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] <javascript:>>
> 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
>>>
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