Source Code Cross Referenced for RemoteBuffer.java in  » IDE » J » org » armedbear » j » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » IDE » J » org.armedbear.j 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * RemoteBuffer.java
003:         *
004:         * Copyright (C) 2000-2003 Peter Graves
005:         * $Id: RemoteBuffer.java,v 1.8 2003/12/01 00:01:26 piso Exp $
006:         *
007:         * This program is free software; you can redistribute it and/or
008:         * modify it under the terms of the GNU General Public License
009:         * as published by the Free Software Foundation; either version 2
010:         * of the License, or (at your option) any later version.
011:         *
012:         * This program is distributed in the hope that it will be useful,
013:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
014:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
015:         * GNU General Public License for more details.
016:         *
017:         * You should have received a copy of the GNU General Public License
018:         * along with this program; if not, write to the Free Software
019:         * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
020:         */
021:
022:        package org.armedbear.j;
023:
024:        import javax.swing.SwingUtilities;
025:
026:        public final class RemoteBuffer extends Buffer implements  Constants {
027:            private FtpSession session;
028:            private Buffer buffer;
029:            private final ProgressNotifier progressNotifier;
030:            private String ref;
031:            private boolean render;
032:            private HttpLoadProcess httpLoadProcess;
033:            private FtpLoadProcess ftpLoadProcess;
034:            private SshLoadProcess sshLoadProcess;
035:
036:            public RemoteBuffer(File file) {
037:                super ();
038:                initializeUndo();
039:                setFile(file);
040:                type = TYPE_NORMAL;
041:                autosaveEnabled = false;
042:                readOnly = true;
043:                progressNotifier = new StatusBarProgressNotifier(this );
044:                setProperty(Property.VERTICAL_RULE, 0);
045:                setProperty(Property.SHOW_LINE_NUMBERS, false);
046:            }
047:
048:            public RemoteBuffer(HttpFile file, String ref) {
049:                this (file);
050:                this .ref = ref;
051:                render = true;
052:            }
053:
054:            public RemoteBuffer(FtpFile file, FtpSession session) {
055:                this (file);
056:                this .session = session;
057:            }
058:
059:            private int initialLineNumber;
060:            private int initialOffset;
061:
062:            public void setInitialDotPos(int lineNumber, int offset) {
063:                // We just want to store the paraemters we're called with here, so we
064:                // can call setInitialDotPos() on the "real" buffer later.
065:                initialLineNumber = lineNumber;
066:                initialOffset = offset;
067:            }
068:
069:            public int load() {
070:                setLoaded(true);
071:                mode = Editor.getModeList().getMode(PLAIN_TEXT_MODE);
072:                formatter = mode.getFormatter(this );
073:
074:                final File file = getFile();
075:                if (file instanceof  FtpFile) {
076:                    if (session == null) {
077:                        Debug.bug("RemoteBuffer.load session is null");
078:                        session = FtpSession.getSession((FtpFile) file);
079:                        if (session == null)
080:                            return LOAD_FAILED; // Report error!
081:                    }
082:                    setBusy(true);
083:                    ftpLoadProcess = new FtpLoadProcess(this , (FtpFile) file,
084:                            session);
085:                    ftpLoadProcess.setProgressNotifier(progressNotifier);
086:                    ftpLoadProcess.setSuccessRunnable(ftpLoadSuccessRunnable);
087:                    ftpLoadProcess.setErrorRunnable(ftpLoadErrorRunnable);
088:                    ftpLoadProcess.start();
089:                    return LOAD_PENDING;
090:                } else if (file instanceof  HttpFile) {
091:                    setBusy(true);
092:                    httpLoadProcess = new HttpLoadProcess(this , (HttpFile) file);
093:                    httpLoadProcess.setProgressNotifier(progressNotifier);
094:                    httpLoadProcess.setSuccessRunnable(httpLoadSuccessRunnable);
095:                    httpLoadProcess.setErrorRunnable(httpLoadErrorRunnable);
096:                    httpLoadProcess.start();
097:                } else if (file instanceof  SshFile) {
098:                    setBusy(true);
099:                    sshLoadProcess = new SshLoadProcess(this , (SshFile) file);
100:                    sshLoadProcess.setSuccessRunnable(sshLoadSuccessRunnable);
101:                    sshLoadProcess.setErrorRunnable(sshLoadErrorRunnable);
102:                    sshLoadProcess.start();
103:                }
104:                return LOAD_COMPLETED;
105:            }
106:
107:            private Runnable ftpLoadSuccessRunnable = new Runnable() {
108:                public void run() {
109:                    File file = ftpLoadProcess.getFile();
110:                    String listing = ftpLoadProcess.getListing();
111:                    if (ftpLoadProcess.fileIsDirectory()) {
112:                        buffer = new Directory(file, listing);
113:                        buffer.load();
114:                    } else {
115:                        File cache = ftpLoadProcess.getCache();
116:                        if (cache == null)
117:                            return;
118:                        buffer = createBuffer(file, cache, listing);
119:                    }
120:                    // Success.
121:                    replaceBufferRunnable.run();
122:                }
123:            };
124:
125:            private ErrorRunnable ftpLoadErrorRunnable = new ErrorRunnable(
126:                    "Load failed") {
127:                public void run() {
128:                    kill();
129:                    super .run();
130:                }
131:            };
132:
133:            private Runnable httpLoadSuccessRunnable = new Runnable() {
134:                public void run() {
135:                    File cache = httpLoadProcess.getCache();
136:                    if (cache != null) {
137:                        // Success.
138:                        // We may have followed a redirect.
139:                        final File file = httpLoadProcess.getFile();
140:                        setFile(file);
141:                        if (render) {
142:                            buffer = WebBuffer
143:                                    .createWebBuffer(file, cache, ref);
144:                            buffer.load();
145:                        } else {
146:                            buffer = createBuffer(file, cache, getListing());
147:                            // Set the buffer's mode.
148:                            ModeList modeList = Editor.getModeList();
149:                            String contentType = httpLoadProcess
150:                                    .getContentType();
151:                            Mode mode;
152:                            if (contentType != null
153:                                    && contentType.toLowerCase().startsWith(
154:                                            "text/html"))
155:                                mode = modeList.getMode(HTML_MODE);
156:                            else {
157:                                mode = modeList.getModeForFileName(file
158:                                        .getName());
159:                                if (mode == null)
160:                                    mode = modeList.getMode(PLAIN_TEXT_MODE);
161:                            }
162:                            buffer.setMode(mode);
163:                            buffer.load();
164:                        }
165:                        replaceBufferRunnable.run();
166:                    }
167:                }
168:            };
169:
170:            private ErrorRunnable httpLoadErrorRunnable = new ErrorRunnable(
171:                    "Load failed") {
172:                public void run() {
173:                    Log.debug("httpLoadErrorRunnable.run");
174:                    Editor editor = Editor.currentEditor();
175:                    if (editor.getBuffer() == RemoteBuffer.this ) {
176:                        editor.status("");
177:                        editor.setDefaultCursor();
178:                    }
179:                    super .run();
180:                    kill();
181:                }
182:            };
183:
184:            private Runnable sshLoadSuccessRunnable = new Runnable() {
185:                public void run() {
186:                    File file = sshLoadProcess.getFile();
187:                    String listing = sshLoadProcess.getListing();
188:                    if (sshLoadProcess.fileIsDirectory()) {
189:                        buffer = new Directory(file, listing);
190:                        buffer.load();
191:                    } else {
192:                        File cache = sshLoadProcess.getCache();
193:                        buffer = createBuffer(file, cache, listing);
194:                    }
195:                    // Success.
196:                    replaceBufferRunnable.run();
197:                }
198:            };
199:
200:            private Runnable replaceBufferRunnable = new Runnable() {
201:                public void run() {
202:                    if (Editor.getBufferList().contains(RemoteBuffer.this )) {
203:                        int result;
204:                        try {
205:                            if (!buffer.initialized())
206:                                buffer.initialize();
207:                            result = buffer.load();
208:                        } catch (OutOfMemoryError e) {
209:                            buffer.kill();
210:                            RemoteBuffer.this .kill();
211:                            Runnable r = new Runnable() {
212:                                public void run() {
213:                                    MessageDialog
214:                                            .showMessageDialog(
215:                                                    Editor.currentEditor(),
216:                                                    "Insufficient memory to load buffer",
217:                                                    "Error");
218:                                }
219:                            };
220:                            SwingUtilities.invokeLater(r);
221:                            result = LOAD_FAILED;
222:                        }
223:                        if (result == LOAD_COMPLETED) {
224:                            buffer.setInitialDotPos(initialLineNumber,
225:                                    initialOffset);
226:                            Editor.getBufferList().replace(RemoteBuffer.this ,
227:                                    buffer);
228:                        }
229:                    } else
230:                        buffer.kill();
231:                }
232:            };
233:
234:            private ErrorRunnable sshLoadErrorRunnable = new ErrorRunnable(
235:                    "Load failed") {
236:                public void run() {
237:                    if (Editor.getBufferList().contains(RemoteBuffer.this )) {
238:                        if (isEmpty())
239:                            kill();
240:                        else
241:                            setBusy(false);
242:                    }
243:                    if (sshLoadProcess.cancelled()) {
244:                        for (EditorIterator it = new EditorIterator(); it
245:                                .hasNext();)
246:                            it.nextEditor().updateDisplay();
247:                        Editor.currentEditor().status("Cancelled");
248:                    } else
249:                        super .run();
250:                }
251:            };
252:
253:            public void dispose() {
254:                if (progressNotifier != null)
255:                    progressNotifier.cancel();
256:                super .dispose();
257:            }
258:
259:            public String getTitle() {
260:                return getFile().getHostName();
261:            }
262:
263:            // For the buffer list.
264:            public String toString() {
265:                return getFile().getHostName();
266:            }
267:
268:            public File getCurrentDirectory() {
269:                return Directories.getUserHomeDirectory();
270:            }
271:        }
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