0N/A/*
2362N/A * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage javax.swing.plaf.synth;
0N/A
0N/Aimport javax.swing.*;
0N/Aimport javax.swing.text.JTextComponent;
0N/Aimport javax.swing.border.*;
0N/Aimport javax.swing.plaf.*;
0N/Aimport javax.swing.plaf.basic.*;
0N/A
0N/Aimport java.beans.PropertyChangeListener;
0N/Aimport java.beans.PropertyChangeEvent;
0N/A
0N/Aimport java.awt.*;
0N/Aimport java.awt.event.ContainerListener;
0N/Aimport java.awt.event.ContainerEvent;
0N/Aimport java.awt.event.FocusListener;
0N/Aimport java.awt.event.FocusEvent;
0N/A
0N/A/**
0N/A * Provides the Synth L&F UI delegate for
0N/A * {@link javax.swing.JScrollPane}.
0N/A *
0N/A * @author Scott Violet
0N/A * @since 1.7
0N/A */
0N/Apublic class SynthScrollPaneUI extends BasicScrollPaneUI
0N/A implements PropertyChangeListener, SynthUI {
0N/A private SynthStyle style;
0N/A private boolean viewportViewHasFocus = false;
0N/A private ViewportViewFocusHandler viewportViewFocusHandler;
0N/A
0N/A /**
0N/A * Creates a new UI object for the given component.
0N/A *
0N/A * @param x component to create UI object for
0N/A * @return the UI object
0N/A */
0N/A public static ComponentUI createUI(JComponent x) {
0N/A return new SynthScrollPaneUI();
0N/A }
0N/A
0N/A /**
0N/A * Notifies this UI delegate to repaint the specified component.
0N/A * This method paints the component background, then calls
0N/A * the {@link #paint(SynthContext,Graphics)} method.
0N/A *
0N/A * <p>In general, this method does not need to be overridden by subclasses.
0N/A * All Look and Feel rendering code should reside in the {@code paint} method.
0N/A *
0N/A * @param g the {@code Graphics} object used for painting
0N/A * @param c the component being painted
0N/A * @see #paint(SynthContext,Graphics)
0N/A */
0N/A @Override
0N/A public void update(Graphics g, JComponent c) {
0N/A SynthContext context = getContext(c);
0N/A
0N/A SynthLookAndFeel.update(context, g);
0N/A context.getPainter().paintScrollPaneBackground(context,
0N/A g, 0, 0, c.getWidth(), c.getHeight());
0N/A paint(context, g);
0N/A context.dispose();
0N/A }
0N/A
0N/A /**
0N/A * Paints the specified component according to the Look and Feel.
0N/A * <p>This method is not used by Synth Look and Feel.
0N/A * Painting is handled by the {@link #paint(SynthContext,Graphics)} method.
0N/A *
0N/A * @param g the {@code Graphics} object used for painting
0N/A * @param c the component being painted
0N/A * @see #paint(SynthContext,Graphics)
0N/A */
0N/A @Override
0N/A public void paint(Graphics g, JComponent c) {
0N/A SynthContext context = getContext(c);
0N/A
0N/A paint(context, g);
0N/A context.dispose();
0N/A }
0N/A
0N/A /**
0N/A * Paints the specified component.
0N/A *
0N/A * @param context context for the component being painted
0N/A * @param g the {@code Graphics} object used for painting
0N/A * @see #update(Graphics,JComponent)
0N/A */
0N/A protected void paint(SynthContext context, Graphics g) {
0N/A Border vpBorder = scrollpane.getViewportBorder();
0N/A if (vpBorder != null) {
0N/A Rectangle r = scrollpane.getViewportBorderBounds();
0N/A vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height);
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A public void paintBorder(SynthContext context, Graphics g, int x,
0N/A int y, int w, int h) {
0N/A context.getPainter().paintScrollPaneBorder(context, g, x, y, w, h);
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A protected void installDefaults(JScrollPane scrollpane) {
0N/A updateStyle(scrollpane);
0N/A }
0N/A
0N/A private void updateStyle(JScrollPane c) {
0N/A SynthContext context = getContext(c, ENABLED);
0N/A SynthStyle oldStyle = style;
0N/A
0N/A style = SynthLookAndFeel.updateStyle(context, this);
0N/A if (style != oldStyle) {
0N/A Border vpBorder = scrollpane.getViewportBorder();
0N/A if ((vpBorder == null) ||( vpBorder instanceof UIResource)) {
0N/A scrollpane.setViewportBorder(new ViewportBorder(context));
0N/A }
0N/A if (oldStyle != null) {
0N/A uninstallKeyboardActions(c);
0N/A installKeyboardActions(c);
0N/A }
0N/A }
0N/A context.dispose();
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A protected void installListeners(JScrollPane c) {
0N/A super.installListeners(c);
0N/A c.addPropertyChangeListener(this);
0N/A if (UIManager.getBoolean("ScrollPane.useChildTextComponentFocus")){
0N/A viewportViewFocusHandler = new ViewportViewFocusHandler();
0N/A c.getViewport().addContainerListener(viewportViewFocusHandler);
0N/A Component view = c.getViewport().getView();
0N/A if (view instanceof JTextComponent) {
0N/A view.addFocusListener(viewportViewFocusHandler);
0N/A }
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A protected void uninstallDefaults(JScrollPane c) {
0N/A SynthContext context = getContext(c, ENABLED);
0N/A
0N/A style.uninstallDefaults(context);
0N/A context.dispose();
0N/A
0N/A if (scrollpane.getViewportBorder() instanceof UIResource) {
0N/A scrollpane.setViewportBorder(null);
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A protected void uninstallListeners(JComponent c) {
0N/A super.uninstallListeners(c);
0N/A c.removePropertyChangeListener(this);
0N/A if (viewportViewFocusHandler != null) {
0N/A JViewport viewport = ((JScrollPane) c).getViewport();
0N/A viewport.removeContainerListener(viewportViewFocusHandler);
0N/A if (viewport.getView()!= null) {
0N/A viewport.getView().removeFocusListener(viewportViewFocusHandler);
0N/A }
0N/A viewportViewFocusHandler = null;
0N/A }
0N/A }
0N/A
0N/A /**
0N/A * @inheritDoc
0N/A */
0N/A @Override
0N/A public SynthContext getContext(JComponent c) {
0N/A return getContext(c, getComponentState(c));
0N/A }
0N/A
0N/A private SynthContext getContext(JComponent c, int state) {
0N/A return SynthContext.getContext(SynthContext.class, c,
0N/A SynthLookAndFeel.getRegion(c), style, state);
0N/A }
0N/A
0N/A private int getComponentState(JComponent c) {
0N/A int baseState = SynthLookAndFeel.getComponentState(c);
0N/A if (viewportViewFocusHandler!=null && viewportViewHasFocus){
0N/A baseState = baseState | FOCUSED;
0N/A }
0N/A return baseState;
0N/A }
0N/A
0N/A public void propertyChange(PropertyChangeEvent e) {
0N/A if (SynthLookAndFeel.shouldUpdateStyle(e)) {
0N/A updateStyle(scrollpane);
0N/A }
}
private class ViewportBorder extends AbstractBorder implements UIResource {
private Insets insets;
ViewportBorder(SynthContext context) {
this.insets = (Insets)context.getStyle().get(context,
"ScrollPane.viewportBorderInsets");
if (this.insets == null) {
this.insets = SynthLookAndFeel.EMPTY_UIRESOURCE_INSETS;
}
}
@Override
public void paintBorder(Component c, Graphics g, int x, int y,
int width, int height) {
JComponent jc = (JComponent)c;
SynthContext context = getContext(jc);
SynthStyle style = context.getStyle();
if (style == null) {
assert false: "SynthBorder is being used outside after the " +
" UI has been uninstalled";
return;
}
context.getPainter().paintViewportBorder(context, g, x, y, width,
height);
context.dispose();
}
@Override
public Insets getBorderInsets(Component c, Insets insets) {
if (insets == null) {
return new Insets(this.insets.top, this.insets.left,
this.insets.bottom, this.insets.right);
}
insets.top = this.insets.top;
insets.bottom = this.insets.bottom;
insets.left = this.insets.left;
insets.right = this.insets.left;
return insets;
}
@Override
public boolean isBorderOpaque() {
return false;
}
}
/**
* Handle keeping track of the viewport's view's focus
*/
private class ViewportViewFocusHandler implements ContainerListener,
FocusListener{
public void componentAdded(ContainerEvent e) {
if (e.getChild() instanceof JTextComponent) {
e.getChild().addFocusListener(this);
viewportViewHasFocus = e.getChild().isFocusOwner();
scrollpane.repaint();
}
}
public void componentRemoved(ContainerEvent e) {
if (e.getChild() instanceof JTextComponent) {
e.getChild().removeFocusListener(this);
}
}
public void focusGained(FocusEvent e) {
viewportViewHasFocus = true;
scrollpane.repaint();
}
public void focusLost(FocusEvent e) {
viewportViewHasFocus = false;
scrollpane.repaint();
}
}
}