Tree - selecting and expanding root node

I want to have a tree root node expanded at start.
I have tried:
tree.selectedIndex = 0;
if (tree.selectedItem && tree.dataDescriptor.isBranch(tree.selectedItem))
tree.expandChildrenOf(tree.selectedItem, true);
...but it doesnt work.
Anyone ...?

                var node:XML = mainTree.root as XML;
                mainTree.expandItem(node, true);
You could also toggle it:
                var node:XML = mainTree.root as XML;
                var isOpen:Boolean = mainTree.isItemOpen(node);
                mainTree.expandItem(node, !isOpen);

Similar Messages

ADF: Tree Refresh after Expanding a node. Please Frank have a look!

About this post:
Re: ADF: Tree Refresh after Expanding a node
Frank answered that he doesn't notice that behavior. I found out that this happens if an appication uses a custom skin.
In SRDemoSampleADFBC, SRManage.jspx (Management from menu), if you make the explorer window small enough not to cover the whole tree, you can notice this (the page jumps to the top).
Now if you change in adf-faces-config.xml the "skin-family" tag to "oracle", you will see that the tree component has changed (it has no triangle icons why this happens) and the page doesn't refresh.
Minas

It seems that there's more to the tree expansion icon than the skin definition. We're using the minimal skin and ADF puts out a special character to represent the disclosure symbol (which by the way, renders differently on IE6, than IE7, than Safari or Firefox on Mac). However, switching to the Oracle skin, the disclosure symbol comes out as a full-on image (triangle including the +). We have found this frustrating because the triangles seem not sufficiently suggestive to our users - but switching to the Oracle skin has other issues with white-on-white text.
But in any case, the tree refresh after node expansion is another annoyance as I described in the other thread linked here (including URL to see problem in action).
Cheers, Mark

ADF Tree: how to access root node after "Show as Top" selected on sub node

I am currently working on a project that using ADF tree and implementing some search/filter functionality. I need to find the java API calls to get the new root node information after UI user select a sub node in the tree and clicked “show as top"(so search are done only on the current tree. Can someone help on this?

Hi ,
In our project we require to implement ADF menu tree inside <af:menulist>.
We require to show 3-4 child menuitems inside 2 parent menus.
Home
--> Inbox
-->Search
Patient
--> Information
--> Search
Can you please tell steps to implement <af:menutree> to have child menuitems like Inbox, Search inside parent like Home ? I searched on ADF sites but not much of help there.
Thanks
Suhas

Tree table-initially expand all nodes raises error when closing a node 11g

Hello,
Frank Nimphius posted a blog entry about how to initially display all the nodes in a tree or table here:
[http://thepeninsulasedge.com/frank_nimphius/2007/12/19/adf-faces-rc-initially-expanding-all-nodes-in-a-tree-or-tree-table/|http://thepeninsulasedge.com/frank_nimphius/2007/12/19/adf-faces-rc-initially-expanding-all-nodes-in-a-tree-or-tree-table/]
This works very well. However, when the user tries to close a node, a NullPointerException is thrown.
Below is the stacktrace.
Does anyone know how to work around that issue?
java.lang.NullPointerException
     at org.apache.myfaces.trinidad.model.RowKeySetTreeImpl$Search.find(RowKeySetTreeImpl.java:608)
     at org.apache.myfaces.trinidad.model.RowKeySetTreeImpl._setContained(RowKeySetTreeImpl.java:496)
     at org.apache.myfaces.trinidad.model.RowKeySetTreeImpl.add(RowKeySetTreeImpl.java:97)
     at oracle.adfinternal.view.faces.renderkit.rich.TableRendererUtils.decodeDisclosedRowKeys(TableRendererUtils.java:774)
     at oracle.adfinternal.view.faces.renderkit.rich.table.BaseTableRenderer.decodeIncompatiblePropertyKey(BaseTableRenderer.java:198)
     at oracle.adf.view.rich.render.RichRenderer.decode(RichRenderer.java:203)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.__rendererDecode(UIXComponentBase.java:1089)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.decode(UIXComponentBase.java:714)
     at org.apache.myfaces.trinidad.component.UIXTreeTable.decode(UIXTreeTable.java:133)
     at org.apache.myfaces.trinidad.component.UIXCollection.processDecodes(UIXCollection.java:193)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl$ApplyRequestValuesCallback.invokeContextCallback(LifecycleImpl.java:1113)
     at org.apache.myfaces.trinidad.component.UIXCollection.invokeOnComponent(UIXCollection.java:1030)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.invokeOnComponent(ContextSwitchingComponent.java:153)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at oracle.adf.view.rich.component.fragment.ContextSwitchingComponent.invokeOnComponent(ContextSwitchingComponent.java:153)
     at oracle.adf.view.rich.component.fragment.UIXPageTemplate.invokeOnComponent(UIXPageTemplate.java:208)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponent.invokeOnComponent(UIComponent.java:731)
     at javax.faces.component.UIComponentBase.invokeOnComponent(UIComponentBase.java:664)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:303)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:175)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
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     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:181)
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     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
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     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
     at edu.wisc.csa.web.ResponseHeaderFilter.doFilter(ResponseHeaderFilter.java:36)
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OK I have tried Frank's suggestion about the 2 entries in the managed bean and it works but I cannot collapse my child node !
I have a Master-Detail-Detail setup.
In the Grandparent I have this :
RowKeySet rks = new RowKeySet(true);
table1.setDisclosureState(rks);
this.grandParentTable = table1;
and in my Parent table I have this :
RowKeySet rks = new RowKeySet(true);
table2.setDisclosureState(rks);
this.parentTable = table2;
ie the same.
In my child I have nothing just the default accessors.
The collapse works OK for the Grandparent but when I click Hide for the Parent it does not do anything - no error message either.
cheers

Collapse top node and expand below node

Hi,
In my Query, I have inserted a characteristic2 below an existing characteristic1(like a hierarchy). The problem I m facing is that if I set "Collapse node" property in the top characteristic(Characteristic1) it is also applied to the below characteristic(Characteristic 2). I want the characteristic 1 to be collapsed by default and characteristic 2 to be expanded by default. Is this possible?
Regards,
Krishna

Hi
I hope your requirement is not possible.Be coz char 2 will be dependent on Char1.When u collapse Char1 automaticall Char2 also collapsed.
Regards
Ram.

How to disable selection of root node in JTree

Hi all! Thanks for taking a minute to read my post!
I am writing a really basic JTree for showing a list of items.
Here is some of the code:
/** Create a basic tree **/
DefaultMutableTreeNode rootNode = new DefaultMutableTreeNode("Title");
DefaultTreeModel treeModel = new DefaultTreeModel(rootNode);
JTree tree = new JTree(treeModel);
/** Method to return the string of the current highlighted selection **/
public String getSelectionString()
DefaultMutableTreeNode node =
tree.getSelectionPath().getLastPathComponent();
return (String)node.getUserObject();
I would like to disable selection of the root node of my JTree.
Thus, if I make a call to getSelectionString() above, it would return null instead of the string that represents the root label.
I have read the following forum on disabling various TreePaths and TreeNodes in a JTree:
http://forum.java.sun.com/thread.jsp?forum=57&thread=224691
This forum suggests implementing the TreeSelectionListener interface and the TreeSelectionModel class and over-riding the addSelectedPath() methods. I tried this suggestion, and I was able to enable and disable the different children of the Jtree, but the root of the JTree would not disable.
I suppose that I could just simply remove the visibility of the root node, but I really want to avoid that option if possible.
Wait --- let me be clear ---- I want to disable the selection of the root node only - still allowing selection of all its children.
Any suggestions?
Am I missing something really simple here?
Did I explain my problem clearly?
Thanks in advance!
jewels

simply try this..
in the
public void valueChanged(javax.swing.event.TreeSelectionEvent event);
method of TreeSelectionListener impelentation get the
TreePath tp = event.getPath();
from TreePath get the component and then remove the selection from the treePath if it is the node u were checking/root node in this case
tree.getSelectionModel().removeSelectionPath(tp);
Try out....

Expanding JTree nodes to the left.

I have a JTree with a custom model and cell renderer but now i'd like to flip the entire tree so that the root node ends up in the upper right corner and the child nodes expand to the left (instead of to the right).
I tought this should be easy enough but now I'm very confused; any help is appriciated!

Hi,
as a general guideline - you want to set something - so search for all set....-methods that class has or inherits.
public void setComponentOrientation(ComponentOrientation o)
Set the language-sensitive orientation that is to be used to order the elements or text within this component. Language-sensitive LayoutManager and Component subclasses will use this property to determine how to lay out and draw components.
At construction time, a component's orientation is set to ComponentOrientation.UNKNOWN, indicating that it has not been specified explicitly. The UNKNOWN orientation behaves the same as
ComponentOrientation.LEFT_TO_RIGHT.
To set the orientation of a single component, use this method.
Hope, this helps
greetings Marsian

XPath for root node in condition editor

Hi,
I have a HTTP to IDOC scenario. I have to accept any incoming document,(i will know only at runtime whether it is ORDERS or INVOICE or ASN etc) and post it to the respective receiver based on what is the name of the root node. But how do i specify this in the condition editor? if i give /* or name(/*) it does not work.Can anyone suggest a solution for this?
Thanks
Shakthi

Well I have one solution but don't konw if it is worth for you.
First create one mapping called pre_mapping in this mapping map all fields and the root node value to the target structure correspondingly . Now use BPM with simple receive & send steps. BPM should send the message back to XI.
Use the final mapping with this messge retuned from BPM.
Now use the x-path and select the field from source structre (which BPM has sent back to XI) which contains IDOC type. So in this case your sender system will be BPM.

Leaf Node to root Node Expansion

I have constructed a tree. In initially it is closed I am giving the leaf node name in the text box. after that with the text listner how can I generate tree expansion display?

First, get the tree model using getModel().
Then, using the tree model, get the root node using getRoot() (cast as TreeNode).
Then, starting with the root node,
1. check to see if the node is the one you are looking for.
2. If it's the one you are looking for, stop.
3. check to see if the node is a leaf using isLeaf(node).
4. If it's a leaf check if the stack is empty. If so, stop (you didn't find it). Otherwise, pop the next node off the stack, make it the current node and go to step 1.
5. If it's not a leaf, get the number of children using getChildCount(node). Use getChild(node, index) to get all the children in order and push them onto the stack except the last one. Make that node the current node.
6. Go to step 1.

A function for generate a actual tree select

hi,
i tried to write a function that generate a actual tree select and i think this is very helpful
Create Or Replace Function Generate_Tree_Fun(p_Path Varchar2,
p_Delimiter Varchar2,
p_Level Integer,
p_Tbl_Name Varchar2,
p_Parent_Field Varchar2,
p_Child_Filed Varchar2)
Return Varchar2 Is
v_Txt Varchar2(5000) := '';
v_Row_Num Number;
v_Max_Count Number;
v_Child Varchar2(100);
v_Parent Varchar2(100);
v_Level Number := p_Level;
Begin
If (v_Level = 1) Then
Return '';
End If;
If (v_Level > 1) Then
v_Txt := '|' || Lpad('_', 6, '_');
End If;
If (v_Level > 2) Then
For i In 1 .. p_Level - 2 Loop
v_Level := v_Level - 1;
v_Child := Ltrim(Regexp_Replace(p_Path,
Ltrim(Replace(p_Path,
p_Delimiter,
')(' || p_Delimiter) || ')',
'\' || v_Level),
p_Delimiter);
Execute Immediate 'Select t.' || p_Parent_Field || '
From ' || p_Tbl_Name || ' t
Where t.' || p_Child_Filed || ' = :1'
Into v_Parent
Using v_Child;
Execute Immediate 'Select a, b From (Select Row_Number() Over(Order By t.' ||
p_Child_Filed ||
') a,Count(1) Over(Partition By t.' ||
p_Parent_Field || ') b,t.' || p_Child_Filed ||
',t.' || p_Parent_Field || ' From ' || p_Tbl_Name ||
' t Where t.' || p_Parent_Field ||
' = :1 Order By t.' || p_Child_Filed || ') Where ' ||
p_Child_Filed || ' = :2 '
Into v_Row_Num, v_Max_Count
Using v_Parent, v_Child;
If (v_Row_Num <> v_Max_Count) Then
v_Txt := Rpad('|', 20, ' ') || v_Txt;
Else
v_Txt := Rpad(' ', 20, ' ') || v_Txt;
End If;
End Loop;
End If;
Return v_Txt;
End;
select Generate_Tree_Fun(sys_connect_by_path(e.empno,','),',',level,'emp','mgr','empno') || e.ename
from emp e
start with mgr is null
connect by e.mgr=prior e.empno
enjoy it

Arash wrote:
hi,
i tried to write a function that generate a actual tree select and i think this is very helpful
We are so proud of you!

Tree selection by user or programmatically

Hallow All!
How can I know if tree selection mode by user or programmatically?
I want to listen - tree selection and do some operation only if the selection made by user (mouse or keyboard) and do nothing if the selection made programmtically!
I tried to use isFocusOwner methos:
addTreeSelectionListener(new TreeSelectionListener() {
               public void valueChanged(TreeSelectionEvent e) {
                    if(!TopologyTree.this.isFocusOwner()){
                         return;
}but is doesn't work, if some text field in another panel has the focus then the tree gain the focus only after the tree selection event performed
any help will be most appreciated!
Eran.

Create a substitution rule in which user name from the header is substituted to any of the fields in vendor line item. (assignment, text etc). After this you can use this for APP.
Tarun

Root-Node + Child -Node +Line-Node

How can I implement with alv-tree the following requirement:
Root-Node -> Customer-Nr
Child -Node -> Range
Line-Node -> Datas
Regards
Ilhan

refer Tcode DWDM
or
refer link
http://www.sapdevelopment.co.uk/reporting/alvhome.htm
reward if useful.

Row Selection for second and subsequent level nodes in tree table

Hi All,
We have a .jsff page with tree bindings to display a three-level hierarchy tree table.Suppose the hierarchy is
-> Department
->-> Employees
->->-> Employee details.
I have a use case where-in when we add the employee node within a department,the department node must expand and the newly added employee node must be selected.
In both the cases(for new department or employee), we are following the approach mentioned below:
1. Get the treeTable Iterator.
2.Adding the new object to the java ArrayList which is bound to the corresponding level in the tree.
3.Refreshing the treeTable iterator.
4.Execute treeTable.setSelectedRowKeys()
5.Add a partial target to the treetable.
The issue is that the new employee gets added but the upper-level department node collapses and no selection is performed on the new employee node.
But when we add a new department node, it gets selected on creation.
Is there any additional steps to be performed for second-level row selection?

Hi,
Thanks for the reply.
I looked at the code given in sample 61.
In the sample, a new node is not added dynamically (for ex.either new location or its child nodes.)
As mentioned in the above post, after adding a new node at a level in our use case, when we perform the refresh of the tree-table's iterator,the selection state of the rows is not shown on the table.
If the tree-table's iterator is not refreshed and the treeTable.setSelectedRowKeys() is executed, the rows get selected but the subsequent node additions do not show up in the table as the table's iterator is not refreshed.
Any sample code is available where in both the addition of new node and its selection is performed at the same time?
Thanks.

JTree - Create nodes and expand

Hi there,
I have made a file-tree from the swing jtree, where My Computer is the root, then C:/ etc, Program Files, etc...
The problem I'm having is that I'm trying to open up a node if a link has been clicked. For example.. if A shortcut to C:/Program Files/Pictures/pic.jpg was clicked, then it should go the C:/ node, create it's children, and expand it, go to Program Files node, create it's children and expand it, etc until pic.jpg is visible.
TreePath x = new TreePath(ta);
TreePath y = x.pathByAddingChild(myComputer);
TreePath z = y.pathByAddingChild(programFiles);
tree.expandPath(y);
The above is the general idea of what I'm trying... I can't see why this doesn't work. (ta is empty root folder, then myComputer and programFiles are other treenodes).
Any ideas?
Thanks.
David

Create your TreeModel using the FileSystem as the underlying data store, as shown in this article:
http://java.sun.com/products/jfc/tsc/articles/jtree/
The use JTree#setAnchorSelectionPath when the user clicks on a file to select that item in the tree. Also look at JTree#scrollPathToVisible if your JTree is in a scroll pane.

Reloading JTree and expanding last selected rows

I'm working on an applet that loads the nodes of a JTree from a database. When a node is selected, its data are displayed in a different panel. When a "reload" button is clicked, all the nodes in the JTree are removed except for the root node, and the JTree is recreated from the database. I'm try to get the new JTree to expand and select the rows that were selected before reloading, but I can't get this to work.
Before removing the nodes, I save the currently selected row numbers using JTree.getSelectionRows(). After recreating the JTree, I re-select the previously selected rows and try to expand them:
// tree is the name of the JTree.
tree.setSelectionRows(selected);
for (int i= 0; i < Array.getLength(selected); i++) {
            System.out.println("selected row: " + selected);
tree.scrollRowToVisible(selected[i]);
tree.updateUI();
The previously selected rows do not automatically become visible in the resulting JTree. I also tried using tree.expandRow instead of scrollRowToVisible, with the same results.
Any help would be appreciated!

I think part of your problem is this...
When you repopulate your tree, and only the root node is visible, getRowCount() will return 1. When you call expandRow(x) where x > 1, the result is basically a no-op (nothing happens). This is the correct behavior for these methods.
In other words, I think you need to come up with a whole new algorithm.
Let's assume you have a tree that looks like...
Node 0
|__________Node 0.0
|               |__________Node 0.0.0
|
|__________Node 0.1
|__________Node 0.2
                 |__________Node 0.2.0
                 |__________Node 0.2.1Try this...
//save the current open/closed state of the tree and selection state
Vector<Integer> selectedRows = new Vector<Integer>();
Vector<Boolean> openClosed = new Vector<Boolean>(tree.getRowCount());
openClosed.setSize(tree.getRowCount());
for( int i = 0; i < tree.getRowCount(); ++i )
   if( tree.isExpanded(i) )
        openClosed.set(i,true);
   else
        openClosed.set(i,false);
   if( tree.isRowSelected(i) )
       selectedRows.add(i);
//at this point we have all the needed state information
// rebuild to tree from the database now
// then do this
int rowIndex = 0;
while( rowIndex < tree.getRowCount() )
    if( openClosed.getElementAt(rowIndex).booleanValue() == true )
         tree.expandRow(rowIndex);
         // note that if a row gets expanded, getRowCount() will increase
    ++rowIndex;
// at this point, your tree should be expanded exactly as it was before the reload
int[] rows = new int[selectedRows.size()];
int index = 0;
for( Integer i: selectedRows )
   rows[index++] = i;
tree.setSelectionRows(rows);
// at this point the tree should have the same selection as before the reload.I hope this helps. Please reward me the Duke Dollars if it does. Not awarding the Duke Dollars kills the system (which is an honor system). A dead system hurts us all.
P.S. I guess I never referenced the little tree I drew. Oh well. It looks great doesn't it?

Tree - selecting and expanding root node

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