sui_listbox_remove_all_item_deadly_slow.jsx

#targetengine "poo"
var u;
var w = new Window('window', "list item destroy", u, {closeButton:true, minimizeButton:true, maximizeButton:false, resizeable:false, borderless:false});
w.orientation = 'column';
w.margins = 5;
w.spacing = 5;
w.alignChildren = ['fill', 'fill'];


var s_panel = w.add('panel');
var l_panel = w.add('panel');


s_panel.add("statictext", u, "StaticText");
var scrollbox = s_panel.add('statictext', [0,0,320,240], 'index, value1, value2', {multiline:true,scrollable:true})

btn_add_scrollbox = s_panel.add('button', u, "add to scrollbox")
btn_remove_scrollbox = s_panel.add('button', u, "remove from scrollbox")

btn_add_scrollbox.onClick = function () {
  var init = ['index, value, value'];
  var s = new Date();
  for (var i = 0; i < 100; i++) {
    init.push([i.toString(), Math.random().toString(), Math.random().toString()].join(", "));
  }
  scrollbox.text = init.join("\n");
  alert((new Date() - s)+"msec");
}
btn_remove_scrollbox.onClick = function () {  
  var s = new Date();
  var init = ['index, value, value'];
  scrollbox.text = init.join("\n");
  alert((new Date() - s)+"msec");
}




l_panel.add("statictext", u, "ListBox/ListItems");
var listbox = l_panel.add('listbox', [0,0,320,240], "", {
  numberOfColumns: 3, 
  showHeaders: true, 
  columnTitles: ["index", "value1", "value2"]
});

btn_add_listitems    = l_panel.add('button', u, "add listitems");
btn_remove_listitems = l_panel.add('button', u, "remove listitems");

btn_add_listitems.onClick = function () {
  var s = new Date();
  for (var i = 0; i < 100; i++) {
    itm = listbox.add('item', i.toString());
    itm.subItems[0].text = Math.random().toString();
    itm.subItems[1].text = Math.random().toString();
  }
  alert((new Date() - s)+"msec");
}
btn_remove_listitems.onClick = function () {  
  var s = new Date();
  listbox.removeAll(); // => DEADLY SLOW
  alert((new Date() - s)+"msec");
}

w.show();