Iniital checkin

com.minres.rdl.parent/com.minres.rdl.ui/src-gen/com/minres/rdl/ui/internal/RdlActivator.java

@@ -0,0 +1,93 @@
+/*
+ * generated by Xtext 2.12.0
+ */
+package com.minres.rdl.ui.internal;
+
+import com.google.common.collect.Maps;
+import com.google.inject.Guice;
+import com.google.inject.Injector;
+import com.google.inject.Module;
+import com.minres.rdl.RDLRuntimeModule;
+import com.minres.rdl.ui.RDLUiModule;
+import java.util.Collections;
+import java.util.Map;
+import org.apache.log4j.Logger;
+import org.eclipse.ui.plugin.AbstractUIPlugin;
+import org.eclipse.xtext.ui.shared.SharedStateModule;
+import org.eclipse.xtext.util.Modules2;
+import org.osgi.framework.BundleContext;
+
+/**
+ * This class was generated. Customizations should only happen in a newly
+ * introduced subclass. 
+ */
+public class RdlActivator extends AbstractUIPlugin {
+
+	public static final String COM_MINRES_RDL_RDL = "com.minres.rdl.RDL";
+	
+	private static final Logger logger = Logger.getLogger(RdlActivator.class);
+	
+	private static RdlActivator INSTANCE;
+	
+	private Map<String, Injector> injectors = Collections.synchronizedMap(Maps.<String, Injector> newHashMapWithExpectedSize(1));
+	
+	@Override
+	public void start(BundleContext context) throws Exception {
+		super.start(context);
+		INSTANCE = this;
+	}
+	
+	@Override
+	public void stop(BundleContext context) throws Exception {
+		injectors.clear();
+		INSTANCE = null;
+		super.stop(context);
+	}
+	
+	public static RdlActivator getInstance() {
+		return INSTANCE;
+	}
+	
+	public Injector getInjector(String language) {
+		synchronized (injectors) {
+			Injector injector = injectors.get(language);
+			if (injector == null) {
+				injectors.put(language, injector = createInjector(language));
+			}
+			return injector;
+		}
+	}
+	
+	protected Injector createInjector(String language) {
+		try {
+			Module runtimeModule = getRuntimeModule(language);
+			Module sharedStateModule = getSharedStateModule();
+			Module uiModule = getUiModule(language);
+			Module mergedModule = Modules2.mixin(runtimeModule, sharedStateModule, uiModule);
+			return Guice.createInjector(mergedModule);
+		} catch (Exception e) {
+			logger.error("Failed to create injector for " + language);
+			logger.error(e.getMessage(), e);
+			throw new RuntimeException("Failed to create injector for " + language, e);
+		}
+	}
+	
+	protected Module getRuntimeModule(String grammar) {
+		if (COM_MINRES_RDL_RDL.equals(grammar)) {
+			return new RDLRuntimeModule();
+		}
+		throw new IllegalArgumentException(grammar);
+	}
+	
+	protected Module getUiModule(String grammar) {
+		if (COM_MINRES_RDL_RDL.equals(grammar)) {
+			return new RDLUiModule(this);
+		}
+		throw new IllegalArgumentException(grammar);
+	}
+	
+	protected Module getSharedStateModule() {
+		return new SharedStateModule();
+	}
+	
+}