CheckboxTree : lvl1 box | lvl2 radio - extjs

Question

All the question is in my title =).
I started with checkBox Tree exemple, add property checked:false for the first level that work i see my checkbox just on left icone folder.
But have radio in level that is so different, i tryed some change to transform checkbox in radio, but nothing *:_:*
Some topic given by broogle talk only some levels with checkbox but none with radio.
Have you an idea ?
Thx a lot, have a nice day.

Answer 1

The Example is using a JSON file to load the nodes.
In de JSON file you can set "checked" to true or false.
{"text": "Grocery List",
"cls": "folder",
"children": [{
"text": "Bananas",
"leaf": true,
"checked": false
},{
"text": "Milk",
"leaf": true,
"checked": false
},{
"text": "Cereal",
"leaf": true,
"checked": false
},{
"text": "Energy foods",
"cls": "folder",
"children": [{
"text": "Coffee",
"leaf": true,
"checked": false
},{
"text": "Red Bull",
"leaf": true,
"checked": false
}]
}]}
You can only have a checkbox in the tree but you can always write your own extension :)

Answer 2

Well, i'm brb on this thread for give a little function. put that on your tree and normaly you have checkbox with radio behavior.
listeners: {
'checkchange': function( n, check )
{
if( check )
{
var p = n.parentNode;
p.eachChild( function( c )
{
if( c.isLeaf() && c.get('checked') )
{
c.set('checked', false);
}
});
n.set('checked', true);
}
else
{
n.set('checked', false);
}
}
}