No this will not have the values retained as they are reusable..So make a
dictionary object which will be static and that will have seriesId as a key
and Old objects as values...
public static var oldObjectDictionary:Dictionary = new Dictionary();
public function set data(value : Object){
super.data =value;
var oldObject :Object;
if(oldObjectDictionary[value.seriesId]){
oldObject =oldObjectDictionary[value.seriesId];
if(oldObject.highPrice > value.highPrice){
someComponent.setStyle("
backgroundColor","#FF00000")
}else{
someComponent.setStyle("backgroundColor","#00FF00")
}
oldObjectDictionary[value.seriesId] =value;
On Wed, Mar 23, 2011 at 11:43 AM, Shalu <[email protected]> wrote:
> Hey Jitendra,
>
> When item-renderers are rendered again, does this old object
> retained ?
>
> On Mar 23, 10:02 am, Jitendra Jain <[email protected]>
> wrote:
> > Well Naveen, you have to override the set data method like. This
> oldObject
> > will hold the last set data Object..
> >
> > private var oldObject : Object;
> > public function set data(value : Object){
> > super.data =value;
> > if(oldObject){
> > if(oldObject.highPrice > value.highPrice){
> > someComponent.setStyle("backgroundColor","#FF00000")}else{
> >
> > someComponent.setStyle("backgroundColor","#00FF00")
> >
> > }
> >
> > oldObject =data;
> >
> >
> >
> >
> >
> > }
> > On Wed, Mar 23, 2011 at 9:47 AM, Shalu <[email protected]> wrote:
> > > Hi Naveen,
> >
> > > As per my understanding, you should maintain two arrayCollections, one
> > > dataGridDataProvider and the sceond one say originalData, whenever u
> > > get new data, you should get in original data, and then you can
> > > comapre it with datagridDataProvider's values and you can maintain one
> > > more field for coloring purupose e.g. "valueChange" in
> > > datagridDataProvider's objects, if you want the item to be colored
> > > then set the value of valueChange to true else false.
> >
> > > and as your dataGridDataProvider is binded with datagrid, the item-
> > > renderer will check the value of valueChange property and set the
> > > color accordingly.
> >
> > > hope this suggestion will help you to resolve your query.
> >
> > > Thanks & Regards,
> > > Shalu
> >
> > > On Mar 22, 7:57 pm, nav <[email protected]> wrote:
> > > > Hi Friends,
> >
> > > > I have a question on the implementation of a specific use case which
> > > > is as follows:
> >
> > > > 1) I have a data provider of ArrayCollection of some custom class
> > > > called StockVO which is bound to a datagrid. Say the values initially
> > > > received from the server are 1,2,3,4,5 on a column StockValue from
> the
> > > > respective classes.
> >
> > > > 2) At regular interval by polling I have an updated ArrayCollection
> > > > coming in from the server. With the new set of dataprovider, I
> require
> > > > to compare with the old values against the same specific beans and
> > > > change the color of the cell in the datagrid,
> >
> > > > ie Say the 0th element of StockVO class in the array collection had
> > > > value 5 the first time.
> >
> > > > The new Array Collection has the same Object updated to say 6, I need
> > > > to change the cell color to green.
> >
> > > > Questions I have for the implementation of such a use case of Stock
> > > > Application is:
> >
> > > > 1) How do I compare the previous values to new values? Do I use UUID
> > > > in each of the bean?
> >
> > > > 2) How do I retain the old Arraycollection and compare this with the
> > > > new value?
> >
> > > > 3) If I had to use Item Renderer for this operation to selectively
> > > > change color how do I pass the data knowledge on the previous and
> > > > current value at the same time?
> >
> > > > Thanks in advance for the help folks.
> >
> > > > Cheers,
> > > > Naveen
> >
> > > --
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> > > "Flex India Community" group.
> > > To post to this group, send email to [email protected].
> > > To unsubscribe from this group, send email to
> > > [email protected].
> > > For more options, visit this group at
> > >http://groups.google.com/group/flex_india?hl=en.
> >
> > --
> > Thanks and Regards,
> > JJain,
> >
> > If you have knowledge, let others light their candles in it --Margaret
> > Fuller:- Hide quoted text -
> >
> > - Show quoted text -
>
> --
> You received this message because you are subscribed to the Google Groups
> "Flex India Community" group.
> To post to this group, send email to [email protected].
> To unsubscribe from this group, send email to
> [email protected].
> For more options, visit this group at
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>
>
--
Thanks and Regards,
JJain,
If you have knowledge, let others light their candles in it --Margaret
Fuller:
--
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