| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.netbeans.modules.javascript2.editor; |
| |
| import javax.swing.text.BadLocationException; |
| import javax.swing.text.Document; |
| import org.netbeans.api.editor.mimelookup.MimePath; |
| import org.netbeans.api.editor.mimelookup.MimeRegistration; |
| import org.netbeans.api.lexer.Token; |
| import org.netbeans.api.lexer.TokenSequence; |
| import org.netbeans.modules.javascript2.lexer.api.JsTokenId; |
| import org.netbeans.modules.javascript2.lexer.api.LexUtilities; |
| import org.netbeans.spi.editor.typinghooks.CamelCaseInterceptor; |
| |
| /** |
| * Replaced old KeystrokeHandler and takes care about delete word actions. |
| * |
| * @author Martin Fousek <marfous@netbeans.org> |
| */ |
| public class JsCamelCaseInterceptor implements CamelCaseInterceptor { |
| |
| @Override |
| public boolean beforeChange(MutableContext context) throws BadLocationException { |
| return false; |
| } |
| |
| @Override |
| public void change(final MutableContext context) throws BadLocationException { |
| final Document doc = context.getDocument(); |
| final int offset = context.getOffset(); |
| final boolean reverse = context.isBackward(); |
| doc.render(new Runnable() { |
| @Override |
| public void run() { |
| int nextOffset = getWordOffset(doc, offset, reverse); |
| context.setNextWordOffset(nextOffset); |
| } |
| }); |
| } |
| |
| @Override |
| public void afterChange(MutableContext context) throws BadLocationException { |
| } |
| |
| @Override |
| public void cancelled(MutableContext context) { |
| } |
| |
| protected static int getWordOffset(Document doc, int offset, boolean reverse) { |
| TokenSequence<? extends JsTokenId> ts = LexUtilities.getJsTokenSequence(doc, offset); |
| if (ts == null) { |
| return -1; |
| } |
| ts.move(offset); |
| if (!ts.moveNext() && !ts.movePrevious()) { |
| return -1; |
| } |
| if (reverse && ts.offset() == offset && !ts.movePrevious()) { |
| return -1; |
| } |
| |
| Token<? extends JsTokenId> token = ts.token(); |
| |
| if (token.id() == JsTokenId.WHITESPACE) { |
| // Eat up spaces |
| if ((reverse && ts.offset() < offset) || (!reverse && ts.offset() > offset)) { |
| return ts.offset(); |
| } |
| } |
| |
| if (token.id() == JsTokenId.IDENTIFIER) { |
| String image = token.text().toString(); |
| int imageLength = image.length(); |
| int offsetInImage = offset - ts.offset(); |
| |
| if (reverse) { |
| return getPreviousIdentifierWordOffset(ts, image, imageLength, offsetInImage); |
| } else { |
| return getNextIdentifierWordOffset(ts, image, imageLength, offsetInImage); |
| } |
| } |
| |
| return -1; |
| } |
| |
| private static int getPreviousIdentifierWordOffset(TokenSequence<? extends JsTokenId> ts, String image, int imageLength, int offsetInImage) { |
| offsetInImage = offsetInImage - 1; |
| if (offsetInImage < 0) { |
| return -1; |
| } |
| if (offsetInImage < imageLength && Character.isUpperCase(image.charAt(offsetInImage))) { |
| for (int i = offsetInImage - 1; i >= 0; i--) { |
| char charAtI = image.charAt(i); |
| if (!Character.isUpperCase(charAtI)) { |
| // return offset of previous uppercase char in the identifier |
| return ts.offset() + i + 1; |
| } |
| } |
| return ts.offset(); |
| } else { |
| for (int i = offsetInImage - 1; i >= 0; i--) { |
| char charAtI = image.charAt(i); |
| if (Character.isUpperCase(charAtI)) { |
| // now skip over previous uppercase chars in the identifier |
| for (int j = i; j >= 0; j--) { |
| char charAtJ = image.charAt(j); |
| if (!Character.isUpperCase(charAtJ)) { |
| // return offset of previous uppercase char in the identifier |
| return ts.offset() + j + 1; |
| } |
| } |
| return ts.offset(); |
| } |
| } |
| return ts.offset(); |
| } |
| } |
| |
| private static int getNextIdentifierWordOffset(TokenSequence<? extends JsTokenId> ts, String image, int imageLength, int offsetInImage) { |
| int start = offsetInImage + 1; |
| if (offsetInImage < 0 || offsetInImage >= image.length()) { |
| return -1; |
| } |
| if (Character.isUpperCase(image.charAt(offsetInImage))) { |
| // if starting from a Uppercase char, first skip over follwing upper case chars |
| for (int i = start; i < imageLength; i++) { |
| char charAtI = image.charAt(i); |
| if (!Character.isUpperCase(charAtI)) { |
| break; |
| } |
| start++; |
| } |
| } |
| for (int i = start; i < imageLength; i++) { |
| char charAtI = image.charAt(i); |
| if (Character.isUpperCase(charAtI)) { |
| return ts.offset() + i; |
| } |
| } |
| return ts.offset() + imageLength; |
| } |
| |
| @MimeRegistration(mimeType = "text/javascript", service = CamelCaseInterceptor.Factory.class) |
| public static class Factory implements CamelCaseInterceptor.Factory { |
| |
| @Override |
| public CamelCaseInterceptor createCamelCaseInterceptor(MimePath mimePath) { |
| return new JsCamelCaseInterceptor(); |
| } |
| } |
| } |