It is accomplished ...

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@10 a95241bf-73f2-0310-859d-f6bbb57e9c96
2002-07-09 12:24:59 +00:00
commit 52a3801208
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+////////////////////////////////////////////////////////////////////////////////
+//
+//  File:           ListItem.h
+//
+//  Description:    BListView represents a one-dimensional list view.
+//
+//  Copyright 2001, Ulrich Wimboeck
+//
+////////////////////////////////////////////////////////////////////////////////
+
+#ifndef _LIST_ITEM_H
+#define _LIST_ITEM_H
+
+#include <BeBuild.h>
+#include <Archivable.h>
+#include <Rect.h>
+
+class BFont ;
+class BMessage ;
+class BOutlineListView ;
+class BView ;
+
+#ifdef USE_OPENBEOS_NAMESPACE
+namespace OpenBeOS
+{
+#endif
+
+/*----------------------------------------------------------------*/
+/*----- BListItem class ------------------------------------------*/
+
+/**
+ * A BListItem represents a single item in a BListView (or
+ * BOutlineListView). The BListItem object provides drawing
+ * instructions that can draw the item (through DrawItem()), and
+ * keeps track of the item's state. To use a BListItem, you must
+ * add it to a BListView through BListView::AddItem()
+ * (BOutlineListView provides additional item-adding functions).
+ * The BListView object provides the drawing context for the
+ * BListItem's DrawItem() function.
+ *
+ * BListItem is abstract; each subclass must implement DrawItem().
+ * BStringItem—the only BListItem subclass provided by
+ * Be—implements the function to draw the item as a line of text.
+ */
+
+class BListItem : public BArchivable
+{
+public:
+        BListItem(uint32 outlineLevel = 0, bool expanded = true) ;
+        BListItem(BMessage* data) ;
+virtual ~BListItem() ;
+
+virtual status_t  Archive(BMessage* data, bool deep = true) const ;
+
+        float     Height() const ;
+        float     Width() const ;
+        bool      IsSelected() const ;
+        void      Select() ;
+        void      Deselect() ;
+
+virtual void      SetEnabled(bool on) ;
+        bool      IsEnabled() const ;
+
+        void      SetHeight(float height) ;
+        void      SetWidth(float width) ;
+virtual void      DrawItem(BView* owner, BRect bounds, bool complete = false) = 0 ;
+virtual void      Update(BView* owner, const BFont* font) ;
+
+virtual status_t  Perform(perform_code d, void* arg) ;
+
+        bool      IsExpanded() const ;
+        void      SetExpanded(bool expanded) ;
+        uint32    OutlineLevel() const ;
+
+/*----- Private or reserved -----------------------------------------*/
+private:
+friend class BOutlineListView ;
+
+        BListItem(const BListItem&) ;
+        
+        BListItem& operator=(const BListItem&) ;
+
+  float   fWidth ;
+  float   fHeight ;
+  uint32  fLevel ;
+  bool    fSelected ;
+  bool    fEnabled ;
+
+  bool fExpanded ;
+  bool fHasSubItems ;
+  bool fVisible ;
+} ;
+
+// in the interface kit the BStringItem class is declared within ListItem.h
+#ifndef USE_OPENBEOS_NAMESPACE
+#include "StringItem.h"
+#endif
+
+#ifdef USE_OPENBEOS_NAMESPACE
+}
+#endif
+
+#endif /* _LIST_ITEM_H */