Add a new parameter to add a value in the 'ui.class' attribute of boid nodes...

Add a new parameter to add a value in the 'ui.class' attribute of boid nodes to allow a by-species custom css.

src/org/graphstream/boids/BoidGraph.java

@@ -478,9 +478,16 @@ public class BoidGraph extends AdjacencyListGraph {
 					else
 						species = getOrCreateSpecies(name);
 
-					if (key != null)
-						species.set(key, newValue == null ? null : newValue
-								.toString());
+					if (key != null) {
+						try {
+							species.set(key, newValue == null ? null : newValue
+									.toString());
+						} catch (IllegalArgumentException e) {
+							System.err.printf("(WW) invalid parameter '%s'\n",
+									key);
+							System.err.printf("     ignoring it.\n");
+						}
+					}
 
 					break;
 				}

src/org/graphstream/boids/BoidSpecies.java

@@ -45,7 +45,7 @@ public class BoidSpecies implements Iterable<Boid> {
 	 * Kinds of parameters.
 	 */
 	public static enum Parameter {
-		COUNT, ANGLE_OF_VIEW, VIEW_ZONE, SPEED_FACTOR, MAX_SPEED, MIN_SPEED, DIRECTION_FACTOR, ATTRACTION_FACTOR, REPULSION_FACTOR, INERTIA, FEAR_FACTOR
+		COUNT, ANGLE_OF_VIEW, VIEW_ZONE, SPEED_FACTOR, MAX_SPEED, MIN_SPEED, DIRECTION_FACTOR, ATTRACTION_FACTOR, REPULSION_FACTOR, INERTIA, FEAR_FACTOR, ADD_SPECIES_NAME_IN_UI_CLASS
 	}
 
 	/**
@@ -135,6 +135,8 @@ public class BoidSpecies implements Iterable<Boid> {
 	 */
 	protected HashMap<String, Boid> boids;
 
+	protected boolean addSpeciesNameInUIClass;
+
 	private int currentIndex = 0;
 	private long timestamp = System.nanoTime();
 
@@ -164,6 +166,7 @@ public class BoidSpecies implements Iterable<Boid> {
 		repulsionFactor = 0.001f;
 		inertia = 1.1f;
 		fearFactor = 1;
+		addSpeciesNameInUIClass = true;
 
 		this.color = new Color(ctx.random.nextFloat(), ctx.random.nextFloat(),
 				ctx.random.nextFloat());
@@ -242,6 +245,9 @@ public class BoidSpecies implements Iterable<Boid> {
 		case ANGLE_OF_VIEW:
 			angleOfView = Double.parseDouble(val);
 			break;
+		case ADD_SPECIES_NAME_IN_UI_CLASS:
+			addSpeciesNameInUIClass = Boolean.parseBoolean(val);
+			break;
 		}
 	}
 
@@ -278,10 +284,32 @@ public class BoidSpecies implements Iterable<Boid> {
 
 	void register(Boid b) {
 		boids.put(b.getId(), b);
+
+		if (addSpeciesNameInUIClass) {
+			String uiClass = b.getAttribute("ui.class");
+
+			if (uiClass == null)
+				uiClass = name;
+			else
+				uiClass = uiClass + " " + name;
+
+			b.setAttribute("ui.class", uiClass);
+		}
 	}
 
 	void unregister(Boid b) {
 		boids.remove(b.getId());
+
+		if (addSpeciesNameInUIClass) {
+			String uiClass = b.getAttribute("ui.class");
+
+			if (uiClass != null && uiClass.indexOf(name) != -1) {
+				uiClass = uiClass.replaceAll("(^|\\s)" + name + "($|\\s)", " ");
+				uiClass = uiClass.trim();
+
+				b.setAttribute("ui.class", uiClass);
+			}
+		}
 	}
 
 	/**

src/org/graphstream/boids/configExample.dgs

@@ -6,7 +6,7 @@ null 0 0
 #
 
 cg ui.quality ui.antialias
-cg ui.stylesheet="node { size: 4px; } edge { fill-color: grey; }"
+cg ui.stylesheet="node { size: 4px; } node.moustik { fill-color: #1d1d1d; } edge { fill-color: grey; }"
 
 #
 # gs-boids attributes
@@ -15,22 +15,26 @@ cg ui.stylesheet="node { size: 4px; } edge { fill-color: grey; }"
 cg boids.max_steps=8000
 cg boids.random_seed=2132134879
 cg boids.area=1
-cg boids.sleep_time=20
+cg boids.sleep_time=30
 
 #
 # Moustik species
 #
 
-cg boids.species.moustik=org.graphstream.boids.BoidSpecies
-cg boids.species.moustik.angle_of_view=0
-cg boids.species.moustik.view_zone=0.15
-cg boids.species.moustik.speed_factor=0.3
-cg boids.species.moustik.max_speed=1
-cg boids.species.moustik.min_speed=0.04
-cg boids.species.moustik.direction_factor=0.1
-cg boids.species.moustik.attraction_factor=0.5
-cg boids.species.moustik.repulsion_factor=0.001
-cg boids.species.moustik.inertia=1.1
-cg boids.species.moustik.trail=0
-cg boids.species.moustik.width=4
+cg boids.species.moustik=org.graphstream.boids.BoidSpecies # Create a new species using class BoidSpecies
+cg boids.species.moustik.angle_of_view=0                   # Set angleOfView of this species to 0
+cg boids.species.moustik.view_zone=0.15                    # Set viewZone
+cg boids.species.moustik.speed_factor=0.3                  # Set speedFactor
+cg boids.species.moustik.max_speed=1                       # Set maxSpeed
+cg boids.species.moustik.min_speed=0.04                    # Set minSpeed
+cg boids.species.moustik.direction_factor=0.1              # Set directionFactor
+cg boids.species.moustik.attraction_factor=0.5             # Set attractionFactor
+cg boids.species.moustik.repulsion_factor=0.001            # Set repulsionFactor
+cg boids.species.moustik.inertia=1.1                       # Set inertia
+cg boids.species.moustik.add_species_name_in_ui_class=true # Tell species to add its name in the 'ui.class' attribute
+#                                                             of node, so we can define a custom css for each species. 
+
+#
+# This last command create 100 boids of the moustik species
+#
 cg boids.species.moustik.count=100