1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
|
#include "SequentialTask.h"
#include <QDebug>
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;
}
void SequentialTask::addTask(Task::Ptr task)
{
m_queue.append(task);
}
void SequentialTask::executeTask()
{
m_currentIndex = -1;
startNext();
}
bool SequentialTask::abort()
{
if(m_currentIndex == -1 || m_currentIndex >= m_queue.size()) {
if(m_currentIndex == -1) {
// Don't call emitAborted() here, we want to bypass the 'is the task running' check
emit aborted();
emit finished();
}
m_aborted = true;
return true;
}
bool succeeded = m_queue[m_currentIndex]->abort();
m_aborted = succeeded;
if (succeeded)
emitAborted();
return succeeded;
}
void SequentialTask::startNext()
{
if (m_aborted)
return;
if (m_currentIndex != -1 && m_currentIndex < m_queue.size()) {
Task::Ptr previous = m_queue.at(m_currentIndex);
disconnect(previous.get(), 0, this, 0);
}
m_currentIndex++;
if (m_queue.isEmpty() || m_currentIndex >= m_queue.size()) {
emitSucceeded();
return;
}
Task::Ptr next = m_queue[m_currentIndex];
connect(next.get(), SIGNAL(failed(QString)), this, SLOT(subTaskFailed(QString)));
connect(next.get(), SIGNAL(succeeded()), this, SLOT(startNext()));
connect(next.get(), SIGNAL(status(QString)), this, SLOT(subTaskStatus(QString)));
connect(next.get(), SIGNAL(stepStatus(QString)), this, SLOT(subTaskStatus(QString)));
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());
setProgress(m_currentIndex + 1, m_queue.count());
next->start();
}
void SequentialTask::subTaskFailed(const QString& msg)
{
emitFailed(msg);
}
void SequentialTask::subTaskStatus(const QString& msg)
{
setStepStatus(msg);
}
void SequentialTask::subTaskProgress(qint64 current, qint64 total)
{
if (total == 0) {
setProgress(0, 100);
return;
}
m_stepProgress = current;
m_stepTotalProgress = total;
}
|
