PrismLauncher/launcher/tasks/SequentialTask.cpp

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#include "SequentialTask.h"
SequentialTask::SequentialTask(QObject* parent, const QString& task_name) : Task(parent), m_name(task_name), m_currentIndex(-1) {}
SequentialTask::~SequentialTask()
{
for(auto task : m_queue){
if(task)
task->deleteLater();
}
}
auto SequentialTask::getStepProgress() const -> qint64
{
return m_stepProgress;
}
auto SequentialTask::getStepTotalProgress() const -> qint64
{
return m_stepTotalProgress;
}
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void SequentialTask::addTask(Task::Ptr task)
{
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m_queue.append(task);
}
void SequentialTask::executeTask()
{
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m_currentIndex = -1;
startNext();
}
bool SequentialTask::abort()
{
if(m_currentIndex == -1 || m_currentIndex >= m_queue.size()) {
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if(m_currentIndex == -1) {
// Don't call emitAborted() here, we want to bypass the 'is the task running' check
emit aborted();
emit finished();
}
m_queue.clear();
return true;
}
bool succeeded = m_queue[m_currentIndex]->abort();
m_queue.clear();
if(succeeded)
emitAborted();
return succeeded;
}
void SequentialTask::startNext()
{
if (m_currentIndex != -1) {
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Task::Ptr previous = m_queue[m_currentIndex];
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disconnect(previous.get(), 0, this, 0);
}
m_currentIndex++;
if (m_queue.isEmpty() || m_currentIndex >= m_queue.size()) {
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emitSucceeded();
return;
}
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Task::Ptr next = m_queue[m_currentIndex];
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connect(next.get(), SIGNAL(failed(QString)), this, SLOT(subTaskFailed(QString)));
connect(next.get(), SIGNAL(succeeded()), this, SLOT(startNext()));
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connect(next.get(), SIGNAL(status(QString)), this, SLOT(subTaskStatus(QString)));
connect(next.get(), SIGNAL(stepStatus(QString)), this, SLOT(subTaskStatus(QString)));
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connect(next.get(), SIGNAL(progress(qint64, qint64)), this, SLOT(subTaskProgress(qint64, qint64)));
setStatus(tr("Executing task %1 out of %2").arg(m_currentIndex + 1).arg(m_queue.size()));
setStepStatus(next->isMultiStep() ? next->getStepStatus() : next->getStatus());
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next->start();
}
void SequentialTask::subTaskFailed(const QString& msg)
{
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emitFailed(msg);
}
void SequentialTask::subTaskStatus(const QString& msg)
{
setStepStatus(msg);
}
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void SequentialTask::subTaskProgress(qint64 current, qint64 total)
{
if (total == 0) {
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setProgress(0, 100);
return;
}
setProgress(m_currentIndex + 1, m_queue.count());
m_stepProgress = current;
m_stepTotalProgress = total;
}