ij.gui.NonBlockingGenericDialog Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ij Show documentation
ImageJ is an open source Java image processing program inspired by NIH Image for the Macintosh.
The newest version!
package ij.gui;
import ij.*;
import java.awt.event.*;
import java.awt.EventQueue;
import java.awt.GraphicsEnvironment;
import java.awt.Frame;

/** This is an extension of GenericDialog that is non-modal.
 *	@author Johannes Schindelin
 */
public class NonBlockingGenericDialog extends GenericDialog {
	ImagePlus imp;                  //when non-null, this dialog gets closed when the image is closed
	WindowListener windowListener;  //checking for whether the associated window gets closed

	public NonBlockingGenericDialog(String title) {
		super(title, null);
		setModal(false);
		IJ.protectStatusBar(false);
		instance = this;
	}

	public synchronized void showDialog() {
		super.showDialog();
		if (isMacro())
			return;
		if (!IJ.macroRunning()) {   // add to Window menu on event dispatch thread
			final NonBlockingGenericDialog thisDialog = this;
			EventQueue.invokeLater(new Runnable() {
				public void run() {
					WindowManager.addWindow(thisDialog);
				}
			});
		}
		if (imp != null) {
			ImageWindow win = imp.getWindow();
			if (win != null) {      //when the associated image closes, also close the dialog
				final NonBlockingGenericDialog gd = this;
				windowListener = new WindowAdapter() {
					public void windowClosed(WindowEvent e) {
						cancelDialogAndClose();
					}
				};
				win.addWindowListener(windowListener);
			}
		}
		try {
			wait();
		} catch (InterruptedException e) { }
	}

	/** Gets called if the associated image window is closed */
	private void cancelDialogAndClose() {
		super.windowClosing(null);	// sets wasCanceled=true and does dispose()
	}

	public synchronized void actionPerformed(ActionEvent e) {
		super.actionPerformed(e);
		if (!isVisible())
			notify();
	}

	public synchronized void keyPressed(KeyEvent e) {
		super.keyPressed(e);
		if (wasOKed() || wasCanceled())
			notify();
	}

    public synchronized void windowClosing(WindowEvent e) {
		super.windowClosing(e);
		if (wasOKed() || wasCanceled())
			notify();
    }

	public void dispose() {
		super.dispose();
		WindowManager.removeWindow(this);
		if (imp != null) {
			ImageWindow win = imp.getWindow();
			if (win != null && windowListener != null)
				win.removeWindowListener(windowListener);
		}
	}

	/** Obsolete, replaced by GUI.newNonBlockingDialog(String,ImagePlus). */
	public static GenericDialog newDialog(String title, ImagePlus imp) {
		return GUI.newNonBlockingDialog(title, imp);
	}

	/** Obsolete, replaced by GUI.newNonBlockingDialog(String). */
	public static GenericDialog newDialog(String title) {
		return GUI.newNonBlockingDialog(title);
	}

	/** Put the dialog into the foreground when the image we work on gets into the foreground */
	@Override
	public void windowActivated(WindowEvent e) {
		if ((e.getWindow() instanceof ImageWindow) && e.getOppositeWindow()!=this)
			toFront();
		WindowManager.setWindow(this);
	}

}