시소당

[SWT] Demonstrates ProgressBar

import  org.eclipse.swt.SWT;
import  org.eclipse.swt.layout.*;
import  org.eclipse.swt.widgets.*;

/**
  *  This  class  demonstrates  ProgressBar
  */
public  class  ProgressBarExample  {
        public  static  void  main(String[]  args)  {
                Display  display  =  new  Display();
                Shell  shell  =  new  Shell(display);
                shell.setLayout(new  GridLayout());

                //  Create  a  smooth  progress  bar
                ProgressBar  pb1  =  new  ProgressBar(shell,  SWT.HORIZONTAL  |  SWT.SMOOTH);
                pb1.setLayoutData(new  GridData(GridData.FILL_HORIZONTAL));
                pb1.setMinimum(0);
                pb1.setMaximum(30);

                //  Create  an  indeterminate  progress  bar
                ProgressBar  pb2  =  new  ProgressBar(shell,  SWT.HORIZONTAL
                                |  SWT.INDETERMINATE);
                pb2.setLayoutData(new  GridData(GridData.FILL_HORIZONTAL));

                //  Start  the  first  progress  bar
                new  LongRunningOperation(display,  pb1).start();

                shell.open();
                while  (!shell.isDisposed())  {
                        if  (!display.readAndDispatch())  {
                                display.sleep();
                        }
                }
        }
}

/**
  *  This  class  simulates  a  long  running  operation
  */
class  LongRunningOperation  extends  Thread  {
        private  Display  display;
        private  ProgressBar  progressBar;

        public  LongRunningOperation(Display  display,  ProgressBar  progressBar)  {
                this.display  =  display;
                this.progressBar  =  progressBar;
        }

        public  void  run()  {
                //  Perform  work  here--this  operation  just  sleeps
                for  (int  i  =  0;  i  <  30;  i++)  {
                        try  {
                                Thread.sleep(1000);
                        }  catch  (InterruptedException  e)  {
                                //  Do  nothing
                        }
                        display.asyncExec(new  Runnable()  {
                                public  void  run()  {
                                        if  (progressBar.isDisposed())
                                                return;

                                        //  Increment  the  progress  bar
                                        progressBar.setSelection(progressBar.getSelection()  +  1);
                                }
                        });
                }
        }
}