Forked from:: shapevent's Nav Tree Menu

forked from: Nav Tree Menu

forked:0
favorite:2
lines:99
license : MIT License
modified : 2010-10-18 09:38:34

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// forked from shapevent's Nav Tree Menu
package {

import flash.display.*;
        import flash.events.*;
        import flash.text.*;

public class NestedNav extends MovieClip {
        private var menu:XML;
        private var elements:Array;

public function NestedNav(){
                  // init
            menu=<nav>
               <element label="one">
                   <element label="a" />
               <element label="b" />
               <element label="c" />
            </element>
            <element label="two">
                 <element label="three">
                 <element label="aa" > 
                   <element label="zevan" /> 
                 </element>
                 <element label="bb" />
                 <element label="cc" />
             </element>
             </element>
            </nav>;
            
            elements = new Array();
            setupMenu();

}
               // private methods

private function setupMenu():void {
            parse(menu);
            // hide child elements
            for (var i:int = 0; i<elements.length; i++) {
                var mc:MovieClip = elements[i];
                if (mc.parents != 1) {
                    removeChild(mc);
                }
            }
            arrangeY();
        }
        private function parse(m:XML):void {
            for each (var d:XML in m.children()) {
                makeBtn(d, numParents(d));
                parse(d);
            }
        }
        private function makeBtn(d:XML, offsetX:int):void {
            var btn:MovieClip = new MovieClip();
            btn.x = offsetX * 20;
            btn.y = numChildren * 20;
            btn.data = d;
            btn.parents = offsetX;
            btn.value = d.@label;
        
            var txt:TextField = new TextField();
            txt.text = d.@label;
            txt.selectable = false;
            txt.border = true;
            txt.width = 100;
            txt.mouseEnabled = false;
            txt.height = 19;
            btn.addChild(txt);
            btn.buttonMode= true;
            addChild(btn);
            
            // store references to btn
            elements.push(btn);
            elements[d.parent().@label+"_"+d.@label] = btn
        
            btn.addEventListener(MouseEvent.CLICK, onClick);
        }
        private function onClick(evt:MouseEvent):void {
            showHide(MovieClip(evt.currentTarget));
            arrangeY();
            trace(evt.currentTarget.value);
        }
        private function showHide(btn:MovieClip, forceHide:Boolean=false):void {
            for each (var d:XML in btn.data.children()) {
                var mc:MovieClip = elements[btn.data.@label+"_"+d.@label];
                if (contains(mc)) {
                    removeChild(mc);
                    showHide(mc, true);
                } else if (forceHide == false) {
                    addChild(mc);
                }
            }
        }
        private function arrangeY():void {
            var inc:Number = 0;
            for (var i:int = 0; i<elements.length; i++) {
                if (contains(elements[i])) {
                    elements[i].y = inc * 20;
                    inc++;
                }
            }
        }
        private function numParents(e:XML):int {
            var num:int = 0;
            while (e.parent()!= null) {
                num++;
                e = e.parent();
            }
            return num;
        }

}

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