modules/commands.js

   1 /**
   2  * (C) Copyright 2004-2007 Shawn Betts
   3  * (C) Copyright 2007-2010 John J. Foerch
   4  * (C) Copyright 2007-2008 Jeremy Maitin-Shepard
   5  *
   6  * Use, modification, and distribution are subject to the terms specified in the
   7  * COPYING file.
   8 **/
   9
  10 define_coroutine_hook("before_quit_hook", RUN_HOOK_UNTIL_FAILURE);
  11 define_hook("quit_hook");
  12
  13 function quit () {
  14     var res = yield before_quit_hook.run();
  15     if (res) {
  16         quit_hook.run();
  17         var appStartup = Cc["@mozilla.org/toolkit/app-startup;1"]
  18             .getService(Ci.nsIAppStartup);
  19         appStartup.quit(appStartup.eAttemptQuit);
  20     }
  21 }
  22 interactive("quit", "Quit Conkeror", quit);
  23
  24
  25 function show_conkeror_version (window) {
  26     var xulrunner_version = Cc['@mozilla.org/xre/app-info;1']
  27         .getService(Ci.nsIXULAppInfo)
  28         .platformVersion;
  29     window.minibuffer.message("Conkeror "+conkeror.version+
  30                               " (XULRunner "+xulrunner_version+
  31                               ", "+get_os()+")");
  32 }
  33 interactive("conkeror-version",
  34     "Show version information for Conkeror.",
  35     function (I) { show_conkeror_version(I.window); });
  36 interactive("version",
  37     "Show version information for Conkeror.",
  38     "conkeror-version");
  39
  40 /* FIXME: maybe this should be supported for non-browser buffers */
  41 function scroll_horiz_complete (buffer, n) {
  42     var w = buffer.focused_frame;
  43     w.scrollTo (n > 0 ? w.scrollMaxX : 0, w.scrollY);
  44 }
  45 interactive("scroll-beginning-of-line",
  46     "Scroll the current frame all the way to the left.",
  47     function (I) { scroll_horiz_complete(I.buffer, -1); });
  48
  49 interactive("scroll-end-of-line",
  50     "Scroll the current frame all the way to the right.",
  51     function (I) { scroll_horiz_complete(I.buffer, 1); });
  52
  53 interactive("scroll-top-left",
  54     "Scroll the current frame all the way to the top left",
  55     function (I) {
  56         scroll_horiz_complete(I.buffer, -1);
  57         I.buffer.do_command("cmd_scrollTop");
  58     });
  59
  60
  61 function delete_window (window) {
  62     window.window.close();
  63 }
  64 interactive("delete-window",
  65     "Delete the current window.",
  66     function (I) { delete_window(I.window); });
  67
  68 interactive("jsconsole",
  69     "Open the JavaScript console.",
  70     "find-url-new-buffer",
  71     $browser_object = "chrome://global/content/console.xul");
  72
  73
  74 function paste_x_primary_selection (field) {
  75     modify_region(field, function (str) read_from_x_primary_selection());
  76 }
  77 interactive("paste-x-primary-selection",
  78     "Insert the contents of the X primary selection into the selected field or "+
  79     "minibuffer. Deactivates the region if it is active, and leaves the point "+
  80     "after the inserted text.",
  81     function (I) call_on_focused_field(I, paste_x_primary_selection, true));
  82
  83
  84 function open_line (field) {
  85     modify_region(field, function() ["\n", 0]);
  86 }
  87 interactive("open-line",
  88     "If there is an active region, replace is with a newline, otherwise just "+
  89     "insert a newline. In both cases leave point before the inserted newline.",
  90     function (I) call_on_focused_field(I, open_line, true));
  91
  92
  93 interactive("insert-parentheses",
  94     "Insert a pair of parentheses, or surround the currently selected text "+
  95     "with a pair of parentheses.",
  96     function (I) {
  97         call_on_focused_field(I, function (field) {
  98             modify_region(field,
  99                           function (str) {
 100                               return ["("+str+")", (str ? str.length+2 : 1)];
 101                           });
 102         }, true);
 103     });
 104
 105
 106 function transpose_chars (field) {
 107     var value = field.value;
 108     var caret = field.selectionStart; // Caret position.
 109     var length = value.length;
 110
 111     // If we have less than two character in the field or if we are at the
 112     // beginning of the field, do nothing.
 113     if (length < 2 || caret == 0)
 114         return;
 115
 116     // If we are at the end of the field, switch places on the two last
 117     // characters. TODO: This should happen at the end of every line, not only
 118     // at the end of the field.
 119     if (caret == length)
 120         caret--;
 121
 122     // Do the transposing.
 123     field.value = switch_subarrays(value, caret - 1, caret, caret, caret + 1);
 124
 125     // Increment the caret position. If this is not done, the caret is left at
 126     // the end of the field as a result of the replacing of contents.
 127     field.selectionStart = caret + 1;
 128     field.selectionEnd = caret + 1;
 129 }
 130 interactive("transpose-chars",
 131     "Interchange characters around point, moving forward one character.",
 132     function (I) call_on_focused_field(I, transpose_chars, true));
 133
 134
 135 interactive("execute-extended-command",
 136     "Call a command specified in the minibuffer.",
 137     function (I) {
 138         var prefix = I.P;
 139         var boc = I.browser_object;
 140         var prompt = "M-x";
 141         if (I.key_sequence)
 142             prompt = I.key_sequence.join(" ");
 143         if (boc)
 144             prompt += ' ['+boc.name+']';
 145         if (prefix !== null && prefix !== undefined) {
 146             if (typeof prefix == "object")
 147                 prompt += prefix[0] == 4 ? " C-u" : " "+prefix[0];
 148             else
 149                 prompt += " "+prefix;
 150         }
 151         var command = yield I.minibuffer.read_command($prompt = prompt);
 152         call_after_timeout(function () {
 153             input_handle_command.call(I.window, new command_event(command));
 154         }, 0);
 155     },
 156     $prefix = true);
 157
 158
 159 /// built in commands
 160 // see: http://www.xulplanet.com/tutorials/xultu/commandupdate.html
 161
 162 // Performs a command on a browser buffer content area
 163
 164
 165 define_builtin_commands("",
 166     function (I, command) {
 167         call_builtin_command(I.window, command);
 168     },
 169     false);
 170
 171 define_builtin_commands("caret-",
 172     function (I, command) {
 173         var buffer = I.buffer;
 174         try {
 175             buffer.do_command(command);
 176         } catch (e) {
 177             /* Ignore exceptions */
 178         }
 179     },
 180     'caret');
 181
 182 function get_link_text () {
 183     var e = document.commandDispatcher.focusedElement;
 184     if (e && e.getAttribute("href")) {
 185         return e.getAttribute("href");
 186     }
 187     return null;
 188 }
 189
 190
 191 /*
 192 function copy_email_address (loc)
 193 {
 194     // Copy the comma-separated list of email addresses only.
 195     // There are other ways of embedding email addresses in a mailto:
 196     // link, but such complex parsing is beyond us.
 197     var qmark = loc.indexOf( "?" );
 198     var addresses;
 199
 200     if ( qmark > 7 ) {                   // 7 == length of "mailto:"
 201         addresses = loc.substring( 7, qmark );
 202     } else {
 203         addresses = loc.substr( 7 );
 204     }
 205
 206     //XXX: the original code, which we got from firefox, unescapes the string
 207     //     using the current character set.  To do this in conkeror, we
 208     //     *should* use an interactive method that gives us the character set,
 209     //     rather than fetching it by side-effect.
 210
 211     //     // Let's try to unescape it using a character set
 212     //     // in case the address is not ASCII.
 213     //     try {
 214     //         var characterSet = this.target.ownerDocument.characterSet;
 215     //         const textToSubURI = Components.classes["@mozilla.org/intl/texttosuburi;1"]
 216     //             .getService(Components.interfaces.nsITextToSubURI);
 217     //         addresses = textToSubURI.unEscapeURIForUI(characterSet, addresses);
 218     //     }
 219     //     catch(ex) {
 220     //         // Do nothing.
 221     //     }
 222
 223     writeToClipboard(addresses);
 224     message("Copied '" + addresses + "'");
 225 }
 226 interactive("copy-email-address", copy_email_address, ['focused_link_url']);
 227 */
 228
 229 /* FIXME: fix this command */
 230 /*
 231 interactive("source",
 232             "Load a JavaScript file.",
 233             function (fo) { load_rc (fo.path); }, [['f', function (a) { return "Source File: "; }, null, "source"]]);
 234 */
 235 function reinit (window) {
 236     try {
 237         var obs = Cc["@mozilla.org/observer-service;1"]
 238             .getService(Ci.nsIObserverService);
 239         obs.notifyObservers(null, "startupcache-invalidate", null);
 240         var path = load_rc();
 241         window.minibuffer.message("Loaded: " + path);
 242     } catch (e) {
 243         window.minibuffer.message("Failed to load: "+path);
 244     }
 245 }
 246
 247 interactive("reinit",
 248     "Reload the Conkeror rc file.",
 249     function (I) { reinit(I.window); });
 250
 251 interactive("help-page",
 252     "Open the Conkeror help page.",
 253     "find-url-new-buffer",
 254     $browser_object = "chrome://conkeror-help/content/help.html");
 255
 256 interactive("tutorial",
 257     "Open the Conkeror tutorial.",
 258     "find-url-new-buffer",
 259     $browser_object = "chrome://conkeror-help/content/tutorial.html");
 260
 261 function univ_arg_to_number (prefix, default_value) {
 262     if (prefix == null) {
 263         if (default_value == null)
 264             return 1;
 265         else
 266             return default_value;
 267     }
 268     if (typeof prefix == "object")
 269         return prefix[0];
 270     return prefix;
 271 }
 272
 273
 274 interactive("eval-expression",
 275     "Evaluate JavaScript statements.",
 276     function (I) {
 277         var s = yield I.minibuffer.read(
 278             $prompt = "Eval:",
 279             $history = "eval-expression",
 280             $completer = new javascript_completer(conkeror));
 281         var result = evaluate(s);
 282         if (result !== undefined)
 283             I.window.minibuffer.message(String(result));
 284     });
 285
 286
 287 function show_extension_manager () {
 288     return conkeror.window_watcher.openWindow(
 289         null,
 290         "chrome://mozapps/content/extensions/extensions.xul?type=extensions",
 291         "ExtensionsWindow",
 292         "resizable=yes,dialog=no",
 293         null);
 294 }
 295 interactive("extensions",
 296     "Open the extensions manager in a new window.",
 297     show_extension_manager);
 298
 299 function print_buffer (buffer) {
 300     buffer.top_frame.print();
 301 }
 302
 303 interactive("print-buffer",
 304     "Print the currently loaded page.",
 305     function (I) { print_buffer(I.buffer); });
 306
 307 function view_partial_source (window, charset, selection) {
 308     if (charset)
 309         charset = "charset=" + charset;
 310     window.window.openDialog("chrome://global/content/viewPartialSource.xul",
 311                              "_blank", "scrollbars,resizable,chrome,dialog=no",
 312                              null, charset, selection, 'selection');
 313 }
 314 //interactive ('view-partial-source', view_partial_source, I.current_window, I.content_charset, I.content_selection);
 315
 316
 317 function view_mathml_source (window, charset, target) {
 318     if (charset)
 319         charset = "charset=" + charset;
 320     window.window.openDialog("chrome://global/content/viewPartialSource.xul",
 321                              "_blank", "scrollbars,resizable,chrome,dialog=no",
 322                              null, charset, target, 'mathml');
 323 }
 324
 325
 326 function send_key_as_event (window, element, combo) {
 327     var split = unformat_key_combo(combo);
 328     var event = window.document.createEvent("KeyboardEvent");
 329     event.initKeyEvent(
 330         "keypress",
 331         true,
 332         true,
 333         null,
 334         split.ctrlKey,
 335         split.altKey,
 336         split.shiftKey,
 337         split.metaKey,
 338         split.keyCode,
 339         split.charCode);
 340     if (element)
 341         return element.dispatchEvent(event);
 342     else
 343         return window.dispatchEvent(event);
 344 }
 345
 346
 347 function ensure_content_focused (buffer) {
 348     var foc = buffer.focused_frame_or_null;
 349     if (!foc)
 350         buffer.top_frame.focus();
 351 }
 352 interactive("ensure-content-focused", "Ensure that the content document has focus.",
 353     function (I) { ensure_content_focused(I.buffer); });
 354
 355
 356 function network_set_online_status (status) {
 357     const io_service = Cc["@mozilla.org/network/io-service;1"]
 358         .getService(Ci.nsIIOService2);
 359     status = !status;
 360     io_service.manageOfflineStatus = false;
 361     io_service.offline = status;
 362 }
 363 interactive("network-go-online", "Work online.",
 364     function (I) { network_set_online_status(true); });
 365
 366 interactive("network-go-offline", "Work offline.",
 367     function (I) { network_set_online_status(false); });
 368
 369
 370 interactive("submit-form",
 371     "Submit the form to which the focused element belongs.",
 372     function (I) {
 373         var el = I.buffer.focused_element.parentNode;
 374         while (el && el.tagName != "FORM")
 375             el = el.parentNode;
 376         if (el) {
 377             var inputs = el.getElementsByTagName("input");
 378             for (var i = 0, ilen = inputs.length; i < ilen; i++) {
 379                 if (inputs[i].getAttribute("type") == "submit")
 380                     return browser_object_follow(I.buffer, FOLLOW_DEFAULT,
 381                                                  inputs[i]);
 382             }
 383             el.submit();
 384         }
 385     });
 386
 387
 388 /*
 389  * Browser Object Commands
 390  */
 391 interactive("follow", null,
 392     alternates(follow, follow_new_buffer, follow_new_window),
 393     $browser_object = browser_object_links);
 394
 395 interactive("follow-top", null,
 396     alternates(follow_current_buffer, follow_current_frame),
 397     $browser_object = browser_object_frames,
 398     $prompt = "Follow");
 399
 400 interactive("follow-new-buffer",
 401     "Follow a link in a new buffer",
 402     alternates(follow_new_buffer, follow_new_window),
 403     $browser_object = browser_object_links,
 404     $prompt = "Follow");
 405
 406 interactive("follow-new-buffer-background",
 407     "Follow a link in a new buffer in the background",
 408     alternates(follow_new_buffer_background, follow_new_window),
 409     $browser_object = browser_object_links,
 410     $prompt = "Follow");
 411
 412 interactive("follow-new-window",
 413     "Follow a link in a new window",
 414     follow_new_window,
 415     $browser_object = browser_object_links,
 416     $prompt = "Follow");
 417
 418 interactive("find-url", "Open a URL in the current buffer",
 419     alternates(follow_current_buffer, follow_new_buffer, follow_new_window),
 420     $browser_object = browser_object_url);
 421
 422 interactive("find-url-new-buffer",
 423     "Open a URL in a new buffer",
 424     alternates(follow_new_buffer, follow_new_window),
 425     $browser_object = browser_object_url,
 426     $prompt = "Find url");
 427
 428 interactive("find-url-new-window", "Open a URL in a new window",
 429     follow_new_window,
 430     $browser_object = browser_object_url,
 431     $prompt = "Find url");
 432
 433 interactive("find-alternate-url", "Edit the current URL in the minibuffer",
 434     "find-url",
 435     $browser_object =
 436         define_browser_object_class("alternate-url", null,
 437             function (I, prompt) {
 438                 check_buffer(I.buffer, content_buffer);
 439                 var result = yield I.buffer.window.minibuffer.read_url(
 440                     $prompt = prompt,
 441                     $initial_value = I.buffer.display_uri_string);
 442                 yield co_return(result);
 443             }),
 444     $prompt = "Find url");
 445
 446
 447 interactive("up", "Go to the parent directory of the current URL",
 448     "find-url",
 449     $browser_object = browser_object_up_url);
 450
 451 interactive("home",
 452     "Go to the homepage in the current buffer.", "follow",
 453     $browser_object = function () { return homepage; });
 454
 455 interactive("make-window",
 456     "Make a new window with the homepage.",
 457     follow_new_window,
 458     $browser_object = function () { return homepage; });
 459
 460 interactive("focus", null,
 461     function (I) {
 462         var element = yield read_browser_object(I);
 463         browser_element_focus(I.buffer, element);
 464     },
 465     $browser_object = browser_object_frames);
 466
 467 interactive("save",
 468     "Save a browser object.",
 469     function (I) {
 470         var element = yield read_browser_object(I);
 471         var spec = load_spec(element);
 472         var panel;
 473         panel = create_info_panel(I.window, "download-panel",
 474                                   [["downloading",
 475                                     element_get_operation_label(element, "Saving"),
 476                                     load_spec_uri_string(spec)],
 477                                    ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 478         try {
 479             var file = yield I.minibuffer.read_file_check_overwrite(
 480                 $prompt = "Save as:",
 481                 $initial_value = suggest_save_path_from_file_name(suggest_file_name(spec), I.buffer),
 482                 $history = "save");
 483         } finally {
 484             panel.destroy();
 485         }
 486         save_uri(spec, file,
 487                  $buffer = I.buffer,
 488                  $use_cache = false);
 489     },
 490     $browser_object = browser_object_links);
 491
 492
 493 interactive("copy", null,
 494     alternates(copy_text, copy_text_append),
 495     $browser_object = browser_object_links);
 496
 497 interactive("paste-url", "Open a URL from the clipboard in the current buffer.",
 498     alternates(follow_current_buffer, follow_new_buffer, follow_new_window),
 499     $browser_object = browser_object_paste_url);
 500
 501 interactive("paste-url-new-buffer", "Open a URL from the clipboard in a new buffer.",
 502     alternates(follow_new_buffer, follow_new_window),
 503     $browser_object = browser_object_paste_url);
 504
 505 interactive("paste-url-new-window", "Open a URL from the clipboard in a new window.",
 506     follow_new_window,
 507     $browser_object = browser_object_paste_url);
 508
 509 interactive("view-source",
 510     "Toggle between source and rendered views of a URL.",
 511     alternates(view_source, view_source_new_buffer, view_source_new_window),
 512     $browser_object = browser_object_frames);
 513
 514
 515 interactive("shell-command-on-url",
 516     "Run a shell command on the url of a browser object.\n\n"+
 517     "If the given shell command contains the string '{}', the "+
 518     "url will be substituted in its place, otherwise the url "+
 519     "will be added to the end of the command.",
 520     function (I) {
 521         var cwd = I.local.cwd;
 522         var element = yield read_browser_object(I);
 523         var spec = load_spec(element);
 524         var uri = load_spec_uri_string(spec);
 525         var panel = create_info_panel(I.window, "download-panel",
 526                                       [["downloading",
 527                                         element_get_operation_label(element, "Running on", "URI"),
 528                                         load_spec_uri_string(spec)],
 529                                        ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 530         try {
 531             var cmd = yield I.minibuffer.read_shell_command(
 532                 $cwd = cwd,
 533                 $initial_value = load_spec_default_shell_command(spec));
 534         } finally {
 535             panel.destroy();
 536         }
 537         shell_command_with_argument_blind(cmd, uri, $cwd = cwd);
 538     },
 539     $browser_object = browser_object_url,
 540     $prompt = "Shell command");
 541
 542
 543 interactive("shell-command-on-file",
 544     "Download a document to a temporary file and run a shell command on it.",
 545     function (I) {
 546         var cwd = I.local.cwd;
 547         var element = yield read_browser_object(I);
 548         var spec = load_spec(element);
 549         var uri = load_spec_uri_string(spec);
 550         var panel = create_info_panel(I.window, "download-panel",
 551                                       [["downloading",
 552                                         element_get_operation_label(element, "Running on"),
 553                                         load_spec_uri_string(spec)],
 554                                        ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 555         try {
 556             var cmd = yield I.minibuffer.read_shell_command(
 557                 $cwd = cwd,
 558                 $initial_value = load_spec_default_shell_command(spec));
 559         } finally {
 560             panel.destroy();
 561         }
 562         yield browser_element_shell_command(I.buffer, element, cmd, cwd);
 563     },
 564     $browser_object = browser_object_links,
 565     $prompt = "Shell command");
 566
 567
 568 interactive("bookmark",
 569     "Create a bookmark.",
 570     function (I) {
 571         var element = yield read_browser_object(I);
 572         var spec = load_spec(element);
 573         var uri_string = load_spec_uri_string(spec);
 574         var panel = create_info_panel(I.window, "bookmark-panel",
 575                                       [["bookmarking",
 576                                         element_get_operation_label(element, "Bookmarking"),
 577                                         uri_string]]);
 578         try {
 579             var title = yield I.minibuffer.read($prompt = "Bookmark with title:", $initial_value = load_spec_title(spec) || "");
 580         } finally {
 581             panel.destroy();
 582         }
 583         add_bookmark(uri_string, title);
 584         I.minibuffer.message("Added bookmark: " + uri_string + " - " + title);
 585     },
 586     $browser_object = browser_object_frames);
 587
 588
 589 interactive("save-page",
 590     "Save a document, not including any embedded documents such as images "+
 591     "and css.",
 592     function (I) {
 593         check_buffer(I.buffer, content_buffer);
 594         var element = yield read_browser_object(I);
 595         var spec = load_spec(element);
 596         if (!load_spec_document(spec))
 597             throw interactive_error("Element is not associated with a document.");
 598         var suggested_path = suggest_save_path_from_file_name(suggest_file_name(spec), I.buffer);
 599         var panel = create_info_panel(I.window, "download-panel",
 600                                       [["downloading",
 601                                         element_get_operation_label(element, "Saving"),
 602                                         load_spec_uri_string(spec)],
 603                                        ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 604         try {
 605             var file = yield I.minibuffer.read_file_check_overwrite(
 606                 $prompt = "Save page as:",
 607                 $history = "save",
 608                 $initial_value = suggested_path);
 609         } finally {
 610             panel.destroy();
 611         }
 612         save_uri(spec, file, $buffer = I.buffer);
 613     },
 614     $browser_object = browser_object_frames);
 615
 616
 617 interactive("save-page-as-text",
 618     "Save a page as plain text.",
 619     function (I) {
 620         check_buffer(I.buffer, content_buffer);
 621         var element = yield read_browser_object(I);
 622         var spec = load_spec(element);
 623         var doc;
 624         if (!(doc = load_spec_document(spec)))
 625             throw interactive_error("Element is not associated with a document.");
 626         var suggested_path = suggest_save_path_from_file_name(suggest_file_name(spec, "txt"), I.buffer);
 627         var panel = create_info_panel(I.window, "download-panel",
 628                                       [["downloading",
 629                                         element_get_operation_label(element, "Saving", "as text"),
 630                                         load_spec_uri_string(spec)],
 631                                        ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 632         try {
 633             var file = yield I.minibuffer.read_file_check_overwrite(
 634                 $prompt = "Save page as text:",
 635                 $history = "save",
 636                 $initial_value = suggested_path);
 637         } finally {
 638             panel.destroy();
 639         }
 640         save_document_as_text(doc, file, $buffer = I.buffer);
 641     },
 642     $browser_object = browser_object_frames);
 643
 644
 645 interactive("save-page-complete",
 646     "Save a page and all supporting documents, including images, css, "+
 647     "and child frame documents.",
 648     function (I) {
 649         check_buffer(I.buffer, content_buffer);
 650         var element = yield read_browser_object(I);
 651         var spec = load_spec(element);
 652         var doc;
 653         if (!(doc = load_spec_document(spec)))
 654             throw interactive_error("Element is not associated with a document.");
 655         var suggested_path = suggest_save_path_from_file_name(suggest_file_name(spec), I.buffer);
 656         var panel = create_info_panel(I.window, "download-panel",
 657                                       [["downloading",
 658                                         element_get_operation_label(element, "Saving complete"),
 659                                         load_spec_uri_string(spec)],
 660                                        ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 661         try {
 662             var file = yield I.minibuffer.read_file_check_overwrite(
 663                 $prompt = "Save page complete:",
 664                 $history = "save",
 665                 $initial_value = suggested_path);
 666             // FIXME: use proper read function
 667             var dir = yield I.minibuffer.read_file(
 668                 $prompt = "Data Directory:",
 669                 $history = "save",
 670                 $initial_value = file.path + ".support");
 671         } finally {
 672             panel.destroy();
 673         }
 674         save_document_complete(doc, file, dir, $buffer = I.buffer);
 675     },
 676     $browser_object = browser_object_frames);
 677
 678
 679 function view_as_mime_type (I, target) {
 680     I.target = target;
 681     var element = yield read_browser_object(I);
 682     var spec = load_spec(element);
 683
 684     if (target == null)
 685         target = FOLLOW_CURRENT_FRAME;
 686
 687     if (!can_override_mime_type_for_uri(load_spec_uri(spec)))
 688         throw interactive_error("Overriding the MIME type is not currently supported for non-HTTP URLs.");
 689
 690     var mime_type = load_spec_mime_type(spec);
 691     var panel = create_info_panel(I.window, "download-panel",
 692                                   [["downloading",
 693                                     element_get_operation_label(element, "View in browser"),
 694                                     load_spec_uri_string(spec)],
 695                                    ["mime-type", "Mime type:", load_spec_mime_type(spec)]]);
 696     try {
 697         let suggested_type = mime_type;
 698         if (viewable_mime_type_list.indexOf(suggested_type) == -1)
 699             suggested_type = "text/plain";
 700         mime_type = yield I.minibuffer.read_viewable_mime_type(
 701             $prompt = "View internally as",
 702             $initial_value = suggested_type,
 703             $select);
 704         yield override_mime_type_for_next_load(load_spec_uri(spec), mime_type);
 705         browser_object_follow(I.buffer, target, spec);
 706     } finally {
 707         panel.destroy();
 708     }
 709 }
 710
 711 function view_as_mime_type_new_buffer (I) {
 712     yield view_as_mime_type(I, OPEN_NEW_BUFFER);
 713 }
 714
 715 function view_as_mime_type_new_window (I) {
 716     yield view_as_mime_type(I, OPEN_NEW_WINDOW);
 717 }
 718
 719 interactive("view-as-mime-type",
 720     "Display a browser object in the browser using the specified MIME type.",
 721     alternates(view_as_mime_type,
 722                view_as_mime_type_new_buffer,
 723                view_as_mime_type_new_window),
 724     $browser_object = browser_object_frames);
 725
 726
 727 interactive("delete",
 728     "Delete a DOM node, given as a browser object.",
 729     function (I) {
 730         var elem = yield read_browser_object(I);
 731         if (! (elem instanceof Ci.nsIDOMNode))
 732             throw interactive_error("Cannot delete item");
 733         elem.parentNode.removeChild(elem);
 734     },
 735     $browser_object = browser_object_dom_node);
 736
 737
 738 interactive("charset-prefix",
 739     "A prefix command that prompts for a charset to use in a "+
 740     "subsequent navigation command.",
 741     function (I) {
 742         var ccman = Cc["@mozilla.org/charset-converter-manager;1"]
 743             .getService(Ci.nsICharsetConverterManager);
 744         var decoders = ccman.getDecoderList()
 745         var charsets = [];
 746         while (decoders.hasMore())
 747             charsets.push(decoders.getNext());
 748         I.forced_charset = yield I.minibuffer.read(
 749             $prompt = "Charset:",
 750             $completer = new prefix_completer(
 751                 $completions = charsets,
 752                 $get_string = function (x) x.toLowerCase()),
 753             $require_match,
 754             $space_completes);
 755     },
 756     $prefix);
 757
 758
 759 interactive("reload-with-charset",
 760     "Prompt for a charset, and reload the current page, forcing use "+
 761     "of that charset.",
 762     function (I) {
 763         var ccman = Cc["@mozilla.org/charset-converter-manager;1"]
 764             .getService(Ci.nsICharsetConverterManager);
 765         var decoders = ccman.getDecoderList()
 766         var charsets = [];
 767         while (decoders.hasMore())
 768             charsets.push(decoders.getNext());
 769         var forced_charset = yield I.minibuffer.read(
 770             $prompt = "Charset:",
 771             $completer = new prefix_completer(
 772                 $completions = charsets,
 773                 $get_string = function (x) x.toLowerCase()),
 774             $require_match,
 775             $space_completes);
 776         reload(I.buffer, false, null, forced_charset);
 777     });
 778
 779
 780 interactive("yank",
 781     "Paste the contents of the clipboard",
 782     function (I) {
 783         call_builtin_command(I.window, "cmd_paste", true);
 784     });
 785
 786 interactive("kill-region",
 787     "Kill (\"cut\") the selected text.",
 788     function (I) {
 789         call_builtin_command(I.window, "cmd_cut", true);
 790     });
 791
 792 interactive("kill-ring-save",
 793     "Save the region as if killed, but don't kill it.",
 794     function (I) {
 795         call_builtin_command(I.window, "cmd_copy", true);
 796     });
 797
 798 interactive("password-manager",
 799     "Open the password manager.",
 800     "find-url-new-buffer",
 801     $browser_object = "chrome://passwordmgr/content/passwordManager.xul");
 802
 803
 804 interactive("toggle-full-screen",
 805     "Toggle full screen mode for the current window.",
 806     function (I) {
 807         window_set_full_screen(I.window);
 808         if (I.window.fullScreen)
 809             I.minibuffer.message("Fullscreen mode on");
 810         else
 811             I.minibuffer.message("Fullscreen mode off");
 812     });
 813
 814
 815 interactive("image-toggle-zoom-to-fit",
 816     "Toggle zoom-to-fit (viewport) on an image document.",
 817     function (I) {
 818         try {
 819             var doc = I.buffer.document
 820                 .QueryInterface(Ci.nsIImageDocument);
 821             doc.toggleImageSize();
 822             zoom_hook.run(I.buffer);
 823         } catch (e) {
 824             I.minibuffer.message("Not an image document");
 825         }
 826     });
 827
 828
 829 provide("commands");