Source Code Cross Referenced for LoaderTransfer.java in  » IDE-Netbeans » openide » org » openide » loaders » Java Source Code / Java DocumentationJava Source Code and Java Documentation

Java Source Code / Java Documentation
1. 6.0 JDK Core
2. 6.0 JDK Modules
3. 6.0 JDK Modules com.sun
4. 6.0 JDK Modules com.sun.java
5. 6.0 JDK Modules sun
6. 6.0 JDK Platform
7. Ajax
8. Apache Harmony Java SE
9. Aspect oriented
10. Authentication Authorization
11. Blogger System
12. Build
13. Byte Code
14. Cache
15. Chart
16. Chat
17. Code Analyzer
18. Collaboration
19. Content Management System
20. Database Client
21. Database DBMS
22. Database JDBC Connection Pool
23. Database ORM
24. Development
25. EJB Server geronimo
26. EJB Server GlassFish
27. EJB Server JBoss 4.2.1
28. EJB Server resin 3.1.5
29. ERP CRM Financial
30. ESB
31. Forum
32. GIS
33. Graphic Library
34. Groupware
35. HTML Parser
36. IDE
37. IDE Eclipse
38. IDE Netbeans
39. Installer
40. Internationalization Localization
41. Inversion of Control
42. Issue Tracking
43. J2EE
44. JBoss
45. JMS
46. JMX
47. Library
48. Mail Clients
49. Net
50. Parser
51. PDF
52. Portal
53. Profiler
54. Project Management
55. Report
56. RSS RDF
57. Rule Engine
58. Science
59. Scripting
60. Search Engine
61. Security
62. Sevlet Container
63. Source Control
64. Swing Library
65. Template Engine
66. Test Coverage
67. Testing
68. UML
69. Web Crawler
70. Web Framework
71. Web Mail
72. Web Server
73. Web Services
74. Web Services apache cxf 2.0.1
75. Web Services AXIS2
76. Wiki Engine
77. Workflow Engines
78. XML
79. XML UI
Java
Java Tutorial
Java Open Source
Jar File Download
Java Articles
Java Products
Java by API
Photoshop Tutorials
Maya Tutorials
Flash Tutorials
3ds-Max Tutorials
Illustrator Tutorials
GIMP Tutorials
C# / C Sharp
C# / CSharp Tutorial
C# / CSharp Open Source
ASP.Net
ASP.NET Tutorial
JavaScript DHTML
JavaScript Tutorial
JavaScript Reference
HTML / CSS
HTML CSS Reference
C / ANSI-C
C Tutorial
C++
C++ Tutorial
Ruby
PHP
Python
Python Tutorial
Python Open Source
SQL Server / T-SQL
SQL Server / T-SQL Tutorial
Oracle PL / SQL
Oracle PL/SQL Tutorial
PostgreSQL
SQL / MySQL
MySQL Tutorial
VB.Net
VB.Net Tutorial
Flash / Flex / ActionScript
VBA / Excel / Access / Word
XML
XML Tutorial
Microsoft Office PowerPoint 2007 Tutorial
Microsoft Office Excel 2007 Tutorial
Microsoft Office Word 2007 Tutorial
Java Source Code / Java Documentation » IDE Netbeans » openide » org.openide.loaders 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


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 1997-2006 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:
042:        package org.openide.loaders;
043:
044:        import java.awt.datatransfer.*;
045:        import java.awt.dnd.DnDConstants;
046:        import java.io.IOException;
047:        import java.text.MessageFormat;
048:        import java.util.logging.Level;
049:        import java.util.logging.Logger;
050:        import org.openide.util.datatransfer.*;
051:
052:        /** Class that contains specific datatransfer flavors and methods to work with
053:         * transfered DataObjects. There are flavors to allow a DataObject
054:         * to be copied or cut into clipboard, and to retrieve them from clipboard
055:         * when implementing paste operation.
056:         * <p>This is a dummy utility class--no instances are possible.
057:         *
058:         * @author  Vita Stejskal
059:         * @since 1.21
060:         */
061:        public abstract class LoaderTransfer {
062:
063:            /** Creates new LoaderTransfer */
064:            private LoaderTransfer() {
065:            }
066:
067:            /** Constants for drag-n-drop operations.
068:             * Are exactly the same as constants
069:             * in {@link DnDConstants}.
070:             */
071:            public static final int DND_NONE = DnDConstants.ACTION_NONE;
072:            public static final int DND_COPY = DnDConstants.ACTION_COPY;
073:            public static final int DND_MOVE = DnDConstants.ACTION_MOVE;
074:            public static final int DND_COPY_OR_MOVE = DnDConstants.ACTION_COPY
075:                    | DnDConstants.ACTION_MOVE;
076:            public static final int DND_LINK = DnDConstants.ACTION_LINK;
077:            public static final int DND_REFERENCE = DnDConstants.ACTION_LINK;
078:
079:            /** Constant indicating copying to the clipboard.
080:             * Equal to {@link #DND_COPY}, because
081:             * copy to clipboard and d'n'd copy should be the same.
082:             */
083:            public static final int CLIPBOARD_COPY = DND_COPY;
084:
085:            /** Constant indicating cutting to the clipboard.
086:             */
087:            public static final int CLIPBOARD_CUT = 0x04;
088:
089:            /** Generic mask for copying DataObjects (do not destroy the original).
090:             * Equal to {@link #CLIPBOARD_COPY} or {@link #DND_COPY}.
091:             */
092:            public static final int COPY = CLIPBOARD_COPY | DND_COPY;
093:
094:            /** Generic mask for moving DataObjects (destroy the original).
095:             * Equal to {@link #CLIPBOARD_CUT} or {@link #DND_MOVE}.
096:             */
097:            public static final int MOVE = CLIPBOARD_CUT | DND_MOVE;
098:
099:            /** message format to create and parse the mimetype
100:             */
101:            private static MessageFormat dndMimeType = new MessageFormat(
102:                    "application/x-java-openide-dataobjectdnd;class=org.openide.loaders.DataObject;mask={0}" // NOI18N
103:            );
104:
105:            /** Creates transferable that represents an operation, such as cut-to-clipboard.
106:             * The transferable will be recognizable by {@link #getDataObject} and {@link #getDataObjects}.
107:             *
108:             * @param d the DataObject to create a transferable for
109:             * @param actions the action performed on the DataObject's node
110:             * @return the transferable 
111:             */
112:            public static ExTransferable.Single transferable(
113:                    final DataObject d, int actions) {
114:                return new ExTransferable.Single(createDndFlavor(actions)) {
115:                    public Object getData() {
116:                        return d;
117:                    }
118:                };
119:            }
120:
121:            /** Obtain a DataObject from a transferable.
122:             * Probes the transferable in case it includes a flavor corresponding
123:             * to a DataObject's node operation (which you must specify a mask for).
124:             *
125:             * @param t transferable
126:             * @param action one of the <code>DND_*</code> or <code>CLIPBOARD_*</code> constants
127:             * @return the DataObject or <code>null</code>
128:             */
129:            public static DataObject getDataObject(Transferable t, int action) {
130:                DataFlavor[] flavors = t.getTransferDataFlavors();
131:                if (flavors == null) {
132:                    return null;
133:                }
134:                int len = flavors.length;
135:
136:                String subtype = "x-java-openide-dataobjectdnd"; // NOI18N
137:                String primary = "application"; // NOI18N
138:                String mask = "mask"; // NOI18N
139:
140:                for (int i = 0; i < len; i++) {
141:                    DataFlavor df = flavors[i];
142:
143:                    if (df.getSubType().equals(subtype)
144:                            && df.getPrimaryType().equals(primary)) {
145:                        try {
146:                            int m = Integer.valueOf(df.getParameter(mask))
147:                                    .intValue();
148:                            if ((m & action) != 0) {
149:                                // found the node
150:                                DataObject o = (DataObject) t
151:                                        .getTransferData(df);
152:                                if (o.isValid()) {
153:                                    return o;
154:                                } else {
155:                                    // #14344
156:                                    return null;
157:                                }
158:                            }
159:                        } catch (NumberFormatException nfe) {
160:                            maybeReportException(nfe);
161:                        } catch (ClassCastException cce) {
162:                            maybeReportException(cce);
163:                        } catch (IOException ioe) {
164:                            // #32206 - this exception is thrown when underlying fileobject
165:                            // does not exist and DataObject cannot be found for it. It happens when
166:                            // user copy a DataObject into clipboard, close NB, delete the file, 
167:                            // restart the NB. During the startup the clipboard content is checked and
168:                            // this exception is thrown.  It would be better to catch just FileStateInvalidException,
169:                            // but it gets wrapped into IOException in sun.awt.datatransfer.DataTransferer.
170:                            // Logging this exception as informative is too confusing.
171:                            // There is usually several exceptions logged for one clipboard object
172:                            // and users file it repeatedly as bug. Just log some explanation message instead.
173:                            DataObject.LOG
174:                                    .fine("Object in clipboard refers to a non existing file. "
175:                                            + ioe.toString()); //NOI18N
176:                        } catch (UnsupportedFlavorException ufe) {
177:                            maybeReportException(ufe);
178:                        }
179:                    }
180:                }
181:
182:                return null;
183:            }
184:
185:            /** Obtain a list of DataObjects from a transferable.
186:             * If there is only a single DataObject in the transferable, this will just return a singleton
187:             * array like {@link #getDataObject}.
188:             * If there is a {@link ExTransferable#multiFlavor multiple transfer} (of at least one element),
189:             * each element of which
190:             * contains a DataObject, then an array of these will be returned.
191:             * If neither of these things is true, <code>null</code> will be returned.
192:             * <p>This is a convenience method intended for those who wish to specially support pastes
193:             * of multiple DataObjects at once.
194:             * @param t the transferable to probe
195:             * @param action a DnD or clipboard constant
196:             * @return a non-empty array of nodes, or <code>null</code>
197:             */
198:            public static DataObject[] getDataObjects(Transferable t, int action) {
199:                try {
200:                    if (t.isDataFlavorSupported(ExTransferable.multiFlavor)) {
201:                        MultiTransferObject mto = (MultiTransferObject) t
202:                                .getTransferData(ExTransferable.multiFlavor);
203:                        int count = mto.getCount();
204:                        DataObject[] datas = new DataObject[count];
205:                        boolean ok = true;
206:                        for (int i = 0; i < count; i++) {
207:                            DataObject d = getDataObject(mto
208:                                    .getTransferableAt(i), action);
209:                            if (d == null) {
210:                                ok = false;
211:                                break;
212:                            } else {
213:                                datas[i] = d;
214:                            }
215:                        }
216:                        if (ok && count > 0)
217:                            return datas;
218:                    } else {
219:                        DataObject d = getDataObject(t, action);
220:                        if (d != null)
221:                            return new DataObject[] { d };
222:                    }
223:                } catch (ClassCastException cce) {
224:                    maybeReportException(cce);
225:                } catch (IOException ioe) {
226:                    maybeReportException(ioe);
227:                } catch (UnsupportedFlavorException ufe) {
228:                    maybeReportException(ufe);
229:                }
230:                return null;
231:            }
232:
233:            /** Creates data flavor for given mask of dnd actions.
234:             * @param actions any mask of dnd constants DND_* and CLIPBOARD_*
235:             */
236:            private static DataFlavor createDndFlavor(int actions) {
237:                try {
238:                    return new DataFlavor(dndMimeType
239:                            .format(new Object[] { new Integer(actions) }),
240:                            null, DataObject.class.getClassLoader());
241:                } catch (ClassNotFoundException ex) {
242:                    throw new AssertionError(ex);
243:                }
244:            }
245:
246:            /** Print a stack trace if debugging is on.
247:             * Used for exceptions that could occur when probing transferables,
248:             * which should not interrupt the probing with an error, but
249:             * indicate a bug elsewhere and should be reported somehow.
250:             * @param e the exception
251:             */
252:            private static void maybeReportException(Exception e) {
253:                Logger.getLogger(LoaderTransfer.class.getName()).log(
254:                        Level.WARNING, null, e);
255:            }
256:        }
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.