001: /*
002: * Copyright (c) 2001-2007 JGoodies Karsten Lentzsch. All Rights Reserved.
003: *
004: * Redistribution and use in source and binary forms, with or without
005: * modification, are permitted provided that the following conditions are met:
006: *
007: * o Redistributions of source code must retain the above copyright notice,
008: * this list of conditions and the following disclaimer.
009: *
010: * o Redistributions in binary form must reproduce the above copyright notice,
011: * this list of conditions and the following disclaimer in the documentation
012: * and/or other materials provided with the distribution.
013: *
014: * o Neither the name of JGoodies Karsten Lentzsch nor the names of
015: * its contributors may be used to endorse or promote products derived
016: * from this software without specific prior written permission.
017: *
018: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
019: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
020: * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
021: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
022: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
023: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
024: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
025: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
026: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
027: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
028: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029: */
030:
031: package com.jgoodies.looks.plastic;
032:
033: import java.awt.Color;
034: import java.beans.PropertyChangeEvent;
035:
036: import javax.swing.JComponent;
037: import javax.swing.UIManager;
038: import javax.swing.plaf.ComponentUI;
039: import javax.swing.plaf.UIResource;
040: import javax.swing.plaf.basic.BasicTextAreaUI;
041: import javax.swing.text.JTextComponent;
042:
043: /**
044: * The JGoodies Plastic L&F implementation of <code>TextAreaUI</code>.
045: * In addition to its superclass BasicTextAreaUI, it updates the
046: * background colors using behavior from BasicTextFieldUI.
047: *
048: * @author Karsten Lentzsch
049: * @version $Revision: 1.5 $
050: */
051: public final class PlasticTextAreaUI extends BasicTextAreaUI {
052:
053: /**
054: * Creates a UI for a JTextArea.
055: *
056: * @param c the text area
057: * @return the UI
058: */
059: public static ComponentUI createUI(JComponent c) {
060: return new PlasticTextAreaUI();
061: }
062:
063: public void installUI(JComponent c) {
064: super .installUI(c);
065: updateBackground((JTextComponent) c);
066: }
067:
068: /**
069: * This method gets called when a bound property is changed
070: * on the associated JTextComponent. In addition to the superclass
071: * behavior, this UI updates the background if the <em>editable</em> or
072: * <em>enabled</em> property changes .
073: *
074: * @param evt the property change event
075: */
076: protected void propertyChange(PropertyChangeEvent evt) {
077: super .propertyChange(evt);
078: String propertyName = evt.getPropertyName();
079: if ("editable".equals(propertyName)
080: || "enabled".equals(propertyName)) {
081: updateBackground((JTextComponent) evt.getSource());
082: }
083: }
084:
085: private void updateBackground(JTextComponent c) {
086: Color background = c.getBackground();
087: if (!(background instanceof UIResource)) {
088: return;
089: }
090: Color newColor = null;
091: if (!c.isEnabled()) {
092: newColor = UIManager
093: .getColor("TextArea.disabledBackground");
094: }
095: if (newColor == null && !c.isEditable()) {
096: newColor = UIManager
097: .getColor("TextArea.inactiveBackground");
098: }
099: if (newColor == null) {
100: newColor = UIManager.getColor("TextArea.background");
101: }
102: if (newColor != null && newColor != background) {
103: c.setBackground(newColor);
104: }
105: }
106:
107: }
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