Ahhhh! I see!
Thanks for the pointer Greg!
Gerrick
On Wed, Oct 20, 2010 at 12:41 PM, Greg Brown <[email protected]> wrote:
> Yes, you can do this in several ways. You can define the list in BXML
> directly, either in a define block or in script:
>
> <bxml:define xmlns:collections="org.apache.pivot.collections">
> <collections:ArrayList bxml:id="tableDataInList"/>
> </bxml:define>
>
> <bxml:script>
> importPackage(org.apache.pivot.collections);
> var tableDataInList = ArrayList();
> </bxml:script>
>
> or you can do it in Java:
>
> ArrayList tableDataInList = new ArrayList();
> bxmlSerializer.getNamespace().put("tableDataInList", tableDataInList);
> bxmlSerializer.readObject(...)
>
> Greg
>
> On Oct 20, 2010, at 9:31 AM, Gerrick Bivins wrote:
>
> Hi Greg,
> Where my confusion comes in is in the syntax, I think,
> What I was expecting to be able to specify the dataprovider something like
> this:
> in BXML:
> <Border>
> <content>
> <ScrollPane horizontalScrollBarPolicy="fill_to_capacity">
> <view>
> <TableView bxml:id="tableView" tableData="*$**
> tableDataInList*">
> <bxml:define>
>
> </bxml:define>
> <columns>
> <TableView.Column name="label" width="3*"
> headerData="Name"/>
> <TableView.Column name="value" width="1*"
> headerData="Value"/>
> <TableView.Column name="units" width="1*"
> headerData="Units"/>
> </columns>
> </TableView>
> </view>
> <columnHeader>
> <TableViewHeader tableView="$tableView"/>
> </columnHeader>
> </ScrollPane>
> </content>
> </Border>
>
> And with a definition of *tableDatainList *defined and populated
> somewhere, bxml,java,javascript etc, as a bindable variable.
>
> Is it possible to define a List somewhere and then bind it as a variable
> that is accessible in bxml?
> Again thanks for the patience here.
> Gerrick
>
>
> On Tue, Oct 19, 2010 at 12:16 PM, Greg Brown <[email protected]> wrote:
>
>> Unfortunately, the term "binding" is very heavily overloaded. :-) What
>> you are describing sounds like "data-bound" or "data-driven" controls. Pivot
>> does support this - in fact, the design of this feature was somewhat
>> inspired by Flex. The ListView, TableView, and TreeView components (among
>> others) are all backed by instances of org.apache.pivot.collections.List.
>> Implementations of this interface (such as ArrayList) fire events, which
>> allow them to be used as a data model. You can see some examples in the
>> tutorial:
>>
>> http://pivot.apache.org/tutorials/
>>
>> It currently only covers Pivot 1.5 but most of the concepts are the same
>> in 2.0.
>>
>> Pivot also supports several other forms of binding:
>>
>> - BXML binding, which maps objects declared in markup to Java member
>> variables
>> - Data binding, which uses a load()/store() mechanism to populate user
>> interface elements
>> - Namespace binding, which allows you to declaratively create a
>> relationship between a source property and a target property (also inspired
>> to some extent by Flex)
>>
>> Hope this helps.
>>
>> Greg
>>
>>
>> On Oct 19, 2010, at 10:17 AM, Gerrick Bivins wrote:
>>
>> Hello all,
>> I'm coming from a dev background of swing then a flex project and now we
>> are back on a java project.
>> After my experiences with flex/actionscript I've been looking for a more
>> modern alternative to swing so
>> that lead me to pivot.
>> Right now I'm struggling with understanding data binding in pivot (I'm
>> using trunk of 2.0).
>> In flex/actionscript, just about any thing (components, data) were
>> "bindable". What that allowed was the ability to
>> populate a bindable structure (arraylist for instance) and then refer to
>> that arraylist as the "dataprovider" for any of
>> the components. Changes to the arraylist are automatically reflected in
>> any components that were bound to it.
>> That's the general idea but it's a pretty vague description/example. Here
>> is an example from the docs that shows an arraylist as a dataprovider to a
>> table (datagrid):
>> Data binding in a flex
>> datagrid<http://help.adobe.com/en_US/flex/using/WS2db454920e96a9e51e63e3d11c0bf66ce9-7ff2.html#WS2db454920e96a9e51e63e3d11c0bf66ce9-7fee>
>>
>> This paradigm was one of the great things about flex/actionscript and I
>> was hoping pivot had some similar mechanisms in place but
>> I can't find a concrete example of it. Is there an analogous "databinding"
>> concept in pivot?
>>
>> Thanks for any guidance here.
>> Gerrick
>>
>>
>>
>
>
