src/apps/aboutsystem/HyperTextView.h

   1 /*
   2  * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
   3  * Distributed under the terms of the MIT license.
   4  */
   5 #ifndef HYPER_TEXT_VIEW_H
   6 #define HYPER_TEXT_VIEW_H
   7
   8 #include <TextView.h>
   9
  10
  11 // TODO: The current implementation works correctly only for insertions at the
  12 // end of the text. It doesn't keep track of any other insertions or deletions.
  13
  14
  15 class HyperTextView;
  16
  17
  18 class HyperTextAction {
  19 public:
  20                                                                 HyperTextAction();
  21         virtual                                         ~HyperTextAction();
  22
  23         virtual void                            MouseOver(HyperTextView* view, BPoint where,
  24                                                                         BMessage* message);
  25         virtual void                            Clicked(HyperTextView* view, BPoint where,
  26                                                                         BMessage* message);
  27 };
  28
  29
  30 class HyperTextView : public BTextView {
  31 public:
  32                                                                 HyperTextView(const char* name,
  33                                                                         uint32 flags = B_WILL_DRAW
  34                                                                                 | B_PULSE_NEEDED);
  35                                                                 HyperTextView(BRect frame, const char* name,
  36                                                                         BRect textRect, uint32 resizeMask,
  37                                                                         uint32 flags = B_WILL_DRAW
  38                                                                                 | B_PULSE_NEEDED);
  39         virtual                                         ~HyperTextView();
  40
  41         virtual void                            MouseDown(BPoint where);
  42         virtual void                            MouseUp(BPoint where);
  43         virtual void                            MouseMoved(BPoint where, uint32 transit,
  44                                                                         const BMessage* dragMessage);
  45
  46                         void                            AddHyperTextAction(int32 startOffset,
  47                                                                         int32 endOffset, HyperTextAction* action);
  48
  49                         void                            InsertHyperText(const char* inText,
  50                                                                         HyperTextAction* action,
  51                                                                         const text_run_array* inRuns = NULL);
  52                         void                            InsertHyperText(const char* inText,
  53                                                                         int32 inLength, HyperTextAction* action,
  54                                                                         const text_run_array* inRuns = NULL);
  55 private:
  56                         HyperTextAction*        _ActionAt(const BPoint& where) const;
  57
  58                         struct ActionInfo;
  59                         class ActionInfoList;
  60
  61                         ActionInfoList*         fActionInfos;
  62 };
  63
  64
  65 #endif  // HYPER_TEXT_VIEW_H