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/*
* SPDX-FileCopyrightText: 2010 Jonathan Thomas <echidnaman@kubuntu.org>
* SPDX-FileCopyrightText: 2012 Aleix Pol Gonzalez <aleixpol@blue-systems.com>
*
* SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only OR LicenseRef-KDE-Accepted-GPL
*/
#include "TransactionListener.h"
#include "../resources/AbstractResource.h"
#include "TransactionModel.h"
#include "libdiscover_debug.h"
#include <QMetaProperty>
TransactionListener::TransactionListener(QObject *parent)
: QObject(parent)
, m_resource(nullptr)
, m_transaction(nullptr)
{
connect(TransactionModel::global(), &TransactionModel::transactionAdded, this, &TransactionListener::transactionAdded);
}
void TransactionListener::cancel()
{
if (!isCancellable()) {
return;
}
m_transaction->cancel();
}
bool TransactionListener::isCancellable() const
{
return m_transaction && m_transaction->isCancellable();
}
bool TransactionListener::isActive() const
{
return m_transaction && m_transaction->status() != Transaction::SetupStatus;
}
QString TransactionListener::statusText() const
{
QModelIndex index = TransactionModel::global()->indexOf(m_resource);
return index.data(TransactionModel::StatusTextRole).toString();
}
void TransactionListener::setResource(AbstractResource *resource)
{
setResourceInternal(resource);
// Catch already-started transactions
setTransaction(TransactionModel::global()->transactionFromResource(resource));
}
void TransactionListener::setResourceInternal(AbstractResource *resource)
{
if (m_resource == resource) {
return;
}
m_resource = resource;
Q_EMIT resourceChanged();
}
void TransactionListener::transactionAdded(Transaction *trans)
{
if (trans->resource() != m_resource) {
return;
}
setTransaction(trans);
}
class CheckChange
{
public:
CheckChange(QObject *obj, const QByteArray &prop)
: m_object(obj)
, m_prop(obj->metaObject()->property(obj->metaObject()->indexOfProperty(prop.constData())))
, m_oldValue(m_prop.read(obj))
{
Q_ASSERT(obj->metaObject()->indexOfProperty(prop.constData()) >= 0);
}
~CheckChange()
{
const QVariant newValue = m_prop.read(m_object);
if (newValue != m_oldValue) {
QMetaMethod m = m_prop.notifySignal();
m.invoke(m_object, Qt::DirectConnection);
}
}
private:
QObject *m_object;
QMetaProperty m_prop;
QVariant m_oldValue;
};
void TransactionListener::setTransaction(Transaction *trans)
{
if (m_transaction == trans) {
return;
}
if (m_transaction) {
disconnect(m_transaction, nullptr, this, nullptr);
}
CheckChange change1(this, "isCancellable");
CheckChange change2(this, "isActive");
CheckChange change3(this, "statusText");
CheckChange change4(this, "progress");
m_transaction = trans;
if (m_transaction) {
connect(m_transaction, &Transaction::cancellableChanged, this, &TransactionListener::cancellableChanged);
connect(m_transaction, &Transaction::statusChanged, this, &TransactionListener::transactionStatusChanged);
connect(m_transaction, &Transaction::progressChanged, this, &TransactionListener::progressChanged);
connect(m_transaction, &QObject::destroyed, this, [this]() {
qCDebug(LIBDISCOVER_LOG) << "destroyed transaction before finishing";
setTransaction(nullptr);
});
setResourceInternal(trans->resource());
}
Q_EMIT transactionChanged(trans);
}
void TransactionListener::transactionStatusChanged(Transaction::Status status)
{
switch (status) {
case Transaction::CancelledStatus:
setTransaction(nullptr);
Q_EMIT cancelled();
break;
case Transaction::DoneWithErrorStatus:
case Transaction::DoneStatus:
setTransaction(nullptr);
break;
default:
break;
}
Q_EMIT statusTextChanged();
}
int TransactionListener::progress() const
{
return m_transaction ? m_transaction->progress() : 0;
}
#include "moc_TransactionListener.cpp"
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