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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 14, 2002
* Time: 7:40:40 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.codeInsight.editorActions.SelectWordUtil;
import com.intellij.codeInsight.highlighting.BraceMatchingUtil;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.*;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.openapi.editor.highlighter.HighlighterIterator;
import com.intellij.openapi.project.DumbAware;
import com.intellij.openapi.util.TextRange;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.util.text.CharArrayUtil;
import java.util.ArrayList;
import java.util.List;
public class SelectWordAtCaretAction extends TextComponentEditorAction implements DumbAware {
public SelectWordAtCaretAction() {
super(new DefaultHandler());
setInjectedContext(true);
}
@Override
public EditorActionHandler getHandler() {
return new Handler(super.getHandler());
}
private static class DefaultHandler extends EditorActionHandler {
private DefaultHandler() {
super(true);
}
@Override
public void execute(Editor editor, DataContext dataContext) {
int lineNumber = editor.getCaretModel().getLogicalPosition().line;
int caretOffset = editor.getCaretModel().getOffset();
Document document = editor.getDocument();
if (lineNumber >= document.getLineCount()) {
return;
}
CharSequence text = document.getCharsSequence();
boolean camel = editor.getSettings().isCamelWords();
List<TextRange> ranges = new ArrayList<TextRange>();
int textLength = document.getTextLength();
if (caretOffset == textLength) caretOffset--;
if (caretOffset < 0) return;
SelectWordUtil.addWordSelection(camel, text, caretOffset, ranges);
if (ranges.isEmpty()) return;
int startWordOffset = Math.max(0, ranges.get(0).getStartOffset());
int endWordOffset = Math.min(ranges.get(0).getEndOffset(), document.getTextLength());
final SelectionModel selectionModel = editor.getSelectionModel();
if (camel && ranges.size() == 2 && selectionModel.getSelectionStart() == startWordOffset &&
selectionModel.getSelectionEnd() == endWordOffset) {
startWordOffset = Math.max(0, ranges.get(1).getStartOffset());
endWordOffset = Math.min(ranges.get(1).getEndOffset(), document.getTextLength());
}
if (startWordOffset >= selectionModel.getSelectionStart() && selectionModel.getSelectionEnd() >= endWordOffset && ranges.size() == 1) {
startWordOffset = 0;
endWordOffset = document.getTextLength();
}
selectionModel.setSelection(startWordOffset, endWordOffset);
}
}
private static class Handler extends EditorActionHandler {
private final EditorActionHandler myDefaultHandler;
private Handler(EditorActionHandler defaultHandler) {
super(true);
myDefaultHandler = defaultHandler;
}
@Override
public void execute(Editor editor, DataContext dataContext) {
final IndentGuideDescriptor guide = editor.getIndentsModel().getCaretIndentGuide();
final SelectionModel selectionModel = editor.getSelectionModel();
if (guide != null && !selectionModel.hasSelection() && !selectionModel.hasBlockSelection() && isWhitespaceAtCaret(editor)) {
selectWithGuide(editor, guide);
}
else {
myDefaultHandler.execute(editor, dataContext);
}
}
private static boolean isWhitespaceAtCaret(Editor editor) {
final Document doc = editor.getDocument();
final int offset = editor.getCaretModel().getOffset();
if (offset >= doc.getTextLength()) return false;
final char c = doc.getCharsSequence().charAt(offset);
return c == ' ' || c == '\t' || c == '\n';
}
private static void selectWithGuide(Editor editor, IndentGuideDescriptor guide) {
final Document doc = editor.getDocument();
int startOffset = editor.logicalPositionToOffset(new LogicalPosition(guide.startLine, 0));
int endOffset = guide.endLine >= doc.getLineCount() ? doc.getTextLength() : doc.getLineStartOffset(guide.endLine);
final VirtualFile file = ((EditorEx)editor).getVirtualFile();
if (file != null) {
// Make sure selection contains closing matching brace.
final CharSequence chars = doc.getCharsSequence();
int nonWhitespaceOffset = CharArrayUtil.shiftForward(chars, endOffset, " \t\n");
HighlighterIterator iterator = ((EditorEx)editor).getHighlighter().createIterator(nonWhitespaceOffset);
if (BraceMatchingUtil.isRBraceToken(iterator, chars, file.getFileType())) {
if (((EditorEx)editor).calcColumnNumber(iterator.getStart(), doc.getLineNumber(iterator.getStart())) == guide.indentLevel) {
endOffset = iterator.getEnd();
endOffset = CharArrayUtil.shiftForward(chars, endOffset, " \t");
if (endOffset < chars.length() && chars.charAt(endOffset) == '\n') endOffset++;
}
}
}
editor.getSelectionModel().setSelection(startOffset, endOffset);
}
}
}
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