TextCompletionCharFilter.java

/*
 * Copyright 2000-2016 JetBrains s.r.o.
 *
 * Licensed 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 com.intellij.util.textCompletion;

import com.intellij.codeInsight.lookup.CharFilter;
import com.intellij.codeInsight.lookup.Lookup;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

public class TextCompletionCharFilter extends CharFilter {
  @Nullable
  @Override
  public Result acceptChar(char c, int prefixLength, @NotNull Lookup lookup) {
    if (!lookup.isCompletion()) return null;
    PsiFile file = lookup.getPsiFile();
    if (file == null) return null;
    TextCompletionProvider provider = TextCompletionUtil.getProvider(file);
    if (provider != null) return provider.acceptChar(c);
    return null;
  }
}