Merge branch 'historyKDE' into develop

1 files changed, 3 insertions, 921 deletions

diff --git a/src/history.cpp b/src/history.cpp
index da13b3d0..574b0cf2 100644
--- a/src/history.cpp
+++ b/src/history.cpp
@@ -34,6 +34,7 @@
 #include "rekonq.h"
 
 // Local Includes
+#include "historymodels.h"
 #include "autosaver.h"
 #include "application.h"
 
@@ -97,12 +98,14 @@ QList<HistoryItem> HistoryManager::history() const
 }
 
 
+// TODO port to KDE history
 bool HistoryManager::historyContains(const QString &url) const
 {
     return m_historyFilterModel->historyContains(url);
 }
 
 
+// TODO port to KDE history
 void HistoryManager::addHistoryEntry(const QString &url)
 {
     QUrl cleanUrl(url);
@@ -418,924 +421,3 @@ void HistoryManager::save()
     }
     m_lastSavedUrl = m_history.value(0).url;
 }
-
-
-// --------------------------------------------------------------------------------------------------------------------------
-
-
-HistoryModel::HistoryModel(HistoryManager *history, QObject *parent)
-        : QAbstractTableModel(parent)
-        , m_history(history)
-{
-    Q_ASSERT(m_history);
-    connect(m_history, SIGNAL(historyReset()), this, SLOT(historyReset()));
-    connect(m_history, SIGNAL(entryRemoved(const HistoryItem &)), this, SLOT(historyReset()));
-    connect(m_history, SIGNAL(entryAdded(const HistoryItem &)), this, SLOT(entryAdded()));
-    connect(m_history, SIGNAL(entryUpdated(int)), this, SLOT(entryUpdated(int)));
-}
-
-
-void HistoryModel::historyReset()
-{
-    reset();
-}
-
-
-void HistoryModel::entryAdded()
-{
-    beginInsertRows(QModelIndex(), 0, 0);
-    endInsertRows();
-}
-
-
-void HistoryModel::entryUpdated(int offset)
-{
-    QModelIndex idx = index(offset, 0);
-    emit dataChanged(idx, idx);
-}
-
-
-QVariant HistoryModel::headerData(int section, Qt::Orientation orientation, int role) const
-{
-    if (orientation == Qt::Horizontal
-            && role == Qt::DisplayRole)
-    {
-        switch (section)
-        {
-        case 0: return i18n("Title");
-        case 1: return i18n("Address");
-        }
-    }
-    return QAbstractTableModel::headerData(section, orientation, role);
-}
-
-
-QVariant HistoryModel::data(const QModelIndex &index, int role) const
-{
-    QList<HistoryItem> lst = m_history->history();
-    if (index.row() < 0 || index.row() >= lst.size())
-        return QVariant();
-
-    const HistoryItem &item = lst.at(index.row());
-    switch (role)
-    {
-    case DateTimeRole:
-        return item.dateTime;
-    case DateRole:
-        return item.dateTime.date();
-    case UrlRole:
-        return QUrl(item.url);
-    case UrlStringRole:
-        return item.url;
-    case Qt::DisplayRole:
-    case Qt::EditRole:
-    {
-        switch (index.column())
-        {
-        case 0:
-            // when there is no title try to generate one from the url
-            if (item.title.isEmpty())
-            {
-                QString page = QFileInfo(QUrl(item.url).path()).fileName();
-                if (!page.isEmpty())
-                    return page;
-                return item.url;
-            }
-            return item.title;
-        case 1:
-            return item.url;
-        }
-    }
-    case Qt::DecorationRole:
-        if (index.column() == 0)
-        {
-            return Application::icon(item.url);
-        }
-    }
-    return QVariant();
-}
-
-
-int HistoryModel::columnCount(const QModelIndex &parent) const
-{
-    return (parent.isValid()) ? 0 : 2;
-}
-
-
-int HistoryModel::rowCount(const QModelIndex &parent) const
-{
-    return (parent.isValid()) ? 0 : m_history->history().count();
-}
-
-
-bool HistoryModel::removeRows(int row, int count, const QModelIndex &parent)
-{
-    if (parent.isValid())
-        return false;
-    int lastRow = row + count - 1;
-    beginRemoveRows(parent, row, lastRow);
-    QList<HistoryItem> lst = m_history->history();
-    for (int i = lastRow; i >= row; --i)
-        lst.removeAt(i);
-    disconnect(m_history, SIGNAL(historyReset()), this, SLOT(historyReset()));
-    m_history->setHistory(lst);
-    connect(m_history, SIGNAL(historyReset()), this, SLOT(historyReset()));
-    endRemoveRows();
-    return true;
-}
-
-
-
-//  -----------------------------------------------------------------------------------------------
-
-
-#define MOVEDROWS 20
-
-
-/*
-    Maps the first bunch of items of the source model to the root
-*/
-HistoryMenuModel::HistoryMenuModel(HistoryTreeModel *sourceModel, QObject *parent)
-        : QAbstractProxyModel(parent)
-        , m_treeModel(sourceModel)
-{
-    setSourceModel(sourceModel);
-}
-
-
-int HistoryMenuModel::bumpedRows() const
-{
-    QModelIndex first = m_treeModel->index(0, 0);
-    if (!first.isValid())
-        return 0;
-    return qMin(m_treeModel->rowCount(first), MOVEDROWS);
-}
-
-
-int HistoryMenuModel::columnCount(const QModelIndex &parent) const
-{
-    return m_treeModel->columnCount(mapToSource(parent));
-}
-
-
-int HistoryMenuModel::rowCount(const QModelIndex &parent) const
-{
-    if (parent.column() > 0)
-        return 0;
-
-    if (!parent.isValid())
-    {
-        int folders = sourceModel()->rowCount();
-        int bumpedItems = bumpedRows();
-        if (bumpedItems <= MOVEDROWS
-                && bumpedItems == sourceModel()->rowCount(sourceModel()->index(0, 0)))
-            --folders;
-        return bumpedItems + folders;
-    }
-
-    if (parent.internalId() == -1)
-    {
-        if (parent.row() < bumpedRows())
-            return 0;
-    }
-
-    QModelIndex idx = mapToSource(parent);
-    int defaultCount = sourceModel()->rowCount(idx);
-    if (idx == sourceModel()->index(0, 0))
-        return defaultCount - bumpedRows();
-    return defaultCount;
-}
-
-
-QModelIndex HistoryMenuModel::mapFromSource(const QModelIndex &sourceIndex) const
-{
-    // currently not used or autotested
-    Q_ASSERT(false);
-    int sr = m_treeModel->mapToSource(sourceIndex).row();
-    return createIndex(sourceIndex.row(), sourceIndex.column(), sr);
-}
-
-
-QModelIndex HistoryMenuModel::mapToSource(const QModelIndex &proxyIndex) const
-{
-    if (!proxyIndex.isValid())
-        return QModelIndex();
-
-    if (proxyIndex.internalId() == -1)
-    {
-        int bumpedItems = bumpedRows();
-        if (proxyIndex.row() < bumpedItems)
-            return m_treeModel->index(proxyIndex.row(), proxyIndex.column(), m_treeModel->index(0, 0));
-        if (bumpedItems <= MOVEDROWS && bumpedItems == sourceModel()->rowCount(m_treeModel->index(0, 0)))
-            --bumpedItems;
-        return m_treeModel->index(proxyIndex.row() - bumpedItems, proxyIndex.column());
-    }
-
-    QModelIndex historyIndex = m_treeModel->sourceModel()->index(proxyIndex.internalId(), proxyIndex.column());
-    QModelIndex treeIndex = m_treeModel->mapFromSource(historyIndex);
-    return treeIndex;
-}
-
-
-QModelIndex HistoryMenuModel::index(int row, int column, const QModelIndex &parent) const
-{
-    if (row < 0
-            || column < 0 || column >= columnCount(parent)
-            || parent.column() > 0)
-        return QModelIndex();
-    if (!parent.isValid())
-        return createIndex(row, column, -1);
-
-    QModelIndex treeIndexParent = mapToSource(parent);
-
-    int bumpedItems = 0;
-    if (treeIndexParent == m_treeModel->index(0, 0))
-        bumpedItems = bumpedRows();
-    QModelIndex treeIndex = m_treeModel->index(row + bumpedItems, column, treeIndexParent);
-    QModelIndex historyIndex = m_treeModel->mapToSource(treeIndex);
-    int historyRow = historyIndex.row();
-    if (historyRow == -1)
-        historyRow = treeIndex.row();
-    return createIndex(row, column, historyRow);
-}
-
-
-QModelIndex HistoryMenuModel::parent(const QModelIndex &index) const
-{
-    int offset = index.internalId();
-    if (offset == -1 || !index.isValid())
-        return QModelIndex();
-
-    QModelIndex historyIndex = m_treeModel->sourceModel()->index(index.internalId(), 0);
-    QModelIndex treeIndex = m_treeModel->mapFromSource(historyIndex);
-    QModelIndex treeIndexParent = treeIndex.parent();
-
-    int sr = m_treeModel->mapToSource(treeIndexParent).row();
-    int bumpedItems = bumpedRows();
-    if (bumpedItems <= MOVEDROWS && bumpedItems == sourceModel()->rowCount(sourceModel()->index(0, 0)))
-        --bumpedItems;
-    return createIndex(bumpedItems + treeIndexParent.row(), treeIndexParent.column(), sr);
-}
-
-
-// --------------------------------------------------------------------------------------------------------------
-
-
-TreeProxyModel::TreeProxyModel(QObject *parent) : QSortFilterProxyModel(parent)
-{
-    setSortRole(HistoryModel::DateTimeRole);
-    setFilterCaseSensitivity(Qt::CaseInsensitive);
-}
-
-
-bool TreeProxyModel::filterAcceptsRow(int source_row, const QModelIndex &source_parent) const
-{
-    if (!source_parent.isValid())
-        return true;
-    return QSortFilterProxyModel::filterAcceptsRow(source_row, source_parent);
-}
-
-
-// -------------------------------------------------------------------------------------------------------------
-
-
-HistoryFilterModel::HistoryFilterModel(QAbstractItemModel *sourceModel, QObject *parent)
-        : QAbstractProxyModel(parent),
-        m_loaded(false)
-{
-    setSourceModel(sourceModel);
-}
-
-
-int HistoryFilterModel::historyLocation(const QString &url) const
-{
-    load();
-    if (!m_historyHash.contains(url))
-        return 0;
-    return sourceModel()->rowCount() - m_historyHash.value(url);
-}
-
-
-QVariant HistoryFilterModel::data(const QModelIndex &index, int role) const
-{
-    return QAbstractProxyModel::data(index, role);
-}
-
-
-void HistoryFilterModel::setSourceModel(QAbstractItemModel *newSourceModel)
-{
-    if (sourceModel())
-    {
-        disconnect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        disconnect(sourceModel(), SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),
-                   this, SLOT(dataChanged(const QModelIndex &, const QModelIndex &)));
-        disconnect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                   this, SLOT(sourceRowsInserted(const QModelIndex &, int, int)));
-        disconnect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                   this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    }
-
-    QAbstractProxyModel::setSourceModel(newSourceModel);
-
-    if (sourceModel())
-    {
-        m_loaded = false;
-        connect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        connect(sourceModel(), SIGNAL(dataChanged(const QModelIndex &, const QModelIndex &)),
-                this, SLOT(sourceDataChanged(const QModelIndex &, const QModelIndex &)));
-        connect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                this, SLOT(sourceRowsInserted(const QModelIndex &, int, int)));
-        connect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    }
-}
-
-
-void HistoryFilterModel::sourceDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
-{
-    emit dataChanged(mapFromSource(topLeft), mapFromSource(bottomRight));
-}
-
-
-QVariant HistoryFilterModel::headerData(int section, Qt::Orientation orientation, int role) const
-{
-    return sourceModel()->headerData(section, orientation, role);
-}
-
-
-void HistoryFilterModel::sourceReset()
-{
-    m_loaded = false;
-    reset();
-}
-
-
-int HistoryFilterModel::rowCount(const QModelIndex &parent) const
-{
-    load();
-    if (parent.isValid())
-        return 0;
-    return m_historyHash.count();
-}
-
-
-int HistoryFilterModel::columnCount(const QModelIndex &parent) const
-{
-    return (parent.isValid()) ? 0 : 2;
-}
-
-
-QModelIndex HistoryFilterModel::mapToSource(const QModelIndex &proxyIndex) const
-{
-    load();
-    int sourceRow = sourceModel()->rowCount() - proxyIndex.internalId();
-    return sourceModel()->index(sourceRow, proxyIndex.column());
-}
-
-
-QModelIndex HistoryFilterModel::mapFromSource(const QModelIndex &sourceIndex) const
-{
-    load();
-    QString url = sourceIndex.data(HistoryModel::UrlStringRole).toString();
-    if (!m_historyHash.contains(url))
-        return QModelIndex();
-
-    // This can be done in a binary search, but we can't use qBinary find
-    // because it can't take: qBinaryFind(m_sourceRow.end(), m_sourceRow.begin(), v);
-    // so if this is a performance bottlneck then convert to binary search, until then
-    // the cleaner/easier to read code wins the day.
-    int realRow = -1;
-    int sourceModelRow = sourceModel()->rowCount() - sourceIndex.row();
-
-    for (int i = 0; i < m_sourceRow.count(); ++i)
-    {
-        if (m_sourceRow.at(i) == sourceModelRow)
-        {
-            realRow = i;
-            break;
-        }
-    }
-    if (realRow == -1)
-        return QModelIndex();
-
-    return createIndex(realRow, sourceIndex.column(), sourceModel()->rowCount() - sourceIndex.row());
-}
-
-
-QModelIndex HistoryFilterModel::index(int row, int column, const QModelIndex &parent) const
-{
-    load();
-    if (row < 0 || row >= rowCount(parent)
-            || column < 0 || column >= columnCount(parent))
-        return QModelIndex();
-
-    return createIndex(row, column, m_sourceRow[row]);
-}
-
-
-QModelIndex HistoryFilterModel::parent(const QModelIndex &) const
-{
-    return QModelIndex();
-}
-
-
-void HistoryFilterModel::load() const
-{
-    if (m_loaded)
-        return;
-    m_sourceRow.clear();
-    m_historyHash.clear();
-    m_historyHash.reserve(sourceModel()->rowCount());
-    for (int i = 0; i < sourceModel()->rowCount(); ++i)
-    {
-        QModelIndex idx = sourceModel()->index(i, 0);
-        QString url = idx.data(HistoryModel::UrlStringRole).toString();
-        if (!m_historyHash.contains(url))
-        {
-            m_sourceRow.append(sourceModel()->rowCount() - i);
-            m_historyHash[url] = sourceModel()->rowCount() - i;
-        }
-    }
-    m_loaded = true;
-}
-
-
-void HistoryFilterModel::sourceRowsInserted(const QModelIndex &parent, int start, int end)
-{
-    Q_ASSERT(start == end && start == 0);
-    Q_UNUSED(end);
-    if (!m_loaded)
-        return;
-    QModelIndex idx = sourceModel()->index(start, 0, parent);
-    QString url = idx.data(HistoryModel::UrlStringRole).toString();
-    if (m_historyHash.contains(url))
-    {
-        int sourceRow = sourceModel()->rowCount() - m_historyHash[url];
-        int realRow = mapFromSource(sourceModel()->index(sourceRow, 0)).row();
-        beginRemoveRows(QModelIndex(), realRow, realRow);
-        m_sourceRow.removeAt(realRow);
-        m_historyHash.remove(url);
-        endRemoveRows();
-    }
-    beginInsertRows(QModelIndex(), 0, 0);
-    m_historyHash.insert(url, sourceModel()->rowCount() - start);
-    m_sourceRow.insert(0, sourceModel()->rowCount());
-    endInsertRows();
-}
-
-
-void HistoryFilterModel::sourceRowsRemoved(const QModelIndex &, int start, int end)
-{
-    Q_UNUSED(start);
-    Q_UNUSED(end);
-    sourceReset();
-}
-
-
-/*
-    Removing a continuous block of rows will remove filtered rows too as this is
-    the users intention.
-*/
-bool HistoryFilterModel::removeRows(int row, int count, const QModelIndex &parent)
-{
-    if (row < 0 || count <= 0 || row + count > rowCount(parent) || parent.isValid())
-        return false;
-    int lastRow = row + count - 1;
-    disconnect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-               this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    beginRemoveRows(parent, row, lastRow);
-    int oldCount = rowCount();
-    int start = sourceModel()->rowCount() - m_sourceRow.value(row);
-    int end = sourceModel()->rowCount() - m_sourceRow.value(lastRow);
-    sourceModel()->removeRows(start, end - start + 1);
-    endRemoveRows();
-    connect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-            this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    m_loaded = false;
-    if (oldCount - count != rowCount())
-        reset();
-    return true;
-}
-
-
-// ------------------------------------------------------------------------------------------------------
-
-
-HistoryCompletionModel::HistoryCompletionModel(QObject *parent)
-        : QAbstractProxyModel(parent)
-{
-}
-
-
-QVariant HistoryCompletionModel::data(const QModelIndex &index, int role) const
-{
-    if (sourceModel()
-            && (role == Qt::EditRole || role == Qt::DisplayRole)
-            && index.isValid())
-    {
-        QModelIndex idx = mapToSource(index);
-        idx = idx.sibling(idx.row(), 1);
-        QString urlString = idx.data(HistoryModel::UrlStringRole).toString();
-        if (index.row() % 2)
-        {
-            QUrl url = urlString;
-            QString s = url.toString(QUrl::RemoveScheme
-                                     | QUrl::RemoveUserInfo
-                                     | QUrl::StripTrailingSlash);
-            return s.mid(2);  // strip // from the front
-        }
-        return urlString;
-    }
-    return QAbstractProxyModel::data(index, role);
-}
-
-
-int HistoryCompletionModel::rowCount(const QModelIndex &parent) const
-{
-    return (parent.isValid() || !sourceModel()) ? 0 : sourceModel()->rowCount(parent) * 2;
-}
-
-
-int HistoryCompletionModel::columnCount(const QModelIndex &parent) const
-{
-    return (parent.isValid()) ? 0 : 1;
-}
-
-
-QModelIndex HistoryCompletionModel::mapFromSource(const QModelIndex &sourceIndex) const
-{
-    int row = sourceIndex.row() * 2;
-    return index(row, sourceIndex.column());
-}
-
-
-QModelIndex HistoryCompletionModel::mapToSource(const QModelIndex &proxyIndex) const
-{
-    if (!sourceModel())
-        return QModelIndex();
-    int row = proxyIndex.row() / 2;
-    return sourceModel()->index(row, proxyIndex.column());
-}
-
-
-QModelIndex HistoryCompletionModel::index(int row, int column, const QModelIndex &parent) const
-{
-    if (row < 0 || row >= rowCount(parent)
-            || column < 0 || column >= columnCount(parent))
-        return QModelIndex();
-    return createIndex(row, column, 0);
-}
-
-
-QModelIndex HistoryCompletionModel::parent(const QModelIndex &) const
-{
-    return QModelIndex();
-}
-
-
-void HistoryCompletionModel::setSourceModel(QAbstractItemModel *newSourceModel)
-{
-    if (sourceModel())
-    {
-        disconnect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        disconnect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                   this, SLOT(sourceReset()));
-        disconnect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                   this, SLOT(sourceReset()));
-    }
-
-    QAbstractProxyModel::setSourceModel(newSourceModel);
-
-    if (newSourceModel)
-    {
-        connect(newSourceModel, SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        connect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                this, SLOT(sourceReset()));
-        connect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                this, SLOT(sourceReset()));
-    }
-
-    reset();
-}
-
-
-void HistoryCompletionModel::sourceReset()
-{
-    reset();
-}
-
-
-// ------------------------------------------------------------------------------------------------------
-
-
-HistoryTreeModel::HistoryTreeModel(QAbstractItemModel *sourceModel, QObject *parent)
-        : QAbstractProxyModel(parent)
-{
-    setSourceModel(sourceModel);
-}
-
-
-QVariant HistoryTreeModel::headerData(int section, Qt::Orientation orientation, int role) const
-{
-    return sourceModel()->headerData(section, orientation, role);
-}
-
-
-QVariant HistoryTreeModel::data(const QModelIndex &index, int role) const
-{
-    if ((role == Qt::EditRole || role == Qt::DisplayRole))
-    {
-        int start = index.internalId();
-        if (start == 0)
-        {
-            int offset = sourceDateRow(index.row());
-            if (index.column() == 0)
-            {
-                QModelIndex idx = sourceModel()->index(offset, 0);
-                QDate date = idx.data(HistoryModel::DateRole).toDate();
-                if (date == QDate::currentDate())
-                    return i18n("Earlier Today");
-                return date.toString(QLatin1String("dddd, MMMM d, yyyy"));
-            }
-            if (index.column() == 1)
-            {
-                return i18np("1 item", "%1 items", rowCount(index.sibling(index.row(), 0)));
-            }
-        }
-    }
-    if (role == Qt::DecorationRole && index.column() == 0 && !index.parent().isValid())
-        return KIcon("view-history");
-    if (role == HistoryModel::DateRole && index.column() == 0 && index.internalId() == 0)
-    {
-        int offset = sourceDateRow(index.row());
-        QModelIndex idx = sourceModel()->index(offset, 0);
-        return idx.data(HistoryModel::DateRole);
-    }
-
-    return QAbstractProxyModel::data(index, role);
-}
-
-
-int HistoryTreeModel::columnCount(const QModelIndex &parent) const
-{
-    return sourceModel()->columnCount(mapToSource(parent));
-}
-
-
-int HistoryTreeModel::rowCount(const QModelIndex &parent) const
-{
-    if (parent.internalId() != 0
-            || parent.column() > 0
-            || !sourceModel())
-        return 0;
-
-    // row count OF dates
-    if (!parent.isValid())
-    {
-        if (!m_sourceRowCache.isEmpty())
-            return m_sourceRowCache.count();
-        QDate currentDate;
-        int rows = 0;
-        int totalRows = sourceModel()->rowCount();
-
-        for (int i = 0; i < totalRows; ++i)
-        {
-            QDate rowDate = sourceModel()->index(i, 0).data(HistoryModel::DateRole).toDate();
-            if (rowDate != currentDate)
-            {
-                m_sourceRowCache.append(i);
-                currentDate = rowDate;
-                ++rows;
-            }
-        }
-        Q_ASSERT(m_sourceRowCache.count() == rows);
-        return rows;
-    }
-
-    // row count FOR a date
-    int start = sourceDateRow(parent.row());
-    int end = sourceDateRow(parent.row() + 1);
-    return (end - start);
-}
-
-
-// Translate the top level date row into the offset where that date starts
-int HistoryTreeModel::sourceDateRow(int row) const
-{
-    if (row <= 0)
-        return 0;
-
-    if (m_sourceRowCache.isEmpty())
-        rowCount(QModelIndex());
-
-    if (row >= m_sourceRowCache.count())
-    {
-        if (!sourceModel())
-            return 0;
-        return sourceModel()->rowCount();
-    }
-    return m_sourceRowCache.at(row);
-}
-
-
-QModelIndex HistoryTreeModel::mapToSource(const QModelIndex &proxyIndex) const
-{
-    int offset = proxyIndex.internalId();
-    if (offset == 0)
-        return QModelIndex();
-    int startDateRow = sourceDateRow(offset - 1);
-    return sourceModel()->index(startDateRow + proxyIndex.row(), proxyIndex.column());
-}
-
-
-QModelIndex HistoryTreeModel::index(int row, int column, const QModelIndex &parent) const
-{
-    if (row < 0
-            || column < 0 || column >= columnCount(parent)
-            || parent.column() > 0)
-        return QModelIndex();
-
-    if (!parent.isValid())
-        return createIndex(row, column, 0);
-    return createIndex(row, column, parent.row() + 1);
-}
-
-
-QModelIndex HistoryTreeModel::parent(const QModelIndex &index) const
-{
-    int offset = index.internalId();
-    if (offset == 0 || !index.isValid())
-        return QModelIndex();
-    return createIndex(offset - 1, 0, 0);
-}
-
-
-bool HistoryTreeModel::hasChildren(const QModelIndex &parent) const
-{
-    QModelIndex grandparent = parent.parent();
-    if (!grandparent.isValid())
-        return true;
-    return false;
-}
-
-
-Qt::ItemFlags HistoryTreeModel::flags(const QModelIndex &index) const
-{
-    if (!index.isValid())
-        return Qt::NoItemFlags;
-    return Qt::ItemIsSelectable | Qt::ItemIsEnabled | Qt::ItemIsDragEnabled;
-}
-
-
-bool HistoryTreeModel::removeRows(int row, int count, const QModelIndex &parent)
-{
-    if (row < 0 || count <= 0 || row + count > rowCount(parent))
-        return false;
-
-    if (parent.isValid())
-    {
-        // removing pages
-        int offset = sourceDateRow(parent.row());
-        return sourceModel()->removeRows(offset + row, count);
-    }
-    else
-    {
-        // removing whole dates
-        for (int i = row + count - 1; i >= row; --i)
-        {
-            QModelIndex dateParent = index(i, 0);
-            int offset = sourceDateRow(dateParent.row());
-            if (!sourceModel()->removeRows(offset, rowCount(dateParent)))
-                return false;
-        }
-    }
-    return true;
-}
-
-
-void HistoryTreeModel::setSourceModel(QAbstractItemModel *newSourceModel)
-{
-    if (sourceModel())
-    {
-        disconnect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        disconnect(sourceModel(), SIGNAL(layoutChanged()), this, SLOT(sourceReset()));
-        disconnect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                   this, SLOT(sourceRowsInserted(const QModelIndex &, int, int)));
-        disconnect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                   this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    }
-
-    QAbstractProxyModel::setSourceModel(newSourceModel);
-
-    if (newSourceModel)
-    {
-        connect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
-        connect(sourceModel(), SIGNAL(layoutChanged()), this, SLOT(sourceReset()));
-        connect(sourceModel(), SIGNAL(rowsInserted(const QModelIndex &, int, int)),
-                this, SLOT(sourceRowsInserted(const QModelIndex &, int, int)));
-        connect(sourceModel(), SIGNAL(rowsRemoved(const QModelIndex &, int, int)),
-                this, SLOT(sourceRowsRemoved(const QModelIndex &, int, int)));
-    }
-
-    reset();
-}
-
-
-void HistoryTreeModel::sourceReset()
-{
-    m_sourceRowCache.clear();
-    reset();
-}
-
-
-void HistoryTreeModel::sourceRowsInserted(const QModelIndex &parent, int start, int end)
-{
-    Q_UNUSED(parent); // Avoid warnings when compiling release
-    Q_ASSERT(!parent.isValid());
-    if (start != 0 || start != end)
-    {
-        m_sourceRowCache.clear();
-        reset();
-        return;
-    }
-
-    m_sourceRowCache.clear();
-    QModelIndex treeIndex = mapFromSource(sourceModel()->index(start, 0));
-    QModelIndex treeParent = treeIndex.parent();
-    if (rowCount(treeParent) == 1)
-    {
-        beginInsertRows(QModelIndex(), 0, 0);
-        endInsertRows();
-    }
-    else
-    {
-        beginInsertRows(treeParent, treeIndex.row(), treeIndex.row());
-        endInsertRows();
-    }
-}
-
-
-QModelIndex HistoryTreeModel::mapFromSource(const QModelIndex &sourceIndex) const
-{
-    if (!sourceIndex.isValid())
-        return QModelIndex();
-
-    if (m_sourceRowCache.isEmpty())
-        rowCount(QModelIndex());
-
-    QList<int>::iterator it;
-    it = qLowerBound(m_sourceRowCache.begin(), m_sourceRowCache.end(), sourceIndex.row());
-    if (*it != sourceIndex.row())
-        --it;
-
-    int dateRow = qMax(0, it - m_sourceRowCache.begin());
-    // FIXME fix crach on history submenu open. BUG:'ASSERT failure in QList<T>::at: "index out of range"'
-    //       it crashes when dateRow == 1
-    // kDebug() << m_sourceRowCache << dateRow;
-    int row = sourceIndex.row() - m_sourceRowCache.at(dateRow);
-    return createIndex(row, sourceIndex.column(), dateRow + 1);
-}
-
-
-void HistoryTreeModel::sourceRowsRemoved(const QModelIndex &parent, int start, int end)
-{
-    Q_UNUSED(parent); // Avoid warnings when compiling release
-    Q_ASSERT(!parent.isValid());
-    if (m_sourceRowCache.isEmpty())
-        return;
-    for (int i = end; i >= start;)
-    {
-        QList<int>::iterator it;
-        it = qLowerBound(m_sourceRowCache.begin(), m_sourceRowCache.end(), i);
-        // playing it safe
-        if (it == m_sourceRowCache.end())
-        {
-            m_sourceRowCache.clear();
-            reset();
-            return;
-        }
-
-        if (*it != i)
-            --it;
-        int row = qMax(0, it - m_sourceRowCache.begin());
-        int offset = m_sourceRowCache[row];
-        QModelIndex dateParent = index(row, 0);
-        // If we can remove all the rows in the date do that and skip over them
-        int rc = rowCount(dateParent);
-        if (i - rc + 1 == offset && start <= i - rc + 1)
-        {
-            beginRemoveRows(QModelIndex(), row, row);
-            m_sourceRowCache.removeAt(row);
-            i -= rc + 1;
-        }
-        else
-        {
-            beginRemoveRows(dateParent, i - offset, i - offset);
-            ++row;
-            --i;
-        }
-        for (int j = row; j < m_sourceRowCache.count(); ++j)
-            --m_sourceRowCache[j];
-        endRemoveRows();
-    }
-}