115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
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////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) 2013 Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_UIELEMENTDATA_H__
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#define __GUI_UIELEMENTDATA_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/HashMap.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsCore/Ptr.h>
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#include <NsGui/CoreApi.h>
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#include <NsGui/RoutedEvent.h>
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#include <NsGui/DependencyData.h>
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namespace Noesis
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{
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NS_WARNING_PUSH
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NS_MSVC_WARNING_DISABLE(4251 4275)
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////////////////////////////////////////////////////////////////////////////////////////////////////
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struct EventHandlerInfo
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{
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EventHandler handler;
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bool invokeHandledEvents;
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};
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Used to register routed events for a UIElement type.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API UIElementData: public DependencyData
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{
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public:
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UIElementData(const TypeClass* ownerType);
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/// Registers a routed event for a type
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/// \param event Element that receives the new routed event handler
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/// \param name The name of routed event. The name must be unique for the type
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/// \param strategy Type of routing strategy followed by this event
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void RegisterEvent(const RoutedEvent*& event, const char* name, RoutingStrategy strategy);
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/// Register an event owner by another class
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/// \param event Element that receives the routed event handler
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/// \param name The name of routed event. The name must be unique for the type
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/// \param source Source routed element
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void AddEventOwner(const RoutedEvent*& event, const char* name, const RoutedEvent*& source);
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/// Finds a routed event for the owner type given its name
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const RoutedEvent* FindEvent(Symbol name) const;
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/// Registers an event with a delegate to be executed in first place when the event is raised
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void RegisterEventHandler(const RoutedEvent* event, const EventHandler& handler,
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bool invokeHandledEvents = false);
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/// Find the static method associated with an event
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const EventHandlerInfo* FindEventHandler(const RoutedEvent* event) const;
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private:
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const RoutedEvent* InsertEvent(const RoutedEvent* ev);
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private:
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friend class UIElementDataTest;
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struct EventKeyInfo
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{
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static bool IsEmpty(const Ptr<const RoutedEvent>& k)
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{
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return k.GetPtr() == (const RoutedEvent*)0x01;
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}
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static void MarkEmpty(const Ptr<const RoutedEvent>& k)
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{
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*(const RoutedEvent**)(&k) = (const RoutedEvent*)0x01;
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}
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static uint32_t HashValue(const Ptr<const RoutedEvent>& k) { return k->GetName(); }
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static uint32_t HashValue(Symbol k) { return k; }
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static bool IsEqual(const Ptr<const RoutedEvent>& lhs, const Ptr<const RoutedEvent>& rhs)
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{
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return !IsEmpty(lhs) && lhs->GetName() == rhs->GetName();
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}
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static bool IsEqual(const Ptr<const RoutedEvent>& lhs, Symbol rhs)
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{
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return !IsEmpty(lhs) && lhs->GetName() == rhs;
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}
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};
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typedef HashBucket_K<Ptr<const RoutedEvent>, EventKeyInfo> Bucket;
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typedef HashSet<Ptr<const RoutedEvent>, 0, Bucket> EventMap;
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EventMap mEvents;
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typedef HashMap<const RoutedEvent*, EventHandlerInfo> EventHandlerMap;
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EventHandlerMap mEventHandlers;
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NS_DECLARE_REFLECTION(UIElementData, DependencyData)
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};
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NS_WARNING_POP
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/// Search for the static handler associated with an event
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NS_GUI_CORE_API const EventHandlerInfo* FindRoutedEventHandler(const TypeClass* type,
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const RoutedEvent* routed);
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}
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#endif
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