-- Id: 2532
-- More information about this indicator can be found at:
-- http://fxcodebase.com/code/viewtopic.php?f=17&t=2717

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function Init()
    indicator:name("Multi Time Frame Overview");
    indicator:description("Multi Time Frame Overview");
    indicator:requiredSource(core.Bar);
    indicator:type(core.Indicator);	   
	
	Parameters (1 , "m5" );
	Parameters (2 , "H1" );
	Parameters (3 , "H4" );
	Parameters (4 , "D1" );
	
	indicator.parameters:addGroup("Show MA");	
	Include(1)
	Include(2)
	Include(3)
	Include(4)
	
	Style (1,core.rgb(0, 255, 0));
	Style (2,core.rgb(255, 0, 0));
	Style (3,core.rgb(0, 0, 255));
	Style (4,core.rgb(128, 128, 128));
	
	indicator.parameters:addGroup("Common Parameters");	
	indicator.parameters:addString("Type", "Indicator Type", "", "MA");
    indicator.parameters:addStringAlternative("Type", "MA", "", "MA");
    indicator.parameters:addStringAlternative("Type", "PRICE", "", "PRICE");
	 indicator.parameters:addStringAlternative("Type", "MA/PRICE", "", "BOTH");
	
	
	indicator.parameters:addGroup("Style");
    indicator.parameters:addColor("UP", "Color for Up Trend", "", core.rgb(0, 255, 0));
    indicator.parameters:addColor("DN", "Color for Down Trend", "", core.rgb(255, 0, 0));	
	indicator.parameters:addColor("NO", "Color for Unclear Trend", "", core.rgb(255, 128, 0));
	indicator.parameters:addColor("Label", "Label Color", "", core.rgb(0, 0, 0));
	indicator.parameters:addDouble("Size", "As % of Cell", "", 90);
	indicator.parameters:addDouble("HSize", "Horizontal indicator size as % of screen", "", 50, 50, 100);
	
	indicator.parameters:addInteger("VShift", "Vertical Shift", "", 0);
	
	
end

function Include(id)
indicator.parameters:addBoolean("Show"..id, "Show ".. id.. " MA Line", "", false);
end


function Parameters (id , FRAME )

    indicator.parameters:addGroup(id ..". Line Calculation");
    indicator.parameters:addInteger("N"..id, "MA Periods", "", 14);
    indicator.parameters:addString("MA"..id, "MA Smoothing Method", "The methods marked by an asterisk (*) require the appropriate indicators to be loaded.", "MVA");
    indicator.parameters:addStringAlternative("MA"..id, "MVA", "", "MVA");
    indicator.parameters:addStringAlternative("MA"..id, "EMA", "", "EMA");
    indicator.parameters:addStringAlternative("MA"..id, "LWMA", "", "LWMA");
    indicator.parameters:addStringAlternative("MA"..id, "TMA", "", "TMA");
    indicator.parameters:addStringAlternative("MA"..id, "SMMA*", "", "SMMA");
    indicator.parameters:addStringAlternative("MA"..id, "Vidya (1995)*", "", "VIDYA");
    indicator.parameters:addStringAlternative("MA"..id, "Vidya (1992)*", "", "VIDYA92");
    indicator.parameters:addStringAlternative("MA"..id, "Wilders*", "", "WMA");
	indicator.parameters:addStringAlternative("MA"..id, "VAMA (VWAP)", "", "VAMA");
    indicator.parameters:addString("B"..id, "MA Time frame", "", FRAME);
    indicator.parameters:setFlag("B"..id, core.FLAG_PERIODS);
    indicator.parameters:addString("S"..id, "Price", "", "close");
    indicator.parameters:addStringAlternative("S"..id, "open", "", "open");
    indicator.parameters:addStringAlternative("S"..id, "high", "", "high");
    indicator.parameters:addStringAlternative("S"..id, "low", "", "low");
    indicator.parameters:addStringAlternative("S"..id, "close", "", "close");
    indicator.parameters:addStringAlternative("S"..id, "median", "", "median");
    indicator.parameters:addStringAlternative("S"..id, "typical", "", "typical");
    indicator.parameters:addStringAlternative("S"..id, "weighted", "", "weighted");
end

function Style(id,Color)
    indicator.parameters:addGroup(id..". MA Style");
    indicator.parameters:addInteger("width"..id,"Width", "", 1, 1, 5);
    indicator.parameters:addInteger("style"..id, "Style", "", core.LINE_SOLID);
    indicator.parameters:setFlag("style"..id, core.FLAG_LINE_STYLE);
    indicator.parameters:addColor("color"..id, "Color of the line ", "", Color);
end

 
local source;
local MA={};
local OUT={};
local day_offset, week_offset;
 
local stream={};
local loading={};
local host;
local first;
 
local Type;
local Number=4;


local UP, DN, NO;
local Label;
local Size;
local HSize;
local VShift;
	
	
function Prepare(nameOnly)   
 
    local name = profile:id() .. "(" ..  instance.source:name()  .. ")";
    instance:name(name); 


    if   (nameOnly) then
        return;
    end
    Type=instance.parameters.Type;
     
 
    source = instance.source;
	first= source:first();
    host = core.host;

    day_offset = host:execute("getTradingDayOffset");
    week_offset = host:execute("getTradingWeekOffset");

	 UP=instance.parameters.UP;
	 DN=instance.parameters.DN;
	 NO=instance.parameters.NO;
	 Label=instance.parameters.Label;
	 Size=instance.parameters.Size;
	 HSize=instance.parameters.HSize;
	 VShift=instance.parameters.VShift;
 
    
		for i = 1, 4 , 1 do	 
		
		    assert (core.indicators:findIndicator(instance.parameters:getString ("MA"..i) )~= nil , "Please download " .. instance.parameters:getString ("MA"..i).. " from the FxCodeBase.com");
					
			stream[i] =    core.host:execute("getSyncHistory",  source:instrument(),   instance.parameters:getString ("B"..i), source:isBid(), math.min(300,instance.parameters:getInteger ("N"..i)), 2000 + i , 1000 +i);	
            loading[i]=true;			
			 
			assert(core.indicators:findIndicator(instance.parameters:getString ("MA"..i)) ~= nil, instance.parameters:getString ("MA"..i) .. " indicator must be installed");
			if instance.parameters.MA ~= "VAMA" then
    		MA[i] = core.indicators:create(instance.parameters:getString ("MA"..i), stream[i][instance.parameters:getString ("S"..i)], instance.parameters:getInteger ("N"..i));
			else
			MA[i] = core.indicators:create(instance.parameters:getString ("MA"..i), stream[i], instance.parameters:getInteger ("N"..i));
			end
		end
 
	
    

	for i = 1, 4 , 1 do	
	assert (core.indicators:findIndicator(instance.parameters:getString ("MA"..i) )~= nil , "Please download " .. instance.parameters:getString ("MA"..i).. " from the FxCodeBase.com");
		if instance.parameters:getBoolean ("Show"..i) then
		OUT[i] = instance:addStream("MA"..i, core.Line, name .. ".MA"..i, "MA"..i, instance.parameters:getColor("color"..i), 0);
		OUT[i]:setWidth(instance.parameters:getInteger ("width"..i));
		OUT[i]:setStyle(instance.parameters:getInteger ("style"..i));
		else
		OUT[i]= instance:addInternalStream (first, 0);
		end
	end
		instance:ownerDrawn(true);
	      core.host:execute ("setTimer", 1, 1);
end





function ReleaseInstance()
core.host:execute ("killTimer", 1);
end 

function Update(period)



 
 local FLAG=false; 
 
 
    for j = 1, Number, 1 do 
		       
                 if loading[j] then
				 FLAG= true; 
				 end
	end    
	
	
		
   
   
   if   FLAG   then
   return;
   end
	
	
	


	for i = 1, 4, 1  do
	
           if MA[i]~= nil  then 
     
           p= Initialization(period,i);
   
			if p ~= -1 and p~=false then
				 
				  if MA[i].DATA:hasData(p) and p >=MA[i].DATA:first()  then
					OUT[i][period] = MA[i].DATA[p]; 
					end
				 
			end
		 end
	end

 

  
		    
 end

 
 
function Draw(stage, context)
    if stage ~= 2 then
	return;
	end
	
	local Flag = false;	

	
	
	
    for j = 1, Number, 1 do			
		if loading[j] then	
		Flag=true; 
		end	 
 
	end    
	
	
	
     	if Flag then
		return;
		end
		
		
		for i = 1, Number, 1 do 	
		Add(context, i );
		end
		       		 
 
		
end

function Add(context, i )

        if not  MA[i].DATA:hasData(MA[i].DATA:size()-1) then
		return;
		end
		
		
		local Symbol="\149";
      
	    local xCell =( (context:right () -context:left ())/100 )* (HSize/Number);		
        local yCell = (context:bottom () -context:top ())/15;	

		 context:createFont (2, "Arial", (xCell/10)*(Size/100), yCell*(Size/100), 0);	
        context:createFont (1, "Wingdings", (xCell/10)*(Size/100)*2, yCell*(Size/100), 0);	
	  
		

			local Color;
			
			
			if Type == "MA" then
					if MA[i].DATA[ MA[i].DATA:size()-1] >	 MA[i].DATA[ MA[i].DATA:size()-2] then
					Color=UP;
					Symbol="\217";
					elseif MA[i].DATA[ MA[i].DATA:size()-1]<	 MA[i].DATA[ MA[i].DATA:size()-2] then
					Color=DN;
					Symbol="\218";
					else
					Symbol="\160";
					Color=NO;
					end			
					 
		    elseif Type == "PRICE" then
			
			        if stream[i].close[ stream[i].close:size()-1] >	 stream[i].close[ stream[i].close:size()-2] then
					Color=UP;
					Symbol="\217";
					elseif stream[i].close[ stream[i].close:size()-1]<	stream[i].close[ stream[i].close:size()-2] then
					Color=DN;
					Symbol="\218";
					else
					Symbol="\160";
					Color=NO;
					end		 
			
			
			else
			       if  stream[i].close[ stream[i].close:size()-1] >	 MA[i].DATA[ MA[i].DATA:size()-1] then
					Color=UP;
					Symbol="\217";
					elseif  stream[i].close[ stream[i].close:size()-1] <	MA[i].DATA[ MA[i].DATA:size()-1] then
					Color=DN;
					Symbol="\218";
					else
					Symbol="\160";
					Color=NO;
					end		
			
			end
			
	 
           
			 width, height = context:measureText (1, tostring(Symbol), 0)			
			 context:drawText (1,  tostring(Symbol), Color, -1, context:right ()-(i)*xCell    , context:top ()+VShift+yCell*2, context:right ()-(i-1)*xCell + width, context:top ()+VShift+yCell*2 + height, 0);
			 
			 
		
			  width, height = context:measureText (2, tostring( instance.parameters:getString ("B"..i)), 0)				
		    context:drawText (2, tostring( instance.parameters:getString ("B"..i)), Label, -1, context:right ()-(i)*xCell    , context:top ()+VShift+yCell, context:right ()-(i-1)*xCell + width, context:top ()+VShift+yCell + height, 0);
	 
			
			
	 
			
			
end


	
function   Initialization(period,id)

    local Candle;
    Candle = core.getcandle(source:barSize(), source:date(period), day_offset, week_offset);
  
    if loading[id] or stream[id]:size() == 0  then
        return false;
    end

    
    if period < source:first() then
        return false;
    end

    local P = core.findDate(stream[id], Candle, false);
	 

    -- candle is not found
    if P < 0    then
        return false;
	else return P;	
    end
			
end	
	
	-- the function is called when the async operation is finished
function AsyncOperationFinished(cookie)

local j;
local FLAG=false; 
local Num=0;
 
    for j = 1, Number, 1 do
 
			  if cookie == (1000 + j) then
			  loading[j]  = true;
		      elseif  cookie == (2000 + j ) then
			  loading[j]  = false;         
			  end
		 
		       
                 if loading[j] then
				 FLAG= true;
				 Num=Num+1;
				 end
	end    
   
   
   if not FLAG and cookie== 1 then
		for i= 1, Number , 1 do
			  MA[i]:update(core.UpdateLast );
		end
		
    end
           
	
	if FLAG then
	 core.host:execute ("setStatus", "  Loading "..((Number) - Num) .. " / " .. (Number) );	 
	else
	core.host:execute ("setStatus", "Loaded");
	  instance:updateFrom(0);
	end
	
 
   
        
    return core.ASYNC_REDRAW ;
	
	
end