Hi
First create six array collections for six comboboxes which will be
data providers for them. I am assuming that there can be change in the
collection (sourceCollection) e.g. add/remove etc in mean time and you
would like to reflect that too. So first add an event listener on that
collecion like:
sourceCollection.addEventListener(CollectionEvent.COLLECTION_CHANGE,
collectionDataChanged);
Then in that case a fucntion collectionDataChanged will be called
upon.In that function if change is collection.refresh dont do
anything, else update individual combobox data providers:
updateOrganizationDataProvider(organizationCollection,
newOrganization)
updateModelDataProvider()
so on.....
updateOrganizationDataProvider(ac:ArrayColleciton, obj:object)
{
if (ac.contains(obj)
return
esle
ac.add(obj)
}
for other comboboxes addition/deletion will be done same way but that
will depend upon selection in previous comboboxes. Also FIlter
function can be written keeping in mind the selections in all
comboboxes.
I hope it helps.
companyAC, ModelAC,
<mx:Object Company="GM" count="85" Model ='Saab" ModelCount=20
Year="2009" YearCount="10" />
<mx:Object Company="GM" count="85" Model ='Saab"
ModelCount=20
Year="2008" YearCount="5" />
<mx:Object Company="GM" count="85" Model ='Saab"
ModelCount=20
Year="2007" YearCount="5" />
<mx:Object Company="GM" count="85" Model ='Chevi"
ModelCount=20
Year="2009" YearCount="20" />
<mx:Object Company="FORD" count="43" Model ='Focus"
ModelCount=10
Year="2009" YearCount="5" />
<mx:Object Company="FORD" count="43" Model ='Focus"
ModelCount=10
Year="2008" YearCount="3" />
<mx:Object Company="FORD" count="43" Model ='Focs"
ModelCount=10
Year="2007" YearCount="2" />
On Jan 22, 5:02 pm, Varun Bajaj <[email protected]> wrote:
> I think if you use xmllist for dataprovider for your comboboxes then you can
> easily have chain effect as you said.
>
> Hope this code snippet may help you.
> (replace the values according your requirements)
>
> var dp1:xmllist = new xmllist(dp0.data.(@field == val));
> dp1.refresh();
>
> Varun Bajaj
>
> On Fri, Jan 22, 2010 at 3:08 PM, Jitendra Jain <
>
>
>
> [email protected]> wrote:
> > Read about filter function it will be quite helpful.
>
> > On Fri, Jan 22, 2010 at 4:39 AM, Aviral Sharma
> > <[email protected]>wrote:
>
> >> Now, you can provide a dataprovider for combobox (using an
> >> arraycollection is better than hardcoding the data).
> >> Use filter function to remove duplicates as described in the link:
>
> >>http://blog.flexexamples.com/2007/08/05/removing-duplicate-items-from...
>
> >> Here is the code (visit the website link above to see a working
> >> example)
>
> >> <!-- Start Code -->
>
> >> <?xml version="1.0" encoding="utf-8"?>
> >> <!--
> >>http://blog.flexexamples.com/2007/08/05/removing-duplicate-items-from...
> >> -->
> >> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
> >> layout="vertical"
> >> verticalAlign="middle"
> >> backgroundColor="white"
> >> creationComplete="init()">
>
> >> <mx:Script>
> >> <![CDATA[
> >> private var keys:Object = {};
>
> >> /**
> >> * Called by the Application container's creationComplete
> >> * event handler. This method creates a new Array object
> >> * which will be used as a data provider as well as a
> >> * filtered view of that array which does not contain
> >> * duplicated items.
> >> */
> >> private function init():void {
> >> /* Create a dummy data source with some semi-random
> >> data. */
> >> var arr:Array = [];
> >> arr.push({data:1, label:"one"});
> >> arr.push({data:1, label:"one"});
> >> arr.push({data:1, label:"one"});
> >> arr.push({data:1, label:"one"});
> >> arr.push({data:2, label:"two"});
> >> arr.push({data:2, label:"two"});
> >> arr.push({data:2, label:"two"});
> >> arr.push({data:1, label:"one"});
> >> arr.push({data:3, label:"three"});
> >> arr.push({data:3, label:"three"});
>
> >> /* Filter the original array and call the
> >> removeDuplicates() function on each item
> >> in the array. */
> >> var filteredArr:Array = arr.filter(removedDuplicates);
>
> >> arrColl.source = arr;
> >> dedupedArrColl.source = filteredArr;
> >> }
>
> >> /**
> >> * This method is used to filter an array so that no
> >> * duplicate items are created. It works by first
> >> * checking to see if a keys object already contains
> >> * a key equal to the current value of the item.data
> >> * value. If the key already exists, the current item
> >> * will not be readded to the data provider. If the key
> >> * does not already exist, add the key to the keys
> >> * object and add this item to the data provider.
> >> */
> >> private function removedDuplicates(item:Object, idx:uint,
> >> arr:Array):Boolean {
> >> if (keys.hasOwnProperty(item.data)) {
> >> /* If the keys Object already has this property,
> >> return false and discard this item. */
> >> return false;
> >> } else {
> >> /* Else the keys Object does *NOT* already have
> >> this key, so add this item to the new data
> >> provider. */
> >> keys[item.data] = item;
> >> return true;
> >> }
> >> }
> >> ]]>
> >> </mx:Script>
>
> >> <mx:ArrayCollection id="arrColl" />
> >> <mx:ArrayCollection id="dedupedArrColl" />
>
> >> <mx:HBox>
> >> <mx:VBox>
> >> <mx:Label text="Original ({arrColl.length} items):" />
> >> <mx:List dataProvider="{arrColl}" />
> >> </mx:VBox>
> >> <mx:VBox>
> >> <mx:Label text="Filtered ({dedupedArrColl.length}
> >> items):" />
> >> <mx:List dataProvider="{dedupedArrColl}" />
> >> </mx:VBox>
> >> </mx:HBox>
>
> >> </mx:Application>
>
> >> <!-- End Code -->
>
> >> On Dec 30 2009, 10:46 am, Kiran Kumar Vasireddy <[email protected]>
> >> wrote:
> >> > Thanks Safi for your response . If I do this I get duplicate elements in
> >> > Mycombox , I want to avoid them.
>
> >> > Regards
> >> > Kiran
>
> >> > On Sun, Dec 27, 2009 at 10:50 PM, saanaa safi <[email protected]>
> >> wrote:
> >> > > hi kiran,
> >> > > i hope below example will help u. try this,i think this is what u r
> >> > > expecting.
>
> >> > > <?xml version="1.0" encoding="utf-8"?>
> >> > > <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml";
> >> > > layout="absolute">
> >> > > <mx:ArrayCollection id="myColl">
>
> >> > > <mx:Object Company="GM" count="85" Model ="Saab"
> >> ModelCount="20"
> >> > > Year="2009" YearCount="10" />
> >> > > <mx:Object Company="GM" count="85" Model ="Saab"
> >> ModelCount="20"
> >> > > Year="2008" YearCount="5" />
> >> > > <mx:Object Company="GM" count="85" Model ="Saab"
> >> ModelCount="20"
> >> > > Year="2007" YearCount="5" />
> >> > > <mx:Object Company="GM" count="85" Model ="Chevi"
> >> > > ModelCount="20" Year="2009" YearCount="20" />
>
> >> > > <mx:Object Company="FORD" count="43" Model ="Focus"
> >> > > ModelCount="20" Year="2009" YearCount="5" />
> >> > > <mx:Object Company="FORD" count="43" Model ="Focus"
> >> > > ModelCount="20" Year="2008" YearCount="3" />
> >> > > <mx:Object Company="FORD" count="43" Model ="Focs"
> >> > > ModelCount="20" Year="2007" YearCount="2" />
>
> >> > > </mx:ArrayCollection>
> >> > > <mx:ComboBox prompt="Company" dataProvider="{myColl}"
> >> > > labelField="Company" x="44" y="21" width="100"/>
> >> > > <mx:ComboBox prompt="Model" dataProvider="{myColl}"
> >> labelField="Model"
> >> > > x="153" y="21" width="100"/>
> >> > > <mx:ComboBox prompt="Year" dataProvider="{myColl}"
> >> labelField="Year"
> >> > > x="275" y="21" width="100"/>
>
> >> > > </mx:Application>
>
> >> > > On Sat, Dec 26, 2009 at 4:00 PM, Kiran Kumar Vasireddy <
> >> > > [email protected]> wrote:
>
> >> > >> Dear All,
>
> >> > >> I am getting the data in following format . Is there any way to load
> >> it
> >> > >> into comboxbox avoiding duplicates? First combobox I want to just
> >> load
> >> > >> Company Name removing duplicates.Second combox box based on the
> >> section I
> >> > >> have to load Models and In the Thrid combox box based on company and
> >> Model
> >> > >> I have to load Years.Or if not Arraycollection , I can also get the
> >> data in
> >> > >> XMLCollection . Could some body please give me best solution?
>
> >> > >> <ArrayCollection>
>
> >> > >> <mx:Object Company="GM" count="85" Model ='Saab"
> >> ModelCount=20
> >> > >> Year="2009" YearCount="10" />
> >> > >> <mx:Object Company="GM" count="85" Model ='Saab"
> >> ModelCount=20
> >> > >> Year="2008" YearCount="5" />
> >> > >> <mx:Object Company="GM" count="85" Model ='Saab"
> >> ModelCount=20
> >> > >> Year="2007" YearCount="5" />
> >> > >> <mx:Object Company="GM" count="85" Model ='Chevi"
> >> > >> ModelCount=20 Year="2009" YearCount="20" />
>
> >> > >> <mx:Object Company="FORD" count="43" Model ='Focus"
> >> > >> ModelCount=10 Year="2009" YearCount="5" />
> >> > >> <mx:Object Company="FORD" count="43" Model ='Focus"
> >> > >> ModelCount=10 Year="2008" YearCount="3" />
> >> > >> <mx:Object Company="FORD" count="43" Model ='Focs"
> >> > >> ModelCount=10 Year="2007" YearCount="2" />
>
> >> > >> </ArrayCollection>
>
> >> > >> --
> >> > >> 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].
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> >> <flex_india%2bunsubscr...@googlegrou ps.com>
> >> > >> .
> >> > >> For more options, visit this group at
> >> > >>http://groups.google.com/group/flex_india?hl=en.
>
> >> > > --
> >> > > Warm Regards
> >> > > Saanaa....
>
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