1 /* 2 * Copyright 2011, Axel Dörfler, axeld@pinc-software.de. 3 * Distributed under the terms of the MIT License. 4 */ 5 #ifndef GROUP_LIST_VIEW_H 6 #define GROUP_LIST_VIEW_H 7 8 9 #include <GroupView.h> 10 #include <Roster.h> 11 12 13 class GroupListModel { 14 public: 15 virtual ~GroupListModel() {}; 16 virtual int32 CountItems() = 0; 17 virtual void* ItemAt(int32 index) = 0; 18 19 virtual int32 CountGroups() = 0; 20 virtual addr_t GroupAt(int32 index) = 0; 21 virtual addr_t GroupForItemAt(int32 index) = 0; 22 }; 23 24 25 class ListItemRenderer { 26 public: 27 virtual ~ListItemRenderer() {}; 28 virtual void SetTo(BView* owner, void* item) = 0; 29 30 virtual BSize MinSize() = 0; 31 virtual BSize MaxSize() = 0; 32 virtual BSize PreferredSize() = 0; 33 34 virtual void Draw(BView* owner, BRect frame, int32 index, 35 bool selected) = 0; 36 }; 37 38 39 class GroupListView : public BView { 40 public: 41 GroupListView(const char* name, 42 GroupListModel* model = NULL, 43 enum orientation orientation = B_VERTICAL, 44 float spacing = 0); 45 virtual ~GroupListView(); 46 47 GroupListModel* Model() const 48 { return fModel; } 49 virtual void SetModel(GroupListModel* model); 50 51 ListItemRenderer* ItemRenderer() const 52 { return fItemRenderer; } 53 virtual void SetItemRenderer(ListItemRenderer* renderer); 54 ListItemRenderer* GroupRenderer() const 55 { return fGroupRenderer; } 56 virtual void SetGroupRenderer(ListItemRenderer* renderer); 57 58 BMessage* SelectionMessage() const 59 { return fSelectionMessage; } 60 virtual void SetSelectionMessage(BMessage* message, 61 BMessenger target); 62 63 virtual void AttachedToWindow(); 64 virtual void MessageReceived(BMessage* message); 65 virtual void MouseDown(BPoint point); 66 virtual void Draw(BRect updateRect); 67 68 private: 69 void _Draw(BLayoutItem* item, BRect updateRect); 70 BLayoutItem* _ItemAt(BLayoutItem* item, BPoint point); 71 72 private: 73 GroupListModel* fModel; 74 ListItemRenderer* fItemRenderer; 75 ListItemRenderer* fGroupRenderer; 76 77 BMessage* fSelectionMessage; 78 BMessenger fSelectionTarget; 79 }; 80 81 82 #endif // GROUP_LIST_VIEW_H 83