-- Id: 25408
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=68608

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function Init()
    indicator:name("Average Range");
    indicator:description("");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Oscillator);
    indicator.parameters:addInteger("adr_period", "Period", "", 10);
    indicator.parameters:addColor("color", "Color", "", core.rgb(255, 0, 0));
end

local dr;
local loaded = false;
local adr;
local out;
local loopback;

function Prepare(nameOnly)
    source = instance.source;
    local name = string.format("%s(%s)", profile:id(), source:name());
    instance:name(name);
    if nameOnly then
        return ;
    end
	
    dr = instance:addInternalStream(0, 0);
    adr = core.indicators:create("MVA", dr, instance.parameters.adr_period);
    out = instance:addStream("DATA", core.Line, "AR", "AR", instance.parameters.color, 0, 0);
    out:setPrecision(math.max(2, instance.source:getPrecision()));
end

function Update(period, mode)
    dr[period] = source.high[period] - source.low[period];
    adr:update(mode);
    out[period] = adr.DATA[period];
end