java - SWT Button Dropdown Control -

is there standard swt control resembles button displays arrow , opens dropdown menu when pressed , not toolbar-only control?

it this:

it similar combo box control, except "button" area act more actual button - text not change based on selection, appear depressed when clicked, , items used actions or navigational purposes instead of selection. it's similar control available toolbars, need use on regular composite instead.

this doable using regular button , popup-menu controls - however, not believe can display arrow next text on button way. anyway, since kind of control seems common, assumed there standard way use these 2 things one.

i think, should drop down menu behavior

1. create menu style swt.drop_down
2. create menuitems on menu

if want button

1. create button style swt.arrow | swt.down
2. add selectionlistener
3. in selectionlistener, create menu style swt.pop_up , position menu @ button location.

//code

public static void main(string[] args) {         display display = new display();         final shell shell = new shell(display);         shell.setsize(300, 200);         shell.settext("button example");         shell.setlayout(new rowlayout());           /**          *           * approach1          *           */         final composite btncntrl = new composite(shell, swt.border);         btncntrl.setbackground(display.getsystemcolor(swt.color_white));         btncntrl.setbackgroundmode(swt.inherit_force);         gridlayoutfactory.filldefaults().numcolumns(2).equalwidth(false).spacing(0, 1).applyto(btncntrl);         clabel lbl = new clabel(btncntrl, swt.none);         lbl.settext("animals");         button btn = new button(btncntrl, swt.flat|swt.arrow|swt.down);         btn.setlayoutdata(new griddata(griddata.fill_vertical));          btn.addselectionlistener(new selectionadapter() {             @override             public void widgetselected(selectionevent e) {                 super.widgetselected(e);                 menu menu = new menu(shell, swt.pop_up);                  menuitem item1 = new menuitem(menu, swt.push);                 item1.settext("hare");                 menuitem item2 = new menuitem(menu, swt.push);                 item2.settext("fox");                 menuitem item3 = new menuitem(menu, swt.push);                 item3.settext("pony");                    point loc = btncntrl.getlocation();                 rectangle rect = btncntrl.getbounds();                  point mloc = new point(loc.x-1, loc.y+rect.height);                  menu.setlocation(shell.getdisplay().map(btncntrl.getparent(), null, mloc));                  menu.setvisible(true);             }         });            /***          *           *           * approach 2          *           */           final composite btncntrl2 = new composite(shell, swt.border);         btncntrl2.setbackground(display.getsystemcolor(swt.color_white));         btncntrl2.setbackgroundmode(swt.inherit_force);         gridlayoutfactory.filldefaults().numcolumns(2).equalwidth(false).spacing(0, 1).applyto(btncntrl2);         clabel lbl2 = new clabel(btncntrl2, swt.none);         lbl2.settext("animals");         button btn2 = new button(btncntrl2, swt.flat|swt.arrow|swt.down);         btn2.setlayoutdata(new griddata(griddata.fill_vertical));          btn2.addselectionlistener(new selectionadapter() {             @override             public void widgetselected(selectionevent e) {                 super.widgetselected(e);                 shell menu = (shell) btncntrl2.getdata("subshell");                 if(menu != null && !menu.isdisposed()){                     menu.dispose();                 }                 menu = new shell(shell, swt.none);                 menu.setlayout(new filllayout());                 table table = new table(menu, swt.full_selection);                 table.addlistener(swt.measureitem, new listener() {                      @override                     public void handleevent(event event) {                         event.height = 20; //todo: determine later                     }                 });                  table.addlistener(swt.paintitem, new listener() {                      @override                     public void handleevent(event event) {                         rectangle bounds = event.getbounds();                         event.gc.setbackground(event.display.getsystemcolor(swt.color_blue));                         event.gc.drawline(bounds.x, bounds.y+bounds.height-1, bounds.x+bounds.width, bounds.y+bounds.height-1);                     }                 });                 tableitem tableitem= new tableitem(table, swt.none);                 tableitem.settext(0, "hare");                  tableitem tableitem2= new tableitem(table, swt.none);                 tableitem2.settext(0, "pony" );                  tableitem tableitem3= new tableitem(table, swt.none);                 tableitem3.settext(0, "dog");                   point loc = btncntrl2.getlocation();                 rectangle rect = btncntrl2.getbounds();                  point mloc = new point(loc.x, loc.y+rect.height);                  menu.setlocation(shell.getdisplay().map(btncntrl2.getparent(), null, mloc));                 menu.pack();                 menu.setvisible(true);                  btncntrl2.setdata("subshell", menu);              }         });          display.addfilter(swt.mousedown, new listener() {              @override             public void handleevent(event event) {                 shell shell = (shell) btncntrl2.getdata("subshell");                 if(shell != null && !shell.getbounds().contains(event.display.map((control)event.widget, null, new point(event.x, event.y)))){                     shell.dispose();                     btncntrl2.setdata("subshell", null);                 }             }         });          shell.open();         while (!shell.isdisposed()) {           if (!display.readanddispatch())             display.sleep();         }         display.dispose();       }