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/*
 * 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.lsp;

import java.util.List;
import java.util.concurrent.CompletableFuture;
import org.netbeans.api.annotations.common.NonNull;
import org.netbeans.api.lsp.Command;
import org.netbeans.api.lsp.Completion;
import org.netbeans.api.lsp.TextEdit;
import org.openide.util.Exceptions;
import org.openide.util.Parameters;


public abstract class CompletionAccessor {

    private static volatile CompletionAccessor DEFAULT;

    public static synchronized CompletionAccessor getDefault() {
        CompletionAccessor instance = DEFAULT;
        if (instance == null) {
            Class c = Completion.class;
            try {
                Class.forName(c.getName(), true, c.getClassLoader());
                instance = DEFAULT;
                assert instance != null;
            } catch (Exception ex) {
                Exceptions.printStackTrace(ex);
            }
        }
        return instance;
    }

    public static void setDefault(@NonNull final CompletionAccessor accessor) {
        Parameters.notNull("accessor", accessor);   //NOI18N
        if (DEFAULT != null) {
            throw new IllegalStateException("Accessor already initialized");
        }
        DEFAULT = accessor;
    }

    public abstract Completion createCompletion(String label, String labelDetail, String labelDescription, Completion.Kind kind, List tags, CompletableFuture detail, CompletableFuture documentation,
            boolean preselect, String sortText, String filterText, String insertText, Completion.TextFormat insertTextFormat,
            TextEdit textEdit, Command command, CompletableFuture> additionalTextEdits, List commitCharacters);
}