IDE-177 Link cut and copy to new buttons

catroid/src/main/java/org/catrobat/catroid/formulaeditor/FormulaEditorEditText.java

@@ -398,4 +398,8 @@ public void setSelectionToFirstParamOfRegularExpressionAtInternalIndex(int index
 		internFormula.setSelectionToFirstParamOfRegularExpressionAtInternalIndex(indexOfRegularExpression);
 		highlightSelection();
 	}
+
+	public InternFormula getInternFormula() {
+		return internFormula;
+	}
 }

catroid/src/main/java/org/catrobat/catroid/formulaeditor/InternFormula.java

@@ -1,6 +1,6 @@
 /*
  * Catroid: An on-device visual programming system for Android devices
- * Copyright (C) 2010-2022 The Catrobat Team
+ * Copyright (C) 2010-2023 The Catrobat Team
  * (<http://developer.catrobat.org/credits>)
  *
  * This program is free software: you can redistribute it and/or modify
@@ -1182,4 +1182,8 @@ public boolean isThereSomethingToDelete() {
 	public void setInternTokenFormulaList(List<InternToken> list) {
 		internTokenFormulaList = list;
 	}
+
+	public List<InternToken> getInternTokenFormulaList() {
+		return internTokenFormulaList;
+	}
 }

catroid/src/main/java/org/catrobat/catroid/ui/FormulaEditorClipboard.kt

@@ -54,6 +54,14 @@ class FormulaEditorClipboard(private val formulaEditorEditText: FormulaEditorEdi
         copyTokens(formulaEditorEditText.selectedTokens)
     }
 
+    fun checkIfSelectedAndCopy() {
+        if (formulaEditorEditText.selectedTokens != null) {
+            copyTokens(formulaEditorEditText.selectedTokens)
+        } else {
+            copyTokens(formulaEditorEditText.internFormula.internTokenFormulaList)
+        }
+    }
+
     fun paste() {
         clipboard?.let { formulaEditorEditText.addTokens(cloneTokens(it)); }
     }

catroid/src/main/java/org/catrobat/catroid/ui/fragment/FormulaEditorFragment.java

@@ -400,7 +400,7 @@ public boolean onTouch(View view, MotionEvent event) {
 							formulaEditorClipboard.paste();
 							return true;
 						case R.id.formula_editor_keyboard_copy:
-							formulaEditorClipboard.copy();
+							formulaEditorClipboard.checkIfSelectedAndCopy();
 							return true;
 						default:
 							formulaEditorEditText.handleKeyEvent(view.getId(), "");

catroid/src/test/java/org/catrobat/catroid/test/ui/FormulaEditorClipboardTest.kt

@@ -80,6 +80,31 @@ class FormulaEditorClipboardTest {
         assertNull(controller.clipboard)
     }
 
+    @Test
+    fun shouldCopyWholeContent() {
+        val token = InternToken(InternTokenType.NUMBER, "12345678")
+        val tokens = listOf(token)
+        `when`(formulaEditorEditText.selectedTokens).thenReturn(tokens)
+        controller.checkIfSelectedAndCopy()
+        controller.clipboard?.let { clipboardIt ->
+            assertSameValuesButDifferentObjects(tokens, clipboardIt)
+        }
+    }
+
+    @Test
+    fun shouldCopySelectedPart() {
+        val token1 = InternToken(InternTokenType.NUMBER, "1234")
+        val token2 = InternToken(InternTokenType.OPERATOR, "+")
+        val token3 = InternToken(InternTokenType.NUMBER, "5678")
+        val tokens = listOf(token1, token2, token3)
+        formulaEditorEditText.addTokens(tokens)
+        `when`(formulaEditorEditText.selectedTokens).thenReturn(listOf(token1))
+        controller.checkIfSelectedAndCopy()
+        controller.clipboard?.let { clipboardIt ->
+            assertSameValuesButDifferentObjects(listOf(token1), clipboardIt)
+        }
+    }
+
     @Test
     fun shouldPaste() {
         val token1 = InternToken(InternTokenType.FUNCTION_NAME, "TestFunctionName")