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/* * Copyright (c) 2002, 2017, Oracle and/or its affiliates. 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.plaf.synth; import java.awt.*; import java.awt.event.*; import java.beans.*; import java.util.*; import javax.swing.*; import javax.swing.plaf.*; import javax.swing.plaf.basic.*; /** * Provides the Synth L&F UI delegate for * {@link javax.swing.JSplitPane}. * * @author Scott Violet * @since 1.7 */ public class SynthSplitPaneUI extends BasicSplitPaneUI implements PropertyChangeListener, SynthUI { /** * Keys to use for forward focus traversal when the JComponent is * managing focus. */ private Set<KeyStroke> managingFocusForwardTraversalKeys; /** * Keys to use for backward focus traversal when the JComponent is * managing focus. */ private Set<KeyStroke> managingFocusBackwardTraversalKeys; /** * Style for the JSplitPane. */ private SynthStyle style; /** * Style for the divider. */ private SynthStyle dividerStyle; /** * Creates a new SynthSplitPaneUI instance * * @param x component to create UI object for * @return the UI object */ public static ComponentUI createUI(JComponent x) { return new SynthSplitPaneUI(); } /** * Installs the UI defaults. */ @Override @SuppressWarnings("deprecation") protected void installDefaults() { updateStyle(splitPane); setOrientation(splitPane.getOrientation()); setContinuousLayout(splitPane.isContinuousLayout()); resetLayoutManager(); /* Install the nonContinuousLayoutDivider here to avoid having to add/remove everything later. */ if (nonContinuousLayoutDivider == null) { setNonContinuousLayoutDivider(createDefaultNonContinuousLayoutDivider(), true); } else { setNonContinuousLayoutDivider(nonContinuousLayoutDivider, true); } // focus forward traversal key if (managingFocusForwardTraversalKeys == null) { managingFocusForwardTraversalKeys = new HashSet<KeyStroke>(); managingFocusForwardTraversalKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, 0)); } splitPane.setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, managingFocusForwardTraversalKeys); // focus backward traversal key if (managingFocusBackwardTraversalKeys == null) { managingFocusBackwardTraversalKeys = new HashSet<KeyStroke>(); managingFocusBackwardTraversalKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_TAB, InputEvent.SHIFT_MASK)); } splitPane.setFocusTraversalKeys(KeyboardFocusManager.BACKWARD_TRAVERSAL_KEYS, managingFocusBackwardTraversalKeys); } private void updateStyle(JSplitPane splitPane) { SynthContext context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER, ENABLED); SynthStyle oldDividerStyle = dividerStyle; dividerStyle = SynthLookAndFeel.updateStyle(context, this); context = getContext(splitPane, ENABLED); SynthStyle oldStyle = style; style = SynthLookAndFeel.updateStyle(context, this); if (style != oldStyle) { Object value = style.get(context, "SplitPane.size"); if (value == null) { value = Integer.valueOf(6); } LookAndFeel.installProperty(splitPane, "dividerSize", value); dividerSize = ((Number) value).intValue(); value = style.get(context, "SplitPane.oneTouchExpandable"); if (value != null) { LookAndFeel.installProperty(splitPane, "oneTouchExpandable", value); } if (divider != null) { splitPane.remove(divider); divider.setDividerSize(splitPane.getDividerSize()); } if (oldStyle != null) { uninstallKeyboardActions(); installKeyboardActions(); } } if (style != oldStyle || dividerStyle != oldDividerStyle) { // Only way to force BasicSplitPaneDivider to reread the // necessary properties. if (divider != null) { splitPane.remove(divider); } divider = createDefaultDivider(); divider.setBasicSplitPaneUI(this); splitPane.add(divider, JSplitPane.DIVIDER); } } /** * Installs the event listeners for the UI. */ @Override protected void installListeners() { super.installListeners(); splitPane.addPropertyChangeListener(this); } /** * Uninstalls the UI defaults. */ @Override protected void uninstallDefaults() { SynthContext context = getContext(splitPane, ENABLED); style.uninstallDefaults(context); style = null; context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER, ENABLED); dividerStyle.uninstallDefaults(context); dividerStyle = null; super.uninstallDefaults(); } /** * Uninstalls the event listeners from the UI. */ @Override protected void uninstallListeners() { super.uninstallListeners(); splitPane.removePropertyChangeListener(this); } /** * {@inheritDoc} */ @Override public SynthContext getContext(JComponent c) { return getContext(c, SynthLookAndFeel.getComponentState(c)); } private SynthContext getContext(JComponent c, int state) { return SynthContext.getContext(c, style, state); } SynthContext getContext(JComponent c, Region region) { return getContext(c, region, getComponentState(c, region)); } private SynthContext getContext(JComponent c, Region region, int state) { if (region == Region.SPLIT_PANE_DIVIDER) { return SynthContext.getContext(c, region, dividerStyle, state); } return SynthContext.getContext(c, region, style, state); } private int getComponentState(JComponent c, Region subregion) { int state = SynthLookAndFeel.getComponentState(c); if (divider.isMouseOver()) { state |= MOUSE_OVER; } return state; } /** * {@inheritDoc} */ @Override public void propertyChange(PropertyChangeEvent e) { if (SynthLookAndFeel.shouldUpdateStyle(e)) { updateStyle((JSplitPane) e.getSource()); } } /** * Creates the default divider. */ @Override public BasicSplitPaneDivider createDefaultDivider() { SynthSplitPaneDivider divider = new SynthSplitPaneDivider(this); divider.setDividerSize(splitPane.getDividerSize()); return divider; } /** * {@inheritDoc} */ @Override @SuppressWarnings("serial") // anonymous class protected Component createDefaultNonContinuousLayoutDivider() { return new Canvas() { public void paint(Graphics g) { paintDragDivider(g, 0, 0, getWidth(), getHeight()); } }; } /** * Notifies this UI delegate to repaint the specified component. * This method paints the component background, then calls * the {@link #paint(SynthContext,Graphics)} method. * * <p>In general, this method does not need to be overridden by subclasses. * All Look and Feel rendering code should reside in the {@code paint} method. * * @param g the {@code Graphics} object used for painting * @param c the component being painted * @see #paint(SynthContext,Graphics) */ @Override public void update(Graphics g, JComponent c) { SynthContext context = getContext(c); SynthLookAndFeel.update(context, g); context.getPainter().paintSplitPaneBackground(context, g, 0, 0, c.getWidth(), c.getHeight()); paint(context, g); } /** * Paints the specified component according to the Look and Feel. * <p>This method is not used by Synth Look and Feel. * Painting is handled by the {@link #paint(SynthContext,Graphics)} method. * * @param g the {@code Graphics} object used for painting * @param c the component being painted * @see #paint(SynthContext,Graphics) */ @Override public void paint(Graphics g, JComponent c) { SynthContext context = getContext(c); paint(context, g); } /** * Paints the specified component. This implementation does nothing. * * @param context context for the component being painted * @param g the {@code Graphics} object used for painting * @see #update(Graphics,JComponent) */ protected void paint(SynthContext context, Graphics g) { // This is done to update package private variables in // BasicSplitPaneUI super.paint(g, splitPane); } /** * {@inheritDoc} */ @Override public void paintBorder(SynthContext context, Graphics g, int x, int y, int w, int h) { context.getPainter().paintSplitPaneBorder(context, g, x, y, w, h); } private void paintDragDivider(Graphics g, int x, int y, int w, int h) { SynthContext context = getContext(splitPane, Region.SPLIT_PANE_DIVIDER); context.setComponentState(((context.getComponentState() | MOUSE_OVER) ^ MOUSE_OVER) | PRESSED); Shape oldClip = g.getClip(); g.clipRect(x, y, w, h); context.getPainter().paintSplitPaneDragDivider(context, g, x, y, w, h, splitPane.getOrientation()); g.setClip(oldClip); } /** * {@inheritDoc} */ @Override public void finishedPaintingChildren(JSplitPane jc, Graphics g) { if (jc == splitPane && getLastDragLocation() != -1 && !isContinuousLayout() && !draggingHW) { if (jc.getOrientation() == JSplitPane.HORIZONTAL_SPLIT) { paintDragDivider(g, getLastDragLocation(), 0, dividerSize - 1, splitPane.getHeight() - 1); } else { paintDragDivider(g, 0, getLastDragLocation(), splitPane.getWidth() - 1, dividerSize - 1); } } } }