Added configuration validation

voting-booth-gui/build.gradle

@@ -62,6 +62,9 @@ dependencies {
     // Jar that creates barcodes
     compile group: 'net.sourceforge.barbecue', name: 'barbecue', version: '1.5-beta1'
 
+    // Json configuration parsing for the test
+    testCompile group: 'org.json', name: 'json', version: '20160810'
+
     testCompile 'junit:junit:4.+'
 
     runtime 'org.codehaus.groovy:groovy:2.4.+'

voting-booth-gui/src/main/java/meerkat/voting/gui/configuration/VotingBoothConfiguration.java

@@ -8,5 +8,28 @@ import meerkat.protobuf.BallotQuestionUIElementOuterClass;
 public class VotingBoothConfiguration {
     public BallotQuestionUIElementOuterClass.BallotQuestionUIElement NameSelectionQuestion;
     public BallotQuestionUIElementOuterClass.BallotQuestionUIElement NameSelectionByPictureQuestion;
+
+    /**
+     * Checks that the configuration that have been given is valud
+     * @return true if the configuration was valid else false
+     */
+    public boolean IsConfigurationValid(){
+        // check that both the ballot questions really exists
+        if (this.NameSelectionByPictureQuestion == null || this.NameSelectionQuestion == null) {
+            return false;
+        }
+        // check that both the questions answers exists
+        if (this.NameSelectionQuestion.getAnswers().getAnswers().getAnswersList() == null ||
+                this.NameSelectionByPictureQuestion.getAnswers().getAnswers().getAnswersList() == null) {
+            return false;
+        }
+        // check that both the types of the questions answers are supported
+        if (BallotQuestionUIElementOuterClass.ValueType.forNumber(NameSelectionByPictureQuestion.getAnswers().getAnswersType()) == null ||
+                BallotQuestionUIElementOuterClass.ValueType.forNumber(NameSelectionQuestion.getAnswers().getAnswersType()) == null ){
+            return false;
+        }
+        return true;
+    }
+
 }
 

voting-booth-gui/src/main/java/meerkat/voting/gui/managment/ChainBuilder.java

@@ -51,6 +51,8 @@ public class ChainBuilder {
         WelcomeSplashLoader welcomeSplashLoader = new WelcomeSplashLoader(primaryStage, configuration);
         TwoWayNode welcomeSplashController = welcomeSplashLoader.GetWelcomeSplash();
         welcomeSplashController.SetVotersBallot(votersBallot);
+        // Calling the update method for the splash controller to run its graphics changes
+        welcomeSplashController.UpdateNode();
 
         StraightChannelSectionLoader straightChannelSectionLoader = new StraightChannelSectionLoader(primaryStage, configuration);
         TwoWayNode straightChannelSectionController = straightChannelSectionLoader.GetStraightChannelSection();

voting-booth-gui/src/main/java/meerkat/voting/gui/panels/welcome_splash/WelcomeSplashController.java

@@ -1,6 +1,7 @@
 package meerkat.voting.gui.panels.welcome_splash;
 
 import javafx.fxml.FXML;
+import javafx.scene.control.Label;
 import javafx.scene.input.MouseEvent;
 import meerkat.voting.gui.managment.TwoWayNode;
 import org.slf4j.Logger;
@@ -13,6 +14,10 @@ import org.slf4j.LoggerFactory;
 public class WelcomeSplashController extends TwoWayNode {
 
     private final Logger logger = LoggerFactory.getLogger(WelcomeSplashController.class);
+    private final String INVALID_CONFIGURATION_ERROR_TEXT = "The given configuration is invalid please run this voting booth with different configuraiton.";
+
+    @FXML
+    private Label ErrorPanel;
 
     @FXML
     private void StartVotingProcess(MouseEvent mousePressed) {
@@ -25,6 +30,18 @@ public class WelcomeSplashController extends TwoWayNode {
 
     @Override
     public void UpdateNode() {
-        // There is no questions relevant to this panel so this method does nothing
+        if (this.config == null || !this.config.IsConfigurationValid()){
+            RepresentErrorToVoter(INVALID_CONFIGURATION_ERROR_TEXT);
+        }
     }
+
+    /**
+     * Represents the given string to user in ErrorLabel
+     * @param message is the error string to represent to the user
+     */
+    private void RepresentErrorToVoter(String message) {
+        ErrorPanel.setText(message);
+        this.currentStage.show();
+    }
+
 }

voting-booth-gui/src/main/resources/view/welcome_splash_screen.fxml

@@ -95,5 +95,10 @@
             </GridPane>
          </children>
       </GridPane>
+      <BorderPane prefHeight="200.0" prefWidth="200.0" GridPane.columnIndex="1" GridPane.rowIndex="3">
+         <center>
+            <Label fx:id="ErrorPanel" maxHeight="30.0" maxWidth="500.0" minHeight="30.0" minWidth="500.0" prefHeight="30.0" prefWidth="500.0" BorderPane.alignment="CENTER" />
+         </center>
+      </BorderPane>
    </children>
 </GridPane>