Propagate hover effect on edges to arrows.

Author: brunomnsilva

src/main/java/com/brunomnsilva/smartgraph/graphview/SmartGraphEdgeCurve.java

@@ -26,6 +26,8 @@
 import com.brunomnsilva.smartgraph.graph.Edge;
 import javafx.beans.binding.Bindings;
 import javafx.geometry.Point2D;
+import javafx.scene.input.MouseButton;
+import javafx.scene.input.MouseEvent;
 import javafx.scene.shape.CubicCurve;
 import javafx.scene.transform.Rotate;
 import javafx.scene.transform.Translate;
@@ -112,6 +114,8 @@ public SmartGraphEdgeCurve(Edge<E, V> edge, SmartGraphVertexNode<V> inbound, Sma
 
         //update();
         enableListeners();
+
+        propagateHoverEffectToArrow();
     }
 
     public void setStyleInline(String css) {
@@ -277,4 +281,18 @@ public SmartStylableNode getStylableArrow() {
     public SmartStylableNode getStylableLabel() {
         return this.attachedLabel;
     }
+
+    private void propagateHoverEffectToArrow() {
+        this.hoverProperty().addListener((observable, oldValue, newValue) -> {
+            if(attachedArrow != null && newValue) {
+
+                attachedArrow.fireEvent(new MouseEvent(MouseEvent.MOUSE_ENTERED, 0, 0, 0, 0, MouseButton.NONE, 0, true, true, true, true, true, true, true, true, true, true, null));
+
+            } else if(attachedArrow != null) { //newValue is false, hover ended
+
+                attachedArrow.fireEvent(new MouseEvent(MouseEvent.MOUSE_EXITED, 0, 0, 0, 0, MouseButton.NONE, 0, true, true, true, true, true, true, true, true, true, true, null));
+
+            }
+        });
+    }
 }

src/main/java/com/brunomnsilva/smartgraph/graphview/SmartGraphEdgeLine.java

@@ -25,6 +25,8 @@
 
 import com.brunomnsilva.smartgraph.graph.Edge;
 import javafx.beans.binding.Bindings;
+import javafx.scene.input.MouseButton;
+import javafx.scene.input.MouseEvent;
 import javafx.scene.shape.Line;
 import javafx.scene.transform.Rotate;
 import javafx.scene.transform.Translate;
@@ -76,6 +78,8 @@ public SmartGraphEdgeLine(Edge<E, V> edge, SmartGraphVertexNode<V> inbound, Smar
         this.startYProperty().bind(outbound.centerYProperty());
         this.endXProperty().bind(inbound.centerXProperty());
         this.endYProperty().bind(inbound.centerYProperty());
+
+        propagateHoverEffectToArrow();
     }
 
     @Override
@@ -110,7 +114,6 @@ public boolean removeStyleClass(String cssClass) {
         }
         return result;
     }
-    
 
     @Override
     public void attachLabel(SmartLabel label) {
@@ -129,8 +132,6 @@ public SmartLabel getAttachedLabel() {
     public Edge<E, V> getUnderlyingEdge() {
         return underlyingEdge;
     }
-    
-    
 
     @Override
     public void attachArrow(SmartArrow arrow) {
@@ -172,5 +173,19 @@ public SmartStylableNode getStylableArrow() {
     public SmartStylableNode getStylableLabel() {
         return this.attachedLabel;
     }
-    
+
+    private void propagateHoverEffectToArrow() {
+        this.hoverProperty().addListener((observable, oldValue, newValue) -> {
+            if(attachedArrow != null && newValue) {
+
+                attachedArrow.fireEvent(new MouseEvent(MouseEvent.MOUSE_ENTERED, 0, 0, 0, 0, MouseButton.NONE, 0, true, true, true, true, true, true, true, true, true, true, null));
+
+            } else if(attachedArrow != null) { //newValue is false, hover ended
+
+                attachedArrow.fireEvent(new MouseEvent(MouseEvent.MOUSE_EXITED, 0, 0, 0, 0, MouseButton.NONE, 0, true, true, true, true, true, true, true, true, true, true, null));
+
+            }
+        });
+    }
+
 }