javascript - How to add node to parent node (currently selected node) in gojs? -

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i have written 

function attachlink() { var url = "https://www.google.co.in"; var diagram = mycontextmenu.diagram; var node = new go.node(go.panel.auto); var shape = new go.shape(); shape.figure = "roundedrectangle"; shape.fill = "lightblue"; node.add(shape); var textblock = new go.textblock(); textblock.text = "hello!"; textblock.margin = 5; textblock.cursor = "pointer"; textblock.click = function (e, obj) { window.open(url) }; node.add(textblock); //diagram.add(node); //var diagram = mycontextmenu.diagram; var = diagram.selection.iterator; while (it.next()) {     var part = it.value;     if (part instanceof go.node) {        part.addnodedata(node);     } } diagram.committransaction("color nodes"); }

i having trouble in part of code

 while (it.next()) {     var part = it.value;     if (part instanceof go.node) {        part.addnodedata(node);     } }

i think line of code not appending node selected node

 part.addnodedata(node);

addnodedata function of model in gojs. adding graphobject (in case go.node programmatically built) parent node's visual tree involve calling add on parent node.

parentnode.add(childnode)

this same function used when adding go.shape , go.textblock node programmatically built.

one thing worry approach though you're adding reference same go.node each graphobject in mydiagram.selection. want build go.node want add each element selected in while loop such constructor invoked each time , you're adding distinct go.nodes each selected element rather same one.


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