transmission/qt/FreeSpaceLabel.cc

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// This file Copyright © 2013-2022 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 <QDir>
#include <libtransmission/transmission.h>
#include <libtransmission/variant.h>
#include "Formatter.h"
#include "FreeSpaceLabel.h"
#include "RpcQueue.h"
#include "Session.h"
#include "VariantHelpers.h"
using ::trqt::variant_helpers::dictAdd;
using ::trqt::variant_helpers::dictFind;
namespace
{
int const IntervalMSec = 15000;
} // namespace
FreeSpaceLabel::FreeSpaceLabel(QWidget* parent)
: QLabel(parent)
, timer_(this)
{
timer_.setSingleShot(true);
timer_.setInterval(IntervalMSec);
connect(&timer_, &QTimer::timeout, this, &FreeSpaceLabel::onTimer);
}
void FreeSpaceLabel::setSession(Session& session)
{
if (session_ == &session)
{
return;
}
session_ = &session;
onTimer();
}
void FreeSpaceLabel::setPath(QString const& path)
{
if (path_ != path)
{
setText(tr("<i>Calculating Free Space…</i>"));
path_ = path;
onTimer();
}
}
void FreeSpaceLabel::onTimer()
{
timer_.stop();
if (session_ == nullptr || path_.isEmpty())
{
return;
}
tr_variant args;
tr_variantInitDict(&args, 1);
dictAdd(&args, TR_KEY_path, path_);
auto* q = new RpcQueue(this);
q->add([this, &args]() { return session_->exec("free-space", &args); });
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q->add(
[this](RpcResponse const& r)
{
// update the label
if (auto const bytes = dictFind<int64_t>(r.args.get(), TR_KEY_size_bytes); bytes && *bytes > 1)
{
setText(tr("%1 free").arg(Formatter::get().sizeToString(*bytes)));
}
else
{
setText(QString());
}
// update the tooltip
auto const path = dictFind<QString>(r.args.get(), TR_KEY_path);
setToolTip(QDir::toNativeSeparators(path.value_or(QString{})));
timer_.start();
});
q->run();
}