[Gambas-user] How to search for an item in a treeview
Robert Rowe
robert.c.rowe at ...626...
Fri Mar 28 13:41:29 CET 2008
Why don't you add a second treeview that is initially hidden. As you
find your results add them to the hidden treeview. When the search
completes, show the hidden treeview and hide the original one.
Robert Rowe
M0E Lnx wrote:
> Sorry for not being too specifc.
>
> I'm trying to allow the user to search for specific items (initially
> listed in the treeview)
>
> so First, I want to populate the treeview with a massive collection
> (already done)
> Need to offer a search feature (this needs to find stuff in the
> treeview (you already did))
> Need to display ONLY the results of the search in the treeview.
>
> There will be a button that the user can hit to restore the treeview
> to the original content (full list)
>
>
>
> On 3/27/08, Stephen Bungay <sbungay at ...981...> wrote:
>
>> Yes, your original post did not ask for anything to be repopulated..
>> indeed, nothing has been removed from the treeview so you don;t have to
>> repopulate it using this method.
>> Could you be a little more clear on what it is you are trying to
>> accomplish? We have the find done.. whats with the repopulate?
>>
>>
>> M0E Lnx wrote:
>> > OK... I can see how that will find the hits... but I dont see how it
>> > will re-populate it using only the items that were found.
>> >
>> > I guess I must have misphrased that in the first place
>> >
>> >
>> > On 3/26/08, Stephen Bungay <sbungay at ...981...> wrote:
>> >> Ok try this. It is based on a save routine that I used in an
>> >> edutainment application I developed about a year ago... I pulled my hair
>> >> out trying to come up with a good recursive routine to do walk the tree,
>> >> and failed miserably at it. This treeview did not lend itself well to a
>> >> recursive walk through... but there is another SIMPLER way, Benoit
>> >> pointed me in the right direction (Thanks Benoit), and now lets pay it
>> >> forward.
>> >>
>> >> Create a test project with three controls on it. Don't rename the
>> >> controls, just use the default names. The controls to put on FMAIN are a
>> >> button, a treeview and a TextArea.
>> >> Now copy and paste this code into FMain
>> >>
>> >> PUBLIC Y AS String
>> >>
>> >> PUBLIC SUB Form_Open()
>> >>
>> >> WITH TreeView1
>> >> .Add("A", "Item A")
>> >> .Add("A1", "Item A1",, "A")
>> >> .Add("B", "Item B")
>> >> .Add("B1", "Item B1",, "B")
>> >> .Add("B1.1", "Item B1.1",, "B1")
>> >> .Add("C", "Item C")
>> >> .Add("D", "Item D")
>> >> .Add("D1", "Item D1",, "D")
>> >> .Add("E", "Item E")
>> >> END WITH
>> >>
>> >> END
>> >>
>> >> PUBLIC SUB Button1_Click()
>> >> WalkTree(TreeView1)
>> >> END
>> >>
>> >>
>> >> PRIVATE SUB WalkTree(pTreeView AS TreeView)
>> >> DIM sText AS String
>> >>
>> >> pTreeView.MoveFirst()
>> >>
>> >> REPEAT
>> >> sText = sText & pTreeView.Item.Key & ", " & "'" &
>> >> pTreeView.Item.Text & "'" & "\n"
>> >> pTreeView.Item.Expanded = TRUE
>> >> UNTIL pTreeView.MoveBelow()
>> >>
>> >> TextArea1.Text = sText
>> >>
>> >> END
>> >>
>> >>
>> >> When you push the button it will iterate down through the tree and
>> >> push the text of each node (and it's key) to a string, After the tree
>> >> has been 'walked' the string will be dumped to the Text area.
>> >> Use this to do a search on each ode as you come to it.
>> >> Job done.
>> >>
>> >> Steve.
>> >>
>> >>
>> >> M0E Lnx wrote:
>> >> > I have a treeview populated with lots of entries... I'm trying to
>> >> > provide a function that would search within the contents of that
>> >> > treeview for a specific string.
>> >> > Can anyone think of a way to do that?
>> >> >
>> >> > I've been trying the FIND method in the treeview, but it's quite
>> >> > different from other find methods...
>> >> >
>> >>
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