- /*
- * @(#)SynthViewportUI.java 1.8 03/01/23
- *
- * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
- * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
- */
-
- package com.sun.java.swing.plaf.gtk;
-
- import java.awt.*;
- import java.beans.*;
- import javax.swing.*;
- import javax.swing.border.*;
- import javax.swing.plaf.*;
- import java.awt.*;
- import java.awt.event.*;
-
-
- /**
- * BasicViewport implementation
- *
- * @version 1.8, 01/23/03 (based on BasicViewportUI v 1.6)
- */
- class SynthViewportUI extends ViewportUI implements
- PropertyChangeListener, SynthUI {
- private SynthStyle style;
-
- public static ComponentUI createUI(JComponent c) {
- return new SynthViewportUI();
- }
-
- public void installUI(JComponent c) {
- super.installUI(c);
- installDefaults(c);
- installListeners(c);
- }
-
- public void uninstallUI(JComponent c) {
- super.uninstallUI(c);
- uninstallListeners(c);
- uninstallDefaults(c);
- }
-
- protected void installDefaults(JComponent c) {
- fetchStyle(c);
- }
-
- private void fetchStyle(JComponent c) {
- SynthContext context = getContext(c, ENABLED);
-
- // Note: JViewport is special cased as it does not allow for
- // a border to be set. JViewport.setBorder is overriden to throw
- // an IllegalArgumentException.
- SynthStyle newStyle = SynthLookAndFeel.getStyle(context.getComponent(),
- context.getRegion());
- SynthStyle oldStyle = context.getStyle();
-
- if (newStyle != oldStyle) {
- if (oldStyle != null) {
- oldStyle.uninstallDefaults(context);
- }
- context.setStyle(newStyle);
- newStyle.installDefaults(context);
- }
- this.style = newStyle;
- context.dispose();
- }
-
- protected void installListeners(JComponent c) {
- c.addPropertyChangeListener(this);
- }
-
- protected void uninstallListeners(JComponent c) {
- c.removePropertyChangeListener(this);
- }
-
- protected void uninstallDefaults(JComponent c) {
- SynthContext context = getContext(c, ENABLED);
- style.uninstallDefaults(context);
- context.dispose();
- style = null;
- }
-
- public SynthContext getContext(JComponent c) {
- return getContext(c, getComponentState(c));
- }
-
- private SynthContext getContext(JComponent c, int state) {
- return SynthContext.getContext(SynthContext.class, c,
- getRegion(c), style, state);
- }
-
- private Region getRegion(JComponent c) {
- return SynthLookAndFeel.getRegion(c);
- }
-
- private int getComponentState(JComponent c) {
- return SynthLookAndFeel.getComponentState(c);
- }
-
- public void update(Graphics g, JComponent c) {
- SynthContext context = getContext(c);
-
- SynthLookAndFeel.update(context, g);
- paint(context, g);
- context.dispose();
- }
-
- public void paint(Graphics g, JComponent c) {
- SynthContext context = getContext(c);
-
- paint(context, g);
- context.dispose();
- }
-
- protected void paint(SynthContext context, Graphics g) {
- // do actual painting
- }
-
- public void propertyChange(PropertyChangeEvent e) {
- if (SynthLookAndFeel.shouldUpdateStyle(e)) {
- fetchStyle((JComponent)e.getSource());
- }
- }
- }