xmake.repo/packages/n/noesis/latest/Include/NsGui/TemplateBindingExpression.h
2024-12-22 19:15:02 +08:00

84 lines
2.4 KiB
C++

////////////////////////////////////////////////////////////////////////////////////////////////////
// NoesisGUI - http://www.noesisengine.com
// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
////////////////////////////////////////////////////////////////////////////////////////////////////
#ifndef __GUI_TEMPLATEBINDINGEXPRESSION_H__
#define __GUI_TEMPLATEBINDINGEXPRESSION_H__
#include <NsCore/Noesis.h>
#include <NsGui/CoreApi.h>
#include <NsGui/Expression.h>
#include <NsCore/ReflectionDeclare.h>
#include <NsCore/Ptr.h>
namespace Noesis
{
class TypeConverter;
class DependencyObject;
class FrameworkElement;
class TemplateBindingExtension;
struct DependencyPropertyChangedEventArgs;
NS_WARNING_PUSH
NS_MSVC_WARNING_DISABLE(4251 4275)
////////////////////////////////////////////////////////////////////////////////////////////////////
/// Describes a run-time instance of a TemplateBindingExtension.
///
/// https://msdn.microsoft.com/en-us/library/system.windows.templatebindingexpression.aspx
////////////////////////////////////////////////////////////////////////////////////////////////////
class NS_GUI_CORE_API TemplateBindingExpression final: public Expression
{
public:
~TemplateBindingExpression();
NS_DECLARE_POOL_ALLOCATOR
/// Gets the TemplateBindingExtension object of this expression instance
/// \prop
TemplateBindingExtension* GetTemplateBindingExtension() const;
/// From Expression
//@{
Ptr<BaseComponent> Evaluate() const;
Ptr<Expression> Reapply(DependencyObject* targetObject,
const DependencyProperty* targetProperty) const;
//@}
private:
friend class TemplateBindingExtension;
TemplateBindingExpression(TemplateBindingExtension* extension, DependencyObject* targetObject,
const DependencyProperty* targetProperty);
void Register();
void Unregister();
void OnTemplatedParentPropertyChanged(BaseComponent* sender,
const DependencyPropertyChangedEventArgs& args);
void TemplatedParentDestroyed(DependencyObject* object);
void TargetDestroyed(DependencyObject* object);
private:
Ptr<TemplateBindingExtension> mBinding;
DependencyObject* mTargetObject;
const DependencyProperty* mTargetProperty;
FrameworkElement* mTemplatedParent;
Ptr<TypeConverter> mConverter;
NS_DECLARE_REFLECTION(TemplateBindingExpression, Expression)
};
NS_WARNING_POP
}
#endif