Hi Senechaux
Good stuff. The task you’ve set yourself is quite a tricky one, with some
subtleties that have put me off addressing it myself, I’ll be interested to see
how you get on, and happy to help.
> It's been some time but I've finally found time to continue this effort with
> TW5.1.11. (Love the tiddler folding) I've removed the previous "default"
> idea from the checkbox (and an equivalent radio) rule and moving forward.
> I'm assuming one can "initialize" the tiddler defaults by setting tiddler
> field values "manually" when creating the tiddlers containing multiple
> checkboxes only or radios only.
I’m not quite sure what you’re asking here. What do you mean by “creating the
tiddlers containing multiple checkboxes only or radios only”
> The checkbox rule needs to wikifyPlain() (TWC term) and remove/change invalid
> chars for the corresponding tiddler field -- value set to true/false. In
> addition, I would like the radio rule to wikifyPlain() the radio label to
> provide the value of a static field name.
Parsers have no access to the results of wikification; parsers are in fact the
first stage of the processing pipeline that implements the tw5 equivalent of
wikifyPlain.
The usual way to approach things like this is to have both a parser and widget:
the parser would emit the widget, and the widget would handle the runtime
logic. Look at how the transclusion rules relate to the transclude widget.
The tricky part, though, is making sure that you’ve got the right reference to
change the [X] to a [ ]. Widgets don’t have access to the wikitext that
generated them. Roughly, it's because that wikitext might have been dynamically
generated, eg by a macro. So your parser will have to pass along enough
information to the widget to allow it to locate the right part of the right
tiddler.
Best wishes
Jeremy.
>
> Is there a TW5 method I can use to provide the equivalent of wikifyPlain() in
> a TW5 rule?
>
> The overall implementation effort is attempting to allow an end-user (new TW5
> user) to create the "questions" (using checkbox/radio rules rather than the
> more cryptic widget syntax). User will then process the wiki's
> "wikifyPlain()" fields/values as needed.
>
> Hope this makes sense. Thanks for yours or anyone's thoughts.
> PS. Is there an easy way to enable folding on a tiddler being edited?
>
> On Thursday, April 23, 2015 at 6:54:51 PM UTC-5, senechaux wrote:
> Hi Guys,
>
> Not sure if this is possible but found it creating the checkbox with some
> gotchas.
> /*\
> title: $:/core/modules/parsers/wikiparser/rules/checkboxrule.js
> type: application/javascript
> module-type: wikirule
> \*/
> (function(){
>
> /*jslint node: true, browser: true */
> /*global $tw: false */
> "use strict";
>
> exports.name = "checkboxrule";
> exports.types = {inline: true};
>
> exports.init = function(parser) {
> this.parser = parser;
> // Regexp to match
> this.matchRegExp = /\[([xX_ ])\] ?(.*)/mg;
> };
>
> exports.parse = function() {
> this.parser.pos = this.matchRegExp.lastIndex;
> var checked = ($tw.utils.trim(this.match[1]).toUpperCase()=="X");
> var lbl = $tw.utils.trim(this.match[2]);
> return [{type: "checkbox",
> tag: "$checkbox",
> attributes: {
> id : {type: "string", value: "AM_"+lbl},
> field : {type: "string", value: lbl},
> checked : {type: "string", value: true},
> unchecked : {type: "string", value: false},
> default : {type: "string", value: checked}
> },
> children: [{
> type: "text",
> text: " "+lbl
> }]
> },
> {type: "element", tag: "br"}
> ];
> };
> })();
> The use of a default appears to cause problems (a 3rd state appears where
> 'checked' but field shows false) and the label doesn't get wikified. Am I
> going about this the wrong way or is this a valid rule?
>
> Thanks for your thoughts.
>
>
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