jdk/src/java.desktop/share/classes/javax/swing/plaf/basic/BasicCheckBoxUI.java
author prr
Sat, 19 Sep 2015 15:45:59 -0700
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8136783: Run blessed-modifier-order script on java.desktop Reviewed-by: martin, serb
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/*
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 * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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package javax.swing.plaf.basic;
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import sun.awt.AppContext;
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import javax.swing.*;
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.plaf.*;
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import java.io.Serializable;
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/**
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 * CheckboxUI implementation for BasicCheckboxUI
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 * <p>
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 * <strong>Warning:</strong>
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 * Serialized objects of this class will not be compatible with
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 * future Swing releases. The current serialization support is
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 * appropriate for short term storage or RMI between applications running
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 * the same version of Swing.  As of 1.4, support for long term storage
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 * of all JavaBeans&trade;
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 * has been added to the <code>java.beans</code> package.
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 * Please see {@link java.beans.XMLEncoder}.
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 *
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 * @author Jeff Dinkins
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 */
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@SuppressWarnings("serial") // Same-version serialization only
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public class BasicCheckBoxUI extends BasicRadioButtonUI {
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    private static final Object BASIC_CHECK_BOX_UI_KEY = new Object();
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    private static final String propertyPrefix = "CheckBox" + ".";
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    // ********************************
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    //            Create PLAF
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    // ********************************
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    /**
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     * Returns an instance of {@code BasicCheckBoxUI}.
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     *
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     * @param b a component
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     * @return an instance of {@code BasicCheckBoxUI}
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     */
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    public static ComponentUI createUI(JComponent b) {
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        AppContext appContext = AppContext.getAppContext();
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        BasicCheckBoxUI checkboxUI =
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                (BasicCheckBoxUI) appContext.get(BASIC_CHECK_BOX_UI_KEY);
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        if (checkboxUI == null) {
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            checkboxUI = new BasicCheckBoxUI();
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            appContext.put(BASIC_CHECK_BOX_UI_KEY, checkboxUI);
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        }
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        return checkboxUI;
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    }
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    public String getPropertyPrefix() {
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        return propertyPrefix;
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    }
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}