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/*
* @(#) SwingHelpUtilities.java 1.9 - last change made 10/22/04
*
* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
*
* This software is the confidential and proprietary information of Sun
* Microsystems, Inc. ("Confidential Information"). You shall not
* disclose such Confidential Information and shall use it only in
* accordance with the terms of the license agreement you entered into
* with Sun.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
* THIS SOFTWARE OR ITS DERIVATIVES.
*/
package javax.help;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.lang.reflect.Method;
import javax.swing.ImageIcon;
import javax.swing.JComponent;
import javax.swing.UIManager;
import javax.swing.LookAndFeel;
import javax.swing.UIDefaults;
import javax.swing.plaf.ComponentUI;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
/**
* Provides a number of utility functions:
*
* Support for Beans, mapping from a Bean class to its HelpSet and to
* its ID.
* Support for LAF changes.
* Support for finding localized resources.
*
* This class has no public constructor.
*
* @author Eduardo Pelegri-Llopart
* @author Roger D. Brinkley
* @version 1.9 10/22/04
*/
public class SwingHelpUtilities implements PropertyChangeListener {
private static UIDefaults uiDefaults = null;
private static SwingHelpUtilities myLAFListener = new SwingHelpUtilities();
private static String contentViewerUI = null;
static {
installUIDefaults();
}
//=========
/**
* LAF support
*/
/**
* The PropertyChange method is used to track changes to LookAndFeel
* via the "lookAndFeel" property.
*/
public void propertyChange(PropertyChangeEvent event) {
String changeName = event.getPropertyName();
if (changeName.equals("lookAndFeel")) {
installLookAndFeelDefaults();
}
}
/**
* Installs UIDefaults for Help components and installs "lookAndFeel"
* property change listener.
*/
static void installUIDefaults() {
UIDefaults table = UIManager.getLookAndFeelDefaults();
if (uiDefaults != table) {
uiDefaults = table;
UIManager.removePropertyChangeListener(myLAFListener);
installLookAndFeelDefaults();
UIManager.addPropertyChangeListener(myLAFListener);
}
}
/**
* Set the default ContentViewerUI
*
* param cvUI - full class name of the content viewer UI
*/
public static void setContentViewerUI(String cvUI) {
if (cvUI != null) {
try {
Class c = Class.forName(cvUI);
// an error will be thrown if the class doesn't exist
contentViewerUI = cvUI;
} catch (Throwable e) {
System.out.println("ContentViewerClass " + cvUI + " doesn't exist");
}
}
}
/**
* Adds look and feel constants for Help components into UIDefaults table.
*/
static void installLookAndFeelDefaults() {
LookAndFeel lnf = UIManager.getLookAndFeel();
UIDefaults table = UIManager.getLookAndFeelDefaults();
debug("installLookAndFeelDefaults - " + lnf);
if ((lnf != null) && (table != null)) {
if (lnf.getID().equals("Motif")) {
installMotifDefaults(table);
} else if (lnf.getID().equals("Windows")) {
installWindowsDefaults(table);
} else if (lnf.getID().equals("GTK")) {
installGTKDefaults(table);
} else {
// Default
installMetalDefaults(table);
}
}
debug ("verifing UIDefaults; HelpUI=" + table.getString("HelpUI"));
}
/**
* Dynamically invoke a cursor factory to get a cursor.
*/
private static Object createIcon(String factoryName,
String method) {
ClassLoader loader = HelpUtilities.class.getClassLoader();
try {
Class types[] = new Class[0];
Object args[] = new Object[0];
Class klass;
if (loader == null) {
klass = Class.forName(factoryName);
} else {
klass = loader.loadClass(factoryName);
}
Method m = klass.getMethod(method, types);
Object back = m.invoke(null, args);
return back;
} catch (Exception ex) {
return null;
}
}
static Object basicOnItemCursor = new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return createIcon("javax.help.plaf.basic.BasicCursorFactory",
"getOnItemCursor");
}
};
static Object basicDnDCursor = new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return createIcon("javax.help.plaf.basic.BasicCursorFactory",
"getDnDCursor");
}
};
static Object gtkOnItemCursor = new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return createIcon("javax.help.plaf.gtk.GTKCursorFactory",
"getOnItemCursor");
}
};
static Object gtkDnDCursor = new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return createIcon("javax.help.plaf.gtk.GTKCursorFactory",
"getDnDCursor");
}
};
/*
* Utility method that creates a UIDefaults.LazyValue that creates
* an ImageIcon for the specified image
* filename. I tried to use the similar LookAndFeel.makeIcon() method but it
* creates IconUIResource instaed of Icon Image and buttons cannot then produce
* disabled icon from it.
*/
static private Object makeBasicIcon(final String image) {
return new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return SwingHelpUtilities.getImageIcon(javax.help.plaf.basic.BasicHelpUI.class, image);
}
};
}
/**
* The basic LAF does what we need.
*/
static private void installBasicDefaults(UIDefaults table) {
String basicPackageName = "javax.help.plaf.basic.";
String basicContentViewerUI = basicPackageName + "BasicContentViewerUI";
if (contentViewerUI != null) {
basicContentViewerUI = contentViewerUI;
}
Object[] uiDefaults = {
"HelpUI", basicPackageName + "BasicHelpUI",
"HelpTOCNavigatorUI", basicPackageName + "BasicTOCNavigatorUI",
"HelpIndexNavigatorUI", basicPackageName + "BasicIndexNavigatorUI",
"HelpSearchNavigatorUI", basicPackageName + "BasicSearchNavigatorUI",
"HelpGlossaryNavigatorUI", basicPackageName + "BasicGlossaryNavigatorUI",
"HelpFavoritesNavigatorUI", basicPackageName + "BasicFavoritesNavigatorUI",
"HelpContentViewerUI", basicContentViewerUI,
"HelpDnDCursor", basicDnDCursor,
"HelpOnItemCursor", basicOnItemCursor,
"BackAction.icon", makeBasicIcon("images/Back.gif"),
"ForwardAction.icon", makeBasicIcon("images/Forward.gif"),
"PrintAction.icon", makeBasicIcon("images/Print.gif"),
"PrintSetupAction.icon", makeBasicIcon("images/PrintSetup.gif"),
"ReloadAction.icon", makeBasicIcon("images/Reload.gif"),
"FavoritesAction.icon", makeBasicIcon("images/Favorites.gif"),
"HomeAction.icon", makeBasicIcon("images/Home.gif"),
"FavoritesNav.icon", makeBasicIcon("images/FavoritesNav.gif"),
"IndexNav.icon", makeBasicIcon("images/IndexNav.gif"),
"TOCNav.icon", makeBasicIcon("images/TOCNav.gif"),
"SearchNav.icon", makeBasicIcon("images/SearchNav.gif"),
"GlossaryNav.icon", makeBasicIcon("images/GlossaryNav.gif"),
"HistoryNav.icon", makeBasicIcon("images/HistoryNav.gif"),
"SearchLow.icon", makeBasicIcon("images/SearchLow.gif"),
"SearchMedLow.icon", makeBasicIcon("images/SearchMedLow.gif"),
"SearchMed.icon", makeBasicIcon("images/SearchMed.gif"),
"SearchMedHigh.icon", makeBasicIcon("images/SearchMedHigh.gif"),
"SearchHigh.icon", makeBasicIcon("images/SearchHigh.gif")
};
table.putDefaults(uiDefaults);
}
/**
* If we had any LAF-specific classes, they would be invoked from here.
*/
static private void installMetalDefaults(UIDefaults table) {
installBasicDefaults(table);
}
static private void installWindowsDefaults(UIDefaults table) {
installBasicDefaults(table);
}
static private void installMotifDefaults(UIDefaults table) {
installBasicDefaults(table);
}
/*
* Utility method that creates a UIDefaults.LazyValue that creates
* an ImageIcon for the specified image
* filename. I tried to use the similar LookAndFeel.makeIcon() method but it
* creates IconUIResource instaed of Icon Image and buttons cannot then produce
* disabled icon from it.
*/
static private Object makeGTKIcon(final String image) {
return new UIDefaults.LazyValue() {
public Object createValue(UIDefaults table) {
return SwingHelpUtilities.getImageIcon(javax.help.plaf.gtk.GTKCursorFactory.class,
image);
}
};
}
static private void installGTKDefaults(UIDefaults table) {
String basicPackageName = "javax.help.plaf.basic.";
String gtkPackageName = "javax.help.plaf.gtk.";
String basicContentViewerUI = basicPackageName + "BasicContentViewerUI";
if (contentViewerUI != null) {
basicContentViewerUI = contentViewerUI;
}
Object[] uiDefaults = {
"HelpUI", basicPackageName + "BasicHelpUI",
"HelpTOCNavigatorUI", basicPackageName + "BasicTOCNavigatorUI",
"HelpIndexNavigatorUI", basicPackageName + "BasicIndexNavigatorUI",
"HelpSearchNavigatorUI", basicPackageName + "BasicSearchNavigatorUI",
"HelpGlossaryNavigatorUI", basicPackageName + "BasicGlossaryNavigatorUI",
"HelpFavoritesNavigatorUI", basicPackageName + "BasicFavoritesNavigatorUI",
"HelpContentViewerUI", basicContentViewerUI,
"HelpDnDCursor", gtkDnDCursor,
"HelpOnItemCursor", gtkOnItemCursor,
"BackAction.icon", makeGTKIcon("images/Back.png"),
"ForwardAction.icon", makeGTKIcon("images/Forward.png"),
"PrintAction.icon", makeGTKIcon("images/Print.png"),
"PrintSetupAction.icon", makeGTKIcon("images/PrintSetup.png"),
"ReloadAction.icon", makeGTKIcon("images/Reload.png"),
"FavoritesAction.icon", makeGTKIcon("images/Favorites.png"),
"HomeAction.icon", makeGTKIcon("images/Home.png"),
"FavoritesNav.icon", makeGTKIcon("images/FavoritesNav.png"),
"IndexNav.icon", makeGTKIcon("images/IndexNav.gif"),
"TOCNav.icon", makeGTKIcon("images/TOCNav.gif"),
"SearchNav.icon", makeGTKIcon("images/SearchNav.gif"),
"GlossaryNav.icon", makeGTKIcon("images/GlossaryNav.gif"),
"HistoryNav.icon", makeGTKIcon("images/HistoryNav.gif"),
"SearchLow.icon", makeGTKIcon("images/SearchLow.gif"),
"SearchMedLow.icon", makeGTKIcon("images/SearchMedLow.gif"),
"SearchMed.icon", makeGTKIcon("images/SearchMed.gif"),
"SearchMedHigh.icon", makeGTKIcon("images/SearchMedHigh.gif"),
"SearchHigh.icon", makeGTKIcon("images/SearchHigh.gif")
};
table.putDefaults(uiDefaults);
}
/**
* Create an Icon from a given resource.
*
* This works uisng getResourceAsStream() because several browsers do not
* correctly implement getResource().
*
* This method may change...
*/
public static ImageIcon getImageIcon(final Class baseClass,
final String image) {
if (image == null) {
return null;
}
final byte[][] buffer = new byte[1][];
try {
InputStream resource = baseClass.getResourceAsStream(image);
if (resource == null) {
return null;
}
BufferedInputStream in = new BufferedInputStream(resource);
ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
buffer[0] = new byte[1024];
int n;
while ((n = in.read(buffer[0])) > 0) {
out.write(buffer[0], 0, n);
}
in.close();
out.flush();
buffer[0] = out.toByteArray();
} catch (IOException ioe) {
System.err.println(ioe.toString());
return null;
}
if (buffer[0] == null) {
System.err.println(baseClass.getName() + "/" +
image + " not found.");
return null;
}
if (buffer[0].length == 0) {
System.err.println("warning: " + image +
" is zero-length");
return null;
}
return new ImageIcon(buffer[0]);
}
static void addPropertyChangeListener(Object object, PropertyChangeListener listener) {
try {
Class types[] = { PropertyChangeListener.class };
Object args[] = { listener };
object.getClass().getMethod("addPropertyChangeListener", types).invoke(object, args);
} catch (Exception ex) {
}
}
/**
* Debug support
*/
private static final boolean debug = false;
private static void debug(Object msg1) {
if (debug) {
System.err.println("GUIHelpUtilities: "+msg1);
}
}
}
