2009/1/23, Igor Stasenko <siguctua(a)gmail.com&gt;: > Hello list, > > I'm trying to describe a model, which values could have complex or > multiple types at once. > > In general , a question is how to provide a description of following > fields: > > suppose you have a field, which in own turn having own fields, and you > want to display them in-line i.e. > > position :: point(x,y) > > point::x = integer > point::y = integer > > so i'd like to describe a position, as a compound data type, lets say, > instances of class Point which having own fields (x,y). > So, then in form i could have this field displayed like following: > > position x: [ ... ] y: [ ...] > > Another case, is when value can use multiple types. > Following previous example, for position, now i reconsidered and want > a position accept not only instances of Point, but instances of > Point3D as well. > So, then Magritte should be able to display my 'position' field editor > like following: > > position > * x: [ ... ] y: [ ...] > * x: [ ... ] y: [ ...] z: [...] > > where * is radio button. > Or there can be different view where user can select a type first, and > then edit value: > > position [<type selection combobox>] [ value editor for selected type ] > > I don't want to get into detail how to render/build such editors, my > main question, is how to describe such things in less > painfull/controversial way using Magritte. MARelationDescription new selectorAccessor: #position; classes: (Array with: Point with: Point3D); yourself of course Point and Point3D need to be described with Magritte.

2009/1/24 Philippe Marschall <philippe.marschall(a)gmail.com&gt;: > 2009/1/24, Philippe Marschall <philippe.marschall(a)gmail.com&gt;: >> 2009/1/23, Igor Stasenko <siguctua(a)gmail.com&gt;: >>> Hello list, >>> >>> I'm trying to describe a model, which values could have complex or >>> multiple types at once. >>> >>> In general , a question is how to provide a description of following >>> fields: >>> >>> suppose you have a field, which in own turn having own fields, and you >>> want to display them in-line i.e. >>> >>> position :: point(x,y) >>> >>> point::x = integer >>> point::y = integer >>> >>> so i'd like to describe a position, as a compound data type, lets say, >>> instances of class Point which having own fields (x,y). >>> So, then in form i could have this field displayed like following: >>> >>> position x: [ ... ] y: [ ...] >>> >>> Another case, is when value can use multiple types. >>> Following previous example, for position, now i reconsidered and want >>> a position accept not only instances of Point, but instances of >>> Point3D as well. >>> So, then Magritte should be able to display my 'position' field editor >>> like following: >>> >>> position >>> * x: [ ... ] y: [ ...] >>> * x: [ ... ] y: [ ...] z: [...] >>> >>> where * is radio button. >>> Or there can be different view where user can select a type first, and >>> then edit value: >>> >>> position [<type selection combobox>] [ value editor for selected type ] >>> >>> I don't want to get into detail how to render/build such editors, my >>> main question, is how to describe such things in less >>> painfull/controversial way using Magritte. >> >> MARelationDescription new >> selectorAccessor: #position; >> classes: (Array with: Point with: Point3D); >> yourself >> >> of course Point and Point3D need to be described with Magritte. > > That should be MAToOneRelationDescription not MARelationDescription. > Thanks, Philippe > Cheers > Philippe > > _______________________________________________ > SmallWiki, Magritte, Pier and Related Tools ... > https://www.iam.unibe.ch/mailman/listinfo/smallwiki > -- Best regards, Igor Stasenko AKA sig.

Igor Stasenko wrote: > Another question, > what if i want from user to be able to choose one of possible values: > > * string 'foo' > * string 'bar' > * instance of Point (and if choosen, ask to enter x,y values) > Your point class needs to have a description of its own, i.e. descriptionX descriptionY. Then when an edit form is presented it will be built from the descriptions

Keith _______________________________________________ SmallWiki, Magritte, Pier and Related Tools ... https://www.iam.unibe.ch/mailman/listinfo/smallwiki