我正在远离MXML并在ActionScript中构建了一个自定义组件控件。
我的控件显示正确。问题出现在我从显示列表中删除它并使用 .addElement(control) 方法重新添加它之后。
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是下面显示的基类comboBoxMultiSelect。在图形上没有什么特别之处ReportControl，它仅用作其具体实现（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;
}
}
当我在 using 中添加控件时vgParameters.addElement(control)，comboBoxMultiSelect无法正确呈现。plusIcon按钮内部最初_btnMultiple没有正确定位，但在大约 0.5-1 秒后迅速自行纠正。
我很确定问题出在 comboBoxMultiSelect 之内，只是不确定如何强制图标留在同一个地方。
经过我所有的辛勤工作，这很烦人，有人知道我做错了什么吗？
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, this, true));
}
public function addSelfToValueObject(valueObject:Object):Object{
valueObject[AmfPHPArgumentName] = _selection;
return valueObject;
}
}