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/*
* Copyright 2000-2014 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.openapi.editor.actions;
import com.intellij.ide.DataManager;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.actionSystem.IdeActions;
import com.intellij.openapi.editor.*;
import com.intellij.openapi.editor.actionSystem.EditorAction;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.editor.actionSystem.EditorActionManager;
import com.intellij.openapi.editor.actionSystem.EditorWriteActionHandler;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.openapi.ide.CopyPasteManager;
import com.intellij.openapi.util.Key;
import com.intellij.util.text.CharArrayUtil;
import org.jetbrains.annotations.NotNull;
/**
* @author max
*/
public class SplitLineAction extends EditorAction {
public static Key<Boolean> SPLIT_LINE_KEY = Key.create("com.intellij.openapi.editor.actions.SplitLineAction");
public SplitLineAction() {
super(new Handler());
setEnabledInModalContext(false);
}
private static class Handler extends EditorWriteActionHandler {
public Handler() {
super(true);
}
@Override
public boolean isEnabledForCaret(@NotNull Editor editor, @NotNull Caret caret, DataContext dataContext) {
return getEnterHandler().isEnabled(editor, caret, dataContext) &&
!((EditorEx)editor).isEmbeddedIntoDialogWrapper();
}
@Override
public void executeWriteAction(Editor editor, Caret caret, DataContext dataContext) {
CopyPasteManager.getInstance().stopKillRings();
final Document document = editor.getDocument();
final RangeMarker rangeMarker =
document.createRangeMarker(editor.getCaretModel().getOffset(), editor.getCaretModel().getOffset() );
final CharSequence chars = document.getCharsSequence();
int offset = editor.getCaretModel().getOffset();
int lineStart = document.getLineStartOffset(document.getLineNumber(offset));
final CharSequence beforeCaret = chars.subSequence(lineStart, offset);
if (CharArrayUtil.containsOnlyWhiteSpaces(beforeCaret)) {
String strToInsert = "";
if (beforeCaret != null) {
strToInsert += beforeCaret.toString();
}
strToInsert += "\n";
document.insertString(lineStart, strToInsert);
editor.getCaretModel().moveToOffset(offset);
} else {
DataManager.getInstance().saveInDataContext(dataContext, SPLIT_LINE_KEY, true);
try {
getEnterHandler().execute(editor, caret, dataContext);
}
finally {
DataManager.getInstance().saveInDataContext(dataContext, SPLIT_LINE_KEY, null);
}
editor.getCaretModel().moveToOffset(Math.min(document.getTextLength(), rangeMarker.getStartOffset()));
editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
}
}
private static EditorActionHandler getEnterHandler() {
return EditorActionManager.getInstance().getActionHandler(IdeActions.ACTION_EDITOR_ENTER);
}
}
}
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