WoWInterface - How to create a copy of an object without reference?

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How to create a copy of an object without reference? [SOLVED]

I have a problem that I cannot solve.

For my UI panel I want a "reset" feature. Thus I have a reset button that can be called to load the database defaults.

The problem I'm having is that as soon as I do this the default data becomes a reference. Thus on a second click on reset it will not work anymore. Because of the reference issue.

Here is my code:

Lua Code:

--object container
  local db = CreateFrame("Frame")
  ns.db = db
  db.default = {}
 
  ---------------------------------------------
  --DEFAULTS
  ---------------------------------------------
 
  --default orb setup
  db.default.orb = {
    --health
    ["HEALTH"] = {
      --filling
      filling = {
        texture     = "Interface\\AddOns\\oUF_Diablo\\media\\orb_filling15",
        color       = { r = 1, g = 0, b = 0, },
        colorAuto   = false, --automatic coloring based on class/powertype
      },
    },--health end
    --power
    ["POWER"] = {
      --filling
      filling = {
        texture     = "Interface\\AddOns\\oUF_Diablo\\media\\orb_filling15",
        color       = { r = 0, g = 0, b = 1, },
        colorAuto   = false, --automatic coloring based on class/powertype
      },
    },--power end
  } --default end
 
  db.getDefaultOrbHealth = function() return db.default.orb["HEALTH"] end
  db.getDefaultOrbPower = function() return db.default.orb["POWER"] end
  db.getDefaultOrb = function() return db.default.orb end
 
  ---------------------------------------------
  --CHARACTER DATA
  ---------------------------------------------
 
  --load character data defaults
  db.loadCharacterDataDefaults = function(type)
    if type then
      if type == "HEALTH" then
        OUF_DIABLO_DB_CHAR[type] = db.getDefaultOrbHealth()
        print(addon..": health orb reseted to default")
      elseif type == "POWER" then
        OUF_DIABLO_DB_CHAR[type] = db.getDefaultOrbPower()
        print(addon..": power orb reseted to default")
      end
    else
      OUF_DIABLO_DB_CHAR = db.getDefaultOrb()
      print(addon..": character data defaults loaded")
    end
    db.char = OUF_DIABLO_DB_CHAR
    --update the orb view
    ns.panel.updateOrbView()
  end

OUF_DIABLO_DB_CHAR is my saved variable per character.

Basically when I click the reset button I call

Code:

db.loadCharacterDataDefaults("HEALTH")

I cannot copy the table data via ipairs. Assoc tables cannot be looped. The following will return 0:

Code:

print(# db.default.orb["HEALTH"])

Any idea?

Tuller uses sth like

Lua Code:

local function copyDefaults(tbl, defaults)
    for k, v in pairs(defaults) do
        if type(v) == 'table' then
            tbl[k] = copyDefaults(tbl[k] or {}, v)
        elseif tbl[k] == nil then
            tbl[k] = v
        end
    end
    return tbl
end

Maybe I'm missing sth...

Oh...his GetDefault funnction is looking like:

Lua Code:

function tullaRange:GetDefaults()
    return {
        normal = {1, 1, 1},
        oor = {1, 0.3, 0.1},
        oom = {0.1, 0.3, 1}
    }
end

Hmmm...so this could be an idea. I do not create a default table variable in first place that could get referenced later on.

I will try that.

Perfect that did it! :)

What I'm now doing is:

Lua Code:

--default orb setup
  function db:GetOrbDefaults()
    return {
      --health
      ["HEALTH"] = {
        --filling
        filling = {
          texture     = "Interface\\AddOns\\oUF_Diablo\\media\\orb_filling15",
          color       = { r = 1, g = 0, b = 0, },
          colorAuto   = false, --automatic coloring based on class/powertype
        },
      },--health end
      --power
      ["POWER"] = {
        --filling
        filling = {
          texture     = "Interface\\AddOns\\oUF_Diablo\\media\\orb_filling15",
          color       = { r = 0, g = 0, b = 1, },
          colorAuto   = false, --automatic coloring based on class/powertype
        },
      },--power end
    } --default end
  end

I feel like I remember seeing "default settings" tables in code, before. I assume they're usually used to initialize, but they could just as easily be used to reset. Nice.

One thing you could also do if your options are not very complicated is make use of metatables:

http://www.lua.org/pil/13.4.3.html

Then when resetting, just loop over the options database table and set all keys to nil.

I use the following function to copy a table by value:

Code:

local function copyTable(source, target)

        for key, value in pairs(source) do

                if type(value) == "table" then

                        target[key] = {}

                        copyTable(value, target[key])

                else

                        target[key] = value

                end

        end

end

If that works, then what is this talking about?

Quote:

I cannot copy the table data via ipairs. Assoc tables cannot be looped.

I don't see the problem there. Why not use:

Code:

 for key, value in pairs(db.default.orb["HEALTH"]) do

        ...

 end

Any table with only keys in it rather than indexes will have #table return zero. That doesn't mean you can't iterate it.

Ah damn. I think I tried to iterate over the table length. I think I mixed sth up when using # table.

The loop Haleth posted actually does work.

Thanks.

*edit*

Thanks a bunch it is working now! :)

You can use either pairs or next to loop over a dictionary table.

Lua only returns a length for numerically indexed tables (or at least the highest consecutive index).

I love it when I go down another path almost to completion to avoid a problem I didn't have when I'm coding. Always fun :).

Just incase you missed it ... CopyTable is a global function since quite some time now

Lua Code:

function CopyTable(settings)
    local copy = {};
    for k, v in pairs(settings) do
        if ( type(v) == "table" ) then
            copy[k] = CopyTable(v);
        else
            copy[k] = v;
        end
    end
    return copy;
end

http://wowprogramming.com/utils/xmlb...L/UIParent.lua

Oh, interesting. There's quite a few useful function in UIParent.lua. However I noticed this...

Code:

    if ( tempName == "LeftButton" ) then

        tempName = "BUTTON1";

    elseif ( tempName == "RightButton" ) then

        tempName = "BUTTON2";

    elseif ( tempName == "MiddleButton" ) then

        tempName = "BUTTON3";

    elseif ( tempName == "Button4" ) then

        tempName = "BUTTON4";

    elseif ( tempName == "Button5" ) then

        tempName = "BUTTON5";

    elseif ( tempName == "Button6" ) then

        tempName = "BUTTON6";

    elseif ( tempName == "Button7" ) then

        tempName = "BUTTON7";

    elseif ( tempName == "Button8" ) then

        tempName = "BUTTON8";

    elseif ( tempName == "Button9" ) then

        tempName = "BUTTON9";

    elseif ( tempName == "Button10" ) then

        tempName = "BUTTON10";

    elseif ( tempName == "Button11" ) then

        tempName = "BUTTON11";

    elseif ( tempName == "Button12" ) then

        tempName = "BUTTON12";

    elseif ( tempName == "Button13" ) then

        tempName = "BUTTON13";

    elseif ( tempName == "Button14" ) then

        tempName = "BUTTON14";

    elseif ( tempName == "Button15" ) then

        tempName = "BUTTON15";

    elseif ( tempName == "Button16" ) then

        tempName = "BUTTON16";

    elseif ( tempName == "Button17" ) then

        tempName = "BUTTON17";

    elseif ( tempName == "Button18" ) then

        tempName = "BUTTON18";

    elseif ( tempName == "Button19" ) then

        tempName = "BUTTON19";

    elseif ( tempName == "Button20" ) then

        tempName = "BUTTON20";

    elseif ( tempName == "Button21" ) then

        tempName = "BUTTON21";

    elseif ( tempName == "Button22" ) then

        tempName = "BUTTON22";

    elseif ( tempName == "Button23" ) then

        tempName = "BUTTON23";

    elseif ( tempName == "Button24" ) then

        tempName = "BUTTON24";

    elseif ( tempName == "Button25" ) then

        tempName = "BUTTON25";

    elseif ( tempName == "Button26" ) then

        tempName = "BUTTON26";

    elseif ( tempName == "Button27" ) then

        tempName = "BUTTON27";

    elseif ( tempName == "Button28" ) then

        tempName = "BUTTON28";

    elseif ( tempName == "Button29" ) then

        tempName = "BUTTON29";

    elseif ( tempName == "Button30" ) then

        tempName = "BUTTON30";

    elseif ( tempName == "Button31" ) then

        tempName = "BUTTON31";

    end

:rolleyes:

Well, if Button4 ever changes to RightRightButton, we'll be ready.