path: root/src/de/fhswf/in/inf/se/notepadMinusMinus/view/MainViewController.java

package de.fhswf.in.inf.se.notepadMinusMinus.view;

import java.io.File;
import java.math.BigDecimal;
import java.math.RoundingMode;

import de.fhswf.in.inf.se.notepadMinusMinus.Main;
import de.fhswf.in.inf.se.notepadMinusMinus.model.Grade;
import de.fhswf.in.inf.se.notepadMinusMinus.util.OverLimitIntegerStringConverter;
import javafx.application.Platform;
import javafx.collections.ListChangeListener.Change;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.Label;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.ComboBoxTableCell;
import javafx.scene.control.cell.TextFieldTableCell;
import javafx.stage.FileChooser;

/**
 * TODO Add comment here
 *
 * @author $Author: $
 * @version $Revision: $, $Date: $ UTC
 */
public class MainViewController
{
   @FXML
   private TableView<Grade> gradeTable;

   @FXML
   private TableColumn<Grade, Integer> semesterColumn;

   @FXML
   private TableColumn<Grade, String> modulenameColumn;

   @FXML
   private TableColumn<Grade, Integer> ectsColumn;

   @FXML
   private TableColumn<Grade, BigDecimal> gradeColumn;

   @FXML
   private TableColumn<Grade, Integer> attemptColumn;

   @FXML
   private Label ectsSumLabel;

   @FXML
   private Label averageGradeLabel;

   @FXML
   private Button deleteButton;

   @FXML
   private ComboBox<BigDecimal> colloquiumComboBox;

   @FXML
   private ComboBox<BigDecimal> thesisComboBox;

   private Main main;

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void initialize()
   {
      semesterColumn.setCellValueFactory(
            cellData -> cellData.getValue().semesterProperty().asObject());
      semesterColumn.setCellFactory(TextFieldTableCell
            .forTableColumn(new OverLimitIntegerStringConverter(1)));
      semesterColumn.setOnEditCommit(data -> {
         data.getRowValue().setSemester(data.getNewValue());
      });

      modulenameColumn.setCellValueFactory(
            cellData -> cellData.getValue().modulenameProperty());
      modulenameColumn.setCellFactory(TextFieldTableCell.forTableColumn());
      modulenameColumn.setOnEditCommit(data -> {
         data.getRowValue().setModulename(data.getNewValue().trim());
      });

      ectsColumn.setCellValueFactory(
            cellData -> cellData.getValue().ectsProperty().asObject());
      ectsColumn.setCellFactory(TextFieldTableCell
            .forTableColumn(new OverLimitIntegerStringConverter(0)));
      ectsColumn.setOnEditCommit(data -> {
         data.getRowValue().setEcts(data.getNewValue());
      });

      gradeColumn.setCellValueFactory(
            cellData -> cellData.getValue().gradeProperty());
      gradeColumn.setCellFactory(
            ComboBoxTableCell.forTableColumn(Grade.gradeValuesProperty()));
      gradeColumn.setOnEditCommit(data -> {
         data.getRowValue().setGrade(data.getNewValue());
      });

      attemptColumn.setCellValueFactory(
            cellData -> cellData.getValue().attemptProperty().asObject());
      attemptColumn.setCellFactory(TextFieldTableCell
            .forTableColumn(new OverLimitIntegerStringConverter(1)));
      attemptColumn.setOnEditCommit(data -> {
         data.getRowValue().setAttempt(data.getNewValue());
      });

      deleteButton.disableProperty().bind(gradeTable.getSelectionModel()
            .selectedIndexProperty().lessThan(0));

      thesisComboBox.setItems(Grade.gradeValuesProperty());
      colloquiumComboBox.setItems(Grade.gradeValuesProperty());
   }

   /**
    * TODO Add method comment here
    *
    * @param main
    */
   public void setMain(Main main)
   {
      this.main = main;
      gradeTable.setItems(main.getGradesObject().gradesProperty());

      thesisComboBox.valueProperty()
            .bindBidirectional(main.getGradesObject().colloquiumProperty());
      colloquiumComboBox.valueProperty()
            .bindBidirectional(main.getGradesObject().thesisProperty());

      gradeTable.getItems().addListener((Change<? extends Grade> change) -> {
         ectsSumLabel.setText("0");
         averageGradeLabel.setText("0.0");
         int sumEcts = 0;
         BigDecimal gradesSumWeighted = BigDecimal.ZERO;
         for (Grade grade : gradeTable.getItems())
         {
            if (grade.getGrade().compareTo(BigDecimal.ZERO) != 0)
            {
               sumEcts += grade.getEcts();
               gradesSumWeighted = gradesSumWeighted.add(grade.getGrade()
                     .multiply(new BigDecimal(grade.getEcts())));
            }
         }
         if (sumEcts > 0)
         {
            ectsSumLabel.setText(String.valueOf(sumEcts));
            averageGradeLabel.setText(gradesSumWeighted
                  .divide(new BigDecimal(sumEcts), 2, RoundingMode.HALF_UP)
                  .toString());
         }
      });
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleNewValue()
   {
      Grade grade = new Grade();
      gradeTable.getItems().add(grade);
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleDeleteValue()
   {
      Grade delete = gradeTable.getSelectionModel().getSelectedItem();

      if (delete != null)
      {
         gradeTable.getItems().remove(delete);
      }
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleNew()
   {
      if (main != null)
      {
         gradeTable.getItems().clear();
         main.setOpenFile(null);
      }
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleOpen()
   {
      FileChooser fileChooser = new FileChooser();

      // Set extension filter
      FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter(
            "XML files (*.xml)", "*.xml");
      fileChooser.getExtensionFilters().add(extFilter);

      // Set initial Directory to a good value
      if (main != null && main.getGradesFilePath() != null)
      {
         fileChooser
               .setInitialDirectory(main.getGradesFilePath().getParentFile());
      }
      else
      {
         String userDirectoryString = System.getProperty("user.home");
         File userDirectory = new File(userDirectoryString);
         fileChooser.setInitialDirectory(userDirectory);
      }

      // Show save file dialog
      File file = fileChooser.showOpenDialog(main.getPrimaryStage());

      if (file != null)
      {
         main.loadGradesFromFile(file);
      }
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleSave()
   {
      if (main.getOpenFile() == null)
      {
         handleSaveAs();
      }
      else
      {
         if (main != null)
         {
            main.saveGradesToFile(main.getOpenFile());
         }
      }
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleSaveAs()
   {
      FileChooser fileChooser = new FileChooser();

      // Only show XML files.
      FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter(
            "XML files (*.xml)", "*.xml");
      fileChooser.getExtensionFilters().add(extFilter);

      // Set initial Directory to a good value
      if (main != null && main.getGradesFilePath() != null)
      {
         fileChooser
               .setInitialDirectory(main.getGradesFilePath().getParentFile());
      }
      else
      {
         String userDirectoryString = System.getProperty("user.home");
         File userDirectory = new File(userDirectoryString);
         fileChooser.setInitialDirectory(userDirectory);
      }

      File file = fileChooser.showSaveDialog(main.getPrimaryStage());

      if (file != null)
      {
         // Set the correct file ending
         if (!file.getPath().endsWith(".xml"))
         {
            file = new File(file.getPath() + ".xml");
         }
         main.saveGradesToFile(file);
      }
   }

   /**
    * TODO Add method comment here
    *
    */
   @FXML
   private void handleExit()
   {
      Platform.exit();
   }
}