9a44c92211
This is a variation of a Sequential Task, in which a subtask failing will prompt the next one to execute, and a subtask being successful will stop the task. This way, this can be used for easily managing fallbacks with tasks. :D Signed-off-by: flow <flowlnlnln@gmail.com>
49 lines
1.6 KiB
C++
49 lines
1.6 KiB
C++
#include "MultipleOptionsTask.h"
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#include <QDebug>
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MultipleOptionsTask::MultipleOptionsTask(QObject* parent, const QString& task_name) : SequentialTask(parent, task_name) {}
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void MultipleOptionsTask::startNext()
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{
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Task* previous = nullptr;
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if (m_currentIndex != -1) {
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previous = m_queue[m_currentIndex].get();
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disconnect(previous, 0, this, 0);
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}
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m_currentIndex++;
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if ((previous && previous->wasSuccessful())) {
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emitSucceeded();
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return;
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}
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Task::Ptr next = m_queue[m_currentIndex];
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connect(next.get(), &Task::failed, this, &MultipleOptionsTask::subTaskFailed);
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connect(next.get(), &Task::succeeded, this, &MultipleOptionsTask::startNext);
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connect(next.get(), &Task::status, this, &MultipleOptionsTask::subTaskStatus);
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connect(next.get(), &Task::stepStatus, this, &MultipleOptionsTask::subTaskStatus);
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connect(next.get(), &Task::progress, this, &MultipleOptionsTask::subTaskProgress);
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qDebug() << QString("Making attemp %1 out of %2").arg(m_currentIndex + 1).arg(m_queue.size());
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setStatus(tr("Making attempt #%1 out of %2").arg(m_currentIndex + 1).arg(m_queue.size()));
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setStepStatus(next->isMultiStep() ? next->getStepStatus() : next->getStatus());
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next->start();
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}
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void MultipleOptionsTask::subTaskFailed(QString const& reason)
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{
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qDebug() << QString("Failed attempt #%1 of %2. Reason: %3").arg(m_currentIndex + 1).arg(m_queue.size()).arg(reason);
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if(m_currentIndex < m_queue.size() - 1) {
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startNext();
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return;
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}
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qWarning() << QString("All attempts have failed!");
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emitFailed();
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}
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