UiExpressionBrowser.hpp

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#pragma once
 
#include "AstGlobal.h"
#include "AstScript/Expr.hpp"
#include "AstUtil/Object.hpp"
#include "AstUtil/Attribute.hpp"
#include "AstUtil/SharedPtr.hpp"
#include <QWidget>
 
class QTreeWidget;
class QTreeWidgetItem;
class QPushButton;
 
AST_NAMESPACE_BEGIN
 
class UiObjectTree;
class UiAttributeTree;
 
class AST_GUI_API UiExpressionBrowser : public QWidget
{
    Q_OBJECT
public:
    explicit UiExpressionBrowser(QWidget* parent = nullptr);
    UiExpressionBrowser(const UiExpressionBrowser&) = delete;
    UiExpressionBrowser& operator=(const UiExpressionBrowser&) = delete;
 
    Expr* selectedExpression() const { return selectedExpr_.get(); }
 
    static Expr* GetExpression(QWidget* parent = nullptr);
 
signals:
    void propertyExpressionSelected(Expr* expr);
 
    void calculationExpressionSelected(Expr* expr);
 
private slots:
    void onObjectSelected(Object* object);
    void onPropertySelected(const Attribute& attr);
    void onCalculationSelectionChanged();
    void onPropertyAccepted();
    void onCalculationAccepted();
    void onItemDoubleClicked(QTreeWidgetItem* item, int column);
 
private:
    void setupUi();
    void refreshCalculationTree();
 
    UiObjectTree*    objectTree_ = nullptr;
    UiAttributeTree* propertyTree_ = nullptr;
    QTreeWidget*     calculationTree_ = nullptr;
    QPushButton*     propertySelectButton_ = nullptr;
    QPushButton*     calculationSelectButton_ = nullptr;
    WeakPtr<Object>  currentObject_ = nullptr;
    SharedPtr<Expr>  selectedExpr_{}; 
};
 
AST_NAMESPACE_END