/*
	Author: Garth de Wet (LH)

	Description:
		Depending on the passed value, either scrolls down through the list or up.

	Parameters:
		NUMBER - Amount to increase current interaction target

	Returns:
		Nothing

	Example:
		1 call FUNC(MoveDown);
		-1 call FUNC(MoveDown);
*/
#include "script_component.hpp"

#define CLAMP(x,low,high) (if(x > high)then{high}else{if(x < low)then{low}else{x}})
if (isNil QGVAR(MainButton)) exitWith{};
if (isNil QGVAR(Buttons)) exitWith{};
_count = (count GVAR(Buttons))- 1;
GVAR(SelectedButton) = CLAMP(GVAR(SelectedButton) + _this, 0, _count);

_target = GVAR(Target);
_player = ACE_player;
_vehicle = vehicle _player;

disableSerialization;
_dlgInteractionDialog = uiNamespace getVariable QGVAR(Flow_Display);
_top = GVAR(SelectedButton) - 2;
_i = 0;
while {_i <= 4} do {
	_index =_i + _top;
	_ctrl = _dlgInteractionDialog displayCtrl (1200 + _i);
	if (_index >= 0 && {_index <= _count}) then {
		_action = GVAR(Buttons) select _index;
		_ctrl ctrlShow true;
		_ctrl ctrlSetText (_action select 5);
		_color = [1,1,1,1];
		if !([_target, _player] call (_action select 2)) then {
			_color = [0.3,0.3,0.3,0.8];
		};
		if (_i == 0 || _i == 4) then {
			_color set [3, 0.5];
		};
		if (_i == 1 || _i == 3) then {
			_color set [3, 0.75];
		};
		_ctrl ctrlSetTextColor _color;
	}else{
		_ctrl ctrlShow false;
	};
	_i = _i + 1;
};

_ctrl = _dlgInteractionDialog displayCtrl 1000;
_ctrl ctrlSetText ((GVAR(Buttons) select GVAR(SelectedButton)) select 0);
_ctrl = _dlgInteractionDialog displayCtrl 1100;
_current = (GVAR(Buttons) select GVAR(SelectedButton));
_infoText = "";
if !([_target, _player] call (_current select 2)) then {
	_infoText = "Unavailable";
};
_ctrl ctrlSetText _infoText;
_ctrl ctrlShow (_infoText != "");