org.startica.meeniex.intellij.plugin.eclipseLikeEnterInStringLiteralHandler.editor.actionSystem.EclipseLikeEnterInStringLiteralHandler.java Source code

Introduction

Here is the source code for org.startica.meeniex.intellij.plugin.eclipseLikeEnterInStringLiteralHandler.editor.actionSystem.EclipseLikeEnterInStringLiteralHandler.java

Source

/*
 * Copyright (C) 2014 meeniex
 *      https://github.com/meeniex/
 *
 * The MIT License (MIT)
 *
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package org.startica.meeniex.intellij.plugin.eclipseLikeEnterInStringLiteralHandler.editor.actionSystem;

import com.intellij.codeInsight.editorActions.JavaLikeQuoteHandler;
import com.intellij.codeInsight.editorActions.QuoteHandler;
import com.intellij.codeInsight.editorActions.TypedHandler;
import com.intellij.codeInsight.editorActions.enter.EnterHandlerDelegateAdapter;
import com.intellij.lang.ASTNode;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.IdeActions;
import com.intellij.openapi.actionSystem.ex.ActionManagerEx;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Ref;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.PsiDocumentManager;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiFile;
import org.jetbrains.annotations.NotNull;

/**
 * At end of the "string literal", move caret to out of that.
 * Created by meeniex on 2014/12/06
 */
public class EclipseLikeEnterInStringLiteralHandler extends EnterHandlerDelegateAdapter {

    @Override
    public Result preprocessEnter(@NotNull PsiFile psiFile, @NotNull Editor editor,
            @NotNull Ref<Integer> caretOffsetRef, @NotNull Ref<Integer> caretAdvanceRef,
            @NotNull DataContext dataContext, EditorActionHandler originalHandler) {

        if (isSplitLineAction()) {
            return Result.Continue;
        }

        int caretOffset = caretOffsetRef.get();
        PsiElement psiAtOffset = psiFile.findElementAt(caretOffset);
        if (psiAtOffset != null && psiAtOffset.getTextOffset() < caretOffset) {
            final Project project = CommonDataKeys.PROJECT.getData(dataContext);
            final PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
            final Document document = editor.getDocument();
            ASTNode token = psiAtOffset.getNode();
            JavaLikeQuoteHandler quoteHandler = getJavaLikeQuoteHandler(editor, psiAtOffset);

            if (quoteHandler != null && quoteHandler.getConcatenatableStringTokenTypes() != null
                    && quoteHandler.getConcatenatableStringTokenTypes().contains(token.getElementType())) {
                TextRange range = token.getTextRange();

                if (caretOffset + 1 == range.getEndOffset()) {
                    caretOffset++;
                    caretOffsetRef.set(caretOffset);
                    editor.getCaretModel().moveToOffset(caretOffset);
                    documentManager.commitDocument(document);

                    return Result.Stop;
                }
            }
        }

        return Result.Continue;
    }

    private boolean isSplitLineAction() {
        ActionManagerEx actionManagerEx = ActionManagerEx.getInstanceEx();
        String prevPreformedActionId = actionManagerEx.getPrevPreformedActionId();
        String lastPreformedActionId = actionManagerEx.getLastPreformedActionId();

        return IdeActions.ACTION_EDITOR_SPLIT.equals(prevPreformedActionId)
                || IdeActions.ACTION_EDITOR_SPLIT.equals(lastPreformedActionId);
    }

    private JavaLikeQuoteHandler getJavaLikeQuoteHandler(Editor editor, PsiElement psiAtOffset) {
        final QuoteHandler fileTypeQuoteHandler = TypedHandler.getQuoteHandler(psiAtOffset.getContainingFile(),
                editor);
        return fileTypeQuoteHandler instanceof JavaLikeQuoteHandler ? (JavaLikeQuoteHandler) fileTypeQuoteHandler
                : null;
    }

}