/*
===========================================================================

Doom 3 BFG Edition GPL Source Code
Copyright (C) 1993-2012 id Software LLC, a ZeniMax Media company. 

This file is part of the Doom 3 BFG Edition GPL Source Code ("Doom 3 BFG Edition Source Code").  

Doom 3 BFG Edition Source Code 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 3 of the License, or
(at your option) any later version.

Doom 3 BFG Edition Source Code 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 Doom 3 BFG Edition Source Code.  If not, see <http://www.gnu.org/licenses/>.

In addition, the Doom 3 BFG Edition Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 BFG Edition Source Code.  If not, please request a copy in writing from id Software at the address below.

If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.

===========================================================================
*/
#pragma hdrstop
#include "../../idLib/precompiled.h"
#include "../Game_local.h"

void idMenuWidget_Carousel::Initialize( idMenuHandler * data ) {
	idMenuWidget::Initialize( data );

	class idCarouselRefresh : public idSWFScriptFunction_RefCounted {
	public:
		idCarouselRefresh( idMenuWidget_Carousel * _widget ) :
			widget( _widget ) {
			}

			idSWFScriptVar Call( idSWFScriptObject * thisObject, const idSWFParmList & parms ) {

				if ( widget == NULL ) {
					return idSWFScriptVar();
				}

				if ( widget->GetMoveDiff() != 0 ) {
					int diff = widget->GetMoveDiff();
					diff--;

					if ( widget->GetScrollLeft() ) {
						widget->SetViewIndex( widget->GetViewIndex() - 1 );
					} else {
						widget->SetViewIndex( widget->GetViewIndex() + 1 );
					}

					if ( diff > 0 ) {
						if ( widget->GetScrollLeft() ) {
							widget->MoveToIndex( ( widget->GetNumVisibleOptions() / 2 ) + diff );
						} else {
							widget->MoveToIndex( diff );
						}
					} else {
						widget->SetMoveDiff( 0 );
					}
				} 

				widget->Update();
				return idSWFScriptVar();
			}
	private:
		idMenuWidget_Carousel *	widget;
	};	

	if ( GetSWFObject() != NULL ) {
		GetSWFObject()->SetGlobal( "refreshCarousel", new idCarouselRefresh( this ) );
	}
}

/*
========================
idMenuWidget_Carousel::Update
========================
*/
void idMenuWidget_Carousel::Update() {

	if ( GetSWFObject() == NULL ) {
		return;
	}

	idSWFScriptObject & root = GetSWFObject()->GetRootObject();

	if ( !BindSprite( root ) ) {
		return;
	}

	int midPoint = GetNumVisibleOptions() / 2 + 1;
	for ( int optionIndex = 0; optionIndex < GetNumVisibleOptions(); ++optionIndex ) {

		int listIndex = viewIndex + optionIndex;
		if ( optionIndex >= midPoint ) {
			listIndex = viewIndex - ( optionIndex - ( midPoint - 1 ) );
		}

		idMenuWidget & child = GetChildByIndex( optionIndex );
		child.SetSpritePath( GetSpritePath(), va( "item%d", optionIndex ) );
		if ( child.BindSprite( root ) ) {
			if ( listIndex < 0 || listIndex >= GetTotalNumberOfOptions() ) {
				child.SetState( WIDGET_STATE_HIDDEN );
			} else {
				idMenuWidget_Button * const button = dynamic_cast< idMenuWidget_Button * >( &child );
				button->SetImg( imgList[ listIndex ] );
				child.Update();
				if ( optionIndex == focusIndex ) {
					child.SetState( WIDGET_STATE_SELECTING );
				} else {
					child.SetState( WIDGET_STATE_NORMAL );
				}
			}
		}
	}
}

/*
========================
idMenuWidget_Carousel::SetListImages
========================
*/
void idMenuWidget_Carousel::SetListImages( idList<const idMaterial *> & list ) {
	imgList.Clear();
	for ( int i = 0; i < list.Num(); ++i ) {
		imgList.Append( list[ i ] );
	}
}

/*
========================
idMenuWidget_Carousel::Update
========================
*/
bool idMenuWidget_Carousel::HandleAction( idWidgetAction & action, const idWidgetEvent & event, idMenuWidget * widget, bool forceHandled ) {
	return idMenuWidget::HandleAction( action, event, widget, forceHandled );
}

/*
========================
idMenuWidget_Carousel::MoveToFirstItem
========================
*/
void idMenuWidget_Carousel::MoveToFirstItem( bool instant ) {
	if ( instant ) {
		moveDiff = 0;
		viewIndex = 0;
		moveToIndex = 0;

		idSWFScriptObject & root = GetSWFObject()->GetRootObject();
		if ( BindSprite( root ) ) {
			GetSprite()->StopFrame( 1 );
		}

		Update();
	}
}

/*
========================
idMenuWidget_Carousel::MoveToLastItem
========================
*/
void idMenuWidget_Carousel::MoveToLastItem( bool instant ) {	
	if ( instant ) {
		moveDiff = 0;
		viewIndex = GetTotalNumberOfOptions() - 1;
		moveToIndex = GetTotalNumberOfOptions() - 1;

		idSWFScriptObject & root = GetSWFObject()->GetRootObject();
		if ( BindSprite( root ) ) {
			GetSprite()->StopFrame( 1 );
		}
		Update();
	}
}

/*
========================
idMenuWidget_Carousel::Update
========================
*/
void idMenuWidget_Carousel::MoveToIndex( int index, bool instant ) {

	idLib::Printf( "moveToIndex %i\n", index );

	if ( instant ) {
		viewIndex = index;
		moveDiff = 0;
		moveToIndex = viewIndex;

		idLib::Printf( "moveDiff = %i\n", moveDiff );

		idSWFScriptObject & root = GetSWFObject()->GetRootObject();
		if ( BindSprite( root ) ) {
			GetSprite()->StopFrame( 1 );
		}		

		Update();
		return;
	}

	if ( index == 0 ) {
		fastScroll = false;
		moveDiff = 0;

		idLib::Printf( "moveDiff = %i\n", moveDiff );

		viewIndex = moveToIndex;
		return;
	}

	int midPoint = GetNumVisibleOptions() / 2;
	scrollLeft = false;
	if ( index > midPoint ) {
		moveDiff = index - midPoint;
		scrollLeft = true;
	} else {
		moveDiff = index;
	}

	idLib::Printf( "moveDiff = %i\n", moveDiff );

	if ( scrollLeft ) {
		moveToIndex = viewIndex - moveDiff;
		if ( moveToIndex < 0 ) {
			moveToIndex = 0;
			int diff = 0 - moveToIndex;
			moveDiff -= diff;
		}
	} else {
		moveToIndex = viewIndex + moveDiff;
		if ( moveToIndex >= GetTotalNumberOfOptions() ) {
			moveDiff = GetTotalNumberOfOptions() - GetViewIndex() - 1;
			moveToIndex = GetTotalNumberOfOptions() - 1;
		}
	}

	idLib::Printf( "moveDiff = %i\n", moveDiff );

	if ( moveDiff != 0 ) {
		if ( moveDiff > 1 ) {
			if ( scrollLeft ) {
				GetSprite()->PlayFrame( "leftFast" );
			} else {
				GetSprite()->PlayFrame( "rightFast" );
			}
		} else {
			if ( scrollLeft ) {
				GetSprite()->PlayFrame( "left" );
			} else {
				GetSprite()->PlayFrame( "right" );
			}
		}
	}

	idLib::Printf( "moveDiff = %i\n", moveDiff );
}