PartJunction* implemented

src/main/java/de/ph87/electro/circuit/CircuitPanelDropTarget.java

@@ -22,6 +22,12 @@ public class CircuitPanelDropTarget extends AbstractDropTarget {
     final Point raster = div(point, RASTER);
     if (data.equals(PartBattery.class.getSimpleName())) {
       circuitPanel.getCircuit().partAdd(new PartBattery(raster));
+    } else if (data.equals(PartJunctionCorner.class.getSimpleName())) {
+      circuitPanel.getCircuit().partAdd(new PartJunctionCorner(raster));
+    } else if (data.equals(PartJunctionEdge.class.getSimpleName())) {
+      circuitPanel.getCircuit().partAdd(new PartJunctionEdge(raster));
+    } else if (data.equals(PartJunctionMiddle.class.getSimpleName())) {
+      circuitPanel.getCircuit().partAdd(new PartJunctionMiddle(raster));
     } else if (data.equals(PartLight.class.getSimpleName())) {
       circuitPanel.getCircuit().partAdd(new PartLight(raster));
     } else if (data.equals(PartSwitch1x1.class.getSimpleName())) {
@@ -31,7 +37,7 @@ public class CircuitPanelDropTarget extends AbstractDropTarget {
     } else if (data.equals(PartSwitchCross.class.getSimpleName())) {
       circuitPanel.getCircuit().partAdd(new PartSwitchCross(raster));
     } else {
-      return false;
+      throw new RuntimeException();
     }
     circuitPanel.repaint();
     return true;

src/main/java/de/ph87/electro/circuit/part/impl/PartJunctionCorner.java

@@ -0,0 +1,53 @@
+package de.ph87.electro.circuit.part.impl;
+
+import de.ph87.electro.circuit.dto.PartSwitchCrossDto;
+import de.ph87.electro.circuit.part.Junction;
+import de.ph87.electro.circuit.part.Orientation;
+import de.ph87.electro.circuit.part.PartOther;
+import lombok.Getter;
+import lombok.ToString;
+
+import java.awt.*;
+
+import static de.ph87.electro.CONFIG.*;
+
+@Getter
+@ToString(callSuper = true)
+public class PartJunctionCorner extends PartOther {
+
+  private final Junction j0;
+
+  private final Junction j1;
+
+  public PartJunctionCorner(final Point position) {
+    this("", position, Orientation.R0);
+  }
+
+  public PartJunctionCorner(final String name, final Point position, final Orientation orientation) {
+    super(name, position, orientation);
+    j0 = newJunction(this, "", JUNCTION_LEFT, JUNCTION_LEFT);
+    j1 = newJunction(this, "", JUNCTION_RIGHT, JUNCTION_RIGHT);
+  }
+
+  public PartJunctionCorner(final PartSwitchCrossDto dto) {
+    super(dto);
+    j0 = newJunction(this, dto.getCommon0(), JUNCTION_LEFT, FOURTH1);
+    j1 = newJunction(this, dto.getOutput1(), JUNCTION_RIGHT, FOURTH3);
+  }
+
+  @Override
+  public void propagate(final Junction source) {
+    // nothing
+  }
+
+  @Override
+  protected void _render(final Graphics2D g) {
+    // nothing
+  }
+
+  @Override
+  public void action() {
+    // nothing
+  }
+
+}

src/main/java/de/ph87/electro/circuit/part/impl/PartJunctionEdge.java

@@ -0,0 +1,54 @@
+package de.ph87.electro.circuit.part.impl;
+
+import de.ph87.electro.circuit.dto.PartSwitchCrossDto;
+import de.ph87.electro.circuit.part.Junction;
+import de.ph87.electro.circuit.part.Orientation;
+import de.ph87.electro.circuit.part.PartOther;
+import lombok.Getter;
+import lombok.ToString;
+
+import java.awt.*;
+
+import static de.ph87.electro.CONFIG.HALF;
+import static de.ph87.electro.CONFIG.JUNCTION_LEFT;
+
+@Getter
+@ToString(callSuper = true)
+public class PartJunctionEdge extends PartOther {
+
+  private final Junction j0;
+
+  private final Junction j1;
+
+  public PartJunctionEdge(final Point position) {
+    this("", position, Orientation.R0);
+  }
+
+  public PartJunctionEdge(final String name, final Point position, final Orientation orientation) {
+    super(name, position, orientation);
+    j0 = newJunction(this, "", JUNCTION_LEFT, HALF);
+    j1 = newJunction(this, "", HALF, JUNCTION_LEFT);
+  }
+
+  public PartJunctionEdge(final PartSwitchCrossDto dto) {
+    super(dto);
+    j0 = newJunction(this, dto.getCommon0(), 0, HALF);
+    j1 = newJunction(this, dto.getOutput1(), HALF, 0);
+  }
+
+  @Override
+  public void propagate(final Junction source) {
+    // nothing
+  }
+
+  @Override
+  protected void _render(final Graphics2D g) {
+    // nothing
+  }
+
+  @Override
+  public void action() {
+    // nothing
+  }
+
+}

src/main/java/de/ph87/electro/circuit/part/impl/PartJunctionMiddle.java

@@ -0,0 +1,49 @@
+package de.ph87.electro.circuit.part.impl;
+
+import de.ph87.electro.circuit.dto.PartSwitchCrossDto;
+import de.ph87.electro.circuit.part.Junction;
+import de.ph87.electro.circuit.part.Orientation;
+import de.ph87.electro.circuit.part.PartOther;
+import lombok.Getter;
+import lombok.ToString;
+
+import java.awt.*;
+
+import static de.ph87.electro.CONFIG.HALF;
+
+@Getter
+@ToString(callSuper = true)
+public class PartJunctionMiddle extends PartOther {
+
+  private final Junction junction;
+
+  public PartJunctionMiddle(final Point position) {
+    this("", position, Orientation.R0);
+  }
+
+  public PartJunctionMiddle(final String name, final Point position, final Orientation orientation) {
+    super(name, position, orientation);
+    junction = newJunction(this, "", HALF, HALF);
+  }
+
+  public PartJunctionMiddle(final PartSwitchCrossDto dto) {
+    super(dto);
+    junction = newJunction(this, dto.getCommon0(), HALF, HALF);
+  }
+
+  @Override
+  public void propagate(final Junction source) {
+    // nothing
+  }
+
+  @Override
+  protected void _render(final Graphics2D g) {
+    // nothing
+  }
+
+  @Override
+  public void action() {
+    // nothing
+  }
+
+}

src/main/java/de/ph87/electro/sidebar/Sidebar.java

@@ -10,6 +10,9 @@ public class Sidebar extends JPanel {
 
   public Sidebar() {
     add(new PartBattery(new Point(0, 0)));
+    add(new PartJunctionCorner(new Point(0, 0)));
+    add(new PartJunctionEdge(new Point(0, 0)));
+    add(new PartJunctionMiddle(new Point(0, 0)));
     add(new PartLight(new Point(0, 0)));
     add(new PartSwitch1x1(new Point(0, 0)));
     add(new PartSwitch1x2(new Point(0, 0)));