I have a QT QML project. (still very small)
I started by binding a listview on my UScenario
model, by subclassing QAbstractListModel
and it worked fined.
Now, each UScenario
has a list of UTask
, which also have a list of UCondition
(so, Utask
also subclasses QAbstractListModel
). But then, QT Creator gives me an error:
Core/Tasks/utask.h:6: erreur : base class 'QAbstractListModel' has private copy constructor
class UTask: public QAbstractListModel
^
So I'm not sure where is my problem. I tried reading the doc about QAbstractListModel
vs QAbstractItemModel
, but I have no clue.
I also tried to see if I ever constructed a UTask
in a wrong way; I think not.
// USCENARIO.h
#ifndef USCENARIO_H
#define USCENARIO_H
#include <QAbstractListModel>
#include "../Tasks/utask.h"
class UScenario : public QAbstractListModel
{
Q_OBJECT
public slots:
void cppSlot() { // Used to test the insertion from UI
this->addTask(UTask());
}
public:
enum TaskRoles {
IdRole = Qt::UserRole + 1
};
UScenario(QObject *parent = 0);
private:
QList<UTask> m_tasks;
public:
void addTask(const UTask &task);
virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
virtual QVariant data(const QModelIndex &index, int role) const;
virtual QHash<int, QByteArray> roleNames() const;
};
#endif // USCENARIO_H
// USCENARIO.CPP
#include "uscenario.h"
UScenario::UScenario(QObject *parent)
: QAbstractListModel(parent)
{
}
void UScenario::addTask(const UTask &task)
{
beginInsertRows(QModelIndex(), rowCount(), rowCount());
m_tasks.append(task);
endInsertRows();
}
int UScenario::rowCount(const QModelIndex & parent) const {
return m_tasks.count();
}
QVariant UScenario::data(const QModelIndex & index, int role) const {
if (index.row() < 0 || index.row() >= m_tasks.count())
return QVariant();
const UTask &task = m_tasks[index.row()];
if (role == IdRole)
return task.id();
return QVariant();
}
QHash<int, QByteArray> UScenario::roleNames() const {
QHash<int, QByteArray> roles;
roles[IdRole] = "id";
return roles;
}
// UTASK.H
#ifndef UTASK_H
#define UTASK_H
#include <QAbstractListModel>
#include "../Conditions/ucondition.h"
class UTask: public QAbstractListModel
{
Q_OBJECT
public:
enum TaskRoles {
typeRole = Qt::UserRole + 1
};
UTask(QObject *parent = 0);//:m_id(0){}
int id() const{return m_id;}
private:
int m_id;
QList<UCondition> m_conditions;
// QAbstractItemModel interface
public:
void addCondition(const UCondition &cond);
virtual int rowCount(const QModelIndex &parent = QModelIndex()) const;
virtual QVariant data(const QModelIndex &index, int role) const;
virtual QHash<int, QByteArray> roleNames() const;
};
#endif // UTASK_H
// UTASK.cpp
#include "utask.h"
UTask::UTask(QObject *parent):
QAbstractListModel(parent), m_id(0)
{
}
void UTask::addCondition(const UCondition &cond)
{
beginInsertRows(QModelIndex(), rowCount(), rowCount());
m_conditions.append(cond);
endInsertRows();
}
int UTask::rowCount(const QModelIndex &parent) const
{
return m_conditions.count();
}
QVariant UTask::data(const QModelIndex &index, int role) const
{
if (index.row() < 0 || index.row() >= m_conditions.count())
return QVariant();
const UCondition &cond = m_conditions[index.row()];
if (role == typeRole)
return cond.type();
return QVariant();
}
QHash<int, QByteArray> UTask::roleNames() const
{
QHash<int, QByteArray> roles;
roles[typeRole] = "type";
return roles;
}
// MAIN
#include <QtGui/QGuiApplication>
#include "qtquick2applicationviewer.h"
#include <qqmlengine.h>
#include <qqmlcontext.h>
#include <qqml.h>
#include <QtQuick/qquickitem.h>
#include <QtQuick/qquickview.h>
#include "../uCtrlCore/Scenario/uscenario.h"
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
UScenario scenarioModel;
scenarioModel.addTask(UTask());
scenarioModel.addTask(UTask());
scenarioModel.addTask(UTask());
QtQuick2ApplicationViewer viewer;
QQmlContext *ctxt = viewer.rootContext();
ctxt->setContextProperty("myScenarioModel", &scenarioModel);
viewer.setMainQmlFile(QStringLiteral("qml/uCtrlDesktopQml/main.qml"));
QObject *item = viewer.rootObject()->findChild<QObject*>("btn");
QObject::connect(item, SIGNAL(qmlSignal()), &scenarioModel, SLOT(cppSlot()));
viewer.showExpanded();
return app.exec();
}