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history.cpp
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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the demonstration applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "history.h"
#include "autosaver.h"
#include "browserapplication.h"
#include <QtCore/QBuffer>
#include <QtCore/QDir>
#include <QtCore/QFile>
#include <QtCore/QFileInfo>
#include <QtCore/QSettings>
#include <QtCore/QTemporaryFile>
#include <QtCore/QTextStream>
#include <QtCore/QtAlgorithms>
#include <QtGui/QClipboard>
#include <QtGui/QDesktopServices>
#include <QtWidgets/QHeaderView>
#include <QtWidgets/QStyle>
#include "qultralighthistory.h"
#include "qultralightsettings.h"
#include <QtCore/QDebug>
static const unsigned int HISTORY_VERSION = 23;
HistoryManager::HistoryManager(QObject *parent)
: QUltralightHistoryInterface(parent)
, m_saveTimer(new AutoSaver(this))
, m_historyLimit(30)
, m_historyModel(0)
, m_historyFilterModel(0)
, m_historyTreeModel(0)
{
m_expiredTimer.setSingleShot(true);
connect(&m_expiredTimer, SIGNAL(timeout()),
this, SLOT(checkForExpired()));
connect(this, SIGNAL(entryAdded(HistoryItem)),
m_saveTimer, SLOT(changeOccurred()));
connect(this, SIGNAL(entryRemoved(HistoryItem)),
m_saveTimer, SLOT(changeOccurred()));
load();
m_historyModel = new HistoryModel(this, this);
m_historyFilterModel = new HistoryFilterModel(m_historyModel, this);
m_historyTreeModel = new HistoryTreeModel(m_historyFilterModel, this);
// QUltralightHistoryInterface will delete the history manager
QUltralightHistoryInterface::setDefaultInterface(this);
}
HistoryManager::~HistoryManager()
{
m_saveTimer->saveIfNeccessary();
}
QList<HistoryItem> HistoryManager::history() const
{
return m_history;
}
bool HistoryManager::historyContains(const QString &url) const
{
return m_historyFilterModel->historyContains(url);
}
void HistoryManager::addHistoryEntry(const QString &url)
{
QUrl cleanUrl(url);
cleanUrl.setPassword(QString());
cleanUrl.setHost(cleanUrl.host().toLower());
HistoryItem item(cleanUrl.toString(), QDateTime::currentDateTime());
addHistoryItem(item);
}
void HistoryManager::setHistory(const QList<HistoryItem> &history, bool loadedAndSorted)
{
m_history = history;
// verify that it is sorted by date
if (!loadedAndSorted)
qSort(m_history.begin(), m_history.end());
checkForExpired();
if (loadedAndSorted) {
m_lastSavedUrl = m_history.value(0).url;
} else {
m_lastSavedUrl = QString();
m_saveTimer->changeOccurred();
}
emit historyReset();
}
HistoryModel *HistoryManager::historyModel() const
{
return m_historyModel;
}
HistoryFilterModel *HistoryManager::historyFilterModel() const
{
return m_historyFilterModel;
}
HistoryTreeModel *HistoryManager::historyTreeModel() const
{
return m_historyTreeModel;
}
void HistoryManager::checkForExpired()
{
if (m_historyLimit < 0 || m_history.isEmpty())
return;
QDateTime now = QDateTime::currentDateTime();
int nextTimeout = 0;
while (!m_history.isEmpty()) {
QDateTime checkForExpired = m_history.last().dateTime;
checkForExpired.setDate(checkForExpired.date().addDays(m_historyLimit));
if (now.daysTo(checkForExpired) > 7) {
// check at most in a week to prevent int overflows on the timer
nextTimeout = 7 * 86400;
} else {
nextTimeout = now.secsTo(checkForExpired);
}
if (nextTimeout > 0)
break;
HistoryItem item = m_history.takeLast();
// remove from saved file also
m_lastSavedUrl = QString();
emit entryRemoved(item);
}
if (nextTimeout > 0)
m_expiredTimer.start(nextTimeout * 1000);
}
void HistoryManager::addHistoryItem(const HistoryItem &item)
{
QUltralightSettings *globalSettings = QUltralightSettings::globalSettings();
if (globalSettings->testAttribute(QUltralightSettings::PrivateBrowsingEnabled))
return;
m_history.prepend(item);
emit entryAdded(item);
if (m_history.count() == 1)
checkForExpired();
}
void HistoryManager::updateHistoryItem(const QUrl &url, const QString &title)
{
for (int i = 0; i < m_history.count(); ++i) {
if (url == m_history.at(i).url) {
m_history[i].title = title;
m_saveTimer->changeOccurred();
if (m_lastSavedUrl.isEmpty())
m_lastSavedUrl = m_history.at(i).url;
emit entryUpdated(i);
break;
}
}
}
int HistoryManager::historyLimit() const
{
return m_historyLimit;
}
void HistoryManager::setHistoryLimit(int limit)
{
if (m_historyLimit == limit)
return;
m_historyLimit = limit;
checkForExpired();
m_saveTimer->changeOccurred();
}
void HistoryManager::clear()
{
m_history.clear();
m_lastSavedUrl = QString();
m_saveTimer->changeOccurred();
m_saveTimer->saveIfNeccessary();
historyReset();
}
void HistoryManager::loadSettings()
{
// load settings
QSettings settings;
settings.beginGroup(QLatin1String("history"));
m_historyLimit = settings.value(QLatin1String("historyLimit"), 30).toInt();
}
void HistoryManager::load()
{
loadSettings();
QFile historyFile(QStandardPaths::writableLocation(QStandardPaths::DataLocation)
+ QLatin1String("/history"));
if (!historyFile.exists())
return;
if (!historyFile.open(QFile::ReadOnly)) {
qWarning() << "Unable to open history file" << historyFile.fileName();
return;
}
QList<HistoryItem> list;
QDataStream in(&historyFile);
// Double check that the history file is sorted as it is read in
bool needToSort = false;
HistoryItem lastInsertedItem;
QByteArray data;
QDataStream stream;
QBuffer buffer;
stream.setDevice(&buffer);
while (!historyFile.atEnd()) {
in >> data;
buffer.close();
buffer.setBuffer(&data);
buffer.open(QIODevice::ReadOnly);
quint32 ver;
stream >> ver;
if (ver != HISTORY_VERSION)
continue;
HistoryItem item;
stream >> item.url;
stream >> item.dateTime;
stream >> item.title;
if (!item.dateTime.isValid())
continue;
if (item == lastInsertedItem) {
if (lastInsertedItem.title.isEmpty() && !list.isEmpty())
list[0].title = item.title;
continue;
}
if (!needToSort && !list.isEmpty() && lastInsertedItem < item)
needToSort = true;
list.prepend(item);
lastInsertedItem = item;
}
if (needToSort)
qSort(list.begin(), list.end());
setHistory(list, true);
// If we had to sort re-write the whole history sorted
if (needToSort) {
m_lastSavedUrl = QString();
m_saveTimer->changeOccurred();
}
}
void HistoryManager::save()
{
QSettings settings;
settings.beginGroup(QLatin1String("history"));
settings.setValue(QLatin1String("historyLimit"), m_historyLimit);
bool saveAll = m_lastSavedUrl.isEmpty();
int first = m_history.count() - 1;
if (!saveAll) {
// find the first one to save
for (int i = 0; i < m_history.count(); ++i) {
if (m_history.at(i).url == m_lastSavedUrl) {
first = i - 1;
break;
}
}
}
if (first == m_history.count() - 1)
saveAll = true;
QString directory = QStandardPaths::writableLocation(QStandardPaths::DataLocation);
if (directory.isEmpty())
directory = QDir::homePath() + QLatin1String("/.") + QCoreApplication::applicationName();
if (!QFile::exists(directory)) {
QDir dir;
dir.mkpath(directory);
}
QFile historyFile(directory + QLatin1String("/history"));
// When saving everything use a temporary file to prevent possible data loss.
QTemporaryFile tempFile;
tempFile.setAutoRemove(false);
bool open = false;
if (saveAll) {
open = tempFile.open();
} else {
open = historyFile.open(QFile::Append);
}
if (!open) {
qWarning() << "Unable to open history file for saving"
<< (saveAll ? tempFile.fileName() : historyFile.fileName());
return;
}
QDataStream out(saveAll ? &tempFile : &historyFile);
for (int i = first; i >= 0; --i) {
QByteArray data;
QDataStream stream(&data, QIODevice::WriteOnly);
HistoryItem item = m_history.at(i);
stream << HISTORY_VERSION << item.url << item.dateTime << item.title;
out << data;
}
tempFile.close();
if (saveAll) {
if (historyFile.exists() && !historyFile.remove())
qWarning() << "History: error removing old history." << historyFile.errorString();
if (!tempFile.rename(historyFile.fileName()))
qWarning() << "History: error moving new history over old." << tempFile.errorString() << historyFile.fileName();
}
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(HistoryItem)),
this, SLOT(historyReset()));
connect(m_history, SIGNAL(entryAdded(HistoryItem)),
this, SLOT(entryAdded()));
connect(m_history, SIGNAL(entryUpdated(int)),
this, SLOT(entryUpdated(int)));
}
void HistoryModel::historyReset()
{
beginResetModel();
endResetModel();
}
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 tr("Title");
case 1: return tr("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 BrowserApplication::instance()->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 15
/*
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() == quintptr(-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() == quintptr(-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, quintptr(-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);
}
HistoryMenu::HistoryMenu(QWidget *parent)
: ModelMenu(parent)
, m_history(0)
{
connect(this, SIGNAL(activated(QModelIndex)),
this, SLOT(activated(QModelIndex)));
setHoverRole(HistoryModel::UrlStringRole);
}
void HistoryMenu::activated(const QModelIndex &index)
{
emit openUrl(index.data(HistoryModel::UrlRole).toUrl());
}
bool HistoryMenu::prePopulated()
{
if (!m_history) {
m_history = BrowserApplication::historyManager();
m_historyMenuModel = new HistoryMenuModel(m_history->historyTreeModel(), this);
setModel(m_historyMenuModel);
}
// initial actions
for (int i = 0; i < m_initialActions.count(); ++i)
addAction(m_initialActions.at(i));
if (!m_initialActions.isEmpty())
addSeparator();
setFirstSeparator(m_historyMenuModel->bumpedRows());
return false;
}
void HistoryMenu::postPopulated()
{
if (m_history->history().count() > 0)
addSeparator();
QAction *showAllAction = new QAction(tr("Show All History"), this);
connect(showAllAction, SIGNAL(triggered()), this, SLOT(showHistoryDialog()));
addAction(showAllAction);
QAction *clearAction = new QAction(tr("Clear History"), this);
connect(clearAction, SIGNAL(triggered()), m_history, SLOT(clear()));
addAction(clearAction);
}
void HistoryMenu::showHistoryDialog()
{
HistoryDialog *dialog = new HistoryDialog(this);
connect(dialog, SIGNAL(openUrl(QUrl)),
this, SIGNAL(openUrl(QUrl)));
dialog->show();
}
void HistoryMenu::setInitialActions(QList<QAction*> actions)
{
m_initialActions = actions;
for (int i = 0; i < m_initialActions.count(); ++i)
addAction(m_initialActions.at(i));
}
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);
}
HistoryDialog::HistoryDialog(QWidget *parent, HistoryManager *setHistory) : QDialog(parent)
{
HistoryManager *history = setHistory;
if (!history)
history = BrowserApplication::historyManager();
setupUi(this);
tree->setUniformRowHeights(true);
tree->setSelectionBehavior(QAbstractItemView::SelectRows);
tree->setTextElideMode(Qt::ElideMiddle);
QAbstractItemModel *model = history->historyTreeModel();
TreeProxyModel *proxyModel = new TreeProxyModel(this);
connect(search, SIGNAL(textChanged(QString)),
proxyModel, SLOT(setFilterFixedString(QString)));
connect(removeButton, SIGNAL(clicked()), tree, SLOT(removeOne()));
connect(removeAllButton, SIGNAL(clicked()), history, SLOT(clear()));
proxyModel->setSourceModel(model);
tree->setModel(proxyModel);
tree->setExpanded(proxyModel->index(0, 0), true);
tree->setAlternatingRowColors(true);
QFontMetrics fm(font());
int header = fm.width(QLatin1Char('m')) * 40;
tree->header()->resizeSection(0, header);
tree->header()->setStretchLastSection(true);
connect(tree, SIGNAL(activated(QModelIndex)),
this, SLOT(open()));
tree->setContextMenuPolicy(Qt::CustomContextMenu);
connect(tree, SIGNAL(customContextMenuRequested(QPoint)),
this, SLOT(customContextMenuRequested(QPoint)));
}
void HistoryDialog::customContextMenuRequested(const QPoint &pos)
{
QMenu menu;
QModelIndex index = tree->indexAt(pos);
index = index.sibling(index.row(), 0);
if (index.isValid() && !tree->model()->hasChildren(index)) {
menu.addAction(tr("Open"), this, SLOT(open()));
menu.addSeparator();
menu.addAction(tr("Copy"), this, SLOT(copy()));
}
menu.addAction(tr("Delete"), tree, SLOT(removeOne()));
menu.exec(QCursor::pos());
}
void HistoryDialog::open()
{
QModelIndex index = tree->currentIndex();
if (!index.parent().isValid())
return;
emit openUrl(index.data(HistoryModel::UrlRole).toUrl());
}
void HistoryDialog::copy()
{
#ifndef QT_NO_CLIPBOARD
QModelIndex index = tree->currentIndex();
if (!index.parent().isValid())
return;
QString url = index.data(HistoryModel::UrlStringRole).toString();
QClipboard *clipboard = QApplication::clipboard();
clipboard->setText(url);
#endif
}
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(QModelIndex,QModelIndex)),
this, SLOT(dataChanged(QModelIndex,QModelIndex)));
disconnect(sourceModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
this, SLOT(sourceRowsInserted(QModelIndex,int,int)));
disconnect(sourceModel(), SIGNAL(rowsRemoved(QModelIndex,int,int)),
this, SLOT(sourceRowsRemoved(QModelIndex,int,int)));
}
QAbstractProxyModel::setSourceModel(newSourceModel);
if (sourceModel()) {
m_loaded = false;
connect(sourceModel(), SIGNAL(modelReset()), this, SLOT(sourceReset()));
connect(sourceModel(), SIGNAL(dataChanged(QModelIndex,QModelIndex)),
this, SLOT(sourceDataChanged(QModelIndex,QModelIndex)));
connect(sourceModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
this, SLOT(sourceRowsInserted(QModelIndex,int,int)));
connect(sourceModel(), SIGNAL(rowsRemoved(QModelIndex,int,int)),
this, SLOT(sourceRowsRemoved(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;
beginResetModel();
endResetModel();
}
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(QModelIndex,int,int)),
this, SLOT(sourceRowsRemoved(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(QModelIndex,int,int)),
this, SLOT(sourceRowsRemoved(QModelIndex,int,int)));
m_loaded = false;
if (oldCount - count != rowCount()) {
beginResetModel();
endResetModel();
}
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);
}
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(QModelIndex,int,int)),
this, SLOT(sourceReset()));
disconnect(sourceModel(), SIGNAL(rowsRemoved(QModelIndex,int,int)),
this, SLOT(sourceReset()));
}
QAbstractProxyModel::setSourceModel(newSourceModel);
if (newSourceModel) {
connect(newSourceModel, SIGNAL(modelReset()), this, SLOT(sourceReset()));
connect(sourceModel(), SIGNAL(rowsInserted(QModelIndex,int,int)),
this, SLOT(sourceReset()));