home *** CD-ROM | disk | FTP | other *** search
-
- >I like the idea, and am glad to see people are now taking an interest in html
- >and forms.
-
- Does this mean my wag at an example does jive with your ideas? I'm
- still not clear... especially on the protocol.
-
- >Summarising what you suggest above:
- >
- > <input name=FIELDNAME type=FIELDTYPE [width=FIELDWIDTH] [help=HELPUDI]>
- >
- > FIELDNAME is a unique identifier for this form
- > FIELDTYPE ::= "boolean" | "text" | "integer" | "float"
- >
- > The [ ] brackets denote optional attributes.
-
- Why not let's talk SGML, while we're at it? It's not so tough:
-
- <!ENTITY % url "CDATA" -- this is kind of a DTD macro >
- <!ELEMENT input - O EMPTY>
- <!ATTLIST input
- name ID #REQUIRED
- type (boolean|text|integer|float) #REQUIRED
- help %url; #implied
- >
-
- >Multiple choice items need a richer structure, e.g.
- >
- > <select name=FIELDNAME type=CHOICETYPE [value=VALUE] [help=HELPUDI]>
- > <choice>item 1
- > <choice>item 2
- > <choice>item 3
- > </select>
- >
- > CHOICETYPE ::= "radio" | "single" | "multiple"
-
- <!ELEMENT select - - (choice+)>
- <!ATTLIST select
- name ID #REQUIRED
- type (radio|single|multiple) #REQUIRED
- value IDREF #IMPLIED -- defaults to first choice --
- help %url; #IMPLIED
- >
- <!ELEMENT choice - - (%hypertext)+ -- see HTML DTD: text with A tags -->
- <!ATTLIST choice
- id ID #IMPLIED -- select's value attribute points here --
- value CDATA #IMPLIED -- defaults to element content --
- >
-
- >It is also useful to distinguish form decorations from output fields. I think
- >this can be adequately handled using the existing emphasis tags though.
-
- I don't get it; what's an output field?
-
- >How will the <queryform> tag take over from the <ISINDEX> mechanism? Right
- >now, the browser provides an input field and search button, but I assume that
- >in future, searchable documents will use the queryform approach instead.
- >
- >Forms generally involve additional ideas:
- >
- > a) expressions and queries for output fields
- >
- > b) edits (constraints) on input field values
- >
- > c) dependencies between fields
- >
- >These can all be handled by the server, albeit with a performance penalty as
- >perceived by the user.
-
- Whoa! You mean there's a round trip every time the user enters a field?
- This implies a stateful connection between the client and server.
-
- This isn't the model I had in mind at all! I thought it went:
- * server sends whole form
- * user interacts with client only to fill out form
- * user instructs client to send completed form to server
- * client translates user inputs using <QUERYFORM> element
- and sends results to server in HTRQ data
- * server processes query.
-
- Dan
-
-
-