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TreeView ContextMenu. Get TreeNode value on TreeView while click ContextMenu

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141939 Jan 11,2019 08:48 AM UTC Jan 14,2019 01:25 PM UTC Angular - EJ 2 1
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Tags: Treeview
Tin
Asked On January 11, 2019 08:48 AM UTC

Hi,

I am using ContextMenu component on my TreeView component, I want to add child for node using ContextMenu, I don't now how I can get the current id of  node on TreeView while I right click to add a child for it's node.

I using TreeView for Angular 7x

I try:

HTML:
<ejs-treeview id="treeMaterial" #treeMaterial [fields]="treeFields" [allowDragAndDrop]="true" (nodeExpanding)="nodeExpanding($event)" [loadOnDemand]="true"</ejs-treeview>

<ejs-contextmenu id='contextmenu' #contextmenu target='#treeMaterial' (beforeOpen)='beforeOpen($event)' [items]='menuItems'></ejs-contextmenu>`

TS:
I using beforeOpen
public beforeOpen(args: BeforeOpenCloseMenuEventArgs) {

        var node = $(args.event.target).closest("e-list-item e-level-3 e-active e-node-focus");

        ////???
    }


Thank so much !!!

Christopher Issac Sunder K [Syncfusion]
Replied On January 14, 2019 01:25 PM UTC

Hi Tin, 

Thank you for contacting Syncfusion support. 

In our TreeView component, we have selectedNodes property which stores the id of the selected tree nodes. You can use this property in the contextMenu beforeOpen event, to get the id of the tree node which was clicked using the below code, 
  
[HTML] 
<ejs-treeview id="treeMaterial" #treeMaterial [fields]="treeFields" [allowDragAndDrop]="true" (nodeExpanding)="nodeExpanding($event)" [loadOnDemand]="true"</ejs-treeview> 
<ejs-contextmenu id='contextmenu' #contextmenu target='#treeMaterial' (beforeOpen)='beforeOpen($event)' [items]='menuItems'></ejs-contextmenu> 
  
[TS] 
@ViewChild ('treeMaterial') treeView: TreeViewComponent; 
public beforeOpen(args: BeforeOpenCloseMenuEventArgs) { 
let treeId: string = this.treeView.selectedNodes[0]; 
} 
We have prepared a sample for your reference.  

We have documented on how to add, remove and rename nodes using contextMenu in TreeView in our help site - https://ej2.syncfusion.com/angular/documentation/treeview/how-to/process-the-tree-node-operations-using-context-menu/ .  

Let us know if you have any more concerns. 

Thanks, 
Christo 


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