qqmlviewplaceholder.h

#ifndef QTMVVM_QQMLVIEWPLACEHOLDER_H
#define QTMVVM_QQMLVIEWPLACEHOLDER_H

#include <QtQuick/QQuickItem>

#include <QtMvvmCore/ViewModel>

#ifdef DOXYGEN_RUN
namespace de::skycoder42::QtMvvm::Quick {

class ViewPlaceholder
#else
namespace QtMvvm {

class QQmlViewPlaceholder : public QQuickItem
#endif
{
    Q_OBJECT

    Q_PROPERTY(bool autoResizeView MEMBER _autoResizeView NOTIFY autoResizeViewChanged)
    Q_PROPERTY(bool replaceViews MEMBER _replaceViews NOTIFY replaceViewsChanged)
    Q_PROPERTY(bool closeViewOnAction MEMBER _closeViewOnAction NOTIFY closeViewOnActionChanged)

    Q_PROPERTY(QQuickItem* loadedView READ loadedView NOTIFY loadedViewChanged)

public:
    explicit QQmlViewPlaceholder(QQuickItem *parent = nullptr);

    Q_INVOKABLE bool presentItem(QQuickItem *item);
    Q_INVOKABLE bool closeAction();

    QQuickItem* loadedView() const;

public Q_SLOTS:
    void discardView();

Q_SIGNALS:
    void autoResizeViewChanged(bool autoResizeView);
    void replaceViewsChanged(bool replaceViews);
    void closeViewOnActionChanged(bool closeViewOnAction);
    void loadedViewChanged(QQuickItem* loadedView);

private Q_SLOTS:
    void resizeView();

    void updateImpHeight();
    void updateImpWidth();

private:
    bool _autoResizeView = true;
    bool _replaceViews = false;
    bool _closeViewOnAction = false;

    QPointer<QQuickItem> _loadedView = nullptr;

    bool _isReady = false;
    QMetaObject::Connection _parentVmCon;

    void connectSizeChanges();
    void disconnectSizeChanges(bool resetSize);
};

}

#endif // QTMVVM_QQMLVIEWPLACEHOLDER_H