/* * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code 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 * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */package sun.swing;import sun.misc.Unsafe;import java.awt.Point;import javax.swing.text.JTextComponent;import javax.swing.TransferHandler;/** * The SwingAccessor utility class. * The main purpose of this class is to enable accessing * private and package-private fields of classes from * different classes/packages. See sun.misc.SharedSecretes * for another example. */public final class SwingAccessor { private static final Unsafe unsafe = Unsafe.getUnsafe(); /** * We don't need any objects of this class. * It's rather a collection of static methods * and interfaces. */ private SwingAccessor() { } /** * An accessor for the JTextComponent class. * Note that we intentionally introduce the JTextComponentAccessor, * and not the JComponentAccessor because the needed methods * aren't override methods. */ public interface JTextComponentAccessor { /** * Calculates a custom drop location for the text component, * representing where a drop at the given point should insert data. */ TransferHandler.DropLocation dropLocationForPoint(JTextComponent textComp, Point p); /** * Called to set or clear the drop location during a DnD operation. */ Object setDropLocation(JTextComponent textComp, TransferHandler.DropLocation location, Object state, boolean forDrop); } /** * The javax.swing.text.JTextComponent class accessor object. */ private static JTextComponentAccessor jtextComponentAccessor; /** * Set an accessor object for the javax.swing.text.JTextComponent class. */ public static void setJTextComponentAccessor(JTextComponentAccessor jtca) { jtextComponentAccessor = jtca; } /** * Retrieve the accessor object for the javax.swing.text.JTextComponent class. */ public static JTextComponentAccessor getJTextComponentAccessor() { if (jtextComponentAccessor == null) { unsafe.ensureClassInitialized(JTextComponent.class); } return jtextComponentAccessor; }}
/*
* Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.swing;
import sun.misc.Unsafe;
import java.awt.Point;
import javax.swing.text.JTextComponent;
import javax.swing.TransferHandler;
/**
* The SwingAccessor utility class.
* The main purpose of this class is to enable accessing
* private and package-private fields of classes from
* different classes/packages. See sun.misc.SharedSecretes
* for another example.
*/
public final class SwingAccessor {
private static final Unsafe unsafe = Unsafe.getUnsafe();
/**
* We don't need any objects of this class.
* It's rather a collection of static methods
* and interfaces.
*/
private SwingAccessor() {
}
/**
* An accessor for the JTextComponent class.
* Note that we intentionally introduce the JTextComponentAccessor,
* and not the JComponentAccessor because the needed methods
* aren't override methods.
*/
public interface JTextComponentAccessor {
/**
* Calculates a custom drop location for the text component,
* representing where a drop at the given point should insert data.
*/
TransferHandler.DropLocation dropLocationForPoint(JTextComponent textComp, Point p);
/**
* Called to set or clear the drop location during a DnD operation.
*/
Object setDropLocation(JTextComponent textComp, TransferHandler.DropLocation location,
Object state, boolean forDrop);
}
/**
* The javax.swing.text.JTextComponent class accessor object.
*/
private static JTextComponentAccessor jtextComponentAccessor;
/**
* Set an accessor object for the javax.swing.text.JTextComponent class.
*/
public static void setJTextComponentAccessor(JTextComponentAccessor jtca) {
jtextComponentAccessor = jtca;
}
/**
* Retrieve the accessor object for the javax.swing.text.JTextComponent class.
*/
public static JTextComponentAccessor getJTextComponentAccessor() {
if (jtextComponentAccessor == null) {
unsafe.ensureClassInitialized(JTextComponent.class);
}
return jtextComponentAccessor;
}
}