger) {
    case QAbstractItemView::NoEditTriggers:
        // Do nothing, the editor shouldn't be there
        break;
    case QAbstractItemView::CurrentChanged:
        // Change the index to open an editor
        view.setCurrentIndex(view.model()->index(1, 0));
        break;
    case QAbstractItemView::DoubleClicked:
        // Doubleclick the center of the current cell
        QTest::mouseClick(view.viewport(), Qt::LeftButton, 0,
                          view.visualRect(view.model()->index(0, 0)).center());
        QTest::mouseDClick(view.viewport(), Qt::LeftButton, 0,
                           view.visualRect(view.model()->index(0, 0)).center());
        break;
    case QAbstractItemView::SelectedClicked:
        // Click the center of the current cell
        view.selectionModel()->select(view.model()->index(0, 0), QItemSelectionModel::Select);
        QTest::mouseClick(view.viewport(), Qt::LeftButton, 0,
                          view.visualRect(view.model()->index(0, 0)).center());
        QTest::qWait(int(QApplication::doubleClickInterval() * 1.5));
        break;
    case QAbstractItemView::EditKeyPressed:
        view.setFocus();
#ifdef Q_OS_MAC
        // Mac OS X uses Enter for editing
        QTest::keyPress(&view, Qt::Key_Enter);
#else
        // All other platforms use F2
        QTest::keyPress(&view, Qt::Key_F2);
#endif
        break;
    default:
        break;
    }

    // Check if we got an editor
    QTRY_COMPARE(qFindChild<QLineEdit *>(&view, QString()) != 0, editorOpened);
}

void tst_QTreeView::hasAutoScroll()
{
    QTreeView view;
    QVERIFY(view.hasAutoScroll());
    view.setAutoScroll(false);
    QVERIFY(!view.hasAutoScroll());
    view.setAutoScroll(true);
    QVERIFY(view.hasAutoScroll());
}

void tst_QTreeView::horizontalScrollMode()
{
    QStandardItemModel model;
    for (int i = 0; i < 100; ++i) {
        model.appendRow(QList<QStandardItem *>()
                        << new QStandardItem("An item that has very long text and should"
                                             " cause the horizontal scroll bar to appear.")
                        << new QStandardItem("An item that has very long text and should"
                                             " cause the horizontal scroll bar to appear."));
    }

    QTreeView view;
    view.setModel(&model);
    view.setFixedSize(100, 100);
    view.header()->resizeSection(0, 200);
    view.show();

    QCOMPARE(view.horizontalScrollMode(), QAbstractItemView::ScrollPerPixel);
    QCOMPARE(view.horizontalScrollBar()->minimum(), 0);
    QVERIFY(view.horizontalScrollBar()->maximum() > 2);

    view.setHorizontalScrollMode(QAbstractItemView::ScrollPerItem);
    QCOMPARE(view.horizontalScrollMode(), QAbstractItemView::ScrollPerItem);
    QCOMPARE(view.horizontalScrollBar()->minimum(), 0);
    QCOMPARE(view.horizontalScrollBar()->maximum(), 1);

    view.setHorizontalScrollMode(QAbstractItemView::ScrollPerPixel);
    QCOMPARE(view.horizontalScrollMode(), QAbstractItemView::ScrollPerPixel);
    QCOMPARE(view.horizontalScrollBar()->minimum(), 0);
    QVERIFY(view.horizontalScrollBar()->maximum() > 2);
}

class RepaintTreeView : public QTreeView
{
public:
    RepaintTreeView() : repainted(false) { }
    bool repainted;

protected:
    void paintEvent(QPaintEvent *event)
    { repainted = true; QTreeView::paintEvent(event); }
};

void tst_QTreeView::iconSize()
{
    RepaintTreeView view;
    QCOMPARE(view.iconSize(), QSize());

    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);
    QCOMPARE(view.iconSize(), QSize());
    QVERIFY(!view.repainted);

    view.show();
    view.update();
    QTest::qWait(100);
    QTRY_VERIFY(view.repainted);
    QCOMPARE(view.iconSize(), QSize());

    view.repainted = false;
    view.setIconSize(QSize());
    QTRY_VERIFY(!view.repainted);
    QCOMPARE(view.iconSize(), QSize());

    view.setIconSize(QSize(10, 10));
    QTRY_VERIFY(view.repainted);
    QCOMPARE(view.iconSize(), QSize(10, 10));

    view.repainted = false;
    view.setIconSize(QSize(10000, 10000));
    QTRY_VERIFY(view.repainted);
    QCOMPARE(view.iconSize(), QSize(10000, 10000));
}

void tst_QTreeView::indexAt()
{
    QtTestModel model;
    model.rows = model.cols = 5;

    QTreeView view;
    QCOMPARE(view.indexAt(QPoint()), QModelIndex());
    view.setModel(&model);
    QVERIFY(view.indexAt(QPoint()) != QModelIndex());

    QSize itemSize = view.visualRect(model.index(0, 0)).size();
    for (int i = 0; i < model.rowCount(); ++i) {
        QPoint pos(itemSize.width() / 2, (i * itemSize.height()) + (itemSize.height() / 2));
        QModelIndex index = view.indexAt(pos);
        QCOMPARE(index, model.index(i, 0));
    }

    /*
      // ### this is wrong; the widget _will_ affect the item size
    for (int j = 0; j < model.rowCount(); ++j)
        view.setIndexWidget(model.index(j, 0), new QPushButton);
    */

    for (int k = 0; k < model.rowCount(); ++k) {
        QPoint pos(itemSize.width() / 2, (k * itemSize.height()) + (itemSize.height() / 2));
        QModelIndex index = view.indexAt(pos);
        QCOMPARE(index, model.index(k, 0));
    }

    view.show();
    view.resize(600, 600);
    view.header()->setStretchLastSection(false);
    QCOMPARE(view.indexAt(QPoint(550, 20)), QModelIndex());
}

void tst_QTreeView::indexWidget()
{
    QTreeView view;
    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);

    QModelIndex index = view.model()->index(0, 0);

    QVERIFY(!view.indexWidget(QModelIndex()));
    QVERIFY(!view.indexWidget(index));

    QString text = QLatin1String("TestLabel");

    QWidget *label = new QLabel(text);
    view.setIndexWidget(QModelIndex(), label);
    QVERIFY(!view.indexWidget(QModelIndex()));
    QVERIFY(!label->parent());
    view.setIndexWidget(index, label);
    QCOMPARE(view.indexWidget(index), label);
    QCOMPARE(label->parentWidget(), view.viewport());


    QTextEdit *widget = new QTextEdit(text);
    widget->setFixedSize(200,100);
    view.setIndexWidget(index, widget);
    QCOMPARE(view.indexWidget(index), static_cast<QWidget *>(widget));

    QCOMPARE(widget->parentWidget(), view.viewport());
    QCOMPARE(widget->geometry(), view.visualRect(index).intersected(widget->geometry()));
    QCOMPARE(widget->toPlainText(), text);

    //now let's try to do that later when the widget is already shown
    view.show();
    index = view.model()->index(1, 0);
    QVERIFY(!view.indexWidget(index));

    widget = new QTextEdit(text);
    widget->setFixedSize(200,100);
    view.setIndexWidget(index, widget);
    QCOMPARE(view.indexWidget(index), static_cast<QWidget *>(widget));

    QCOMPARE(widget->parentWidget(), view.viewport());
    QCOMPARE(widget->geometry(), view.visualRect(index).intersect(widget->geometry()));
    QCOMPARE(widget->toPlainText(), text);
}

void tst_QTreeView::itemDelegate()
{
    QPointer<QAbstractItemDelegate> oldDelegate;
    QPointer<QItemDelegate> otherItemDelegate;

    {
        QTreeView view;
        QVERIFY(qobject_cast<QStyledItemDelegate *>(view.itemDelegate()));
        QPointer<QAbstractItemDelegate> oldDelegate = view.itemDelegate();

        otherItemDelegate = new QItemDelegate;
        view.setItemDelegate(otherItemDelegate);
        QVERIFY(!otherItemDelegate->parent());
        QVERIFY(oldDelegate);

        QCOMPARE(view.itemDelegate(), (QAbstractItemDelegate *)otherItemDelegate);

        view.setItemDelegate(0);
        QVERIFY(!view.itemDelegate()); // <- view does its own drawing?
        QVERIFY(otherItemDelegate);
    }

    // This is strange. Why doesn't setItemDelegate() reparent the delegate?
    QVERIFY(!oldDelegate);
    QVERIFY(otherItemDelegate);

    delete otherItemDelegate;
}

void tst_QTreeView::itemDelegateForColumnOrRow()
{
    QTreeView view;
    QAbstractItemDelegate *defaultDelegate = view.itemDelegate();
    QVERIFY(defaultDelegate);

    QVERIFY(!view.itemDelegateForRow(0));
    QVERIFY(!view.itemDelegateForColumn(0));
    QCOMPARE(view.itemDelegate(QModelIndex()), defaultDelegate);

    QStandardItemModel model;
    for (int i = 0; i < 100; ++i) {
        model.appendRow(QList<QStandardItem *>()
                        << new QStandardItem("An item that has very long text and should"
                                             " cause the horizontal scroll bar to appear.")
                        << new QStandardItem("An item that has very long text and should"
                                             " cause the horizontal scroll bar to appear.")
                        << new QStandardItem("An item that has very long text and should"
                                             " cause the horizontal scroll bar to appear."));
    }
    view.setModel(&model);

    QVERIFY(!view.itemDelegateForRow(0));
    QVERIFY(!view.itemDelegateForColumn(0));
    QCOMPARE(view.itemDelegate(QModelIndex()), defaultDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(0, 0)), defaultDelegate);

    QPointer<QAbstractItemDelegate> rowDelegate = new QItemDelegate;
    view.setItemDelegateForRow(0, rowDelegate);
    QVERIFY(!rowDelegate->parent());
    QCOMPARE(view.itemDelegateForRow(0), (QAbstractItemDelegate *)rowDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(0, 0)), (QAbstractItemDelegate *)rowDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(0, 1)), (QAbstractItemDelegate *)rowDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(1, 0)), defaultDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(1, 1)), defaultDelegate);

    QPointer<QAbstractItemDelegate> columnDelegate = new QItemDelegate;
    view.setItemDelegateForColumn(1, columnDelegate);
    QVERIFY(!columnDelegate->parent());
    QCOMPARE(view.itemDelegateForColumn(1), (QAbstractItemDelegate *)columnDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(0, 0)), (QAbstractItemDelegate *)rowDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(0, 1)), (QAbstractItemDelegate *)rowDelegate); // row wins
    QCOMPARE(view.itemDelegate(view.model()->index(1, 0)), defaultDelegate);
    QCOMPARE(view.itemDelegate(view.model()->index(1, 1)), (QAbstractItemDelegate *)columnDelegate);

    view.setItemDelegateForRow(0, 0);
    QVERIFY(!view.itemDelegateForRow(0));
    QVERIFY(rowDelegate); // <- wasn't deleted

    view.setItemDelegateForColumn(1, 0);
    QVERIFY(!view.itemDelegateForColumn(1));
    QVERIFY(columnDelegate); // <- wasn't deleted

    delete rowDelegate;
    delete columnDelegate;
}

void tst_QTreeView::keyboardSearch()
{
    QTreeView view;
    QStandardItemModel model;
    model.appendRow(new QStandardItem("Andreas"));
    model.appendRow(new QStandardItem("Baldrian"));
    model.appendRow(new QStandardItem("Cecilie"));
    view.setModel(&model);
    view.show();

    // Nothing is selected
    QVERIFY(!view.selectionModel()->hasSelection());
    QVERIFY(!view.selectionModel()->isSelected(model.index(0, 0)));

    // First item is selected
    view.keyboardSearch(QLatin1String("A"));
    QTRY_VERIFY(view.selectionModel()->isSelected(model.index(0, 0)));

    // First item is still selected
    view.keyboardSearch(QLatin1String("n"));
    QVERIFY(view.selectionModel()->isSelected(model.index(0, 0)));

    // No "AnB" item - keep the same selection.
    view.keyboardSearch(QLatin1String("B"));
    QVERIFY(view.selectionModel()->isSelected(model.index(0, 0)));

    // Wait a bit.
    QTest::qWait(QApplication::keyboardInputInterval() * 2);

    // The item that starts with B is selected.
    view.keyboardSearch(QLatin1String("B"));
    QVERIFY(view.selectionModel()->isSelected(model.index(1, 0)));
}

void tst_QTreeView::setModel()
{
    QTreeView view;
    view.show();
    QCOMPARE(view.model(), (QAbstractItemModel*)0);
    QCOMPARE(view.selectionModel(), (QItemSelectionModel*)0);
    QCOMPARE(view.header()->model(), (QAbstractItemModel*)0);
    QCOMPARE(view.header()->selectionModel(), (QItemSelectionModel*)0);

    for (int x = 0; x < 2; ++x) {
        QtTestModel *model = new QtTestModel(10, 8);
        QAbstractItemModel *oldModel = view.model();
        QSignalSpy modelDestroyedSpy(oldModel ? oldModel : model, SIGNAL(destroyed()));
        // set the same model twice
        for (int i = 0; i < 2; ++i) {
            QItemSelectionModel *oldSelectionModel = view.selectionModel();
            QItemSelectionModel *dummy = new QItemSelectionModel(model);
            QSignalSpy selectionModelDestroyedSpy(
                oldSelectionModel ? oldSelectionModel : dummy, SIGNAL(destroyed()));
            view.setModel(model);
//                QCOMPARE(selectionModelDestroyedSpy.count(), (x == 0 || i == 1) ? 0 : 1);
            QCOMPARE(view.model(), (QAbstractItemModel *)model);
            QCOMPARE(view.header()->model(), (QAbstractItemModel *)model);
            QCOMPARE(view.selectionModel() != oldSelectionModel, (i == 0));
        }
        QTRY_COMPARE(modelDestroyedSpy.count(), 0);

        view.setModel(0);
        QCOMPARE(view.model(), (QAbstractItemModel*)0);
        // ### shouldn't selectionModel also be 0 now?
//        QCOMPARE(view.selectionModel(), (QItemSelectionModel*)0);
        delete model;
    }
}

void tst_QTreeView::openPersistentEditor()
{
    QTreeView view;
    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);
    view.show();

    QVERIFY(!qFindChild<QLineEdit *>(view.viewport()));
    view.openPersistentEditor(view.model()->index(0, 0));
    QVERIFY(qFindChild<QLineEdit *>(view.viewport()));

    view.closePersistentEditor(view.model()->index(0, 0));
    QVERIFY(!qFindChild<QLineEdit *>(view.viewport())->isVisible());

    qApp->sendPostedEvents(0, QEvent::DeferredDelete);
    QVERIFY(!qFindChild<QLineEdit *>(view.viewport()));
}

void tst_QTreeView::rootIndex()
{
    QTreeView view;
    QCOMPARE(view.rootIndex(), QModelIndex());
    QStandardItemModel treeModel;
    initStandardTreeModel(&treeModel);
    view.setModel(&treeModel);
    QCOMPARE(view.rootIndex(), QModelIndex());

    view.setRootIndex(view.model()->index(1, 0));

    QCOMPARE(view.model()->data(view.model()->index(0, view.header()->visualIndex(0), view.rootIndex()), Qt::DisplayRole)
             .toString(), QString("Row 2 Child Item"));
}

void tst_QTreeView::setHeader()
{
    QTreeView view;
    QVERIFY(view.header() != 0);
    QCOMPARE(view.header()->orientation(), Qt::Horizontal);
    QCOMPARE(view.header()->parent(), (QObject *)&view);
    for (int x = 0; x < 2; ++x) {
        QSignalSpy destroyedSpy(view.header(), SIGNAL(destroyed()));
        Qt::Orientation orient = x ? Qt::Vertical : Qt::Horizontal;
        QHeaderView *head = new QHeaderView(orient);
        view.setHeader(head);
        QCOMPARE(destroyedSpy.count(), 1);
        QCOMPARE(head->parent(), (QObject *)&view);
        QCOMPARE(view.header(), head);
        view.setHeader(head);
        QCOMPARE(view.header(), head);
        // Itemviews in Qt < 4.2 have asserts for this. Qt >= 4.2 should handle this gracefully
        view.setHeader((QHeaderView *)0);
        QCOMPARE(view.header(), head);
    }
}

void tst_QTreeView::columnHidden()
{
    QTreeView view;
    QtTestModel model(10, 8);
    view.setModel(&model);
    view.show();
    for (int c = 0; c < model.columnCount(); ++c)
        QCOMPARE(view.isColumnHidden(c), false);
    // hide even columns
    for (int c = 0; c < model.columnCount(); c+=2)
        view.setColumnHidden(c, true);
    for (int c = 0; c < model.columnCount(); ++c)
        QCOMPARE(view.isColumnHidden(c), (c & 1) == 0);
    view.update();
    // hide odd columns too
    for (int c = 1; c < model.columnCount(); c+=2)
        view.setColumnHidden(c, true);
    for (int c = 0; c < model.columnCount(); ++c)
        QCOMPARE(view.isColumnHidden(c), true);
    view.update();
}

void tst_QTreeView::rowHidden()
{
    QtTestModel model(4, 6);
    model.levels = 3;
    QTreeView view;
    view.resize(500,500);
    view.setModel(&model);
    view.show();

    QCOMPARE(view.isRowHidden(-1, QModelIndex()), false);
    QCOMPARE(view.isRowHidden(999999, QModelIndex()), false);
    view.setRowHidden(-1, QModelIndex(), true);
    view.setRowHidden(999999, QModelIndex(), true);
    QCOMPARE(view.isRowHidden(-1, QModelIndex()), false);
    QCOMPARE(view.isRowHidden(999999, QModelIndex()), false);

    view.setRowHidden(0, QModelIndex(), true);
    QCOMPARE(view.isRowHidden(0, QModelIndex()), true);
    view.setRowHidden(0, QModelIndex(), false);
    QCOMPARE(view.isRowHidden(0, QModelIndex()), false);

    QStack<QModelIndex> parents;
    parents.push(QModelIndex());
    while (!parents.isEmpty()) {
        QModelIndex p = parents.pop();
        if (model.canFetchMore(p))
            model.fetchMore(p);
        int rows = model.rowCount(p);
        // hide all
        for (int r = 0; r < rows; ++r) {
            view.setRowHidden(r, p, true);
            QCOMPARE(view.isRowHidden(r, p), true);
        }
        // hide none
        for (int r = 0; r < rows; ++r) {
            view.setRowHidden(r, p, false);
            QCOMPARE(view.isRowHidden(r, p), false);
        }
        // hide only even rows
        for (int r = 0; r < rows; ++r) {
            bool hide = (r & 1) == 0;
            view.setRowHidden(r, p, hide);
            QCOMPARE(view.isRowHidden(r, p), hide);
        }
        for (int r = 0; r < rows; ++r)
            parents.push(model.index(r, 0, p));
    }

    parents.push(QModelIndex());
    while (!parents.isEmpty()) {
        QModelIndex p = parents.pop();
        // all even rows should still be hidden
        for (int r = 0; r < model.rowCount(p); ++r)
            QCOMPARE(view.isRowHidden(r, p), (r & 1) == 0);
        if (model.rowCount(p) > 0) {
            for (int r = 0; r < model.rowCount(p); ++r)
                parents.push(model.index(r, 0, p));
        }
    }
}

void tst_QTreeView::noDelegate()
{
    QtTestModel model(10, 7);
    QTreeView view;
    view.setModel(&model);
    view.setItemDelegate(0);
    QCOMPARE(view.itemDelegate(), (QAbstractItemDelegate *)0);
}

void tst_QTreeView::noModel()
{
    QTreeView view;
    view.show();
    view.setRowHidden(0, QModelIndex(), true);
}

void tst_QTreeView::emptyModel()
{
    QtTestModel model;
    QTreeView view;
    view.setModel(&model);
    view.show();
    QVERIFY(!model.wrongIndex);
}

void tst_QTreeView::removeRows()
{
    QtTestModel model(7, 10);

    QTreeView view;

    view.setModel(&model);
    view.show();

    model.removeLastRow();
    QVERIFY(!model.wrongIndex);

    model.removeAllRows();
    QVERIFY(!model.wrongIndex);
}

void tst_QTreeView::removeCols()
{
    QtTestModel model(5, 8);

    QTreeView view;
    view.setModel(&model);
    view.show();
    model.fetched = true;
    model.removeLastColumn();
    QVERIFY(!model.wrongIndex);
    QCOMPARE(view.header()->count(), model.cols);

    model.removeAllColumns();
    QVERIFY(!model.wrongIndex);
    QCOMPARE(view.header()->count(), model.cols);
}

void tst_QTreeView::expandAndCollapse_data()
{
    QTest::addColumn<bool>("animationEnabled");
    QTest::newRow("normal") << false;
    QTest::newRow("animated") << true;

}

void tst_QTreeView::expandAndCollapse()
{
    QFETCH(bool, animationEnabled);

    QtTestModel model(10, 9);

    QTreeView view;
    view.setUniformRowHeights(true);
    view.setModel(&model);
    view.setAnimated(animationEnabled);
    view.show();

    QModelIndex a = model.index(0, 0, QModelIndex());
    QModelIndex b = model.index(0, 0, a);

    QSignalSpy expandedSpy(&view, SIGNAL(expanded(const QModelIndex&)));
    QSignalSpy collapsedSpy(&view, SIGNAL(collapsed(const QModelIndex&)));
    QVariantList args;

    for (int y = 0; y < 2; ++y) {
        view.setVisible(y == 0);
        for (int x = 0; x < 2; ++x) {
            view.setItemsExpandable(x == 0);

            // Test bad args
            view.expand(QModelIndex());
            QCOMPARE(view.isExpanded(QModelIndex()), false);
            view.collapse(QModelIndex());
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 0);

            // expand a first level item
            QVERIFY(!view.isExpanded(a));
            view.expand(a);
            QVERIFY(view.isExpanded(a));
            QCOMPARE(expandedSpy.count(), 1);
            QCOMPARE(collapsedSpy.count(), 0);
            args = expandedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);

            view.expand(a);
            QVERIFY(view.isExpanded(a));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 0);

            // expand a second level item
            QVERIFY(!view.isExpanded(b));
            view.expand(b);
            QVERIFY(view.isExpanded(a));
            QVERIFY(view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 1);
            QCOMPARE(collapsedSpy.count(), 0);
            args = expandedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), b);

            view.expand(b);
            QVERIFY(view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 0);

            // collapse the first level item
            view.collapse(a);
            QVERIFY(!view.isExpanded(a));
            QVERIFY(view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 1);
            args = collapsedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);

            view.collapse(a);
            QVERIFY(!view.isExpanded(a));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 0);

            // expand the first level item again
            view.expand(a);
            QVERIFY(view.isExpanded(a));
            QVERIFY(view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 1);
            QCOMPARE(collapsedSpy.count(), 0);
            args = expandedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);

            // collapse the second level item
            view.collapse(b);
            QVERIFY(view.isExpanded(a));
            QVERIFY(!view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 1);
            args = collapsedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), b);

            // collapse the first level item
            view.collapse(a);
            QVERIFY(!view.isExpanded(a));
            QVERIFY(!view.isExpanded(b));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 1);
            args = collapsedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);

            // expand and remove row
            QPersistentModelIndex c = model.index(9, 0, b);
            view.expand(a);
            view.expand(b);
            model.removeLastRow(); // remove c
            QVERIFY(view.isExpanded(a));
            QVERIFY(view.isExpanded(b));
            QVERIFY(!view.isExpanded(c));
            QCOMPARE(expandedSpy.count(), 2);
            QCOMPARE(collapsedSpy.count(), 0);
            args = expandedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);
            args = expandedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), b);

            view.collapse(a);
            view.collapse(b);
            QVERIFY(!view.isExpanded(a));
            QVERIFY(!view.isExpanded(b));
            QVERIFY(!view.isExpanded(c));
            QCOMPARE(expandedSpy.count(), 0);
            QCOMPARE(collapsedSpy.count(), 2);
            args = collapsedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), a);
            args = collapsedSpy.takeFirst();
            QCOMPARE(qvariant_cast<QModelIndex>(args.at(0)), b);
        }
    }
}

void tst_QTreeView::expandAndCollapseAll()
{
    QtTestModel model(3, 2);
    model.levels = 2;
    QTreeView view;
    view.setUniformRowHeights(true);
    view.setModel(&model);

    QSignalSpy expandedSpy(&view, SIGNAL(expanded(const QModelIndex&)));
    QSignalSpy collapsedSpy(&view, SIGNAL(collapsed(const QModelIndex&)));

    view.expandAll();
    view.show();

    QCOMPARE(collapsedSpy.count(), 0);

    QStack<QModelIndex> parents;
    parents.push(QModelIndex());
    int count = 0;
    while (!parents.isEmpty()) {
        QModelIndex p = parents.pop();
        int rows = model.rowCount(p);
        for (int r = 0; r < rows; ++r)
            QVERIFY(view.isExpanded(model.index(r, 0, p)));
        count += rows;
        for (int r = 0; r < rows; ++r)
            parents.push(model.index(r, 0, p));
    }
// ### why is expanded() signal not emitted?
//    QCOMPARE(expandedSpy.count(), count);

    view.collapseAll();

    QCOMPARE(expandedSpy.count(), 0);

    parents.push(QModelIndex());
    count = 0;
    while (!parents.isEmpty()) {
        QModelIndex p = parents.pop();
        int rows = model.rowCount(p);
        for (int r = 0; r < rows; ++r)
            QVERIFY(!view.isExpanded(model.index(r, 0, p)));
        count += rows;
        for (int r = 0; r < rows; ++r)
            parents.push(model.index(r, 0, p));
    }
// ### why is collapsed() signal not emitted?
//    QCOMPARE(collapsedSpy.count(), count);
}

void tst_QTreeView::keyboardNavigation()
{
    const int rows = 10;
    const int columns = 7;

    QtTestModel model(rows, columns);

    QTreeView view;
    view.setModel(&model);
    view.show();

    QVector<Qt::Key> keymoves;
    keymoves << Qt::Key_Down << Qt::Key_Right << Qt::Key_Right << Qt::Key_Right
             << Qt::Key_Down << Qt::Key_Down << Qt::Key_Down << Qt::Key_Down
             << Qt::Key_Right << Qt::Key_Right << Qt::Key_Right
             << Qt::Key_Left << Qt::Key_Up << Qt::Key_Left << Qt::Key_Left
             << Qt::Key_Up << Qt::Key_Down << Qt::Key_Up << Qt::Key_Up
             << Qt::Key_Up << Qt::Key_Up << Qt::Key_Up << Qt::Key_Up
             << Qt::Key_Left << Qt::Key_Left << Qt::Key_Up << Qt::Key_Down;

    int row    = 0;
    int column = 0;
    QModelIndex index = model.index(row, column, QModelIndex());
    view.setCurrentIndex(index);
    QCOMPARE(view.currentIndex(), index);

    for (int i = 0; i < keymoves.size(); ++i) {
        Qt::Key key = keymoves.at(i);
        QTest::keyClick(&view, key);

        switch (key) {
        case Qt::Key_Up:
            if (row > 0) {
                index = index.sibling(row - 1, column);
                row -= 1;
            } else if (index.parent() != QModelIndex()) {
                index = index.parent();
                row = index.row();
            }
            break;
        case Qt::Key_Down:
            if (view.isExpanded(index)) {
                row = 0;
                index = index.child(row, column);
            } else {
                row = qMin(rows - 1, row + 1);
                index = index.sibling(row, column);
            }
            break;
        case Qt::Key_Left: {
            QScrollBar *b = view.horizontalScrollBar();
            if (b->value() == b->minimum())
                QVERIFY(!view.isExpanded(index));
            // windows style right will walk to the parent
            if (view.currentIndex() != index) {
                QCOMPARE(view.currentIndex(), index.parent());
                index = view.currentIndex();
                row = index.row();
                column = index.column();
            }
            break;
        }
        case Qt::Key_Right:
            QVERIFY(view.isExpanded(index));
            // windows style right will walk to the first child
            if (view.currentIndex() != index) {
                QCOMPARE(view.currentIndex().parent(), index);
                row = view.currentIndex().row();
                column = view.currentIndex().column();
                index = view.currentIndex();
            }
            break;
        default:
            QVERIFY(false);
        }

        QCOMPARE(view.currentIndex().row(), row);
        QCOMPARE(view.currentIndex().column(), column);
        QCOMPARE(view.currentIndex(), index);
    }
}

class Dmodel : public QtTestModel
{
public:
    Dmodel() : QtTestModel(10, 10){}

    int columnCount(const QModelIndex &parent) const
    {
        if (parent.row() == 5)
            return 1;
        return QtTestModel::columnCount(parent);
    }
};

void tst_QTreeView::headerSections()
{
    Dmodel model;

    QTreeView view;
    QHeaderView *header = view.header();

    view.setModel(&model);
    QModelIndex index = model.index(5, 0);
    view.setRootIndex(index);
    QCOMPARE(model.columnCount(QModelIndex()), 10);
    QCOMPARE(model.columnCount(index), 1);
    QCOMPARE(header->count(), model.columnCount(index));
}

void tst_QTreeView::moveCursor_data()
{
    QTest::addColumn<bool>("uniformRowHeights");
    QTest::addColumn<bool>("scrollPerPixel");
    QTest::newRow("uniformRowHeights = false, scrollPerPixel = false")
        << false << false;
    QTest::newRow("uniformRowHeights = true, scrollPerPixel = false")
        << true << false;
    QTest::newRow("uniformRowHeights = false, scrollPerPixel = true")
        << false << true;
    QTest::newRow("uniformRowHeights = true, scrollPerPixel = true")
        << true << true;
}

void tst_QTreeView::moveCursor()
{
    QFETCH(bool, uniformRowHeights);
    QFETCH(bool, scrollPerPixel);
    QtTestModel model(8, 6);

    PublicView view;
    view.setUniformRowHeights(uniformRowHeights);
    view.setModel(&model);
    view.setRowHidden(0, QModelIndex(), true);
    view.setVerticalScrollMode(scrollPerPixel ?
            QAbstractItemView::ScrollPerPixel :
            QAbstractItemView::ScrollPerItem);
    QVERIFY(view.isRowHidden(0, QModelIndex()));
    view.setColumnHidden(0, true);
    QVERIFY(view.isColumnHidden(0));
    view.show();
    qApp->setActiveWindow(&view);

    //here the first visible index should be selected
    //because the view got the focus
    QModelIndex expected = model.index(1, 1, QModelIndex());
    QCOMPARE(view.currentIndex(), expected);

    //then pressing down should go to the next line
    QModelIndex actual = view.moveCursor(PublicView::MoveDown, Qt::NoModifier);
    expected = model.index(2, 1, QModelIndex());
    QCOMPARE(actual, expected);

    view.setRowHidden(0, QModelIndex(), false);
    view.setColumnHidden(0, false);

    // PageUp was broken with uniform row heights turned on
    view.setCurrentIndex(model.index(1, 0));
    actual = view.moveCursor(PublicView::MovePageUp, Qt::NoModifier);
    expected = model.index(0, 0, QModelIndex());
    QCOMPARE(actual, expected);

    //let's try another column
    view.setCurrentIndex(model.index(1, 1));
    view.setSelectionBehavior(QAbstractItemView::SelectItems);
    QTest::keyClick(view.viewport(), Qt::Key_Up);
    expected = model.index(0, 1, QModelIndex());
    QCOMPARE(view.currentIndex(), expected);
    QTest::keyClick(view.viewport(), Qt::Key_Down);
    expected = model.index(1, 1, QModelIndex());
    QCOMPARE(view.currentIndex(), expected);
    QTest::keyClick(view.viewport(), Qt::Key_Up);
    expected = model.index(0, 1, QModelIndex());
    QCOMPARE(view.currentIndex(), expected);
    view.setColumnHidden(0, true);
    QTest::keyClick(view.viewport(), Qt::Key_Left);
    expected = model.index(0, 1, QModelIndex()); //it shouldn't have changed
    QCOMPARE(view.currentIndex(), expected);
    view.setColumnHidden(0, false);
    QTest::keyClick(view.viewport(), Qt::Key_Left);
    expected = model.index(0, 0, QModelIndex());
    QCOMPARE(view.currentIndex(), expected);
}

class TestDelegate : public QItemDelegate
{
public:
    TestDelegate(QObject *parent) : QItemDelegate(parent) {}
    QSize sizeHint(const QStyleOptionViewItem &, const QModelIndex &) const { return QSize(200, 50); }
};

typedef QList<QPoint> PointList;
Q_DECLARE_METATYPE(PointList)

void tst_QTreeView::setSelection_data()
{
    QTest::addColumn<QRect>("selectionRect");
    QTest::addColumn<int>("selectionMode");
    QTest::addColumn<int>("selectionCommand");
    QTest::addColumn<PointList>("expectedItems");
    QTest::addColumn<int>("verticalOffset");

    QTest::newRow("(0,0,50,20),rows") << QRect(0,0,50,20)
                                 << int(QAbstractItemView::SingleSelection)
                                 << int(QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows)
                                 << (PointList()
                                    << QPoint(0,0) << QPoint(1,0) << QPoint(2,0) << QPoint(3,0) << QPoint(4,0)
                                    )
                                 << 0;

    QTest::newRow("(0,0,50,90),rows") << QRect(0,0,50,90)
                                 << int(QAbstractItemView::ExtendedSelection)
                                 << int(QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows)
                                 << (PointList()
                                    << QPoint(0,0) << QPoint(1,0) << QPoint(2,0) << QPoint(3,0) << QPoint(4,0)
                                    << QPoint(0,1) << QPoint(1,1) << QPoint(2,1) << QPoint(3,1) << QPoint(4,1)
                                    )
                                 << 0;

    QTest::newRow("(50,0,0,90),rows,invalid rect") << QRect(QPoint(50, 0), QPoint(0, 90))
                                 << int(QAbstractItemView::ExtendedSelection)
                                 << int(QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows)
                                 << (PointList()
                                    << QPoint(0,0) << QPoint(1,0) << QPoint(2,0) << QPoint(3,0) << QPoint(4,0)
                                    << QPoint(0,1) << QPoint(1,1) << QPoint(2,1) << QPoint(3,1) << QPoint(4,1)
                                    )
                                 << 0;

    QTest::newRow("(0,-20,20,50),rows") << QRect(0,-20,20,50)
                                 << int(QAbstractItemView::ExtendedSelection)
                                 << int(QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows)
                                 << (PointList()
                                    << QPoint(0,0) << QPoint(1,0) << QPoint(2,0) << QPoint(3,0) << QPoint(4,0)
                                    << QPoint(0,1) << QPoint(1,1) << QPoint(2,1) << QPoint(3,1) << QPoint(4,1)
                                    )
                                 << 1;
    QTest::newRow("(0,-50,20,90),rows") << QRect(0,-50,20,90)
                                 << int(QAbstractItemView::ExtendedSelection)
                                 << int(QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows)
                                 << (PointList()
                                    << QPoint(0,0) << QPoint(1,0) << QPoint(2,0) << QPoint(3,0) << QPoint(4,0)
                                    << QPoint(0,1) << QPoint(1,1) << QPoint(2,1) << QPoint(3,1) << QPoint(4,1)
                                    )
                                 << 1;

}

void tst_QTreeView::setSelection()
{
    QFETCH(QRect, selectionRect);
    QFETCH(int, selectionMode);
    QFETCH(int, selectionCommand);
    QFETCH(PointList, expectedItems);
    QFETCH(int, verticalOffset);

    QtTestModel model(10, 5);
    model.levels = 1;
    model.setDecorationsEnabled(true);
    PublicView view;
    view.resize(400, 300);
    view.show();
    view.setRootIsDecorated(false);
    view.setItemDelegate(new TestDelegate(&view));
    view.setSelectionMode(QAbstractItemView::SelectionMode(selectionMode));
    view.setModel(&model);
    view.setUniformRowHeights(true);
    view.setVerticalScrollMode(QAbstractItemView::ScrollPerItem);
    view.scrollTo(model.index(verticalOffset, 0), QAbstractItemView::PositionAtTop);
    view.setSelection(selectionRect, QItemSelectionModel::SelectionFlags(selectionCommand));
    QItemSelectionModel *selectionModel = view.selectionModel();
    QVERIFY(selectionModel);

    QModelIndexList selectedIndexes = selectionModel->selectedIndexes();
    QCOMPARE(selectedIndexes.count(), expectedItems.count());
    for (int i = 0; i < selectedIndexes.count(); ++i) {
        QModelIndex idx = selectedIndexes.at(i);
        QVERIFY(expectedItems.contains(QPoint(idx.column(), idx.row())));
    }
}

void tst_QTreeView::indexAbove()
{
    QtTestModel model(6, 7);
    model.levels = 2;
    QTreeView view;

    QCOMPARE(view.indexAbove(QModelIndex()), QModelIndex());
    view.setModel(&model);
    QCOMPARE(view.indexAbove(QModelIndex()), QModelIndex());

    QStack<QModelIndex> parents;
    parents.push(QModelIndex());
    while (!parents.isEmpty()) {
        QModelIndex p = parents.pop();
        if (model.canFetchMore(p))
            model.fetchMore(p);
        int rows = model.rowCount(p);
        for (int r = rows - 1; r > 0; --r) {
            QModelIndex idx = model.index(r, 0, p);
            QModelIndex expected = model.index(r - 1, 0, p);
            QCOMPARE(view.indexAbove(idx), expected);
        }
        // hide even rows
        for (int r = 0; r < rows; r+=2)
            view.setRowHidden(r, p, true);
        for (int r = rows - 1; r > 0; r-=2) {
            QModelIndex idx = model.index(r, 0, p);
            QModelIndex expected = model.index(r - 2, 0, p);
            QCOMPARE(view.indexAbove(idx), expected);
        }
//        for (int r = 0; r < rows; ++r)
//            parents.push(model.index(r, 0, p));
    }
}

void tst_QTreeView::indexBelow()
{
    QtTestModel model(2, 1);

    QTreeView view;
    view.setModel(&model);
    view.show();

    QModelIndex i = model.index(0, 0, view.rootIndex());
    QVERIFY(i.isValid());
    QCOMPARE(i.row(), 0);

    i = view.indexBelow(i);
    QVERIFY(i.isValid());
    QCOMPARE(i.row(), 1);
    i = view.indexBelow(i);
    QVERIFY(!i.isValid());
}

void tst_QTreeView::clicked()
{
    QtTestModel model(10, 2);

    QTreeView view;
    view.setModel(&model);
    view.show();

    QModelIndex firstIndex = model.index(0, 0, QModelIndex());
    QVERIFY(firstIndex.isValid());
    int itemHeight = view.visualRect(firstIndex).height();
    int itemOffset = view.visualRect(firstIndex).width() / 2;
    view.resize(200, itemHeight * (model.rows + 2));

    for (int i = 0; i < model.rowCount(); ++i) {
        QPoint p(itemOffset, 1 + itemHeight * i);
        QModelIndex index = view.indexAt(p);
        if (!index.isValid())
            continue;
        QSignalSpy spy(&view, SIGNAL(clicked(const QModelIndex&)));
        QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
        QTRY_COMPARE(spy.count(), 1);
    }
}

void tst_QTreeView::mouseDoubleClick()
{
    // Test double clicks outside the viewport.
    // (Should be a no-op and should not expand any item.)

    QStandardItemModel model(20, 2);
    for (int i = 0; i < model.rowCount(); i++) {
        QModelIndex index = model.index(i, 0, QModelIndex());
        model.insertRows(0, 20, index);
        model.insertColumns(0,2,index);
        for (int i1 = 0; i1 <  model.rowCount(index); i1++) {
            QModelIndex index2 = model.index(i1, 0, index);
        }
    }

    QTreeView view;
    view.setModel(&model);

    // make sure the viewport height is smaller than the contents height.
    view.resize(200,200);
    view.move(0,0);
    view.show();
    QModelIndex index = model.index(0, 0, QModelIndex());
    view.setCurrentIndex(index);

    view.setExpanded(model.index(0,0, QModelIndex()), true);
    view.setHorizontalScrollBarPolicy(Qt::ScrollBarAlwaysOn);
    view.setVerticalScrollBarPolicy(Qt::ScrollBarAlwaysOn);

    // Make sure all items are collapsed
    for (int i = 0; i < model.rowCount(QModelIndex()); i++) {
        view.setExpanded(model.index(i,0, QModelIndex()), false);
    }

    int maximum = view.verticalScrollBar()->maximum();

    // Doubleclick in the bottom right corner, in the unused area between the vertical and horizontal scrollbar.
    int vsw = view.verticalScrollBar()->width();
    int hsh = view.horizontalScrollBar()->height();
    QTest::mouseDClick(&view, Qt::LeftButton, Qt::NoModifier, QPoint(view.width() - vsw + 1, view.height() - hsh + 1));
    // Should not have expanded, thus maximum() should have the same value.
    QCOMPARE(maximum, view.verticalScrollBar()->maximum());

    view.setExpandsOnDoubleClick(false);
    QTest::mouseDClick(&view, Qt::LeftButton, Qt::NoModifier, view.visualRect(index).center());
    QVERIFY(!view.isExpanded(index));
}

void tst_QTreeView::rowsAboutToBeRemoved()
{
    QStandardItemModel model(3, 1);
    for (int i = 0; i < model.rowCount(); i++) {
        QModelIndex index = model.index(i, 0, QModelIndex());
        model.setData(index, QString("%1").arg(i));
        model.insertRows(0, 4, index);
        model.insertColumns(0,1,index);
        for (int i1 = 0; i1 <  model.rowCount(index); i1++) {
            QModelIndex index2 = model.index(i1, 0, index);
            model.setData(index2, QString("%1%2").arg(i).arg(i1));
        }
    }

    PublicView view;
    view.setModel(&model);
    view.show();
    QModelIndex index = model.index(0,0, QModelIndex());
    view.setCurrentIndex(index);
    view.setExpanded(model.index(0,0, QModelIndex()), true);

    for (int i = 0; i < model.rowCount(QModelIndex()); i++) {
        view.setExpanded(model.index(i,0, QModelIndex()), true);
    }

    QSignalSpy spy1(&model, SIGNAL(rowsAboutToBeRemoved(QModelIndex,int,int)));

    model.removeRows(1,1);
    QCOMPARE(view.state(), 0);
    // Should not be 5 (or any other number for that sake :)
    QCOMPARE(spy1.count(), 1);

}

void tst_QTreeView::headerSections_unhideSection()
{
    QtTestModel model(10, 7);

    QTreeView view;

    view.setModel(&model);
    view.show();
    int size = view.header()->sectionSize(0);
    view.setColumnHidden(0, true);

    // should go back to old size
    view.setColumnHidden(0, false);
    QCOMPARE(size, view.header()->sectionSize(0));
}

void tst_QTreeView::columnAt()
{
    QtTestModel model;
    model.rows = model.cols = 10;
    QTreeView view;
    view.resize(500,500);
    view.setModel(&model);

    QCOMPARE(view.columnAt(0), 0);
    // really this is testing the header... so not much more should be needed if the header is working...
}

void tst_QTreeView::scrollTo()
{
#define CHECK_VISIBLE(ROW,COL) QVERIFY(QRect(QPoint(),view.viewport()->size()).contains(\
                    view.visualRect(model.index((ROW),(COL),QModelIndex()))))

    QtTestModel model;
    model.rows = model.cols = 100;
    QTreeView view;
    view.setUniformRowHeights(true);
    view.scrollTo(QModelIndex(), QTreeView::PositionAtTop);
    view.setModel(&model);

    // ### check the scrollbar values an make sure it actually scrolls to the item
    // ### check for bot item based and pixel based scrolling
    // ### create a data function for this test

    view.scrollTo(QModelIndex());
    view.scrollTo(model.index(0,0,QModelIndex()));
    view.scrollTo(model.index(0,0,QModelIndex()), QTreeView::PositionAtTop);
    view.scrollTo(model.index(0,0,QModelIndex()), QTreeView::PositionAtBottom);

    //

    view.show();
    view.setVerticalScrollMode(QAbstractItemView::ScrollPerItem); //some styles change that in Polish

    view.resize(300, 200);
    //view.verticalScrollBar()->setValue(0);

    view.scrollTo(model.index(0,0,QModelIndex()));
    CHECK_VISIBLE(0,0);
    QCOMPARE(view.verticalScrollBar()->value(), 0);

    view.header()->resizeSection(0, 5); // now we only see the branches
    view.scrollTo(model.index(5, 0, QModelIndex()), QTreeView::PositionAtTop);
    QCOMPARE(view.verticalScrollBar()->value(), 5);

    view.scrollTo(model.index(60, 60, QModelIndex()));

    CHECK_VISIBLE(60,60);
    view.scrollTo(model.index(60, 30, QModelIndex()));
    CHECK_VISIBLE(60,30);
    view.scrollTo(model.index(30, 30, QModelIndex()));
    CHECK_VISIBLE(30,30);

    // TODO force it to move to the left and then the right
}

void tst_QTreeView::rowsAboutToBeRemoved_move()
{
    QStandardItemModel model(3,1);
    QTreeView view;
    view.setModel(&model);
    QModelIndex indexThatWantsToLiveButWillDieDieITellYou;
    QModelIndex parent = model.index(2, 0 );
    view.expand(parent);
    for (int i = 0; i < 6; ++i) {
        model.insertRows(0, 1, parent);
        model.insertColumns(0, 1, parent);
        QModelIndex index = model.index(0, 0, parent);
        view.expand(index);
        if ( i == 3 )
            indexThatWantsToLiveButWillDieDieITellYou = index;
        model.setData(index, i);
        parent = index;
    }
    view.resize(600,800);
    view.show();
    view.doItemsLayout();
    static_cast<PublicView *>(&view)->executeDelayedItemsLayout();
    parent = indexThatWantsToLiveButWillDieDieITellYou.parent();
    QCOMPARE(view.isExpanded(indexThatWantsToLiveButWillDieDieITellYou), true);
    QCOMPARE(parent.isValid(), true);
    QCOMPARE(parent.parent().isValid(), true);
    view.expand(parent);
    QCOMPARE(view.isExpanded(parent), true);
    QCOMPARE(view.isExpanded(indexThatWantsToLiveButWillDieDieITellYou), true);
    model.removeRow(0, indexThatWantsToLiveButWillDieDieITellYou);
    QCOMPARE(view.isExpanded(parent), true);
    QCOMPARE(view.isExpanded(indexThatWantsToLiveButWillDieDieITellYou), true);
}

void tst_QTreeView::resizeColumnToContents()
{
    QStandardItemModel model(50,2);
    for (int r = 0; r < model.rowCount(); ++r) {
        for (int c = 0; c < model.columnCount(); ++c) {
            QModelIndex idx = model.index(r, c);
            model.setData(idx, QString::fromAscii("%1,%2").arg(r).arg(c) );
            model.insertColumns(0, 2, idx);
            model.insertRows(0, 6, idx);
            for (int i = 0; i < 6; ++i) {
                for (int j = 0; j < 2 ; ++j) {
                    model.setData(model.index(i, j, idx), QString::fromAscii("child%1%2").arg(i).arg(j));
                }
            }
        }
    }
    QTreeView view;
    view.setModel(&model);
    view.show();
    qApp->processEvents(); //must have this, or else it will not scroll
    view.scrollToBottom();
    view.resizeColumnToContents(0);
    int oldColumnSize = view.header()->sectionSize(0);
    view.setRootIndex(model.index(0, 0));
    view.resizeColumnToContents(0);        //Earlier, this gave an assert
    QVERIFY(view.header()->sectionSize(0) > oldColumnSize);
}

void tst_QTreeView::insertAfterSelect()
{
    QtTestModel model;
    model.rows = model.cols = 10;
    QTreeView view;
    view.setModel(&model);
    view.show();
    QModelIndex firstIndex = model.index(0, 0, QModelIndex());
    QVERIFY(firstIndex.isValid());
    int itemOffset = view.visualRect(firstIndex).width() / 2;
    QPoint p(itemOffset, 1);
    QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QVERIFY(view.selectionModel()->isSelected(firstIndex));
    model.insertNewRow();
    QVERIFY(view.selectionModel()->isSelected(firstIndex)); // Should still be selected
}

void tst_QTreeView::removeAfterSelect()
{
    QtTestModel model;
    model.rows = model.cols = 10;
    QTreeView view;
    view.setModel(&model);
    view.show();
    QModelIndex firstIndex = model.index(0, 0, QModelIndex());
    QVERIFY(firstIndex.isValid());
    int itemOffset = view.visualRect(firstIndex).width() / 2;
    QPoint p(itemOffset, 1);
    QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QVERIFY(view.selectionModel()->isSelected(firstIndex));
    model.removeLastRow();
    QVERIFY(view.selectionModel()->isSelected(firstIndex)); // Should still be selected
}

void tst_QTreeView::hiddenItems()
{
    QtTestModel model;
    model.rows = model.cols = 10;
    QTreeView view;
    view.setModel(&model);
    view.show();

    QModelIndex firstIndex = model.index(1, 0, QModelIndex());
    QVERIFY(firstIndex.isValid());
    if (model.canFetchMore(firstIndex))
        model.fetchMore(firstIndex);
    for (int i=0; i < model.rowCount(firstIndex); i++)
        view.setRowHidden(i , firstIndex, true );

    int itemOffset = view.visualRect(firstIndex).width() / 2;
    int itemHeight = view.visualRect(firstIndex).height();
    QPoint p(itemOffset, itemHeight + 1);
    view.setExpanded(firstIndex, false);
    QTest::mouseDClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QCOMPARE(view.isExpanded(firstIndex), false);

    p.setX( 5 );
    QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QCOMPARE(view.isExpanded(firstIndex), false);
}

void tst_QTreeView::spanningItems()
{
    QtTestModel model;
    model.rows = model.cols = 10;
    PublicView view;
    view.setModel(&model);
    view.show();

    int itemWidth = view.header()->sectionSize(0);
    int itemHeight = view.visualRect(model.index(0, 0, QModelIndex())).height();

    // every second row is spanning
    for (int i = 1; i < model.rowCount(QModelIndex()); i += 2)
        view.setFirstColumnSpanned(i , QModelIndex(), true);

    // non-spanning item
    QPoint p(itemWidth / 2, itemHeight / 2); // column 0, row 0
    view.setCurrentIndex(QModelIndex());
    QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QCOMPARE(view.currentIndex(), model.index(0, 0, QModelIndex()));
    QCOMPARE(view.header()->sectionSize(0) - view.indentation(),
             view.visualRect(model.index(0, 0, QModelIndex())).width());

    // spanning item
    p.setX(itemWidth + (itemWidth / 2)); // column 1
    p.setY(itemHeight + (itemHeight / 2)); // row 1
    QTest::mouseClick(view.viewport(), Qt::LeftButton, Qt::NoModifier, p);
    QCOMPARE(view.currentIndex(), model.index(1, 0, QModelIndex()));
    QCOMPARE(view.header()->length() - view.indentation(),
             view.visualRect(model.index(1, 0, QModelIndex())).width());

    // size hint
    // every second row is un-spanned
    QStyleOptionViewItem option = view.viewOptions();
    int w = view.header()->sectionSizeHint(0);
    for (int i = 0; i < model.rowCount(QModelIndex()); ++i) {
        if (!view.isFirstColumnSpanned(i, QModelIndex())) {
            QModelIndex index = model.index(i, 0, QModelIndex());
            w = qMax(w, view.itemDelegate(index)->sizeHint(option, index).width() + view.indentation());
        }
    }
    QCOMPARE(view.sizeHintForColumn(0), w);
}

void tst_QTreeView::selectionOrderTest()
{
    QVERIFY(((QItemSelectionModel*)sender())->currentIndex().row() != -1);
}

void tst_QTreeView::selection()
{
    QTreeView treeView;
    QStandardItemModel m(10, 2);
    for (int i = 0;i < 10; ++i)
        m.setData(m.index(i, 0), i);
    treeView.setModel(&m);

    treeView.setSelectionBehavior(QAbstractItemView::SelectRows);
    treeView.setSelectionMode(QAbstractItemView::ExtendedSelection);

    connect(treeView.selectionModel(), SIGNAL(selectionChanged(const QItemSelection&, const QItemSelection&)),
            this, SLOT(selectionOrderTest()));

    treeView.show();

    QTest::mousePress(treeView.viewport(), Qt::LeftButton, 0, treeView.visualRect(m.index(1, 0)).center());
    QTest::keyPress(treeView.viewport(), Qt::Key_Down);
}

//From task 151686 QTreeView ExtendedSelection selects hidden rows
void tst_QTreeView::selectionWithHiddenItems()
{
    QStandardItemModel model;
    for (int i = 0; i < model.rowCount(); ++i)
        model.setData(model.index(i,0), QString("row %1").arg(i));

    QStandardItem item0("row 0");
    QStandardItem item1("row 1");
    QStandardItem item2("row 2");
    QStandardItem item3("row 3");
    model.appendColumn( QList<QStandardItem*>() << &item0 << &item1 << &item2 << &item3);

    QStandardItem child("child");
    item1.appendRow( &child);

    QTreeView view;
    view.setModel(&model);
    view.setSelectionMode(QAbstractItemView::ExtendedSelection);
    view.show();
    qApp->processEvents();

    //child should not be selected as it is hidden (its parent is not expanded)
    view.selectAll();
    QCOMPARE(view.selectionModel()->selection().count(), 1); //one range
    QCOMPARE(view.selectionModel()->selectedRows().count(), 4);
    view.expandAll();
    QVERIFY(view.isExpanded(item1.index()));
    QCOMPARE(view.selectionModel()->selection().count(), 1);
    QCOMPARE(view.selectionModel()->selectedRows().count(), 4);
    QVERIFY( !view.selectionModel()->isSelected(model.indexFromItem(&child)));
    view.clearSelection();
    QVERIFY(view.isExpanded(item1.index()));

    //child should be selected as it is visible (its parent is expanded)
    view.selectAll();
    QCOMPARE(view.selectionModel()->selection().count(), 2);
    QCOMPARE(view.selectionModel()->selectedRows().count(), 5); //everything is selected
    view.clearSelection();

    //we hide the node with a child (there should then be 3 items selected in 2 ranges)
    view.setRowHidden(1, QModelIndex(), true);
    QVERIFY(view.isExpanded(item1.index()));
    qApp->processEvents();
    view.selectAll();
    QCOMPARE(view.selectionModel()->selection().count(), 2);
    QCOMPARE(view.selectionModel()->selectedRows().count(), 3);
    QVERIFY( !view.selectionModel()->isSelected(model.indexFromItem(&item1)));
    QVERIFY( !view.selectionModel()->isSelected(model.indexFromItem(&child)));

    view.setRowHidden(1, QModelIndex(), false);
    QVERIFY(view.isExpanded(item1.index()));
    view.clearSelection();

    //we hide a node without children (there should then be 4 items selected in 3 ranges)
    view.setRowHidden(2, QModelIndex(), true);
    qApp->processEvents();
    QVERIFY(view.isExpanded(item1.index()));
    view.selectAll();
    QVERIFY(view.isExpanded(item1.index()));
    QCOMPARE(view.selectionModel()->selection().count(), 3);
    QCOMPARE(view.selectionModel()->selectedRows().count(), 4);
    QVERIFY( !view.selectionModel()->isSelected(model.indexFromItem(&item2)));
    view.setRowHidden(2, QModelIndex(), false);
    QVERIFY(view.isExpanded(item1.index()));
    view.clearSelection();
}

void tst_QTreeView::selectAll()
{
    QStandardItemModel model(4,4);
    PublicView view2;
    view2.setModel(&model);
    view2.setSelectionMode(QAbstractItemView::ExtendedSelection);
    view2.selectAll();  // Should work with an empty model
    //everything should be selected since we are in ExtendedSelection mode
    QCOMPARE(view2.selectedIndexes().count(), model.rowCount() * model.columnCount());

    for (int i = 0; i < model.rowCount(); ++i)
        model.setData(model.index(i,0), QString("row %1").arg(i));
    PublicView view;
    view.setModel(&model);
    int selectedCount = view.selectedIndexes().count();
    view.selectAll();
    QCOMPARE(view.selectedIndexes().count(), selectedCount);
}

void tst_QTreeView::extendedSelection_data()
{
    QTest::addColumn<QPoint>("mousePressPos");
    QTest::addColumn<int>("selectedCount");

    QTest::newRow("select") << QPoint(10, 10) << 2;
    QTest::newRow("unselect") << QPoint(10, 150) << 0;
}

void tst_QTreeView::extendedSelection()
{
    QFETCH(QPoint, mousePressPos);
    QFETCH(int, selectedCount);

    QStandardItemModel model(5, 2);
    QTreeView view;
    view.resize(qMax(mousePressPos.x() * 2, 200), qMax(mousePressPos.y() * 2, 200));
    view.setModel(&model);
    view.setSelectionMode(QAbstractItemView::ExtendedSelection);
    view.show();
    QTest::mousePress(view.viewport(), Qt::LeftButton, 0, mousePressPos);
    QCOMPARE(view.selectionModel()->selectedIndexes().count(), selectedCount);
}

void tst_QTreeView::rowSizeHint()
{
    //tests whether the correct visible columns are taken into account when
    //calculating the height of a line
    QStandardItemModel model(1,3);
    model.setData( model.index(0,0), QSize(20,40), Qt::SizeHintRole);
    model.setData( model.index(0,1), QSize(20,10), Qt::SizeHintRole);
    model.setData( model.index(0,2), QSize(20,10), Qt::SizeHintRole);
    QTreeView view;
    view.setModel(&model);

    view.header()->moveSection(1, 0); //the 2nd column goes to the 1st place

    view.show();

    //it must be 40 since the tallest item that defines the height of a line
    QCOMPARE( view.visualRect(model.index(0,0)).height(), 40);
    QCOMPARE( view.visualRect(model.index(0,1)).height(), 40);
    QCOMPARE( view.visualRect(model.index(0,2)).height(), 40);
}


//From task 155449 (QTreeWidget has a large width for the first section when sorting
//is turned on before items are added)
void tst_QTreeView::setSortingEnabled()
{
    //1st the treeview is a top-level
    {
        QTreeView view;
        QStandardItemModel model(1,1);
        view.setModel(&model);
        const int size = view.header()->sectionSize(0);
        view.setSortingEnabled(true);
        model.setColumnCount(3);
        //we test that changing the column count doesn't change the 1st column size
        QCOMPARE(view.header()->sectionSize(0), size);
    }

    //then it is no more a top-level
    {
        QMainWindow win;
        QTreeView view;
        QStandardItemModel model(1,1);
        view.setModel(&model);
        win.setCentralWidget(&view);
        const int size = view.header()->sectionSize(0);
        view.setSortingEnabled(true);
        model.setColumnCount(3);
        //we test that changing the column count doesn't change the 1st column size
        QCOMPARE(view.header()->sectionSize(0), size);
    }
}

void tst_QTreeView::headerHidden()
{
    QTreeView view;
    QStandardItemModel model;
    view.setModel(&model);
    QCOMPARE(view.isHeaderHidden(), false);
    QCOMPARE(view.header()->isHidden(), false);
    view.setHeaderHidden(true);
    QCOMPARE(view.isHeaderHidden(), true);
    QCOMPARE(view.header()->isHidden(), true);
}

// From Task 145199 (crash when column 0 having at least one expanded item is removed and then
// inserted). The test passes simply if it doesn't crash, hence there are no calls
// to QCOMPARE() or QVERIFY().
void tst_QTreeView::removeAndInsertExpandedCol0()
{
    QTreeView view;
    QStandardItemModel model;
    view.setModel(&model);

    model.setColumnCount(1);

    QStandardItem *item0 = new QStandardItem(QString("item 0"));
    model.invisibleRootItem()->appendRow(item0);
    view.expand(item0->index());
    QStandardItem *item1 = new QStandardItem(QString("item 1"));
    item0->appendRow(item1);

    model.removeColumns(0, 1);
    model.insertColumns(0, 1);

    view.show();
    qApp->processEvents();
}

void tst_QTreeView::disabledButCheckable()
{
    QTreeView view;
    QStandardItemModel model;
    QStandardItem *item;
    item = new QStandardItem(QLatin1String("Row 1 Item"));
    model.insertRow(0, item);

    item = new QStandardItem(QLatin1String("Row 2 Item"));
    item->setCheckable(true);
    item->setEnabled(false);
    model.insertRow(1, item);

    view.setModel(&model);
    view.setCurrentIndex(model.index(1,0));
    QCOMPARE(item->checkState(), Qt::Unchecked);
    view.show();

    QTest::keyClick(&view, Qt::Key_Space);
    QCOMPARE(item->checkState(), Qt::Unchecked);
}

void tst_QTreeView::sortByColumn_data()
{
    QTest::addColumn<bool>("sortingEnabled");
    QTest::newRow("sorting enabled") << true;
    QTest::newRow("sorting disabled") << false;
}

// Checks sorting and that sortByColumn also sets the sortIndicator
void tst_QTreeView::sortByColumn()
{
    QFETCH(bool, sortingEnabled);
    QTreeView view;
    QStandardItemModel model(4,2);
    model.setItem(0,0,new QStandardItem("b"));
    model.setItem(1,0,new QStandardItem("d"));
    model.setItem(2,0,new QStandardItem("c"));
    model.setItem(3,0,new QStandardItem("a"));
    model.setItem(0,1,new QStandardItem("e"));
    model.setItem(1,1,new QStandardItem("g"));
    model.setItem(2,1,new QStandardItem("h"));
    model.setItem(3,1,new QStandardItem("f"));

    view.setSortingEnabled(sortingEnabled);
    view.setModel(&model);
    view.sortByColumn(1);
    QCOMPARE(view.header()->sortIndicatorSection(), 1);
    QCOMPARE(view.model()->data(view.model()->index(0,1)).toString(), QString::fromLatin1("h"));
    QCOMPARE(view.model()->data(view.model()->index(1,1)).toString(), QString::fromLatin1("g"));
    view.sortByColumn(0, Qt::AscendingOrder);
    QCOMPARE(view.header()->sortIndicatorSection(), 0);
    QCOMPARE(view.model()->data(view.model()->index(0,0)).toString(), QString::fromLatin1("a"));
    QCOMPARE(view.model()->data(view.model()->index(1,0)).toString(), QString::fromLatin1("b"));
}

/*
    This is a model that every time kill() is called it will completely change
    all of its nodes for new nodes.  It then asserts if you later use a dead node.
 */
class EvilModel: public QAbstractItemModel
{

public:
    class Node {
    public:
        Node(Node *p = 0, int level = 0) : parent(p), isDead(false) {
            populate(level);
        }
        ~Node()
        {
            qDeleteAll(children.begin(), children.end());
            qDeleteAll(deadChildren.begin(), deadChildren.end());
        }

        void populate(int level = 0) {
            if (level < 4)
                for (int i = 0; i < 5; ++i)
                    children.append(new Node(this, level + 1));
        }
        void kill() {
            for (int i = children.count() -1; i >= 0; --i) {
                children.at(i)->kill();
                if (parent == 0) {
                    deadChildren.append(children.at(i));
                    children.removeAt(i);
                }
            }
            if (parent == 0) {
                Q_ASSERT(children.isEmpty());
                populate();
            } else {
                isDead = true;
            }
        }

        QList<Node*> children;
        QList<Node*> deadChildren;
        Node *parent;
        bool isDead;
    };

    Node *root;

    EvilModel(QObject *parent = 0): QAbstractItemModel(parent), root(new Node)
    {
    }
    ~EvilModel()
    {
        delete root;
    }

    void change()
    {
        emit layoutAboutToBeChanged();
        QModelIndexList oldList = persistentIndexList();
        QList<QStack<int> > oldListPath;
        for (int i = 0; i < oldList.count(); ++i) {
            QModelIndex idx = oldList.at(i);
            QStack<int> path;
            while (idx.isValid()) {
                path.push(idx.row());
                idx = idx.parent();
            }
            oldListPath.append(path);
        }
        root->kill();

        QModelIndexList newList;
        for (int i = 0; i < oldListPath.count(); ++i) {
            QStack<int> path = oldListPath[i];
            QModelIndex idx;
            while(!path.isEmpty()) {
                idx = index(path.pop(), 0, idx);
            }
            newList.append(idx);
        }

        changePersistentIndexList(oldList, newList);
        emit layoutChanged();
    }

    int rowCount(const QModelIndex& parent = QModelIndex()) const {
        Node *parentNode = root;
        if (parent.isValid()) {
            parentNode = static_cast<Node*>(parent.internalPointer());
            Q_ASSERT(!parentNode->isDead);
        }
        return parentNode->children.count();
    }
    int columnCount(const QModelIndex& parent = QModelIndex()) const {
        if (parent.column() > 0)
            return 0;
        return 1;
    }

    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const
    {
        Node *grandparentNode = static_cast<Node*>(parent.internalPointer());
        Node *parentNode = root;
        if (parent.isValid()) {
            Q_ASSERT(!grandparentNode->isDead);
            parentNode = grandparentNode->children[parent.row()];
            Q_ASSERT(!parentNode->isDead);
        }
        return createIndex(row, column, parentNode);
    }

    QModelIndex parent(const QModelIndex &index) const
    {
        Node *parent = static_cast<Node*>(index.internalPointer());
        Node *grandparent = parent->parent;
        if (!grandparent)
            return QModelIndex();
        return createIndex(grandparent->children.indexOf(parent), 0, grandparent);
    }

    QVariant data(const QModelIndex &idx, int role) const
    {
        if (idx.isValid() && role == Qt::DisplayRole) {
            Node *parentNode = root;
            if (idx.isValid()) {
                parentNode = static_cast<Node*>(idx.internalPointer());
                Q_ASSERT(!parentNode->isDead);
            }
            return QString("[%1,%2,%3]").arg(idx.row()).arg(idx.column())
                .arg(parentNode->isDead ? "dead" : "alive");
        }
        return QVariant();
    }
};

void tst_QTreeView::evilModel_data()
{
    QTest::addColumn<bool>("visible");
    QTest::newRow("visible") << false;
}

void tst_QTreeView::evilModel()
{
    QFETCH(bool, visible);
    // init
    PublicView view;
    EvilModel model;
    view.setModel(&model);
    view.setVisible(visible);
    QPersistentModelIndex firstLevel = model.index(0, 0);
    QPersistentModelIndex secondLevel = model.index(1, 0, firstLevel);
    QPersistentModelIndex thirdLevel = model.index(2, 0, secondLevel);
    view.setExpanded(firstLevel, true);
    view.setExpanded(secondLevel, true);
    view.setExpanded(thirdLevel, true);
    model.change();

    // tests
    view.setRowHidden(0, firstLevel, true);
    model.change();

    return;
    view.setFirstColumnSpanned(1, QModelIndex(), true);
    model.change();

    view.expand(secondLevel);
    model.change();

    view.collapse(secondLevel);
    model.change();

    view.isExpanded(secondLevel);
    view.setCurrentIndex(firstLevel);
    model.change();

    view.keyboardSearch("foo");
    model.change();

    view.visualRect(secondLevel);
    model.change();

    view.scrollTo(thirdLevel);
    model.change();

    view.repaint();
    model.change();

    QTest::mouseDClick(view.viewport(), Qt::LeftButton);
    model.change();

    view.indexAt(QPoint(10, 10));
    model.change();

    view.indexAbove(model.index(2, 0));
    model.change();

    view.indexBelow(model.index(1, 0));
    model.change();

    QRect rect(0, 0, 10, 10);
    view.setSelection(rect, QItemSelectionModel::Select);
    model.change();

    view.moveCursor(PublicView::MoveDown, Qt::NoModifier);
    model.change();

    view.resizeColumnToContents(1);
    model.change();

    view.QAbstractItemView::sizeHintForColumn(1);
    model.change();

    view.rowHeight(secondLevel);
    model.change();

    view.setRootIsDecorated(true);
    model.change();

    view.setItemsExpandable(false);
    model.change();

    view.columnViewportPosition(0);
    model.change();

    view.columnWidth(0);
    model.change();

    view.setColumnWidth(0, 30);
    model.change();

    view.columnAt(15);
    model.change();

    view.isColumnHidden(1);
    model.change();

    view.setColumnHidden(2, true);
    model.change();

    view.isHeaderHidden();
    model.change();

    view.setHeaderHidden(true);
    model.change();

    view.isRowHidden(2, secondLevel);
    model.change();

    view.setRowHidden(3, secondLevel, true);
    model.change();

    view.isFirstColumnSpanned(3, thirdLevel);
    model.change();

    view.setSortingEnabled(true);
    model.change();

    view.isSortingEnabled();
    model.change();

    view.setAnimated(true);
    model.change();

    view.isAnimated();
    model.change();

    view.setAllColumnsShowFocus(true);
    model.change();

    view.allColumnsShowFocus();
    model.change();

    view.doItemsLayout();
    model.change();

    view.reset();
    model.change();

    view.sortByColumn(1, Qt::AscendingOrder);
    model.change();

    view.dataChanged(secondLevel, secondLevel);
    model.change();

    view.hideColumn(1);
    model.change();

    view.showColumn(1);
    model.change();

    view.resizeColumnToContents(1);
    model.change();

    view.sortByColumn(1);
    model.change();

    view.selectAll();
    model.change();

    view.expandAll();
    model.change();

    view.collapseAll();
    model.change();

    view.expandToDepth(3);
    model.change();

    view.setRootIndex(secondLevel);
}

void tst_QTreeView::indexRowSizeHint()
{
    QStandardItemModel model(10, 1);
    PublicView view;

    view.setModel(&model);

    QModelIndex index = model.index(5, 0);
    QPushButton *w = new QPushButton("Test");
    view.setIndexWidget(index, w);

    view.show();

    QCOMPARE(view.indexRowSizeHint(index), w->sizeHint().height());
}

void tst_QTreeView::filterProxyModelCrash()
{
    QStandardItemModel model;
    QList<QStandardItem *> items;
    for (int i = 0; i < 100; i++)
        items << new QStandardItem(QString::fromLatin1("item %1").arg(i));
    model.appendColumn(items);

    QSortFilterProxyModel proxy;
    proxy.setSourceModel(&model);

    QTreeView view;
    view.setModel(&proxy);
    view.show();
    QTest::qWait(30);
    proxy.invalidate();
    view.verticalScrollBar()->setValue(15);
    QTest::qWait(20);

    proxy.invalidate();
    view.repaint(); //used to crash
}

void tst_QTreeView::styleOptionViewItem()
{
    class MyDelegate : public QStyledItemDelegate
    {
        public:
            void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
            {
                QVERIFY(qstyleoption_cast<const QStyleOptionViewItemV4 *>(&option));
                QStyleOptionViewItemV4 opt(option);
                initStyleOption(&opt, index);

                QVERIFY(!opt.text.isEmpty());
                QCOMPARE(opt.index, index);
                QCOMPARE(!(opt.features & QStyleOptionViewItemV2::Alternate), !(index.row() % 2));
                QCOMPARE(!(opt.features & QStyleOptionViewItemV2::HasCheckIndicator), !opt.text.contains("Checkable"));

                if (opt.text.contains("Beginning"))
                    QCOMPARE(opt.viewItemPosition, QStyleOptionViewItemV4::Beginning);

                if (opt.text.contains("Middle"))
                    QCOMPARE(opt.viewItemPosition, QStyleOptionViewItemV4::Middle);

                if (opt.text.contains("End"))
                    QCOMPARE(opt.viewItemPosition, QStyleOptionViewItemV4::End);

                if (opt.text.contains("OnlyOne"))
                    QCOMPARE(opt.viewItemPosition, QStyleOptionViewItemV4::OnlyOne);

                if (opt.text.contains("Checked"))
                    QCOMPARE(opt.checkState, Qt::Checked);
                else
                    QCOMPARE(opt.checkState, Qt::Unchecked);

                QVERIFY(!opt.text.contains("Assert"));

                QStyledItemDelegate::paint(painter, option, index);
                count++;
            }
            mutable int count;
    };

    QTreeView view;
    QStandardItemModel model;
    view.setModel(&model);
    MyDelegate delegate;
    view.setItemDelegate(&delegate);
    model.appendRow(QList<QStandardItem*>()
        << new QStandardItem("Beginning") <<  new QStandardItem("Middle") << new QStandardItem("Middle") << new QStandardItem("End") );
    model.appendRow(QList<QStandardItem*>()
        << new QStandardItem("Beginning") <<  new QStandardItem("Middle") << new QStandardItem("Middle") << new QStandardItem("End") );
    model.appendRow(QList<QStandardItem*>()
        << new QStandardItem("OnlyOne") <<  new QStandardItem("Assert") << new QStandardItem("Assert") << new QStandardItem("Assert") );
    QStandardItem *checkable = new QStandardItem("Checkable");
    checkable->setCheckable(true);
    QStandardItem *checked = new QStandardItem("Checkable Checked");
    checkable->setCheckable(true);
    checked->setCheckState(Qt::Checked);
    model.appendRow(QList<QStandardItem*>()
        << new QStandardItem("Beginning") <<  checkable << checked << new QStandardItem("End") );

    view.setFirstColumnSpanned(2, QModelIndex(), true);
    view.setAlternatingRowColors(true);

    delegate.count = 0;
    view.showMaximized();
    QTRY_VERIFY(delegate.count >= 13);
}

class task174627_TreeView : public QTreeView
{
    Q_OBJECT
protected slots:
    void currentChanged(const QModelIndex &current, const QModelIndex &)
    { emit currentChanged(current); }
signals:
    void currentChanged(const QModelIndex &);
};

void tst_QTreeView::task174627_moveLeftToRoot()
{
    QStandardItemModel model;
    QStandardItem *item1 = new QStandardItem(QString("item 1"));
    model.invisibleRootItem()->appendRow(item1);
    QStandardItem *item2 = new QStandardItem(QString("item 2"));
    item1->appendRow(item2);

    task174627_TreeView view;
    view.setModel(&model);
    view.setRootIndex(item1->index());
    view.setCurrentIndex(item2->index());

    QSignalSpy spy(&view, SIGNAL(currentChanged(QModelIndex)));
    QTest::keyClick(&view, Qt::Key_Left);
    QCOMPARE(spy.count(), 0);
}

void tst_QTreeView::task171902_expandWith1stColHidden()
{
    //the task was: if the first column of a treeview is hidden, the expanded state is not correctly restored
    QStandardItemModel model;
    QStandardItem root("root"), root2("root"),
        subitem("subitem"), subitem2("subitem"),
        subsubitem("subsubitem"), subsubitem2("subsubitem");

    model.appendRow( QList<QStandardItem *>() << &root << &root2);
    root.appendRow( QList<QStandardItem *>() << &subitem << &subitem2);
    subitem.appendRow( QList<QStandardItem *>() << &subsubitem << &subsubitem2);

    QTreeView view;
    view.setModel(&model);

    view.setColumnHidden(0, true);
    view.expandAll();
    view.collapse(root.index());
    view.expand(root.index());

    QCOMPARE(view.isExpanded(root.index()), true);
    QCOMPARE(view.isExpanded(subitem.index()), true);

}

void tst_QTreeView::task203696_hidingColumnsAndRowsn()
{
    QTreeView view;
    QStandardItemModel *model = new QStandardItemModel(0, 3, &view);
    for (int i = 0; i < 3; ++i)
    {
        model->insertRow(model->rowCount());
        for (int j = 0; j < model->columnCount(); ++j)
            model->setData(model->index(i, j), QString("row %1 col %2").arg(i).arg(j));
    }
    view.setModel(model);
    view.show();
    view.setColumnHidden(0, true);
    view.setRowHidden(0, QModelIndex(), true);
    QCOMPARE(view.indexAt(QPoint(0, 0)), model->index(1, 1));
}


void tst_QTreeView::addRowsWhileSectionsAreHidden()
{
    QTreeView view;
    for (int pass = 1; pass <= 2; ++pass) {
        QStandardItemModel *model = new QStandardItemModel(6, pass, &view);
        view.setModel(model);
        view.show();

        int i;
        for (i = 0; i < 3; ++i)
        {
            model->insertRow(model->rowCount());
            for (int j = 0; j < model->columnCount(); ++j) {
                model->setData(model->index(i, j), QString("row %1 col %2").arg(i).arg(j));
            }
        }
        int col;
        for (col = 0; col < pass; ++col)
            view.setColumnHidden(col, true);
        for (i = 3; i < 6; ++i)
        {
            model->insertRow(model->rowCount());
            for (int j = 0; j < model->columnCount(); ++j) {
                model->setData(model->index(i, j), QString("row %1 col %2").arg(i).arg(j));
            }
        }
        for (col = 0; col < pass; ++col)
            view.setColumnHidden(col, false);
        QTest::qWait(250);

        for (i = 0; i < 6; ++i) {
            QRect rect = view.visualRect(model->index(i, 0));
            QCOMPARE(rect.isValid(), true);
        }

        delete model;
    }
}

void tst_QTreeView::task216717_updateChildren()
{
    class Tree : public QTreeWidget {
        protected:
            void paintEvent(QPaintEvent *e)
            {
                QTreeWidget::paintEvent(e);
                refreshed=true;
            }
        public:
            bool refreshed;
    } tree;
    tree.show();
    QTest::qWait(100);
    tree.refreshed = false;
    QTreeWidgetItem *parent = new QTreeWidgetItem(QStringList() << "parent");
    tree.addTopLevelItem(parent);
    QTest::qWait(10);
    QTRY_VERIFY(tree.refreshed);
    tree.refreshed = false;
    parent->addChild(new QTreeWidgetItem(QStringList() << "child"));
    QTest::qWait(10);
    QTRY_VERIFY(tree.refreshed);

}

void tst_QTreeView::task220298_selectColumns()
{
    //this is a very simple 3x3 model where the internalId of the index are different for each cell
    class Model : public QAbstractTableModel
    { public:
            virtual int columnCount ( const QModelIndex & parent = QModelIndex() ) const
            { return parent.isValid() ? 0 : 3; }
            virtual int rowCount ( const QModelIndex & parent = QModelIndex() ) const
            { return parent.isValid() ? 0 : 3; }

            virtual QVariant data ( const QModelIndex & index, int role = Qt::DisplayRole ) const
            {
                if(role == Qt::DisplayRole)
                    return QVariant(QString("%1-%2").arg(index.column()).arg(index.row()));
                return QVariant();
            }

            virtual QModelIndex index ( int row, int column, const QModelIndex & parent = QModelIndex() ) const
            {
                return hasIndex(row, column, parent) ? createIndex(row, column, column*10+row) : QModelIndex();
            }
    };

    class TreeView : public QTreeView { public: QModelIndexList selectedIndexes () const { return QTreeView::selectedIndexes(); } } view;
    Model model;
    view.setModel(&model);
    view.show();
    QTest::qWait(50);
    QTest::mouseClick(view.viewport(), Qt::LeftButton, 0,
                      view.visualRect(view.model()->index(1, 1)).center());
    QTest::qWait(50);
    QVERIFY(view.selectedIndexes().contains(view.model()->index(1, 2)));
    QVERIFY(view.selectedIndexes().contains(view.model()->index(1, 1)));
    QVERIFY(view.selectedIndexes().contains(view.model()->index(1, 0)));
}


void tst_QTreeView::task224091_appendColumns()
{
    QStandardItemModel *model = new QStandardItemModel();
    QTreeView *treeView = new QTreeView();
    treeView->setModel(model);
    treeView->show();
    treeView->resize(50,50);

    QTest::qWait(50);
    qApp->processEvents();

    QList<QStandardItem *> projlist;
    for (int k = 0; k < 10; ++k)
        projlist.append(new QStandardItem(QString("Top Level %0").arg(k)));
    model->appendColumn(projlist);
    model->invisibleRootItem()->appendRow(new QStandardItem("end"));

    QTest::qWait(50);
    qApp->processEvents();

    QVERIFY(treeView->verticalScrollBar()->isVisible());

    delete treeView;
    delete model;
}

void tst_QTreeView::task211293_removeRootIndex()
{
    QTreeView view;
    QStandardItemModel model;
    QStandardItem *A1 = new QStandardItem("A1");
    QStandardItem *B11 = new QStandardItem("B1.1");
    QStandardItem *C111 = new QStandardItem("C1.1.1");
    QStandardItem *C112 = new QStandardItem("C1.1.2");
    QStandardItem *C113 = new QStandardItem("C1.1.3");
    QStandardItem *D1131 = new QStandardItem("D1.1.3.1");
    QStandardItem *E11311 = new QStandardItem("E1.1.3.1.1");
    QStandardItem *E11312 = new QStandardItem("E1.1.3.1.2");
    QStandardItem *E11313 = new QStandardItem("E1.1.3.1.3");
    QStandardItem *E11314 = new QStandardItem("E1.1.3.1.4");
    QStandardItem *D1132 = new QStandardItem("D1.1.3.2");
    QStandardItem *E11321 = new QStandardItem("E1.1.3.2.1");
    D1132->appendRow(E11321);
    D1131->appendRow(E11311);
    D1131->appendRow(E11312);
    D1131->appendRow(E11313);
    D1131->appendRow(E11314);
    C113->appendRow(D1131);
    C113->appendRow(D1132);
    B11->appendRow(C111);
    B11->appendRow(C112);
    B11->appendRow(C113);
    A1->appendRow(B11);
    model.appendRow(A1);
    view.setModel(&model);
    view.setRootIndex(model.indexFromItem(B11));
    view.setExpanded(model.indexFromItem(B11), true);
    view.setCurrentIndex(model.indexFromItem(E11314));
    view.setExpanded(model.indexFromItem(E11314), true);
    view.show();
    qApp->processEvents();
    model.removeRows(0, 1);
    qApp->processEvents();
}

void tst_QTreeView::task225539_deleteModel()
{
    QTreeView treeView;
    treeView.show();
    QStandardItemModel *model = new QStandardItemModel(&treeView);

    QStandardItem* parentItem = model->invisibleRootItem();
    QStandardItem* item = new QStandardItem(QString("item"));
    parentItem->appendRow(item);

    treeView.setModel(model);

    QCOMPARE(item->index(), treeView.indexAt(QPoint()));

    delete model;

    QVERIFY(!treeView.indexAt(QPoint()).isValid());
}

void tst_QTreeView::task230123_setItemsExpandable()
{
    //let's check that we prevent the expansion inside a treeview
    //when the property is set.
    QTreeWidget tree;

    QTreeWidgetItem root;
    QTreeWidgetItem child;
    root.addChild(&child);
    tree.addTopLevelItem(&root);

    tree.setCurrentItem(&root);

    tree.setItemsExpandable(false);

    QTest::keyClick(&tree, Qt::Key_Plus);
    QVERIFY(!root.isExpanded());

    QTest::keyClick(&tree, Qt::Key_Right);
    QVERIFY(!root.isExpanded());

    tree.setItemsExpandable(true);

    QTest::keyClick(&tree, Qt::Key_Plus);
    QVERIFY(root.isExpanded());

    QTest::keyClick(&tree, Qt::Key_Minus);
    QVERIFY(!root.isExpanded());

    QTest::keyClick(&tree, Qt::Key_Right);
    QVERIFY(root.isExpanded());

    QTest::keyClick(&tree, Qt::Key_Left);
    QVERIFY(!root.isExpanded());

    QTest::keyClick(&tree, Qt::Key_Right);
    QVERIFY(root.isExpanded());

    const bool navToChild = tree.style()->styleHint(QStyle::SH_ItemView_ArrowKeysNavigateIntoChildren, 0, &tree);
    QTest::keyClick(&tree, Qt::Key_Right);
    QCOMPARE(tree.currentItem(), navToChild ? &child : &root);

    QTest::keyClick(&tree, Qt::Key_Right);
    //it should not be expanded: it has no leaf
    QCOMPARE(child.isExpanded(), false);

    QTest::keyClick(&tree, Qt::Key_Left);
    QCOMPARE(tree.currentItem(), &root);

    QTest::keyClick(&tree, Qt::Key_Left);
    QVERIFY(!root.isExpanded());


}

void tst_QTreeView::task202039_closePersistentEditor()
{
    QStandardItemModel model(1,1);
    QTreeView view;
    view.setModel(&model);

    QModelIndex current = model.index(0,0);
    QTest::mousePress(view.viewport(), Qt::LeftButton, 0, view.visualRect(current).center());
    QTest::mouseDClick(view.viewport(), Qt::LeftButton, 0, view.visualRect(current).center());
    QCOMPARE(view.currentIndex(), current);
    QVERIFY(view.indexWidget(current));

    view.closePersistentEditor(current);
    QVERIFY(view.indexWidget(current) == 0);

    //here was the bug: closing the persistent editor would not reset the state
    //and it was impossible to go into editinon again
    QTest::mousePress(view.viewport(), Qt::LeftButton, 0, view.visualRect(current).center());
    QTest::mouseDClick(view.viewport(), Qt::LeftButton, 0, view.visualRect(current).center());
    QCOMPARE(view.currentIndex(), current);
    QVERIFY(view.indexWidget(current));
}

void tst_QTreeView::task238873_avoidAutoReopening()
{
    QStandardItemModel model;

    QStandardItem item0("row 0");
    QStandardItem item1("row 1");
    QStandardItem item2("row 2");
    QStandardItem item3("row 3");
    model.appendColumn( QList<QStandardItem*>() << &item0 << &item1 << &item2 << &item3);

    QStandardItem child("child");
    item1.appendRow( &child);

    QTreeView view;
    view.setModel(&model);
    view.show();
    view.expandAll();
    QTest::qWait(100);

    QTest::mouseClick(view.viewport(), Qt::LeftButton, 0, view.visualRect(child.index()).center());
    QTest::qWait(20);
    QCOMPARE(view.currentIndex(), child.index());

    view.setExpanded(item1.index(), false);

    QTest::qWait(500); //enough to trigger the delayedAutoScroll timer
    QVERIFY(!view.isExpanded(item1.index()));
}

void tst_QTreeView::task244304_clickOnDecoration()
{
    QTreeView view;
    QStandardItemModel model;
    QStandardItem item0("row 0");
    QStandardItem item00("row 0");
    item0.appendRow(&item00);
    QStandardItem item1("row 1");
    model.appendColumn(QList<QStandardItem*>() << &item0 << &item1);
    view.setModel(&model);

    QVERIFY(!view.currentIndex().isValid());
    QRect rect = view.visualRect(item0.index());
    //we click on the decoration
    QTest::mouseClick(view.viewport(), Qt::LeftButton, 0, rect.topLeft()+QPoint(-rect.left()/2,rect.height()/2));
    QVERIFY(!view.currentIndex().isValid());
    QVERIFY(view.isExpanded(item0.index()));

    rect = view.visualRect(item1.index());
    //the item has no decoration, it should get selected
    QTest::mouseClick(view.viewport(), Qt::LeftButton, 0, rect.topLeft()+QPoint(-rect.left()/2,rect.height()/2));
    QCOMPARE(view.currentIndex(), item1.index());
}

void tst_QTreeView::task246536_scrollbarsNotWorking()
{
    struct MyObject : public QObject
    {
        MyObject() : count(0)
        {
        }

        bool eventFilter(QObject*, QEvent *e)
        {
            if (e->type() == QEvent::Paint)
                count++;

            return false;
        }

        int count;
    };
    QTreeView tree;
    MyObject o;
    tree.viewport()->installEventFilter(&o);
    QStandardItemModel model;
    tree.setModel(&model);
    tree.show();
    QTest::qWait(100);
    QList<QStandardItem *> items;
    for(int i=0; i<100; ++i){
        items << new QStandardItem(QString::fromLatin1("item %1").arg(i));
    }
    model.invisibleRootItem()->appendColumn(items);
    QTest::qWait(100);
    o.count = 0;
    tree.verticalScrollBar()->setValue(50);
    QTest::qWait(100);
    QTRY_VERIFY(o.count > 0);
}

void tst_QTreeView::task250683_wrongSectionSize()
{
    QDirModel model;
    QTreeView treeView;
    treeView.header()->setResizeMode(QHeaderView::ResizeToContents);
    treeView.setModel(&model);
    treeView.setColumnHidden(2, true);
    treeView.setColumnHidden(3, true);

    treeView.show();
    QTest::qWait(100);

    QCOMPARE(treeView.header()->sectionSize(0) + treeView.header()->sectionSize(1), treeView.viewport()->width());
}

void tst_QTreeView::task239271_addRowsWithFirstColumnHidden()
{
    class MyDelegate : public QStyledItemDelegate
    {
    public:
        void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index ) const
        {
            paintedIndexes << index;
            QStyledItemDelegate::paint(painter, option, index);
        }

        mutable QSet<QModelIndex> paintedIndexes;
    };

    QTreeView view;
    QStandardItemModel model;
    view.setModel(&model);
    MyDelegate delegate;
    view.setItemDelegate(&delegate);
    QStandardItem root0("root0"), root1("root1");
    model.invisibleRootItem()->appendRow(QList<QStandardItem*>() << &root0 << &root1);
    QStandardItem sub0("sub0"), sub00("sub00");
    root0.appendRow(QList<QStandardItem*>() << &sub0 << &sub00);
    view.expand(root0.index());

    view.hideColumn(0);
    view.show();
    QTest::qWait(200);
    delegate.paintedIndexes.clear();
    QStandardItem sub1("sub1"), sub11("sub11");
    root0.appendRow(QList<QStandardItem*>() << &sub1 << &sub11);

    QTest::qWait(20);
    //items in the 2nd column should have been painted
    QTRY_VERIFY(!delegate.paintedIndexes.isEmpty());
    QVERIFY(delegate.paintedIndexes.contains(sub00.index()));
    QVERIFY(delegate.paintedIndexes.contains(sub11.index()));
}

void tst_QTreeView::task254234_proxySort()
{
    //based on tst_QTreeView::sortByColumn
    // it used not to work when setting the source of a proxy after enabling sorting
    QTreeView view;
    QStandardItemModel model(4,2);
    model.setItem(0,0,new QStandardItem("b"));
    model.setItem(1,0,new QStandardItem("d"));
    model.setItem(2,0,new QStandardItem("c"));
    model.setItem(3,0,new QStandardItem("a"));
    model.setItem(0,1,new QStandardItem("e"));
    model.setItem(1,1,new QStandardItem("g"));
    model.setItem(2,1,new QStandardItem("h"));
    model.setItem(3,1,new QStandardItem("f"));

    view.sortByColumn(1);
    view.setSortingEnabled(true);

    QSortFilterProxyModel proxy;
    proxy.setDynamicSortFilter(true);
    view.setModel(&proxy);
    proxy.setSourceModel(&model);
    QCOMPARE(view.header()->sortIndicatorSection(), 1);
    QCOMPARE(view.model()->data(view.model()->index(0,1)).toString(), QString::fromLatin1("h"));
    QCOMPARE(view.model()->data(view.model()->index(1,1)).toString(), QString::fromLatin1("g"));
}

class TreeView : public QTreeView
{
    Q_OBJECT
public slots:
    void handleSelectionChanged()
    {
        //let's select the last item
        QModelIndex idx = model()->index(0, 0);
        selectionModel()->select(QItemSelection(idx, idx), QItemSelectionModel::Select);
        disconnect(selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)), this, SLOT(handleSelectionChanged()));
    }
};

void tst_QTreeView::task248022_changeSelection()
{
    //we check that changing the selection between the mouse press and the mouse release
    //works correctly
    TreeView view;
    QStringList list = QStringList() << "1" << "2";
    QStringListModel model(list);
    view.setSelectionMode(QAbstractItemView::ExtendedSelection);
    view.setModel(&model);
    view.connect(view.selectionModel(), SIGNAL(selectionChanged(QItemSelection, QItemSelection)), SLOT(handleSelectionChanged()));
    QTest::mouseClick(view.viewport(), Qt::LeftButton, 0, view.visualRect(model.index(1)).center());
    QCOMPARE(view.selectionModel()->selectedIndexes().count(), list.count());
}

void tst_QTreeView::task245654_changeModelAndExpandAll()
{
    QTreeView view;
    QStandardItemModel *model = new QStandardItemModel;
    QStandardItem *top = new QStandardItem("top");
    QStandardItem *sub = new QStandardItem("sub");
    top->appendRow(sub);
    model->appendRow(top);
    view.setModel(model);
    view.expandAll();
    QApplication::processEvents();
    QVERIFY(view.isExpanded(top->index()));

    //now let's try to delete the model
    //then repopulate and expand again
    delete model;
    model = new QStandardItemModel;
    top = new QStandardItem("top");
    sub = new QStandardItem("sub");
    top->appendRow(sub);
    model->appendRow(top);
    view.setModel(model);
    view.expandAll();
    QApplication::processEvents();
    QVERIFY(view.isExpanded(top->index()));

}



QTEST_MAIN(tst_QTreeView)
#include "tst_qtreeview.moc"