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.
36 //// Manual sessions. ////
39 let _session_dir_default = Cc["@mozilla.org/file/directory_service;1"]
40 .getService(Ci.nsIProperties).get("ProfD", Ci.nsIFile);
41 _session_dir_default.append("sessions");
42 if (! _session_dir_default.exists())
43 _session_dir_default.create(Ci.nsIFile.DIRECTORY_TYPE, 0755);
45 define_variable("session_dir", _session_dir_default,
46 "Default directory for save/load interactive commands.");
48 let _json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON);
51 * session_get generates and returns a structure containing session
52 * data for the current group of open windows.
54 function session_get () {
57 for_each_window(function (w) {
60 w.buffers.for_each(function (b) {
61 if (! b.browser || ! (b instanceof content_buffer))
63 buffers[y] = b.browser.contentDocument.location.href;
75 * session_load loads the given session (given as a data structure),
76 * with optional window as the first window to load the session into,
77 * with optional buffer_idx as the buffer index at which to begin
78 * overwriting existing buffers.
80 function session_load (session, window, buffer_idx) {
81 if (! (session[0] && session[0][0]))
82 throw new Error("Invalid 'session' argument.");
85 let bi = buffer_idx != undefined ?
86 buffer_idx : window.buffers.count;
87 for (let i = 0; session[s][i] != undefined; ++i, ++bi) {
88 let b = window.buffers.get_buffer(bi);
89 if (! (b instanceof content_buffer))
92 b.load(session[s][i]);
94 let c = buffer_creator(content_buffer, $load = session[s][i]);
95 create_buffer(window, c, OPEN_NEW_BUFFER_BACKGROUND);
98 for (let b = window.buffers.get_buffer(bi); b;
99 b = window.buffers.get_buffer(bi))
101 if (b instanceof content_buffer)
102 kill_buffer(b, true);
109 function make_init_hook (session) {
110 function init_hook (window) {
111 for (let i = 1; session[i] != undefined; ++i) {
112 let c = buffer_creator(content_buffer, $load = session[i]);
113 create_buffer(window, c, OPEN_NEW_BUFFER_BACKGROUND);
119 for (; session[s] != undefined; ++s) {
120 let w = make_window(buffer_creator(content_buffer,
121 $load = session[s][0]));
122 add_hook.call(w, "window_initialize_late_hook",
123 make_init_hook(session[s]));
128 * session_load_window_new loads the given session into new windows.
130 function session_load_window_new (session) {
131 session_load(session);
135 * session_load_window_current loads the given session, with the
136 * session's first window being appended to window. No existing
137 * buffers will be overwritten.
139 function session_load_window_current (session, window) {
140 let w = window ? window : get_recent_conkeror_window();
141 session_load(session, w);
145 * session_load_window_current loads the given session, with the
146 * session's first window replacing the given window. All buffers in
147 * the given window will be overwritten.
149 function session_load_window_current_replace (session, window) {
150 let w = window ? window : get_recent_conkeror_window();
151 session_load(session, w, 0);
155 * session_write writes the given session to the file given by path.
157 function session_write (path, session) {
158 if (! (path instanceof Ci.nsIFile))
159 path = make_file(path);
161 session = session_get();
162 write_text_file(path, _json.encode(session));
166 * session_read reads session data from the given file path,
167 * and returns a decoded session structure.
169 function session_read (path) {
170 if (! (path instanceof Ci.nsIFile))
171 path = make_file(path);
172 return _json.decode(read_text_file(path));
176 * session_remove deletes the given session file.
178 function session_remove (path) {
179 if (! (path instanceof Ci.nsIFile))
180 path = make_file(path);
184 let _session_prompt_file = function (I) {
186 yield I.minibuffer.read_file_path(
187 $prompt = "Session file:",
188 $initial_value = session_dir.path,
194 let _session_file_not_found = function (I, file) {
195 let mb = I ? I.minibuffer : get_recent_conkeror_window().minibuffer;
196 let msg = "Session file not found: " + file.path;
201 interactive("session-save",
202 "Save the current session.",
204 session_write(make_file(yield _session_prompt_file(I)),
208 interactive("session-load-window-new",
209 "Load a session in a new window.",
211 let file = make_file(yield _session_prompt_file(I));
213 _session_file_not_found(I, file);
215 session_load_window_new(session_read(file));
218 interactive("session-load-window-current",
219 "Load a session in new buffers in the current window.",
221 let file = make_file(yield _session_prompt_file(I));
223 _session_file_not_found(I, file);
225 session_load_window_current(session_read(file), I.window);
228 interactive("session-load-window-current-replace",
229 "Replace all buffers in the current window with buffers "+
230 "in the saved session.",
232 let file = make_file(yield _session_prompt_file(I));
234 _session_file_not_found(I, file);
236 session_load_window_current_replace(session_read(file),
240 interactive("session-remove",
241 "Remove a session file.",
243 let file = make_file(yield _session_prompt_file(I));
245 _session_file_not_found(I, file);
247 session_remove(file);
251 //// Auto-save sessions. ////
254 define_variable("session_auto_save_file", "auto-save",
255 "Default filename for the auto-save session.");
257 define_variable("session_auto_save_auto_load", false,
258 'Whether to load the auto-saved session when the browser is started. '+
259 'May be true, false, or "prompt".');
261 function session_auto_save_load_window_new () {
262 session_load_window_new(_session_auto_save_cached);
265 function session_auto_save_load_window_current (window) {
266 session_load_window_current(_session_auto_save_cached, window);
269 function session_auto_save_load_window_current_replace (window) {
270 session_load_window_current_replace(_session_auto_save_cached, window);
273 define_variable("session_auto_save_auto_load_fn",
275 "Function to be called to load the auto-saved session at start-up " +
276 "when URLs are given on the command-line. May be " +
277 "session_auto_save_load_window_new, " +
278 "session_auto_save_load_window_current, or null. If null, the" +
279 "session will not be auto-loaded when URLs are given.");
282 // undefined - we have not tried to cache the auto-save.
283 // null - we have tried to cache the auto-save, but it didn't exist.
284 // object - the cached session object for the auto-save.
285 let _session_auto_save_cached = undefined;
287 let _session_auto_save_file_get = function () {
288 if (session_auto_save_file instanceof Ci.nsIFile)
289 return session_auto_save_file;
290 let f = session_dir.clone();
291 f.append(session_auto_save_file);
295 function session_auto_save_save () {
296 let f = _session_auto_save_file_get();
297 let s = session_get();
304 function session_auto_save_remove () {
305 let f = _session_auto_save_file_get();
310 let _session_auto_save_auto_load = function (user_gave_urls) {
311 if (! session_auto_save_auto_load)
313 if (! _session_auto_save_cached) {
314 _session_file_not_found(null, _session_auto_save_file_get());
318 let window = get_recent_conkeror_window();
319 if (session_auto_save_auto_load == true)
321 else if (session_auto_save_auto_load == "prompt" && !user_gave_urls) {
322 do_load = (yield window.minibuffer.read_single_character_option(
323 $prompt = "Load auto-saved session? (y/n)",
324 $options = ["y", "n"]
327 throw new Error("Invalid value for session_auto_save_auto_load: " +
328 session_auto_save_auto_load);
331 if (user_gave_urls) {
332 if (session_auto_save_auto_load_fn)
333 session_auto_save_auto_load_fn(window);
335 session_auto_save_load_window_current_replace(window);
338 interactive("session-auto-save-load-window-new",
339 "Load the auto-save session in a new window.",
341 if (_session_auto_save_cached == null)
342 _session_file_not_found(I, _session_auto_save_file_get());
344 session_auto_save_load_window_new();
347 interactive("session-auto-save-load-window-current",
348 "Load the auto-save session in new buffers in the current window.",
350 if (_session_auto_save_cached == null)
351 _session_file_not_found(I, _session_auto_save_file_get());
353 session_auto_save_load_window_current(I.window);
356 interactive("session-auto-save-load-window-current-replace",
357 "Replace all buffers in the current window with buffers in the "+
358 "auto-saved session.",
360 if (_session_auto_save_cached == null)
361 _session_file_not_found(I, _session_auto_save_file_get());
363 session_auto_save_load_window_current_replace(I.window);
366 interactive("session-auto-save-remove",
367 "Remove the auto-save session",
368 session_auto_save_remove);
371 //// auto-save-session-mode ////
374 let _session_auto_save_mode_bootstrap = function (b) {
375 remove_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
376 add_hook("create_buffer_hook", session_auto_save_save);
377 add_hook("kill_buffer_hook", session_auto_save_save);
378 add_hook("content_buffer_location_change_hook", session_auto_save_save);
379 let user_gave_urls = false;
380 for (let i = 0; i < command_line.length; ++i) {
381 if (command_line[i][0] != '-') {
382 user_gave_urls = true;
386 co_call(_session_auto_save_auto_load(user_gave_urls));
389 let _session_auto_save_mode_enable = function () {
390 if (_session_auto_save_cached == undefined) {
391 let f = _session_auto_save_file_get();
392 _session_auto_save_cached = f.exists() ? session_read(f) : null;
394 if (conkeror_started) {
395 add_hook("create_buffer_hook", session_auto_save_save);
396 add_hook("kill_buffer_hook", session_auto_save_save);
397 add_hook("content_buffer_location_change_hook", session_auto_save_save);
399 add_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
402 let _session_auto_save_mode_disable = function () {
403 remove_hook("create_buffer_hook", session_auto_save_save);
404 remove_hook("kill_buffer_hook", session_auto_save_save);
405 remove_hook("content_buffer_location_change_hook", session_auto_save_save);
407 remove_hook("window_initialize_late_hook", _session_auto_save_mode_bootstrap);
410 define_global_mode("session_auto_save_mode",
411 _session_auto_save_mode_enable,
412 _session_auto_save_mode_disable);
414 session_auto_save_mode(true);