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69 lines
2.1 KiB
69 lines
2.1 KiB
#ifndef QTMVVM_VIEWMODEL_H
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#define QTMVVM_VIEWMODEL_H
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#include <type_traits>
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#include <QtCore/qobject.h>
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#include <QtCore/qscopedpointer.h>
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#include <QtCore/qvariant.h>
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#include <QtCore/qpointer.h>
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#include "QtMvvmCore/qtmvvmcore_global.h"
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namespace QtMvvm {
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class CoreApp;
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class ViewModelPrivate;
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class Q_MVVMCORE_EXPORT ViewModel : public QObject
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{
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Q_OBJECT
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public:
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explicit ViewModel(QObject *parent = nullptr);
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~ViewModel();
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public Q_SLOTS:
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virtual void onInit(const QVariantHash ¶ms);
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virtual void onResult(quint32 requestCode, const QVariant &result);
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Q_SIGNALS:
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void resultReady(const QVariant &result);
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protected:
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template <typename TViewModel>
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inline void show(const QVariantHash ¶ms = {}) const;
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void show(const char *viewModelName, const QVariantHash ¶ms = {}) const;
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void show(const QMetaObject *viewMetaObject, const QVariantHash ¶ms = {}) const;
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template <typename TViewModel>
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inline void showForResult(quint32 requestCode, const QVariantHash ¶ms = {}) const;
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void showForResult(quint32 requestCode, const char *viewModelName, const QVariantHash ¶ms = {}) const;
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void showForResult(quint32 requestCode, const QMetaObject *viewMetaObject, const QVariantHash ¶ms = {}) const;
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private:
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friend class QtMvvm::CoreApp;
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QScopedPointer<ViewModelPrivate> d;
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static void showImp(const QMetaObject *metaObject, const QVariantHash ¶ms, QPointer<ViewModel> parent, quint32 requestCode = 0);
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};
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// ------------- Generic Implementation -------------
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template<typename TViewModel>
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inline void ViewModel::show(const QVariantHash ¶ms) const
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{
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static_assert(std::is_base_of<ViewModel, TViewModel>::value, "TViewModel must extend QtMvvm::ViewModel");
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showImp(&TViewModel::staticMetaObject, params, const_cast<ViewModel*>(this));
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}
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template<typename TViewModel>
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void ViewModel::showForResult(quint32 requestCode, const QVariantHash ¶ms) const
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{
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static_assert(std::is_base_of<ViewModel, TViewModel>::value, "TViewModel must extend QtMvvm::ViewModel");
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showImp(&TViewModel::staticMetaObject, params, const_cast<ViewModel*>(this), requestCode);
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}
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}
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#endif // QTMVVM_VIEWMODEL_H
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