Java > Open Source Codes > org > netbeans > modules > palette > PaletteItemHandler


1 /*
2  * The contents of this file are subject to the terms of the Common Development
3  * and Distribution License (the License). You may not use this file except in
4  * compliance with the License.
5  *
6  * You can obtain a copy of the License at http://www.netbeans.org/cddl.html
7  * or http://www.netbeans.org/cddl.txt.
8  *
9  * When distributing Covered Code, include this CDDL Header Notice in each file
10  * and include the License file at http://www.netbeans.org/cddl.txt.
11  * If applicable, add the following below the CDDL Header, with the fields
12  * enclosed by brackets [] replaced by your own identifying information:
13  * "Portions Copyrighted [year] [name of copyright owner]"
14  *
15  * The Original Software is NetBeans. The Initial Developer of the Original
16  * Software is Sun Microsystems, Inc. Portions Copyright 1997-2006 Sun
17  * Microsystems, Inc. All Rights Reserved.
18  */
19
20 package org.netbeans.modules.palette;
21 import java.util.LinkedList ;
22 import java.util.List ;
23 import org.openide.util.NbBundle;
24 import org.xml.sax.Attributes ;
25 import org.xml.sax.SAXException ;
26 import org.xml.sax.helpers.DefaultHandler ;
27
28
29 /**
30  *
31  * @author Libor Kotouc
32  */
33 public final class PaletteItemHandler extends DefaultHandler {
34
35     private static final String XML_ROOT = "editor_palette_item"; // NOI18N
36 private static final String ATTR_VERSION = "version"; // NOI18N
37 private static final String TAG_BODY = "body"; // NOI18N
38 private static final String TAG_CLASS = "class"; // NOI18N
39 private static final String ATTR_CLASSNAME = "name"; // NOI18N
40 private static final String TAG_CUSTOMIZER = "customizer"; // NOI18N
41 private static final String ATTR_CUSTNAME = "name"; // NOI18N
42 private static final String TAG_ICON16 = "icon16"; // NOI18N
43 private static final String ATTR_URL = "urlvalue"; // NOI18N
44 private static final String TAG_ICON32 = "icon32"; // NOI18N
45 private static final String TAG_DESCRIPTION = "description"; // NOI18N
46 private static final String TAG_INLINE_DESCRIPTION = "inline-description"; // NOI18N
47 private static final String TAG_DISPLAY_NAME = "display-name"; // NOI18N
48 private static final String TAG_TOOLTIP = "tooltip"; // NOI18N
49 private static final String ATTR_BUNDLE = "localizing-bundle"; // NOI18N
50 private static final String ATTR_DISPLAY_NAME_KEY = "display-name-key"; // NOI18N
51 private static final String ATTR_TOOLTIP_KEY = "tooltip-key"; // NOI18N
52
53     private LinkedList <String > bodyLines;
54     private boolean insideBody = false;
55     
56     //raw data read from the file
57 private String body;
58     private String className;
59     
60     private String icon16URL;
61     private String icon32URL;
62     private String bundleName;
63     private String displayNameKey;
64     private String tooltipKey;
65     private String displayName;
66     private String tooltip;
67     
68     private StringBuffer textBuffer;
69     
70     public String getBody() { return body; }
71     public String getClassName() { return className; }
72     
73     public String getIcon16URL() { return icon16URL; }
74     public String getIcon32URL() { return icon32URL; }
75     public String getBundleName() { return bundleName; }
76     public String getDisplayNameKey() { return displayNameKey; }
77     public String getTooltipKey() { return tooltipKey; }
78     public String getDisplayName() { return displayName; }
79     public String getTooltip() { return tooltip; }
80     
81     public void startElement(String uri, String localName, String qName, Attributes attributes)
82         throws SAXException
83     {
84         if (XML_ROOT.equals(qName)) {
85             String version = attributes.getValue(ATTR_VERSION);
86             if (version == null) {
87                 String message = NbBundle.getBundle(PaletteItemHandler.class)
88                     .getString("MSG_UnknownEditorPaletteItemVersion"); // NOI18N
89 throw new SAXException (message);
90             } else if (!("1.0".equals(version) || "1.1".equals(version))) { // NOI18N
91 String message = NbBundle.getBundle(PaletteItemHandler.class)
92                     .getString("MSG_UnsupportedEditorPaletteItemVersion"); // NOI18N
93 throw new SAXException (message);
94             }
95         } else if (TAG_BODY.equals(qName)) {
96             bodyLines = new LinkedList <String >();
97             insideBody = true;
98         } else if (TAG_CLASS.equals(qName)) {
99             className = attributes.getValue(ATTR_CLASSNAME);
100         } else if (TAG_ICON16.equals(qName)) {
101             icon16URL = attributes.getValue(ATTR_URL);
102             // TODO support also class resource name for icons
103 } else if (TAG_ICON32.equals(qName)) {
104             icon32URL = attributes.getValue(ATTR_URL);
105             // TODO support also class resource name for icons
106 } else if (TAG_DESCRIPTION.equals(qName)) {
107             bundleName = attributes.getValue(ATTR_BUNDLE);
108             displayNameKey = attributes.getValue(ATTR_DISPLAY_NAME_KEY);
109             tooltipKey = attributes.getValue(ATTR_TOOLTIP_KEY);
110         } else if (TAG_INLINE_DESCRIPTION.equals(qName)) {
111             bundleName = null;
112             displayNameKey = null;
113             tooltipKey = null;
114         } else if (TAG_DISPLAY_NAME.equals(qName)) {
115             textBuffer = new StringBuffer ();
116         } else if (TAG_TOOLTIP.equals(qName)) {
117             textBuffer = new StringBuffer ();
118         }
119     }
120     
121     public void endElement(String uri, String localName, String qName) throws SAXException {
122
123         if (TAG_BODY.equals(qName)) {
124             insideBody = false;
125             body = trimSurroundingLines(bodyLines);
126         } else if( TAG_DISPLAY_NAME.equals(qName) ) {
127             displayName = textBuffer.toString();
128             textBuffer = null;
129         } else if( TAG_TOOLTIP.equals(qName) ) {
130             tooltip = textBuffer.toString();
131             textBuffer = null;
132         }
133     }
134     
135     public void characters(char buf[], int offset, int len)
136         throws SAXException
137     {
138         if (insideBody) {
139             String chars = new String (buf, offset, len).trim();
140             bodyLines.add(chars + "\n");
141         } else if( null != textBuffer ) {
142             textBuffer.append( buf, offset, len );
143         }
144     }
145
146     /**
147      * Trims empty lines from the beginning and the end of the line list
148      */
149     private String trimSurroundingLines(List <String > lines) {
150         
151         int nlines = lines.size();
152         
153         int firstNonEmpty = nlines;
154
155         //going from the beginning and skipping empty lines until the first nonempty line occurs
156 for (int i = 0; i < firstNonEmpty; i++) {
157             String line = (String )lines.get(i);
158             if (line.trim().length() != 0)
159                 firstNonEmpty = i;
160         }
161             
162         int lastNonEmpty = -1;
163         
164         //going from the end and skipping empty lines until the first nonempty line occurs
165 for (int i = nlines - 1; i > lastNonEmpty; i--) {
166             String line = lines.get(i);
167             if (line.trim().length() != 0)
168                 lastNonEmpty = i;
169         }
170
171         StringBuffer sb = new StringBuffer ();
172         for (int i = firstNonEmpty; i <= lastNonEmpty; i++)
173             sb.append(lines.get(i));
174         
175         String body = sb.toString();
176         if (body.length() > 0 && body.charAt(body.length() - 1) == '\n') // cut trailing new-line
177 body = body.substring(0, body.length() - 1);
178         
179         return body;
180     }
181 }
182
183

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