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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.
*/
/*
* Created by IntelliJ IDEA.
* User: max
* Date: May 13, 2002
* Time: 9:35:30 PM
* To change template for new class use
* Code Style | Class Templates options (Tools | IDE Options).
*/
package com.intellij.openapi.editor.actions;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.command.CommandProcessor;
import com.intellij.openapi.editor.*;
import com.intellij.openapi.editor.actionSystem.EditorAction;
import com.intellij.openapi.editor.actionSystem.EditorWriteActionHandler;
import com.intellij.util.ui.MacUIUtil;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class EnterAction extends EditorAction {
public EnterAction() {
super(new Handler());
setInjectedContext(true);
}
private static class Handler extends EditorWriteActionHandler {
public Handler() {
super(true);
}
@Override
public void executeWriteAction(Editor editor, @Nullable Caret caret, DataContext dataContext) {
CommandProcessor.getInstance().setCurrentCommandName(EditorBundle.message("typing.command.name"));
insertNewLineAtCaret(editor);
}
@Override
public boolean isEnabledForCaret(@NotNull Editor editor, @NotNull Caret caret, DataContext dataContext) {
return !editor.isOneLineMode();
}
}
public static void insertNewLineAtCaret(Editor editor) {
MacUIUtil.hideCursor();
if(!editor.isInsertMode()) {
if(editor.getCaretModel().getLogicalPosition().line < editor.getDocument().getLineCount()-1) {
LogicalPosition pos = new LogicalPosition(editor.getCaretModel().getLogicalPosition().line+1, 0);
editor.getCaretModel().moveToLogicalPosition(pos);
editor.getSelectionModel().removeSelection();
editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
}
return;
}
EditorModificationUtil.deleteSelectedText(editor);
// Smart indenting here:
Document document = editor.getDocument();
CharSequence text = document.getCharsSequence();
int indentLineNum = editor.getCaretModel().getLogicalPosition().line;
int lineLength = 0;
if (document.getLineCount() > 0) {
for(;indentLineNum >= 0; indentLineNum--) {
lineLength = document.getLineEndOffset(indentLineNum) - document.getLineStartOffset(indentLineNum);
if(lineLength > 0)
break;
}
} else {
indentLineNum = -1;
}
int colNumber = editor.getCaretModel().getLogicalPosition().column;
StringBuilder buf = new StringBuilder();
if(indentLineNum >= 0) {
int lineStartOffset = document.getLineStartOffset(indentLineNum);
for(int i = 0; i < lineLength; i++) {
char c = text.charAt(lineStartOffset + i);
if(c != ' ' && c != '\t') {
break;
}
if(i >= colNumber) {
break;
}
buf.append(c);
}
}
int caretOffset = editor.getCaretModel().getOffset();
String s = "\n"+buf;
document.insertString(caretOffset, s);
editor.getCaretModel().moveToOffset(caretOffset + s.length());
editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE);
editor.getSelectionModel().removeSelection();
}
}
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