104 lines
2.8 KiB
C++
104 lines
2.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// File: ListItem.h
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//
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// Description: BListView represents a one-dimensional list view.
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//
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// Copyright 2001, Ulrich Wimboeck
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef _LIST_ITEM_H
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#define _LIST_ITEM_H
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#include <BeBuild.h>
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#include <Archivable.h>
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#include <Rect.h>
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class BFont ;
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class BMessage ;
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class BOutlineListView ;
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class BView ;
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#ifdef USE_OPENBEOS_NAMESPACE
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namespace OpenBeOS
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{
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#endif
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/*----------------------------------------------------------------*/
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/*----- BListItem class ------------------------------------------*/
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/**
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* A BListItem represents a single item in a BListView (or
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* BOutlineListView). The BListItem object provides drawing
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* instructions that can draw the item (through DrawItem()), and
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* keeps track of the item's state. To use a BListItem, you must
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* add it to a BListView through BListView::AddItem()
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* (BOutlineListView provides additional item-adding functions).
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* The BListView object provides the drawing context for the
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* BListItem's DrawItem() function.
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*
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* BListItem is abstract; each subclass must implement DrawItem().
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* BStringItem—the only BListItem subclass provided by
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* Be—implements the function to draw the item as a line of text.
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*/
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class BListItem : public BArchivable
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{
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public:
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BListItem(uint32 outlineLevel = 0, bool expanded = true) ;
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BListItem(BMessage* data) ;
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virtual ~BListItem() ;
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virtual status_t Archive(BMessage* data, bool deep = true) const ;
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float Height() const ;
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float Width() const ;
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bool IsSelected() const ;
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void Select() ;
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void Deselect() ;
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virtual void SetEnabled(bool on) ;
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bool IsEnabled() const ;
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void SetHeight(float height) ;
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void SetWidth(float width) ;
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virtual void DrawItem(BView* owner, BRect bounds, bool complete = false) = 0 ;
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virtual void Update(BView* owner, const BFont* font) ;
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virtual status_t Perform(perform_code d, void* arg) ;
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bool IsExpanded() const ;
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void SetExpanded(bool expanded) ;
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uint32 OutlineLevel() const ;
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/*----- Private or reserved -----------------------------------------*/
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private:
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friend class BOutlineListView ;
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BListItem(const BListItem&) ;
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BListItem& operator=(const BListItem&) ;
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float fWidth ;
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float fHeight ;
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uint32 fLevel ;
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bool fSelected ;
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bool fEnabled ;
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bool fExpanded ;
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bool fHasSubItems ;
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bool fVisible ;
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} ;
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// in the interface kit the BStringItem class is declared within ListItem.h
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#ifndef USE_OPENBEOS_NAMESPACE
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#include "StringItem.h"
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#endif
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#ifdef USE_OPENBEOS_NAMESPACE
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}
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#endif
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#endif /* _LIST_ITEM_H */
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