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//Send questions, comments, bug reports, etc. to the authors:
//Rob Warner (rwarner@interspatial.com)
//Robert Harris (rbrt_harris@yahoo.com)
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);
}
});
}
}
}
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