source: src/main/java/genius/gui/uncertainty/FlatteningModel.java@ 30

package genius.gui.uncertainty;


import java.util.ArrayList;
import java.util.List;

import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;

import genius.core.repository.ProfileRepItem;
import genius.core.uncertainty.UNCERTAINTYTYPE;
import genius.core.uncertainty.UncertainPreferenceContainer;
import genius.core.uncertainty.flattening.FlattenedUtilitySpace;
import genius.core.utility.AbstractUtilitySpace;
import genius.core.utility.AdditiveUtilitySpace;
import genius.gui.negosession.ContentProxy;
import genius.gui.panels.SingleSelectionModel;
import genius.gui.panels.SubsetSelectionModel;

/**
 * @author Dimitrios Tsimpoukis
 *
 */

public class FlatteningModel {
        
        private final ProfileRepItem realProfileRepItem;
        private final SubsetSelectionModel<ProfileRepItem> multiPrefSelectionModel;
        private final SingleSelectionModel<String> strategyNamesModel;
        
        public FlatteningModel(ProfileRepItem realProfileRepItem) {
                
                this.realProfileRepItem = realProfileRepItem;
                this.multiPrefSelectionModel = new SubsetSelectionModel<ProfileRepItem>(ContentProxy.fetchDomainSpecificProfiles(realProfileRepItem.getDomain()));  // TODO need to rule out real
                this.strategyNamesModel = new SingleSelectionModel<>(getFlatteningStrategyNames());
        }
        
        private static ArrayList<String> getFlatteningStrategyNames() {
                ArrayList<String> flatteningStrategiesNames = new ArrayList<String>();
                flatteningStrategiesNames.add("Average Flattening");
                flatteningStrategiesNames.add("Weighted Average Flattening");
                flatteningStrategiesNames.add("Random Flattening");
                flatteningStrategiesNames.add("Weighted Choice Flattening");
                return flatteningStrategiesNames;
        }
        
 
        /** 
         * @return An UncertainPreferenceContainer object from the GUI selections
         */
        
        public UncertainPreferenceContainer createContainer() {
                FlattenedUtilitySpace flattenedSpace = createFlattenedSpace(multiPrefSelectionModel.getSelectedItems());
                return new UncertainPreferenceContainer((AdditiveUtilitySpace)realProfileRepItem.create(), UNCERTAINTYTYPE.PERCEIVEDUTILITY, flattenedSpace);
        }
        
        
        
        /**
         * IMPORTANT method takes as input a list of profile repository items and returns a flattened utility space.
         * @param itemsList
         * @return FlattenedUtilitySpace
         */
        
        public FlattenedUtilitySpace createFlattenedSpace(List<ProfileRepItem> itemsList) {
                
                ArrayList<AbstractUtilitySpace> uspacesList = new ArrayList<AbstractUtilitySpace>();
                for (ProfileRepItem repItem : itemsList) {
                        uspacesList.add((AbstractUtilitySpace)repItem.create());
                }
                double [] weights = getWeightsFromGUI(uspacesList.size());
                FlattenedUtilitySpace flattenedSpace = new FlattenedUtilitySpace(uspacesList , uspacesList.get(0).getDomain() , weights ,  strategyNamesModel.getSelection());  
                System.out.println(flattenedSpace.getName());
                return flattenedSpace;
        }
                
        
        /**
         * Receives the weights from the GUI for the creation of the flattened utility space
         * @param amount: the amount of preference profiles used for flattening
         * @return array of weights corresponding to the preference profiles
         */
        public double [] getWeightsFromGUI(int amount) {

                JTextField [] weightsTextField = new JTextField [amount] ;
                double [] weights = new double [amount];
                
                JPanel myPanel = new JPanel();
                
                for (int i = 0; i < amount; i++) {
                        if (i == 0) weightsTextField[i] = new JTextField("1",3);
                        else weightsTextField[i] = new JTextField("1",3);
                        myPanel.add(new JLabel("Profile " +(i+1) +" weight:"));
                        myPanel.add(weightsTextField[i]);
                }
                
                int result = JOptionPane.showConfirmDialog(null, myPanel, 
                       "Please Enter Preference Profiles Weights", JOptionPane.OK_CANCEL_OPTION);
                if (result == JOptionPane.OK_OPTION) {
                  for (int i = 0; i < amount; i++) {
                  weights[i] = Double.parseDouble(weightsTextField[i].getText());                
              }                 
                  return weights;
                } else {System.out.println("error parsing weights");
                        return getWeightsFromGUI(amount);
                }
        }

        public ProfileRepItem getRealProfileRepItem() {
                return realProfileRepItem;
        }
        
        
        public SingleSelectionModel<String> getStrategyNamesModel() {
                return strategyNamesModel;
        }

        public SubsetSelectionModel<ProfileRepItem> getMultiPrefSelectionModel() {
                return multiPrefSelectionModel;
        }

}