/*******************************************************************************
* Copyright (c) 2012-2015 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.util.ArrayList;
import java.util.Arrays;
import java.util.Comparator;
import org.eclipse.core.expressions.IEvaluationContext;
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.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.help.IToc;
import org.eclipse.help.ITopic;
import org.eclipse.help.IUAElement;
import org.eclipse.jface.preference.IPreferenceStore;
import org.eclipse.linuxtools.internal.javadocs.ui.preferences.PreferenceConstants;
/**
* The Toc class generates the root topic (i.e. the "Javadoc documents")
* heading which will be clickable in the Eclipse help system.
*/
public class JavaDocToc implements IToc {
@Override
public String getLabel() {
return "Javadoc documents";
}
@Override
public String getHref() {
return JavaDocPlugin.PLUGIN_ID + "/"; //$NON-NLS-1$
}
@Override
public boolean isEnabled(IEvaluationContext context) {
// Should always be true, other Eclipse will not find the help resource
return true;
}
@Override
public IUAElement[] getChildren() {
return getTopics();
}
@Override
public ITopic[] getTopics() {
try {
// Finds the path to the javadoc directory from the preference
// store, and gets all children directories.
ArrayList<ITopic> topics = new ArrayList<>();
IPreferenceStore ps = JavaDocPlugin.getDefault()
.getPreferenceStore();
IPath javadocLocation = new Path(
ps.getString(PreferenceConstants.JAVADOCS_DIRECTORY));
IFileSystem fs = EFS.getLocalFileSystem();
IFileStore htmlDir = fs.getStore(javadocLocation);
IFileStore[] files = htmlDir.childStores(EFS.NONE, null);
Arrays.sort(files, new Comparator<IFileStore>() {
@Override
public int compare(IFileStore arg0, IFileStore arg1) {
return (arg0.getName().compareToIgnoreCase(arg1.getName()));
}
});
// Loops through all children directories within the javadoc
// directory and generates topics for them.
for (IFileStore file: files) {
String name = file.fetchInfo().getName();
if (fs.getStore(
javadocLocation.append(name)) //$NON-NLS-1$
.fetchInfo().exists() && fs.getStore(
javadocLocation.append(name + "/index.html")) //$NON-NLS-1$
.fetchInfo().exists() ) {
ITopic topic = new JavaDocTopic(name);
topics.add(topic);
}
}
// Returns an array of the generated topics
ITopic[] retval = new ITopic[topics.size()];
return topics.toArray(retval);
}
catch (CoreException e) {
}
// If no child directories exist, the root "Javadoc documents" help
// resource will not be displayed in the help system until there are
// child directories present.
return null;
}
@Override
public ITopic getTopic(String href) {
if (href == null){
return null;
}
// The Eclipse help system appends and extra "/" to the beginning of
// every path so we need to strip it before we can do a search.
ITopic[] topicList = this.getTopics();
for (ITopic iTopic : topicList) {
if (iTopic.getHref().equals(href.substring(1)) ||
iTopic.getHref().equals(href)){
return iTopic;
}
}
return null;
}
}