JDK8/Java8源码在线阅读
/*
* Copyright (c) 1997, 2013, 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
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*/
package javax.swing.plaf.basic;
import sun.swing.SwingUtilities2;
import java.awt.*;
import java.awt.event.*;
import javax.accessibility.AccessibleContext;
import javax.swing.*;
import javax.swing.plaf.*;
import javax.swing.event.InternalFrameEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyVetoException;
import sun.swing.DefaultLookup;
import static sun.swing.SwingUtilities2.AA_TEXT_PROPERTY_KEY;
/**
* The class that manages a basic title bar
* <p>
* <strong>Warning:</strong>
* Serialized objects of this class will not be compatible with
* future Swing releases. The current serialization support is
* appropriate for short term storage or RMI between applications running
* the same version of Swing. As of 1.4, support for long term storage
* of all JavaBeans™
* has been added to the <code>java.beans</code> package.
* Please see {@link java.beans.XMLEncoder}.
*
* @author David Kloba
* @author Steve Wilson
*/
public class BasicInternalFrameTitlePane extends JComponent
{
protected JMenuBar menuBar;
protected JButton iconButton;
protected JButton maxButton;
protected JButton closeButton;
protected JMenu windowMenu;
protected JInternalFrame frame;
protected Color selectedTitleColor;
protected Color selectedTextColor;
protected Color notSelectedTitleColor;
protected Color notSelectedTextColor;
protected Icon maxIcon;
protected Icon minIcon;
protected Icon iconIcon;
protected Icon closeIcon;
protected PropertyChangeListener propertyChangeListener;
protected Action closeAction;
protected Action maximizeAction;
protected Action iconifyAction;
protected Action restoreAction;
protected Action moveAction;
protected Action sizeAction;
// These constants are not used in JDK code
protected static final String CLOSE_CMD =
UIManager.getString("InternalFrameTitlePane.closeButtonText");
protected static final String ICONIFY_CMD =
UIManager.getString("InternalFrameTitlePane.minimizeButtonText");
protected static final String RESTORE_CMD =
UIManager.getString("InternalFrameTitlePane.restoreButtonText");
protected static final String MAXIMIZE_CMD =
UIManager.getString("InternalFrameTitlePane.maximizeButtonText");
protected static final String MOVE_CMD =
UIManager.getString("InternalFrameTitlePane.moveButtonText");
protected static final String SIZE_CMD =
UIManager.getString("InternalFrameTitlePane.sizeButtonText");
private String closeButtonToolTip;
private String iconButtonToolTip;
private String restoreButtonToolTip;
private String maxButtonToolTip;
private Handler handler;
public BasicInternalFrameTitlePane(JInternalFrame f) {
frame = f;
installTitlePane();
}
protected void installTitlePane() {
installDefaults();
installListeners();
createActions();
enableActions();
createActionMap();
setLayout(createLayout());
assembleSystemMenu();
createButtons();
addSubComponents();
updateProperties();
}
private void updateProperties() {
final Object aaTextInfo = frame.getClientProperty(AA_TEXT_PROPERTY_KEY);
putClientProperty(AA_TEXT_PROPERTY_KEY, aaTextInfo);
}
protected void addSubComponents() {
add(menuBar);
add(iconButton);
add(maxButton);
add(closeButton);
}
protected void createActions() {
maximizeAction = new MaximizeAction();
iconifyAction = new IconifyAction();
closeAction = new CloseAction();
restoreAction = new RestoreAction();
moveAction = new MoveAction();
sizeAction = new SizeAction();
}
ActionMap createActionMap() {
ActionMap map = new ActionMapUIResource();
map.put("showSystemMenu", new ShowSystemMenuAction(true));
map.put("hideSystemMenu", new ShowSystemMenuAction(false));
return map;
}
protected void installListeners() {
if( propertyChangeListener == null ) {
propertyChangeListener = createPropertyChangeListener();
}
frame.addPropertyChangeListener(propertyChangeListener);
}
protected void uninstallListeners() {
frame.removePropertyChangeListener(propertyChangeListener);
handler = null;
}
protected void installDefaults() {
maxIcon = UIManager.getIcon("InternalFrame.maximizeIcon");
minIcon = UIManager.getIcon("InternalFrame.minimizeIcon");
iconIcon = UIManager.getIcon("InternalFrame.iconifyIcon");
closeIcon = UIManager.getIcon("InternalFrame.closeIcon");
selectedTitleColor = UIManager.getColor("InternalFrame.activeTitleBackground");
selectedTextColor = UIManager.getColor("InternalFrame.activeTitleForeground");
notSelectedTitleColor = UIManager.getColor("InternalFrame.inactiveTitleBackground");
notSelectedTextColor = UIManager.getColor("InternalFrame.inactiveTitleForeground");
setFont(UIManager.getFont("InternalFrame.titleFont"));
closeButtonToolTip =
UIManager.getString("InternalFrame.closeButtonToolTip");
iconButtonToolTip =
UIManager.getString("InternalFrame.iconButtonToolTip");
restoreButtonToolTip =
UIManager.getString("InternalFrame.restoreButtonToolTip");
maxButtonToolTip =
UIManager.getString("InternalFrame.maxButtonToolTip");
}
protected void uninstallDefaults() {
}
protected void createButtons() {
iconButton = new NoFocusButton(
"InternalFrameTitlePane.iconifyButtonAccessibleName",
"InternalFrameTitlePane.iconifyButtonOpacity");
iconButton.addActionListener(iconifyAction);
if (iconButtonToolTip != null && iconButtonToolTip.length() != 0) {
iconButton.setToolTipText(iconButtonToolTip);
}
maxButton = new NoFocusButton(
"InternalFrameTitlePane.maximizeButtonAccessibleName",
"InternalFrameTitlePane.maximizeButtonOpacity");
maxButton.addActionListener(maximizeAction);
closeButton = new NoFocusButton(
"InternalFrameTitlePane.closeButtonAccessibleName",
"InternalFrameTitlePane.closeButtonOpacity");
closeButton.addActionListener(closeAction);
if (closeButtonToolTip != null && closeButtonToolTip.length() != 0) {
closeButton.setToolTipText(closeButtonToolTip);
}
setButtonIcons();
}
protected void setButtonIcons() {
if(frame.isIcon()) {
if (minIcon != null) {
iconButton.setIcon(minIcon);
}
if (restoreButtonToolTip != null &&
restoreButtonToolTip.length() != 0) {
iconButton.setToolTipText(restoreButtonToolTip);
}
if (maxIcon != null) {
maxButton.setIcon(maxIcon);
}
if (maxButtonToolTip != null && maxButtonToolTip.length() != 0) {
maxButton.setToolTipText(maxButtonToolTip);
}
} else if (frame.isMaximum()) {
if (iconIcon != null) {
iconButton.setIcon(iconIcon);
}
if (iconButtonToolTip != null && iconButtonToolTip.length() != 0) {
iconButton.setToolTipText(iconButtonToolTip);
}
if (minIcon != null) {
maxButton.setIcon(minIcon);
}
if (restoreButtonToolTip != null &&
restoreButtonToolTip.length() != 0) {
maxButton.setToolTipText(restoreButtonToolTip);
}
} else {
if (iconIcon != null) {
iconButton.setIcon(iconIcon);
}
if (iconButtonToolTip != null && iconButtonToolTip.length() != 0) {
iconButton.setToolTipText(iconButtonToolTip);
}
if (maxIcon != null) {
maxButton.setIcon(maxIcon);
}
if (maxButtonToolTip != null && maxButtonToolTip.length() != 0) {
maxButton.setToolTipText(maxButtonToolTip);
}
}
if (closeIcon != null) {
closeButton.setIcon(closeIcon);
}
}
protected void assembleSystemMenu() {
menuBar = createSystemMenuBar();
windowMenu = createSystemMenu();
menuBar.add(windowMenu);
addSystemMenuItems(windowMenu);
enableActions();
}
protected void addSystemMenuItems(JMenu systemMenu) {
JMenuItem mi = systemMenu.add(restoreAction);
mi.setMnemonic(getButtonMnemonic("restore"));
mi = systemMenu.add(moveAction);
mi.setMnemonic(getButtonMnemonic("move"));
mi = systemMenu.add(sizeAction);
mi.setMnemonic(getButtonMnemonic("size"));
mi = systemMenu.add(iconifyAction);
mi.setMnemonic(getButtonMnemonic("minimize"));
mi = systemMenu.add(maximizeAction);
mi.setMnemonic(getButtonMnemonic("maximize"));
systemMenu.add(new JSeparator());
mi = systemMenu.add(closeAction);
mi.setMnemonic(getButtonMnemonic("close"));
}
private static int getButtonMnemonic(String button) {
try {
return Integer.parseInt(UIManager.getString(
"InternalFrameTitlePane." + button + "Button.mnemonic"));
} catch (NumberFormatException e) {
return -1;
}
}
protected JMenu createSystemMenu() {
return new JMenu(" ");
}
protected JMenuBar createSystemMenuBar() {
menuBar = new SystemMenuBar();
menuBar.setBorderPainted(false);
return menuBar;
}
protected void showSystemMenu(){
// windowMenu.setPopupMenuVisible(true);
// windowMenu.setVisible(true);
windowMenu.doClick();
}
public void paintComponent(Graphics g) {
paintTitleBackground(g);
if(frame.getTitle() != null) {
boolean isSelected = frame.isSelected();
Font f = g.getFont();
g.setFont(getFont());
if(isSelected)
g.setColor(selectedTextColor);
else
g.setColor(notSelectedTextColor);
// Center text vertically.
FontMetrics fm = SwingUtilities2.getFontMetrics(frame, g);
int baseline = (getHeight() + fm.getAscent() - fm.getLeading() -
fm.getDescent()) / 2;
int titleX;
Rectangle r = new Rectangle(0, 0, 0, 0);
if (frame.isIconifiable()) r = iconButton.getBounds();
else if (frame.isMaximizable()) r = maxButton.getBounds();
else if (frame.isClosable()) r = closeButton.getBounds();
int titleW;
String title = frame.getTitle();
if( BasicGraphicsUtils.isLeftToRight(frame) ) {
if (r.x == 0) r.x = frame.getWidth()-frame.getInsets().right;
titleX = menuBar.getX() + menuBar.getWidth() + 2;
titleW = r.x - titleX - 3;
title = getTitle(frame.getTitle(), fm, titleW);
} else {
titleX = menuBar.getX() - 2
- SwingUtilities2.stringWidth(frame,fm,title);
}
SwingUtilities2.drawString(frame, g, title, titleX, baseline);
g.setFont(f);
}
}
/**
* Invoked from paintComponent.
* Paints the background of the titlepane. All text and icons will
* then be rendered on top of this background.
* @param g the graphics to use to render the background
* @since 1.4
*/
protected void paintTitleBackground(Graphics g) {
boolean isSelected = frame.isSelected();
if(isSelected)
g.setColor(selectedTitleColor);
else
g.setColor(notSelectedTitleColor);
g.fillRect(0, 0, getWidth(), getHeight());
}
protected String getTitle(String text, FontMetrics fm, int availTextWidth) {
return SwingUtilities2.clipStringIfNecessary(
frame, fm, text, availTextWidth);
}
/**
* Post a WINDOW_CLOSING-like event to the frame, so that it can
* be treated like a regular Frame.
*/
protected void postClosingEvent(JInternalFrame frame) {
InternalFrameEvent e = new InternalFrameEvent(
frame, InternalFrameEvent.INTERNAL_FRAME_CLOSING);
// Try posting event, unless there's a SecurityManager.
try {
Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(e);
} catch (SecurityException se) {
frame.dispatchEvent(e);
}
}
protected void enableActions() {
restoreAction.setEnabled(frame.isMaximum() || frame.isIcon());
maximizeAction.setEnabled(
(frame.isMaximizable() && !frame.isMaximum() && !frame.isIcon()) ||
(frame.isMaximizable() && frame.isIcon()));
iconifyAction.setEnabled(frame.isIconifiable() && !frame.isIcon());
closeAction.setEnabled(frame.isClosable());
sizeAction.setEnabled(false);
moveAction.setEnabled(false);
}
private Handler getHandler() {
if (handler == null) {
handler = new Handler();
}
return handler;
}
protected PropertyChangeListener createPropertyChangeListener() {
return getHandler();
}
protected LayoutManager createLayout() {
return getHandler();
}
private class Handler implements LayoutManager, PropertyChangeListener {
//
// PropertyChangeListener
//
public void propertyChange(PropertyChangeEvent evt) {
String prop = evt.getPropertyName();
if (prop == JInternalFrame.IS_SELECTED_PROPERTY) {
repaint();
return;
}
if (prop == JInternalFrame.IS_ICON_PROPERTY ||
prop == JInternalFrame.IS_MAXIMUM_PROPERTY) {
setButtonIcons();
enableActions();
return;
}
if ("closable" == prop) {
if (evt.getNewValue() == Boolean.TRUE) {
add(closeButton);
} else {
remove(closeButton);
}
} else if ("maximizable" == prop) {
if (evt.getNewValue() == Boolean.TRUE) {
add(maxButton);
} else {
remove(maxButton);
}
} else if ("iconable" == prop) {
if (evt.getNewValue() == Boolean.TRUE) {
add(iconButton);
} else {
remove(iconButton);
}
}
enableActions();
revalidate();
repaint();
}
//
// LayoutManager
//
public void addLayoutComponent(String name, Component c) {}
public void removeLayoutComponent(Component c) {}
public Dimension preferredLayoutSize(Container c) {
return minimumLayoutSize(c);
}
public Dimension minimumLayoutSize(Container c) {
// Calculate width.
int width = 22;
if (frame.isClosable()) {
width += 19;
}
if (frame.isMaximizable()) {
width += 19;
}
if (frame.isIconifiable()) {
width += 19;
}
FontMetrics fm = frame.getFontMetrics(getFont());
String frameTitle = frame.getTitle();
int title_w = frameTitle != null ? SwingUtilities2.stringWidth(
frame, fm, frameTitle) : 0;
int title_length = frameTitle != null ? frameTitle.length() : 0;
// Leave room for three characters in the title.
if (title_length > 3) {
int subtitle_w = SwingUtilities2.stringWidth(
frame, fm, frameTitle.substring(0, 3) + "...");
width += (title_w < subtitle_w) ? title_w : subtitle_w;
} else {
width += title_w;
}
// Calculate height.
Icon icon = frame.getFrameIcon();
int fontHeight = fm.getHeight();
fontHeight += 2;
int iconHeight = 0;
if (icon != null) {
// SystemMenuBar forces the icon to be 16x16 or less.
iconHeight = Math.min(icon.getIconHeight(), 16);
}
iconHeight += 2;
int height = Math.max( fontHeight, iconHeight );
Dimension dim = new Dimension(width, height);
// Take into account the border insets if any.
if (getBorder() != null) {
Insets insets = getBorder().getBorderInsets(c);
dim.height += insets.top + insets.bottom;
dim.width += insets.left + insets.right;
}
return dim;
}
public void layoutContainer(Container c) {
boolean leftToRight = BasicGraphicsUtils.isLeftToRight(frame);
int w = getWidth();
int h = getHeight();
int x;
int buttonHeight = closeButton.getIcon().getIconHeight();
Icon icon = frame.getFrameIcon();
int iconHeight = 0;
if (icon != null) {
iconHeight = icon.getIconHeight();
}
x = (leftToRight) ? 2 : w - 16 - 2;
menuBar.setBounds(x, (h - iconHeight) / 2, 16, 16);
x = (leftToRight) ? w - 16 - 2 : 2;
if (frame.isClosable()) {
closeButton.setBounds(x, (h - buttonHeight) / 2, 16, 14);
x += (leftToRight) ? -(16 + 2) : 16 + 2;
}
if (frame.isMaximizable()) {
maxButton.setBounds(x, (h - buttonHeight) / 2, 16, 14);
x += (leftToRight) ? -(16 + 2) : 16 + 2;
}
if (frame.isIconifiable()) {
iconButton.setBounds(x, (h - buttonHeight) / 2, 16, 14);
}
}
}
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class PropertyChangeHandler implements PropertyChangeListener {
// 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.
public void propertyChange(PropertyChangeEvent evt) {
getHandler().propertyChange(evt);
}
}
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class TitlePaneLayout implements LayoutManager {
// 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.
public void addLayoutComponent(String name, Component c) {
getHandler().addLayoutComponent(name, c);
}
public void removeLayoutComponent(Component c) {
getHandler().removeLayoutComponent(c);
}
public Dimension preferredLayoutSize(Container c) {
return getHandler().preferredLayoutSize(c);
}
public Dimension minimumLayoutSize(Container c) {
return getHandler().minimumLayoutSize(c);
}
public void layoutContainer(Container c) {
getHandler().layoutContainer(c);
}
}
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class CloseAction extends AbstractAction {
public CloseAction() {
super(UIManager.getString(
"InternalFrameTitlePane.closeButtonText"));
}
public void actionPerformed(ActionEvent e) {
if(frame.isClosable()) {
frame.doDefaultCloseAction();
}
}
} // end CloseAction
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class MaximizeAction extends AbstractAction {
public MaximizeAction() {
super(UIManager.getString(
"InternalFrameTitlePane.maximizeButtonText"));
}
public void actionPerformed(ActionEvent evt) {
if (frame.isMaximizable()) {
if (frame.isMaximum() && frame.isIcon()) {
try {
frame.setIcon(false);
} catch (PropertyVetoException e) { }
} else if (!frame.isMaximum()) {
try {
frame.setMaximum(true);
} catch (PropertyVetoException e) { }
} else {
try {
frame.setMaximum(false);
} catch (PropertyVetoException e) { }
}
}
}
}
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class IconifyAction extends AbstractAction {
public IconifyAction() {
super(UIManager.getString(
"InternalFrameTitlePane.minimizeButtonText"));
}
public void actionPerformed(ActionEvent e) {
if(frame.isIconifiable()) {
if(!frame.isIcon()) {
try { frame.setIcon(true); } catch (PropertyVetoException e1) { }
} else{
try { frame.setIcon(false); } catch (PropertyVetoException e1) { }
}
}
}
} // end IconifyAction
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class RestoreAction extends AbstractAction {
public RestoreAction() {
super(UIManager.getString(
"InternalFrameTitlePane.restoreButtonText"));
}
public void actionPerformed(ActionEvent evt) {
if (frame.isMaximizable() && frame.isMaximum() && frame.isIcon()) {
try {
frame.setIcon(false);
} catch (PropertyVetoException e) { }
} else if (frame.isMaximizable() && frame.isMaximum()) {
try {
frame.setMaximum(false);
} catch (PropertyVetoException e) { }
} else if (frame.isIconifiable() && frame.isIcon()) {
try {
frame.setIcon(false);
} catch (PropertyVetoException e) { }
}
}
}
/**
* This class should be treated as a "protected" inner class.
* Instantiate it only within subclasses of <code>Foo</code>.
*/
public class MoveAction extends AbstractAction {
public MoveAction() {
super(UIManager.getString(
"InternalFrameTitlePane.moveButtonText"));
}
public void actionPerformed(ActionEvent e) {
// This action is currently undefined
}
} // end MoveAction
/*
* Handles showing and hiding the system menu.
*/
private class ShowSystemMenuAction extends AbstractAction {
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