/***************************************************************************
                               form_field.cpp
                             -------------------
    begin                : Tue Jul 30 2002
    copyright            : (C) 2002 - 2003 by Roland Riegel
    email                : feedback@roland-riegel.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#include "form_field.h"
#include "window.h"

Field::Field( int x, int y, int width, int height ) : m_field(0)
{
	m_field = new_field( height, width, y, x, 0, 0 );
}

Field::~Field()
{
	free_field( m_field );
}

void Field::setBuffer( const char* new_buffer )
{
	set_field_buffer( m_field, 0, new_buffer );
}

const char* Field::buffer()
{
	return field_buffer( m_field, 0 );
}

void Field::move( int x, int y )
{
	move_field( m_field, y, x );
}

void Field::setVisible( bool new_visible )
{
	set_field_opts( m_field, new_visible ? field_opts( m_field ) | O_VISIBLE : field_opts( m_field ) & ~O_VISIBLE );
}

bool Field::visible()
{
	return ( field_opts( m_field ) & O_VISIBLE ) == O_VISIBLE;
}

void Field::setEnabled( bool new_enabled )
{
	set_field_opts( m_field, new_enabled ? field_opts( m_field ) | O_ACTIVE : field_opts( m_field ) & ~O_ACTIVE );
}

bool Field::enabled()
{
	return ( field_opts( m_field ) & O_ACTIVE ) == O_ACTIVE;
}

void Field::setIntegerField( int min, int max )
{
	set_field_type( m_field, TYPE_INTEGER, 0, min, max );
}

void Field::setEnumField( const char* elements[] )
{
	set_field_type( m_field, TYPE_ENUM, elements, false, false );
}

void Field::setFixed( bool new_fixed )
{
	set_field_opts( m_field, new_fixed ? field_opts( m_field ) & ~O_EDIT : field_opts( m_field ) | O_EDIT );
}

bool Field::fixed()
{
	return ( field_opts( m_field ) & O_EDIT ) != O_EDIT;
}

void Field::setBlankWithFirstChar( bool new_blankwithfirstchar )
{
	set_field_opts( m_field, new_blankwithfirstchar ? field_opts( m_field ) | O_BLANK : field_opts( m_field ) & ~O_BLANK );
}

bool Field::blankWithFirstChar()
{
	return ( field_opts( m_field ) & O_BLANK ) == O_BLANK;
}

void Field::setAutoSkip( bool new_autoskip )
{
	set_field_opts( m_field, new_autoskip ? field_opts( m_field ) | O_AUTOSKIP : field_opts( m_field ) & ~O_AUTOSKIP );
}

bool Field::autoSkip()
{
	return ( field_opts( m_field ) & O_AUTOSKIP ) == O_AUTOSKIP;
}

void Field::setValidateBlank( bool new_validateblank )
{
	set_field_opts( m_field, new_validateblank ? field_opts( m_field ) & ~O_NULLOK : field_opts( m_field ) | O_NULLOK );
}

bool Field::validateBlank()
{
	return ( field_opts( m_field ) & O_NULLOK ) != O_NULLOK;
}

void Field::setNewPage( bool new_newpage )
{
	set_new_page( m_field, new_newpage );
}

bool Field::newPage()
{
	return new_page( m_field );
}

bool operator==( const Field& field1, const Field& field2 )
{
	return field1.m_field == field2.m_field;
}

bool operator==( const Field& field1, const FIELD* field2 )
{
	return field1.m_field == field2;
}


Form::Form( Slots* slots ) : m_slots( slots ), m_form(0), m_visible( false )
{
	m_instances.push_back( this );
}

Form::~Form()
{
	for( list<Form *>::iterator i = m_instances.begin(); i != m_instances.end(); i++ )
	{
		if( *i == this )
		{
			m_instances.erase(i);
			break;
		}
	}
}

vector<Field *>& Form::fields()
{
	return m_fields;
}
	
void Form::show( Window* main_window, SubWindow* sub_window )
{
	m_curses_fields = new FIELD* [ m_fields.size() ];
	vector<Field *>::const_iterator r = m_fields.begin(); 
	int i = 0;
	while( r != m_fields.end() )
	{
		m_curses_fields[i] = (*r) -> m_field;
		r++; i++;
	}
	
	m_curses_fields[ m_fields.size() ] = 0;
	m_form = new_form( m_curses_fields );
	
	if( ! m_form ) return;
	
	set_form_win( m_form, main_window -> m_window );
	set_form_sub( m_form, sub_window -> m_window );
	set_field_term( m_form, fieldChanged );
	
	post_form( m_form );
	
	m_visible = true;
}

void Form::hide()
{
	unpost_form( m_form );
	free_form( m_form );
	m_form = 0;
	
	delete[] m_curses_fields;
	m_curses_fields = 0;
	
	m_visible = false;
}

bool Form::visible()
{
	return m_visible;
}

void Form::processKey( int key )
{
	if( m_form )
		form_driver( m_form, key );
}

int Form::page()
{
	if( ! m_form ) return 0;
	return form_page( m_form ) + 1;
}

int Form::countPages()
{
	int pages = 0;
	for( vector<Field *>::const_iterator i = m_fields.begin(); i != m_fields.end(); i++ )
	{
		if( (*i) -> newPage() ) pages++;
	}
	return pages;
}

void Form::fieldChanged( FORM* form )
{
	for( list<Form *>::iterator i = m_instances.begin(); i != m_instances.end(); i++ )
		if( (*i) -> m_form == form && (*i) -> m_slots )
		{
			for( vector<Field *>::const_iterator j = (*i) -> m_fields.begin(); j != (*i) -> m_fields.end(); j++ )
				if( (*j) -> m_field == current_field( form ) )
					(*i) -> m_slots -> slot_fieldChanged( *j );
			break;
		}
}

list<Form *> Form::m_instances = list<Form *>();