package polaris.sdk.ui.controls;
import polaris.sdk.ui.*;
import java.time.*;
import java.time.format.*;

/** Time editor composed of three equally spaced, frameless horizontal steppers. */
public class TimePicker extends Button {
 private LocalTime value=LocalTime.of(12,0);
 public TimePicker(){refresh();}
 public TimePicker value(LocalTime time){if(time==null)throw new NullPointerException("time");value=time.withNano(0);refresh();return this;}
 public LocalTime value(){return value;}
 private void refresh(){text=value.format(DateTimeFormatter.ofPattern("HH:mm:ss"))+"  ▾";}
 @Override public void activate(){if(ui!=null)ui.show(new TimeEditor());}
 private final class TimeEditor extends Modal {
  private final Spinner hour=new Spinner(value.getHour()).range(0,23);
  private final Spinner minute=new Spinner(value.getMinute()).range(0,59);
  private final Spinner second=new Spinner(value.getSecond()).range(0,59);
  private final Label[] labels={new CenterLabel("小时"),new CenterLabel("分钟"),new CenterLabel("秒")};
  private final Spinner[] fields={hour,minute,second};
  private final Button apply=new Button("确定").primary(true);
  TimeEditor(){
   super("选择时间");w=404;h=HEADER_HEIGHT+Spacing.GAP+Spacing.LABEL_HEIGHT+Spacing.GAP+40+Spacing.GAP+Spacing.CONTROL_HEIGHT+Spacing.INSET;
   id("timeEditor");hour.id("timeHour");minute.id("timeMinute");second.id("timeSecond");apply.id("timeApply");
   for(int i=0;i<3;i++){add(labels[i]);add(fields[i]);}
   apply.onClick(w->{value(LocalTime.of((int)hour.number(),(int)minute.number(),(int)second.number()));TimePicker.this.changed();close();});add(apply);
  }
  @Override protected void layoutChildren(){
   float inset=Spacing.INSET,gap=Spacing.GAP,cell=Spacing.columnWidth(w,inset,gap,3),top=HEADER_HEIGHT+gap;
   for(int i=0;i<3;i++){
    float x=inset+i*(cell+gap);
    labels[i].bounds(x,top,cell,Spacing.LABEL_HEIGHT);
    fields[i].bounds(x,top+Spacing.LABEL_HEIGHT+gap,cell,40);
   }
   apply.bounds(w-inset-cell,h-inset-Spacing.CONTROL_HEIGHT,cell,Spacing.CONTROL_HEIGHT);
  }
 }
 private static final class CenterLabel extends Label {
  CenterLabel(String text){super(text);size(13);}
  @Override protected void paint(Painter p){p.text(text,ax+(w-p.textWidth(text,size))/2,ay+(h-size)/2,size,theme().muted);}
 }
}