Expand the node of the tree dynamically

Similar Questions

• Expand the tree when the label is clicked

  Hello
  I work with JDev 11 g... I created a tree, but it is developing only the click on the ">" button. But when I click on the label the tree does not grow... I saw this link and tried, but I always encounter problems as mentioned in the link... So is there another way that i cam expand when you click on the label... PL suggest me some examples...
  
  http://www.Oracle.com/technology/products/jdev/tips/fnimphius/js_disclose_tree_path.html

  Hello

  trurns that with a little change in the script and event that you expect, it works.

   
        function expandDiscloseNode(event){
                      var _tree = event.getSource();
                      rwKeySet = _tree.getSelectedRowKeys();
                      var firstRowKey;
                      for(rowKey in rwKeySet){
                         firstRowKey  = rowKey;
                          // we are interested in the first hit, so break out here
                          break;
                      }
                      if (_tree.isPathExpanded(firstRowKey)){
                           _tree.setDisclosedRowKey(firstRowKey,false);
                      }
                      else{
                          _tree.setDisclosedRowKey(firstRowKey,true);
                      }
                 }
      
  

  ... and the tree

  
  ...
    
    
  

  Frank

• Expand the tree control

  I now have a tree control from an ArrayCollection collection and using the defaultDataDescriptor.
  
  At this point in the program, the data exist only in the myTree.dataProvider and the root node is myTree.dataProvider [0] or myTree.dataProvider.source [0] and I can see variables window that correct data is found here.
  
  What I put in myTree.expandChildrenOf for 'item' (? point?, it's true). All I can think of returns:
  
  "Cannot access a property or method of a null object reference."
  
  Someone has any idea how to do this job.
  
  Doug

  Good, solved the problem.

  ExpandChildren to work, you must do things in the following order. First create the tree and set all the properties you need. Then, you must add the tree to its container, then call validateNow() and then finally, you can call expandChildren.

  Thank you very much for you help. Until you answered, I was stuck on thinking that it should be the point that was wrong.

  Doug

• Expand the tree after loading of dataProvider

  I need to develop all the item in the Tree control after data has been loaded using dataProvider.

  Here is the code

  public function loadTree (): void
  {
  cursorManager.setBusyCursor ();
  var conn: NetConnection = new NetConnection();
  conn.objectEncoding = ObjectEncoding.AMF3;
  Conn.Connect (this.) Meta.Gateway + ' web/gateway.php');
  conn.addEventListener (SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
  var resp:Responder = new responder (onLoadTreeComplete, onFault);
  Conn.Call ("Client.Disk.GetTree", an RESP);
  }

  private void onLoadTreeComplete(e:*):void
  {
  trvTreeview.labelField = "label";
  trvTreeview.dataProvider = e;
  / / trvTreeview.expandChildrenOf(trvTreeview.dataProvider[0],true);
  cursorManager.removeBusyCursor ();
  }

  This only works if I call this function to any other event (such as a button click event) and not in the complete netconnection event.

  trvTreeview.expandChildrenOf(trvTreeview.dataProvider[0],true);

  How this could be done?

  Try to call validateNow before expandChildren or use callLater

  Alex Harui

  Flex SDK Developer

  Adobe Systems Inc..

  Blog: http://blogs.adobe.com/aharui

• Expand the whole tree of the af:tree component nodes programmatically

  Hello dear,
  Could you please help me by posting a tree with all nodes to disclose. Forum ADFCodeCorner (http://www.oracle.com/technetwork/developer-tools/adf/learnmore/21-expand-tree-on-initial-render-169158.pdf) shared a code that does not disclose the first level nodes. I made a few changes to disclose all nodes, but it was decided to disclose only the first-level nodes.
  
  public class treeNodeExpander
  {
  
  RKS RowKeySet;
  public treeNodeExpander()
  {
  }
  The listener to phase itself is referenced in a bean managed property of method 'beforePhase' of the f: view component.
  < f: view beforePhase = "#{treeSampleBacking.beforeRenderOnViewLoad}" >... < / f: view >
  
  public void beforeRenderOnViewLoad (PhaseEvent phaseEvent)
  {
  Try
  {
  
  If (phaseEvent.getPhaseId () is PhaseId.RENDER_RESPONSE)
  {
  
  FacesContext fctx = FacesContext.getCurrentInstance ();
  AdfFacesContext adfFacesContext = AdfFacesContext.getCurrentInstance ();
  Make sure that this code is run on the original page only request
  Boolean isInitialRequest =! adfFacesContext.isPartialRequest (fctx);
  If (isInitialRequest)
  {
  
  UIViewRoot viewRoot = fctx.getViewRoot ();
  Tree of UIComponent = viewRoot.findComponent ("t2");
  If (tree! = null)
  {
  Model CollectionModel (CollectionModel) = ((RichTree) tree) .getValue ();
  JUCtrlHierBinding treeBinding = (JUCtrlHierBinding) model.getWrappedData ();
  JUCtrlHierNodeBinding RootNode = treeBinding.getRootNodeBinding ();
  RKS = (((RichTree) tree) .getDisclosedRowKeys ());
  getAllTreeNodes (rootNode);
  Collections.sort ();
  ((RichTree) tree) .setDisclosedRowKeys (rks);
  
  }
  }
  }
  }
  catch (Exception ex)
  {
  System.out.println ("Exception" + ex.getMessage ());
  }
  Add the code in the event here...
  }
  
  
  Recursive function that get all the child node of the node root
  
  public void getAllTreeNodes (JUCtrlHierNodeBinding rootNode)
  {
  
  If (rootNode.getChildren () is nothing)
  {
  System.out.println ("root node has no Childs");
  }
  on the other
  {
  NodeList list < JUCtrlHierNodeBinding > = rootNode.getChildren ();
  If (rks is nothing)
  {
  RKS = new RowKeySetImpl();
  }
  for (node JUCtrlHierNodeBinding: nodeList)
  {
  node.getChildren ();
  L ArrayList = new ArrayList();
  l.Add (node.getRowKey ());
  System.out.println ("Roe key is" + node.getRowKey () m:System.NET.SocketAddress.ToString ());
  RKS. Add (l);
  getAllTreeNodes (node);
  }
  System.out.println ("this is the Else Condition");
  }
  
  }
  
  }

  Zeeshan please follow this link http://biemond.blogspot.com/2009/11/find-and-expand-all-nodes-of-adf-tree.html

• Dynamically change the height of the trees

  Hello, I have a tree in a VBox and I want to enlarge the height of the tree dynamically or set it to 100%. I know that using < mx:Tree height=100%/ > I can put 100%, but I use tree.height. How can I do not to see the line that Flex automatically put in my Vbox?

  If someone tell me how to put 100% when I'm with tree.height = it enough. If anyone has a better solution also say. I listened on Tree.height = Tree.measuredHeightOfItems (en); but I don't know how I can use it.

  I'm not sure I understand your question, but it might be good for you to watch in the .percentHeight instead of .height property.

  http://livedocs.Adobe.com/Flex/3/langref/MX/controls/tree.html#propertySummary

  The percentHeight property is inherited from UIComponent.

  In your project, use it like this:

  yourTreeControl.percentHeight=100;
  

• Select multiple items in the tree programmatically

  What is the approach recommended for selection by program several elements in a tree? There is an API on the model of selecting either TreeView.getSelectionModel () .select (t, object) to select a single item, but it is not an equivalent API to select multiple items, i.e. TreeView.getSelectionModel (.select(T...objects)).
  
  One approach is to expand the tree and iterate through all nodes and calculate the index of each item to be selected and then call the method TreeView.getSelectionModel ().selectIndices(int...indices).
  In my case, I want only the records that contain the selected items to be developed for an additional step is to browse all folders and the collapse of those that do not contain the selected items.
  
  Is there an easier approach?
  
  Thank you.
  Stefan

  Don't do what suggests Zonski! :-)
  These lists are read-only - you will quickly get a runtime exception.

  The best approach is to just a multiple selection to be on and then loop through the desired selection list, by selecting each element individually. Because multiple selection is enabled, select calling repeatedly will not erase the previous selection.

  -Jonathan

• How do I open 'My Computer' with the tree of folders already signs?

  What I want, it's for when I open the application 'My Computer', to bbe able to see the the folder tree in the left pane, without having to click the Folders button on the toolbar. Some of our computers already do this because someone put in place, but the rest don't. We use Windows XP.

  TA, Paul

  Select the following automatically expand the trees:
  Go to the control panel in Windows XP

  Click on Start-Run-Control Panel and then double-click Folder Options.

  Select the view tab and under the Advanced settings: section.
  check the display Simple folder view in Explorer folders list and click OK.

  I think that's what you're looking for.

  Thank you

• The single Win Explorer Navigation pane click on the name of the folder to expand the subfolders

  In Win XP, you can even click on the folder name to develop the next level of subfolders.

  In Win 7, it takes a double-click and the > is difficult to achieve.

  What a pain.  How can get fixed?

  Other than replacing by another file manager.

  Hello

  I understand that you are facing difficulties during the expansion of the subfolders on the Windows Explorer Navigation pane. I understand the inconvenience.

   

  You must expand the tree first and then do the following.

  1. open WindowsExplorer.

  2. expand and click on Tools folder options -->

  3 in the navigation pane, select the check box to display all records and extend automatically to the current foldedr and click ok.

  You can also follow the steps in the article.
  http://support.Microsoft.com/default.aspx/KB/126449

  Hope it will be useful. If you still have questions, please reply and we will be happy to help you.

• Bug in display of the tree when adding nodes dynamically?

  I am building a tree dynamically, child nodes are added only after a user clicks to open a node, and a call is made to see if there are children.
  
  The control is very sensitive, but after a few clicks, that it is as if an object of the same color that the background appears in the middle of the control tree obscuring nodes beneath it.
  
  If I click on the empty area at the location where the darkened nodes would fall meet and expand/collapse becoming visible/invisible as they fall under this area or beyond. If I hover over the empty box I see the node highlighting as a strip about 5 pixels wide on the left side.
  
  Revalidation of the tree redraws not this area. Has anyone seen this before, and how can I fix it?

  The problem disappeared. I think it was a bug is triggered by setting the selected items after I had updated the dataProvider and refreshing the tree.

  I had another question where the selectedItems disappeared after update of the tree. I fixed it by setting using callLater() selectedItems, because put immediately after the update the dataProvider of the tree did not work as long as the selection was lost anyway. callLater to do this fixed the issue of the selection and now apparently also the issue with a section of the tree being overshadowed.

• Expand all the nodes in a tree table

  Hello

  I have a tree table in my JSPX, which needs to expand all its nodes when the page is loaded. Also mis the data control is a POJO data contrl where I have a collection (ArrayList), which serves to make this table from the tree. Tree table is displayed as expected with it of the child nodes.

  
  

  I was referring rare item such as these... https://blogs.oracle.com/jdevotnharvest/entry/how_to_programmatically_disclose_a to expand all nodes. But I get an exception of cast of class on the piece of code following

  Code:

  CollectionModel model = (CollectionModel) your_af_tree_reference.getValue();
  

  Exception:

  javax.faces.el.EvaluationException: java.lang.ClassCastException: oracle.adfinternal.view.faces.model.binding.FacesCtrlHierBinding$FacesModel cannot be cast to oracle.adf.view.rich.model.CollectionModel
  at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:51)
  

  ......................

  I use Jdev 11.1.1.4

  Let me know if you need more details to achieve this please.

  Refer to this:

  http://www.Oracle.com/technetwork/developer-tools/ADF/learnmore/78-man-expanding-trees-treetables-354775.PDF

  You can download the sample code from:

  http://www.Oracle.com/technetwork/developer-tools/ADF/learnmore/index-101235.html

  Search for number 078.

• How to change the icon of the node in a tree when the node collapse or expand?

  How to change the icon of the node in a tree when the node collapse or expand?

  Hello

  You may need to use the custom for this skin.

  Arun-

• make the tree nodes "BOLD"

  Hello
  
  I have a created a structure tree
  -one
  -aa
  -aaa
  -aaa
  b
  -bb
  -bbb
  -cc
  -ccc
  I followed the steps given in the message
  make the tree nodes that are engaged in "BOLD"
  (a)
  Now if I expand the root node, then all of the child nodes automatically become "BOLD", that is if I select 'a '.
  all nodes below becomes "BOLD".
  -a
  -aa *.
  -aaa
  -aaa
  b
  -bb
  -bbb
  -cc
  -ccc
  
  How can I avoid this problem what I want is the selection if 'a' only 'a' should be bold not her children
  now when I select 'aa' or 'bb' only her parents must be "BOLD" not his children.
  
  (b)
  My second problem is that while the page loads for the first time his having the whole tree is in bold how prevent this from happening.

  If the node selected for that tree is P100_SELECTED_NODE_ITEM

  Add the following code to the onload code ("run when the page loads" article on page or dynamic action shot page load)

    selected_node= $('#'+$v('P100_SELECTED_NODE_ITEM')).children('a:first');
    selected_node.parents('li').each( function(){
     $(this).children('a:first').css('font-weight','bold');
     });
  

• How to set programmatically the current node in a tree view of the ADF.

  Hello
  

  I'm trying to understand how to set programmatically the current node in a tree view of the ADF.

  My use case example is quite simple; If we take the sample application ADF Summit where under Management Summit, we have a tree view on the left with a list of high level of the country which in turn contain a subset of customers; then, in the right pane, we the customer detail information.

  What I'm trying to achieve is a solution by which I can add a new customer, commit and then to the tree show the client newly created as the currently selected entry.

  I use a pop-up dialog box to create my new entry of the customer and everything works well in this area, and my newly created folder is saved in the database.

  I know how to force the tree to cool off, but what I can't understand is how to do so, it highlights the newly created folder.

  Any help would be much appreciated.

  Refer

  https://blogs.Oracle.com/jdevotnharvest/entry/how_to_programmatically_disclose_a

  http://www.Oracle.com/technetwork/developer-tools/ADF/learnmore/78-man-expanding-trees-treetables-354775.PDF

• Possibility to hide nodes in the tree?

  Hi all

  I have reviewed the documentation, used Google and had a search in this space, but I can't find anything relevant...

  We have a number of people who are accustomed to using SQL * Plus for Windows (Windows-specific SQL * more client that has been deleted, I believe in GR 11, 1 material) to do their work (mainly support), and there are a few things that don't miss if force us to use 'classic' SQL * more in one window BACK. SQL Developer is a replacement of logic, but one of the questions a team member has raised is that same SQL Dev gives you all the permissions that you wouldn't in SQL * Plus, it has make it very easy to, for example, expand the 'Packages' in the tree and watch and potentially "inadvertently" to make a change to the code.

  Is it possible to hide certain nodes in the tree? Yes, I know that we can appropriate Oracle security to user to configure users such that they do not have permission on the particular objects, but I'm looking for something 'quick and dirty' at the moment. No real security, but something that makes it less likely that someone will make an involuntary change.

  Kind regards

  John

  Hi John,.

  You can "hide" the nodes using the preferences: filter database browser. It works at the level of the types of database objects. This is the level that you want to say or you want to hide from the nodes in a level of detail more?

  Best regards

  Joop