Tree Control - Performace - ITS 620

Hi,
Am using a tree control in our web application created using
class - CL_GUI_LIST_TREE with checkbox items.
When a user checks the item , it went to hourglass for 2 to 3 mins.
Can you please let me know, is there any fine tuning is required
at code level or is there any parameter setting at ITS Level.
We are in ITS 620 and R3 4.7.
Thanks in advance,
Srini S

Hi Srini,
I saw that you have asked this question in the ABAP forum too and got an answer there. Is your problem already solved?
Regards,
Henning

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Tree Control - Performance

Hi,
Am using a tree control in our web application created using
class - CL_GUI_LIST_TREE with checkbox items.
When a user 'checks' the item , it went to hourglass for 2 to 3 mins.
Can you please let me know, is there any fine tuning is required
at code level or is there any parameter setting at ITS Level.
We are in ITS 620 and R3 4.7.
Thanks in advance,
Srini S

Hi,
At coding level, a solution could be to subgroup the main nodes in your tree control and send the 'children' of a node only when it is clicked.
Kind Regards,
Sükrü

How to get all items under a parent item in a tree control

Hello,
I have 2 questions regarding a tree control:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
Any ideas?
Attachments:
Tree example.vi ‏6 KB

Mentos wrote:
1) Is there any way to specify a parent item tag and get an array of ALL its sub item tags? For example, in the attached vi, specify the Parent#2 parent tag and get an array containing Item#P21 and Item#P22
Did you try a search? There's no direct way of doing this. You have to navigate the tree and build up an array. You can find an example here: http://forums.ni.com/t5/LabVIEW/get-all-children-of-a-parent-in-tree/td-p/729548
2) Is there a way to specify a range to the ActiveCell property. For example, all items from line#1 to line number#3
No. (It's called ActiveCell, not ActiveCells) Presumably you are trying to perform an operation on multiple items. Unfortunately, you need to use a loop. You should defer panel updates if you're doing this a lot.

How to render image in tree control without embed it

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Items in Tree control move around when data is submitted using custom ItemRenderer

I'm working on a Tree control with an XMLListCollection as
its dataProvider.
The dataProvider has information looking like this :
quote:
<?xml version='1.0' encoding='utf-8'?>
<INFO>
<FIELD label="STR_USER_NAME"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_USER_EMAIL"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_OPTIONAL"
type="branch"
value="0"
>
<FIELD label="STR_USER_ADDRESS"
type="text"
value=""
>
</FIELD>
<FIELD label="STR_USER_POSTAL_CODE"
type="text"
value=""
>
</FIELD>
</FIELD>
</INFO>
So in the Tree control I'd like the information to show up
with a label and
an
editable textbox for each item :
[Label] [textbox]
To do this I made a tree like this :
quote:
<mx:Tree id="userTree"
editable="true"
rendererIsEditor="true"
editorDataField="curVal"
itemRenderer="{new ClassFactory(ItemRendererUser)}"
itemEditEnd="e_ProcessData(event);"
dataDescriptor="{new DataDescriptorUsers()}"
showRoot="false"
verticalScrollPolicy="{ScrollPolicy.AUTO}"
/>
where the e_ProcessData() function looks like this (I used
http://livedocs.adobe.com/flex/201/html/wwhelp/wwhimpl/js/html/wwhelp.htm?href=c
elleditor_073_16.html#202105 as a guide) :
quote:
public function e_ProcessData(event:ListEvent):void
event.preventDefault();
userTree.editedItemRenderer.data.@value =
ItemRendererUsers(event.currentTarget.itemEditorInstance).curVal;
userTree.destroyItemEditor();
userTree.dataProvider.notifyItemUpdate(userTree.editedItemRenderer);
} // END OF e_ProcessData()
I attached the rest of the files because they're a little
bit longer.
When I run the program, the data shows up fine when it is
initialized the
very
first time, and I made a test button that just dumps the
contents of the
dataProvider in a trace statement to verify that the data has
been set
properly.
The problem I've run into is whenever the textfield is
edited, the item
that
I've selected jumps around the list.
For example, if I edit the item "STR_USER_NAME" after I
finish the edit, it
will move from the very first position in the Tree to the
bottom of the
Tree.
I traced the contents of the dataProvider and the
dataProvider structure
stays
the same, with the "STR_USER_NAME" at the top, but if I look
at the flex app
in
the web browser, its position is at the bottom of the Tree.
This happens for every other item I try to edit... I read in
the
documentation
that the ItemRenderers are recycled, so it means I should be
checking to
make
sure the initial states are covered, but I'm not sure how
this affects my
application.
Can anyone help me out with this ? Its very confusing - I've
tried making
an
ItemRenderer using pure actionscript, mxml and the
combination you see in
this
example and I always end up with the same behaviour - So I
must be missing
something critical...
// ItemRendererUsers.mxml
<?xml version="1.0" encoding="utf-8"?>
<mx:Canvas xmlns:mx="
http://www.adobe.com/2006/mxml"
verticalScrollPolicy="{ScrollPolicy.OFF}"
horizontalScrollPolicy="{ScrollPolicy.OFF}"
creationComplete="initItemRendererUsers();"
>
From my FAQ:
Q: I've created a custom itemRenderer component to use in a
List
based component (Datagrid, TileList, HorizontalList, etc.).
When my List
first displays, everything looks fine, but when I scroll it
or change the
dataProvider, some of the itemRenderers show values or
formatting that
aren't right. How do I fix this?
A: List-based components don't draw a renderer for every item
in the
dataProvider. Instead, they create enough to display what is
on screen now,
plus one or two more waiting in the wings. This means they
recycle the
renderers rather than creating new ones when you change
dataProvider or
scroll up and down. When you use a creationComplete event to
set up the
itemRenderer, that event doesn't happen again when the
renderer is used for
a different set of data. The solution to this is to override
the set data
protected function that most components have.
For more information, check out the following resources:
http://www.adobe.com/devnet/flex/articles/itemrenderers_pt1.html?devcon=f1
http://blogs.adobe.com/aharui/2007/03/thinking_about_item_renderers_1.html
Please note, I post this FAQ weekly, and you can find a
permanent copy of it
here
http://www.magnoliamultimedia.com/flex_examples/Amys_Flex_FAQ.pdf

"peterh8234" <[email protected]> wrote in
message
news:gaqttd$kft$[email protected]..
> Yes - the set and get functions are listed down below.
But the quirky
> behaviour
> is the same regardless of whether I override the set and
get functions or
> not.
>
> I noticed there was another variable called listData -
should I be using
> that
> one or the data variable to read and write to the
dataProvider ?
>
> // _data
> [Bindable] public var _data:Object;
> [Bindable("dataChange")]
> //
> override public function get data():Object
> {
> trace('[ItemRendererDefault.GET data()] called for {' +
> _data.attribute("label") + '}.');
> return _data;
> } // END OF get data()
>
> //
> override public function set data(value:Object):void
> {
> _data.@value = inputText.text;
> trace('[ItemRendererDefault.SET data()] called for {' +
> _data.attribute("label") + '}.');
>
> invalidateProperties();
> } // END OF set data()
Your set data needs to set a flag that gets picked up in
commitProperties()
and does your thing that you were doing before in
creationComplete. You
should see examples of this in the links I posted. Instead of
this:
_data.@value = inputText.text;
you should look at implementing IDropInListItemRenderer,
which will allow
you to dynamically determine which field to look at, instead
of hardcoding
it. You also might wind up overwriting the stored value with
a null value
when the List passes the stored value in. I'd encourage you
to really go
through those links I posted and make sure you understand
what they're
saying. The itemRenderer life cycle is one of the hardest
things to
understand, but once you understand it, it makes many things
in Flex much
easier. It's worth investing the time.

Help required in ALV Tree Control

Hi All,
I am using OO ALV tree Control in my Project every thing is working fine.
in treecontrol 'If we double click on Node I con it displays resultant screen'- its fine for us
'If we double click on Node Text it is displaying nothing means no Event is triggering.
my Requirement is tha 'it should work even if we click on Node Text' . Like in standard Applications SE15 .
Suggest some Methods regarding this. Note All these nodes are Dynamic Nodes comes from Data Base table.
Thanks in Adv.
Murthy

Just check Tcode: DWDM.
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Please, I need help in this,How to make a tree control appear from right to left ??

i working on Arabic project in which we use a tree control and i want it to display its branches from right to left .
i tried to rotate it but it doesn't work because the disclosure triangle still appear on the left .
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You'll need to modify the layout logic of your renderer.
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package
    import mx.controls.treeClasses.TreeItemRenderer;
    import mx.controls.treeClasses.TreeListData;
    public class RightToLeftTreeItemRenderer extends TreeItemRenderer
        override protected function updateDisplayList(unscaledWidth:Number,
                                                  unscaledHeight:Number):void
            super.updateDisplayList(unscaledWidth, unscaledHeight);
            var startx : Number = data ? TreeListData( listData ).indent : 0;
            startx = unscaledWidth - startx;
            if ( disclosureIcon )
                disclosureIcon.x = startx - disclosureIcon.width;
                startx = disclosureIcon.x;
            if ( icon )
                icon.x = startx - icon.width;
            if ( label )
                label.x = 0;

Error calling a method of the tree control in BDC

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I've written an BDC(RFC) to assign people for the activity in an project(cj20n) it works fine in the foreground. But it doesn't work in the background.It doesn't give me error also.I've sap all authorization.
When I connect with XI its throwing me an error "Error calling a method of the tree control" message type A (using the same user to connect r3). I believe something we should do prior handling the tree control in a BDC. IF any body come across this situation please let me know. your help is appreciated.
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Problem in setting default index in Tree Control

hi all,
i am using flex2.0 final release and in my application i am
calling custom function in cretionComplete event
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working properly in final flex meanwhile this same thing i am using
in flex beta3 ...at that time its working properly but the problem
occur only in migration time so can any body tell me what happaning
here...
code....//here MailFolderLists is id of tree control
[Bindable]
public var XLC:XML;
public function initList(event:Event) : void
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XLC = event.target.lastResult;
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thanks buddy
ur suggestion work ....
one more thing i want to know if u have any idea related to
Tree.expandItem method it will work fine in beta3 but same prob not
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i am using
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Tree control: How to disable the selection of a child item

Hello everyone,
Im having trouble with disabling the selection of a child item in a tree control. I dont know if its possible but havent found any answers on this forum regarding this issue.
Example:
Parent tag 1
    child item 1
    child item 2
Parent tag 2
    child item a
    child item b
What i would like to do is being able to select the parent tags but not the child items, because i use the name of the selected item in my program to determine which actions are allowed and those that are not. To avoid this problem i look at the first 4 letters of the name and this way i can determine if it is a parent tag or child item and take appropriate action. Im able to do this because the parent tags have fixed names. But even though nothing happens in software if i select a child item it still lights up, so for the user of the program it looks as if the child items is selected but the program doesnt do anything(because i made it that way). Thats why i want to be able to disable the selection of the child item or at least make the selection colour of the child item transparant so it doesnt look like it is selected.
Can anyone help me with this problem, if there are parts of my question you dont understand, just ask.
greetz
Ynse.

Muks,
your last image disables the whole tree.
To programmatically disables an item use ActiveItem.Disabled? property.
Unfortunately this only has two states, Enabled and disabled (thus grayed).
Ton
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How to get access to Row Data (Child Text) in a Tree Control Pragmatically?

In LabVIEW 2010, I have entered Row Data into a Tree Control pragmatically using the Add Item method and providing the Child Text array and the Child Tag for the Row. When a Row in the Tree Control is selected, I can get the Row Tag in the Value Property of the Tree. But how do I access the Child Text array data when the Row is selected? I can't seem to find a Tree Control Property or Method that will return that data back again.
What I am trying to do is: once a Row in a Tree is selected and a button is pushed, if the Row Tag is valid, I want to transfer all of the Row data into another similarly formatted Tree. To do that I need the Row Data for the Tree and Row that was selected. I can not find a way to get access to this Row Data after it has been entered into the Tree.
Can anyone tell me how to pragmatically access the Child Text or Row Data in a Tree Control from a selected Row in the Tree? I have the Tag for the Row, but how do I access the data?
Thanks for your assistance.
Solved!
Go to Solution.

As mentioned in the posting here, you can use the Active Item:Tag property to set the item to which subsequent property changes apply. This includes pulling the Active Celltring values out in a for loop as you increment the Active Cell:Active Column Number to get the row's Child Text data programmatically as I was originally wanting to do.
Note that wiring a 0 to the ActiveColNum property and reading the String value will return the tree item's visible name (in column 0), but not the unique item Tag (which is somewhat intangible after its creation). Therefore, I save the unique item tag when I add the item to the tree control (the output of the Add Item invoke node) and store it as a separate column of the Child Text array and place it out of sight in the tree control so I have access to it later. It might be useful, it might not.
I find the tree control totally non-intuitive and not well explained anywhere, but that's how a lot of LabVIEW coding is I guess. Play with it long enough and you become an expert. I had to learn the hard way, but I hope this helps someone else.
-Richard
"Computers are useless. They can only give you answers." - Pablo Picasso

UIX:Tree Control

Hi,
Has anybody used or know to use the UIX:Tree control part of the UIX Simple JSP Components? If so can you please tell me if this helps creating a DHTML Tree component?
Thanks
mn

Hello there,
You should check out the "Data Trees" chapter of the UIX Developer's Guide. It goes into a lengthy description of the tree component and how to code it in UIX. The tree component does not use DHTML, but rather rerenders based on its state (what is expanded and collapsed).

Move collapsed group in tree control expands it

In LV 2010, I have a tree control. If I collapse a group and move it to a new location in the tree, it is expanded when I drop it in its new location. Is this a configurable option? A bug?

Attached is a VI that shows what I'm talking about. You collapse the group, drag and drop it to a new place in the tree, and it is automatically expanded.
I believe I have the settings you specified.
Attachments:
tree control example.vi ‏6 KB

Tree Control - Performace - ITS 620

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