| /* |
| * 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: 8:26:04 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.injected.editor.EditorWindow; |
| 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; |
| |
| public class BackspaceAction extends EditorAction { |
| public BackspaceAction() { |
| super(new Handler()); |
| } |
| |
| private static class Handler extends EditorWriteActionHandler { |
| private Handler() { |
| super(true); |
| } |
| |
| @Override |
| public void executeWriteAction(Editor editor, DataContext dataContext) { |
| MacUIUtil.hideCursor(); |
| CommandProcessor.getInstance().setCurrentCommandGroupId(EditorActionUtil.DELETE_COMMAND_GROUP); |
| if (editor instanceof EditorWindow) { |
| // manipulate actual document/editor instead of injected |
| // since the latter have trouble finding the right location of caret movement in the case of multi-shred injected fragments |
| editor = ((EditorWindow)editor).getDelegate(); |
| } |
| final SelectionModel selectionModel = editor.getSelectionModel(); |
| if (selectionModel.hasBlockSelection()) { |
| final LogicalPosition start = selectionModel.getBlockStart(); |
| final LogicalPosition end = selectionModel.getBlockEnd(); |
| int column = Math.min(start.column, end.column); |
| int startLine = Math.min(start.line, end.line); |
| int endLine = Math.max(start.line, end.line); |
| EditorModificationUtil.deleteBlockSelection(editor); |
| if (column > 0 && start.column == end.column) { |
| for (int i = startLine; i <= endLine; i++) { |
| editor.getCaretModel().moveToLogicalPosition(new LogicalPosition(i, column)); |
| doBackSpaceAtCaret(editor); |
| } |
| column--; |
| } |
| final int newColumn = Math.max(column, 0); |
| selectionModel.setBlockSelection(new LogicalPosition(startLine, newColumn), new LogicalPosition(endLine, newColumn)); |
| return; |
| } |
| |
| doBackSpaceAtCaret(editor); |
| } |
| } |
| |
| private static void doBackSpaceAtCaret(@NotNull Editor editor) { |
| if(editor.getSelectionModel().hasSelection()) { |
| doBackspaceAction(editor); |
| return; |
| } |
| |
| int lineNumber = editor.getCaretModel().getLogicalPosition().line; |
| int colNumber = editor.getCaretModel().getLogicalPosition().column; |
| Document document = editor.getDocument(); |
| int offset = editor.getCaretModel().getOffset(); |
| if(colNumber > 0) { |
| if(EditorModificationUtil.calcAfterLineEnd(editor) > 0) { |
| int columnShift = -1; |
| editor.getCaretModel().moveCaretRelatively(columnShift, 0, false, false, true); |
| } |
| else { |
| editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE); |
| editor.getSelectionModel().removeSelection(); |
| |
| FoldRegion region = editor.getFoldingModel().getCollapsedRegionAtOffset(offset - 1); |
| if (region != null && region.shouldNeverExpand()) { |
| document.deleteString(region.getStartOffset(), region.getEndOffset()); |
| editor.getCaretModel().moveToOffset(region.getStartOffset()); |
| } |
| else { |
| document.deleteString(offset - 1, offset); |
| editor.getCaretModel().moveToOffset(offset - 1, true); |
| } |
| } |
| } |
| else if(lineNumber > 0) { |
| int separatorLength = document.getLineSeparatorLength(lineNumber - 1); |
| int lineEnd = document.getLineEndOffset(lineNumber - 1) + separatorLength; |
| document.deleteString(lineEnd - separatorLength, lineEnd); |
| editor.getCaretModel().moveToOffset(lineEnd - separatorLength); |
| editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE); |
| editor.getSelectionModel().removeSelection(); |
| // Do not group delete newline and other deletions. |
| CommandProcessor commandProcessor = CommandProcessor.getInstance(); |
| commandProcessor.setCurrentCommandGroupId(null); |
| } |
| } |
| |
| static void doBackspaceAction(@NotNull Editor editor) { |
| int newOffset = editor.getSelectionModel().getSelectionStart(); |
| editor.getCaretModel().moveToOffset(newOffset); |
| editor.getScrollingModel().scrollToCaret(ScrollType.RELATIVE); |
| EditorModificationUtil.deleteSelectedText(editor); |
| } |
| } |