91 lines
3.2 KiB
C++
91 lines
3.2 KiB
C++
////////////////////////////////////////////////////////////////////////////////////////////////////
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// NoesisGUI - http://www.noesisengine.com
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// Copyright (c) Noesis Technologies S.L. All Rights Reserved.
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////////////////////////////////////////////////////////////////////////////////////////////////////
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#ifndef __GUI_MULTIDATATRIGGER_H__
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#define __GUI_MULTIDATATRIGGER_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/HashMap.h>
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#include <NsGui/CoreApi.h>
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#include <NsGui/BaseTrigger.h>
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namespace Noesis
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{
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class BaseSetter;
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class Condition;
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template<class T> class UICollection;
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typedef UICollection<BaseSetter> BaseSetterCollection;
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typedef UICollection<Condition> ConditionCollection;
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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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/// Represents a trigger that applies property values or performs actions when the bound data meets
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/// a set of conditions.
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///
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/// A MultiDataTrigger object is similar to a MultiTrigger, except that the conditions of a
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/// MultiDataTrigger are based on property values of bound data instead of those of a UIElement.
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/// In a MultiDataTrigger, a condition is met when the property value of the data item matches the
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/// specified Value. You can then use setters or the *EnterActions* and *ExitActions* properties to
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/// apply changes or start actions when all of the conditions are met.
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///
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/// http://msdn.microsoft.com/en-us/library/system.windows.multidatatrigger.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API MultiDataTrigger: public BaseTrigger
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{
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public:
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MultiDataTrigger();
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~MultiDataTrigger();
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/// Gets a collection of Condition objects. Changes to property values are applied when all of
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/// the conditions in the collection are met.
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ConditionCollection* GetConditions() const;
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/// Gets a collection of Setter objects, which describe the property values to apply when all
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/// of the conditions of the MultiTrigger are met.
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BaseSetterCollection* GetSetters() const;
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/// From BaseTrigger
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//@{
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void RegisterBindings(FrameworkElement* target, FrameworkElement* nameScope,
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bool skipTargetName, uint8_t priority) final;
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void UnregisterBindings(FrameworkElement* target) final;
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BaseComponent* FindValue(FrameworkElement* target, FrameworkElement* nameScope,
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DependencyObject* object, const DependencyProperty* dp, bool skipSourceName,
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bool skipTargetName) final;
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void Invalidate(FrameworkElement* target, FrameworkElement* nameScope, bool skipSourceName,
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bool skipTargetName, uint8_t priority) final;
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void Seal() override;
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//@}
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ConditionCollection* InternalGetConditions() const; // can return null
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BaseSetterCollection* InternalGetSetters() const; // can return null
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struct Listener;
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private:
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mutable Ptr<ConditionCollection> mConditions;
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mutable Ptr<BaseSetterCollection> mSetters;
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struct ListenerHashKeyInfo;
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typedef HashSet<Listener*, 0, HashBucket_K<Listener*, ListenerHashKeyInfo>> Listeners;
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Listeners mListeners;
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NS_DECLARE_REFLECTION(MultiDataTrigger, BaseTrigger)
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};
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NS_WARNING_POP
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}
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#endif
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