added "L" short cut to insert last inserted component again.

src/main/java/de/neemann/digital/gui/InsertHistory.java

@@ -21,6 +21,7 @@ public class InsertHistory implements LibraryListener {
     private final ElementLibrary library;
     private final ArrayList<WrapperAction> wrappers;
     private int mainTime;
+    private InsertAction lastInsertAction;
 
     /**
      * Creates a new instance
@@ -42,6 +43,7 @@ public class InsertHistory implements LibraryListener {
      * @param action the action
      */
     public void add(InsertAction action) {
+        lastInsertAction = action;
         if (!contains(action)) {
             WrapperAction wrapper = new WrapperAction(action, bar.getComponentCount());
             wrappers.add(wrapper);
@@ -82,6 +84,12 @@ public class InsertHistory implements LibraryListener {
         return false;
     }
 
+    /**
+     * @return the last insert action
+     */
+    public InsertAction getLastInsertAction() {
+        return lastInsertAction;
+    }
 
     @Override
     public void libraryChanged(LibraryNode node) {

src/main/java/de/neemann/digital/gui/Main.java

@@ -246,6 +246,15 @@ public final class Main extends JFrame implements ClosingWindowListener.ConfirmS
             }
         }.setToolTip(Lang.get("menu_help_elements_tt")).createJMenuItem());
 
+        new ToolTipAction("insertLast") {
+            @Override
+            public void actionPerformed(ActionEvent actionEvent) {
+                InsertAction lastInsertAction = insertHistory.getLastInsertAction();
+                if (lastInsertAction != null)
+                    lastInsertAction.actionPerformed(actionEvent);
+            }
+        }.setAccelerator("L").enableAcceleratorIn(circuitComponent);
+
         enableClockShortcut();
 
         setPreferredSize(Screen.getInstance().scale(new Dimension(1024, 768)));

src/main/java/de/neemann/digital/gui/components/CircuitComponent.java

@@ -636,6 +636,9 @@ public class CircuitComponent extends JComponent implements Circuit.ChangedListe
             } catch (AWTException e) {
                 e.printStackTrace();
             }
+        } else {
+            mouseInsertElement.updateMousePos(getPosVector(point.x, point.y));
+            repaintNeeded();
         }
     }
 
@@ -1173,11 +1176,15 @@ public class CircuitComponent extends JComponent implements Circuit.ChangedListe
 
         @Override
         void moved(MouseEvent e) {
+            updateMousePos(getPosVector(e));
+        }
+
+        void updateMousePos(Vector pos) {
             if (delta == null) {
                 GraphicMinMax minMax = element.getMinMax(false);
                 delta = element.getPos().sub(minMax.getMax());
             }
-            element.setPos(raster(getPosVector(e).add(delta)));
+            element.setPos(raster(pos.add(delta)));
             repaint();
         }
 
@@ -1210,6 +1217,7 @@ public class CircuitComponent extends JComponent implements Circuit.ChangedListe
         public void escapePressed() {
             mouseNormal.activate();
         }
+
     }
 
     private final class MouseControllerMoveElement extends MouseController {

src/test/resources/docu/static_de.xml

@@ -242,6 +242,7 @@
         <shortcut key="STRG-C">Kopieren der selektierten Elemente in die Zwischenablage.</shortcut>
         <shortcut key="STRG-V">Einfügen der Elemente aus der Zwischenablage.</shortcut>
         <shortcut key="R">Beim Einfügen rotieren der Elemente.</shortcut>
+        <shortcut key="L">Letztes eingefügtes Element noch einmal einfügen.</shortcut>
         <shortcut key="STRG-S">Speichern der Schaltung.</shortcut>
         <shortcut key="STRG-Z">Letzte Änderung zurücknehmen.</shortcut>
         <shortcut key="STRG-Y">Zurückgenommene Änderung erneut anwenden.</shortcut>

src/test/resources/docu/static_en.xml

@@ -231,6 +231,7 @@
         <shortcut key="CTRL-C">Copys the selected components to the clipboard.</shortcut>
         <shortcut key="CTRL-V">Inserts the comonents from the clipboard.</shortcut>
         <shortcut key="R">While inserting this rotates the components.</shortcut>
+        <shortcut key="L">Inserts the last inserted component again.</shortcut>
         <shortcut key="CTRL-S">Save the circuit.</shortcut>
         <shortcut key="CTRL-Z">Undo last modification.</shortcut>
         <shortcut key="CTRL-Y">Redo the last undone modification.</shortcut>