Reimplement a textfield with a contextmenu

2 files changed, 122 insertions, 1 deletions

diff --git a/src/de/fhswf/in/inf/java2/aufgabe04/CountdownButtonMain.java b/src/de/fhswf/in/inf/java2/aufgabe04/CountdownButtonMain.java
index 5af329e..be0f3bf 100644
--- a/src/de/fhswf/in/inf/java2/aufgabe04/CountdownButtonMain.java
+++ b/src/de/fhswf/in/inf/java2/aufgabe04/CountdownButtonMain.java
@@ -3,6 +3,7 @@ package de.fhswf.in.inf.java2.aufgabe04;
 import javafx.application.Application;
 import javafx.application.Platform;
 import javafx.scene.Scene;
+import javafx.scene.layout.VBox;
 import javafx.stage.Stage;
 
 public class CountdownButtonMain extends Application
@@ -15,10 +16,16 @@ public class CountdownButtonMain extends Application
       ceb.setOnAction(e -> {
             Platform.exit();
          });
-      Scene scene = new Scene(ceb);
+      
+      TextFieldWithContextMenu tfwcm = new TextFieldWithContextMenu();
+      
+      VBox vbox = new VBox(ceb,tfwcm);
+      Scene scene = new Scene(vbox);
       primaryStage.setScene(scene);
       primaryStage.show();
+      
       ceb.startCountdown();
+      ceb.stopCountdown();
 
    }
 
diff --git a/src/de/fhswf/in/inf/java2/aufgabe04/TextFieldWithContextMenu.java b/src/de/fhswf/in/inf/java2/aufgabe04/TextFieldWithContextMenu.java
new file mode 100644
index 0000000..7884659
--- /dev/null
+++ b/src/de/fhswf/in/inf/java2/aufgabe04/TextFieldWithContextMenu.java
@@ -0,0 +1,114 @@
+/**
+ * File for the TextFieldWithContextMenu.
+ */
+
+package de.fhswf.in.inf.java2.aufgabe04;
+
+import java.util.HashMap;
+import java.util.Map;
+import java.util.Stack;
+
+import javafx.scene.control.ContextMenu;
+import javafx.scene.control.MenuItem;
+import javafx.scene.control.TextField;
+import javafx.scene.input.Clipboard;
+import javafx.scene.input.DataFormat;
+
+/**
+ * A TextField with a ContextMenu.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public class TextFieldWithContextMenu extends TextField
+{
+   Stack<String> undoStack = new Stack<>();
+   
+   private MenuItem undo = new MenuItem("Rückgängig");
+   private MenuItem cut = new MenuItem("Ausschneiden");
+   private MenuItem copy = new MenuItem("Kopieren");
+   private MenuItem paste = new MenuItem("Einfügen");
+   private MenuItem delete = new MenuItem("Löschen");
+   private MenuItem selectAll = new MenuItem("Alles Markieren");
+   
+   private ContextMenu contextMenu;
+
+   /**
+    * Build the ContextMenu for the TextField.
+    *
+    */
+   public TextFieldWithContextMenu()
+   {
+      
+      //So empty is a valid pop and we never pop an empty stack
+      undoStack.push("");
+      
+      undo.setOnAction(e -> {
+            //The first time properties are strange.
+            //The multiple pops are needed as the TextChangeListener
+            //adds the actual text before and after the setText
+            undoStack.pop();
+            setText(undoStack.pop());
+            undoStack.pop();
+         });
+
+      cut.setOnAction(e -> {
+            Map<DataFormat, Object> content = new HashMap<>();
+            content.put(DataFormat.PLAIN_TEXT, getSelectedText());
+            Clipboard.getSystemClipboard().setContent(content);
+            deleteText(getSelection());
+         });
+      
+      copy.setOnAction(e -> {
+            Map<DataFormat, Object> content = new HashMap<>();
+            content.put(DataFormat.PLAIN_TEXT, getSelectedText());
+            Clipboard.getSystemClipboard().setContent(content);
+         });
+      
+      paste.setOnAction(e -> {
+            replaceSelection(Clipboard.getSystemClipboard().getString());
+         });
+      
+      delete.setOnAction(e -> {
+            replaceSelection("");
+         });
+
+      selectAll.setOnAction(e -> {
+            selectRange(0, getText().length());
+         });
+
+      contextMenu = new ContextMenu(undo, cut, copy, paste, delete,
+            selectAll);
+      
+      setContextMenu(contextMenu);
+      
+      contextMenu.setOnShowing(e -> {
+            getContextMenu().getItems().forEach(f -> {
+                  f.setDisable(true);
+               });
+            if (undoStack.size() > 1)
+            {
+               undo.setDisable(false);
+            }
+            if (getSelection().getLength() > 0)
+            {
+               copy.setDisable(false);
+               cut.setDisable(false);
+               delete.setDisable(false);
+            }
+            if (Clipboard.getSystemClipboard().getString() != null)
+            {
+               paste.setDisable(false);
+            }
+            if (getLength() > 0 && getSelection().getLength() < getLength())
+            {
+               selectAll.setDisable(false);
+            }
+         });
+      
+      textProperty().addListener(e -> {
+            undoStack.push(getText());
+         });
+   }
+
+}