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/*
* Copyright 2000-2011 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.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.actionSystem.EditorAction;
import com.intellij.openapi.editor.actionSystem.EditorWriteActionHandler;
import org.jetbrains.annotations.NotNull;
/**
* Stands for emacs 'reverse-kill-line' action, i.e.
* <a href="http://www.gnu.org/software/emacs/manual/html_node/emacs/Killing-by-Lines.html">'kill-line' action</a>
* with negative argument.
*
* @author Denis Zhdanov
* @since 4/18/11 1:22 PM
*/
public class CutLineBackwardAction extends EditorAction {
public CutLineBackwardAction() {
super(new Handler());
}
static class Handler extends EditorWriteActionHandler {
@Override
public void executeWriteAction(Editor editor, DataContext dataContext) {
final Document document = editor.getDocument();
int caretOffset = editor.getCaretModel().getOffset();
if (caretOffset <= 0) {
return;
}
// The main idea is to kill everything between the current line start and caret and the whole previous line.
final int caretLine = document.getLineNumber(caretOffset);
int start;
if (caretLine <= 0) {
start = 0;
}
else {
start = document.getLineStartOffset(caretLine - 1);
}
KillRingUtil.cut(editor, start, caretOffset);
}
}
}
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