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/*
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* Copyright 2002-2003 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package javax.swing.plaf.synth;
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import javax.swing.*;
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import javax.swing.event.*;
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import javax.swing.border.*;
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import javax.swing.plaf.*;
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import javax.swing.plaf.basic.*;
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import java.beans.PropertyChangeListener;
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import java.beans.PropertyChangeEvent;
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import java.awt.*;
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import java.awt.event.*;
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import sun.swing.plaf.synth.SynthUI;
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/**
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* Synth's ScrollPaneUI.
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*
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* @author Scott Violet
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*/
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class SynthScrollPaneUI extends BasicScrollPaneUI implements
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PropertyChangeListener, SynthUI {
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private SynthStyle style;
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public static ComponentUI createUI(JComponent x) {
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return new SynthScrollPaneUI();
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}
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public void update(Graphics g, JComponent c) {
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SynthContext context = getContext(c);
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SynthLookAndFeel.update(context, g);
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context.getPainter().paintScrollPaneBackground(context,
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g, 0, 0, c.getWidth(), c.getHeight());
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paint(context, g);
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context.dispose();
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}
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public void paint(Graphics g, JComponent c) {
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SynthContext context = getContext(c);
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paint(context, g);
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context.dispose();
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}
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protected void paint(SynthContext context, Graphics g) {
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Border vpBorder = scrollpane.getViewportBorder();
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if (vpBorder != null) {
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Rectangle r = scrollpane.getViewportBorderBounds();
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vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height);
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}
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}
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public void paintBorder(SynthContext context, Graphics g, int x,
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int y, int w, int h) {
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context.getPainter().paintScrollPaneBorder(context, g, x, y, w, h);
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}
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protected void installDefaults(JScrollPane scrollpane) {
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updateStyle(scrollpane);
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}
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private void updateStyle(JScrollPane c) {
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SynthContext context = getContext(c, ENABLED);
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SynthStyle oldStyle = style;
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style = SynthLookAndFeel.updateStyle(context, this);
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if (style != oldStyle) {
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Border vpBorder = scrollpane.getViewportBorder();
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if ((vpBorder == null) ||( vpBorder instanceof UIResource)) {
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scrollpane.setViewportBorder(new ViewportBorder(context));
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}
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if (oldStyle != null) {
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uninstallKeyboardActions(c);
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installKeyboardActions(c);
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}
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}
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context.dispose();
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}
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protected void installListeners(JScrollPane c) {
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super.installListeners(c);
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c.addPropertyChangeListener(this);
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}
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protected void uninstallDefaults(JScrollPane c) {
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SynthContext context = getContext(c, ENABLED);
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style.uninstallDefaults(context);
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context.dispose();
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if (scrollpane.getViewportBorder() instanceof UIResource) {
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scrollpane.setViewportBorder(null);
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}
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}
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protected void uninstallListeners(JComponent c) {
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super.uninstallListeners(c);
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c.removePropertyChangeListener(this);
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}
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public SynthContext getContext(JComponent c) {
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return getContext(c, getComponentState(c));
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}
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private SynthContext getContext(JComponent c, int state) {
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return SynthContext.getContext(SynthContext.class, c,
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SynthLookAndFeel.getRegion(c), style, state);
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}
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private Region getRegion(JComponent c) {
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return SynthLookAndFeel.getRegion(c);
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}
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private int getComponentState(JComponent c) {
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return SynthLookAndFeel.getComponentState(c);
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}
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public void propertyChange(PropertyChangeEvent e) {
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if (SynthLookAndFeel.shouldUpdateStyle(e)) {
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updateStyle(scrollpane);
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}
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}
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private class ViewportBorder extends AbstractBorder implements UIResource {
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private Insets insets;
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ViewportBorder(SynthContext context) {
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this.insets = (Insets)context.getStyle().get(context,
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"ScrollPane.viewportBorderInsets");
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if (this.insets == null) {
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this.insets = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
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}
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}
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public void paintBorder(Component c, Graphics g, int x, int y,
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int width, int height) {
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JComponent jc = (JComponent)c;
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SynthContext context = getContext(jc);
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SynthStyle style = context.getStyle();
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if (style == null) {
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assert false: "SynthBorder is being used outside after the " +
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" UI has been uninstalled";
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return;
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}
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context.getPainter().paintViewportBorder(context, g, x, y, width,
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height);
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context.dispose();
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}
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public Insets getBorderInsets(Component c, Insets insets) {
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if (insets == null) {
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return new Insets(this.insets.top, this.insets.left,
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this.insets.bottom, this.insets.right);
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}
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insets.top = this.insets.top;
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insets.bottom = this.insets.bottom;
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insets.left = this.insets.left;
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insets.right = this.insets.left;
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return insets;
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}
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public boolean isBorderOpaque() {
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return false;
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}
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}
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}
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