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1
19
20 package org.netbeans.modules.palette;
21 import java.io.IOException  ;
22 import java.lang.ref.Reference ;
23 import java.lang.ref.WeakReference ;
24 import org.openide.ErrorManager;
25 import org.openide.filesystems.FileObject;
26 import org.openide.loaders.DataNode;
27 import org.openide.loaders.DataObject;
28 import org.openide.loaders.Environment;
29 import org.openide.loaders.XMLDataObject;
30 import org.openide.nodes.Children;
31 import org.openide.nodes.Node;
32 import org.openide.util.Lookup;
33 import org.openide.util.lookup.AbstractLookup;
34 import org.openide.util.lookup.InstanceContent;
35 import org.openide.xml.EntityCatalog;
36 import org.openide.xml.XMLUtil;
37 import org.xml.sax.InputSource ;
38 import org.xml.sax.SAXException ;
39 import org.xml.sax.XMLReader ;
40
41
45 public class PaletteEnvironmentProvider implements Environment.Provider {
46
47 private static PaletteEnvironmentProvider createProvider() {
48 return new PaletteEnvironmentProvider();
49 }
50
51 private PaletteEnvironmentProvider() {
52 }
53
54
56 public Lookup getEnvironment(DataObject obj) {
57
58 PaletteItemNodeFactory nodeFactory = new PaletteItemNodeFactory((XMLDataObject)obj);
59 return nodeFactory.getLookup();
60 }
61
62
63 private static class PaletteItemNodeFactory implements InstanceContent.Convertor<Class ,PaletteItemNode> {
64
65
67 private XMLDataObject xmlDataObject = null;
68
69 private Lookup lookup = null;
70
71 Reference <PaletteItemNode> refNode = new WeakReference <PaletteItemNode>(null);
72
73 PaletteItemNodeFactory(XMLDataObject obj) {
74
75 xmlDataObject = obj;
76
77 InstanceContent content = new InstanceContent();
78 content.add(Node.class, this);
79
80 lookup = new AbstractLookup(content);
81 }
82
83 Lookup getLookup() {
84 return lookup;
85 }
86
87
89 public Class <? extends PaletteItemNode> type(Class obj) {
90 if( obj == Node.class )
91 return PaletteItemNode.class;
92 return null;
93 }
94
95 public String id(Class obj) {
96 return obj.toString();
97 }
98
99 public String displayName(Class obj) {
100 return obj.getName();
101 }
102
103 public PaletteItemNode convert(Class obj) {
104 PaletteItemNode o = null;
105 if (obj == Node.class) {
106 try {
107 o = getInstance();
108 } catch (Exception ex) {
109 ErrorManager.getDefault().notify(ex);
110 }
111 }
112
113 return o;
114 }
115
116
118 public synchronized PaletteItemNode getInstance() {
119
120 PaletteItemNode node = refNode.get();
121 if (node != null)
122 return node;
123
124 FileObject file = xmlDataObject.getPrimaryFile();
125 if (file.getSize() == 0L) return null;
127
128 PaletteItemHandler handler = new PaletteItemHandler();
129 try {
130 XMLReader reader = XMLUtil.createXMLReader(true);
131 reader.setContentHandler(handler);
132 reader.setEntityResolver(EntityCatalog.getDefault());
133 FileObject fo = xmlDataObject.getPrimaryFile();
134 String urlString = fo.getURL().toExternalForm();
135 InputSource is = new InputSource (fo.getInputStream());
136 is.setSystemId(urlString);
137 reader.parse(is);
138 }
139 catch (SAXException saxe) {
140 ErrorManager.getDefault().notify(ErrorManager.INFORMATIONAL, saxe);
141 }
142 catch (IOException ioe) {
143 ErrorManager.getDefault().notify(ErrorManager.INFORMATIONAL, ioe);
144 }
145
146 node = createPaletteItemNode(handler);
147 refNode = new WeakReference <PaletteItemNode>(node);
148
149 return node;
150 }
151
152 private PaletteItemNode createPaletteItemNode(PaletteItemHandler handler) {
153
154 String name = xmlDataObject.getName();
155
156 InstanceContent ic = new InstanceContent();
157 String s = handler.getClassName();
158 if (s != null)
159 ic.add(s, ActiveEditorDropProvider.getInstance());
160 else {
161 s = handler.getBody();
162 if (s != null)
163 ic.add(s, ActiveEditorDropDefaultProvider.getInstance());
164 }
165
166 return (null == handler.getDisplayName())
167 ? new PaletteItemNode(
168 new DataNode(xmlDataObject, Children.LEAF),
169 name,
170 handler.getBundleName(),
171 handler.getDisplayNameKey(),
172 handler.getClassName(),
173 handler.getTooltipKey(),
174 handler.getIcon16URL(),
175 handler.getIcon32URL(),
176 ic )
177 : new PaletteItemNode(
178 new DataNode(xmlDataObject, Children.LEAF),
179 name,
180 handler.getDisplayName(),
181 handler.getTooltip(),
182 handler.getIcon16URL(),
183 handler.getIcon32URL(),
184 ic );
185 }
186 }
187
188 }
189 |
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