show state and allow exit based on state

src/main/java/ninja/javafx/smartcsv/fx/SmartCSV.java

@@ -27,9 +27,12 @@
 package ninja.javafx.smartcsv.fx;
 
 import javafx.application.Application;
+import javafx.application.Platform;
+import javafx.event.EventHandler;
 import javafx.scene.Parent;
 import javafx.scene.Scene;
 import javafx.stage.Stage;
+import javafx.stage.WindowEvent;
 import org.springframework.context.annotation.*;
 import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
 
@@ -46,6 +49,8 @@ public class SmartCSV extends Application {
         String name = appContext.getEnvironment().getProperty("application.name");
         String version = appContext.getEnvironment().getProperty("application.version");
 
+        Platform.setImplicitExit(false);
+
         try {
             showUI(primaryStage, name, version);
         } catch (Exception e) {
@@ -80,6 +85,12 @@ public class SmartCSV extends Application {
         primaryStage.setTitle(String.format("%s %s", name, version));
         primaryStage.show();
         primaryStage.setMaximized(true);
+
+        primaryStage.setOnCloseRequest(event -> {
+            if (!smartCVSController.canExit()) {
+                event.consume();
+            }
+        });
     }
 
 }

src/main/java/ninja/javafx/smartcsv/fx/SmartCSVController.java

@@ -27,6 +27,12 @@
 package ninja.javafx.smartcsv.fx;
 
 import javafx.application.Platform;
+import javafx.beans.InvalidationListener;
+import javafx.beans.Observable;
+import javafx.beans.property.BooleanProperty;
+import javafx.beans.property.SimpleBooleanProperty;
+import javafx.beans.value.ChangeListener;
+import javafx.beans.value.ObservableValue;
 import javafx.concurrent.Service;
 import javafx.concurrent.Task;
 import javafx.event.ActionEvent;
@@ -53,6 +59,7 @@ import org.springframework.stereotype.Component;
 
 import java.io.File;
 import java.net.URL;
+import java.util.Optional;
 import java.util.ResourceBundle;
 
 import static java.lang.Math.max;
@@ -81,7 +88,13 @@ public class SmartCSVController extends FXMLController {
     private BorderPane applicationPane;
 
     @FXML
-    private Label stateline;
+    private Label csvName;
+
+    @FXML
+    private Label configurationName;
+
+    @FXML
+    private Label stateName;
 
     @FXML
     private ListView errorList;
@@ -100,6 +113,8 @@ public class SmartCSVController extends FXMLController {
     private CSVModel model;
     private TableView<CSVRow> tableView;
     private File lastDirectory;
+    private BooleanProperty fileChanged = new SimpleBooleanProperty(true);
+    private ResourceBundle resourceBundle;
 
 
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -108,12 +123,13 @@ public class SmartCSVController extends FXMLController {
 
     @Override
     public void initialize(URL location, ResourceBundle resourceBundle) {
+        this.resourceBundle = resourceBundle;
+        saveCSVService.setWriter(csvFileWriter);
         cellFactory = new ValidationCellFactory(resourceBundle);
-        stateline.setVisible(false);
         errorList.setCellFactory(param -> new ValidationErrorListCell(resourceBundle));
-        errorList.getSelectionModel().selectedItemProperty().addListener(
+        errorList.getSelectionModel().selectedItemProperty().addListener(observable -> scrollToError());
-                observable -> scrollToError()
+        fileChanged.addListener(observable -> setStateName());
-        );
+        setStateName();
     }
 
 
@@ -134,12 +150,12 @@ public class SmartCSVController extends FXMLController {
 
     @FXML
     public void openCsv(ActionEvent actionEvent) {
-        loadFile(csvLoader, "CSV files (*.csv)", "*.csv", "Open CSV");
+        loadFile(csvLoader, "CSV files (*.csv)", "*.csv", "Open CSV", csvName);
     }
 
     @FXML
     public void openConfig(ActionEvent actionEvent) {
-        loadFile(validationLoader, "JSON files (*.json)", "*.json", "Open Validation Configuration");
+        loadFile(validationLoader, "JSON files (*.json)", "*.json", "Open Validation Configuration", configurationName);
     }
 
     @FXML
@@ -154,8 +170,10 @@ public class SmartCSVController extends FXMLController {
 
     @FXML
     public void close(ActionEvent actionEvent) {
+        if (canExit()) {
             Platform.exit();
         }
+    }
 
     @FXML
     public void about(ActionEvent actionEvent) {
@@ -176,13 +194,30 @@ public class SmartCSVController extends FXMLController {
 
 
         alert.showAndWait();
-
     }
+
+    public boolean canExit() {
+        boolean canExit = true;
+        if (model != null && fileChanged.get()) {
+            Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
+            alert.setTitle(resourceBundle.getString("dialog.exit.title"));
+            alert.setHeaderText(resourceBundle.getString("dialog.exit.header.text"));
+            alert.setContentText(resourceBundle.getString("dialog.exit.text"));
+
+            Optional<ButtonType> result = alert.showAndWait();
+            if (result.get() != ButtonType.OK){
+                canExit = false;
+            }
+        }
+
+        return canExit;
+    }
+
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     // private methods
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
-    private void loadFile(FileReader fileReader, String filterText, String filter, String title) {
+    private void loadFile(FileReader fileReader, String filterText, String filter, String title, Label fileLabel) {
         final FileChooser fileChooser = new FileChooser();
 
         //Set extension filter
@@ -197,6 +232,7 @@ public class SmartCSVController extends FXMLController {
         //Show open file dialog
         final File file = fileChooser.showOpenDialog(applicationPane.getScene().getWindow());
         if (file != null) {
+            loadCSVService.setFileLabel(fileLabel);
             loadCSVService.setFile(file);
             loadCSVService.setFileReader(fileReader);
             loadCSVService.restart();
@@ -220,6 +256,7 @@ public class SmartCSVController extends FXMLController {
             final File file = fileChooser.showOpenDialog(applicationPane.getScene().getWindow());
             if (file != null) {
                 model.setFilepath(file.getAbsolutePath());
+                saveCSVService.setWriter(writer);
                 saveCSVService.restart();
             }
         }
@@ -265,7 +302,10 @@ public class SmartCSVController extends FXMLController {
             public void handle(TableColumn.CellEditEvent<CSVRow, CSVValue> event) {
                 event.getTableView().getItems().get(event.getTablePosition().getRow()).
                 getColumns().get(header).setValue(event.getNewValue());
-                runLater(() -> model.revalidate());
+                runLater(() -> {
+                    fileChanged.setValue(true);
+                    model.revalidate();
+                });
             }
         });
 
@@ -284,6 +324,19 @@ public class SmartCSVController extends FXMLController {
         }
     }
 
+    private void setStateName() {
+        if (model != null) {
+            if (fileChanged.get()) {
+                stateName.setText(resourceBundle.getString("state.changed"));
+            } else {
+                stateName.setText(resourceBundle.getString("state.unchanged"));
+            }
+        } else {
+            stateName.setText("");
+        }
+    }
+
+
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
     // inner class
     ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -295,6 +348,7 @@ public class SmartCSVController extends FXMLController {
 
         private File file = null;
         private FileReader fileReader;
+        private Label fileLabel;
 
         public void setFile(File value) {
             file = value;
@@ -302,6 +356,9 @@ public class SmartCSVController extends FXMLController {
         public void setFileReader(FileReader fileReader) {
             this.fileReader = fileReader;
         }
+        public void setFileLabel(Label fileLabel) {
+            this.fileLabel = fileLabel;
+        }
 
         @Override
         protected Task createTask() {
@@ -312,7 +369,11 @@ public class SmartCSVController extends FXMLController {
                         try {
                             lastDirectory = file.getParentFile();
                             fileReader.read(file);
-                            runLater(SmartCSVController.this::resetContent);
+                            runLater(() -> {
+                                fileLabel.setText(file.getName());
+                                resetContent();
+                                fileChanged.setValue(false);
+                            });
                         } catch (Throwable ex) {
                             ex.printStackTrace();
                         }
@@ -321,6 +382,7 @@ public class SmartCSVController extends FXMLController {
                 }
             };
         }
+
     }
 
     /**
@@ -328,14 +390,23 @@ public class SmartCSVController extends FXMLController {
      */
     private class SaveCSVService extends Service {
 
+        private CSVFileWriter writer;
+
+        public void setWriter(CSVFileWriter writer) {
+            this.writer = writer;
+        }
+
         @Override
         protected Task createTask() {
             return new Task() {
                 @Override
                 protected Void call() throws Exception {
                     try {
-                        csvFileWriter.saveFile(model);
+                        writer.saveFile(model);
-                        runLater(SmartCSVController.this::resetContent);
+                        runLater(() -> {
+                            resetContent();
+                            fileChanged.setValue(false);
+                        });
                     } catch (Throwable ex) {
                         ex.printStackTrace();
                     }
@@ -343,5 +414,6 @@ public class SmartCSVController extends FXMLController {
                 }
             };
         }
+
     }
 }

src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.fxml

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 
+<?import java.net.*?>
 <?import javafx.geometry.*?>
 <?import javafx.scene.control.*?>
 <?import java.lang.*?>
@@ -55,19 +56,35 @@
            </items>
        </SplitPane>
    </center>
-   <bottom>
-      <HBox spacing="8.0" BorderPane.alignment="CENTER">
-         <children>
-            <Label fx:id="stateline" text="Status" HBox.hgrow="ALWAYS" />
-         </children>
-         <BorderPane.margin>
-            <Insets bottom="4.0" left="4.0" right="4.0" top="4.0" />
-         </BorderPane.margin>
-      </HBox>
-   </bottom>
    <left>
    </left>
     <stylesheets>
-        <URL value="@/ninja/javafx/smartcsv/fx/smartcsv.css"/>
+        <URL value="@/ninja/javafx/smartcsv/fx/smartcsv.css" />
     </stylesheets>
+   <bottom>
+      <GridPane hgap="8.0" BorderPane.alignment="CENTER">
+        <columnConstraints>
+          <ColumnConstraints hgrow="NEVER" minWidth="10.0" />
+          <ColumnConstraints hgrow="ALWAYS" minWidth="10.0" prefWidth="100.0" />
+            <ColumnConstraints hgrow="NEVER" minWidth="10.0" />
+            <ColumnConstraints hgrow="ALWAYS" minWidth="10.0" prefWidth="100.0" />
+            <ColumnConstraints hgrow="NEVER" minWidth="10.0" />
+            <ColumnConstraints hgrow="ALWAYS" minWidth="10.0" prefWidth="100.0" />
+        </columnConstraints>
+        <rowConstraints>
+          <RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+        </rowConstraints>
+         <children>
+            <Label text="%stateline.csv" GridPane.hgrow="NEVER" />
+            <Label fx:id="csvName" GridPane.columnIndex="1" GridPane.hgrow="ALWAYS" />
+            <Label text="%stateline.state" GridPane.columnIndex="2" GridPane.hgrow="NEVER" />
+            <Label fx:id="stateName" GridPane.columnIndex="3" GridPane.hgrow="ALWAYS" />
+             <Label text="%stateline.configuration" GridPane.columnIndex="4" GridPane.hgrow="NEVER" />
+             <Label fx:id="configurationName" GridPane.columnIndex="5" GridPane.hgrow="ALWAYS" />
+         </children>
+         <BorderPane.margin>
+            <Insets top="4.0" left="8.0" bottom="4.0" right="8.0" />
+         </BorderPane.margin>
+      </GridPane>
+   </bottom>
 </BorderPane>

src/main/resources/ninja/javafx/smartcsv/fx/smartcsv.properties

@@ -9,6 +9,17 @@ menu.edit = Edit
 menu.help = Help
 title.validation.errors = Validation Errors:
 
+stateline.csv = CSV:
+stateline.configuration = Validation Configuration:
+stateline.state = State:
+
+state.changed = changed
+state.unchanged = unchanged
+
+dialog.exit.title = Close Application
+dialog.exit.header.text = Do you want to close application?
+dialog.exit.text = There are changes made to the csv file. If you close now, the changes are lost!
+
 # validaton messages
 validation.message.not.empty = should not be empty
 validation.message.integer = should be an integer

src/main/resources/ninja/javafx/smartcsv/fx/smartcsv_de.properties

@@ -17,6 +17,17 @@ menu.edit = Bearbeiten
 menu.help = Hilfe
 title.validation.errors = Fehler in der Datei:
 
+stateline.csv = CSV:
+stateline.configuration = Pr\u00fcfkonfiguration:
+stateline.state = Status:
+
+state.changed = Ge\u00e4ndert
+state.unchanged = Unver\u00e4ndert
+
+dialog.exit.title = Anwendung beenden
+dialog.exit.header.text = M\u00f6chten Sie wirklich die Anwendung beenden?
+dialog.exit.text = Es gibt noch ungespeicherte \u00c4nderungen, die verloren gehen, wenn Sie die Anwendung jetzt beenden.
+
 # validaton messages
 validation.message.not.empty = Darf nicht leer sein.
 validation.message.integer = Muss eine Zahl sein.