working with tree UI

[Former Member]

Hi All,

I am able to populate my tree UI element but the problem i am facing can be illustrated as follows:

wut exactly I req:

A-> a1, a2, B -

---

> b1, b2, b3, C->c1

here A,B,C are nodes and a1, a2, b1, b2, b3 and c1 are attributes of A, B, and C nodes respectively

here A, B should be expandable nodes n C is the base which is not expandable.

but the resul I am getting is:

A is cummin fine it is expandable B only first element for each A is cumming expandable but rest of b non expandable. and all C is cumming under the first B expandable instead of cummin under the different B as it is supposed to.

I am pasting the code below:

if(firstTime)

{

try

{

IWDResourceHandler resourceHandlerForTree = null;

resourceHandlerForTree = WDResourceHandler.createResourceHandlerForCurrentSession();

IPrivateTreeView.IVn_FolderContentNode rootFolderContentNode =

wdContext.nodeVn_FolderContent();

IPrivateTreeView.IVn_FolderContentElement rootFolderContentElement;

if(wdContext.nodeVn_Roles().size()!=0)

{

for(int i=0;i<wdContext.nodeVn_Roles().size();i++)

{

rootFolderContentElement =rootFolderContentNode.createVn_FolderContentElement();

rootFolderContentElement.setText(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).getVa_RoleDesc());

rootFolderContentElement.setHasChildren(true);

rootFolderContentElement.setIgnoreAction(true);

rootFolderContentNode.addElement(rootFolderContentElement);

if(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().size()!=0)

{

//strt

for(int j=0;j<wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().size();j++)

{

IPrivateTreeView.IVn_FolderContentNode folderContentNode = rootFolderContentElement.nodeVn_ChildNode();

IPrivateTreeView.IVn_FolderContentElement folderContentElement;

folderContentElement = folderContentNode.createVn_FolderContentElement();

folderContentElement.setText(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().getVn_EntlmtElementAt(j).getVa_EntlmtDesc());

folderContentElement.setHasChildren(true);

folderContentElement.setIgnoreAction(true);

folderContentElement.setIsExpanded(true);

folderContentNode.addElement(folderContentElement);

if(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().getVn_EntlmtElementAt(j).nodeVn_Authcode().size()!=0)

{

IPrivateTreeView.IVn_FolderContentNode folderContentNode1 =folderContentNode.nodeVn_ChildNode();

IPrivateTreeView.IVn_FolderContentElement folderContentElement1;

for(int k=0;k<wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().getVn_EntlmtElementAt(j).nodeVn_Authcode().size();k++)

{

folderContentElement1 = folderContentNode1.createVn_FolderContentElement();

folderContentElement1.setText(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).nodeVn_Entlmt().getVn_EntlmtElementAt(j).nodeVn_Authcode().getVn_AuthcodeElementAt(k).getVa_AuthcodeDesc());

folderContentElement1.setHasChildren(false);

folderContentElement1.setIgnoreAction(false);

folderContentElement1.setIsExpanded(false);

folderContentNode1.addElement(folderContentElement1);

}

}

}

here Roles node is the parent node ie A , entlmt node is B and C is authcode node.

B is cummin in correct level but not all B's are expandable where as according to my data source all B's should be expandable

Please provide some assistance.

Thanks & Regards

Jaspreet Kaur

[sanyev · Accepted solution]

Hi Jaspreet Kaur ,

The problem that you are facing is because of lead selection in your recursive node. I was able to reproduce the problem that you mentioned using the code that you provided. The problem lies in the way you fill data to the recursive context node.

while getting the child node for the second level you were using the code provided below.

IPrivateTreeView.IVn_FolderContentNode folderContentNode1 =folderContentNode.nodeVn_ChildNode();

Here you are using a node to get the child node. In this scenario the leadselected elements childnode will be taken. In your case you were not changing the leadselection and hence the child elements always got added to the second level first element.

The code should look like this

IPrivateTreeView.IVn_FolderContentNode folderContentNode1 =folderContentElement.nodeVn_ChildNode();

I had done the implementation to verify the problem. You can use the code given below or change the line above in your code.

if(firstTime)
{
	IPrivateTreeView.IVn_FolderContentNode rootFolderContentNode =   wdContext.nodeVn_FolderContent();
	IPrivateTreeView.IVn_FolderContentElement rootFolderContentElement;
	for(int i=0;i<wdContext.nodeVn_Roles().size();i++)
	{
		wdContext.nodeVn_Roles().setLeadSelection(i);
		rootFolderContentElement =rootFolderContentNode.createVn_FolderContentElement();
		rootFolderContentElement.setText(wdContext.nodeVn_Roles().getVn_RolesElementAt(i).getVa_RoleDesc());
		rootFolderContentElement.setHasChildren(true);
		rootFolderContentElement.setIgnoreAction(true);
		rootFolderContentElement.setIsExpanded(true);
		rootFolderContentNode.addElement(rootFolderContentElement);
		rootFolderContentNode.setLeadSelection(i);
		IPrivateTreeView.IVn_FolderContentNode folderContentNode = rootFolderContentElement.nodeVn_ChildNode();
		IPrivateTreeView.IVn_FolderContentElement folderContentElement;
		for(int j=0;j<wdContext.nodeVn_Entlmt().size();j++)
		{
			wdContext.nodeVn_Entlmt().setLeadSelection(j);				  
			folderContentElement = folderContentNode.createVn_FolderContentElement();
			folderContentElement.setText(wdContext.nodeVn_Entlmt().getVn_EntlmtElementAt(j).getVa_EntlmtDesc());
			folderContentElement.setHasChildren(true);
			folderContentElement.setIgnoreAction(true);
			folderContentElement.setIsExpanded(true);
			folderContentNode.addElement(folderContentElement);
			IPrivateTreeView.IVn_FolderContentNode folderContentNode1 =folderContentElement.nodeVn_ChildNode();
			IPrivateTreeView.IVn_FolderContentElement folderContentElement1;
			for(int k=0;k<wdContext.nodeVn_Authcode().size();k++)
			{
				folderContentElement1 = folderContentNode1.createVn_FolderContentElement();
				folderContentElement1.setText(wdContext.nodeVn_Authcode().getVn_AuthcodeElementAt(k).getVa_AuthcodeDesc());
				folderContentElement1.setHasChildren(false);
				folderContentElement1.setIgnoreAction(false);
				folderContentElement1.setIsExpanded(false);
				folderContentNode1.addElement(folderContentElement1);
			}
		}
	}
}

Regards,

Sanyev

[Former Member · Accepted solution]

Hi Sanyev,

Yes ur correct this solved my problem. Any idea how I can get the text for the selected child node ie authcode on click of it.

Regards,

Jaspreet Kaur

[sanyev · Accepted solution]

Hi Jaspreet,

If you want to get the selected element in a tree you need to get the tree selection.

IVn_FolderContentElement element = wdContext.nodeVn_FolderContent().getTreeSelection();
String authcode = element.getText();

Regards,

Sanyev

[Former Member · Accepted solution]

Hi Sanyev

I tried tht but element cant be resolved as Type mismatch: cannot convert from IWDNODEELEMENT to IPRIVATETREEVIEW.IVn_FOLDERCONTENTELEMENT.

Thanks & Regards

Jaspreet Kaur

[Former Member · Accepted solution]

Hi,

Following code will resolve this

IWDNodeElement element = wdContext.nodeVn_FolderContent().getTreeSelection();
String authcode = element.getAttributeValue("Text");

Regards

Ayyapparaj

[Former Member · Accepted solution]

Hi Ayyapparaj,

Now its not able to resolve authcode as it cant convert object to string.

Thanks & Regards

Jaspreet

[Former Member · Accepted solution]

Hi

use

String authcode = (String)element.getAttributeValue("Text");

Regards

Ayyapparaj

[Former Member · Accepted solution]

Hi Ayyapparaj

It working fine...Thankyou...But max pts i cud allocate was 6

Thanks & Regards

Jaspreet Kaur Grewal

[Former Member · Accepted solution]

It's better to cast from IWDNodeElement to I<ContextNode>Element and use the typed accessor. Otherwise the code will break when the accessed attribute is renamed.

Armin

[Former Member · Accepted solution]

Hi Ayyapparaj,

Actually one small issue I am facing when i click the child node of one parent the others also open. For ex.

my tree structure is as such: Role->entitlement->authcode

now if 1 instance authcode is clicked the action is processed meanwhile the 4th instance opens up i mean to say expands.

Thanks & Regards

Jaspreet Kaur Grewal

[Former Member]

Context

TreeNode (node, 0:n)
- label (string)
- expandable (boolean)
- hasChildren (boolean)
- Children (recursive node -> TreeNode)

Code:

ITreeNodeElement addChildNode(ITreeNodeElement parent, String label, boolean hasChildren, boolean expandable)
{
  ITreeNodeElement treeNode = parent.nodeChildren().createAndAddTreeNodeElement();
  treeNode.setLabel(label);
  treeNode.setHasChildren(hasChildren);
  treeNode.setExpandable(expandable);
  return treeNode;
}

/* place this into some controller method, but not into wdDoModifyView() */

/* invisible root, set Tree.rootVisible = false */
ITreeNodeElement root = wdContext.nodeTreeNode().createAndAddTreeNodeElement();
root.setHasChildren(true);
root.setExpandable(true);

ITreeNodeElement A = addChildNode(root, "A", true, true);
addChildNode(A, "a1", false, false);
addChildNode(A, "a2", false, false);
ITreeNodeElement B = addChildNode(root, "B", true, true);
addChildNode(B, "b1", false, false);
ITreeNodeElement C = addChildNode(root, "C", true, false);
addChildNode(C, "c1", false, false);

Armin

[Former Member]

Hi,

Why are you loading the whole tree at once? Ideally you should load respective node children when they are expanded through the "onLoadChildren" event. Are you using recursive nodes in your context structure?

Regards,

Satyajit