transmission/qt/FilterBar.cc

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// This file Copyright © 2012-2022 Mnemosyne LLC.
// It may be used under GPLv2 (SPDX: GPL-2.0-only), GPLv3 (SPDX: GPL-3.0-only),
// or any future license endorsed by Mnemosyne LLC.
// License text can be found in the licenses/ folder.
#include "FilterBar.h"
#include <cstdint> // uint64_t
#include <map>
#include <unordered_map>
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#include <utility>
#include <QHBoxLayout>
#include <QLabel>
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#include <QLineEdit>
#include <QStandardItemModel>
#include "Application.h"
#include "FaviconCache.h"
#include "FilterBarComboBox.h"
#include "FilterBarComboBoxDelegate.h"
#include "Filters.h"
#include "IconCache.h"
#include "Prefs.h"
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#include "Torrent.h"
#include "TorrentFilter.h"
#include "TorrentModel.h"
#include "Utils.h"
enum
{
ACTIVITY_ROLE = FilterBarComboBox::UserRole,
TRACKER_ROLE
};
/***
****
***/
FilterBarComboBox* FilterBar::createActivityCombo()
{
auto* c = new FilterBarComboBox(this);
auto* delegate = new FilterBarComboBoxDelegate(this, c);
c->setItemDelegate(delegate);
auto* model = new QStandardItemModel(this);
auto* row = new QStandardItem(tr("All"));
row->setData(FilterMode::SHOW_ALL, ACTIVITY_ROLE);
model->appendRow(row);
model->appendRow(new QStandardItem); // separator
FilterBarComboBoxDelegate::setSeparator(model, model->index(1, 0));
auto const& icons = IconCache::get();
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("system-run")), tr("Active"));
row->setData(FilterMode::SHOW_ACTIVE, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("go-down")), tr("Downloading"));
row->setData(FilterMode::SHOW_DOWNLOADING, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("go-up")), tr("Seeding"));
row->setData(FilterMode::SHOW_SEEDING, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("media-playback-pause")), tr("Paused"));
row->setData(FilterMode::SHOW_PAUSED, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("dialog-ok")), tr("Finished"));
row->setData(FilterMode::SHOW_FINISHED, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("view-refresh")), tr("Verifying"));
row->setData(FilterMode::SHOW_VERIFYING, ACTIVITY_ROLE);
model->appendRow(row);
row = new QStandardItem(icons.getThemeIcon(QStringLiteral("process-stop")), tr("Error"));
row->setData(FilterMode::SHOW_ERROR, ACTIVITY_ROLE);
model->appendRow(row);
c->setModel(model);
return c;
}
/***
****
***/
namespace
{
QString getCountString(size_t n)
{
return QStringLiteral("%L1").arg(n);
}
Torrent::fields_t constexpr TrackerFields = {
static_cast<uint64_t>(1) << Torrent::TRACKER_STATS,
};
auto constexpr ActivityFields = FilterMode::TorrentFields;
} // namespace
void FilterBar::refreshTrackers()
{
enum
{
ROW_TOTALS = 0,
ROW_SEPARATOR,
ROW_FIRST_TRACKER
};
auto torrents_per_sitename = std::unordered_map<QString, int>{};
for (auto const& tor : torrents_.torrents())
{
for (auto const& sitename : tor->sitenames())
{
++torrents_per_sitename[sitename];
}
}
// update the "All" row
auto const num_trackers = torrents_per_sitename.size();
auto* item = tracker_model_->item(ROW_TOTALS);
item->setData(static_cast<int>(num_trackers), FilterBarComboBox::CountRole);
item->setData(getCountString(num_trackers), FilterBarComboBox::CountStringRole);
auto update_tracker_item = [](QStandardItem* i, auto const& it)
{
auto const& [sitename, count] = *it;
auto const display_name = FaviconCache::getDisplayName(sitename);
auto const icon = trApp->faviconCache().find(sitename);
i->setData(display_name, Qt::DisplayRole);
i->setData(display_name, TRACKER_ROLE);
i->setData(getCountString(static_cast<size_t>(count)), FilterBarComboBox::CountStringRole);
i->setData(icon, Qt::DecorationRole);
i->setData(static_cast<int>(count), FilterBarComboBox::CountRole);
return i;
};
auto new_trackers = std::map<QString, int>(torrents_per_sitename.begin(), torrents_per_sitename.end());
auto old_it = sitename_counts_.cbegin();
auto new_it = new_trackers.cbegin();
auto const old_end = sitename_counts_.cend();
auto const new_end = new_trackers.cend();
bool any_added = false;
int row = ROW_FIRST_TRACKER;
while ((old_it != old_end) || (new_it != new_end))
{
if ((old_it == old_end) || ((new_it != new_end) && (old_it->first > new_it->first)))
{
tracker_model_->insertRow(row, update_tracker_item(new QStandardItem(1), new_it));
any_added = true;
++new_it;
++row;
}
else if ((new_it == new_end) || ((old_it != old_end) && (old_it->first < new_it->first)))
{
tracker_model_->removeRow(row);
++old_it;
}
else // update
{
update_tracker_item(tracker_model_->item(row), new_it);
++old_it;
++new_it;
++row;
}
}
if (any_added) // the one added might match our filter...
{
refreshPref(Prefs::FILTER_TRACKERS);
}
sitename_counts_.swap(new_trackers);
}
FilterBarComboBox* FilterBar::createTrackerCombo(QStandardItemModel* model)
{
auto* c = new FilterBarComboBox(this);
auto* delegate = new FilterBarComboBoxDelegate(this, c);
c->setItemDelegate(delegate);
auto* row = new QStandardItem(tr("All"));
row->setData(QString(), TRACKER_ROLE);
int const count = torrents_.rowCount();
row->setData(count, FilterBarComboBox::CountRole);
row->setData(getCountString(static_cast<size_t>(count)), FilterBarComboBox::CountStringRole);
model->appendRow(row);
model->appendRow(new QStandardItem); // separator
FilterBarComboBoxDelegate::setSeparator(model, model->index(1, 0));
c->setModel(model);
return c;
}
/***
****
***/
FilterBar::FilterBar(Prefs& prefs, TorrentModel const& torrents, TorrentFilter const& filter, QWidget* parent)
: QWidget(parent)
, prefs_(prefs)
, torrents_(torrents)
, filter_(filter)
, is_bootstrapping_(true)
{
auto* h = new QHBoxLayout(this);
h->setContentsMargins(3, 3, 3, 3);
count_label_ = new QLabel(tr("Show:"), this);
h->addWidget(count_label_);
h->addWidget(activity_combo_);
tracker_combo_ = createTrackerCombo(tracker_model_);
h->addWidget(tracker_combo_);
h->addStretch();
line_edit_->setClearButtonEnabled(true);
line_edit_->setPlaceholderText(tr("Search…"));
line_edit_->setMaximumWidth(250);
h->addWidget(line_edit_, 1);
connect(line_edit_, &QLineEdit::textChanged, this, &FilterBar::onTextChanged);
// listen for changes from the other players
connect(&prefs_, &Prefs::changed, this, &FilterBar::refreshPref);
connect(activity_combo_, qOverload<int>(&QComboBox::currentIndexChanged), this, &FilterBar::onActivityIndexChanged);
connect(tracker_combo_, qOverload<int>(&QComboBox::currentIndexChanged), this, &FilterBar::onTrackerIndexChanged);
connect(&torrents_, &TorrentModel::modelReset, this, &FilterBar::recountAllSoon);
connect(&torrents_, &TorrentModel::rowsInserted, this, &FilterBar::recountAllSoon);
connect(&torrents_, &TorrentModel::rowsRemoved, this, &FilterBar::recountAllSoon);
connect(&torrents_, &TorrentModel::torrentsChanged, this, &FilterBar::onTorrentsChanged);
connect(&recount_timer_, &QTimer::timeout, this, &FilterBar::recount);
connect(&trApp->faviconCache(), &FaviconCache::pixmapReady, this, &FilterBar::recountTrackersSoon);
recountAllSoon();
is_bootstrapping_ = false; // NOLINT cppcoreguidelines-prefer-member-initializer
// initialize our state
for (int const key : { Prefs::FILTER_MODE, Prefs::FILTER_TRACKERS })
{
refreshPref(key);
}
}
/***
****
***/
void FilterBar::clear()
{
activity_combo_->setCurrentIndex(0);
tracker_combo_->setCurrentIndex(0);
line_edit_->clear();
}
/***
****
***/
void FilterBar::refreshPref(int key)
{
switch (key)
{
case Prefs::FILTER_MODE:
{
auto const m = prefs_.get<FilterMode>(key);
QAbstractItemModel const* const model = activity_combo_->model();
QModelIndexList indices = model->match(model->index(0, 0), ACTIVITY_ROLE, m.mode());
activity_combo_->setCurrentIndex(indices.isEmpty() ? 0 : indices.first().row());
break;
}
case Prefs::FILTER_TRACKERS:
{
auto const display_name = prefs_.getString(key);
if (auto rows = tracker_model_->findItems(display_name); !rows.isEmpty())
{
tracker_combo_->setCurrentIndex(rows.front()->row());
}
else // hm, we don't seem to have this tracker anymore...
{
bool const is_bootstrapping = tracker_model_->rowCount() <= 2;
if (!is_bootstrapping)
{
prefs_.set(key, QString());
}
}
break;
}
}
}
void FilterBar::onTorrentsChanged(torrent_ids_t const& ids, Torrent::fields_t const& changed_fields)
{
Q_UNUSED(ids)
if ((changed_fields & TrackerFields).any())
{
recountTrackersSoon();
}
if ((changed_fields & ActivityFields).any())
{
recountActivitySoon();
}
}
void FilterBar::onTextChanged(QString const& str)
{
if (!is_bootstrapping_)
{
prefs_.set(Prefs::FILTER_TEXT, str.trimmed());
}
}
void FilterBar::onTrackerIndexChanged(int i)
{
if (!is_bootstrapping_)
{
auto const display_name = tracker_combo_->itemData(i, TRACKER_ROLE).toString();
prefs_.set(Prefs::FILTER_TRACKERS, display_name);
}
}
void FilterBar::onActivityIndexChanged(int i)
{
if (!is_bootstrapping_)
{
auto const mode = FilterMode(activity_combo_->itemData(i, ACTIVITY_ROLE).toInt());
prefs_.set(Prefs::FILTER_MODE, mode);
}
}
/***
****
***/
void FilterBar::recountSoon(Pending const& fields)
{
pending_ |= fields;
if (!recount_timer_.isActive())
{
recount_timer_.setSingleShot(true);
recount_timer_.start(800);
}
}
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void FilterBar::recount()
{
QAbstractItemModel* model = activity_combo_->model();
decltype(pending_) pending = {};
std::swap(pending_, pending);
if (pending[ACTIVITY])
{
auto const torrents_per_mode = filter_.countTorrentsPerMode();
for (int row = 0, n = model->rowCount(); row < n; ++row)
{
auto const index = model->index(row, 0);
auto const mode = index.data(ACTIVITY_ROLE).toInt();
auto const count = torrents_per_mode[mode];
model->setData(index, count, FilterBarComboBox::CountRole);
model->setData(index, getCountString(static_cast<size_t>(count)), FilterBarComboBox::CountStringRole);
}
}
if (pending[TRACKERS])
{
refreshTrackers();
}
}