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deb-goldedplus/goldlib/gall/gwinpick.h

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2000-02-25 10:15:17 +00:00
// This may look like C code, but it is really -*- C++ -*-
// ------------------------------------------------------------------
// The Goldware Library
// Copyright (C) 1990-1999 Odinn Sorensen
// ------------------------------------------------------------------
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Library General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This library 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
// Library General Public License for more details.
//
// You should have received a copy of the GNU Library General Public
// License along with this program; if not, write to the Free
// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
// MA 02111-1307, USA
// ------------------------------------------------------------------
// $Id$
// ------------------------------------------------------------------
// Pick engine.
// ------------------------------------------------------------------
#ifndef __gwinpick_h
#define __gwinpick_h
// ------------------------------------------------------------------
#include <gkbdbase.h>
// ------------------------------------------------------------------
// Constants
const int PICK_DISP = 0;
const int PICK_BAR = 1;
const int LIST_BOTTOM = -2;
const int LIST_NEARBOTTOM = -1;
const int LIST_MIDDLE = 0;
const int LIST_NEARTOP = 1;
const int LIST_TOP = 2;
// ------------------------------------------------------------------
class gwinpick {
private:
protected:
gkey key;
bool keyok;
void cursor_up();
void cursor_down();
void cursor_pageup();
void cursor_pagedown();
void cursor_first();
void cursor_last();
void cursor_scroll_up();
void cursor_scroll_down();
void update_cursor();
void display_line(bool bar=false);
void display_page();
bool default_handle_key();
inline void update() { display_page(); };
public:
uint ypos; // Window Starting Row
uint xpos; // Window Starting Column
uint ylen; // Window Height
uint xlen; // Window Width
int btype; // Window Border Type
int battr; // Window Border Color
int wattr; // Window Color
int tattr; // Window Title Color
int sattr; // Window Selection Bar Color
int hattr; // Window Highlight Color
int loattr; // Window LoAttr Color
int sbattr; // Window Scrollbar Color
const char* title; // Window Title
int helpcat; // Window Help Category
uint maximum_index; // List Entries - 1
uint minimum_index; // Minimum index in the list
uint maximum_position; // Display Pos
uint index; // List Index
uint position; // Display Pos
bool aborted; // True if aborted
bool listwrap; // True if wrap-around is supported
int direction; // 1 if next, -1 if previous
virtual void open(); // Called after window is opened
virtual void close(); // Called after window is closed
virtual void precursor(); // Called before any cursor movement
virtual void do_delayed(); // Called after a delay
virtual void print_line(uint idx, uint pos, bool isbar) = 0;
virtual void scroll(int where); // Scroll page
virtual bool handle_key(); // Handles keypress
virtual bool is_selectable(uint idx); // returns true if selectable
void display_bar() { display_line(true); }
void center(int listmode);
int run_picker();
gwinpick();
virtual ~gwinpick() { };
};
// ------------------------------------------------------------------
#endif
// ------------------------------------------------------------------