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	/*
	* Copyright (c) 2002, 2013, 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 javax.swing.plaf.synth;

	import javax.swing.*;
	import javax.swing.text.*;
	import javax.swing.plaf.*;
	import javax.swing.plaf.basic.BasicTextAreaUI;
	import java.awt.*;
	import java.awt.event.FocusListener;
	import java.awt.event.FocusEvent;
	import java.beans.PropertyChangeEvent;

	/**
	* Provides the look and feel for a plain text editor in the
	* Synth look and feel. In this implementation the default UI
	* is extended to act as a simple view factory.
	* <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™
	* has been added to the <code>java.beans</code> package.
	* Please see {@link java.beans.XMLEncoder}.
	*
	* @author Shannon Hickey
	* @since 1.7
	*/
	public class SynthTextAreaUI extends BasicTextAreaUI implements SynthUI {
	private Handler handler = new Handler();
	private SynthStyle style;

	/**
	* Creates a UI object for a JTextArea.
	*
	* @param ta a text area
	* @return the UI object
	*/
	public static ComponentUI createUI(JComponent ta) {
	return new SynthTextAreaUI();
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	protected void installDefaults() {
	// Installs the text cursor on the component
	super.installDefaults();
	updateStyle(getComponent());
	getComponent().addFocusListener(handler);
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	protected void uninstallDefaults() {
	SynthContext context = getContext(getComponent(), ENABLED);

	getComponent().putClientProperty("caretAspectRatio", null);
	getComponent().removeFocusListener(handler);

	style.uninstallDefaults(context);
	context.dispose();
	style = null;
	super.uninstallDefaults();
	}

	private void updateStyle(JTextComponent comp) {
	SynthContext context = getContext(comp, ENABLED);
	SynthStyle oldStyle = style;

	style = SynthLookAndFeel.updateStyle(context, this);

	if (style != oldStyle) {
	SynthTextFieldUI.updateStyle(comp, context, getPropertyPrefix());

	if (oldStyle != null) {
	uninstallKeyboardActions();
	installKeyboardActions();
	}
	}
	context.dispose();
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public SynthContext getContext(JComponent c) {
	return getContext(c, SynthLookAndFeel.getComponentState(c));
	}

	private SynthContext getContext(JComponent c, int state) {
	return SynthContext.getContext(c, style, state);
	}

	/**
	* Notifies this UI delegate to repaint the specified component.
	* This method paints the component background, then calls
	* the {@link #paint(SynthContext,Graphics)} method.
	*
	* <p>In general, this method does not need to be overridden by subclasses.
	* All Look and Feel rendering code should reside in the {@code paint} method.
	*
	* @param g the {@code Graphics} object used for painting
	* @param c the component being painted
	* @see #paint(SynthContext,Graphics)
	*/
	@Override
	public void update(Graphics g, JComponent c) {
	SynthContext context = getContext(c);

	SynthLookAndFeel.update(context, g);
	context.getPainter().paintTextAreaBackground(context,
	g, 0, 0, c.getWidth(), c.getHeight());
	paint(context, g);
	context.dispose();
	}

	/**
	* Paints the specified component.
	*
	* @param context context for the component being painted
	* @param g the {@code Graphics} object used for painting
	* @see #update(Graphics,JComponent)
	*/
	protected void paint(SynthContext context, Graphics g) {
	super.paint(g, getComponent());
	}

	/**
	* {@inheritDoc}
	*
	* Overridden to do nothing.
	*/
	@Override
	protected void paintBackground(Graphics g) {
	// Overriden to do nothing, all our painting is done from update/paint.
	}

	/**
	* {@inheritDoc}
	*/
	@Override
	public void paintBorder(SynthContext context, Graphics g, int x,
	int y, int w, int h) {
	context.getPainter().paintTextAreaBorder(context, g, x, y, w, h);
	}

	/**
	* This method gets called when a bound property is changed
	* on the associated JTextComponent. This is a hook
	* which UI implementations may change to reflect how the
	* UI displays bound properties of JTextComponent subclasses.
	* This is implemented to rebuild the View when the
	* <em>WrapLine</em> or the <em>WrapStyleWord</em> property changes.
	*
	* @param evt the property change event
	*/
	@Override
	protected void propertyChange(PropertyChangeEvent evt) {
	if (SynthLookAndFeel.shouldUpdateStyle(evt)) {
	updateStyle((JTextComponent)evt.getSource());
	}
	super.propertyChange(evt);
	}

	private final class Handler implements FocusListener {
	public void focusGained(FocusEvent e) {
	getComponent().repaint();
	}

	public void focusLost(FocusEvent e) {
	getComponent().repaint();
	}
	}
	}

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