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Viewing changes to src/org/herac/tuxguitar/gui/scale/MusicScaleManager.java

  • Committer: Bazaar Package Importer
  • Author(s): Philippe Coval
  • Date: 2007-02-04 01:41:23 UTC
  • Revision ID: james.westby@ubuntu.com-20070204014123-9pv7okph0iaiqkvw
Tags: upstream-0.9.1
Import upstream version 0.9.1

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src/org/herac/tuxguitar/gui/scale/MusicScaleManager.java
 
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package org.herac.tuxguitar.gui.scale;
 
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import java.io.File;
 
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import java.io.IOException;
 
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import java.util.ArrayList;
 
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import java.util.Iterator;
 
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import java.util.List;
 
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import javax.xml.parsers.ParserConfigurationException;
 
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import org.herac.tuxguitar.gui.scale.xml.ScaleReader;
 
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import org.herac.tuxguitar.gui.util.TuxGuitarFileUtils;
 
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import org.herac.tuxguitar.song.models.MusicScale;
 
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import org.xml.sax.SAXException;
 
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public class MusicScaleManager {
 
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        private static final String[] KEY_NAMES = new String[]{"C","C#","D","D#","E","F","F#","G","G#","A","A#","B"};
 
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        private static final String KEY_SEPARATOR = ",";
 
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        public static final int NONE_SELECTION = -1;
 
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        private List scales;
 
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        private MusicScale scale;
 
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        private int selectionIndex;
 
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        private int selectionKey;
 
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        public MusicScaleManager(){
 
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                this.scales = new ArrayList();
 
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                this.scale = new MusicScale();          
 
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                this.selectionKey = 0;
 
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                this.selectionIndex = NONE_SELECTION;
 
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                this.loadScales();
 
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        }
 
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        public MusicScale getScale() {
 
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                return scale;
 
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        }               
 
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        public void selectScale(int index,int key){
 
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                if(index == NONE_SELECTION){
 
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                        getScale().clear();
 
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                }
 
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                else if(index >= 0 && index < scales.size()){           
 
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                        getScale().clear();
 
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                        ScaleInfo info = (ScaleInfo)scales.get(index);
 
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                        String[] keys = info.getKeys().split(KEY_SEPARATOR);                                            
 
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                        for (int i = 0; i < keys.length; i ++){
 
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                                int note = (Integer.parseInt(keys[i]) - 1);
 
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                                if(note >= 0 && note < 12){
 
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                                        getScale().setNote(note,true);
 
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                                }
 
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                        }                                       
 
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                        getScale().setKey(key);
 
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                }
 
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                this.selectionIndex = index;
 
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                this.selectionKey = key;
 
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        }
 
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        public String[] getScaleNames(){
 
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                String[] names = new String[this.scales.size()];
 
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                Iterator it = this.scales.iterator();           
 
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                for(int i = 0;i < scales.size();i ++){
 
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                        ScaleInfo info = (ScaleInfo)scales.get(i);
 
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                        names[i] = info.getName();
 
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                }
 
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                return names;
 
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        }
 
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        public String[] getKeyNames(){
 
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                return KEY_NAMES;
 
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        }
 
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        public int getSelectionIndex() {
 
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                return selectionIndex;
 
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        }
 
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        public int getSelectionKey() {
 
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                return selectionKey;
 
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        }
 
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        private void loadScales(){
 
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                try{
 
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                        new ScaleReader().loadScales(scales,getScalesFileName());
 
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                } catch (SAXException e) {
 
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                        e.printStackTrace();
 
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                } catch (ParserConfigurationException e) {
 
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                        e.printStackTrace();
 
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                } catch (IOException e) {
 
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                        e.printStackTrace();
 
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                } catch (Exception e) {
 
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                        e.printStackTrace();
 
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                } catch (Error e) {
 
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                        e.printStackTrace();
 
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                }
 
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        }
 
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    private String getScalesFileName(){
 
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        return TuxGuitarFileUtils.SCALES_PREFIX + File.separator + "scales.xml";
 
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    }   
 
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}