gvSIG projects pool

package org.gvsig.online.lib.impl;

import java.util.AbstractList;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import org.apache.commons.lang3.ArrayUtils;

import org.apache.commons.lang3.StringUtils;

import org.gvsig.tools.dynobject.Tagged;

import org.gvsig.tools.dynobject.Tags;

import org.gvsig.tools.dynobject.impl.DefaultTags;

/**

 *

 * @author jjdelcerro

 */

public class OnlineCategories  extends AbstractList<String> implements List<String> {

    private final String categories_s;

    private List<Category> categories;

    private static class Category implements Tagged {        

        private final String category_s;

        private String name;

        private DefaultTags tags;

        public Category(String category) {

            this.category_s = category;

            this.parse();

        }

        private void parse() {

            this.tags = new DefaultTags();

            this.name = "unknown";

            String[] ss = StringUtils.split(this.category_s, ";");

            if( ArrayUtils.isEmpty(ss) ) {

                return;

            }

            this.name = StringUtils.strip(ss[0]);

            for (int i = 1; i < ss.length; i++) {

                String s1 = ss[i];

                if( StringUtils.isBlank(s1) ) {

                    continue;

                }

                int n = s1.indexOf("=");

                if( n<0 ) {

                    this.tags.set(StringUtils.strip(s1), null);

                } else {

                    String tagname = StringUtils.strip(StringUtils.substring(s1, 0, n));

                    String tagvalue = StringUtils.stripToNull(StringUtils.substring(s1, n+1));

                    this.tags.set(tagname, tagvalue);

                }

            }

        }

        public String getName() {

            return this.name;

        }

        @Override

        public Tags getTags() {

            return this.tags;

        }

    }

    public OnlineCategories(String categories) {

        this.categories_s = categories;

        this.categories = null;

    }

    private List<Category> getCategories() {

        if( this.categories == null ) {

            if( StringUtils.isBlank(this.categories_s) ) {

                this.categories = Collections.EMPTY_LIST;

            } else {

                try{

                    List<Category> r = new ArrayList<>();

                    String[] ss = StringUtils.split(this.categories_s, ",");

                    for (String s1 : ss) {

                        if (StringUtils.isBlank(s1)) {

                            continue;

                        }

                        Category category = new Category(s1);

                        r.add(category);

                    }

                    this.categories = r;

                } catch (Exception ex) {

                    this.categories = Collections.EMPTY_LIST;

                }

            }

        }   

        return this.categories;

    }

    @Override

    public String get(int index) {

        return this.getCategories().get(index).getName();

    }

    @Override

    public int size() {

        return this.getCategories().size();

    }

    public Tags getTags(String name) {

        for (Category category : this.getCategories()) {

            if( StringUtils.equalsIgnoreCase(name, category.getName()) ) {

                return category.getTags();

            }

        }

        return Tags.EMPTY_TAGS;

    }

}