2 * (C) Copyright 2009 Nicholas A. Zigarovich
4 * Use, modification, and distribution are subject to the terms specified in the
12 * - A session-load-window-replace command which is like
13 * window-current-replace, but which also recycles existing windows.
14 * - A session-load-window-current-flatten command which loads all buffers in a
15 * multi-window section in the current window.
16 * - Session files should be more human readable.
17 * - Ability to store arbitrary session data, for example, a buffer's history.
18 * - The previous two features depend on a parser/generator for retroj's
19 * structured plaintext format.
23 * - This module does not work correctly with daemon mode.
27 * - Inhibit loading of the homepage in windows' initial buffers when auto-
29 * - Auto-save the session when the last conkeror window is closed by a
30 * window manager event. Currently no session is saved.
31 * - Consider how and which errors should be handled. Too often we silently
32 * fail and return without telling the user why we are doing so.
38 //// Manual sessions. ////
41 let _session_dir_default = Cc["@mozilla.org/file/directory_service;1"]
42 .getService(Ci.nsIProperties).get("ProfD", Ci.nsIFile);
43 _session_dir_default.append("sessions");
44 if (! _session_dir_default.exists())
45 _session_dir_default.create(Ci.nsIFile.DIRECTORY_TYPE, 0755);
47 define_variable("session_dir", _session_dir_default,
48 "Default directory for save/load interactive commands.");
50 let _json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON);
53 * session_get generates and returns a structure containing session
54 * data for the current group of open windows.
56 function session_get () {
59 for_each_window(function (w) {
61 w.buffers.for_each(function (b) {
62 if (b instanceof content_buffer)
63 buffers.push(b.display_uri_string);
65 if (buffers.length == 0)
74 * session_load loads the given session (given as a data structure),
75 * with optional window as the first window to load the session into,
76 * with optional buffer_idx as the buffer index at which to begin
77 * overwriting existing buffers.
79 function session_load (session, window, buffer_idx) {
80 if (! (session[0] && session[0][0]))
81 throw new Error("Invalid 'session' argument.");
84 let bi = buffer_idx != undefined ?
85 buffer_idx : window.buffers.count;
87 // first kill special buffers slated for recycling.
88 let (b, i = (bi == 0 ? 1 : bi),
91 while ((b = window.buffers.get_buffer(i))) {
92 if (b instanceof content_buffer) {
99 (b = window.buffers.get_buffer(0)) &&
100 !(b instanceof content_buffer))
103 create_buffer(window,
104 buffer_creator(content_buffer),
105 OPEN_NEW_BUFFER_BACKGROUND);
106 kill_buffer(b, true);
110 // it is now safe to recycle the remaining buffers.
111 for (let i = 0; session[s][i] != undefined; ++i, ++bi) {
112 let b = window.buffers.get_buffer(bi);
115 let history = b.web_navigation.sessionHistory;
116 history.PurgeHistory(history.count);
118 b.load(session[s][i]);
120 let c = buffer_creator(content_buffer, $load = session[s][i]);
121 create_buffer(window, c, OPEN_NEW_BUFFER_BACKGROUND);
124 for (let b = window.buffers.get_buffer(bi); b;
125 b = window.buffers.get_buffer(bi))
127 kill_buffer(b, true);
132 function make_init_hook (session) {
133 function init_hook (window) {
134 for (let i = 1; session[i] != undefined; ++i) {
135 let c = buffer_creator(content_buffer, $load = session[i]);
136 create_buffer(window, c, OPEN_NEW_BUFFER_BACKGROUND);
142 for (; session[s] != undefined; ++s) {
143 let w = make_window(buffer_creator(content_buffer,
144 $load = session[s][0]));
145 add_hook.call(w, "window_initialize_late_hook",
146 make_init_hook(session[s]));
151 * session_load_window_new loads the given session into new windows.
153 function session_load_window_new (session) {
154 session_load(session);
158 * session_load_window_current loads the given session, with the
159 * session's first window being appended to window. No existing
160 * buffers will be overwritten.
162 function session_load_window_current (session, window) {
163 let w = window ? window : get_recent_conkeror_window();
164 session_load(session, w);
168 * session_load_window_current loads the given session, with the
169 * session's first window replacing the given window. All buffers in
170 * the given window will be overwritten.
172 function session_load_window_current_replace (session, window) {
173 let w = window ? window : get_recent_conkeror_window();
174 session_load(session, w, 0);
178 * session_write writes the given session to the file given by path.
180 function session_write (path, session) {
181 if (! (path instanceof Ci.nsIFile))
182 path = make_file(path);
184 session = session_get();
185 write_text_file(path, _json.encode(session));
189 * session_read reads session data from the given file path,
190 * and returns a decoded session structure.
192 function session_read (path) {
193 if (! (path instanceof Ci.nsIFile))
194 path = make_file(path);
195 return _json.decode(read_text_file(path));
199 * session_remove deletes the given session file.
201 function session_remove (path) {
202 if (! (path instanceof Ci.nsIFile))
203 path = make_file(path);
207 let _session_prompt_file = function (I) {
209 yield I.minibuffer.read_file_path(
210 $prompt = "Session file:",
211 $initial_value = session_dir.path,
217 let _session_file_not_found = function (I, file) {
218 let mb = I ? I.minibuffer : get_recent_conkeror_window().minibuffer;
219 let msg = "Session file not found: " + file.path;
224 interactive("session-save",
225 "Save the current session.",
227 session_write(make_file(yield _session_prompt_file(I)),
231 interactive("session-load-window-new",
232 "Load a session in a new window.",
234 let file = make_file(yield _session_prompt_file(I));
236 _session_file_not_found(I, file);
238 session_load_window_new(session_read(file));
241 interactive("session-load-window-current",
242 "Load a session in new buffers in the current window.",
244 let file = make_file(yield _session_prompt_file(I));
246 _session_file_not_found(I, file);
248 session_load_window_current(session_read(file), I.window);
251 interactive("session-load-window-current-replace",
252 "Replace all buffers in the current window with buffers "+
253 "in the saved session.",
255 let file = make_file(yield _session_prompt_file(I));
257 _session_file_not_found(I, file);
259 session_load_window_current_replace(session_read(file),
263 interactive("session-remove",
264 "Remove a session file.",
266 let file = make_file(yield _session_prompt_file(I));
268 _session_file_not_found(I, file);
270 session_remove(file);
274 //// Auto-save sessions. ////
277 define_variable("session_auto_save_file", "auto-save",
278 "Default filename for the auto-save session.");
280 define_variable("session_auto_save_auto_load", false,
281 'Whether to load the auto-saved session when the browser is started. '+
282 'May be true, false, or "prompt".');
284 function session_auto_save_load_window_new () {
285 session_load_window_new(_session_auto_save_cached);
288 function session_auto_save_load_window_current (window) {
289 session_load_window_current(_session_auto_save_cached, window);
292 function session_auto_save_load_window_current_replace (window) {
293 session_load_window_current_replace(_session_auto_save_cached, window);
296 define_variable("session_auto_save_auto_load_fn",
298 "Function to be called to load the auto-saved session at start-up " +
299 "when URLs are given on the command-line. May be " +
300 "session_auto_save_load_window_new, " +
301 "session_auto_save_load_window_current, or null. If null, the" +
302 "session will not be auto-loaded when URLs are given.");
305 // undefined - we have not tried to cache the auto-save.
306 // null - we have tried to cache the auto-save, but it didn't exist.
307 // object - the cached session object for the auto-save.
308 let _session_auto_save_cached = undefined;
310 let _session_auto_save_file_get = function () {
311 if (session_auto_save_file instanceof Ci.nsIFile)
312 return session_auto_save_file;
313 let f = session_dir.clone();
314 f.append(session_auto_save_file);
318 function session_auto_save_save () {
319 let f = _session_auto_save_file_get();
320 let s = session_get();
327 function session_auto_save_remove () {
328 let f = _session_auto_save_file_get();
333 let _session_auto_save_auto_load = function (user_gave_urls) {
334 if (! session_auto_save_auto_load)
336 if (! _session_auto_save_cached) {
337 _session_file_not_found(null, _session_auto_save_file_get());
341 let window = get_recent_conkeror_window();
342 if (session_auto_save_auto_load == true)
344 else if (session_auto_save_auto_load == "prompt" && !user_gave_urls) {
345 do_load = (yield window.minibuffer.read_single_character_option(
346 $prompt = "Load auto-saved session? (y/n)",
347 $options = ["y", "n"]
350 throw new Error("Invalid value for session_auto_save_auto_load: " +
351 session_auto_save_auto_load);
354 if (user_gave_urls) {
355 if (session_auto_save_auto_load_fn)
356 session_auto_save_auto_load_fn(window);
358 session_auto_save_load_window_current_replace(window);
361 interactive("session-auto-save-load-window-new",
362 "Load the auto-save session in a new window.",
364 if (_session_auto_save_cached == null)
365 _session_file_not_found(I, _session_auto_save_file_get());
367 session_auto_save_load_window_new();
370 interactive("session-auto-save-load-window-current",
371 "Load the auto-save session in new buffers in the current window.",
373 if (_session_auto_save_cached == null)
374 _session_file_not_found(I, _session_auto_save_file_get());
376 session_auto_save_load_window_current(I.window);
379 interactive("session-auto-save-load-window-current-replace",
380 "Replace all buffers in the current window with buffers in the "+
381 "auto-saved session.",
383 if (_session_auto_save_cached == null)
384 _session_file_not_found(I, _session_auto_save_file_get());
386 session_auto_save_load_window_current_replace(I.window);
389 interactive("session-auto-save-remove",
390 "Remove the auto-save session",
391 session_auto_save_remove);
394 //// auto-save-session-mode ////
397 let _session_auto_save_mode_bootstrap = function (b) {
398 remove_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
399 add_hook("create_buffer_hook", session_auto_save_save);
400 add_hook("kill_buffer_hook", session_auto_save_save);
401 add_hook("content_buffer_location_change_hook", session_auto_save_save);
402 let user_gave_urls = false;
403 for (let i = 0; i < command_line.length; ++i) {
404 if (command_line[i][0] != '-') {
405 user_gave_urls = true;
409 co_call(_session_auto_save_auto_load(user_gave_urls));
412 let _session_auto_save_mode_enable = function () {
413 if (_session_auto_save_cached == undefined) {
414 let f = _session_auto_save_file_get();
415 _session_auto_save_cached = f.exists() ? session_read(f) : null;
417 if (conkeror_started) {
418 add_hook("create_buffer_hook", session_auto_save_save);
419 add_hook("kill_buffer_hook", session_auto_save_save);
420 add_hook("content_buffer_location_change_hook", session_auto_save_save);
422 add_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
425 let _session_auto_save_mode_disable = function () {
426 remove_hook("create_buffer_hook", session_auto_save_save);
427 remove_hook("kill_buffer_hook", session_auto_save_save);
428 remove_hook("content_buffer_location_change_hook", session_auto_save_save);
430 remove_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
433 define_global_mode("session_auto_save_mode",
434 _session_auto_save_mode_enable,
435 _session_auto_save_mode_disable);
437 session_auto_save_mode(true);