69 lines
2.0 KiB
C++
69 lines
2.0 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////////////////
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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_INOTIFYDICTIONARYCHANGED_H__
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#define __GUI_INOTIFYDICTIONARYCHANGED_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/Interface.h>
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#include <NsCore/ReflectionImplementEmpty.h>
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namespace Noesis
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{
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class BaseComponent;
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template<class T> class Delegate;
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/// Describes the action that caused the DictionaryChanged event
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enum NotifyDictionaryChangedAction
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{
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/// One item was added to the dictionary
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NotifyDictionaryChangedAction_Add,
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/// One item was removed from the dictionary
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NotifyDictionaryChangedAction_Remove,
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/// One item was replaced in the dictionary
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NotifyDictionaryChangedAction_Replace,
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/// The content of the dictionary was cleared
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NotifyDictionaryChangedAction_Reset,
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/// The content of the dictionary is going to be cleared
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NotifyDictionaryChangedAction_PreReset
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};
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/// Provides data for the DictionaryChanged event
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struct NotifyDictionaryChangedEventArgs
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{
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NotifyDictionaryChangedAction action;
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const char* key;
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const BaseComponent* oldValue;
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const BaseComponent* newValue;
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};
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typedef Delegate<void (BaseComponent*, const NotifyDictionaryChangedEventArgs&)>
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NotifyDictionaryChangedEventHandler;
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////////////////////////////////////////////////////////////////////////////////////////////////////
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/// Notifies listeners of dynamic changes, such as when items get added and removed or the whole
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/// dictionary is refreshed.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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NS_INTERFACE INotifyDictionaryChanged: public Interface
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{
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/// Occurs when the dictionary changes
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virtual NotifyDictionaryChangedEventHandler& DictionaryChanged() = 0;
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NS_IMPLEMENT_INLINE_REFLECTION_(INotifyDictionaryChanged, Interface)
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};
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}
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#endif
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