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+/* ============================================================
+*
+* This file is a part of the rekonq project
+*
+* Copyright (C) 2007-2008 Trolltech ASA. All rights reserved
+* Copyright (C) 2008 Benjamin C. Meyer <ben@meyerhome.net>
+* Copyright (C) 2008-2009 by Andrea Diamantini <adjam7 at gmail dot com>
+*
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License as
+* published by the Free Software Foundation; either version 2 of
+* the License or (at your option) version 3 or any later version
+* accepted by the membership of KDE e.V. (or its successor approved
+* by the membership of KDE e.V.), which shall act as a proxy
+* defined in Section 14 of version 3 of the license.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
+* ============================================================ */
+
+
+// Self Includes
+#include "historymodels.h"
+#include "historymodels.moc"
+
+// Auto Includes
+#include "rekonq.h"
+
+// Local Includes
+#include "application.h"
+
+// KDE Includes
+#include <KDebug>
+#include <KStandardDirs>
+#include <KLocale>
+
+// Qt Includes
+#include <QtCore/QList>
+#include <QtCore/QUrl>
+#include <QtCore/QDate>
+#include <QtCore/QDateTime>
+#include <QtCore/QString>
+#include <QtCore/QFile>
+#include <QtCore/QDataStream>
+#include <QtCore/QBuffer>
+
+#include <QtGui/QClipboard>
+
+
+// generic algorithms
+#include <QtAlgorithms>
+
+
+
+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();
+ }
+}