| /* |
| * Copyright 2002-2003 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| |
| package javax.swing.plaf.synth; |
| |
| import javax.swing.*; |
| import javax.swing.text.JTextComponent; |
| import javax.swing.border.*; |
| import javax.swing.plaf.*; |
| import javax.swing.plaf.basic.*; |
| |
| import java.beans.PropertyChangeListener; |
| import java.beans.PropertyChangeEvent; |
| |
| import java.awt.*; |
| import java.awt.event.ContainerListener; |
| import java.awt.event.ContainerEvent; |
| import java.awt.event.FocusListener; |
| import java.awt.event.FocusEvent; |
| |
| import sun.swing.plaf.synth.SynthUI; |
| |
| |
| /** |
| * Synth's ScrollPaneUI. |
| * |
| * @author Scott Violet |
| */ |
| class SynthScrollPaneUI extends BasicScrollPaneUI implements |
| PropertyChangeListener, SynthUI { |
| private SynthStyle style; |
| private boolean viewportViewHasFocus = false; |
| private ViewportViewFocusHandler viewportViewFocusHandler; |
| |
| public static ComponentUI createUI(JComponent x) { |
| return new SynthScrollPaneUI(); |
| } |
| |
| @Override |
| public void update(Graphics g, JComponent c) { |
| SynthContext context = getContext(c); |
| |
| SynthLookAndFeel.update(context, g); |
| context.getPainter().paintScrollPaneBackground(context, |
| g, 0, 0, c.getWidth(), c.getHeight()); |
| paint(context, g); |
| context.dispose(); |
| } |
| |
| @Override |
| public void paint(Graphics g, JComponent c) { |
| SynthContext context = getContext(c); |
| |
| paint(context, g); |
| context.dispose(); |
| } |
| |
| protected void paint(SynthContext context, Graphics g) { |
| Border vpBorder = scrollpane.getViewportBorder(); |
| if (vpBorder != null) { |
| Rectangle r = scrollpane.getViewportBorderBounds(); |
| vpBorder.paintBorder(scrollpane, g, r.x, r.y, r.width, r.height); |
| } |
| } |
| |
| |
| public void paintBorder(SynthContext context, Graphics g, int x, |
| int y, int w, int h) { |
| context.getPainter().paintScrollPaneBorder(context, g, x, y, w, h); |
| } |
| |
| @Override |
| protected void installDefaults(JScrollPane scrollpane) { |
| updateStyle(scrollpane); |
| } |
| |
| private void updateStyle(JScrollPane c) { |
| SynthContext context = getContext(c, ENABLED); |
| SynthStyle oldStyle = style; |
| |
| style = SynthLookAndFeel.updateStyle(context, this); |
| if (style != oldStyle) { |
| Border vpBorder = scrollpane.getViewportBorder(); |
| if ((vpBorder == null) ||( vpBorder instanceof UIResource)) { |
| scrollpane.setViewportBorder(new ViewportBorder(context)); |
| } |
| if (oldStyle != null) { |
| uninstallKeyboardActions(c); |
| installKeyboardActions(c); |
| } |
| } |
| context.dispose(); |
| } |
| |
| |
| @Override |
| protected void installListeners(JScrollPane c) { |
| super.installListeners(c); |
| c.addPropertyChangeListener(this); |
| if (UIManager.getBoolean("ScrollPane.useChildTextComponentFocus")){ |
| viewportViewFocusHandler = new ViewportViewFocusHandler(); |
| c.getViewport().addContainerListener(viewportViewFocusHandler); |
| Component view = c.getViewport().getView(); |
| if (view instanceof JTextComponent) { |
| view.addFocusListener(viewportViewFocusHandler); |
| } |
| } |
| } |
| |
| @Override |
| protected void uninstallDefaults(JScrollPane c) { |
| SynthContext context = getContext(c, ENABLED); |
| |
| style.uninstallDefaults(context); |
| context.dispose(); |
| |
| if (scrollpane.getViewportBorder() instanceof UIResource) { |
| scrollpane.setViewportBorder(null); |
| } |
| } |
| |
| |
| @Override |
| protected void uninstallListeners(JComponent c) { |
| super.uninstallListeners(c); |
| c.removePropertyChangeListener(this); |
| if (viewportViewFocusHandler != null) { |
| JViewport viewport = ((JScrollPane) c).getViewport(); |
| viewport.removeContainerListener(viewportViewFocusHandler); |
| if (viewport.getView()!= null) { |
| viewport.getView().removeFocusListener(viewportViewFocusHandler); |
| } |
| viewportViewFocusHandler = null; |
| } |
| } |
| |
| |
| public SynthContext getContext(JComponent c) { |
| return getContext(c, getComponentState(c)); |
| } |
| |
| private SynthContext getContext(JComponent c, int state) { |
| return SynthContext.getContext(SynthContext.class, c, |
| SynthLookAndFeel.getRegion(c), style, state); |
| } |
| |
| |
| private Region getRegion(JComponent c) { |
| return SynthLookAndFeel.getRegion(c); |
| } |
| |
| |
| private int getComponentState(JComponent c) { |
| int baseState = SynthLookAndFeel.getComponentState(c); |
| if (viewportViewFocusHandler!=null && viewportViewHasFocus){ |
| baseState = baseState | FOCUSED; |
| } |
| return baseState; |
| } |
| |
| public void propertyChange(PropertyChangeEvent e) { |
| if (SynthLookAndFeel.shouldUpdateStyle(e)) { |
| updateStyle(scrollpane); |
| } |
| } |
| |
| |
| |
| 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(); |
| } |
| } |
| } |