Crafting Research Completed
 

Is there an easy way to check if all traits have been researched for a crafting skill? If not, is there a hard way? =P Thanks!

I use AI Research Grid, with a hot key to display it. There are several similar.

No, I meant in an addon, in the code.

GetSmithingResearchLineTraitInfo()
 

Call GetSmithingResearchLineTraitInfo(craftingType, researchLine, traitIndex) is probably the API you seek.

Iterate traitIndex 1..9 for each trait, and count the "knowns". That's how many traits the current char has completed research for that specific item.

researchLine is an index into the gear items you can craft at a station, 1..14 for blacksmithing (7 weapons, 7 heavy armor). 1..15 for clothing (8 light including jerkin, 7 medium), 6 for wood, 2 for jewelry.

craftingType is CRAFTING_TYPE_whatever.

I count trait knowledge in WritWorthy_Smithing.lua Parser:ToKnowList(), if you care to wade through pages and pages of not-really-relevant code to get to an example of GetSmithingResearchLineTraitInfo()

--Z

Trait knowledge
 

You can download AI Research Grid and see how the code in there works. There is no single function that can tell you if all the traits are known for a given item (sword, shield, legs, etc.).

Look for PopulateTraitDataForCraft in AIResearchGrid.lua. It has all the function calls necessary to determine if a trait is know for an item, as well as how much time might be left on research for a trait.