When a new file is opened check first if there are unsafed changes and show a warning dialog.

README.md

@@ -15,7 +15,7 @@ even in a "normal" CSV editor. So I decided to write this simple JavaFX applicat
 
 [Wiki & Documentation](https://github.com/frosch95/SmartCSV.fx/wiki)
 
-binary distribution of the [latest release (1.2.0)](https://github.com/frosch95/SmartCSV.fx/releases/download/1.2.0/SmartCSV.fx-1.2.0.zip)
+binary distribution of the [latest release (1.3.0)](https://github.com/frosch95/SmartCSV.fx/releases/download/1.3.0/SmartCSV.fx-1.3.0.zip)
 
 ## Talks
 [Introduction](http://javafx.ninja/talks/introduction/)

build.gradle

@@ -48,5 +48,5 @@ test {
 }
 
 group 'ninja.javafx'
-version '1.2.0'
+version '1.3.0'
 mainClassName = 'ninja.javafx.smartcsv.Main'

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

@@ -276,7 +276,7 @@ public class SmartCSVController extends FXMLController {
         tableWrapper.setOnDragDropped(event -> {
             Dragboard db = event.getDragboard();
             boolean success = false;
-            if (db.hasFiles() && db.getFiles().size() == 1) {
+            if (db.hasFiles() && db.getFiles().size() == 1 && canOpen()) {
                 File file = db.getFiles().get(0);
                 openFile(currentCsvFile, file);
                 success = true;
@@ -503,6 +503,22 @@ public class SmartCSVController extends FXMLController {
         return canExit;
     }
 
+    private boolean canOpen() {
+        boolean canOpen = true;
+        if (currentCsvFile.getContent() != null && currentCsvFile.isFileChanged()) {
+            Alert alert = new Alert(Alert.AlertType.CONFIRMATION);
+            alert.setTitle(resourceBundle.getString("dialog.changes.title"));
+            alert.setHeaderText(resourceBundle.getString("dialog.changes.header.text"));
+            alert.setContentText(resourceBundle.getString("dialog.changes.text"));
+
+            Optional<ButtonType> result = alert.showAndWait();
+            if (result.get() != ButtonType.OK){
+                canOpen = false;
+            }
+        }
+        return canOpen;
+    }
+
     public void showValidationEditor(String column) {
         validationEditorController.setSelectedColumn(column);
         validationEditorController.updateForm();

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

@@ -1,5 +1,5 @@
 application.name = SmartCSV.fx
-application.version = 1.2.0
+application.version = 1.3.0
 
 # fxml views
 fxml.smartcvs.view = /ninja/javafx/smartcsv/fx/smartcsv.fxml

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

@@ -29,6 +29,10 @@ 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!
 
+dialog.changes.title = Discard changes
+dialog.changes.header.text = Do you want to discard changes?
+dialog.changes.text = There are changes made to the csv file. If you open a new file, the changes are lost!
+
 dialog.preferences.title = Preferences
 dialog.preferences.header.text = Preferences
 

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

@@ -45,6 +45,10 @@ 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.
 
+dialog.changes.title = Änderungen verwerfen
+dialog.changes.header.text = Wollen Sie Ihre Änderungen verwerfen?
+dialog.changes.text = Es gibt noch ungespeicherte \u00c4nderungen, die verloren gehen, wenn Sie die Datei laden.
+
 preferences.quoteChar = Einfassungszeichen:
 preferences.delimiterChar = Trennzeichen:
 preferences.ignoreEmptyLines = Leere Zeilen ignorieren: