JDK14/Java14源码在线阅读
JDK14/Java14源码在线阅读 /
java.desktop /
share /
classes /
javax /
swing /
plaf /
basic /
BasicMenuItemUI.java
/*
* Copyright (c) 1997, 2019, 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.basic;
import java.awt.*;
import java.awt.event.*;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.*;
import javax.swing.text.View;
import sun.swing.*;
/**
* BasicMenuItem implementation
*
* @author Georges Saab
* @author David Karlton
* @author Arnaud Weber
* @author Fredrik Lagerblad
*/
public class BasicMenuItemUI extends MenuItemUI
{
/**
* The instance of {@code JMenuItem}.
*/
protected JMenuItem menuItem = null;
/**
* The color of the selection background.
*/
protected Color selectionBackground;
/**
* The color of the selection foreground.
*/
protected Color selectionForeground;
/**
* The color of the disabled foreground.
*/
protected Color disabledForeground;
/**
* The color of the accelerator foreground.
*/
protected Color acceleratorForeground;
/**
* The color of the accelerator selection.
*/
protected Color acceleratorSelectionForeground;
/**
* Accelerator delimiter string, such as {@code '+'} in {@code 'Ctrl+C'}.
* @since 1.7
*/
protected String acceleratorDelimiter;
/**
* The gap between the text and the icon.
*/
protected int defaultTextIconGap;
/**
* The accelerator font.
*/
protected Font acceleratorFont;
/**
* The instance of {@code MouseInputListener}.
*/
protected MouseInputListener mouseInputListener;
/**
* The instance of {@code MenuDragMouseListener}.
*/
protected MenuDragMouseListener menuDragMouseListener;
/**
* The instance of {@code MenuKeyListener}.
*/
protected MenuKeyListener menuKeyListener;
/**
* {@code PropertyChangeListener} returned from
* {@code createPropertyChangeListener}. You should not
* need to access this field, rather if you want to customize the
* {@code PropertyChangeListener} override
* {@code createPropertyChangeListener}.
*
* @since 1.6
* @see #createPropertyChangeListener
*/
protected PropertyChangeListener propertyChangeListener;
// BasicMenuUI also uses this.
Handler handler;
/**
* The arrow icon.
*/
protected Icon arrowIcon = null;
/**
* The check icon.
*/
protected Icon checkIcon = null;
/**
* The value represents if the old border is painted.
*/
protected boolean oldBorderPainted;
/* diagnostic aids -- should be false for production builds. */
private static final boolean TRACE = false; // trace creates and disposes
private static final boolean VERBOSE = false; // show reuse hits/misses
private static final boolean DEBUG = false; // show bad params, misc.
static void loadActionMap(LazyActionMap map) {
// NOTE: BasicMenuUI also calls into this method.
map.put(new Actions(Actions.CLICK));
BasicLookAndFeel.installAudioActionMap(map);
}
/**
* Returns a new instance of {@code BasicMenuItemUI}.
*
* @param c a component
* @return a new instance of {@code BasicMenuItemUI}
*/
public static ComponentUI createUI(JComponent c) {
return new BasicMenuItemUI();
}
public void installUI(JComponent c) {
menuItem = (JMenuItem) c;
installDefaults();
installComponents(menuItem);
installListeners();
installKeyboardActions();
}
/**
* Installs default properties.
*/
protected void installDefaults() {
String prefix = getPropertyPrefix();
acceleratorFont = UIManager.getFont("MenuItem.acceleratorFont");
// use default if missing so that BasicMenuItemUI can be used in other
// LAFs like Nimbus
if (acceleratorFont == null) {
acceleratorFont = UIManager.getFont("MenuItem.font");
}
Object opaque = UIManager.get(getPropertyPrefix() + ".opaque");
if (opaque != null) {
LookAndFeel.installProperty(menuItem, "opaque", opaque);
}
else {
LookAndFeel.installProperty(menuItem, "opaque", Boolean.TRUE);
}
if(menuItem.getMargin() == null ||
(menuItem.getMargin() instanceof UIResource)) {
menuItem.setMargin(UIManager.getInsets(prefix + ".margin"));
}
LookAndFeel.installProperty(menuItem, "iconTextGap", Integer.valueOf(4));
defaultTextIconGap = menuItem.getIconTextGap();
LookAndFeel.installBorder(menuItem, prefix + ".border");
oldBorderPainted = menuItem.isBorderPainted();
LookAndFeel.installProperty(menuItem, "borderPainted",
UIManager.getBoolean(prefix + ".borderPainted"));
LookAndFeel.installColorsAndFont(menuItem,
prefix + ".background",
prefix + ".foreground",
prefix + ".font");
// MenuItem specific defaults
if (selectionBackground == null ||
selectionBackground instanceof UIResource) {
selectionBackground =
UIManager.getColor(prefix + ".selectionBackground");
}
if (selectionForeground == null ||
selectionForeground instanceof UIResource) {
selectionForeground =
UIManager.getColor(prefix + ".selectionForeground");
}
if (disabledForeground == null ||
disabledForeground instanceof UIResource) {
disabledForeground =
UIManager.getColor(prefix + ".disabledForeground");
}
if (acceleratorForeground == null ||
acceleratorForeground instanceof UIResource) {
acceleratorForeground =
UIManager.getColor(prefix + ".acceleratorForeground");
}
if (acceleratorSelectionForeground == null ||
acceleratorSelectionForeground instanceof UIResource) {
acceleratorSelectionForeground =
UIManager.getColor(prefix + ".acceleratorSelectionForeground");
}
// Get accelerator delimiter
acceleratorDelimiter =
UIManager.getString("MenuItem.acceleratorDelimiter");
if (acceleratorDelimiter == null) { acceleratorDelimiter = "+"; }
// Icons
if (arrowIcon == null ||
arrowIcon instanceof UIResource) {
arrowIcon = UIManager.getIcon(prefix + ".arrowIcon");
}
updateCheckIcon();
}
/**
* Updates check Icon based on column layout
*/
private void updateCheckIcon() {
String prefix = getPropertyPrefix();
if (checkIcon == null ||
checkIcon instanceof UIResource) {
checkIcon = UIManager.getIcon(prefix + ".checkIcon");
//In case of column layout, .checkIconFactory is defined for this UI,
//the icon is compatible with it and useCheckAndArrow() is true,
//then the icon is handled by the checkIcon.
boolean isColumnLayout = MenuItemLayoutHelper.isColumnLayout(
BasicGraphicsUtils.isLeftToRight(menuItem), menuItem);
if (isColumnLayout) {
MenuItemCheckIconFactory iconFactory =
(MenuItemCheckIconFactory) UIManager.get(prefix
+ ".checkIconFactory");
if (iconFactory != null
&& MenuItemLayoutHelper.useCheckAndArrow(menuItem)
&& iconFactory.isCompatible(checkIcon, prefix)) {
checkIcon = iconFactory.getIcon(menuItem);
}
}
}
}
/**
*
* @param menuItem a menu item
* @since 1.3
*/
protected void installComponents(JMenuItem menuItem){
BasicHTML.updateRenderer(menuItem, menuItem.getText());
}
/**
* Returns a property prefix.
*
* @return a property prefix
*/
protected String getPropertyPrefix() {
return "MenuItem";
}
/**
* Registers listeners.
*/
protected void installListeners() {
if ((mouseInputListener = createMouseInputListener(menuItem)) != null) {
menuItem.addMouseListener(mouseInputListener);
menuItem.addMouseMotionListener(mouseInputListener);
}
if ((menuDragMouseListener = createMenuDragMouseListener(menuItem)) != null) {
menuItem.addMenuDragMouseListener(menuDragMouseListener);
}
if ((menuKeyListener = createMenuKeyListener(menuItem)) != null) {
menuItem.addMenuKeyListener(menuKeyListener);
}
if ((propertyChangeListener = createPropertyChangeListener(menuItem)) != null) {
menuItem.addPropertyChangeListener(propertyChangeListener);
}
}
/**
* Registers keyboard action.
*/
protected void installKeyboardActions() {
installLazyActionMap();
updateAcceleratorBinding();
}
void installLazyActionMap() {
LazyActionMap.installLazyActionMap(menuItem, BasicMenuItemUI.class,
getPropertyPrefix() + ".actionMap");
}
public void uninstallUI(JComponent c) {
menuItem = (JMenuItem)c;
uninstallDefaults();
uninstallComponents(menuItem);
uninstallListeners();
uninstallKeyboardActions();
MenuItemLayoutHelper.clearUsedParentClientProperties(menuItem);
menuItem = null;
}
/**
* Uninstalls default properties.
*/
protected void uninstallDefaults() {
LookAndFeel.uninstallBorder(menuItem);
LookAndFeel.installProperty(menuItem, "borderPainted", oldBorderPainted);
if (menuItem.getMargin() instanceof UIResource)
menuItem.setMargin(null);
if (arrowIcon instanceof UIResource)
arrowIcon = null;
if (checkIcon instanceof UIResource)
checkIcon = null;
}
/**
* Unregisters components.
*
* @param menuItem a menu item
* @since 1.3
*/
protected void uninstallComponents(JMenuItem menuItem){
BasicHTML.updateRenderer(menuItem, "");
}
/**
* Unregisters listeners.
*/
protected void uninstallListeners() {
if (mouseInputListener != null) {
menuItem.removeMouseListener(mouseInputListener);
menuItem.removeMouseMotionListener(mouseInputListener);
}
if (menuDragMouseListener != null) {
menuItem.removeMenuDragMouseListener(menuDragMouseListener);
}
if (menuKeyListener != null) {
menuItem.removeMenuKeyListener(menuKeyListener);
}
if (propertyChangeListener != null) {
menuItem.removePropertyChangeListener(propertyChangeListener);
}
mouseInputListener = null;
menuDragMouseListener = null;
menuKeyListener = null;
propertyChangeListener = null;
handler = null;
}
/**
* Unregisters keyboard actions.
*/
protected void uninstallKeyboardActions() {
SwingUtilities.replaceUIActionMap(menuItem, null);
SwingUtilities.replaceUIInputMap(menuItem, JComponent.
WHEN_IN_FOCUSED_WINDOW, null);
}
/**
* Returns an instance of {@code MouseInputListener}.
*
* @param c a component
* @return an instance of {@code MouseInputListener}
*/
protected MouseInputListener createMouseInputListener(JComponent c) {
return getHandler();
}
/**
* Returns an instance of {@code MenuDragMouseListener}.
*
* @param c a component
* @return an instance of {@code MenuDragMouseListener}
*/
protected MenuDragMouseListener createMenuDragMouseListener(JComponent c) {
return getHandler();
}
/**
* Returns an instance of {@code MenuKeyListener}.
*
* @param c a component
* @return an instance of {@code MenuKeyListener}
*/
protected MenuKeyListener createMenuKeyListener(JComponent c) {
return null;
}
/**
* Creates a {@code PropertyChangeListener} which will be added to
* the menu item.
* If this method returns null then it will not be added to the menu item.
*
* @param c a component
* @return an instance of a {@code PropertyChangeListener} or null
* @since 1.6
*/
protected PropertyChangeListener
createPropertyChangeListener(JComponent c) {
return getHandler();
}
Handler getHandler() {
if (handler == null) {
handler = new Handler();
}
return handler;
}
InputMap createInputMap(int condition) {
if (condition == JComponent.WHEN_IN_FOCUSED_WINDOW) {
return new ComponentInputMapUIResource(menuItem);
}
return null;
}
@SuppressWarnings("deprecation")
void updateAcceleratorBinding() {
KeyStroke accelerator = menuItem.getAccelerator();
InputMap windowInputMap = SwingUtilities.getUIInputMap(
menuItem, JComponent.WHEN_IN_FOCUSED_WINDOW);
if (windowInputMap != null) {
windowInputMap.clear();
}
if (accelerator != null) {
if (windowInputMap == null) {
windowInputMap = createInputMap(JComponent.
WHEN_IN_FOCUSED_WINDOW);
SwingUtilities.replaceUIInputMap(menuItem,
JComponent.WHEN_IN_FOCUSED_WINDOW, windowInputMap);
}
windowInputMap.put(accelerator, "doClick");
int modifiers = accelerator.getModifiers();
if (((modifiers & InputEvent.ALT_DOWN_MASK) != 0) &&
((modifiers & InputEvent.ALT_GRAPH_DOWN_MASK) != 0)) {
//When both ALT and ALT_GRAPH are set, add the ALT only
// modifier keystroke which is used for left ALT key.
// Unsetting the ALT_GRAPH will do that as ALT is already set
modifiers &= ~InputEvent.ALT_GRAPH_DOWN_MASK;
modifiers &= ~InputEvent.ALT_GRAPH_MASK;
KeyStroke keyStroke = KeyStroke.getKeyStroke(accelerator.getKeyCode(),
modifiers, accelerator.isOnKeyRelease());
windowInputMap.put(keyStroke, "doClick");
} else if (((modifiers & InputEvent.ALT_DOWN_MASK) != 0) && (
(modifiers & InputEvent.ALT_GRAPH_DOWN_MASK) == 0)) {
//When only ALT modifier is set, add the ALT + ALT_GRAPH
// modifier keystroke which is used for right ALT key
modifiers |= InputEvent.ALT_GRAPH_DOWN_MASK;
KeyStroke keyStroke = KeyStroke.getKeyStroke(accelerator.getKeyCode(),
modifiers, accelerator.isOnKeyRelease());
windowInputMap.put(keyStroke, "doClick");
} else if ((modifiers & InputEvent.ALT_GRAPH_DOWN_MASK) != 0) {
//When only ALT_GRAPH is set, remove the ALT_GRAPH only
// modifier and add the ALT and ALT+ALT_GRAPH modifiers
// keystroke which are used for left ALT key and right ALT
// respectively
modifiers &= ~InputEvent.ALT_GRAPH_DOWN_MASK;
modifiers &= ~InputEvent.ALT_GRAPH_MASK;
modifiers |= InputEvent.ALT_DOWN_MASK;
KeyStroke keyStroke = KeyStroke.getKeyStroke(accelerator.getKeyCode(),
modifiers, accelerator.isOnKeyRelease());
windowInputMap.put(keyStroke, "doClick");
//Add ALT+ALT_GRAPH modifier which is used for right ALT key
modifiers |= InputEvent.ALT_GRAPH_DOWN_MASK;
keyStroke = KeyStroke.getKeyStroke(accelerator.getKeyCode(),
modifiers, accelerator.isOnKeyRelease());
windowInputMap.put(keyStroke, "doClick");
}
}
}
public Dimension getMinimumSize(JComponent c) {
Dimension d = null;
View v = (View) c.getClientProperty(BasicHTML.propertyKey);
if (v != null) {
d = getPreferredSize(c);
d.width -= v.getPreferredSpan(View.X_AXIS) - v.getMinimumSpan(View.X_AXIS);
}
return d;
}
public Dimension getPreferredSize(JComponent c) {
return getPreferredMenuItemSize(c,
checkIcon,
arrowIcon,
defaultTextIconGap);
}
public Dimension getMaximumSize(JComponent c) {
Dimension d = null;
View v = (View) c.getClientProperty(BasicHTML.propertyKey);
if (v != null) {
d = getPreferredSize(c);
d.width += v.getMaximumSpan(View.X_AXIS) - v.getPreferredSpan(View.X_AXIS);
}
return d;
}
/**
* Returns the preferred size of a menu item.
*
* @param c a component
* @param checkIcon a check icon
* @param arrowIcon an arrow icon
* @param defaultTextIconGap a gap between a text and an icon
* @return the preferred size of a menu item
*/
protected Dimension getPreferredMenuItemSize(JComponent c,
Icon checkIcon,
Icon arrowIcon,
int defaultTextIconGap) {
// The method also determines the preferred width of the
// parent popup menu (through DefaultMenuLayout class).
// The menu width equals to the maximal width
// among child menu items.
// Menu item width will be a sum of the widest check icon, label,
// arrow icon and accelerator text among neighbor menu items.
// For the latest menu item we will know the maximal widths exactly.
// It will be the widest menu item and it will determine
// the width of the parent popup menu.
// !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
// There is a conceptual problem: if user sets preferred size manually
// for a menu item, this method won't be called for it
// (see JComponent.getPreferredSize()),
// maximal widths won't be calculated, other menu items won't be able
// to take them into account and will be layouted in such a way,
// as there is no the item with manual preferred size.
// But after the first paint() method call, all maximal widths
// will be correctly calculated and layout of some menu items
// can be changed. For example, it can cause a shift of
// the icon and text when user points a menu item by mouse.
JMenuItem mi = (JMenuItem) c;
MenuItemLayoutHelper lh = new MenuItemLayoutHelper(mi, checkIcon,
arrowIcon, MenuItemLayoutHelper.createMaxRect(), defaultTextIconGap,
acceleratorDelimiter, BasicGraphicsUtils.isLeftToRight(mi),
mi.getFont(), acceleratorFont,
MenuItemLayoutHelper.useCheckAndArrow(menuItem),
getPropertyPrefix());
Dimension result = new Dimension();
// Calculate the result width
result.width = lh.getLeadingGap();
MenuItemLayoutHelper.addMaxWidth(lh.getCheckSize(),
lh.getAfterCheckIconGap(), result);
// Take into account mimimal text offset.
if ((!lh.isTopLevelMenu())
&& (lh.getMinTextOffset() > 0)
&& (result.width < lh.getMinTextOffset())) {
result.width = lh.getMinTextOffset();
}
MenuItemLayoutHelper.addMaxWidth(lh.getLabelSize(), lh.getGap(), result);
MenuItemLayoutHelper.addMaxWidth(lh.getAccSize(), lh.getGap(), result);
MenuItemLayoutHelper.addMaxWidth(lh.getArrowSize(), lh.getGap(), result);
// Calculate the result height
result.height = MenuItemLayoutHelper.max(lh.getCheckSize().getHeight(),
lh.getLabelSize().getHeight(), lh.getAccSize().getHeight(),
lh.getArrowSize().getHeight());
// Take into account menu item insets
Insets insets = lh.getMenuItem().getInsets();
if(insets != null) {
result.width += insets.left + insets.right;
result.height += insets.top + insets.bottom;
}
// if the width is even, bump it up one. This is critical
// for the focus dash line to draw properly
if(result.width%2 == 0) {
result.width++;
}
// if the height is even, bump it up one. This is critical
// for the text to center properly
if(result.height%2 == 0
&& Boolean.TRUE !=
UIManager.get(getPropertyPrefix() + ".evenHeight")) {
result.height++;
}
return result;
}
/**
* We draw the background in paintMenuItem()
* so override update (which fills the background of opaque
* components by default) to just call paint().
*
*/
public void update(Graphics g, JComponent c) {
paint(g, c);
}
public void paint(Graphics g, JComponent c) {
paintMenuItem(g, c, checkIcon, arrowIcon,
selectionBackground, selectionForeground,
defaultTextIconGap);
}
/**
* Paints a menu item.
*
* @param g an instance of {@code Graphics}
* @param c a component
* @param checkIcon a check icon
* @param arrowIcon an arrow icon
* @param background a background color
* @param foreground a foreground color
* @param defaultTextIconGap a gap between a text and an icon
*/
protected void paintMenuItem(Graphics g, JComponent c,
Icon checkIcon, Icon arrowIcon,
Color background, Color foreground,
int defaultTextIconGap) {
// Save original graphics font and color
Font holdf = g.getFont();
Color holdc = g.getColor();
JMenuItem mi = (JMenuItem) c;
g.setFont(mi.getFont());
Rectangle viewRect = new Rectangle(0, 0, mi.getWidth(), mi.getHeight());
applyInsets(viewRect, mi.getInsets());
MenuItemLayoutHelper lh = new MenuItemLayoutHelper(mi, checkIcon,
arrowIcon, viewRect, defaultTextIconGap, acceleratorDelimiter,
BasicGraphicsUtils.isLeftToRight(mi), mi.getFont(),
acceleratorFont, MenuItemLayoutHelper.useCheckAndArrow(menuItem),
getPropertyPrefix());
MenuItemLayoutHelper.LayoutResult lr = lh.layoutMenuItem();
paintBackground(g, mi, background);
paintCheckIcon(g, lh, lr, holdc, foreground);
paintIcon(g, lh, lr, holdc);
paintText(g, lh, lr);
paintAccText(g, lh, lr);
paintArrowIcon(g, lh, lr, foreground);
// Restore original graphics font and color
g.setColor(holdc);
g.setFont(holdf);
}
private void paintIcon(Graphics g, MenuItemLayoutHelper lh,
MenuItemLayoutHelper.LayoutResult lr, Color holdc) {
if (lh.getIcon() != null) {
Icon icon;
ButtonModel model = lh.getMenuItem().getModel();
if (!model.isEnabled()) {
icon = lh.getMenuItem().getDisabledIcon();
} else if (model.isPressed() && model.isArmed()) {
icon = lh.getMenuItem().getPressedIcon();
if (icon == null) {
// Use default icon
icon = lh.getMenuItem().getIcon();
}
} else {
icon = lh.getMenuItem().getIcon();
}
if (icon != null) {
icon.paintIcon(lh.getMenuItem(), g, lr.getIconRect().x,
lr.getIconRect().y);
g.setColor(holdc);
}
}
}
private void paintCheckIcon(Graphics g, MenuItemLayoutHelper lh,
MenuItemLayoutHelper.LayoutResult lr,
Color holdc, Color foreground) {
if (lh.getCheckIcon() != null) {
ButtonModel model = lh.getMenuItem().getModel();
if (model.isArmed() || (lh.getMenuItem() instanceof JMenu
&& model.isSelected())) {
g.setColor(foreground);
} else {
g.setColor(holdc);
}
if (lh.useCheckAndArrow()) {
lh.getCheckIcon().paintIcon(lh.getMenuItem(), g,
lr.getCheckRect().x, lr.getCheckRect().y);
}
g.setColor(holdc);
}
}
private void paintAccText(Graphics g, MenuItemLayoutHelper lh,
MenuItemLayoutHelper.LayoutResult lr) {
if (!lh.getAccText().isEmpty()) {
ButtonModel model = lh.getMenuItem().getModel();
g.setFont(lh.getAccFontMetrics().getFont());
if (!model.isEnabled()) {
// *** paint the accText disabled
if (disabledForeground != null) {
g.setColor(disabledForeground);
SwingUtilities2.drawString(lh.getMenuItem(), g,
lh.getAccText(), lr.getAccRect().x,
lr.getAccRect().y + lh.getAccFontMetrics().getAscent());
} else {
g.setColor(lh.getMenuItem().getBackground().brighter());
SwingUtilities2.drawString(lh.getMenuItem(), g,
lh.getAccText(), lr.getAccRect().x,
lr.getAccRect().y + lh.getAccFontMetrics().getAscent());
g.setColor(lh.getMenuItem().getBackground().darker());
SwingUtilities2.drawString(lh.getMenuItem(), g,
lh.getAccText(), lr.getAccRect().x - 1,
lr.getAccRect().y + lh.getFontMetrics().getAscent() - 1);
}
} else {
// *** paint the accText normally
if (model.isArmed()
|| (lh.getMenuItem() instanceof JMenu
&& model.isSelected())) {
g.setColor(acceleratorSelectionForeground);
} else {
g.setColor(acceleratorForeground);
}
SwingUtilities2.drawString(lh.getMenuItem(), g, lh.getAccText(),
lr.getAccRect().x, lr.getAccRect().y +
lh.getAccFontMetrics().getAscent());
}
}
}
private void paintText(Graphics g, MenuItemLayoutHelper lh,
MenuItemLayoutHelper.LayoutResult lr) {
if (!lh.getText().isEmpty()) {
if (lh.getHtmlView() != null) {
// Text is HTML
lh.getHtmlView().paint(g, lr.getTextRect());
} else {
// Text isn't HTML
paintText(g, lh.getMenuItem(), lr.getTextRect(), lh.getText());
}
}
}
private void paintArrowIcon(Graphics g, MenuItemLayoutHelper lh,
MenuItemLayoutHelper.LayoutResult lr,
Color foreground) {
if (lh.getArrowIcon() != null) {
ButtonModel model = lh.getMenuItem().getModel();
if (model.isArmed() || (lh.getMenuItem() instanceof JMenu
&& model.isSelected())) {
g.setColor(foreground);
}
if (lh.useCheckAndArrow()) {
lh.getArrowIcon().paintIcon(lh.getMenuItem(), g,
lr.getArrowRect().x, lr.getArrowRect().y);
}
}
}
private void applyInsets(Rectangle rect, Insets insets) {
if(insets != null) {
rect.x += insets.left;
rect.y += insets.top;
rect.width -= (insets.right + rect.x);
rect.height -= (insets.bottom + rect.y);
}
}
/**
* Draws the background of the menu item.
*
* @param g the paint graphics
* @param menuItem menu item to be painted
* @param bgColor selection background color
* @since 1.4
*/
protected void paintBackground(Graphics g, JMenuItem menuItem, Color bgColor) {
ButtonModel model = menuItem.getModel();
Color oldColor = g.getColor();
int menuWidth = menuItem.getWidth();
int menuHeight = menuItem.getHeight();
if(menuItem.isOpaque()) {
if (model.isArmed()|| (menuItem instanceof JMenu && model.isSelected())) {
g.setColor(bgColor);
g.fillRect(0,0, menuWidth, menuHeight);
} else {
g.setColor(menuItem.getBackground());
g.fillRect(0,0, menuWidth, menuHeight);
}
g.setColor(oldColor);
}
else if (model.isArmed() || (menuItem instanceof JMenu &&
model.isSelected())) {
g.setColor(bgColor);
g.fillRect(0,0, menuWidth, menuHeight);
g.setColor(oldColor);
}
}
/**
* Renders the text of the current menu item.
*
* @param g graphics context
* @param menuItem menu item to render
* @param textRect bounding rectangle for rendering the text
* @param text string to render
* @since 1.4
*/
protected void paintText(Graphics g, JMenuItem menuItem, Rectangle textRect, String text) {
ButtonModel model = menuItem.getModel();
FontMetrics fm = SwingUtilities2.getFontMetrics(menuItem, g);
int mnemIndex = menuItem.getDisplayedMnemonicIndex();
if(!model.isEnabled()) {
// *** paint the text disabled
if ( UIManager.get("MenuItem.disabledForeground") instanceof Color ) {
g.setColor( UIManager.getColor("MenuItem.disabledForeground") );
SwingUtilities2.drawStringUnderlineCharAt(menuItem, g,text,
mnemIndex, textRect.x, textRect.y + fm.getAscent());
} else {
g.setColor(menuItem.getBackground().brighter());
SwingUtilities2.drawStringUnderlineCharAt(menuItem, g, text,
mnemIndex, textRect.x, textRect.y + fm.getAscent());
g.setColor(menuItem.getBackground().darker());
SwingUtilities2.drawStringUnderlineCharAt(menuItem, g,text,
mnemIndex, textRect.x - 1, textRect.y +
fm.getAscent() - 1);
}
} else {
// *** paint the text normally
if (model.isArmed()|| (menuItem instanceof JMenu && model.isSelected())) {
g.setColor(selectionForeground); // Uses protected field.
}
SwingUtilities2.drawStringUnderlineCharAt(menuItem, g,text,
mnemIndex, textRect.x, textRect.y + fm.getAscent());
}
}
/**
* Returns a menu element path.
*
* @return a menu element path
*/
public MenuElement[] getPath() {
MenuSelectionManager m = MenuSelectionManager.defaultManager();
MenuElement[] oldPath = m.getSelectedPath();
MenuElement[] newPath;
int i = oldPath.length;
if (i == 0)
return new MenuElement[0];
Component parent = menuItem.getParent();
if (oldPath[i-1].getComponent() == parent) {
// The parent popup menu is the last so far
newPath = new MenuElement[i+1];
System.arraycopy(oldPath, 0, newPath, 0, i);
newPath[i] = menuItem;
} else {
// A sibling menuitem is the current selection
//
// This probably needs to handle 'exit submenu into
// a menu item. Search backwards along the current
// selection until you find the parent popup menu,
// then copy up to that and add yourself...
int j;
for (j = oldPath.length-1; j >= 0; j--) {
if (oldPath[j].getComponent() == parent)
break;
}
newPath = new MenuElement[j+2];
System.arraycopy(oldPath, 0, newPath, 0, j+1);
newPath[j+1] = menuItem;
/*
System.out.println("Sibling condition -- ");
System.out.println("Old array : ");
printMenuElementArray(oldPath, false);
System.out.println("New array : ");
printMenuElementArray(newPath, false);
*/
}
return newPath;
}
void printMenuElementArray(MenuElement[] path, boolean dumpStack) {
System.out.println("Path is(");
int i, j;
for(i=0,j=path.length; i<j ;i++){
for (int k=0; k<=i; k++)
System.out.print(" ");
MenuElement me = path[i];
if(me instanceof JMenuItem)
System.out.println(((JMenuItem)me).getText() + ", ");
else if (me == null)
System.out.println("NULL , ");
else
System.out.println("" + me + ", ");
}
System.out.println(")");
if (dumpStack == true)
Thread.dumpStack();
}
/** Mouse input handler */
protected class MouseInputHandler implements MouseInputListener {
// NOTE: This class exists only for backward compatibility. All
// its functionality has been moved into Handler. If you need to add
// new functionality add it to the Handler, but make sure this
// class calls into the Handler.
/** {@inheritDoc} */
public void mouseClicked(MouseEvent e) {
getHandler().mouseClicked(e);
}
/** {@inheritDoc} */
public void mousePressed(MouseEvent e) {
getHandler().mousePressed(e);
}
/** {@inheritDoc} */
public void mouseReleased(MouseEvent e) {
getHandler().mouseReleased(e);
}
/** {@inheritDoc} */
public void mouseEntered(MouseEvent e) {
getHandler().mouseEntered(e);
}
/** {@inheritDoc} */
public void mouseExited(MouseEvent e) {
getHandler().mouseExited(e);
}
/** {@inheritDoc} */
public void mouseDragged(MouseEvent e) {
getHandler().mouseDragged(e);
}
/** {@inheritDoc} */
public void mouseMoved(MouseEvent e) {
getHandler().mouseMoved(e);
}
}
private static class Actions extends UIAction {
private static final String CLICK = "doClick";
Actions(String key) {
super(key);
}
public void actionPerformed(ActionEvent e) {
JMenuItem mi = (JMenuItem)e.getSource();
MenuSelectionManager.defaultManager().clearSelectedPath();
mi.doClick();
}
}
boolean doNotCloseOnMouseClick() {
if (menuItem instanceof JCheckBoxMenuItem) {
String property = "CheckBoxMenuItem.doNotCloseOnMouseClick";
return SwingUtilities2.getBoolean(menuItem, property);
} else if (menuItem instanceof JRadioButtonMenuItem) {
String property = "RadioButtonMenuItem.doNotCloseOnMouseClick";
return SwingUtilities2.getBoolean(menuItem, property);
}
return false;
}
/**
* Call this method when a menu item is to be activated.
* This method handles some of the details of menu item activation
* such as clearing the selected path and messaging the
* JMenuItem's doClick() method.
*
* @param msm A MenuSelectionManager. The visual feedback and
* internal bookkeeping tasks are delegated to
* this MenuSelectionManager. If <code>null</code> is
* passed as this argument, the
* <code>MenuSelectionManager.defaultManager</code> is
* used.
* @see MenuSelectionManager
* @see JMenuItem#doClick(int)
* @since 1.4
*/
protected void doClick(MenuSelectionManager msm) {
// Auditory cue
if (! isInternalFrameSystemMenu()) {
BasicLookAndFeel.playSound(menuItem, getPropertyPrefix() +
".commandSound");
}
if (!doNotCloseOnMouseClick()) {
// Visual feedback
if (msm == null) {
msm = MenuSelectionManager.defaultManager();
}
msm.clearSelectedPath();
}
menuItem.doClick(0);
}
/**
* This is to see if the menu item in question is part of the
* system menu on an internal frame.
* The Strings that are being checked can be found in
* MetalInternalFrameTitlePaneUI.java,
* WindowsInternalFrameTitlePaneUI.java, and
* MotifInternalFrameTitlePaneUI.java.
*
* @since 1.4
*/
private boolean isInternalFrameSystemMenu() {
String actionCommand = menuItem.getActionCommand();
if ((actionCommand == "Close") ||
(actionCommand == "Minimize") ||
(actionCommand == "Restore") ||
(actionCommand == "Maximize")) {
return true;
} else {
return false;
}
}
// BasicMenuUI subclasses this.
class Handler implements MenuDragMouseListener,
MouseInputListener, PropertyChangeListener {
//
// MouseInputListener
//
public void mouseClicked(MouseEvent e) {}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
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