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	/*
	* Copyright (c) 2009, 2014, 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.RepaintManager;

	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);
	}

	/**
	* An accessor for the JLightweightFrame class.
	*/
	public interface JLightweightFrameAccessor {
	/**
	* Notifies the JLightweight frame that it needs to update a cursor
	*/
	void updateCursor(JLightweightFrame frame);
	}

	/**
	* An accessor for the RepaintManager class.
	*/
	public interface RepaintManagerAccessor {
	void addRepaintListener(RepaintManager rm, SwingUtilities2.RepaintListener l);
	void removeRepaintListener(RepaintManager rm, SwingUtilities2.RepaintListener l);
	}

	/**
	* 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;
	}

	/**
	* The JLightweightFrame class accessor object
	*/
	private static JLightweightFrameAccessor jLightweightFrameAccessor;

	/**
	* Set an accessor object for the JLightweightFrame class.
	*/
	public static void setJLightweightFrameAccessor(JLightweightFrameAccessor accessor) {
	jLightweightFrameAccessor = accessor;
	}

	/**
	* Retrieve the accessor object for the JLightweightFrame class
	*/
	public static JLightweightFrameAccessor getJLightweightFrameAccessor() {
	if (jLightweightFrameAccessor == null) {
	unsafe.ensureClassInitialized(JLightweightFrame.class);
	}
	return jLightweightFrameAccessor;
	}

	/**
	* The RepaintManager class accessor object.
	*/
	private static RepaintManagerAccessor repaintManagerAccessor;

	/**
	* Set an accessor object for the RepaintManager class.
	*/
	public static void setRepaintManagerAccessor(RepaintManagerAccessor accessor) {
	repaintManagerAccessor = accessor;
	}

	/**
	* Retrieve the accessor object for the RepaintManager class.
	*/
	public static RepaintManagerAccessor getRepaintManagerAccessor() {
	if (repaintManagerAccessor == null) {
	unsafe.ensureClassInitialized(RepaintManager.class);
	}
	return repaintManagerAccessor;
	}
	}

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