java - javafx: bug when trying to close window properly -
i designing close window functionality desktop application. high level explanation of functionality listed:
- if click exit menuitem, prompts
confirmboxuser confirm whether wants save or not before closing application. - if user click on closebutton on window force close window (i.e. setoncloserequest function), exit menuitem event fire off, brings user case (1) again.
- within
confirmboxcode, have bind enter key save things, n key not save things , escape key close confirmbox. - i have set accelerator exit menuitem (metakey + e).
everything works fine. however, there minor bug if follow special sequence of steps. whenever use accelerator exit menuitem (i.e. metakey + e) and press either 1 of 3 keys(enter, escape, n), confirmbox closes pops again.
i wondering why happening in special case?
public class confirmbox { // answer[0] determines need save // answer[1] determines whether close application or not private static boolean[] answer = new boolean[]{false,false}; private static stage window; public static boolean[] displaywarning(string title, string message){ window = new stage(); window.initmodality(modality.application_modal); window.settitle(title); window.setminwidth(300); label label = new label(); label.settext(message); button yesbutton = new button("yes"); button nobutton = new button("no"); // needtosave = true, close application = true , close confirmbox yesbutton.setonaction(ey ->{ answer[0] = true; answer[1] = true; window.close(); }); // needtosave = false, close application = true , close confirmbox nobutton.setonaction(en -> { answer[0] = false; answer[1] = true; window.close(); }); // needtosave = false, close application = false , close confirmbox window.setoncloserequest(e -> { answer[0] = false; answer[1] = false; closeconfirmbox(); }); // key binding window.addeventhandler(keyevent.key_pressed, e -> { if ( e.getcode() == keycode.n){ nobutton.fire(); e.consume(); } }); // bind enter key yesbutton window.addeventhandler(keyevent.key_pressed, ev -> { if (ev.getcode() == keycode.enter ){ yesbutton.fire(); ev.consume(); } }); window.addeventfilter(keyevent.key_pressed, ev ->{ if(ev.getcode()==keycode.escape){ ev.consume(); answer[0] = false; answer[1] = false; closeconfirmbox(); } }); vbox layout = new vbox(20); layout.setpadding(new insets(20,5,20,5)); hbox bottomlayout = new hbox(50); bottomlayout.setpadding(new insets(20,5,20,5)); bottomlayout.getchildren().addall(yesbutton,nobutton); bottomlayout.setalignment(pos.center); layout.getchildren().addall(label,bottomlayout); layout.setalignment(pos.center); scene scene = new scene(layout); window.setscene(scene); window.showandwait(); return answer; } public static void closeconfirmbox(){ window.close(); } } within controller class, how designed menuitem menuitemexit.
menuitemexit.setonaction(new eventhandler<actionevent>(){ @override public void handle(actionevent e){ //system.out.println("set stage" + primarystage); boolean[] answer; boolean needtosave = false; boolean closeapplication = false; if(saved.get() == false){ answer = confirmbox.displaywarning("warning", "do want save stuff?"); needtosave = answer[0]; closeapplication = answer[1]; } if(needtosave == true){ menuitemsave.fire(); } if(closeapplication== true){ platform.runlater(new runnable() { public void run() { close(); } }); } } }); primarystage.setoncloserequest(e -> { e.consume(); menuitemexit.fire(); }); menuitemexit.setaccelerator(new keycodecombination(keycode.e, keycombination.meta_down)); public void close(){ this.primarystage.close(); }
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