| /* PlainDocument.java -- |
| Copyright (C) 2002, 2004 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath is distributed in the hope that it will be useful, but |
| WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| |
| package javax.swing.text; |
| |
| import java.util.ArrayList; |
| |
| public class PlainDocument extends AbstractDocument |
| { |
| private static final long serialVersionUID = 4758290289196893664L; |
| |
| public static final String lineLimitAttribute = "lineLimit"; |
| public static final String tabSizeAttribute = "tabSize"; |
| |
| private Element rootElement; |
| private int tabSize; |
| |
| public PlainDocument() |
| { |
| this(new GapContent()); |
| } |
| |
| public PlainDocument(AbstractDocument.Content content) |
| { |
| super(content); |
| tabSize = 8; |
| rootElement = createDefaultRoot(); |
| } |
| |
| private void reindex() |
| { |
| Element[] lines; |
| try |
| { |
| String str = content.getString(0, content.length()); |
| |
| ArrayList elts = new ArrayList(); |
| int j = 0; |
| for (int i = str.indexOf('\n', 0); i != -1; i = str.indexOf('\n', i + 1)) |
| { |
| elts.add(createLeafElement(rootElement, SimpleAttributeSet.EMPTY, j, i + 1)); |
| j = i + 1; |
| } |
| |
| if (j < content.length()) |
| elts.add(createLeafElement(rootElement, SimpleAttributeSet.EMPTY, j, content.length())); |
| |
| lines = new Element[elts.size()]; |
| for (int i = 0; i < elts.size(); ++i) |
| lines[i] = (Element) elts.get(i); |
| } |
| catch (BadLocationException e) |
| { |
| lines = new Element[1]; |
| lines[0] = createLeafElement(rootElement, SimpleAttributeSet.EMPTY, 0, 1); |
| } |
| |
| ((BranchElement) rootElement).replace(0, rootElement.getElementCount(), lines); |
| } |
| |
| protected AbstractDocument.AbstractElement createDefaultRoot() |
| { |
| BranchElement root = |
| (BranchElement) createBranchElement(null, SimpleAttributeSet.EMPTY); |
| |
| Element[] array = new Element[1]; |
| array[0] = createLeafElement(root, SimpleAttributeSet.EMPTY, 0, 1); |
| root.replace(0, 0, array); |
| |
| return root; |
| } |
| |
| protected void insertUpdate(DefaultDocumentEvent event, AttributeSet attributes) |
| { |
| reindex(); |
| |
| super.insertUpdate(event, attributes); |
| } |
| |
| protected void removeUpdate(DefaultDocumentEvent event) |
| { |
| reindex(); |
| |
| super.removeUpdate(event); |
| } |
| |
| public Element getDefaultRootElement() |
| { |
| return rootElement; |
| } |
| |
| public Element getParagraphElement(int pos) |
| { |
| Element root = getDefaultRootElement(); |
| return root.getElement(root.getElementIndex(pos)); |
| } |
| } |