Source Code Cross Referenced for MFileDialogPeer.java in  » 6.0-JDK-Platform » solaris » sun » awt » motif » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » 6.0 JDK Platform » solaris » sun.awt.motif 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * Copyright 1995-2003 Sun Microsystems, Inc.  All Rights Reserved.
003:         * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004:         *
005:         * This code is free software; you can redistribute it and/or modify it
006:         * under the terms of the GNU General Public License version 2 only, as
007:         * published by the Free Software Foundation.  Sun designates this
008:         * particular file as subject to the "Classpath" exception as provided
009:         * by Sun in the LICENSE file that accompanied this code.
010:         *
011:         * This code is distributed in the hope that it will be useful, but WITHOUT
012:         * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013:         * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014:         * version 2 for more details (a copy is included in the LICENSE file that
015:         * accompanied this code).
016:         *
017:         * You should have received a copy of the GNU General Public License version
018:         * 2 along with this work; if not, write to the Free Software Foundation,
019:         * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020:         *
021:         * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022:         * CA 95054 USA or visit www.sun.com if you need additional information or
023:         * have any questions.
024:         */
025:        package sun.awt.motif;
026:
027:        import java.awt.*;
028:        import java.awt.peer.*;
029:        import java.io.*;
030:        import java.awt.datatransfer.*;
031:        import java.util.ArrayList;
032:        import sun.awt.datatransfer.ToolkitThreadBlockedHandler;
033:
034:        public class MFileDialogPeer extends MDialogPeer implements 
035:                FileDialogPeer {
036:            private FilenameFilter filter;
037:            private String[] NativeFilteredFiles;
038:
039:            native void create(MComponentPeer parent);
040:
041:            void create(MComponentPeer parent, Object arg) {
042:                create(parent);
043:            }
044:
045:            public MFileDialogPeer(FileDialog target) {
046:                super (target);
047:                FileDialog fdialog = (FileDialog) target;
048:                String dir = fdialog.getDirectory();
049:                String file = fdialog.getFile();
050:                FilenameFilter filter = fdialog.getFilenameFilter();
051:
052:                insets = new Insets(0, 0, 0, 0);
053:                setDirectory(dir);
054:                if (file != null) {
055:                    setFile(file);
056:                }
057:                setFilenameFilter(filter);
058:            }
059:
060:            native void pReshape(int x, int y, int width, int height);
061:
062:            native void pDispose();
063:
064:            native void pShow();
065:
066:            native void pHide();
067:
068:            native void setFileEntry(String dir, String file, String[] ffiles);
069:
070:            native void insertReplaceFileDialogText(String l);
071:
072:            public native void setFont(Font f);
073:
074:            String getFilteredFile(String file) {
075:                if (file == null) {
076:                    file = ((FileDialog) target).getFile();
077:                }
078:                String dir = ((FileDialog) target).getDirectory();
079:                if (dir == null) {
080:                    dir = "./";
081:                }
082:                if (file == null) {
083:                    file = "";
084:                }
085:                if (filter != null && !filter.accept(new File(dir), file)) {
086:                    file = "";
087:                }
088:                return file;
089:            }
090:
091:            // NOTE: This method is called by privileged threads.
092:            //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
093:            public void handleSelected(final String file) {
094:                final FileDialog fileDialog = (FileDialog) target;
095:                MToolkit.executeOnEventHandlerThread(fileDialog,
096:                        new Runnable() {
097:                            public void run() {
098:                                int index = file
099:                                        .lastIndexOf(java.io.File.separatorChar);/*2509*//*ibm*/
100:                                String dir;
101:
102:                                if (index == -1) {
103:                                    dir = "." + java.io.File.separator;
104:                                    fileDialog.setFile(file);
105:                                } else {
106:                                    dir = file.substring(0, index + 1);
107:                                    fileDialog.setFile(file
108:                                            .substring(index + 1));
109:                                }
110:                                fileDialog.setDirectory(dir);
111:                                fileDialog.hide();
112:                            }
113:                        });
114:            } // handleSelected()
115:
116:            // NOTE: This method is called by privileged threads.
117:            //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
118:            public void handleCancel() {
119:                final FileDialog fileDialog = (FileDialog) target;
120:                MToolkit.executeOnEventHandlerThread(fileDialog,
121:                        new Runnable() {
122:                            public void run() {
123:                                fileDialog.setFile(null);
124:                                fileDialog.hide();
125:                            }
126:                        });
127:            } // handleCancel()
128:
129:            // NOTE: This method is called by privileged threads.
130:            //       DO NOT INVOKE CLIENT CODE ON THIS THREAD!
131:            public void handleQuit() {
132:                final FileDialog fileDialog = (FileDialog) target;
133:                MToolkit.executeOnEventHandlerThread(fileDialog,
134:                        new Runnable() {
135:                            public void run() {
136:                                fileDialog.hide();
137:                            }
138:                        });
139:            } // handleQuit()
140:
141:            public void setDirectory(String dir) {
142:                String file = ((FileDialog) target).getFile();
143:                setFileEntry((dir != null) ? dir : "./", (file != null) ? file
144:                        : "", null);
145:            }
146:
147:            public void setFile(String file) {
148:                String dir = ((FileDialog) target).getDirectory();
149:                if (dir == null) {
150:                    dir = "./";
151:                }
152:                setFileEntry((dir != null) ? dir : "./", getFilteredFile(null),
153:                        null);
154:            }
155:
156:            class DirectoryFilter implements  FilenameFilter {
157:                FilenameFilter userFilter;
158:
159:                DirectoryFilter(FilenameFilter userFilter) {
160:                    this .userFilter = userFilter;
161:                }
162:
163:                public boolean accept(File parent, String name) {
164:                    File toTest = new File(parent, name);
165:                    if (toTest.isDirectory()) {
166:                        return false;
167:                    } else if (userFilter != null) {
168:                        return userFilter.accept(parent, name);
169:                    } else {
170:                        return true;
171:                    }
172:                }
173:            }
174:
175:            public void doFilter(FilenameFilter filter, String dir) {
176:                String d = (dir == null) ? (((FileDialog) target)
177:                        .getDirectory()) : (dir);
178:                String f = getFilteredFile(null);
179:                File df = new File((d != null) ? d : ".");
180:                String[] files = df.list(new DirectoryFilter(filter));
181:                String[] nffiles = NativeFilteredFiles;
182:
183:                // At this point we have two file lists.
184:                // The first one is a filtered list of files that we retrieve
185:                // by using Java code and Java filter.
186:                // The second one is a filtered list of files that we retrieve
187:                // by using the native code and native pattern.
188:                // We should find an intersection of these two lists. The result
189:                // will be exactly what we expect to see in setFileEntry.
190:                // For more details please see 4784704.
191:                if (files != null) {
192:                    ArrayList filearr = new ArrayList();
193:                    if (nffiles != null) {
194:                        for (int j = 0; j < files.length; j++) {
195:                            for (int n = 0; n < nffiles.length; n++) {
196:                                if (files[j].equals(nffiles[n])) {
197:                                    filearr.add(files[j]);
198:                                    break;
199:                                }
200:                            }
201:                        }
202:                    }
203:                    files = new String[filearr.size()];
204:                    for (int i = 0; i < files.length; i++) {
205:                        files[i] = (String) filearr.get(i);
206:                    }
207:                }
208:                if (files == null || files.length == 0) {
209:                    files = new String[1];
210:                    files[0] = "";
211:                }
212:                setFileEntry((d != null) ? d : ".", (f != null) ? f : "", files);
213:            }
214:
215:            private boolean proceedFiltering(final String dir,
216:                    String[] nffiles, boolean isPrivileged) {
217:                // Transfer the native filtered file list to the doFilter method.
218:                NativeFilteredFiles = nffiles;
219:                // If we are not on the Toolkit thread we can call doFilter() directly.
220:                // If the filter is null no user code will be invoked
221:                if (!isPrivileged || filter == null) {
222:                    try {
223:                        doFilter(filter, dir);
224:                        return true;
225:                    } catch (Exception e) {
226:                        e.printStackTrace();
227:                        return false;
228:                    }
229:                }
230:                // Otherwise we have to call user code on EvenDispatchThread
231:                final ToolkitThreadBlockedHandler priveleged_lock = MToolkitThreadBlockedHandler
232:                        .getToolkitThreadBlockedHandler();
233:                final boolean[] finished = new boolean[1];
234:                final boolean[] result = new boolean[1];
235:                finished[0] = false;
236:                result[0] = false;
237:
238:                // Use the same Toolkit blocking mechanism as in DnD.
239:                priveleged_lock.lock();
240:
241:                MToolkit.executeOnEventHandlerThread((FileDialog) target,
242:                        new Runnable() {
243:                            public void run() {
244:                                priveleged_lock.lock();
245:                                try {
246:                                    doFilter(filter, dir);
247:                                    result[0] = true;
248:                                } catch (Exception e) {
249:                                    e.printStackTrace();
250:                                    result[0] = false;
251:                                } finally {
252:                                    finished[0] = true;
253:                                    priveleged_lock.exit();
254:                                    priveleged_lock.unlock();
255:                                }
256:                            }
257:                        });
258:
259:                while (!finished[0]) {
260:                    priveleged_lock.enter();
261:                }
262:
263:                priveleged_lock.unlock();
264:
265:                return result[0];
266:            }
267:
268:            public void setFilenameFilter(FilenameFilter filter) {
269:                this .filter = filter;
270:                FileDialog fdialog = (FileDialog) target;
271:                String dir = fdialog.getDirectory();
272:                String file = fdialog.getFile();
273:                setFile(file);
274:                doFilter(filter, null);
275:            }
276:
277:            // Called from native widget when paste key is pressed and we
278:            // already own the selection (prevents Motif from hanging while
279:            // waiting for the selection)
280:            //
281:            public void pasteFromClipboard() {
282:                Clipboard clipboard = target.getToolkit().getSystemClipboard();
283:
284:                Transferable content = clipboard.getContents(this );
285:                if (content != null) {
286:                    try {
287:                        String data = (String) (content
288:                                .getTransferData(DataFlavor.stringFlavor));
289:                        insertReplaceFileDialogText(data);
290:                    } catch (Exception e) {
291:                    }
292:                }
293:            }
294:
295:            // CAVEAT:
296:            // Peer coalescing code turned over the fact that the following functions
297:            // were being inherited from Dialog and were not implemented in awt_FileDialog.c
298:            // Five methods decribed by the peer interface are at fault (setResizable, setTitle,
299:            // toFront, toBack and handleFocusTraversalEvent).  Additionally show has to be overridden
300:            // as it was necessary to add a show function in MDialogPeer for modality flag passing.
301:            // As a result we were winding up in  awt_Dialog.c (now coalesced into awt_TopLevel).
302:            // As Filedialogs are modal and its unclear to me that any of these functions
303:            // can be called while the FD is on-screen let it go.  RJM.
304:            public void show() {
305:                // must have our own show or we wind up in pShow for Window. Bad. Very bad.
306:                setVisible(true);
307:                setFilenameFilter(filter);
308:            }
309:
310:            /**
311:             * MFileDialogPeer doesn't have native pData so we don't do restack on it
312:             * @see java.awt.peer.ContainerPeer#restack
313:             */
314:            public void restack() {
315:            }
316:
317:            /**
318:             * @see java.awt.peer.ContainerPeer#isRestackSupported
319:             */
320:            public boolean isRestackSupported() {
321:                return false;
322:            }
323:        }
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