actionscript 3 - unable to place textinput at the end of the text (i.e at end of last word of text) in flex -

the requirement need textinput beside text(multiline text). did , have taken width of text , adjusted x , y position of textinput, placed beside text
ex: sample text aaaaa <textinput>. if text in multiple lines, textinput should placed @ end of text, not beside text.
ex:
sample textaaaaaaaaaaaaa aaaa bbb <textinput>

but output getting below
sample textaaaaaaaaaaaaa <textinput> aaaa bbb

do have suggestion.

below code memosteplabelbox.as

package { import mx.controls.label; import mx.controls.text; import mx.controls.textinput; import mx.core.container;  public class memosteplabelbox extends container {     public function memosteplabelbox()     {         super();     }      public var textlabel:text;      public var input:textinput;       override protected function createchildren():void     {         super.createchildren();         addchild(textlabel);         if (spacer)         {             addchild(spacer);         }         if (input)         {             addchild(input);          }      }       override protected function updatedisplaylist(unscaledwidth:number, unscaledheight:number):void     {         super.updatedisplaylist(unscaledwidth, unscaledheight);          var labelwidth:number = textlabel.getexplicitormeasuredwidth();         var requiredwidth:number = labelwidth;          if (input)         {             input.setactualsize(input.getexplicitormeasuredwidth(), input.getexplicitormeasuredheight());             requiredwidth += input.width;         }          if (unscaledwidth)         {              textlabel.setactualsize(labelwidth, textlabel.getexplicitormeasuredheight());             textlabel.move(0, (unscaledheight - textlabel.height) / 2);             currentx = textlabel.x + textlabel.width;               if (input)             {             input.move(currentx, (unscaledheight - input.height) / 2);             currentx = input.x + input.width;             }           }     } } } 

main.mxml

<?xml version="1.0"?> <mx:application xmlns:mx="http://www.adobe.com/2006/mxml" xmlns:local="*"  creationcomplete="stack.selectedindex = 0;">       <mx:button label="insert steps" width="100" click="oninsertstepsclick()"/>-->      <local:memosteplabelbox id="hbxhasinput" width="100%">         <local:textlabel>             <mx:text id="txtstep" width="100%"                      text="aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaa"  />         </local:textlabel>         <local:spacer>             <mx:spacer id="hasinputspacer" width="6" themecolor="green" />         </local:spacer>         <local:input>             <mx:textinput id="txtin" width="100" paddingtop="0"                           paddingbottom="0"     />         </local:input>      </local:memosteplabelbox>   </mx:application>