/* Copyright (C) 2004 Bart
 *
 *  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 Library 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */
 
#include "../include/Dialog_Base_Partition.h"

namespace GParted
{
	
Dialog_Base_Partition::Dialog_Base_Partition(   )
{
	this ->set_has_separator( false ) ;
	
	frame_resizer_base = NULL;
	GRIP = false ;
	this -> fixed_start = false ;
	this -> set_resizable( false );
	
	//pack resizer hbox
	this ->get_vbox() ->pack_start( hbox_resizer, Gtk::PACK_SHRINK );
	
	//add label_minmax
	this ->get_vbox() ->pack_start( label_minmax, Gtk::PACK_SHRINK );
	
	//pack hbox_main
	this ->get_vbox() ->pack_start( hbox_main, Gtk::PACK_SHRINK );
	
	//put the vbox with resizer stuff (cool widget and spinbuttons) in the hbox_main
	hbox_main .pack_start( vbox_resize_move, Gtk::PACK_EXPAND_PADDING);
	
		
	//fill table
	table_resize .set_border_width( 5 ) ;
	table_resize .set_row_spacings( 5 ) ;
	hbox_table.pack_start( table_resize, Gtk::PACK_EXPAND_PADDING ) ;
	
	hbox_table .set_border_width( 5 ) ;
	vbox_resize_move .pack_start( hbox_table, Gtk::PACK_SHRINK );
	
	//add spinbutton_before
	label_temp = manage( new Gtk::Label( (Glib::ustring) _( "Free Space Preceding (MB) :") + " \t" ) ) ;
	table_resize.attach( *label_temp, 0,1,0,1,Gtk::SHRINK);
		
	spinbutton_before .set_numeric( true );
	spinbutton_before .set_increments( 1, 100 );
	table_resize.attach( spinbutton_before, 1,2,0,1,Gtk::FILL);
	
	//add spinbutton_size
	label_temp = manage( new Gtk::Label( _( "New Size (MB) :") ) ) ;
	label_temp ->set_alignment( Gtk::ALIGN_LEFT   );
	table_resize.attach( *label_temp, 0,1,1,2 );

	spinbutton_size .set_numeric( true );
	spinbutton_size .set_increments( 1, 100 );
	table_resize.attach( spinbutton_size, 1,2,1,2,Gtk::FILL);
	
	//add spinbutton_after
	label_temp = manage( new Gtk::Label( _( "Free Space Following (MB) :") ) ) ;
	label_temp ->set_alignment( Gtk::ALIGN_LEFT   );
	table_resize.attach( *label_temp, 0,1,2,3 ) ;
	
	spinbutton_after .set_numeric( true );
	spinbutton_after .set_increments( 1, 100 );
	table_resize.attach( spinbutton_after, 1,2,2,3,Gtk::FILL);
	
	
	if ( ! fixed_start )
		before_value = spinbutton_before .get_value() ;
	
	//connect signalhandlers of the spinbuttons
	if ( ! fixed_start )
		spinbutton_before .signal_value_changed().connect( sigc::bind<SPINBUTTON>( sigc::mem_fun( *this, &Dialog_Base_Partition::on_spinbutton_value_changed), BEFORE) ) ;
	
	spinbutton_size .signal_value_changed().connect( sigc::bind<SPINBUTTON>( sigc::mem_fun( *this, &Dialog_Base_Partition::on_spinbutton_value_changed), SIZE) ) ;
	spinbutton_after .signal_value_changed().connect( sigc::bind<SPINBUTTON>( sigc::mem_fun( *this, &Dialog_Base_Partition::on_spinbutton_value_changed), AFTER) ) ;
	
	//pack label which warns about small differences in values..
	label_temp = manage( new Gtk::Label( ) );
	label_temp ->set_markup( "\n <i>" + (Glib::ustring) _( "NOTE: values on disk may differ slightly from the values entered here.") + "</i>" );
	label_temp ->set_alignment( Gtk::ALIGN_LEFT ) ;
	this ->get_vbox() ->pack_start( *label_temp, Gtk::PACK_SHRINK );
	
	this ->get_vbox() ->pack_start( *( manage( new Gtk::Label( "") )  ), Gtk::PACK_SHRINK ); //filler :-P
		
	this->add_button( Gtk::Stock::CANCEL,Gtk::RESPONSE_CANCEL );
	this ->show_all_children() ;
}

void Dialog_Base_Partition::Set_Resizer( bool extended )
{
	if ( extended )
	{
		frame_resizer_base = new Frame_Resizer_Extended(  ) ;
	}
	else
	{
		frame_resizer_base = new Frame_Resizer_Base(  ) ;
		frame_resizer_base ->signal_move .connect ( sigc::mem_fun( this, &Dialog_Base_Partition::on_signal_move) );
	}
	
	frame_resizer_base ->set_border_width( 5 ) ;
	frame_resizer_base ->set_shadow_type(Gtk::SHADOW_ETCHED_OUT);
		
	//connect signals
	frame_resizer_base ->signal_resize .connect ( sigc::mem_fun( this, &Dialog_Base_Partition::on_signal_resize) );
		
	hbox_resizer .pack_start( *frame_resizer_base, Gtk::PACK_SHRINK );
	
	this ->show_all_children() ;
}

Partition Dialog_Base_Partition::Get_New_Partition() 
{
	//no need to set the start of a fixed_start one ;-)
	if ( ! fixed_start )
		selected_partition.sector_start = START + (Sector) spinbutton_before .get_value() * MEGABYTE ;	
	
	selected_partition.sector_end = selected_partition.sector_start + (Sector) spinbutton_size.get_value() * MEGABYTE ;

	//due to loss of precision during calcs from Sector -> MB and back, it is possible the new partition thinks it's bigger then it can be. Here we solve this.
	if ( selected_partition.sector_start < START )
		selected_partition.sector_start = START ;
	if ( selected_partition.sector_end > (START + total_length) ) 
		selected_partition.sector_end = START + total_length ;
	
	//grow a bit into small freespace ( < 1MB ) 
	if (  (selected_partition.sector_start - START) < MEGABYTE )
		selected_partition.sector_start = START ;
	if ( ( START + total_length - selected_partition.sector_end ) < MEGABYTE )
		selected_partition.sector_end = START + total_length ;
	
	//set new value of unused..
	if ( selected_partition .sectors_used != -1 )
		selected_partition .sectors_unused = ( selected_partition .sector_end - selected_partition .sector_start)  - selected_partition .sectors_used ;
	
	return selected_partition ;
}

void Dialog_Base_Partition::Set_Confirm_Button( CONFIRMBUTTON button_type ) 
{ 
	switch( button_type )
	{
		case NEW				:	this->add_button( Gtk::Stock::ADD,Gtk::RESPONSE_OK );
											break ;
		case RESIZE_MOVE	:	if ( selected_partition.filesystem == "ext2" || selected_partition.filesystem == "ext3" ) 
												label_temp = manage( new Gtk::Label( _("Resize") ) ) ;
											else
												label_temp = manage( new Gtk::Label( _("Resize/Move") ) ) ;
											
											image_temp = manage( new Gtk::Image( Gtk::Stock::GOTO_LAST, Gtk::ICON_SIZE_BUTTON ) );
											hbox_resize_move .pack_start( *image_temp, Gtk::PACK_EXPAND_PADDING ) ;
											hbox_resize_move .pack_start( *label_temp, Gtk::PACK_EXPAND_PADDING ) ;
											button_resize_move .add( hbox_resize_move ) ;
														
											this ->add_action_widget ( button_resize_move,Gtk::RESPONSE_OK ) ;
											button_resize_move .set_sensitive(  false ) ;
											break ;
			
		case PASTE				:	this->add_button( Gtk::Stock::PASTE,Gtk::RESPONSE_OK );
											break ;
				
	}
	
}

void Dialog_Base_Partition::on_signal_move( int x_start, int x_end )
{  
	GRIP = true ;

	if ( x_start == 0 )
		spinbutton_before .set_value( 0 ) ;
	else
		spinbutton_before .set_value( x_start * MB_PER_PIXEL ) ;
	
	if ( x_end == 500 )
	{
		spinbutton_after .set_value(0 ) ;
		spinbutton_before .set_value( TOTAL_MB - spinbutton_size .get_value() ) ;
	}
	else
		spinbutton_after .set_value( TOTAL_MB - spinbutton_before .get_value() - spinbutton_size .get_value() ) ;
	
	this ->x_start = x_start ;
	this ->x_end = x_end ;
	
	Check_Change() ;
	
	GRIP = false ;
}

void Dialog_Base_Partition::on_signal_resize( int x_start, int x_end, Frame_Resizer_Base::ArrowType arrow)
{  
	GRIP = true ;
	
	//check for upper/lower limit fat16
	if ( selected_partition.filesystem == "fat16" && ( ( x_end - x_start ) * MB_PER_PIXEL > 1023 || ( x_end - x_start ) * MB_PER_PIXEL < 32 ) )
	{ 
		frame_resizer_base ->set_x_start( this ->x_start );
		frame_resizer_base ->set_x_end( this ->x_end );
				
		frame_resizer_base ->Draw_Partition() ;
		GRIP = false ;
		return ;
	}
	
	//check for lower limit fat32
	if ( selected_partition.filesystem == "fat32" &&  ( x_end - x_start ) * MB_PER_PIXEL < 256 )
	{ 
		frame_resizer_base ->set_x_start( this ->x_start );
		frame_resizer_base ->set_x_end( this ->x_end );
				
		frame_resizer_base ->Draw_Partition() ;
		GRIP = false ;
		return ;
	}
	
	
	
	spinbutton_size .set_value( ( x_end - x_start ) * MB_PER_PIXEL ) ;
	
	fixed_start ? before_value = 0 : before_value = spinbutton_before .get_value() ;
	
	if ( arrow == Frame_Resizer_Base::ARROW_RIGHT ) //don't touch freespace before, leave it as it is
	{
		if ( x_end == 500 )
		{
			spinbutton_after .set_value(0 ) ;
			spinbutton_size .set_value( TOTAL_MB - before_value ) ;
		}
		else
			spinbutton_after .set_value( TOTAL_MB - before_value - spinbutton_size .get_value() ) ;
	}
	else if ( arrow == Frame_Resizer_Base::ARROW_LEFT ) //don't touch freespace after, leave it as it is
	{
		if ( x_start == 0 )
		{
			spinbutton_before .set_value( 0 );
			spinbutton_size .set_value( TOTAL_MB - spinbutton_after.get_value() ) ;
		}
		else
			spinbutton_before .set_value( TOTAL_MB - spinbutton_size .get_value() - spinbutton_after .get_value() ) ;
	}
		
	this ->x_start = x_start ;
	this ->x_end = x_end ;
	
	Check_Change() ;
	
	GRIP = false ;
}

void Dialog_Base_Partition::on_spinbutton_value_changed( SPINBUTTON spinbutton  )
{  
	if ( ! GRIP )
	{
		//i expect libparted soon to be able to move startpoint of ext2/3 as well, so everything is ready for it. Till then this rudimentary check
		fixed_start ? before_value = 0 : before_value = spinbutton_before .get_value() ;
			
		//Balance the spinbuttons
		switch ( spinbutton )
		{
			case BEFORE	:	spinbutton_after.set_value( TOTAL_MB - spinbutton_size.get_value() - before_value) ;
										spinbutton_size.set_value( TOTAL_MB - before_value - spinbutton_after.get_value( ) ) ;
							
										break;
			case SIZE			:	spinbutton_after.set_value( TOTAL_MB - before_value - spinbutton_size.get_value() );
										if ( ! fixed_start )
											spinbutton_before .set_value( TOTAL_MB - spinbutton_size.get_value() - spinbutton_after.get_value() );
				
										break;
			case AFTER		:	if ( ! fixed_start )
											spinbutton_before .set_value( TOTAL_MB - spinbutton_size.get_value() - spinbutton_after.get_value() );
			
										spinbutton_size.set_value( TOTAL_MB - before_value - spinbutton_after.get_value( ) ) ;
				
										break;
		}
			
		
		//And apply the changes to the visual view...
		if ( ! fixed_start )
			frame_resizer_base ->set_x_start( (int)  (spinbutton_before .get_value() / MB_PER_PIXEL + 0.5)  ) ;
		
		frame_resizer_base ->set_x_end( (int)  (  500 - ( (double) spinbutton_after .get_value() / MB_PER_PIXEL ) + 0.5 ) ) ;
		
		this ->x_start = frame_resizer_base ->get_x_start() ;
		this ->x_end = frame_resizer_base ->get_x_end() ;
		
		frame_resizer_base ->Draw_Partition() ;
		
		Check_Change() ;
	}
}

void Dialog_Base_Partition::Check_Change()
{
	if  ( 	ORIG_BEFORE 	==	spinbutton_before .get_value_as_int()	&&
			ORIG_SIZE			==	spinbutton_size .get_value_as_int()		&& 
			ORIG_AFTER		==	spinbutton_after .get_value_as_int() 
		)
		button_resize_move .set_sensitive( false ) ;
	else
		button_resize_move .set_sensitive( true ) ;
}

Dialog_Base_Partition::~Dialog_Base_Partition() 
{
	if ( frame_resizer_base )
		delete frame_resizer_base ;
}

} //GParted