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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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