Migrated source code from Simantics SVN

[simantics/platform.git] / bundles / org.simantics.g2d / src / org / simantics / g2d / diagram / participant / ElementHeartbeater.java

diff --git a/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/participant/ElementHeartbeater.java b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/participant/ElementHeartbeater.java
new file mode 100644 (file)
index 0000000..fb60d66
--- /dev/null
+++ b/bundles/org.simantics.g2d/src/org/simantics/g2d/diagram/participant/ElementHeartbeater.java
@@ -0,0 +1,57 @@
+/*******************************************************************************\r
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
+ * in Industry THTH ry.\r
+ * All rights reserved. This program and the accompanying materials\r
+ * are made available under the terms of the Eclipse Public License v1.0\r
+ * which accompanies this distribution, and is available at\r
+ * http://www.eclipse.org/legal/epl-v10.html\r
+ *\r
+ * Contributors:\r
+ *     VTT Technical Research Centre of Finland - initial API and implementation\r
+ *******************************************************************************/\r
+package org.simantics.g2d.diagram.participant;\r
+\r
+import org.simantics.g2d.canvas.ICanvasContext;\r
+import org.simantics.g2d.canvas.impl.DependencyReflection.Dependency;\r
+import org.simantics.g2d.diagram.IDiagram;\r
+import org.simantics.g2d.element.IElement;\r
+import org.simantics.g2d.element.handler.Heartbeat;\r
+import org.simantics.g2d.participant.TimeParticipant;\r
+import org.simantics.scenegraph.g2d.events.TimeEvent;\r
+import org.simantics.scenegraph.g2d.events.EventHandlerReflection.EventHandler;\r
+\r
+/**\r
+ * This participant sends time events to Heartbeat element handlers.\r
+ * \r
+ * @See {@link Heartbeat}\r
+ * @author Toni Kalajainen\r
+ */\r
+public class ElementHeartbeater extends AbstractDiagramParticipant {\r
+\r
+    @Dependency TimeParticipant time;\r
+\r
+    @Override\r
+    public void addedToContext(ICanvasContext ctx) {\r
+        super.addedToContext(ctx);\r
+        time.registerForEvents(getClass());\r
+    }\r
+\r
+    @Override\r
+    public void removedFromContext(ICanvasContext ctx) {\r
+               time.unregisterForEvents(getClass());\r
+        super.removedFromContext(ctx);\r
+    }\r
+\r
+    @EventHandler(priority = 0)\r
+    public boolean handleHeartbeat(TimeEvent te) {\r
+        IDiagram d = diagram;\r
+        if (d==null) return false;\r
+        for (IElement e : d.getSnapshot())\r
+        {\r
+            for (Heartbeat hb : e.getElementClass().getItemsByClass(Heartbeat.class))\r
+                hb.heartbeat(e, te.time, te.interval, getContext());\r
+        }\r
+        return false;\r
+    }\r
+\r
+}\r