/** Generic lightweight dialog, not based on JFace. */
public class LightweightDialog {
- // private final static Log log = LogFactory.getLog(LightweightDialog.class);
+ // must be the same value as org.eclipse.jface.window.Window#OK
+ public final static int OK = 0;
+ // must be the same value as org.eclipse.jface.window.Window#CANCEL
+ public final static int CANCEL = 1;
private Shell parentShell;
private Shell backgroundShell;
- private Shell shell;
+ private Shell foregoundShell;
+
+ private Integer returnCode = null;
+ private boolean block = true;
+
+ private String title;
/** Tries to find a display */
private static Display getDisplay() {
this.parentShell = parentShell;
}
- public void open() {
- if (shell != null)
+ public int open() {
+ if (foregoundShell != null)
throw new EclipseUiException("There is already a shell");
- backgroundShell = new Shell(parentShell, SWT.NO_TRIM | SWT.BORDER | SWT.ON_TOP);
- backgroundShell.setMaximized(true);
+ backgroundShell = new Shell(parentShell, SWT.DIALOG_TRIM | SWT.ON_TOP);
+ backgroundShell.setFullScreen(true);
+ // backgroundShell.setMaximized(true);
backgroundShell.setAlpha(128);
backgroundShell.setBackground(getDisplay().getSystemColor(SWT.COLOR_BLACK));
backgroundShell.open();
- shell = new Shell(backgroundShell, SWT.NO_TRIM | SWT.BORDER | SWT.ON_TOP);
- shell.setLayout(new GridLayout());
- // shell.setText("Error");
- shell.setSize(getInitialSize());
- createDialogArea(shell);
+ foregoundShell = new Shell(backgroundShell, SWT.NO_TRIM | SWT.ON_TOP);
+ if (title != null)
+ setTitle(title);
+ foregoundShell.setLayout(new GridLayout());
+ foregoundShell.setSize(getInitialSize());
+ createDialogArea(foregoundShell);
// shell.pack();
// shell.layout();
Rectangle shellBounds = Display.getCurrent().getBounds();// RAP
- Point dialogSize = shell.getSize();
+ Point dialogSize = foregoundShell.getSize();
int x = shellBounds.x + (shellBounds.width - dialogSize.x) / 2;
int y = shellBounds.y + (shellBounds.height - dialogSize.y) / 2;
- shell.setLocation(x, y);
+ foregoundShell.setLocation(x, y);
- shell.addShellListener(new ShellAdapter() {
+ foregoundShell.addShellListener(new ShellAdapter() {
private static final long serialVersionUID = -2701270481953688763L;
@Override
public void shellDeactivated(ShellEvent e) {
- closeShell();
+ if (returnCode == null)// not yet closed
+ closeShell(CANCEL);
+ }
+
+ @Override
+ public void shellClosed(ShellEvent e) {
+ notifyClose();
}
+
});
- shell.open();
+ foregoundShell.open();
// after the foreground shell has been opened
backgroundShell.addFocusListener(new FocusListener() {
private static final long serialVersionUID = 3137408447474661070L;
@Override
public void focusGained(FocusEvent event) {
- closeShell();
+ if (returnCode == null)// not yet closed
+ closeShell(CANCEL);
}
});
+
+ if (block) {
+ runEventLoop(foregoundShell);
+ }
+ if (returnCode == null)
+ returnCode = OK;
+ return returnCode;
}
- protected void closeShell() {
- if (shell != null) {
- shell.close();
- shell.dispose();
- shell = null;
+ // public synchronized int openAndWait() {
+ // open();
+ // while (returnCode == null)
+ // try {
+ // wait(100);
+ // } catch (InterruptedException e) {
+ // // silent
+ // }
+ // return returnCode;
+ // }
+
+ private synchronized void notifyClose() {
+ if (returnCode == null)
+ returnCode = CANCEL;
+ notifyAll();
+ }
+
+ protected void closeShell(int returnCode) {
+ this.returnCode = returnCode;
+ if (CANCEL == returnCode)
+ onCancel();
+ if (foregoundShell != null && !foregoundShell.isDisposed()) {
+ foregoundShell.close();
+ foregoundShell.dispose();
+ foregoundShell = null;
}
- if (backgroundShell != null) {
+ if (backgroundShell != null && !backgroundShell.isDisposed()) {
backgroundShell.close();
backgroundShell.dispose();
}
// if (exception != null)
// return new Point(800, 600);
// else
- return new Point(400, 400);
+ return new Point(600, 400);
}
protected Control createDialogArea(Composite parent) {
dialogarea.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
return dialogarea;
}
+
+ protected Shell getBackgroundShell() {
+ return backgroundShell;
+ }
+
+ protected Shell getForegoundShell() {
+ return foregoundShell;
+ }
+
+ public void setBlockOnOpen(boolean shouldBlock) {
+ block = shouldBlock;
+ }
+
+ private void runEventLoop(Shell loopShell) {
+ Display display;
+ if (foregoundShell == null) {
+ display = Display.getCurrent();
+ } else {
+ display = loopShell.getDisplay();
+ }
+
+ while (loopShell != null && !loopShell.isDisposed()) {
+ try {
+ if (!display.readAndDispatch()) {
+ display.sleep();
+ }
+ } catch (Throwable e) {
+ handleException(e);
+ }
+ }
+ if (!display.isDisposed())
+ display.update();
+ }
+
+ protected void handleException(Throwable t) {
+ if (t instanceof ThreadDeath) {
+ // Don't catch ThreadDeath as this is a normal occurrence when
+ // the thread dies
+ throw (ThreadDeath) t;
+ }
+ // Try to keep running.
+ t.printStackTrace();
+ }
+
+ /** @return false, if the dialog should not be closed. */
+ protected boolean onCancel() {
+ return true;
+ }
+
+ public void setTitle(String title) {
+ this.title = title;
+ if (getForegoundShell() != null)
+ getForegoundShell().setText(title);
+ }
+
}
\ No newline at end of file
projects / lgpl / argeo-commons.git / blobdiff