gdb/tui/tui-regs.h

   1 /* TUI display registers in window.
   2
   3    Copyright (C) 1998-2019 Free Software Foundation, Inc.
   4
   5    Contributed by Hewlett-Packard Company.
   6
   7    This file is part of GDB.
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 3 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef TUI_TUI_REGS_H
  23 #define TUI_TUI_REGS_H
  24
  25 #include "tui/tui-data.h"
  26
  27 /* A data item window.  */
  28
  29 struct tui_data_item_window : public tui_gen_win_info
  30 {
  31   tui_data_item_window ()
  32     : tui_gen_win_info (DATA_ITEM_WIN)
  33   {
  34   }
  35
  36   DISABLE_COPY_AND_ASSIGN (tui_data_item_window);
  37
  38   tui_data_item_window (tui_data_item_window &&) = default;
  39
  40   void rerender () override;
  41
  42   void refresh_window () override;
  43
  44   const char *name = nullptr;
  45   /* The register number, or data display number.  */
  46   int item_no = -1;
  47   bool highlight = false;
  48   gdb::unique_xmalloc_ptr<char> content;
  49 };
  50
  51 /* The TUI registers window.  */
  52 struct tui_data_window : public tui_win_info
  53 {
  54   tui_data_window ()
  55     : tui_win_info (DATA_WIN)
  56   {
  57   }
  58
  59   DISABLE_COPY_AND_ASSIGN (tui_data_window);
  60
  61   void refresh_window () override;
  62
  63   const char *name () const override
  64   {
  65     return DATA_NAME;
  66   }
  67
  68   void check_register_values (struct frame_info *frame);
  69
  70   void show_registers (struct reggroup *group);
  71
  72   struct reggroup *get_current_group () const
  73   {
  74     return current_group;
  75   }
  76
  77 protected:
  78
  79   void do_scroll_vertical (int num_to_scroll) override;
  80   void do_scroll_horizontal (int num_to_scroll) override
  81   {
  82   }
  83
  84   void rerender () override;
  85
  86 private:
  87
  88   /* Display the registers in the content from 'start_element_no'
  89      until the end of the register content or the end of the display
  90      height.  No checking for displaying past the end of the registers
  91      is done here.  */
  92   void display_registers_from (int start_element_no);
  93
  94   /* Display the registers starting at line line_no in the data
  95      window.  Answers the line number that the display actually
  96      started from.  If nothing is displayed (-1) is returned.  */
  97   int display_registers_from_line (int line_no);
  98
  99   /* Return the index of the first element displayed.  If none are
 100      displayed, then return -1.  */
 101   int first_data_item_displayed ();
 102
 103   /* Display the registers in the content from 'start_element_no' on
 104      'start_line_no' until the end of the register content or the end
 105      of the display height.  This function checks that we won't
 106      display off the end of the register display.  */
 107   void display_reg_element_at_line (int start_element_no, int start_line_no);
 108
 109   void show_register_group (struct reggroup *group,
 110                             struct frame_info *frame,
 111                             int refresh_values_only);
 112
 113   /* Answer the number of the last line in the regs display.  If there
 114      are no registers (-1) is returned.  */
 115   int last_regs_line_no () const;
 116
 117   /* Answer the line number that the register element at element_no is
 118      on.  If element_no is greater than the number of register
 119      elements there are, -1 is returned.  */
 120   int line_from_reg_element_no (int element_no) const;
 121
 122   /* Answer the index of the first element in line_no.  If line_no is
 123      past the register area (-1) is returned.  */
 124   int first_reg_element_no_inline (int line_no) const;
 125
 126   /* Delete all the item windows in the data window.  This is usually
 127      done when the data window is scrolled.  */
 128   void delete_data_content_windows ();
 129
 130   void erase_data_content (const char *prompt);
 131
 132   /* Windows that are used to display registers.  */
 133   std::vector<tui_data_item_window> regs_content;
 134   int regs_column_count = 0;
 135   struct reggroup *current_group = nullptr;
 136 };
 137
 138 #endif /* TUI_TUI_REGS_H */