166 lines
5.2 KiB
C++
166 lines
5.2 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_ITEMCOLLECTION_H__
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#define __GUI_ITEMCOLLECTION_H__
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#include <NsCore/Noesis.h>
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#include <NsCore/BaseComponent.h>
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#include <NsCore/ReflectionDeclare.h>
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#include <NsCore/Delegate.h>
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#include <NsGui/CoreApi.h>
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#include <NsGui/ICollectionView.h>
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#include <NsGui/IList.h>
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#include <NsGui/INotifyCollectionChanged.h>
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#include <NsGui/IComponentInitializer.h>
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#include <NsGui/IUITreeNode.h>
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namespace Noesis
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{
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class DependencyObject;
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class ItemsControl;
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template<class T> class UICollection;
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class CollectionView;
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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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/// Holds the list of items that constitute the content of an ItemsControl.
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///
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/// https://msdn.microsoft.com/en-us/library/system.windows.controls.itemcollection.aspx
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////////////////////////////////////////////////////////////////////////////////////////////////////
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class NS_GUI_CORE_API ItemCollection: public BaseComponent, public IList, public ICollectionView,
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public INotifyCollectionChanged, public IComponentInitializer,
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public IUITreeNode
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{
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public:
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ItemCollection(ItemsControl* itemsControl);
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~ItemCollection();
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/// To be called from ItemsControl when the ItemsSource is assigned with a CollectionView
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void SetView(CollectionView* view);
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/// Check if the itemcollection is related to an external collection, and so it is readonly
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bool IsReadOnly() const;
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/// Gets the item at the specified index
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Ptr<BaseComponent> GetItemAt(uint32_t index) const;
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/// Sets the item at the specified index
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void Set(uint32_t index, BaseComponent* item);
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/// Adds an item to the collection. Returns The position into which the new element was
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/// inserted, or -1 to indicate that the item was not inserted into the collection
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int Add(BaseComponent* item);
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/// Inserts an item to the collection at the specified index
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void Insert(uint32_t index, BaseComponent* item);
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/// Determines the index of a specific item in the collection. Returns -1 if not found
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int IndexOf(const BaseComponent* item) const;
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/// Removes the first occurrence of a specific object from the collection. Returns true if item
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/// was removed, false to indicate that the item was not found in the collection
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bool Remove(const BaseComponent* item);
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/// From IList
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//@{
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Ptr<BaseComponent> GetComponent(uint32_t index) const final;
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void SetComponent(uint32_t index, BaseComponent* item) final;
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int AddComponent(BaseComponent* item) final;
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void InsertComponent(uint32_t index, BaseComponent* item) final;
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int IndexOfComponent(const BaseComponent* item) const final;
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void RemoveAt(uint32_t index) final;
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int Count() const final;
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void Clear() final;
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//@}
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/// From ICollectionView
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//@{
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bool CanFilter() const final;
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bool CanGroup() const final;
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bool CanSort() const final;
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bool Contains(const BaseComponent* item) const final;
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Ptr<BaseComponent> CurrentItem() const final;
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int CurrentPosition() const final;
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bool IsCurrentAfterLast() const final;
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bool IsCurrentBeforeFirst() const final;
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bool IsEmpty() const final;
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bool MoveCurrentTo(BaseComponent* item) final;
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bool MoveCurrentToFirst() final;
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bool MoveCurrentToLast() final;
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bool MoveCurrentToNext() final;
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bool MoveCurrentToPosition(int position) final;
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bool MoveCurrentToPrevious() final;
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void Refresh() final;
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EventHandler& CurrentChanged() final;
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//@}
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/// From INotifyCollectionChanged
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//@{
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NotifyCollectionChangedEventHandler& CollectionChanged() final;
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//@}
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/// From IComponentInitializer
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//@{
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bool IsInitialized() const override;
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void Init() override;
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void BeginInit() override;
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void EndInit() override;
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//@}
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/// From IUITreeNode
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//@{
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IUITreeNode* GetNodeParent() const final;
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void SetNodeParent(IUITreeNode* parent) final;
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BaseComponent* FindNodeResource(const char* key, bool fullElementSearch) const final;
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ObjectWithNameScope FindNodeName(const char* name) const final;
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//@}
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NS_IMPLEMENT_INTERFACE_FIXUP
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private:
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bool CheckReadOnly() const;
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void ConnectChildren() const;
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void DisconnectChildren() const;
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void OnCollectionChanged(BaseComponent* sender,
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const NotifyCollectionChangedEventArgs& args);
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void OnCurrentChanged(BaseComponent* sender, const EventArgs& args);
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void ConnectCollection();
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void DisconnectCollection();
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void RegisterDelegates();
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void UnregisterDelegates();
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void Reset(DependencyObject* d);
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private:
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bool mIsInitialized;
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ItemsControl* mItemsControl;
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Ptr<UICollection<BaseComponent>> mLocalCollection;
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Ptr<CollectionView> mEffectiveCollectionView;
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EventHandler mCurrentChanged;
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NotifyCollectionChangedEventHandler mCollectionChanged;
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NS_DECLARE_REFLECTION(ItemCollection, BaseComponent)
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};
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NS_WARNING_POP
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}
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#endif
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