/
HostServicesDelegate.java
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/
HostServicesDelegate.java
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/*
* Copyright (c) 2011, 2016, 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 com.sun.javafx.application;
import java.awt.Desktop;
import java.io.File;
import java.lang.reflect.Method;
import java.net.URI;
import java.security.AccessController;
import java.security.PrivilegedActionException;
import java.security.PrivilegedExceptionAction;
import javafx.application.Application;
import netscape.javascript.JSObject;
public abstract class HostServicesDelegate {
private static Method getInstanceMeth = null;
public static HostServicesDelegate getInstance(final Application app) {
// Call into the deploy code to get the delegate class
HostServicesDelegate instance = null;
try {
instance = AccessController.doPrivileged(
(PrivilegedExceptionAction<HostServicesDelegate>) () -> {
if (getInstanceMeth == null) {
try {
final String factoryClassName =
"com.sun.deploy.uitoolkit.impl.fx.HostServicesFactory";
Class factoryClass = Class.forName(factoryClassName,
true,
HostServicesDelegate.class.getClassLoader());
getInstanceMeth = factoryClass.getMethod(
"getInstance", Application.class);
} catch (Exception ex) {
return null;
}
}
return (HostServicesDelegate)
getInstanceMeth.invoke(null, app);
}
);
} catch (PrivilegedActionException pae) {
System.err.println(pae.getException().toString());
return null;
}
if (instance == null) {
// in this case we are in standalone mode
instance = StandaloneHostService.getInstance(app);
}
return instance;
}
protected HostServicesDelegate() {
}
public abstract String getCodeBase();
public abstract String getDocumentBase();
public abstract void showDocument(String uri);
public abstract JSObject getWebContext();
// StandaloneHostService implementation
private static class StandaloneHostService extends HostServicesDelegate {
private static HostServicesDelegate instance = null;
private Class appClass = null;
public static HostServicesDelegate getInstance(Application app) {
synchronized (StandaloneHostService.class) {
if (instance == null) {
instance = new StandaloneHostService(app);
}
return instance;
}
}
private StandaloneHostService(Application app) {
appClass = app.getClass();
}
@Override
public String getCodeBase() {
// If the application was launched in standalone mode, this method
// returns the directory containing the application jar file.
// If the application is not packaged in a jar file, this method
// returns the empty string.
String theClassFile = appClass.getName();
int idx = theClassFile.lastIndexOf(".");
if (idx >= 0) {
// Strip off package name prefix in class name if exists
// getResoruce will automatically add in package name during
// lookup; see Class.getResource javadoc for more details
theClassFile = theClassFile.substring(idx + 1);
}
theClassFile = theClassFile + ".class";
String classUrlString = appClass.getResource(theClassFile).toString();
if (!classUrlString.startsWith("jar:file:") ||
classUrlString.indexOf("!") == -1) {
return "";
}
// Strip out the "jar:" and everything after and including the "!"
String urlString = classUrlString.substring(4,
classUrlString.lastIndexOf("!"));
File jarFile = null;
try {
jarFile = new File(new URI(urlString).getPath());
} catch (Exception e) {
// should not happen
}
if (jarFile != null) {
String codebase = jarFile.getParent();
if (codebase != null) {
return toURIString(codebase);
}
}
return "";
}
private String toURIString(String filePath) {
try {
return new File(filePath).toURI().toString();
} catch (Exception e) {
// should not happen
// dump stack for debug purpose
e.printStackTrace();
}
return "";
}
@Override public String getDocumentBase() {
// If the application was launched in standalone mode,
// this method returns the URI of the current directory.
return toURIString(System.getProperty("user.dir"));
}
static final String[] browsers = {"google-chrome", "firefox", "opera",
"konqueror", "mozilla"};
@Override
public void showDocument(final String uri) {
String osName = System.getProperty("os.name");
try {
if (osName.startsWith("Mac OS")) {
Desktop.getDesktop().browse(URI.create(uri));
} else if (osName.startsWith("Windows")) {
Runtime.getRuntime().exec(
"rundll32 url.dll,FileProtocolHandler " + uri);
} else { //assume Unix or Linux
String browser = null;
for (String b : browsers) {
if (browser == null && Runtime.getRuntime().exec(
new String[]{"which", b}).getInputStream().read() != -1) {
Runtime.getRuntime().exec(new String[]{browser = b, uri});
}
}
if (browser == null) {
throw new Exception("No web browser found");
}
}
} catch (Exception e) {
// should not happen
// dump stack for debug purpose
e.printStackTrace();
}
}
@Override public JSObject getWebContext() {
return null;
}
}
}