~ubuntu-branches/ubuntu/oneiric/tuxguitar/oneiric

package org.herac.tuxguitar.gui.scale;

 

import java.io.File;

import java.io.IOException;

import java.util.ArrayList;

import java.util.Iterator;

import java.util.List;

 

import javax.xml.parsers.ParserConfigurationException;

 

import org.herac.tuxguitar.gui.scale.xml.ScaleReader;

import org.herac.tuxguitar.gui.util.TuxGuitarFileUtils;

import org.herac.tuxguitar.song.models.MusicScale;

import org.xml.sax.SAXException;

 

public class MusicScaleManager {

        private static final String[] KEY_NAMES = new String[]{"C","C#","D","D#","E","F","F#","G","G#","A","A#","B"};

        

        private static final String KEY_SEPARATOR = ",";

        

        public static final int NONE_SELECTION = -1;

        

        private List scales;

        

        private MusicScale scale;

        

        private int selectionIndex;

        

        private int selectionKey;

        

        public MusicScaleManager(){

                this.scales = new ArrayList();

                this.scale = new MusicScale();          

                this.selectionKey = 0;

                this.selectionIndex = NONE_SELECTION;

                this.loadScales();

        }

                        

        public MusicScale getScale() {

                return scale;

        }               

 

        public void selectScale(int index,int key){

                if(index == NONE_SELECTION){

                        getScale().clear();

                }

                else if(index >= 0 && index < scales.size()){           

                        getScale().clear();

                        ScaleInfo info = (ScaleInfo)scales.get(index);

                        String[] keys = info.getKeys().split(KEY_SEPARATOR);                                            

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

                                int note = (Integer.parseInt(keys[i]) - 1);

                                if(note >= 0 && note < 12){

                                        getScale().setNote(note,true);

                                }

                        }                                       

                        getScale().setKey(key);

                }

                this.selectionIndex = index;

                this.selectionKey = key;

        }

        

        public String[] getScaleNames(){

                String[] names = new String[this.scales.size()];

                                

                Iterator it = this.scales.iterator();           

                for(int i = 0;i < scales.size();i ++){

                        ScaleInfo info = (ScaleInfo)scales.get(i);

                        names[i] = info.getName();

                }

                

                return names;

        }

 

        public String[] getKeyNames(){

                return KEY_NAMES;

        }

        

        public int getSelectionIndex() {

                return selectionIndex;

        }

 

        public int getSelectionKey() {

                return selectionKey;

        }

 

        private void loadScales(){

                try{

                        new ScaleReader().loadScales(scales,getScalesFileName());

                } catch (SAXException e) {

                        e.printStackTrace();

                } catch (ParserConfigurationException e) {

                        e.printStackTrace();

                } catch (IOException e) {

                        e.printStackTrace();

                } catch (Exception e) {

                        e.printStackTrace();

                } catch (Error e) {

                        e.printStackTrace();

                }

        }

        

    private String getScalesFileName(){

        return TuxGuitarFileUtils.SCALES_PREFIX + File.separator + "scales.xml";

    }   

 

 

}