IMenuBarItemRenderer

来源：互联网发布：4y4淘宝店铺装修网站编辑：程序博客网时间：2024/05/08 17:59

package
{

import mx.controls.Image;
import mx.controls.menuClasses.MenuBarItem;

public class MyMenuBarItem extends MenuBarItem
{
    private var image:Image;

    public function MyMenuBarItem()
    {
    }

    override protected function commitProperties():void
    {
        super.commitProperties();

        if (data)
        {
            // <item label="Three" icon="assets/accessories-text-editor.png"/>
            var icon:String = data.@icon;
            image = new Image();
            image.source = icon;
            addChild(image);
        }
    }

    override protected function measure():void
    {
        super.measure();

        if (image)
        {
            measuredWidth += image.measuredWidth + 2;
            measuredHeight = Math.max(image.measuredHeight, measuredHeight);
        }
    }

    override protected function updateDisplayList(unscaledWidth:Number,
                                                  unscaledHeight:Number):void
    {
        super.updateDisplayList(unscaledWidth, unscaledHeight);

        if (image)
        {
            image.x = (20 - image.measuredWidth) / 2;
            image.setActualSize(image.measuredWidth, image.measuredHeight);
            label.x = 20;
        }
    }
}
}

Note that the label and it's associated text is taken car of in the super class.

And in the Application;

<mx:MenuBar id="menuBar"
                labelField="@label"
                iconField="@icon"
                showRoot="false"
                menuBarItemRenderer="MyMenuBarItem"
                dataProvider="{dp}"/>

// extends MenuBar class in order to gain access to menuBarItems and

adjust their label x values

// also extended to apply menu ItemRenderer

public class ExtendedMenuBar extends MenuBar

{

public function ExtendedMenuBar()

{

super();

}

override public function getMenuAt(index:int):Menu

{

var menu:Menu = super.getMenuAt(index);

menu.itemRenderer = new

ClassFactory(renderer.ExtendedMenuItemRenderer);

return menu;

}

package com.istmanagement.vo
{
    import mx.controls.*;
    import mx.controls.Menu;
    import mx.controls.MenuBar;
    import mx.core.ClassFactory;

    public class ExtendedMenuBar extends   MenuBar
            {
        public function ExtendedMenuBar()

        {
                    super();

        }
        override public function getMenuAt(index:int):Menu

        {               var menu:Menu = super.getMenuAt(index);
                      menu.itemRenderer = new ClassFactory(MyMenuBarItem);
                      return menu;

        }

}
}

MyMenuBarItem.as file

package com.istmanagement.vo
{

    import mx.controls.Image;
    import mx.controls.Text;
    import mx.controls.menuClasses.MenuBarItem;

    public class MyMenuBarItem extends MenuBarItem
    {
        private var image:Image;
        private var text:Text;

        public function MyMenuBarItem()
        {
        }

        override protected function commitProperties():void
        {
            super.commitProperties();

            if (data)
            {

                var icon:String = data.menuIcon;
                image = new Image();
                image.source = icon;
                addChild(image);

            }
        }

        override protected function measure():void
        {
            super.measure();

            if (image)
            {
                measuredWidth += image.measuredWidth +2;
                measuredHeight = Math.max(image.measuredHeight, measuredHeight);
            }
        }

        override protected function updateDisplayList(unscaledWidth:Number,
                                                      unscaledHeight:Number):void
        {
            super.updateDisplayList(unscaledWidth, unscaledHeight);

            if (image)
            {
                image.x = (20 - image.measuredWidth) / 2;
                image.setActualSize(image.measuredWidth, image.measuredHeight);
                label.x = 20;
            }
        }
    }
}

Error ll be displayed

cannot convert to mx.controls.menuClasses.IMenuBarItemRenderer.

ExtendedMenuBar.as

package com.vo
{

    import mx.controls.*;
    import mx.controls.Menu;
    import mx.controls.MenuBar;
    import mx.controls.menuClasses.MenuBarItem;
    import mx.controls.menuClasses.MenuItemRenderer;
    import mx.core.ClassFactory;

    public class ExtendedMenuBar extends MenuBar

    {
public function ExtendedMenuBar()

        {
           super();
               }

        override public function getMenuAt(index:int):Menu

        {

            var menu:Menu = super.getMenuAt(index);
             menu.itemRenderer = new ClassFactory(MyMenuBArItem);
          6        return menu;

        }

}
}

MyMenuBArItem.as

package com.vo
{

    import mx.collections.ArrayCollection;
    import mx.controls.Image;
    import mx.controls.Menu;
    import mx.controls.MenuBar;
     import mx.controls.menuClasses.MenuBarItem;
    import mx.controls.menuClasses.MenuItemRenderer;
    import mx.rpc.events.ResultEvent;

    public class MyMenuBArItem extends MenuItemRenderer
    {
        private var image:Image;
        private var imgtest:Image;
        private var text:Text;

        public function MyMenuBArItem()
        {
           }

        override protected function commitProperties():void
        {
            super.commitProperties();


            var icon:String = data.menuIcon;
            image = new Image();
            image.source = icon;
            addChild(image);

            var str:ArrayCollection= data.children;
            menuImage(str);


        }

        public function menuImage(str:ArrayCollection):void
        {
            var str:ArrayCollection= data.children;
            if(str == null)
            {

            }
            else
            {
                var j:int;
                var i:int=0;
                for(; i<str.length ; i++)
                {
                    var test:ArrayCollection=str[i].children;
                    for(j=0;j<test.length;j++)
                    {
                        var menuicon:String =   test[j].menuIcon ;
                        imgtest= new Image();
                        imgtest.source= menuicon;
                        addChild(imgtest);

                    }
                }
            }

        }

        override protected function measure():void
        {
            super.measure();

            if (image)
            {
                measuredWidth += image.measuredWidth +2;
                measuredHeight = Math.max(image.measuredHeight, measuredHeight);
            }
        }

        override protected function updateDisplayList(unscaledWidth:Number,
                                                      unscaledHeight:Number):void
        {
            super.updateDisplayList(unscaledWidth, unscaledHeight);

            if (image)
            {
                image.x = (20 - image.measuredWidth) / 2;
                image.setActualSize(image.measuredWidth, image.measuredHeight);
                label.x = 20;
            }
        }
    }
}

It works for top menu but not working for submenu.