/*
    TUIpeer works in conjunction with an implementation of java.awt.Toolkit
    to provide a Text User Interface for programs using the Java AWT.

    Copyright (C) 1997-2000  Stuart D. Gathman <stuart@bmsi.com>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#pragma interface
#include <attrib.h>
#include <Display.h>
#include <Controller.h>
#include <string>

struct BrowserBase: virtual Controller {
  enum Dir { DIR_UP,DIR_DOWN,DIR_LEFT,DIR_RIGHT,DIR_NONE };
  enum {
    EDIT_INSLINE = 100, EDIT_DELLINE, EDIT_MARKBLK, EDIT_PASTE, EDIT_GRAPH,
    EDIT_FWD, EDIT_REV, EDIT_REFORM, EDIT_SEARCH, EDIT_AGAIN, EDIT_WORDWRAP,
    FILE_PRINT = 50
  };
  BrowserBase();
  ~BrowserBase();
  void key(int);
  void cmd(int);
  virtual CHTYPE operator()(int row,int col) const = 0;	// inspect
  virtual void getyx(int &, int &) const = 0;	// get logical cursor location
  virtual void move(int row, int col) = 0;	// move point, update topline
  virtual Dimension size() const = 0;		// size of window
  virtual void sync();				// update desc
  virtual void print() { }
  virtual void search(const char *) { }
  string getname() const { return name; }
  void move(Dir);				// move in a direction
protected:
  string name,pat;
  int topline, leftcol;				// updated by move()
  char desc[40];
  mutable bool modified;
private:
  BrowserBase(const BrowserBase &);
  BrowserBase&operator=(const BrowserBase &);
};

struct EditorBase: virtual BrowserBase {
  EditorBase();
  ~EditorBase();
  void key(int);
  void cmd(int);
  virtual void addch(char) = 0;			// replace
  virtual void insch(char) = 0;			// insert
  virtual void delch() = 0;			// delete
  virtual void insertln(int) = 0;
  virtual void deleteln(int) = 0;
  virtual void sync();				// update frame
  virtual void clrtoeol() = 0;
  void linemove(Dir);
  void linedel();	// undraw line under cursor
  static class Menu &editMenu();
  bool commandMode() const { return cmdmode; }
  void commandMode(bool m) { cmdmode = m; }
protected:
  char linemode;
  bool readonly;
  static bool compose;
  static const unsigned char graphics[48];
private:
  static bool cmdmode;
  EditorBase(const EditorBase &);
  EditorBase&operator=(const EditorBase &);
  int linebits() const;	// line drawing bits under cursor
  int composeChar(int ky);
  Dir last_dir;
};