Under the same hbox of JavaFX, drag the left button on the drop-down bar to bounce?

great gods, I now have a button column like this,

Then there will be a drop-down bar on the right side of the data:

But now is pulling the right pull bar, the left button will be disorderly beat out,

And then the reason for this is because each pull down the drop bar will call a UpdateItem () method, how to let this drop bar drag

only callback once this UpdateItem () method ? Or is there any other way to improve the bug? Urgently seeking!!!!!!!

Some of the code is as follows:

public class Allroomoperatebuttontablecell<s, t> extends Tablecell<s, t> {


Private final HBox Mhbox;
Private final Button mviewbn;
Private final Button mviewpicbn;
Private observablevalue<t> ov;
Private final observablelist<roomoperaterecordinfo> mtranslist;
Private Roomoperaterecordinfo Mtransinfo;
Private final TableView Mtableview;


Public Allroomoperatebuttontablecell (observablelist<roomoperaterecordinfo> Translist,tableview TableView) {
This.mtranslist = translist;
This.mtransinfo = null;
This.mtableview = TableView;
This.mhbox = new HBox ();
This.mHbox.setSpacing (5);
This.mHbox.setAlignment (Pos.center);

THIS.MVIEWBN = Buttonbuilder.create ()
. Text ("View")
. Prefwidth (60)
. Prefheight (30)
. build ();
This.mViewBn.setOnAction (New eventhandler<actionevent> () {
@Override
public void handle (ActionEvent event) {
Synchronized (mtranslist) {
Mtableview.getselectionmodel (). Select (GetIndex ());
Mtransinfo = Mtranslist.get (GetIndex ());
if (mtransinfo.getstatus () = = Check_trans_done + Ten | | mtransinfo.getstatus () = = check_trans_cancelled + | | mTransInfo. GetStatus () = = check_trans_systemcancelled + 10) {
Checkingroomtransinfo checkinfo = new Checkingroomtransinfo (Mtransinfo.gettransid (), Mtransinfo.getsubmittime (), Mtransinfo.getroomno (), Mtransinfo.getcreatedbyeno (), Mtransinfo.getreadflag (), Mtransinfo.getstatus (), Mtransinfo.getprocesstime (), mtransinfo.getcomments (), Mtransinfo.getprocesseno ());
for (int i=0;i<mtransinfo.getmminibarinfoslist (). Size (); i++) {
Checkinfo.addmminibarinfoslist (Mtransinfo.getmminibarinfoslist (). get (i));
}
Showchecktransdetail (checkinfo, NULL);
}else if (mtransinfo.getstatus () = = Clean_trans_unhandled | | mtransinfo.getstatus () = = Clean_trans_uninspected | | Mtransinfo.getstatus () = = Clean_trans_inspected | | Mtransinfo.getstatus () = = Clean_trans_unpassed | | Mtransinfo.getstatus () = = Clean_trans_delayed | | Mtransinfo.getstatus () = = Clean_trans_cancelled | | Mtransinfo.getstatus () = = Clean_trans_timeout) {
Cleantransinfo cleaninfo = new Cleantransinfo (Mtransinfo.gettransid (), Mtransinfo.getsubmittime (), Mtransinfo.getroomno (), Mtransinfo.getcreatedbyeno (), Mtransinfo.getreadflag (), Mtransinfo.getstatus (), 2, Mtransinfo.getprocesstime (), mtransinfo.getcomments (), Mtransinfo.getprocesseno ());
Showcleantransdetail (cleaninfo, NULL);
}


Mtableview.requestfocus ();
}
}
});

THIS.MVIEWPICBN = Buttonbuilder.create ()
. text ("See figure")
. Prefwidth (60)
. Prefheight (30)
. build ();
This.mViewPicBn.setOnAction (New eventhandler<actionevent> () {
@Override
public void handle (ActionEvent event) {
Mtableview.getselectionmodel (). Select (GetIndex ());
Mtransinfo = Mtranslist.get (GetIndex ());
Showrelatedpicdetail (Null,mtransinfo);
Mtableview.requestfocus ();
}
});


Mhbox.getchildren (). AddAll (MVIEWBN);
Setalignment (Pos.center);
Setgraphic (Mhbox);
}

@Override
public void UpdateItem (T item, Boolean empty) {

Super.updateitem (item, empty);
if (empty) {
SetText (NULL);
Setgraphic (NULL);
} else {
Setgraphic (Mhbox);

ov = Gettablecolumn (). Getcellobservablevalue (GetIndex ());

if (ov instanceof integerproperty) {
int status = ((Integerproperty) ov). get ();
if (status = = Check_trans_done + Ten | | | status = check_trans_cancelled + | | status = = check_trans_systemcancelled + 10
|| Status = = Clean_trans_inspected | | Status = = Clean_trans_cancelled | | Status = = Clean_trans_timeout) {
Mviewbn.settext ("View");
Mviewbn.setstyle ("-fx-base:olivedrab;");
}else if (status = = Check_status_checkout | | status = = check_trans_unhandled + | | status = = check_trans_done + 100 | | Status = = check_trans_cancelled + 100
|| Status = = check_trans_systemcancelled + 100 | | Status = = Clean_status_create | | Status = =-clean_trans_uninspected | | Status = =-clean_trans_inspected
|| Status ==-clean_trans_unpassed | |  Status ==-clean_trans_delayed | | Status = =-clean_trans_cancelled | | Status = =-clean_trans_timeout | | Status = = Notify_log) {
Setgraphic (NULL);
Return
} else {
Mviewbn.settext ("Processing");
Mviewbn.setstyle ("-fx-base:orange;");
}
}


if (mtransinfo = = null) {
Mtransinfo = Mtranslist.get (GetIndex ());
if (mtransinfo.ischecking () = null && mtransinfo.ischecking ()! = "" && mtransinfo.getrelatedpiclist (). Size () > 0) {
Mhbox.getchildren (). Add (0,MVIEWPICBN);
}
}
}
}
}

Under the same hbox of JavaFX, drag the left button on the drop-down bar to bounce?