/**
* Copyright (c) 2016 committers of YAKINDU 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:
* committers of YAKINDU - initial API and implementation
*
*/
package org.yakindu.sct.examples.wizard.pages;
import java.text.Collator;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.eclipse.jface.viewers.ITreeContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.yakindu.sct.examples.wizard.service.ExampleData;
import com.google.common.collect.Lists;
/**
*
* @author t00manysecretss
*
*/
public class ExampleContentProvider implements ITreeContentProvider {
public static class Category {
private String name;
private List<ExampleData> children;;
public Category(String name) {
this.name = name;
children = new ArrayList<>();
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<ExampleData> getChildren() {
return children;
}
}
private Map<String, Category> categories;
public ExampleContentProvider() {
categories = new LinkedHashMap<>();
}
@SuppressWarnings("unchecked")
@Override
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
categories.clear();
if (newInput != null)
groupCategories((List<ExampleData>) newInput);
}
protected void groupCategories(List<ExampleData> newInput) {
for (ExampleData exampleData : newInput) {
String[] category = exampleData.getCategory();
for (String string : category) {
if (!categories.containsKey(string)) {
categories.put(string, new Category(string));
}
categories.get(string).getChildren().add(exampleData);
}
}
}
@Override
public Object[] getElements(Object inputElement) {
List<Category> values = Lists.newArrayList();
values.addAll(categories.values());
Collections.sort(values, new Comparator<Category>() {
@Override
public int compare(Category o1, Category o2) {
return Collator.getInstance().compare(o1.getName(), o2.getName());
}
});
return values.toArray();
}
@Override
public Object[] getChildren(Object parentElement) {
return ((Category) parentElement).getChildren().toArray();
}
@Override
public Object getParent(Object element) {
return categories.get((((ExampleData) element).getCategory()));
}
@Override
public boolean hasChildren(Object element) {
return element instanceof Category;
}
@Override
public void dispose() {
categories.clear();
}
}