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92 lines
3.1 KiB
92 lines
3.1 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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#include "QtMvvmCore/injection.h"
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namespace QtMvvm {
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class CoreApp;
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class CoreAppPrivate;
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class ViewModelPrivate;
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//! The base class for all viewmodels
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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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//! Default constructor with parent
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explicit ViewModel(QObject *parent = nullptr);
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~ViewModel() override;
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public Q_SLOTS:
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//! Called by the presenter to initialize the viewmodel
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virtual void onInit(const QVariantHash ¶ms);
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//! Called by the presenter when a result of a showed viewmodel is ready
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virtual void onResult(quint32 requestCode, const QVariant &result);
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Q_SIGNALS:
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//! Should be emitted when the viewmodels result is ready
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void resultReady(const QVariant &result);
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Q_REVISION(1) void instanceInvoked(QPrivateSignal);
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protected:
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//! Show another viewmodel as a child of this one
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template <typename TViewModel>
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inline void show(QVariantHash params = {}) const;
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//! @copybrief ViewModel::show(const QVariantHash &) const
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void show(const char *viewModelName, const QVariantHash ¶ms = {}) const;
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//! @copybrief ViewModel::show(const QVariantHash &) const
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void show(const QMetaObject *viewMetaObject, const QVariantHash ¶ms = {}) const;
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//! Show another viewmodel as a child of this one and expect its result
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template <typename TViewModel>
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inline void showForResult(quint32 requestCode, QVariantHash params = {}) const;
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//! @copybrief ViewModel::showForResult(quint32, const QVariantHash &) const
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void showForResult(quint32 requestCode, const char *viewModelName, const QVariantHash ¶ms = {}) const;
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//! @copybrief ViewModel::showForResult(quint32, const QVariantHash &) 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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friend class QtMvvm::CoreAppPrivate;
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QScopedPointer<ViewModelPrivate> d;
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static void showImp(const QMetaObject *metaObject, QVariantHash params, QPointer<ViewModel> parent, quint32 requestCode = 0);
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};
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//TODO doc
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#define QTMVVM_SINGLETON Q_CLASSINFO("qtmvvm_singleton", "true")
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#define QTMVVM_CONTAINER_VM(x) Q_CLASSINFO("qtmvvm_container_viewmodel", #x)
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// ------------- Generic Implementation -------------
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template<typename TViewModel>
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inline void ViewModel::show(QVariantHash params) 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, std::move(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, QVariantHash params) 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, std::move(params), const_cast<ViewModel*>(this), requestCode);
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}
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}
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Q_DECLARE_METATYPE(QtMvvm::ViewModel*)
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#endif // QTMVVM_VIEWMODEL_H
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