Added SmartGraphPanel constructor to accept different css file from the default.

Author: brunomnsilva

releases/JavaFXSmartGraph-0.9.jar

@@ -58,6 +58,7 @@
 import static com.brunomnsilva.smartgraph.graphview.UtilitiesJavaFX.pick;
 import static com.brunomnsilva.smartgraph.graphview.UtilitiesPoint2D.attractiveForce;
 import static com.brunomnsilva.smartgraph.graphview.UtilitiesPoint2D.repellingForce;
+import java.net.URI;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.FutureTask;
@@ -142,7 +143,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties) {
      * vertices.
      *
      * @param theGraph underlying graph
-     * @param placementStrategy placement strategy
+     * @param placementStrategy placement strategy, null for default
      */
     public SmartGraphPanel(Graph<V, E> theGraph, SmartPlacementStrategy placementStrategy) {
         this(theGraph, null, placementStrategy);
@@ -154,11 +155,27 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartPlacementStrategy placementStr
      * vertices.
      *
      * @param theGraph underlying graph
-     * @param properties custom properties
-     * @param placementStrategy placement strategy
+     * @param properties custom properties, null for default
+     * @param placementStrategy placement strategy, null for default
      */
     public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties,
             SmartPlacementStrategy placementStrategy) {
+        
+        this(theGraph, properties, placementStrategy, null);
+    }
+    
+    /**
+     * Constructs a visualization of the graph referenced by
+     * <code>theGraph</code>, using custom properties and custom placement of
+     * vertices.
+     *
+     * @param theGraph underlying graph
+     * @param properties custom properties, null for default
+     * @param placementStrategy placement strategy, null for default
+     * @param cssFile alternative css file, instead of default 'smartgraph.css'
+     */
+    public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties,
+            SmartPlacementStrategy placementStrategy, URI cssFile) {
 
         if (theGraph == null) {
             throw new IllegalArgumentException("The graph cannot be null.");
@@ -177,7 +194,7 @@ public SmartGraphPanel(Graph<V, E> theGraph, SmartGraphProperties properties,
         edgeNodes = new HashMap<>(); 
 
         //set stylesheet and class
-        loadStylesheet();
+        loadStylesheet(cssFile);
 
         initNodes();
 
@@ -934,13 +951,18 @@ public SmartStylableNode getStylableEdge(E edgeElement) {
     }
 
     /**
-     * Loads the default stylesheet and applies the .graph class to this panel.
+     * Loads the stylesheet and applies the .graph class to this panel.
      */
-    private void loadStylesheet() {
+    private void loadStylesheet(URI cssFile) {
         try {
-            File f = new File("smartgraph.css");
+            String css;
+            if( cssFile != null ) {
+                css = cssFile.toURL().toExternalForm();
+            } else {
+                File f = new File("smartgraph.css");
+                css = f.toURI().toURL().toExternalForm();
+            }
 
-            String css = f.toURI().toURL().toExternalForm();
             getStylesheets().add(css);
             this.getStyleClass().add("graph");
         } catch (MalformedURLException ex) {

releases/JavaFXSmartGraph-0.9.zip

@@ -99,7 +99,8 @@ public SmartGraphProperties(InputStream inputStream) {
         try {
             properties.load(inputStream);
         } catch (IOException ex) {
-            System.err.println("The file provided by the input stream does not exist. Using default values.");
+            String msg = "The file provided by the input stream does not exist. Using default values.";
+            Logger.getLogger(SmartGraphProperties.class.getName()).log(Level.WARNING, msg);
         }
     }