Re: Nested Java directives - best practice on how to make values available to inner directive?

Saturday, February 2, 2008, 6:03:44 PM, Attila Szegedi wrote:

> On 2008.02.02., at 17:24, Daniel Dekany wrote:
>
>> Saturday, February 2, 2008, 3:55:15 PM, Attila Szegedi wrote:
>>
>>> On 2008.01.31., at 11:16, Daniel Dekany wrote:
>>>
>>>> To fellow FM developers:
>>>>
>>>> - Given that 2.4 will not be released in the foreseeable future, and
>>>> even then it will not be 100% BC, parent-children communication
>>>> definitely should be backported to 2.3.x. This is again a very basic
>>>> feature for a template language, shame that it isn't there for
>>>> years. (Reminds me to the history of #nested...) Would backporting
>>>> be difficult?
>>>>
>>>> - Can TemplateDirectiveModel and TempateTransformModel calls
>>>> participate as parents in the current trunk? (And as children for
>>>> that mater?) I don't think so... of course, they should be able to.
>>>> Java and FTL are just to languages to implement custom directives.
>>>
>>> We should ideally make it so that the engine code doesn't deal with
>>> the Macro class at all. Engine would only rely on
>>> TemplateDirectiveModel, and we'd make Macro a TemplateDirectiveModel.
>>> Then we'd achieve actual equality between a [#macro] and a Java-
>>> defined TemplateDirectiveModel.
>>
>> That's highly desirable indeed, and also #function-s should be
>> TemplateMethodModelEx-s (as it was noted for several times BTW).
>> However, as far as I understand, it still wouldn't solve the issue
>> with the parent-children communication (i.e., ?scope in FM 2.4), as
>> for that the parent must have *FTL* local variables. So, we need to
>> add something to the API by which a TemplateDirectiveModel, which was
>> written entirely in Java Language, can create a local variable map, so
>> it can be accessed by the children like
>> theParentDirective?scope.theLocalVariable.
>
> Yep, we would add whatever needs to be added to the public API.

Something like adding a method to f.c.Environment:
Environment.Namespace createLocalScopeFor(TemplateDirectiveModel|TemplateTransformModel)

-- 
Best regards,
 Daniel Dekany


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