/*******************************************************************************
* Copyright (c) 2011-2015 Red Hat Inc. and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Red Hat Inc. - Initial implementation
* Eric Williams <ericwill@redhat.com> - modification for Javadocs
*******************************************************************************/
package org.eclipse.linuxtools.internal.javadocs.ui;
import java.io.InputStream;
import java.util.Locale;
import org.eclipse.core.filesystem.EFS;
import org.eclipse.core.filesystem.IFileStore;
import org.eclipse.core.filesystem.IFileSystem;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.ILog;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.Path;
import org.eclipse.help.IHelpContentProducer;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.linuxtools.internal.javadocs.ui.preferences.PreferenceConstants;
/**
* The content producer for the plugin. Provides an input stream to the Eclipse
* help system in order to render HTML in the help browser.
*/
public class JavaDocContentProducer implements IHelpContentProducer {
/**
* Returns an input stream for the requested file. This method will be
* called by the Eclipse help system to serve up content to the internal
* web server, which will then be displayed in the help browser.
*
* @param pluginID the plugin ID as set in the manifest
* @param href the link to the file generated by the help system
* @param locale the locale of the file requested (as set in
* JavaDocTocProvider)
* @return the input stream to the file requested
*/
@Override
public InputStream getInputStream(String pluginID, String href,
Locale locale) {
// Eclipse help system adds parameters to the href but this breaks our
// path creation so we just strip them.
if (href.contains("?")) { //$NON-NLS-1$
href = href.substring(0, href.indexOf('?'));
}
// Eclipse help system appends additional plugin ID, so we strip this
// as well.
String pathToFile = href.replace("org.eclipse.linuxtools.javadocs", ""); //$NON-NLS-1$ //$NON-NLS-2$
// Get path from preferences store, attempt to open input stream to the
// file being requested.
IPreferenceStore ps = JavaDocPlugin.getDefault().getPreferenceStore();
IPath javadocLocation = new Path(ps.getString(PreferenceConstants.
JAVADOCS_DIRECTORY)).append(pathToFile);
IFileSystem fs = EFS.getLocalFileSystem();
IFileStore localLocation = fs.getStore(javadocLocation);
InputStream stream = null;
if (!localLocation.fetchInfo().exists()) {
return null;
}
try {
stream = localLocation.openInputStream(EFS.NONE, new
NullProgressMonitor());
}
catch (CoreException e) {
ILog eLog = JavaDocPlugin.getDefault().getLog();
eLog.log(e.getStatus());
}
return stream;
}
}