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From Harbs <harbs.li...@gmail.com>
Subject Re: [FlexJS]HierarchicalData
Date Tue, 31 May 2016 21:18:54 GMT
So basically, there’s a wrapper controller which brings in the sub-controllers?

Is there any examples which does this already?

On Jun 1, 2016, at 12:16 AM, Peter Ent <pent@adobe.com> wrote:

> My official reply is "Hmm, I don't think you can". I think you'd want to
> use something like IMouseController and IKeyboardController for the items
> in the style. IBeadController, if present, is automatically detected and
> loaded as the controller for the strand (same for the IBeadView and
> IBeadModel). But you can write your view to load your own classes.
> 
> —peter
> 
> On 5/31/16, 5:09 PM, "Harbs" <harbs.lists@gmail.com> wrote:
> 
>> So, is it possible to have two IBeadControllers?
>> 
>> On Jun 1, 2016, at 12:04 AM, Peter Ent <pent@adobe.com> wrote:
>> 
>>> The key to the CSS and the beads is the ValuesManager
>>> (org.apache.flex.core.ValuesManager) the implementation used
>>> (org.apache.flex.core.SimpleCSSValuesImpl). This searches through the
>>> CSS
>>> for the class and matches the name (eg, IBeadController) and
>>> instantiates
>>> and instance of the class referenced. This is done in the
>>> MXMLDataInterpreter.
>>> 
>>> —peter
>>> 
>>> On 5/31/16, 4:24 PM, "Harbs" <harbs.lists@gmail.com> wrote:
>>> 
>>>> Yeah. If I’m going to jump in, it might as well be with both feet into
>>>> the deep water… ;-)
>>>> 
>>>> How does the css setting of beads work under the hood? I’d like to
>>>> understand the mechanics.
>>>> 
>>>> I’ll figure out the HierarchicalData as soon as I fix the XML issue
>>>> with
>>>> the compiler.
>>>> 
>>>> I’ll look at EditableTextKeyboardController. Thanks. Is there any trick
>>>> necessary for specifying multiple controller beads?
>>>> 
>>>> I’d also like to figure out how to specify different icons for open and
>>>> closed nodes. Ideally there should be a way to specify look using CSS
>>>> class names in HTML. Is there an easy way to do that?
>>>> 
>>>> On May 31, 2016, at 5:24 PM, Peter Ent <pent@adobe.com> wrote:
>>>> 
>>>>> Hi,
>>>>> 
>>>>> Picked Tree as the first component, huh? The basic idea behind Tree in
>>>>> FlexJS is that it is a List with itemRenderers that indent.
>>>>> 
>>>>> The reason CSS is used to set beads, such as model, view, controller,
>>>>> and
>>>>> others, is to make it very easy to swap them out just by giving your
>>>>> app a
>>>>> different CSS file and they don't have to be hard-coded.
>>>>> 
>>>>> Since it has been a little while since I looked at Tree, my guess is
>>>>> that
>>>>> I just forgot to change it once I took HierarchicalData as far as was
>>>>> needed at the time. I probably worked with HierarchicalData until the
>>>>> end
>>>>> when I created IHierarchicalData and just forgot to go back to Tree
>>>>> and
>>>>> change it.
>>>>> 
>>>>> If you want to add keyboard behavior, you'd create another controller
>>>>> type
>>>>> bead. If you look in the HTML project in the
>>>>> org.apache.flex.html.beads.controllers package you'll find
>>>>> EditableTextKeyboardController. There's not much to it, but its a
>>>>> start.
>>>>> Some of the mouse controllers have more insight into separating the
>>>>> SWF
>>>>> and JS event handling if you need to look at specific keyboard keys.
>>>>> 
>>>>> On 5/30/16, 3:36 PM, "Harbs" <harbs.lists@gmail.com> wrote:
>>>>> 
>>>>>> On second thoughtŠ
>>>>>> 
>>>>>> This is the first time I¹m diving into a FlexJS component. I
>>>>>> understand
>>>>>> strands and beads conceptually, but I have not really looked into
the
>>>>>> practice until now.
>>>>>> 
>>>>>> It looks like the behavior of the Tree is handled by the
>>>>>> TreeSingleSelectionMouseController which extends
>>>>>> ListSingleSelectionMouseController. The controller seems to be set
in
>>>>>> the
>>>>>> css file? That strikes me as a bit odd considering that css usually
>>>>>> means
>>>>>> visual to me, but I think I get it.
>>>>>> 
>>>>>> Either way, Tree is expecting HierarchicalData rather than
>>>>>> IHierarchicalData. Is there a reason for that?
>>>>>> 
>>>>>> If I want to add keyboard behavior (i.e. using the arrow keys to
>>>>>> navigate
>>>>>> and open/close nodes, what would be the best way to do that?
>>>>>> 
>>>>>> (BTW, I¹m using Tree for a pet project as a way of learning the
>>>>>> structure
>>>>>> of FlexJS components before I deep dive into using them.)
>>>>>> 
>>>>>> On May 30, 2016, at 10:20 PM, Harbs <harbs.lists@gmail.com>
wrote:
>>>>>> 
>>>>>>> I¹d like to add XML support for Trees. Any preference on whether
I
>>>>>>> should create a new IHierarchicalData class for XML (i.e.
>>>>>>> XMLHierarchicalData) or put conditional logic in the existing
>>>>>>> HierarchicalData class?
>>>>>>> 
>>>>>>> I¹m leaning towards the former.
>>>>>>> 
>>>>>>> Harbs
>>>>>> 
>>>>> 
>>>> 
>>> 
>> 
> 


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