Added "Copy Translation Key" Option to Edit menus

src/main/java/com/jvms/i18neditor/editor/Editor.java

@@ -7,6 +7,9 @@
 import java.awt.Desktop;
 import java.awt.Dimension;
 import java.awt.KeyboardFocusManager;
+import java.awt.Toolkit;
+import java.awt.datatransfer.Clipboard;
+import java.awt.datatransfer.StringSelection;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
@@ -245,6 +248,16 @@ public void renameSelectedTranslation() {
 		}
 	}
 
+	public void copySelectedTranslationKey() {
+		TranslationTreeNode node = translationTree.getSelectionNode();
+		if (node != null && !node.isRoot()) {
+			String key = node.getKey();
+			StringSelection selection = new StringSelection(key);
+			Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
+			clipboard.setContents(selection, selection);
+		}
+	}
+
 	public void duplicateSelectedTranslation() {
 		TranslationTreeNode node = translationTree.getSelectionNode();
 		if (node != null && !node.isRoot()) {

src/main/java/com/jvms/i18neditor/editor/EditorMenuBar.java

@@ -18,6 +18,7 @@
 import com.jvms.i18neditor.editor.menu.AddLocaleMenuItem;
 import com.jvms.i18neditor.editor.menu.AddTranslationMenuItem;
 import com.jvms.i18neditor.editor.menu.CollapseTranslationsMenuItem;
+import com.jvms.i18neditor.editor.menu.CopyTranslationKeyToClipboardMenuItem;
 import com.jvms.i18neditor.editor.menu.DuplicateTranslationMenuItem;
 import com.jvms.i18neditor.editor.menu.ExpandTranslationsMenuItem;
 import com.jvms.i18neditor.editor.menu.FindTranslationMenuItem;
@@ -41,6 +42,7 @@ public class EditorMenuBar extends JMenuBar {
 	private JMenuItem addTranslationMenuItem;
 	private JMenuItem findTranslationMenuItem;
 	private JMenuItem renameTranslationMenuItem;
+	private JMenuItem copyTranslationKeyMenuItem;
 	private JMenuItem duplicateTranslationMenuItem;
 	private JMenuItem removeTranslationMenuItem;
 	private JMenuItem openContainingFolderMenuItem;
@@ -173,13 +175,15 @@ private void setupUI() {
         removeTranslationMenuItem = new RemoveTranslationMenuItem(editor, false);
         duplicateTranslationMenuItem = new DuplicateTranslationMenuItem(editor, true);
         renameTranslationMenuItem = new RenameTranslationMenuItem(editor, false);
+        copyTranslationKeyMenuItem = new CopyTranslationKeyToClipboardMenuItem(editor, false);
 
         editMenu.add(new AddLocaleMenuItem(editor, true));
         editMenu.addSeparator();
         editMenu.add(addTranslationMenuItem);
         editMenu.add(findTranslationMenuItem);
         editMenu.addSeparator();
         editMenu.add(renameTranslationMenuItem);
+        editMenu.add(copyTranslationKeyMenuItem);
         editMenu.add(duplicateTranslationMenuItem);
         editMenu.add(removeTranslationMenuItem);
 
@@ -232,6 +236,7 @@ private void setupUI() {
      		TranslationTreeNode node = tree.getSelectionNode();
      		boolean enabled = node != null && !node.isRoot();
 			renameTranslationMenuItem.setEnabled(enabled);
+			copyTranslationKeyMenuItem.setEnabled(enabled);
 			duplicateTranslationMenuItem.setEnabled(enabled);
 			removeTranslationMenuItem.setEnabled(enabled);
      	});

src/main/java/com/jvms/i18neditor/editor/TranslationTreeNodeMenu.java

@@ -3,6 +3,7 @@
 import javax.swing.JPopupMenu;
 
 import com.jvms.i18neditor.editor.menu.AddTranslationMenuItem;
+import com.jvms.i18neditor.editor.menu.CopyTranslationKeyToClipboardMenuItem;
 import com.jvms.i18neditor.editor.menu.DuplicateTranslationMenuItem;
 import com.jvms.i18neditor.editor.menu.RemoveTranslationMenuItem;
 import com.jvms.i18neditor.editor.menu.RenameTranslationMenuItem;
@@ -21,6 +22,7 @@ public TranslationTreeNodeMenu(Editor editor, TranslationTreeNode node) {
 		if (!node.isRoot()) {
 			addSeparator();
 			add(new RenameTranslationMenuItem(editor, true));
+			add(new CopyTranslationKeyToClipboardMenuItem(editor, true));
 			add(new DuplicateTranslationMenuItem(editor, true));
 			add(new RemoveTranslationMenuItem(editor, true));
 		}

src/main/java/com/jvms/i18neditor/editor/menu/CopyTranslationKeyToClipboardMenuItem.java

@@ -0,0 +1,28 @@
+package com.jvms.i18neditor.editor.menu;
+
+import java.awt.Toolkit;
+import java.awt.event.KeyEvent;
+
+import javax.swing.JMenuItem;
+import javax.swing.KeyStroke;
+
+import com.jvms.i18neditor.editor.Editor;
+import com.jvms.i18neditor.util.MessageBundle;
+
+/**
+ * This class represents a menu item for copying a translations key to the system clipboard.
+ * 
+ * @author Fabian Terstegen
+ *
+ */
+public class CopyTranslationKeyToClipboardMenuItem extends JMenuItem {
+	private static final long serialVersionUID = 6032182493888769724L;
+
+	public CopyTranslationKeyToClipboardMenuItem(Editor editor, boolean enabled) {
+        super(MessageBundle.get("menu.edit.copy.key.title"));
+        setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_C, Toolkit.getDefaultToolkit().getMenuShortcutKeyMask()));
+		addActionListener(e -> editor.copySelectedTranslationKey());
+		setEnabled(enabled);
+	}
+
+}

src/main/resources/bundles/messages.properties

@@ -41,6 +41,7 @@ menu.edit.delete.title = Delete Translation
 menu.edit.duplicate.title = Duplicate Translation...
 menu.edit.find.translation.title = Find Translation...
 menu.edit.rename.title = Rename Translation...
+menu.edit.copy.key.title = Copy Translation Key...
 menu.edit.title = Edit
 menu.edit.vk = E
 menu.file.exit.title = Exit

src/main/resources/bundles/messages_nl.properties

@@ -41,6 +41,7 @@ menu.edit.delete.title = Vertaling Verwijderen
 menu.edit.duplicate.title = Vertaling Dupliceren...
 menu.edit.find.translation.title = Vertaling Zoeken...
 menu.edit.rename.title = Vertaling Hernoemen...
+menu.edit.copy.key.title = Copy Translation Key...
 menu.edit.title = Bewerken
 menu.edit.vk = W
 menu.file.exit.title = Sluiten

src/main/resources/bundles/messages_pt_BR.properties

@@ -41,6 +41,7 @@ menu.edit.delete.title = Excluir Tradu\u00e7\u00e3o
 menu.edit.duplicate.title = Duplicar Tradu\u00e7\u00e3o...
 menu.edit.find.translation.title = Localizar Tradu\u00e7\u00e3o...
 menu.edit.rename.title = Renomear Tradu\u00e7\u00e3o...
+menu.edit.copy.key.title = Copy Translation Key...
 menu.edit.title = Editar
 menu.edit.vk = E
 menu.file.exit.title = Sair