X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.g3d%2Fsrc%2Forg%2Fsimantics%2Fproconf%2Fg3d%2Fbase%2FGeometryProviderRegistry.java;fp=org.simantics.g3d%2Fsrc%2Forg%2Fsimantics%2Fproconf%2Fg3d%2Fbase%2FGeometryProviderRegistry.java;h=f734cd9e074a8bc0db33f805ab24efbc58eb27ef;hb=10f144a2bb2d7bec98b812b83acecb333fd098ea;hp=0000000000000000000000000000000000000000;hpb=3055b543aa5afc0cca4bb3b341704e7c5103fa6a;p=simantics%2F3d.git

diff --git a/org.simantics.g3d/src/org/simantics/proconf/g3d/base/GeometryProviderRegistry.java b/org.simantics.g3d/src/org/simantics/proconf/g3d/base/GeometryProviderRegistry.java
new file mode 100644
index 00000000..f734cd9e
--- /dev/null
+++ b/org.simantics.g3d/src/org/simantics/proconf/g3d/base/GeometryProviderRegistry.java
@@ -0,0 +1,149 @@
+/*******************************************************************************
+ * Copyright (c) 2007- VTT Technical Research Centre of Finland.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.proconf.g3d.base;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.core.runtime.CoreException;
+import org.eclipse.core.runtime.IConfigurationElement;
+import org.eclipse.core.runtime.IExtension;
+import org.eclipse.core.runtime.IExtensionPoint;
+import org.eclipse.core.runtime.Platform;
+import org.eclipse.core.runtime.dynamichelpers.ExtensionTracker;
+import org.eclipse.core.runtime.dynamichelpers.IExtensionChangeHandler;
+import org.eclipse.core.runtime.dynamichelpers.IExtensionTracker;
+import org.eclipse.core.runtime.dynamichelpers.IFilter;
+import org.simantics.db.Resource;
+import org.simantics.layer0.utils.IEntity;
+import org.simantics.utils.ui.ErrorLogger;
+
+import com.jme.scene.Geometry;
+
+public class GeometryProviderRegistry implements IExtensionChangeHandler {
+    private static GeometryProviderRegistry instance;
+    public final static String ELEMENT_NAME = "Geometry";
+    public final static String NAMESPACE = "org.simantics.proconf.g3d";
+    public final static String EP_NAME = "geometry";
+    
+    private ExtensionTracker tracker;
+    
+    private List<GeometryProviderExtension> extensions = new ArrayList<GeometryProviderExtension>();
+    private Map<Resource,GeometryProvider> providers;
+    
+    private GeometryProviderRegistry() {
+        providers = new HashMap<Resource,GeometryProvider>();
+        
+        tracker = new ExtensionTracker();
+		
+		IExtensionPoint ep = Platform.getExtensionRegistry().getExtensionPoint(NAMESPACE,EP_NAME);
+		loadExtensions(ep.getConfigurationElements());
+		
+		IFilter filter = ExtensionTracker.createExtensionPointFilter(ep);
+		tracker.registerHandler(this, filter);
+    }
+    
+    private void close() {
+		tracker.close();
+		tracker = null;
+		extensions = new ArrayList<GeometryProviderExtension>();
+	}
+    
+    public static synchronized GeometryProviderRegistry getInstance() {
+        if (instance==null) instance = new GeometryProviderRegistry();
+        return instance;
+    }
+    
+    public static synchronized void dispose() {
+		if (instance != null) {
+			instance.close();
+			instance = null;
+		}	
+	}
+    
+    public synchronized List<GeometryProviderExtension> getExtensions() {
+		return Collections.unmodifiableList(extensions);
+	}
+    
+    private synchronized void loadExtensions(IConfigurationElement[] elements) {
+		for (IConfigurationElement el : elements) {
+			String id = el.getAttribute("id");
+			try {
+				Object o = el.createExecutableExtension("class");
+				GeometryProviderExtension ext = new GeometryProviderExtension(id,(GeometryProvider)o);
+				tracker.registerObject(el.getDeclaringExtension(), ext, IExtensionTracker.REF_STRONG);
+				extensions.add(ext);
+			} catch (CoreException e) {
+				ErrorLogger.defaultLogError("Cannot create java interface for GeometryProvider " + id, e);
+			}
+		}
+	}
+    
+    private Map<Resource,GeometryProvider> getProviderMap() {
+        return providers;
+    }
+    
+    public static Geometry[] getGeometry(IEntity thing, boolean transform) {
+        GeometryProvider provider = getGeometryProvider(thing);
+        return provider.getGeometryFromResource(thing, transform);
+    }
+    
+    public static GeometryProvider getGeometryProvider(IEntity thing) {
+    	Collection<IEntity> types = thing.getRelatedObjects(thing.getGraph().getBuiltins().InstanceOf);
+        
+    	//Resource types[] = OntologyUtils.getTypes(resource);
+    	for (IEntity t : types) {
+    		GeometryProvider provider = getInstance().getProviderMap().get(t.getResource());
+        	if (provider == null) {
+                //for (Extension<GeometryProvider> e : getInstance().getExtensions()) {
+        		for (GeometryProviderExtension e : getInstance().getExtensions()) {
+                    if (e.provider.canHandle(thing)) {
+                        getInstance().getProviderMap().put(t.getResource(), e.provider);
+                        return e.provider;
+                    }
+                }
+                
+            } else {
+            	return provider;
+            }
+    	}
+    	
+    	throw new UnsupportedOperationException("Cannot handle resource " + thing);
+    }
+    
+    @Override
+    public void addExtension(IExtensionTracker tracker, IExtension extension) {
+        loadExtensions(extension.getConfigurationElements());
+    }
+    
+    @Override
+	public synchronized void removeExtension(IExtension extension, Object[] objects) {
+		for (Object o : objects) {
+			GeometryProviderExtension ext = (GeometryProviderExtension) o;
+			tracker.unregisterObject(extension, ext);
+			extensions.remove(ext);
+		}
+	}
+    
+    public class GeometryProviderExtension {
+		public String id;
+		public GeometryProvider provider;
+		
+		public GeometryProviderExtension(String id, GeometryProvider provider) {
+			this.id = id;
+			this.provider = provider;
+		}
+	}
+}