[GitHub] [netbeans] sdedic commented on a diff in pull request #4187: LSP: Open type command added.

[GitBox <gi...@apache.org>]

sdedic commented on code in PR #4187:
URL: https://github.com/apache/netbeans/pull/4187#discussion_r887784512


##########
java/java.lsp.server/src/org/netbeans/modules/java/lsp/server/protocol/QuickOpen.java:
##########
@@ -0,0 +1,135 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package org.netbeans.modules.java.lsp.server.protocol;
+
+import com.google.gson.Gson;
+import java.net.MalformedURLException;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import javax.lang.model.element.TypeElement;
+import org.eclipse.lsp4j.CodeAction;
+import org.eclipse.lsp4j.CodeActionParams;
+import org.eclipse.lsp4j.MessageParams;
+import org.eclipse.lsp4j.MessageType;
+import org.eclipse.lsp4j.Position;
+import org.eclipse.lsp4j.Range;
+import org.eclipse.lsp4j.ShowDocumentParams;
+import org.netbeans.api.java.project.JavaProjectConstants;
+import org.netbeans.api.java.source.ClassIndex;
+import org.netbeans.api.java.source.ClasspathInfo;
+import org.netbeans.api.java.source.ElementHandle;
+import org.netbeans.api.java.source.ui.ElementOpen;
+import org.netbeans.api.project.Project;
+import org.netbeans.api.project.ProjectUtils;
+import org.netbeans.api.project.SourceGroup;
+import org.netbeans.modules.java.lsp.server.LspServerState;
+import org.netbeans.modules.java.lsp.server.Utils;
+import org.netbeans.modules.parsing.api.ResultIterator;
+import org.openide.filesystems.FileObject;
+import org.openide.filesystems.URLMapper;
+import org.openide.util.Lookup;
+import org.openide.util.NbBundle;
+import org.openide.util.lookup.ServiceProvider;
+
+/**
+ *
+ * @author Dusan Balek
+ */
+@ServiceProvider(service = CodeActionsProvider.class)
+public class QuickOpen extends CodeActionsProvider {
+
+    public static final String QUICK_OPEN =  "java.quick.open"; // NOI18N
+    public static final String DEFAULT_PKG =  "<default package>"; // NOI18N
+    private final Gson gson = new Gson();
+
+    @Override
+    public Set<String> getCommands() {
+        return Collections.singleton(QUICK_OPEN);
+    }
+
+    @NbBundle.Messages({
+        "DN_SelectType=Select type to open",
+        "DN_NoTypeFound=No type found in openend projects"
+    })
+    @Override
+    public CompletableFuture<Object> processCommand(NbCodeLanguageClient client, String command, List<Object> arguments) {
+        LspServerState server = Lookup.getDefault().lookup(LspServerState.class);
+        if (server != null) {
+            return server.openedProjects().thenCompose(prjs -> {
+                ArrayList<QuickPickItem> items = new ArrayList<>();
+                for (Project prj : prjs) {
+                    for (SourceGroup sg : ProjectUtils.getSources(prj).getSourceGroups(JavaProjectConstants.SOURCES_TYPE_JAVA)) {
+                        FileObject root = sg.getRootFolder();
+                        for (ElementHandle<TypeElement> type : ClasspathInfo.create(root).getClassIndex().getDeclaredTypes("", ClassIndex.NameKind.PREFIX, EnumSet.of(ClassIndex.SearchScope.SOURCE))) {
+                            String qualifiedName = type.getQualifiedName();
+                            int idx = qualifiedName.lastIndexOf('.');
+                            String name = idx < 0 ? qualifiedName : qualifiedName.substring(idx + 1);
+                            String pkgName = idx < 0 ? DEFAULT_PKG : qualifiedName.substring(0, idx);
+                            items.add(new QuickPickItem(name, pkgName + " : " + root.toURI().toString(), null, false, new ElementData(type)));

Review Comment:
   Wow, this will be performance - marvellous for transfer & client processing in projects like Micronaut :)) but we can only use the UI that  Microsoft has allowed for us.



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