| gvSIG desktop 1

package org.gvsig.tools.swing.icontheme.impl;

import java.io.File;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import org.gvsig.tools.observer.ComplexObserver;

import org.gvsig.tools.observer.Observable;

import org.gvsig.tools.swing.icontheme.IconTheme;

import org.gvsig.tools.swing.icontheme.IconThemeManager;

import org.gvsig.tools.util.FolderSet;

import org.gvsig.tools.util.impl.DefaultFolderSet;

public class DefaultIconThemeManager implements IconThemeManager , ComplexObserver{

        private static IconThemeManager iconThemeManager = null;

        private IconTheme defaultTheme = null;

        private IconTheme currentTheme = null;

        private Map<String, IconTheme> themes = null;

        private FolderSet repository = null;

        public static IconThemeManager getIconThemeManager(){

                if (iconThemeManager == null){

                        iconThemeManager = new DefaultIconThemeManager();

                }

                return iconThemeManager;

        }

        public DefaultIconThemeManager() {

                this.defaultTheme = new BaseIconTheme();

                this.currentTheme = this.defaultTheme;

                this.themes = null;

                this.repository = new DefaultFolderSet();

                this.repository.addObserver(this);

        }

        public IconTheme getDefault() {

                return this.defaultTheme;

        }

        public void setCurrent(IconTheme iconTheme) {

                this.defaultTheme = iconTheme;

        }

        public IconTheme getCurrent() {

                return this.currentTheme;

        }

        public IconTheme get(String themeID) {

                return this.get(themeID);

        }

        public Iterator<IconTheme> iterator() {

                return this.getThemes().values().iterator();

        }

        public boolean contains(IconTheme theme) {

                return this.getThemes().containsValue(theme);

        }

        public boolean add(IconTheme theme) {

                this.getThemes().put(theme.getID(), theme);

                return true; 

        }

        public boolean remove(IconTheme theme) {

                return this.getThemes().remove(theme)==null ? false: true;

        }

        public void clear() {

                this.themes = null;

        }

        public FolderSet getRepository() {

                return this.repository;

        }

        public void update(Observable observable, Object notification) {

                if( observable != this.repository ) {

                        return;

                }

                this.themes = null;

        }

        private Map<String, IconTheme> getThemes() {

                if( this.themes != null ) {

                        return this.themes;

                }

                Map<String, IconTheme> themes = new HashMap<String, IconTheme>();

                File[] folders = this.repository.listFiles();

                for( int i=0; i<folders.length; i++ ) {

                        if( folders[i].isDirectory() ) {

                                FolderIconTheme theme = new FolderIconTheme(this.getDefault());

                                try {

                                        theme.load(folders[i]);

                                        themes.put(theme.getID(), theme);

                                } catch( IllegalArgumentException ex) {

                                        // Do nothing

                                }

                        }

                }

                this.themes = themes;

                return themes;

        }

}