Java tutorial
/* * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* * PropertyDialog.java * Copyright (C) 1999-2012 University of Waikato, Hamilton, New Zealand * */ package weka.gui; import java.awt.BorderLayout; import java.awt.Component; import java.awt.Container; import java.awt.Dialog; import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.beans.PropertyEditor; import javax.swing.JDialog; import javax.swing.JInternalFrame; /** * Support for PropertyEditors with custom editors: puts the editor into * a separate frame. * * @author Len Trigg (trigg@cs.waikato.ac.nz) * @version $Revision$ */ public class PropertyDialog extends JDialog { /** for serialization. */ private static final long serialVersionUID = -2314850859392433539L; /** The property editor. */ private PropertyEditor m_Editor; /** The custom editor component. */ private Component m_EditorComponent; /** * Creates the editor frame - only kept for backward-compatibility. * * @param pe the PropertyEditor * @param x initial x coord for the frame * @param y initial y coord for the frame * @deprecated instead of this constructor, one should use the constructors * with an explicit owner (either derived from * <code>java.awt.Dialog</code> or from * <code>java.awt.Frame</code>) or, if none available, * using <code>(Frame) null</code> as owner. */ public PropertyDialog(PropertyEditor pe, int x, int y) { this((Frame) null, pe, x, y); setVisible(true); } /** * Creates the (screen-centered) editor dialog. The dialog is automatically * modal in case the owner is non-null. * * @param owner the dialog that opens this dialog * @param pe the PropertyEditor */ public PropertyDialog(Dialog owner, PropertyEditor pe) { this(owner, pe, -1, -1); } /** * Creates the editor dialog at the given position. The dialog is automatically * modal in case the owner is non-null. * * @param owner the dialog that opens this dialog * @param pe the PropertyEditor * @param x initial x coord for the dialog * @param y initial y coord for the dialog */ public PropertyDialog(Dialog owner, PropertyEditor pe, int x, int y) { super(owner, pe.getClass().getName(), ModalityType.DOCUMENT_MODAL); initialize(pe, x, y); } /** * Creates the (screen-centered) editor dialog. The dialog is automatically * modal in case the owner is non-null. * * @param owner the frame that opens this dialog * @param pe the PropertyEditor */ public PropertyDialog(Frame owner, PropertyEditor pe) { this(owner, pe, -1, -1); } /** * Creates the editor dialog at the given position. The dialog is automatically * modal in case the owner is non-null. * * @param owner the frame that opens this dialog * @param pe the PropertyEditor * @param x initial x coord for the dialog * @param y initial y coord for the dialog */ public PropertyDialog(Frame owner, PropertyEditor pe, int x, int y) { super(owner, pe.getClass().getName(), ModalityType.DOCUMENT_MODAL); initialize(pe, x, y); } /** * We need to extend the dispose method so that the member variables are set to null and * the corresponding objects can be garbage collected. */ @Override public void dispose() { m_Editor = null; m_EditorComponent = null; super.dispose(); } /** * Initializes the dialog. * * @param pe the PropertyEditor * @param x initial x coord for the dialog * @param y initial y coord for the dialog */ protected void initialize(PropertyEditor pe, int x, int y) { addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { e.getWindow().dispose(); } }); getContentPane().setLayout(new BorderLayout()); m_Editor = pe; m_EditorComponent = pe.getCustomEditor(); getContentPane().add(m_EditorComponent, BorderLayout.CENTER); pack(); int screenWidth = getGraphicsConfiguration().getBounds().width; int screenHeight = getGraphicsConfiguration().getBounds().height; // adjust height to a maximum of 95% of screen height if (getHeight() > (double) screenHeight * 0.95) setSize(getWidth(), (int) ((double) screenHeight * 0.95)); if ((x == -1) && (y == -1)) { setLocationRelativeTo(getOwner()); } else { // adjust position if necessary if (x + getWidth() > screenWidth) x = screenWidth - getWidth(); if (y + getHeight() > screenHeight) y = screenHeight - getHeight(); setLocation(x, y); } } /** * Gets the current property editor. * * @return a value of type 'PropertyEditor' */ public PropertyEditor getEditor() { return m_Editor; } /** * Tries to determine the frame this panel is part of. * * @param c the container to start with * @return the parent frame if one exists or null if not */ public static Frame getParentFrame(Container c) { Frame result; Container parent; result = null; parent = c; while (parent != null) { if (parent instanceof Frame) { result = (Frame) parent; break; } else { parent = parent.getParent(); } } return result; } /** * Tries to determine the internal frame this panel is part of. * * @param c the container to start with * @return the parent internal frame if one exists or null if not */ public static JInternalFrame getParentInternalFrame(Container c) { JInternalFrame result; Container parent; result = null; parent = c; while (parent != null) { if (parent instanceof JInternalFrame) { result = (JInternalFrame) parent; break; } else { parent = parent.getParent(); } } return result; } /** * Tries to determine the dialog this panel is part of. * * @param c the container to start with * @return the parent dialog if one exists or null if not */ public static Dialog getParentDialog(Container c) { Dialog result; Container parent; result = null; parent = c; while (parent != null) { if (parent instanceof Dialog) { result = (Dialog) parent; break; } else { parent = parent.getParent(); } } return result; } }