Is your feature request related to a problem? Please describe.
When the IDE gets a tooltip via FSharpCheckFileResults.GetToolTip, it will eventually print a layout from NicePrint.
Describe the solution you'd like
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let rec FormatItemDescriptionToToolTipElement displayFullName (infoReader: InfoReader) ad m denv (item: ItemWithInst) = |
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let g = infoReader.g |
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let amap = infoReader.amap |
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let denv = SimplerDisplayEnv denv |
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let xml = GetXmlCommentForItem infoReader m item.Item |
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match item.Item with |
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| Item.ImplicitOp(_, { contents = Some(TraitConstraintSln.FSMethSln(vref=vref)) }) -> |
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// operator with solution |
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FormatItemDescriptionToToolTipElement displayFullName infoReader ad m denv { item with Item = Item.Value vref } |
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| Item.Value vref | Item.CustomBuilder (_, vref) -> |
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let prettyTyparInst, resL = NicePrint.layoutQualifiedValOrMember denv infoReader item.TyparInstantiation vref |
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let remarks = OutputFullName displayFullName pubpathOfValRef fullDisplayTextOfValRefAsLayout vref |
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let tpsL = FormatTyparMapping denv prettyTyparInst |
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let tpsL = List.map toArray tpsL |
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let resL = toArray resL |
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let remarks = toArray remarks |
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ToolTipElement.Single(resL, xml, tpsL, remarks=remarks) |
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// Union tags (constructors) |
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| Item.UnionCase(ucinfo, _) -> |
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let uc = ucinfo.UnionCase |
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let unionTy = generalizedTyconRef g ucinfo.TyconRef |
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let recd = uc.RecdFields |
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let layout = |
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wordL (tagText (FSComp.SR.typeInfoUnionCase())) ^^ |
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NicePrint.layoutTyconRef denv ucinfo.TyconRef ^^ |
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sepL (tagPunctuation ".") ^^ |
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wordL (tagUnionCase (ConvertValLogicalNameToDisplayNameCore uc.Id.idText) |> mkNav uc.DefinitionRange) ^^ |
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RightL.colon ^^ |
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(if List.isEmpty recd then emptyL else NicePrint.layoutUnionCases denv infoReader ucinfo.TyconRef recd ^^ WordL.arrow) ^^ |
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NicePrint.layoutType denv unionTy |
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let layout = toArray layout |
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ToolTipElement.Single (layout, xml) |
To a certain degree, it is possible to control the width of a layout before it gets transformed into a tooltip.
Using Display.squashTo 80 after NicePrint.layoutType denv unionTy for example.
I'd like to be able to pass in an option width that when present squashes the layout to get a better tooltip view.
Describe alternatives you've considered
I'm not really sure what the alternatives could be here.
