Merge branch 'eclipse-classpath-provider'

eclipse-language-servers/org.springframework.tooling.ls.eclipse.commons/META-INF/MANIFEST.MF

@@ -14,7 +14,8 @@ Require-Bundle: org.eclipse.jdt.launching;bundle-version="3.8.0",
  org.eclipse.jface.text,
  com.google.guava,
  org.eclipse.debug.ui,
- org.eclipse.ui.console
+ org.eclipse.ui.console,
+ org.springframework.tooling.jdt.ls.commons
 Bundle-RequiredExecutionEnvironment: JavaSE-1.8
 Bundle-ActivationPolicy: lazy
 Export-Package: org.springframework.tooling.ls.eclipse.commons,

eclipse-language-servers/org.springframework.tooling.ls.eclipse.commons/src/org/springframework/tooling/ls/eclipse/commons/LSP4ECommandExecutor.java

@@ -0,0 +1,55 @@
+/*******************************************************************************
+ * Copyright (c) 2018 Pivotal, Inc.
+ * 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:
+ *     Pivotal, Inc. - initial API and implementation
+ *******************************************************************************/
+package org.springframework.tooling.ls.eclipse.commons;
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.TimeUnit;
+import java.util.function.Predicate;
+
+import org.eclipse.lsp4e.LanguageServiceAccessor;
+import org.eclipse.lsp4j.ExecuteCommandOptions;
+import org.eclipse.lsp4j.ExecuteCommandParams;
+import org.eclipse.lsp4j.ServerCapabilities;
+import org.eclipse.lsp4j.services.LanguageServer;
+import org.springframework.tooling.jdt.ls.commons.classpath.ClientCommandExecutor;
+
+@SuppressWarnings("restriction")
+public class LSP4ECommandExecutor implements ClientCommandExecutor {
+
+	@Override
+	public Object executeClientCommand(String id, Object... params) throws Exception {
+		List<LanguageServer> commandHandlers = LanguageServiceAccessor.getLanguageServers(handlesCommand(id));
+		if (commandHandlers!=null) {
+			if (commandHandlers.size()==1) {
+				LanguageServer handler = commandHandlers.get(0);
+				return handler
+						.getWorkspaceService()
+						.executeCommand(new ExecuteCommandParams(id, Arrays.asList(params)))
+						.get(2, TimeUnit.SECONDS);
+			} else if (commandHandlers.size() > 1) {
+				throw new IllegalStateException("Multiple language servers have registered to handle command '"+id+"'");
+			}
+		}
+		throw new UnsupportedOperationException("No language server has registered to handle command '"+id+"'");
+	}
+
+	private Predicate<ServerCapabilities> handlesCommand(String id) {
+		return (serverCaps) -> {
+			ExecuteCommandOptions executeCommandProvider = serverCaps.getExecuteCommandProvider();
+			if (executeCommandProvider!=null) {
+				return executeCommandProvider.getCommands().contains(id);
+			}
+			return false;
+		};
+	}
+
+}

eclipse-language-servers/org.springframework.tooling.ls.eclipse.commons/src/org/springframework/tooling/ls/eclipse/commons/STS4LanguageClientImpl.java

@@ -40,6 +40,7 @@ import org.eclipse.ui.IWorkbenchWindow;
 import org.eclipse.ui.PlatformUI;
 import org.eclipse.ui.progress.UIJob;
 import org.eclipse.ui.texteditor.AbstractTextEditor;
+import org.springframework.tooling.jdt.ls.commons.classpath.ReusableClasspathListenerHandler;
 
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
@@ -47,6 +48,13 @@ import com.google.common.collect.ImmutableMap;
 @SuppressWarnings("restriction")
 public class STS4LanguageClientImpl extends LanguageClientImpl implements STS4LanguageClient {
 
+	private static ReusableClasspathListenerHandler classpathService = new ReusableClasspathListenerHandler(new LSP4ECommandExecutor());
+
+
+	public STS4LanguageClientImpl() {
+		System.out.println("Instantiatin STS4LanguageClientImpl");
+	}
+
 	private static final String ANNOTION_TYPE_ID = "org.springframework.tooling.bootinfo";
 
 	class UpdateHighlights extends UIJob {
@@ -178,12 +186,11 @@ public class STS4LanguageClientImpl extends LanguageClientImpl implements STS4La
 
 	@Override
 	public CompletableFuture<Object> addClasspathListener(ClasspathListenerParams params) {
-		return Futures.fail(new UnsupportedOperationException("Not implemented"));
+		return CompletableFuture.completedFuture(classpathService.addClasspathListener(params.getCallbackCommandId()));
 	}
 
 	@Override
-	public CompletableFuture<Object> removeClasspathListener(ClasspathListenerParams classpathListenerParams) {
-		return Futures.fail(new UnsupportedOperationException("Not implemented"));
+	public CompletableFuture<Object> removeClasspathListener(ClasspathListenerParams params) {
+		return CompletableFuture.completedFuture(classpathService.removeClasspathListener(params.getCallbackCommandId()));
 	}
-
 }

headless-services/jdt-ls-extension/org.springframework.tooling.jdt.ls.commons/src/org/springframework/tooling/jdt/ls/commons/classpath/ClientCommandExecutor.java

@@ -1,5 +1,5 @@
 package org.springframework.tooling.jdt.ls.commons.classpath;
 
 public interface ClientCommandExecutor {
-	Object executeClientCommand(String id, Object... params);
+	Object executeClientCommand(String id, Object... params) throws Exception;
 }