Am I reaching for straws?

[Thuggernaught]

Me being so 'new' to this programming in LUA thing... I'm looking for simplifying a wide spread function.

for oyslop = 2, 8 do
	oys[oyslop] = UI.CreateFrame("Text","oysFrame"..tostring(oyslop),oys)
	oys[oyslop]:SetPoint("TOPCENTER",oys[oyslop-1],"BOTTOMCENTER")
	oys[oyslop]:SetWidth(150)
	oys[oyslop]:SetHeight(16)
	oys[oyslop]:SetBackgroundColor(.20,.20,.20,.50)
	oys[oyslop]:SetFontSize(12)
	oys[oyslop]:SetText("Frame Number: " ..tostring(oyslop))

	function oys[oyslop].Event:MouseIn()
		oys[oyslop]:SetFontSize(22)
		oys[oyslop]:SetHeight(26)
	end
	function oys[oyslop].Event:MouseOut() 
		oys[oyslop]:SetFontSize(12)
		oys[oyslop]:SetHeight(16)
	end
	
end

for example.. trying to give 7 frames the same function code. Am I going about this the wrong way or is it simply something I need to repeat the code manually for each frame. I know I could repeat the same code over and over again, but I don't want my addon to take up a lot of code space if I can help it.

[the_real_seebs]

A few things you can do. One... Functions are just things in Lua.

function myMouseOut() 
	oys[oyslop]:SetFontSize(12)
	oys[oyslop]:SetHeight(16)
end

...

	oys[oyslop].Event:MouseOut = myMouseOut

Secondly, you could do something like:

function MakeMyFrame(val)
	x = UI.CreateFrame("Text","oysFrame"..tostring(val),oys)
	x:SetPoint("TOPCENTER",oys[val-1],"BOTTOMCENTER")
	x:SetWidth(150)
	...
end

for oyslop = 2, 8 do
	oys[oyslop] = MakeMyFrame(val)
end

This help any?

[Thuggernaught]

Getting 'function arguments expected near '=' '

:/ ah well.. I'll just hit it old school till I learn better lol

[the_real_seebs]

This is why you should never trust the details of anything I say about programming languages, I have an astounding ability to misremember syntax.

[Thuggernaught]

It's ok. a pebble in the pond causes ripples that will eventually contact their target, even if you don't hit your target directly.

[Thuggernaught]

Hm..

oys[oyslop].Event = function(MouseIn ) oys[oyslop]:SetFontSize(22); oys[oyslop]:SetHeight(26); end

Doesn't throw an error... but also doesn't function lol.

Adding :MouseIn causes an error... either a missing argument without () or unexpected symbol near = with....

-.- So many symbols to keep track of.

[Thuggernaught]

Egads I got it! I knew it was SO simple too.

oys[oyslop].Event:MouseIn = function( ) oys[oyslop]:SetFontSize(22); oys[oyslop]:SetHeight(26); end

was wrong, by ONE character!

oys[oyslop].Event.MouseIn = function( ) oys[oyslop]:SetFontSize(22); oys[oyslop]:SetHeight(26); end

Was correct.. using them in that way makes the : become replaced with a . =3


Thanks the_real_seebs for the pebble.

[the_real_seebs]

I don't actually understand the intended structure.

... wait. I just realized a thing, which is that I wasn't looking closely. The functions are being defined in terms of oys[oyslop]. But. That's not actually a thing they know about or have access to in my version -- in yours, I think they're what computer science geeks call "closures" where they are able to access the values that were in the surrounding code when they were defined.

As I recall, Lua has two ways of doing function definitions.

A named function looks like:

function function_name_here(args)
...
end

and an anonymous function looks like

function (args) .. end

and has no name. But the entire "function ... end" thing is an expression that yields a "value" which is the function argument, which can be called.

So if foo.bar is supposed to be a function, you can do:

foo.bar = function(args) ... end

or you can do

function named_function(args)
...
end

foo.bar = named_function

and both should work.

Note that the (args) matter, and the exact value that goes there depends on what the function is supposed to be getting called with.

[Jorast]

Conceptually this code should work, but I think there's one small change that will make it actually work. ;)

for oyslop = 2, 8 do
	oys[oyslop] = UI.CreateFrame("Text","oysFrame"..tostring(oyslop),oys)
	oys[oyslop]:SetPoint("TOPCENTER",oys[oyslop-1],"BOTTOMCENTER")
	oys[oyslop]:SetWidth(150)
	oys[oyslop]:SetHeight(16)
	oys[oyslop]:SetBackgroundColor(.20,.20,.20,.50)
	oys[oyslop]:SetFontSize(12)
	oys[oyslop]:SetText("Frame Number: " ..tostring(oyslop))

	function oys[oyslop].Event:MouseIn()
		self:SetFontSize(22)
		self:SetHeight(26)
	end
	function oys[oyslop].Event:MouseOut() 
		self:SetFontSize(12)
		self:SetHeight(16)
	end
	
end

Alternatively, as seebs suggested, you can do something like:

function oysMouseIn()
	self:SetFontSize(22)
	self:SetHeight(26)
end

function oysMouseOut() 
	self:SetFontSize(12)
	self:SetHeight(16)
end

for oyslop = 2, 8 do
	oys[oyslop] = UI.CreateFrame("Text","oysFrame"..tostring(oyslop),oys)
	oys[oyslop]:SetPoint("TOPCENTER",oys[oyslop-1],"BOTTOMCENTER")
	oys[oyslop]:SetWidth(150)
	oys[oyslop]:SetHeight(16)
	oys[oyslop]:SetBackgroundColor(.20,.20,.20,.50)
	oys[oyslop]:SetFontSize(12)
	oys[oyslop]:SetText("Frame Number: " ..tostring(oyslop))

	oys[oyslop].Event.MouseIn = oysMouseIn
	oys[oyslop].Event.MouseOut = oysMouseOut

end

One thing to keep in mind is that the ":" is just syntactic sugar in LUA. There's no difference between

function frame.Event:MouseIn()
...
end

and

frame.Event.MouseIn = function()
...
end

[Pushad]

One thing to keep in mind is that the ":" is just syntactic sugar in LUA. There's no difference between

function frame.Event:MouseIn()
...
end

and

frame.Event.MouseIn = function()
...
end

There is difference actually. "self" doesn't just magically appear, it's a parameter. so

function frame.Event:MouseIn()
    ...
end

is the same as

frame.Event.MouseIn = function(self)
    ...
end

This is important to know when function is supposed to have parameters.



One more thing: I can be wrong, but I believe lua won't accept this syntatic sugar when used on tables indexed with braces. Example:

local test = { };
test.inner = { };

function test.inner:works() end
function test["inner"]:doesntwork() end