001: /*
002: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
003: *
004: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
005: *
006: * The contents of this file are subject to the terms of either the GNU
007: * General Public License Version 2 only ("GPL") or the Common
008: * Development and Distribution License("CDDL") (collectively, the
009: * "License"). You may not use this file except in compliance with the
010: * License. You can obtain a copy of the License at
011: * http://www.netbeans.org/cddl-gplv2.html
012: * or nbbuild/licenses/CDDL-GPL-2-CP. See the License for the
013: * specific language governing permissions and limitations under the
014: * License. When distributing the software, include this License Header
015: * Notice in each file and include the License file at
016: * nbbuild/licenses/CDDL-GPL-2-CP. Sun designates this
017: * particular file as subject to the "Classpath" exception as provided
018: * by Sun in the GPL Version 2 section of the License file that
019: * accompanied this code. If applicable, add the following below the
020: * License Header, with the fields enclosed by brackets [] replaced by
021: * your own identifying information:
022: * "Portions Copyrighted [year] [name of copyright owner]"
023: *
024: * Contributor(s):
025: *
026: * The Original Software is NetBeans. The Initial Developer of the Original
027: * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun
028: * Microsystems, Inc. All Rights Reserved.
029: *
030: * If you wish your version of this file to be governed by only the CDDL
031: * or only the GPL Version 2, indicate your decision by adding
032: * "[Contributor] elects to include this software in this distribution
033: * under the [CDDL or GPL Version 2] license." If you do not indicate a
034: * single choice of license, a recipient has the option to distribute
035: * your version of this file under either the CDDL, the GPL Version 2 or
036: * to extend the choice of license to its licensees as provided above.
037: * However, if you add GPL Version 2 code and therefore, elected the GPL
038: * Version 2 license, then the option applies only if the new code is
039: * made subject to such option by the copyright holder.
040: */
041: package org.netbeans.modules.visualweb.propertyeditors;
042:
043: import com.sun.rave.propertyeditors.util.JavaInitializer;
044:
045: /**
046: * A basic in-line property editor for strings. This editor maps the empty
047: * text string to a null value, unlike the NetBeans string editor, which
048: * displays the string "null". A text string is considered empty if it has no
049: * characters, or consists of only space characters.
050: *
051: * <p>This editor is intended to be used with properties of type
052: * <code>java.lang.String</code>. Other value types may be used, but they will
053: * be converted to string by calling <code>toString()</code>.
054: *
055: * @author gjmurphy
056: */
057: public class StringPropertyEditor extends PropertyEditorBase implements
058: com.sun.rave.propertyeditors.StringPropertyEditor {
059:
060: public StringPropertyEditor() {
061: super .setValue("");
062: }
063:
064: public void setValue(Object value) {
065: super .setValue(value == null ? "" : value.toString());
066: }
067:
068: public Object getValue() {
069: String value = (String) super .getValue();
070: if (value.trim().length() == 0)
071: return null;
072: return value;
073: }
074:
075: public String getJavaInitializationString() {
076: return JavaInitializer
077: .toJavaInitializationString((String) getValue());
078: }
079:
080: public java.awt.Component getCustomEditor() {
081: return new StringPropertyPanel(this );
082: }
083:
084: public boolean supportsCustomEditor() {
085: return true;
086: }
087:
088: public void setAsText(String text) throws IllegalArgumentException {
089: if (text == null)
090: setValue(null);
091: setValue(unescapeString(text));
092: }
093:
094: public String getAsText() {
095: String value = (String) getValue();
096: if (value == null)
097: return "";
098: return escapeString(value);
099: }
100:
101: static String escapeString(String str) {
102: StringBuffer buffer = new StringBuffer();
103: char[] chars = str.toCharArray();
104: for (int i = 0; i < chars.length; i++) {
105: if (chars[i] == '\n') {
106: buffer.append("\\n");
107: } else if (chars[i] == '\t') {
108: buffer.append("\\t");
109: } else if (chars[i] == '\\') {
110: buffer.append("\\\\");
111: } else {
112: buffer.append(chars[i]);
113: }
114: }
115: if (buffer.length() == str.length())
116: return str;
117: return buffer.toString();
118: }
119:
120: static String unescapeString(String str) {
121: StringBuffer buffer = new StringBuffer();
122: char[] chars = str.toCharArray();
123: for (int i = 0; i < chars.length; i++) {
124: if (chars[i] == '\\' && i < chars.length - 1) {
125: i++;
126: if (chars[i] == '\\')
127: buffer.append("\\");
128: else if (chars[i] == 't')
129: buffer.append("\t");
130: else if (chars[i] == 'n')
131: buffer.append("\n");
132: } else {
133: buffer.append(chars[i]);
134: }
135: }
136: if (buffer.length() == str.length())
137: return str;
138: return buffer.toString();
139: }
140:
141: }
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