[html-formfu] custom ExtJS element

[Alexander Hartmaier]

Discussing this on irc would be great.
Are you on irc too, Mario?

Maybe we should define the possibility to overwrite the xtype per
Element and document the behaviour.

The purpose of the Generic element would be for the use of ExtJS user
extensions which don't have anything in common with any of the non-ExtJS
FormFu elements.

Also a guide how to write a custom ExtJS Element would be great so that
others don't fail like I did.

Am Donnerstag, den 25.06.2009, 16:40 +0200 schrieb Mario Minati:
> Just one generic element won't probably be enough, because there are also 
> select type elements in ExtJS. 
> 
> When I think of the ux.DD... fields, then we would need more than just these 
> two generic fields.
> 
> So overwriting the xype wouldn't be that bad and just let you decide which way 
> to go.
> 
> Greets,
> 
> Mario
> 
> Am Donnerstag 25 Juni 2009 12:17:11 schrieb Moritz Onken:
> > I prefer the Generic element as well.
> > A text field should stay a text field, no matter what you supply as
> > attributes.
> >
> > Patches welcome, or ask Carl to get a subversion commit bits (requires
> > a google account).
> >
> > moritz
> >
> > Am 25.06.2009 um 11:29 schrieb Alexander Hartmaier:
> > > Hi Mario!
> > >
> > > Do we want to allow to overwrite the xtype?
> > > I'm for a generic element that can be used for every Ext.ux.
> > >
> > > Am Donnerstag, den 25.06.2009, 01:02 +0200 schrieb Mario Minati:
> > >> Hello Alexander,
> > >>
> > >> you can write
> > >> return { xtype => "textfield", %{$super} };
> > >>
> > >> This way you can overwrite the xtype.
> > >>
> > >> If time permits I'll upload to svn.
> > >>
> > >> Greets,
> > >>
> > >> Mario
> > >>
> > >> Am Mittwoch 24 Juni 2009 14:09:38 schrieb Alexander Hartmaier:
> > >>> Am Montag, den 22.06.2009, 21:02 +0200 schrieb Moritz Onken:
> > >>>> Hi Alex,
> > >>>>
> > >>>>
> > >>>> did you try to just use a Text element?
> > >>>>
> > >>>>  - elements:
> > >>>>      - type: Text
> > >>>>        attrs:
> > >>>>          xtype: itemselector
> > >>>
> > >>> I've already tried this before making a custom element class. It
> > >>> doesn't
> > >>> work because the xtype is overwritten by the Text element in
> > >>> render by
> > >>> return { %{$super}, xtype => "textfield" };
> > >>>
> > >>> Should we add a Element::Generic class for such cases?
> > >>>
> > >>>> This should do it. If you want to create a custom ExtJS element you
> > >>>> have to create both a HTML::FormFu::Element::ExtJS::ItemSelector
> > >>>> and a
> > >>>> HTML::FormFu::ExtJS::Element::ItemSelector.
> > >>>>
> > >>>> The elements in the HTML::FormFu::ExtJS::Element namespace are not
> > >>>> objects in the OO sense. They just provide a "render" method
> > >>>> which is
> > >>>> used by ::ExtJS to render a HTML::FormFu::Element.
> > >>>
> > >>> Which part of HTML::FormFu::ExtJS holds that magic?
> > >>>
> > >>>> cheers,
> > >>>>
> > >>>> moritz
> > >>>>
> > >>>> Am 22.06.2009 um 18:15 schrieb Alexander Hartmaier:
> > >>>>> I'm trying to create an Element::ItemSelector
> > >>>>> (http://extjs.com/deploy/ext-3.0-rc2/examples/multiselect/multiselect
> > >>>>>-d emo.html ) in my Catalyst apps' namespace for many-to-many rels but
> > >>>>> keep
> > >>>>> getting the error:
> > >>>>>
> > >>>>> "Can't locate object method "new" via package
> > >>>>> "NAC::Web::NAC::HTML::FormFu::ExtJS::Element::ItemSelector"
> > >>>>> at /usr/local/share/perl/5.8.8/HTML/FormFu/ObjectUtil.pm line 167.
> > >>>>> at /usr/local/share/perl/5.8.8/HTML/FormFu.pm line 151"
> > >>>>>
> > >>>>> At the moment the class is just a copy of ExtJS::Element::Text:
> > >>>>>
> > >>>>> package NAC::Web::NAC::HTML::FormFu::ExtJS::Element::ItemSelector;
> > >>>>>
> > >>>>> use base "HTML::FormFu::ExtJS::Element::_Field";
> > >>>>>
> > >>>>> use strict;
> > >>>>> use warnings;
> > >>>>> use utf8;
> > >>>>>
> > >>>>> sub render {
> > >>>>>   my $class = shift;
> > >>>>>   my $self = shift;
> > >>>>>   my $super = $class->SUPER::render($self);
> > >>>>>   return { %{$super}, xtype => "itemselector" };
> > >>>>> }
> > >>>>>
> > >>>>> 1;
> > >>>>>
> > >>>>> HTML::FormFu::ExtJS::Element::_Field doesn't have a base class and
> > >>>>> also
> > >>>>> has no new contructor.
> > >>>>> The HTML::FormFu::Element classes all do have a new constructor,
> > >>>>> why
> > >>>>> the
> > >>>>> ExtJS not?
> > >>>>>
> > >>>>> What are I'm missing?
> > >>>>>
> > >>>>> --
> > >>>>> BR Alex
> > >>>>>
> > >>>>>
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> > >>>>>
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> > >>>>
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> > >>
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> > > --
> > > LG Alex
> > >
> > >
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-- 
LG Alex