src/apps/switcher/GroupListView.h

   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 int32                           CountItems() = 0;
  16         virtual void*                           ItemAt(int32 index) = 0;
  17
  18         virtual int32                           CountGroups() = 0;
  19         virtual void*                           GroupAt(int32 index) = 0;
  20         virtual void*                           GroupForItemAt(int32 index) = 0;
  21 };
  22
  23
  24 class ListItemRenderer {
  25 public:
  26         virtual void                            SetTo(BView* owner, void* item) = 0;
  27
  28         virtual BSize                           MinSize() = 0;
  29         virtual BSize                           MaxSize() = 0;
  30         virtual BSize                           PreferredSize() = 0;
  31
  32         virtual void                            Draw(BView* owner, BRect frame, int32 index,
  33                                                                         bool selected) = 0;
  34 };
  35
  36
  37 class GroupListView : public BView {
  38 public:
  39                                                                 GroupListView(const char* name,
  40                                                                         GroupListModel* model = NULL,
  41                                                                         enum orientation orientation = B_VERTICAL,
  42                                                                         float spacing = 0);
  43         virtual                                         ~GroupListView();
  44
  45                         GroupListModel*         Model() const
  46                                                                         { return fModel; }
  47         virtual void                            SetModel(GroupListModel* model);
  48
  49                         ListItemRenderer*       ItemRenderer() const
  50                                                                         { return fItemRenderer; }
  51         virtual void                            SetItemRenderer(ListItemRenderer* renderer);
  52                         ListItemRenderer*       GroupRenderer() const
  53                                                                         { return fGroupRenderer; }
  54         virtual void                            SetGroupRenderer(ListItemRenderer* renderer);
  55
  56                         BMessage*                       SelectionMessage() const
  57                                                                         { return fSelectionMessage; }
  58         virtual void                            SetSelectionMessage(BMessage* message,
  59                                                                         BMessenger target);
  60
  61         virtual void                            AttachedToWindow();
  62         virtual void                            MessageReceived(BMessage* message);
  63         virtual void                            MouseDown(BPoint point);
  64         virtual void                            Draw(BRect updateRect);
  65
  66 private:
  67                         void                            _Draw(BLayoutItem* item, BRect updateRect);
  68                         BLayoutItem*            _ItemAt(BLayoutItem* item, BPoint point);
  69
  70 private:
  71                         GroupListModel*         fModel;
  72                         ListItemRenderer*       fItemRenderer;
  73                         ListItemRenderer*       fGroupRenderer;
  74
  75                         BMessage*                       fSelectionMessage;
  76                         BMessenger                      fSelectionTarget;
  77 };
  78
  79
  80 #endif  // GROUP_LIST_VIEW_H