flex – 自定义复合控件在添加回VGROUP后仅在0.5-1秒内无法正确

我正确显示控件.我从显示列表中删除它并使用.addElement(control)方法再次将其添加回来之后出现问题.

这是再次添加它的代码.

private function displayParameters(parameters:ArrayCollection):void{

   for(var index:int = 0; index<parameters.length; index++){

      if(parameters[index] is ReportControl){

          var control:ReportControl = parameters[index] as ReportControl;
          control.percentWidth = 100;
          vgParameters.addElement(control);
      }
   }
}

ReportControl是comboBoxMultiSelect的基类,如下所示. ReportControl没有任何图形特殊的内容,它只是作为其具体实现(多态)的编程接口.

public class comboBoxMultiSelect extends ReportControl{

    [Embed("../Assets/Icons/plus-16.png")]
    private var plusIcon:Class;
    [Embed("../Assets/Icons/minus-16.png")]
    private var minusIcon:Class;

    private var expanded:Boolean = false;
    private var buttonIconChanged:Boolean = false;

    private var _drp:ComboBox;
    private var _btnMultiple:Button;
    private var _horizontalGroup:HGroup;
    private var _multiSelector:ReportGridSelector;

    private var _multiSelection:Boolean = true;
    private var bMultiSelectionChanged:Boolean = false;        

    public function ToggleExpanded():void{
        expanded = !_expanded;
        buttonIconChanged = true;

        invalidateSize();
        invalidateProperties();
        invalidateDisplayList();
    }

    public function comboBoxMultiSelect(){
        super();
    }

    override protected function createChildren():void{

        super.createChildren();            

        if(!_horizontalGroup){
            _horizontalGroup = new HGroup();
            _horizontalGroup.gap = 0;
            _horizontalGroup.percentWidth = 100;
            _horizontalGroup.height = ReportControl.SIZE_DEFAULT_HEIGHT;
             addChild(_horizontalGroup);
        }

        if(!_drp){
            _drp = new ComboBox();
            _drp.text = GuiText;
            _drp.percentWidth = 100;
            _drp.height = ReportControl.SIZE_DEFAULT_HEIGHT; 
            _horizontalGroup.addElement(_drp);
        }

        if(!_btnMultiple && _multiSelection){
            _btnMultiple = new Button;
            _btnMultiple.setStyle("icon",plusIcon);
            _btnMultiple.width = 20;
            _btnMultiple.height = ReportControl.SIZE_DEFAULT_HEIGHT;
            _btnMultiple.visible = true;
            _btnMultiple.addEventListener(MouseEvent.CLICK,function(event:MouseEvent):void{
                                 ToggleExpanded();   
                         });
            _horizontalGroup.addElement(_btnMultiple);
        }
    }

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

        if(buttonIconChanged){

            if(_expanded==true){
                _btnMultiple.setStyle("icon",minusIcon);
            }
            else{
                _btnMultiple.setStyle("icon",plusIcon);
            }
            buttonIconChanged = false;
        }

    }

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

        super.updateDisplayList(unscaledWidth,unscaledHeight);

        _horizontalGroup.width = unscaledWidth;
        _horizontalGroup.height = unscaledHeight;
    }

    override protected function measure():void{

        super.measure();
        measuredMinWidth = measuredWidth = ReportControl.SIZE_DEFAULT_WIDTH;

        //minimum size      //default size
        if(_expanded==true)
            measuredMinHeight= measuredHeight = 200;            
        else
            measuredMinHeight= measuredHeight = 
                               ReportControl.SIZE_DEFAULT_HEIGHT;
    }
}

当我使用vgParameters.addElement(control)添加控件时,comboBoxMultiSelect无法正确呈现.按钮_btnMultiple内的plusIcon最初没有正确定位,但随后在0.5-1秒之后快速纠正.

我很确定问题出在comboBoxMultiSelect中,只是不确定如何强制图标保持在同一个地方.

在我辛勤工作之后,这是非常烦人的,任何人都有关于我做错了什么的想法？

谢谢 ：)

更新—–>这是ReportControl代码

[Event (name= "controlChanged",type="Reporting.ReportControls.ReportControlEvent")]
[Event (name= "controlIsNowValid",type="Reporting.ReportControls.ReportControlEvent")]
public class ReportControl extends UIComponent
{
    private var _guiText:String;
    private var _amfPHPArgumentName:String;
    private var _reportResult:ReportResult;
    private var _sequence:int;
    private var _reportId:int;
    private var _controlConfiguration:ReportParameterVO;
    private var _isValid:Boolean = false;
    internal var _selection:Object;

    /**
     * SIZE_DEFAULT_HEIGHT = 22
     */
    internal static const SIZE_DEFAULT_HEIGHT:int = 22;

    /**
     * SIZE_DEFAULT_WIDTH = 150
     */
    internal static const SIZE_DEFAULT_WIDTH:int = 150;

    public function get ControlConfiguration():ReportParameterVO{
        return _controlConfiguration;
    }

    public function set ControlConfiguration(value:ReportParameterVO):void{

        _controlConfiguration = value;            
        _guiText = (value ? value.GuiText:"");
        _amfPHPArgumentName = (value ? value.AMFPHP_ArgumentName: "");
        _sequence = (value ? value.Sequence : null);
        _reportId = (value ? value.ReportId : null);            
    }

    public function get IsValid():Boolean{
        return _isValid;
    }

    public function get ReportID():int{
        return _reportId;
    }

    public function get Sequence():int{
        return _sequence;
    }

    public function get ControlRepResult():ReportResult{
        return _reportResult;
    }
    public function set ControlRepResult(value:ReportResult):void{
        _reportResult = value;
    }

    internal function set Selection(value:Object):void{
        _selection = value;
    }

    internal function get Selection():Object{
        return _selection;
    }

    public function get ParameterSelection():Object{
        return _selection;
    }

    public function get GuiText():String{
        return _guiText;
    }

    public function get AmfPHPArgumentName():String{
        return _amfPHPArgumentName;
    }

    public function ReportControl(){
        //TODO: implement function
        super();
    }

    public function dispatchControlChanged():void{
        this.dispatchEvent(new ReportControlEvent(ReportControlEvent.CONTROL_CHANGED,this,true));
    }
    public function dispatchControlIsNowValid():void{
        this.dispatchEvent(new ReportControlEvent(ReportControlEvent.CONTROL_IS_NOW_VALID,true));
    }

    public function addSelfToValueObject(valueObject:Object):Object{
        valueObject[AmfPHPArgumentName] = _selection;
        return valueObject;
    }

}