HI Alain TiddlyWiki uses it’s own CommonJS compatible module loader. The $tw global is explicitly exposed to loaded modules:
https://github.com/Jermolene/TiddlyWiki5/blob/master/boot/boot.js#L652 <https://github.com/Jermolene/TiddlyWiki5/blob/master/boot/boot.js#L652> $tw is also exposed to the JavaScript global namespace, but that is not directly visible to TW modules. Best wishes Jeremy. > On 22 Mar 2016, at 23:38, Alain Dutech <[email protected]> wrote: > > Thanks, it's clearer now. > In fact, it's a stupid error that led me to wonder about $tw. > While testing about it in my module, I tried > console.log("__INIT: $tw="+$tw ); > and I had an error, and assumed wrongly I could not "see" $tw. But the error > was simply that $tw could not be cast into a string (as asked by the '+'). If > I write > console.log("__INIT: $tw=",$tw ); > it works.... > > So I got confused, for no real reason. All my fault !!! > > Alain > > On Tue, Mar 22, 2016 at 9:32 PM, BJ <[email protected] > <mailto:[email protected]>> wrote: > It depends on what you plugin does. In each tiddler you need to put what > type of module the javascript is so that tiddlywiki can load it at the > correct time - generally try and copy what others have done. > > $tw is alway visible - it is a global variable. > > If you have a particular functionality then I may be able to be more > specific, you can experiment and see what works. > > > > On Tuesday, March 22, 2016 at 6:22:32 PM UTC, Alain Dutech wrote: > Thanks BJ. > > I have looked a bit at boot.js and various startup modules. It is a bit more > clear (especially how $tw is created and populated, but not perfrect. Still, > I cannot say when the $tw can be used. > > Specifically, if a create a new module with the classical > `(function(){ ... ` > > I will not be able to use `$tw.utils`. What should I do to "see" $tw ? > If I call my module from a Widget, I could pass my module the $tw variable ? > Other ways ? > > And, to go back to filter.js > For example, $tw is used inside the fonction > exports.compileFilter = function(filterString) { > > Is it because filters.js is loaded through $tw.modules.applyMethods() that > $tw is in its scope ? > > Alain > > > > On Sun, Mar 20, 2016 at 8:22 PM, BJ <[email protected] <>> wrote: > HI Alain, > the modular structure of tiddlywiki is more extensive that 'require'. > > There is some documentation here > > tiddlywiki.com/dev. <http://tiddlywiki.com/dev> > > but mostly you can read the code! but ask questions when you get stuck. > > The $tw structure is populated in a number of step during the start up. It is > defined at the begin of the boot and some basic functionality is added to it > in boot.js. Alot of extra stuff in added to it in > > $:/core/modules/startup/load-modules.js > > javascipt modules in tiddlywiki can have a module-type that allow them to be > add to $tw thru $tw.modules.applyMethods(). (including the filter functions) > > Some places use 'this' instead of $tw, may be for some future expansion of tw? > > all the best > > BJ > > > On Sunday, March 20, 2016 at 5:16:22 PM UTC, Alain Dutech wrote: > > Hi, > this must be a bunch of stupid questions but I'm still learning the logic of > javascript. > > 1) when is the global $tw variable available? > - what "module" are required for it to be available ? > - does it become available after > `require("$:/core/modules/widgets/widget.js");` ? Why ? > - how come $tw can be used in the filter.js module ? as show below > > exports.getFilterOperators = function() { > if(!this.filterOperators) { > $tw.Wiki.prototype.filterOperators = {}; > $tw.modules.applyMethods("filteroperator",this.filterOperators); > } > return this.filterOperators; > }; > > Is it because getFilterOperators is defined inside "exports" ?? > > 2) To use the filter API, and in particular the filterTiddler function > defined in filters.js (see below), must I "require" filter.js, or widget.js, > or wiki.js or ??? > > exports.filterTiddlers = function(filterString,widget,source) { > var fn = this.compileFilter(filterString); > return fn.call(this,source,widget); > }; > > 3) the `this.wiki` of Widgets is initialized through the option parameters in > the Widget constructor. > so all the function exported by wiki.js are available through this.wiki ? > > 4) Is there like a list of "public" function available through $tw, $tw.utils > and this.wiki ? I am trying to guess by reading through the various *.js > modules, but I'm my knowledge of JS make this task a bit tedious... > > Thanks for any hint or explanations or info. > Alain > > -- > You received this message because you are subscribed to a topic in the Google > Groups "TiddlyWikiDev" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/tiddlywikidev/Ul3ezJU98QA/unsubscribe > <https://groups.google.com/d/topic/tiddlywikidev/Ul3ezJU98QA/unsubscribe>. > To unsubscribe from this group and all its topics, send an email to > [email protected] <>. > To post to this group, send email to [email protected] <>. > Visit this group at https://groups.google.com/group/tiddlywikidev > <https://groups.google.com/group/tiddlywikidev>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tiddlywikidev/5fcc3488-48af-4159-b267-f3a62fcf8a69%40googlegroups.com > > <https://groups.google.com/d/msgid/tiddlywikidev/5fcc3488-48af-4159-b267-f3a62fcf8a69%40googlegroups.com?utm_medium=email&utm_source=footer>. > > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to a topic in the Google > Groups "TiddlyWikiDev" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/tiddlywikidev/Ul3ezJU98QA/unsubscribe > <https://groups.google.com/d/topic/tiddlywikidev/Ul3ezJU98QA/unsubscribe>. > To unsubscribe from this group and all its topics, send an email to > [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/tiddlywikidev > <https://groups.google.com/group/tiddlywikidev>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tiddlywikidev/215cb573-7850-41ca-8cc5-99c49095c17e%40googlegroups.com > > <https://groups.google.com/d/msgid/tiddlywikidev/215cb573-7850-41ca-8cc5-99c49095c17e%40googlegroups.com?utm_medium=email&utm_source=footer>. > > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. > > > -- > You received this message because you are subscribed to the Google Groups > "TiddlyWikiDev" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > To post to this group, send email to [email protected] > <mailto:[email protected]>. > Visit this group at https://groups.google.com/group/tiddlywikidev > <https://groups.google.com/group/tiddlywikidev>. > To view this discussion on the web visit > https://groups.google.com/d/msgid/tiddlywikidev/CAFF9YEEOc00SLW4GU38rgR3X0wmnWFSvOsC8RPrm7L6%3DC9HkiA%40mail.gmail.com > > <https://groups.google.com/d/msgid/tiddlywikidev/CAFF9YEEOc00SLW4GU38rgR3X0wmnWFSvOsC8RPrm7L6%3DC9HkiA%40mail.gmail.com?utm_medium=email&utm_source=footer>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "TiddlyWikiDev" group. 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