ChartFrame

ChartFrame.java

/*
 * Copyright (c) 2014, 2015, Formation Tablettes. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 *  Please contact us or visit www.britweb.fr if you need additional information or have any questions.
 */
package com.logic;

import com.entity.Proposal;
import com.entity.Question;
import com.entity.Quiz;
import java.awt.BorderLayout;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.io.File;
import java.util.List;
import javafx.application.Platform;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.embed.swing.JFXPanel;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.chart.BarChart;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.chart.XYChart.Data;
import javafx.scene.text.Text;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javafx.beans.value.*;
import javafx.geometry.Bounds;
import javafx.geometry.Pos;
import javafx.scene.*;
import javafx.scene.chart.*;
import javafx.scene.control.Label;
import javafx.scene.layout.*;
import javafx.scene.paint.Color;
import javafx.scene.shape.*;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
 *
 * @author Florian
 */
public class ChartFrame extends JFrame {
    private final JFXPanel fxPanel = new JFXPanel();
    private Quiz quiz;
    private Question question;
    private String questionName;
    private String nbQuestion;
    private final String normal = "#34495e";
    private final String good = "#2ecc71";
    private final String wrong = "#e74c3c";
    private final CategoryAxis xAxis = new CategoryAxis();
    private final NumberAxis yAxis = new NumberAxis(0d, new Integer(QuizProcess.getInstance().getNbLearnersOnQuiz()).doubleValue() + 0.1d, 1d);
    private final BarChart<String, Number> barChart = new BarChart<>(xAxis, yAxis);
    private final XYChart.Series<String, Number> series = new XYChart.Series<>();
    
    public ChartFrame(int idQuiz, int idQuestion, String nbQuestion){
        quiz = Quizzes.getInstance().getQuizById(idQuiz);
        question = quiz.getQuestionById(idQuestion);
        questionName = nbQuestion + question.getQuestion();
        initSwingComponents();
        initFxComponents();
    }

    private void initSwingComponents(){
        JPanel mainPanel = new JPanel(new BorderLayout());
        mainPanel.add(fxPanel, BorderLayout.CENTER);
        this.add(mainPanel);
        this.setTitle("Statistiques");
        this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
        this.setSize(800,800);
        this.addWindowListener( new WindowAdapter() {
            @Override
            public void windowClosing(WindowEvent we) {
                QuizProcess.getInstance().statsOpened = false;
            }
        } );
    }

    private void initFxComponents(){

        Platform.runLater(() -> {
            barChart.setLegendVisible(false);
            barChart.setAnimated(false);
            barChart.setBarGap(0.0);
            xAxis.setLabel("Réponse");       
            yAxis.setLabel("Nombre de fois répondue");
            updateData();     
            final Scene scene = new Scene(barChart);
            barChart.setData(FXCollections.observableArrayList(series));
//            barChart.getData().add(series);
            fxPanel.setScene(scene);
//            barChart.getStylesheets().add(getClass().getResource("/config/colors.css").toExternalForm());
        });

    }
    
    public void setIdQuiz(int idQuiz){        
        quiz = Quizzes.getInstance().getQuizById(idQuiz);
    }
    
    public void setIdQuestion(int idQuestion){
        question = quiz.getQuestionById(idQuestion);   
        questionName = nbQuestion + question.getQuestion();     
    }
    
    public void setNbQuestion(String nbQuestion){
        this.nbQuestion = nbQuestion;
    }
    

    public void updateData(){
        Platform.runLater(() -> {
            barChart.setTitle(questionName);
            int count = 0;
            boolean temp = false;
            String proposal; 
//            clearLabels();
            series.getData().clear();
//            barChart.getData().clear();
            List<Integer> listGoodAnswers = QuizProcess.getInstance().getGoodAnswersForQuestion(quiz.getId(), question.getId());
            for(Proposal p : question.getListProposals()){
                count++;
                for(int id : listGoodAnswers){
                    if(p.getId() == id){
                        temp = true;
                        break;
                    }
                }
                final boolean goodAnswer = temp;
                final int nbAnswersForProposal = Answers.getInstance().getNbAnswersForProposal(quiz.getId(), question.getId(), p.getId());
//                proposal = p.getProposal();                               
//                StringBuilder sb = new StringBuilder(proposal);
//                int i = 0;
//                while ((i = sb.indexOf(" ", i + 30)) != -1)
//                    sb.replace(i, i + 1, "\n");
                final XYChart.Data<String, Number> data = new XYChart.Data(Integer.toString(count), nbAnswersForProposal);
                data.nodeProperty().addListener(new ChangeListener<Node>() {
                    @Override
                    public void changed(ObservableValue<? extends Node> ov, Node oldNode, final Node node) {
                        if (node != null) {
                            if(goodAnswer)
                                setNodeStyle(data, good);
                            else
                                setNodeStyle(data, wrong);
                            if(nbAnswersForProposal > 0)
                                displayLabelForData(data);
                        } 
                    }
                });
                series.getData().add(data);
            }
        });
    }

    /** Change color of bar if value of i is <5 then red, if >5 then green if i>8 then blue */
    private void setNodeStyle(XYChart.Data<String, Number> data, String color) {
        Node node = data.getNode();
        node.setStyle("-fx-bar-fill: " + color + ";");
//        if (data.getYValue().intValue() > 8) {
//            node.setStyle("-fx-bar-fill: -fx-exceeded;");
//        } else if (data.getYValue().intValue() > 5) {
//            node.setStyle("-fx-bar-fill: -fx-achieved;");
//        } else {
//            node.setStyle("-fx-bar-fill: -fx-not-achieved;");
//        }
    }
    
    
//    private void clearLabels(){
//        barChart
//    }

    
    
    
    
    /** places a text label with a bar's value above a bar node for a given XYChart.Data */
    private void displayLabelForData(XYChart.Data<String, Number> data) {
        final Node node = data.getNode();
        final Text dataText = new Text(data.getYValue() + "");
        node.parentProperty().addListener(new ChangeListener<Parent>() {
          @Override public void changed(ObservableValue<? extends Parent> ov, Parent oldParent, Parent parent) {
            Group parentGroup = (Group) parent;
            parentGroup.getChildren().add(dataText);
          }
        });

        node.boundsInParentProperty().addListener(new ChangeListener<Bounds>() {
          @Override public void changed(ObservableValue<? extends Bounds> ov, Bounds oldBounds, Bounds bounds) {
            dataText.setLayoutX(
              Math.round(
                bounds.getMinX() + bounds.getWidth() / 2 - dataText.prefWidth(-1) / 2
              )
            );
            dataText.setLayoutY(
              Math.round(
                bounds.getMinY() - dataText.prefHeight(-1) * 0.5
              )
            );
          }
        });
    }
    
}

http://stackoverflow.com/questions/34286062/how-to-clear-text-added-in-a-javafx-barchart