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package javax.swing.plaf.metal;

import sun.awt.AppContext;

import javax.swing.*;
import javax.swing.plaf.basic.BasicCheckBoxUI;

import java.awt.*;
import java.awt.event.*;
import javax.swing.plaf.*;
import java.io.Serializable;


CheckboxUI implementation for MetalCheckboxUI

Warning: Serialized objects of this class will not be compatible with future Swing releases. The current serialization support is appropriate for short term storage or RMI between applications running the same version of Swing. As of 1.4, support for long term storage of all JavaBeans™ has been added to the java.beans package. Please see XMLEncoder.

Author:Michael C. Albers
/** * CheckboxUI implementation for MetalCheckboxUI * <p> * <strong>Warning:</strong> * Serialized objects of this class will not be compatible with * future Swing releases. The current serialization support is * appropriate for short term storage or RMI between applications running * the same version of Swing. As of 1.4, support for long term storage * of all JavaBeans&trade; * has been added to the <code>java.beans</code> package. * Please see {@link java.beans.XMLEncoder}. * * @author Michael C. Albers * */
@SuppressWarnings("serial") // Same-version serialization only public class MetalCheckBoxUI extends MetalRadioButtonUI { // NOTE: MetalCheckBoxUI inherts from MetalRadioButtonUI instead // of BasicCheckBoxUI because we want to pick up all the // painting changes made in MetalRadioButtonUI. private static final Object METAL_CHECK_BOX_UI_KEY = new Object(); private static final String propertyPrefix = "CheckBox" + "."; private boolean defaults_initialized = false; // ******************************** // Create PlAF // ********************************
Returns an instance of MetalCheckBoxUI.
Params:
  • b – a component
Returns:a new instance of MetalCheckBoxUI
/** * Returns an instance of {@code MetalCheckBoxUI}. * * @param b a component * @return a new instance of {@code MetalCheckBoxUI} */
public static ComponentUI createUI(JComponent b) { AppContext appContext = AppContext.getAppContext(); MetalCheckBoxUI checkboxUI = (MetalCheckBoxUI) appContext.get(METAL_CHECK_BOX_UI_KEY); if (checkboxUI == null) { checkboxUI = new MetalCheckBoxUI(); appContext.put(METAL_CHECK_BOX_UI_KEY, checkboxUI); } return checkboxUI; } public String getPropertyPrefix() { return propertyPrefix; } // ******************************** // Defaults // ******************************** public void installDefaults(AbstractButton b) { super.installDefaults(b); if(!defaults_initialized) { icon = UIManager.getIcon(getPropertyPrefix() + "icon"); defaults_initialized = true; } } protected void uninstallDefaults(AbstractButton b) { super.uninstallDefaults(b); defaults_initialized = false; } }