Using CellTree you have to provide a TreeViewModel. For each node in the
tree you will create a ListDataProvider that contains the child elements of
a given node. If you want to filter your tree you have to filter all these
ListDataProviders. To do so you should create a sub class of
ListDataProvider and add filter capabilities to it. Maybe something like:
FilterListDataProvider<T> extends ListDataProvider<T> {
void setFilter(Filter<T> filter) {
//store it
}
public List<T> getOriginalList() {
return super.getList();
}
@Override
public List<T> getList() {
List<T> originalData = super.getList();
if(filter == null) {
return originalData;
}
//filter.apply() should return a new list. Do not modify originalData.
return filter.apply(originalData);
}
}
After you have setup the filter you have to call ListDataProvider.refresh()
to update the CellTree (which hopefully causes getList() to be called).
Maybe you also have to overwrite other methods of ListDataProvider to make
the filtered behavior correct.
Also I think CellTree won't open up itself upon refreshing
ListDataProviders. So you have to do it yourself using
CellTree.getRootTreeNode().setChildOpen(). Note that setChildOpen() returns
the child node if its successfully opened so you can walk through the tree
nodes.
I haven't implemented all of this myself, but I think thats the way I would
try it.
-- J.
Am Montag, 9. April 2012 08:32:10 UTC+2 schrieb Qrunk:
>
>
> Hi Patrick,
>
> Sorry for late reply, I didnt understood what you meant by filtering of
> list, as in a tree I might be having so many lists, even nested lists.
>
> Can you please let me know how would I do filtering , as in any sample
> code snippet would do the perfect job, can you provide that please.
>
> Thanks
>
>
> On Thursday, 5 April 2012 18:59:01 UTC+5:30, Patrick Tucker wrote:
>>
>> CellTree uses a list...
>>
>> After your GUI component works, custom header with textbox, you just need
>> to filter the list??
>>
>> On Wednesday, April 4, 2012 11:44:17 AM UTC-4, Qrunk wrote:
>>
>>> Can some one please put some light on this issue ?? if GXT has already
>>> done it cant it be done now in GWT ??
>>>
>>> On Tuesday, 3 April 2012 15:39:20 UTC+5:30, Qrunk wrote:
>>>>
>>>> Hi
>>>> How to create a filter tree in *GWT* using *CellTre*e, a filter tree
>>>> is some Tree which has an filter(TextBox) where we can enter values for
>>>> the
>>>> leaf node. Once we start entering values we get the tree branches along
>>>> with leaf nodes reflected on the Tree panel(we have our tree inside a
>>>> panel). For reference :
>>>> http://www.sencha.com/examples/explorer.html#filtertree
>>>>
>>>> We can develop such FilterTree easily in GXT, but we have an
>>>> requirement to develop it in GWT, not in GXT. Can I have some replies with
>>>> a short and simple sample code on FilterTree in GWT, or at least any links
>>>> to refer to.
>>>
>>>
> On Thursday, 5 April 2012 18:59:01 UTC+5:30, Patrick Tucker wrote:
>>
>> CellTree uses a list...
>>
>> After your GUI component works, custom header with textbox, you just need
>> to filter the list??
>>
>> On Wednesday, April 4, 2012 11:44:17 AM UTC-4, Qrunk wrote:
>>
>>> Can some one please put some light on this issue ?? if GXT has already
>>> done it cant it be done now in GWT ??
>>>
>>> On Tuesday, 3 April 2012 15:39:20 UTC+5:30, Qrunk wrote:
>>>>
>>>> Hi
>>>> How to create a filter tree in *GWT* using *CellTre*e, a filter tree
>>>> is some Tree which has an filter(TextBox) where we can enter values for
>>>> the
>>>> leaf node. Once we start entering values we get the tree branches along
>>>> with leaf nodes reflected on the Tree panel(we have our tree inside a
>>>> panel). For reference :
>>>> http://www.sencha.com/examples/explorer.html#filtertree
>>>>
>>>> We can develop such FilterTree easily in GXT, but we have an
>>>> requirement to develop it in GWT, not in GXT. Can I have some replies with
>>>> a short and simple sample code on FilterTree in GWT, or at least any links
>>>> to refer to.
>>>
>>>
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