/*
* $Id: SwingXUtilities.java 3532 2009-10-08 16:28:18Z kleopatra $
*
* Copyright 2008 Sun Microsystems, Inc., 4150 Network Circle,
* Santa Clara, California 95054, U.S.A. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
package org.jdesktop.swingx;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Point;
import java.awt.Rectangle;
import java.awt.Window;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;
import java.io.IOException;
import java.io.StringReader;
import java.lang.reflect.Method;
import java.util.Locale;
import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.JList;
import javax.swing.JPopupMenu;
import javax.swing.KeyStroke;
import javax.swing.ListCellRenderer;
import javax.swing.ListModel;
import javax.swing.ListSelectionModel;
import javax.swing.MenuElement;
import javax.swing.RepaintManager;
import javax.swing.SwingUtilities;
import javax.swing.plaf.ComponentInputMapUIResource;
import javax.swing.plaf.UIResource;
import javax.swing.text.html.HTMLDocument;
/**
* A collection of utility methods for Swing(X) classes.
*
* <ul>
* PENDING JW: think about location of this class and/or its methods, Options:
*
* <li> move this class to the swingx utils package which already has a bunch of xxUtils
* <li> move methods between xxUtils classes as appropriate (one window/comp related util)
* <li> keep here in swingx (consistent with swingutilities in core)
* </ul>
* @author Karl George Schaefer
*/
public final class SwingXUtilities {
private SwingXUtilities() {
//does nothing
}
/**
* A helper for creating and updating key bindings for components with
* mnemonics. The {@code pressed} action will be invoked when the mnemonic
* is activated.
* <p>
* TODO establish an interface for the mnemonic properties, such as {@code
* MnemonicEnabled} and change signature to {@code public static <T extends
* JComponent & MnemonicEnabled> void updateMnemonicBinding(T c, String
* pressed)}
*
* @param c
* the component bindings to update
* @param pressed
* the name of the action in the action map to invoke when the
* mnemonic is pressed
* @throws NullPointerException
* if the component is {@code null}
*/
public static void updateMnemonicBinding(JComponent c, String pressed) {
updateMnemonicBinding(c, pressed, null);
}
/**
* A helper for creating and updating key bindings for components with
* mnemonics. The {@code pressed} action will be invoked when the mnemonic
* is activated and the {@code released} action will be invoked when the
* mnemonic is deactivated.
* <p>
* TODO establish an interface for the mnemonic properties, such as {@code
* MnemonicEnabled} and change signature to {@code public static <T extends
* JComponent & MnemonicEnabled> void updateMnemonicBinding(T c, String
* pressed, String released)}
*
* @param c
* the component bindings to update
* @param pressed
* the name of the action in the action map to invoke when the
* mnemonic is pressed
* @param released
* the name of the action in the action map to invoke when the
* mnemonic is released (if the action is a toggle style, then
* this parameter should be {@code null})
* @throws NullPointerException
* if the component is {@code null}
*/
public static void updateMnemonicBinding(JComponent c, String pressed, String released) {
Class<?> clazz = c.getClass();
int m = -1;
try {
Method mtd = clazz.getMethod("getMnemonic");
m = (Integer) mtd.invoke(c);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new IllegalArgumentException("unable to access mnemonic", e);
}
InputMap map = SwingUtilities.getUIInputMap(c,
JComponent.WHEN_IN_FOCUSED_WINDOW);
if (m != 0) {
if (map == null) {
map = new ComponentInputMapUIResource(c);
SwingUtilities.replaceUIInputMap(c,
JComponent.WHEN_IN_FOCUSED_WINDOW, map);
}
map.clear();
//TODO is ALT_MASK right for all platforms?
map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, false),
pressed);
map.put(KeyStroke.getKeyStroke(m, InputEvent.ALT_MASK, true),
released);
map.put(KeyStroke.getKeyStroke(m, 0, true), released);
} else {
if (map != null) {
map.clear();
}
}
}
private static Component[] getChildren(Component c) {
Component[] children = null;
if (c instanceof MenuElement) {
MenuElement[] elements = ((MenuElement) c).getSubElements();
children = new Component[elements.length];
for (int i = 0; i < elements.length; i++) {
children[i] = elements[i].getComponent();
}
} else if (c instanceof Container) {
children = ((Container) c).getComponents();
}
return children;
}
/**
* Enables or disables of the components in the tree starting with {@code c}.
*
* @param c
* the starting component
* @param enabled
* {@code true} if the component is to enabled; {@code false} otherwise
*/
public static void setComponentTreeEnabled(Component c, boolean enabled) {
c.setEnabled(enabled);
Component[] children = getChildren(c);
if (children != null) {
for(int i = 0; i < children.length; i++) {
setComponentTreeEnabled(children[i], enabled);
}
}
}
/**
* Sets the locale for an entire component hierarchy to the specified
* locale.
*
* @param c
* the starting component
* @param locale
* the locale to set
*/
public static void setComponentTreeLocale(Component c, Locale locale) {
c.setLocale(locale);
Component[] children = getChildren(c);
if (children != null) {
for(int i = 0; i < children.length; i++) {
setComponentTreeLocale(children[i], locale);
}
}
}
/**
* Sets the background for an entire component hierarchy to the specified
* color.
*
* @param c
* the starting component
* @param color
* the color to set
*/
public static void setComponentTreeBackground(Component c, Color color) {
c.setBackground(color);
Component[] children = getChildren(c);
if (children != null) {
for(int i = 0; i < children.length; i++) {
setComponentTreeBackground(children[i], color);
}
}
}
/**
* Sets the foreground for an entire component hierarchy to the specified
* color.
*
* @param c
* the starting component
* @param color
* the color to set
*/
public static void setComponentTreeForeground(Component c, Color color) {
c.setForeground(color);
Component[] children = getChildren(c);
if (children != null) {
for(int i = 0; i < children.length; i++) {
setComponentTreeForeground(children[i], color);
}
}
}
/**
* Sets the font for an entire component hierarchy to the specified font.
*
* @param c
* the starting component
* @param font
* the font to set
*/
public static void setComponentTreeFont(Component c, Font font) {
c.setFont(font);
Component[] children = getChildren(c);
if (children != null) {
for(int i = 0; i < children.length; i++) {
setComponentTreeFont(children[i], font);
}
}
}
private static String STYLESHEET =
"body { margin-top: 0; margin-bottom: 0; margin-left: 0; margin-right: 0;"
+ " font-family: %s; font-size: %dpt; }"
+ "a, p, li { margin-top: 0; margin-bottom: 0; margin-left: 0;"
+ " margin-right: 0; font-family: %s; font-size: %dpt; }";
/**
* Sets the font used for HTML displays to the specified font. Components
* that display HTML do not necessarily honor font properties, since the
* HTML document can override these values. Calling {@code setHtmlFont}
* after the data is set will force the HTML display to use the font
* specified to this method.
*
* @param doc
* the HTML document to update
* @param font
* the font to use
* @throws NullPointerException
* if any parameter is {@code null}
*/
public static void setHtmlFont(HTMLDocument doc, Font font) {
String stylesheet = String.format(STYLESHEET, font.getName(),
font.getSize(), font.getName(), font.getSize());
try {
doc.getStyleSheet().loadRules(new StringReader(stylesheet), null);
} catch (IOException e) {
//this should never happen with our sheet
throw new IllegalStateException(e);
}
}
/**
* Updates the componentTreeUI of all top-level windows of the
* current application.
*
*/
public static void updateAllComponentTreeUIs() {
// for (Frame frame : Frame.getFrames()) {
// updateAllComponentTreeUIs(frame);
// }
// JW: updated to new 1.6 api - returns all windows, owned and ownerless
for (Window window: Window.getWindows()) {
SwingUtilities.updateComponentTreeUI(window);
}
}
/**
* Updates the componentTreeUI of the given window and all its
* owned windows, recursively.
*
*
* @param window the window to update
*/
public static void updateAllComponentTreeUIs(Window window) {
SwingUtilities.updateComponentTreeUI(window);
for (Window owned : window.getOwnedWindows()) {
updateAllComponentTreeUIs(owned);
}
}
/**
* An improved version of
* {@link SwingUtilities#getAncestorOfClass(Class, Component)}. This method
* traverses {@code JPopupMenu} invoker and uses generics to return an
* appropriately typed object.
*
* @param <T>
* the type of ancestor to find
* @param clazz
* the class instance of the ancestor to find
* @param c
* the component to start the search from
* @return an ancestor of the correct type or {@code null} if no such
* ancestor exists. This method also returns {@code null} if any
* parameter is {@code null}.
*/
@SuppressWarnings("unchecked")
public static <T> T getAncestor(Class<T> clazz, Component c) {
if (clazz == null || c == null) {
return null;
}
Component parent = c.getParent();
while (parent != null && !(clazz.isInstance(parent))) {
parent = parent instanceof JPopupMenu
? ((JPopupMenu) parent).getInvoker() : parent.getParent();
}
return (T) parent;
}
/**
* Returns whether the component is part of the parent's
* container hierarchy. If a parent in the chain is of type
* JPopupMenu, the parent chain of its invoker is walked.
*
* @param focusOwner
* @param parent
* @return true if the component is contained under the parent's
* hierarchy, coping with JPopupMenus.
*/
public static boolean isDescendingFrom(Component focusOwner, Component parent) {
while (focusOwner != null) {
if (focusOwner instanceof JPopupMenu) {
focusOwner = ((JPopupMenu) focusOwner).getInvoker();
if (focusOwner == null) {
return false;
}
}
if (focusOwner == parent) {
return true;
}
focusOwner = focusOwner.getParent();
}
return false;
}
/**
* Obtains a {@code TranslucentRepaintManager} from the specified manager.
* If the current manager is a {@code TranslucentRepaintManager} or a
* {@code ForwardingRepaintManager} that contains a {@code
* TranslucentRepaintManager}, then the passed in manager is returned.
* Otherwise a new repaint manager is created and returned.
*
* @param delegate
* the current repaint manager
* @return a non-{@code null} {@code TranslucentRepaintManager}
* @throws NullPointerException if {@code delegate} is {@code null}
*/
static RepaintManager getTranslucentRepaintManager(RepaintManager delegate) {
RepaintManager manager = delegate;
while (manager != null && !manager.getClass().isAnnotationPresent(TranslucentRepaintManager.class)) {
if (manager instanceof ForwardingRepaintManager) {
manager = ((ForwardingRepaintManager) manager).getDelegateManager();
} else {
manager = null;
}
}
return manager == null ? new RepaintManagerX(delegate) : delegate;
}
/**
* Checks and returns whether the given property should be replaced
* by the UI's default value.
*
* @param property the property to check.
* @return true if the given property should be replaced by the UI's
* default value, false otherwise.
*/
public static boolean isUIInstallable(Object property) {
return (property == null) || (property instanceof UIResource);
}
//---- methods c&p'ed from SwingUtilities2 to reduce dependencies on sun packages
/**
* Updates lead and anchor selection index without changing the selection.
*
* Note: this is c&p'ed from SwingUtilities2 to not have any direct
* dependency.
*
* @param selectionModel the selection model to change lead/anchor
* @param lead the lead selection index
* @param anchor the anchor selectin index
*/
public static void setLeadAnchorWithoutSelection(
ListSelectionModel selectionModel, int lead, int anchor) {
if (anchor == -1) {
anchor = lead;
}
if (lead == -1) {
selectionModel.setAnchorSelectionIndex(-1);
selectionModel.setLeadSelectionIndex(-1);
} else {
if (selectionModel.isSelectedIndex(lead))
selectionModel.addSelectionInterval(lead, lead);
else {
selectionModel.removeSelectionInterval(lead, lead);
}
selectionModel.setAnchorSelectionIndex(anchor);
}
}
public static boolean shouldIgnore(MouseEvent mouseEvent,
JComponent component) {
return ((component == null) || (!(component.isEnabled()))
|| (!(SwingUtilities.isLeftMouseButton(mouseEvent)))
|| (mouseEvent.isConsumed()));
}
public static int loc2IndexFileList(JList list, Point point) {
int i = list.locationToIndex(point);
if (i != -1) {
Object localObject = list
.getClientProperty("List.isFileList");
if ((localObject instanceof Boolean)
&& (((Boolean) localObject).booleanValue())
// PENDING JW: this isn't aware of sorting/filtering - fix!
&& (!(pointIsInActualBounds(list, i, point)))) {
i = -1;
}
}
return i;
}
// PENDING JW: this isn't aware of sorting/filtering - fix!
private static boolean pointIsInActualBounds(JList list, int index,
Point point) {
ListCellRenderer renderer = list.getCellRenderer();
ListModel model = list.getModel();
Object element = model.getElementAt(index);
Component comp = renderer.getListCellRendererComponent(list, element,
index, false, false);
Dimension prefSize = comp.getPreferredSize();
Rectangle cellBounds = list.getCellBounds(index, index);
if (!(comp.getComponentOrientation().isLeftToRight())) {
cellBounds.x += cellBounds.width - prefSize.width;
}
cellBounds.width = prefSize.width;
return cellBounds.contains(point);
}
public static void adjustFocus(JComponent component) {
if ((!(component.hasFocus())) && (component.isRequestFocusEnabled()))
component.requestFocus();
}
public static int convertModifiersToDropAction(int modifiers,
int sourcActions) {
// PENDING JW: c'p from a decompiled SunDragSourceContextPeer
// PENDING JW: haha ... completely readable, right ;-)
int i = 0;
switch (modifiers & 0xC0) {
case 192:
i = 1073741824;
break;
case 128:
i = 1;
break;
case 64:
i = 2;
break;
default:
if ((sourcActions & 0x2) != 0) {
i = 2;
break;
}
if ((sourcActions & 0x1) != 0) {
i = 1;
break;
}
if ((sourcActions & 0x40000000) == 0)
break;
i = 1073741824;
}
// label88:
return (i & sourcActions);
}
}