src/apps/deskcalc/ExpressionTextView.h

   1 /*
   2  * Copyright 2006 Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Stephan Aßmus, superstippi@gmx.de
   7  */
   8 #ifndef EXPRESSION_TEXT_VIEW_H
   9 #define EXPRESSION_TEXT_VIEW_H
  10
  11
  12 #include <List.h>
  13 #include <String.h>
  14
  15 #include "InputTextView.h"
  16
  17
  18 class CalcView;
  19
  20 class ExpressionTextView : public InputTextView {
  21  public:
  22                                                                 ExpressionTextView(BRect frame,
  23                                                                         CalcView* calcView);
  24         virtual                                         ~ExpressionTextView();
  25
  26         // BView
  27         virtual void                            MakeFocus(bool focused = true);
  28         virtual void                            KeyDown(const char* bytes, int32 numBytes);
  29
  30         virtual void                            MouseDown(BPoint where);
  31
  32         // TextView
  33         virtual void                            GetDragParameters(BMessage* dragMessage,
  34                                                                         BBitmap** bitmap, BPoint* point,
  35                                                                         BHandler** handler);
  36                         void                            SetTextRect(BRect rect);
  37
  38         // InputTextView
  39         virtual void                            RevertChanges();
  40         virtual void                            ApplyChanges();
  41
  42         // ExpressionTextView
  43                         void                            AddKeypadLabel(const char* label);
  44
  45                         void                            SetExpression(const char* expression);
  46                         void                            SetValue(BString value);
  47
  48                         void                            BackSpace();
  49                         void                            Clear();
  50
  51                         void                            AddExpressionToHistory(const char* expression);
  52                         void                            PreviousExpression();
  53                         void                            NextExpression();
  54
  55                         void                            LoadSettings(const BMessage* archive);
  56                         status_t                        SaveSettings(BMessage* archive) const;
  57
  58  private:
  59                         CalcView*                       fCalcView;
  60                         BString                         fKeypadLabels;
  61
  62                         BList                           fPreviousExpressions;
  63                         int32                           fHistoryPos;
  64                         BString                         fCurrentExpression;
  65                         BString                         fCurrentValue;
  66
  67                         bool                            fChangesApplied;
  68 };
  69
  70 #endif // EXPRESSION_TEXT_VIEW_H