com.intellij.codeInsight.editorActions.smartEnter.CommentBreakerEnterProcessor.java Source code

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Here is the source code for com.intellij.codeInsight.editorActions.smartEnter.CommentBreakerEnterProcessor.java

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/*
 * Copyright 2000-2009 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.codeInsight.editorActions.smartEnter;

import com.intellij.openapi.actionSystem.IdeActions;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorModificationUtil;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.editor.actionSystem.EditorActionManager;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.psi.JavaTokenType;
import com.intellij.psi.PsiComment;
import com.intellij.psi.PsiElement;
import com.intellij.psi.util.PsiTreeUtil;

/**
 * Created by IntelliJ IDEA.
 * User: max
 * Date: Sep 8, 2003
 * Time: 2:57:38 PM
 * To change this template use Options | File Templates.
 */
public class CommentBreakerEnterProcessor implements EnterProcessor {
    @Override
    public boolean doEnter(Editor editor, PsiElement psiElement, boolean isModified) {
        if (isModified)
            return false;
        final PsiElement atCaret = psiElement.getContainingFile().findElementAt(editor.getCaretModel().getOffset());
        final PsiComment comment = PsiTreeUtil.getParentOfType(atCaret, PsiComment.class, false);
        if (comment != null) {
            plainEnter(editor);
            if (comment.getTokenType() == JavaTokenType.END_OF_LINE_COMMENT) {
                EditorModificationUtil.insertStringAtCaret(editor, "// ");
            }
            return true;
        }
        return false;
    }

    private static void plainEnter(Editor editor) {
        getEnterHandler().execute(editor, ((EditorEx) editor).getDataContext());
    }

    private static EditorActionHandler getEnterHandler() {
        return EditorActionManager.getInstance().getActionHandler(IdeActions.ACTION_EDITOR_START_NEW_LINE);
    }

}