1 /*******************************************************************************
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2 * Copyright (c) 2007- VTT Technical Research Centre of Finland.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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9 * VTT Technical Research Centre of Finland - initial API and implementation
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10 *******************************************************************************/
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11 package org.simantics.proconf.g3d.base;
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13 import java.util.ArrayList;
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14 import java.util.Collection;
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15 import java.util.Collections;
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16 import java.util.HashMap;
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17 import java.util.List;
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18 import java.util.Map;
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20 import org.eclipse.core.runtime.CoreException;
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21 import org.eclipse.core.runtime.IConfigurationElement;
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22 import org.eclipse.core.runtime.IExtension;
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23 import org.eclipse.core.runtime.IExtensionPoint;
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24 import org.eclipse.core.runtime.Platform;
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25 import org.eclipse.core.runtime.dynamichelpers.ExtensionTracker;
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26 import org.eclipse.core.runtime.dynamichelpers.IExtensionChangeHandler;
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27 import org.eclipse.core.runtime.dynamichelpers.IExtensionTracker;
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28 import org.eclipse.core.runtime.dynamichelpers.IFilter;
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29 import org.simantics.db.Resource;
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30 import org.simantics.layer0.utils.IEntity;
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31 import org.simantics.utils.ui.ErrorLogger;
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33 import com.jme.renderer.Renderer;
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34 import com.jme.scene.state.RenderState;
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36 public class AppearanceProviderRegistry implements IExtensionChangeHandler {
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37 private static AppearanceProviderRegistry instance;
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38 //public final static String ELEMENT_NAME = "Appearance";
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39 public final static String NAMESPACE = "org.simantics.proconf.g3d";
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40 public final static String EP_NAME = "appearance";
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42 private ExtensionTracker tracker;
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44 private List<AppearanceProviderExtension> extensions = new ArrayList<AppearanceProviderExtension>();
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45 //private Map<Resource,AppearanceProvider> providers;
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47 private AppearanceProviderRegistry() {
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48 //providers = new HashMap<Resource,AppearanceProvider>();
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50 tracker = new ExtensionTracker();
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52 IExtensionPoint ep = Platform.getExtensionRegistry().getExtensionPoint(NAMESPACE,EP_NAME);
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53 loadExtensions(ep.getConfigurationElements());
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55 IFilter filter = ExtensionTracker.createExtensionPointFilter(ep);
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56 tracker.registerHandler(this, filter);
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59 private void close() {
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62 extensions = new ArrayList<AppearanceProviderExtension>();
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65 public static synchronized AppearanceProviderRegistry getInstance() {
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66 if (instance==null) instance = new AppearanceProviderRegistry();
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70 public static synchronized void dispose() {
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71 if (instance != null) {
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77 public synchronized List<AppearanceProviderExtension> getExtensions() {
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78 return Collections.unmodifiableList(extensions);
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81 private synchronized void loadExtensions(IConfigurationElement[] elements) {
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82 for (IConfigurationElement el : elements) {
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83 String id = el.getAttribute("id");
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85 Object o = el.createExecutableExtension("class");
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86 AppearanceProviderExtension ext = new AppearanceProviderExtension(id,(AppearanceProvider)o);
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87 tracker.registerObject(el.getDeclaringExtension(), ext, IExtensionTracker.REF_STRONG);
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88 extensions.add(ext);
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89 } catch (CoreException e) {
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90 ErrorLogger.defaultLogError("Cannot create java interface for GeometryProvider " + id, e);
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95 // private Map<Resource,AppearanceProvider> getProviderMap() {
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96 // return providers;
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99 public static Collection<RenderState> getAppearance(IEntity thing, Renderer renderer) {
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100 AppearanceProvider provider = getAppearanceProvider(thing);
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101 return provider.getAppearanceFromResource(thing, renderer);
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104 public static AppearanceProvider getAppearanceProvider(IEntity thing) {
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105 //Collection<IEntity> types = thing.getRelatedObjects(thing.getGraph().getBuiltins().InstanceOf);
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107 //Resource types[] = OntologyUtils.getTypes(resource);
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108 // for (IEntity t : types) {
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109 //AppearanceProvider provider = getInstance().getProviderMap().get(t.getResource());
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110 //if (provider == null) {
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111 //for (Extension<GeometryProvider> e : getInstance().getExtensions()) {
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112 for (AppearanceProviderExtension e : getInstance().getExtensions()) {
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113 if (e.provider.canHandle(thing)) {
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114 //getInstance().getProviderMap().put(t.getResource(), e.provider);
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120 // return provider;
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128 public void addExtension(IExtensionTracker tracker, IExtension extension) {
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129 loadExtensions(extension.getConfigurationElements());
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133 public synchronized void removeExtension(IExtension extension, Object[] objects) {
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134 for (Object o : objects) {
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135 AppearanceProviderExtension ext = (AppearanceProviderExtension) o;
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136 tracker.unregisterObject(extension, ext);
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137 extensions.remove(ext);
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141 public class AppearanceProviderExtension {
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143 public AppearanceProvider provider;
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145 public AppearanceProviderExtension(String id, AppearanceProvider provider) {
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147 this.provider = provider;
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