-- Id: 6348
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=15639

--+------------------------------------------------------------------+
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--|                                            http://fxcodebase.com |
--+------------------------------------------------------------------+
--|                                      Developed by : Mario Jemic  |
--|                                          mario.jemic@gmail.com   |
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--+------------------------------------------------------------------+

function Init()
    indicator:name("Bar Height Label with Smoothing");
    indicator:description("Shows Candle / Body Height in Pips");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);
    indicator.parameters:addGroup("Calculation");  
    indicator.parameters:addString("Type", "Body", "", "Body");
    indicator.parameters:addStringAlternative("Type", "Body", "", "Body");   
	indicator.parameters:addStringAlternative("Type", "Candle", "", "Candle");
	indicator.parameters:addStringAlternative("Type", "Open/Close + 2 x Wicks ", "", "Open/Close + 2 x Wicks");
	
	
	 indicator.parameters:addBoolean("Use", "Use Smoothing", "" , true); 
	indicator.parameters:addInteger("Period", "Averege Period", "First Averege  Period", 20);
	indicator.parameters:addString("Method", "Method", "Method" , "MVA");
    indicator.parameters:addStringAlternative("Method", "MVA", "MVA" , "MVA");
    indicator.parameters:addStringAlternative("Method", "EMA", "EMA" , "EMA");
	indicator.parameters:addStringAlternative("Method", "LWMA", "LWMA" , "LWMA");
    indicator.parameters:addStringAlternative("Method", "TMA", "TMA" , "TMA");
    indicator.parameters:addStringAlternative("Method", "SMMA", "SMMA" , "SMMA");
    indicator.parameters:addStringAlternative("Method", "KAMA", "KAMA" , "KAMA");   
    indicator.parameters:addStringAlternative("Method", "WMA", "WMA" , "WMA");

	
	indicator.parameters:addGroup("Style");
    indicator.parameters:addColor("Label", "Label Color", "", core.rgb(0, 0, 0));
	indicator.parameters:addInteger("ArrowSize", "ArrowSize", "", 7);

end

-- Indicator instance initialization routine
-- Processes indicator parameters and creates output streams
-- TODO: Refine the first period calculation for each of the output streams.
-- TODO: Calculate all constants, create instances all subsequent indicators and load all required libraries
-- Parameters block
local Type;
local first;
local source = nil;
 local font;
 local ArrowSize;
 local id =0;
 local Label;
 local LAST = nil;
 local Method;
 local Period;
 local Raw;
 local Use;
 local MA;
-- Streams block

-- Routine
function Prepare(nameOnly) 
    Use = instance.parameters.Use;
    Method = instance.parameters.Method;
	Period = instance.parameters.Period;
    Label = instance.parameters.Label;
    ArrowSize = instance.parameters.ArrowSize;
    Type = instance.parameters.Type;
    source = instance.source;
    first = source:first();
	id=0;
	LAST = nil;
    local name = profile:id() .. "(" .. source:name() .. ", " .. tostring(Type) .. ")";
	instance:name(name);
	if nameOnly then
		return;
	end
	
	Raw = instance:addInternalStream(0, 0);
	
	if Use then
    assert(core.indicators:findIndicator(Method) ~= nil, Method .. " indicator must be installed");
	MA= core.indicators:create(Method, Raw, Period);
	first = math.max(first, MA.DATA:first());
	end
	
	 font = core.host:execute("createFont", "Arial", ArrowSize, true, false);

end

-- Indicator calculation routine
-- TODO: Add your code for calculation output values
function Update(period, mode)
    if period < first or not  source:hasData(period) then
	id=0;
	return;
	end
		 
	
	if source:serial(period) ~= LAST then
	id = id+1;
	LAST = source:serial(period);
	end
	
	 if Type == "Body" then
	Raw[period] =  math.abs(source.close[period] - source.open[period] ) / source:pipSize();
	elseif Type == "Candle" then
	Raw[period] =   math.abs(source.high[period] - source.low[period] ) / source:pipSize();
	else
	Raw[period] =   (source.high[period] -source.low[period]  +  (source.high[period] - math.max(source.close[period],source.open[period] ) )
		 +  ( math.min(source.close[period],source.open[period] ) - source.low[period]  )) /  source:pipSize();
	end
	
	  
	
	  if Use then
	    MA:update(mode);
	    core.host:execute("drawLabel1", source:serial(period), source:date(period), core.CR_CHART, source.high[period], core.CR_CHART, core.H_Center, core.V_Top,
                                                font, Label, string.format("%." .. 2 .. "f",  MA.DATA[period]));
	  
	  else
	  
	   core.host:execute("drawLabel1", source:serial(period), source:date(period), core.CR_CHART, source.high[period], core.CR_CHART, core.H_Center, core.V_Top,
                                                font, Label, string.format("%." .. 2 .. "f",  Raw[period]));
	  end
	  
	  
		
       
		 
    end

	
function ReleaseInstance()
       core.host:execute("deleteFont", font);      
end