qitemeditorfactory.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QITEMEDITORFACTORY_H
#define QITEMEDITORFACTORY_H
 
#include <QtWidgets/qtwidgetsglobal.h>
#include <QtCore/qmetaobject.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qhash.h>
#include <QtCore/qvariant.h>
 
QT_REQUIRE_CONFIG(itemviews);
 
QT_BEGIN_NAMESPACE
 
class QWidget;
 
class Q_WIDGETS_EXPORT QItemEditorCreatorBase
{
public:
    virtual ~QItemEditorCreatorBase();
 
    virtual QWidget *createWidget(QWidget *parent) const = 0;
    virtual QByteArray valuePropertyName() const = 0;
};
 
template <class T>
class QItemEditorCreator : public QItemEditorCreatorBase
{
public:
    inline explicit QItemEditorCreator(const QByteArray &valuePropertyName);
    inline QWidget *createWidget(QWidget *parent) const override { return new T(parent); }
    inline QByteArray valuePropertyName() const override { return propertyName; }
 
private:
    QByteArray propertyName;
};
 
template <class T>
class QStandardItemEditorCreator: public QItemEditorCreatorBase
{
public:
    inline QStandardItemEditorCreator()
        : propertyName(T::staticMetaObject.userProperty().name())
    {}
    inline QWidget *createWidget(QWidget *parent) const override { return new T(parent); }
    inline QByteArray valuePropertyName() const override { return propertyName; }
 
private:
    QByteArray propertyName;
};
 
 
template <class T>
Q_INLINE_TEMPLATE QItemEditorCreator<T>::QItemEditorCreator(const QByteArray &avaluePropertyName)
    : propertyName(avaluePropertyName) {}
 
class Q_WIDGETS_EXPORT QItemEditorFactory
{
public:
    inline QItemEditorFactory() {}
    virtual ~QItemEditorFactory();
 
    virtual QWidget *createEditor(int userType, QWidget *parent) const;
    virtual QByteArray valuePropertyName(int userType) const;
 
    void registerEditor(int userType, QItemEditorCreatorBase *creator);
 
    static const QItemEditorFactory *defaultFactory();
    static void setDefaultFactory(QItemEditorFactory *factory);
 
private:
    QHash<int, QItemEditorCreatorBase *> creatorMap;
};
 
QT_END_NAMESPACE
 
#endif // QITEMEDITORFACTORY_H