/*
 * Copyright 2010 Jon S Akhtar (Sylvanaar)
 *
 *   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.sylvanaar.idea.Lua.editor.completion;

import com.intellij.codeInsight.lookup.CharFilter;
import com.intellij.codeInsight.lookup.Lookup;
import com.intellij.psi.PsiFile;
import com.sylvanaar.idea.Lua.LuaFileType;
import org.jetbrains.annotations.Nullable;

/**
 * Created by IntelliJ IDEA.
 * User: Jon S Akhtar
 * Date: Nov 21, 2010
 * Time: 6:53:07 PM
 */
public class LuaCharFilter extends CharFilter {
    @Nullable
    public Result acceptChar(char c, int pefixLength, Lookup lookup) {
        final PsiFile psiFile = lookup.getPsiFile();
        if (psiFile != null && !psiFile.getViewProvider().getLanguages().contains(LuaFileType.LUA_LANGUAGE))
            return null;

        if (Character.isJavaIdentifierPart(c) || c == '\'') {
            return Result.ADD_TO_PREFIX;
        }

        if (c == '\n' || c == '\t') {
            return Result.SELECT_ITEM_AND_FINISH_LOOKUP;
        }

        return null;
    }

}

add a char filter for completions so we can end the completion and start a new one