Midnight request

src/org/ilintar/study/MainScreenController.java

@@ -1,5 +1,13 @@
 package org.ilintar.study;
 
+import javafx.event.ActionEvent;
+import javafx.fxml.FXML;
+import javafx.scene.control.Button;
+import javafx.scene.layout.AnchorPane;
+import org.ilintar.study.question.*;
+import org.ilintar.study.question.event.QuestionAnsweredEvent;
+import org.ilintar.study.question.event.QuestionAnsweredEventListener;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -9,14 +17,7 @@
 import java.util.List;
 import java.util.Map;
 
-import org.ilintar.study.question.QuestionFactory;
-import org.ilintar.study.question.RadioQuestionFactory;
-
-import javafx.fxml.FXML;
-import javafx.scene.Node;
-import javafx.scene.layout.AnchorPane;
-
-public class MainScreenController {
+public class MainScreenController  implements QuestionAnsweredEventListener {
 
 	protected static Map<String, QuestionFactory> factoryMap;
 
@@ -25,18 +26,42 @@ public class MainScreenController {
 		factoryMap.put("radio", new RadioQuestionFactory());
 	}
 
-	@FXML AnchorPane mainStudy;
+	//Storage of already answered & gathered questions from current study;
+    //questions are stored as their IDs to save memory; answers are stored as Answer objects.
+	private Map<String, Answer> collectedAnswers = new HashMap<>();
 
+    @FXML AnchorPane mainStudy;
+
+    //Just a self-explanatory dummy variable for startStudy():
+    int questionCounter = 0;
+    //AND NOW FOR STH COMPLETELY DIFFERENT:
 	@FXML public void startStudy() {
+	    //Clear the pane:
 		mainStudy.getChildren().clear();
-		Node questionComponent = readQuestionFromFile(0, getClass().getResourceAsStream("StudyDetails.sqf"));
-		mainStudy.getChildren().add(questionComponent);
+		//Create a new Question object basing on the input file:
+        RadioQuestion createdQuestion = (RadioQuestion) readQuestionFromFile(questionCounter,
+                getClass().getResourceAsStream("StudyDetails.sqf"));
+		//Add the question's graphical component to the pane:
+        mainStudy.getChildren().add(createdQuestion.getRenderedQuestion());
+        //Create new button for question ending:
+        Button questionAnsweredButton = new Button("Zakończ pytanie");
+        //Add the button to the pane:
+        mainStudy.getChildren().add(questionAnsweredButton);
+        //Set button's reaction:
+        questionAnsweredButton.setOnAction((event) -> {
+            mainStudy.getChildren().remove(createdQuestion);
+            questionCounter++;
+            RadioQuestion tempQuestion = (RadioQuestion) readQuestionFromFile(questionCounter,
+                    getClass().getResourceAsStream("StudyDetails.sqf"));
+            mainStudy.getChildren().add(tempQuestion.getRenderedQuestion());
+        });
 	}
 
-	private Node readQuestionFromFile(int i, InputStream resourceAsStream) {
+	//The .sqf parser:
+	private Question readQuestionFromFile(int questionCounter, InputStream resourceAsStream) {
 		BufferedReader br = new BufferedReader(new InputStreamReader(resourceAsStream));
 		String currentLine;
-		int which = 0;
+		int counter = 0;
 		List<String> questionLines = new ArrayList<>();
 		boolean readingQuestions = false;
 		String questionType = null;
@@ -46,7 +71,7 @@ private Node readQuestionFromFile(int i, InputStream resourceAsStream) {
 					if (readingQuestions) {
 						throw new IllegalArgumentException("Invalid file format: StartQuestion without EndQuestion");
 					}
-					if (which == i) {
+					if (counter == questionCounter) {
 						readingQuestions = true;
 						String[] split = currentLine.split(" ");
 						if (split.length > 1) {
@@ -59,7 +84,7 @@ private Node readQuestionFromFile(int i, InputStream resourceAsStream) {
 							throw new IllegalArgumentException("Invalid file format: StartQuestion type=<type>");
 						}
 					} else {
-						which++;
+						counter++;
 					}
 				} else {
 					if (readingQuestions) {
@@ -80,5 +105,11 @@ private Node readQuestionFromFile(int i, InputStream resourceAsStream) {
 		}
 		return null;
 	}
+
+	//Method from the QuestionAnsweredListener interface.
+    //Puts the current question & its answer into the collectedAnswers HashMap and reads the next question.
+	public void handleQuestionAnsweredEvent(QuestionAnsweredEvent e) {
+	    this.collectedAnswers.put(e.getQuestion().getId(), e.getAnswer());
+    }
 
 }

src/org/ilintar/study/StudyDetails.sqf

@@ -4,6 +4,17 @@ First answer
 A
 Second answer
 B
+Third answer
+C
+Fourth answer
+D
+EndQuestion
+StartQuestion type=radio
+This is FUCKUP
+First answer
+A
+Second answer
+B
 Third answer modified
 C
 Fourth answer

src/org/ilintar/study/question/QuestionFactory.java

@@ -6,6 +6,6 @@
 
 public interface QuestionFactory {
 
-	public Node createQuestion(List<String> lines);
+	public Question createQuestion(List<String> lines);
 
 }

src/org/ilintar/study/question/RadioQuestion.java

@@ -0,0 +1,73 @@
+package org.ilintar.study.question;
+
+import javafx.event.Event;
+import javafx.scene.Node;
+import javafx.scene.layout.VBox;
+import org.ilintar.study.question.event.QuestionAnsweredEvent;
+import org.ilintar.study.question.event.QuestionAnsweredEventListener;
+
+import java.util.ArrayList;
+
+/**
+ * Created by RJ on 2016-12-01.
+ */
+//Class for standard radio questions.
+public class RadioQuestion  implements Question {
+    //Visible part of the question (javafx Node);
+    private VBox empiricalPart;
+    //QuestionID, specified at the constructor method:
+    private String questionID;
+    //Question's answer, initialised here & added later on:
+    private Answer answer;
+    //List of active listeners:
+    private ArrayList<QuestionAnsweredEventListener> listeners;
+
+    //Constructor method:
+    public RadioQuestion() {
+        this.listeners = new ArrayList<>();
+    }
+
+    //Adds new listener to the list:
+    @Override
+    public void addQuestionAnsweredListener(QuestionAnsweredEventListener listener) {
+        listeners.add(listener);
+    }
+
+    //Removes the listener from the list:
+    @Override
+    public void removeQuestionAnsweredListener(QuestionAnsweredEventListener listener) {
+        listeners.remove(listener);
+    }
+
+    //Create new event carrying the question itself & its answer; then return the event:
+    public QuestionAnsweredEvent emitEvent() {
+        return new QuestionAnsweredEvent(this, this.answer);
+    }
+
+    //Returns the question wrapped in a Node object (for further use by the controller);
+    @Override
+    public Node getRenderedQuestion(){
+        return this.getEmpiricalPart();
+    }
+
+    //Getter for the question's ID:
+    @Override
+    public String getId() {
+        return questionID;
+    }
+
+    //Setter for the question's answer;
+    public void setAnswer(Answer answer) {
+        this.answer = answer;
+    }
+
+    //Getter fot the graphical component:
+    public VBox getEmpiricalPart() {
+        return this.empiricalPart;
+    }
+
+    //Setter for the graphical component:
+    public void setEmpiricalPart(VBox empiricalPart) {
+        this.empiricalPart = empiricalPart;
+    }
+}

src/org/ilintar/study/question/RadioQuestionFactory.java

@@ -2,16 +2,16 @@
 
 import java.util.List;
 
-import javafx.scene.Node;
 import javafx.scene.control.Label;
 import javafx.scene.control.RadioButton;
 import javafx.scene.control.ToggleGroup;
 import javafx.scene.layout.VBox;
 
 public class RadioQuestionFactory implements QuestionFactory {
-
+//Creates Question objects basing on parsed .sqf;
+//At the first step, creates visual component of the question (a VBox object).
 	@Override
-	public Node createQuestion(List<String> lines) {
+	public Question createQuestion(List<String> lines) {
 		VBox questions = new VBox();
 		String question = lines.get(0);
 		questions.getChildren().add(new Label(question));
@@ -25,7 +25,12 @@ public Node createQuestion(List<String> lines) {
 			questions.getChildren().add(button);
 		}
 		questions.onContextMenuRequestedProperty();
-		return questions;
+		//Create new RadioQuestion object:
+		RadioQuestion createdQuestion = new RadioQuestion();
+		//Add the created VBox to the question (later available by getEmpiricalComponent()):
+		createdQuestion.setEmpiricalPart(questions);
+		//Return the whole question as a RadioQuestion object:
+		return createdQuestion;
 	}
 
 }

src/org/ilintar/study/question/event/QuestionAnsweredEvent.java

@@ -1,5 +1,8 @@
 package org.ilintar.study.question.event;
 
+import javafx.beans.NamedArg;
+import javafx.event.Event;
+import javafx.event.EventType;
 import org.ilintar.study.question.Answer;
 import org.ilintar.study.question.Question;
 

src/org/ilintar/study/question/event/QuestionAnsweredEventListener.java

@@ -1,5 +1,5 @@
 package org.ilintar.study.question.event;
 
-public class QuestionAnsweredEventListener {
-
+public interface QuestionAnsweredEventListener {
+    void handleQuestionAnsweredEvent(QuestionAnsweredEvent e);
 }