src/main/webapp/scripts/interface.js

   1
   2 // UI Definition
   3 var GuacamoleUI = {
   4
   5     "LOGOUT_PROMPT" :   "Logging out will disconnect all of your active "
   6                       + "Guacamole sessions. Are you sure you wish to log out?",
   7
   8     /* Detection Constants */
   9
  10     "LONG_PRESS_DETECT_TIMEOUT"     : 800, /* milliseconds */
  11     "LONG_PRESS_MOVEMENT_THRESHOLD" : 10,  /* pixels */
  12     "MENU_CLOSE_DETECT_TIMEOUT"     : 500, /* milliseconds */
  13     "MENU_OPEN_DETECT_TIMEOUT"      : 325, /* milliseconds */
  14     "KEYBOARD_AUTO_RESIZE_INTERVAL" : 30,  /* milliseconds */
  15
  16     /* Animation Constants */
  17
  18     "MENU_SHADE_STEPS"    : 10, /* frames */
  19     "MENU_SHADE_INTERVAL" : 30, /* milliseconds */
  20     "MENU_SHOW_STEPS"     : 5,  /* frames */
  21     "MENU_SHOW_INTERVAL"  : 30, /* milliseconds */
  22
  23     /* OSK Mode Constants */
  24     "OSK_MODE_NATIVE" : 1, /* "Show Keyboard" will show the platform's native OSK */
  25     "OSK_MODE_GUAC"   : 2, /* "Show Keyboard" will show Guac's built-in OSK */
  26
  27     /* UI Elements */
  28
  29     "viewport"    : document.getElementById("viewportClone"),
  30     "display"     : document.getElementById("display"),
  31     "menu"        : document.getElementById("menu"),
  32     "menuControl" : document.getElementById("menuControl"),
  33     "touchMenu"   : document.getElementById("touchMenu"),
  34     "logo"        : document.getElementById("status-logo"),
  35     "eventTarget" : document.getElementById("eventTarget"),
  36
  37     "buttons": {
  38
  39         "showClipboard": document.getElementById("showClipboard"),
  40         "showKeyboard" : document.getElementById("showKeyboard"),
  41         "ctrlAltDelete": document.getElementById("ctrlAltDelete"),
  42         "reconnect"    : document.getElementById("reconnect"),
  43         "logout"       : document.getElementById("logout"),
  44
  45         "touchShowClipboard" : document.getElementById("touchShowClipboard"),
  46         "touchShowKeyboard"  : document.getElementById("touchShowKeyboard"),
  47         "touchLogout"        : document.getElementById("touchLogout")
  48
  49     },
  50
  51     "containers": {
  52         "state"         : document.getElementById("statusDialog"),
  53         "clipboard"     : document.getElementById("clipboardDiv"),
  54         "touchClipboard": document.getElementById("touchClipboardDiv"),
  55         "keyboard"      : document.getElementById("keyboardContainer")
  56     },
  57
  58     "state"          : document.getElementById("statusText"),
  59     "clipboard"      : document.getElementById("clipboard"),
  60     "touchClipboard" : document.getElementById("touchClipboard")
  61
  62 };
  63
  64 // Constant UI initialization and behavior
  65 (function() {
  66
  67     var menu_shaded = false;
  68
  69     var shade_interval = null;
  70     var show_interval = null;
  71
  72     // Cache error image (might not be available when error occurs)
  73     var guacErrorImage = new Image();
  74     guacErrorImage.src = "images/noguacamole-logo-24.png";
  75
  76     // Function for adding a class to an element
  77     var addClass;
  78
  79     // Function for removing a class from an element
  80     var removeClass;
  81
  82     // If Node.classList is supported, implement addClass/removeClass using that
  83     if (Node.classList) {
  84
  85         addClass = function(element, classname) {
  86             element.classList.add(classname);
  87         };
  88
  89         removeClass = function(element, classname) {
  90             element.classList.remove(classname);
  91         };
  92
  93     }
  94
  95     // Otherwise, implement own
  96     else {
  97
  98         addClass = function(element, classname) {
  99
 100             // Simply add new class
 101             element.className += " " + classname;
 102
 103         };
 104
 105         removeClass = function(element, classname) {
 106
 107             // Filter out classes with given name
 108             element.className = element.className.replace(/([^ ]+)[ ]*/g,
 109                 function(match, testClassname, spaces, offset, string) {
 110
 111                     // If same class, remove
 112                     if (testClassname == classname)
 113                         return "";
 114
 115                     // Otherwise, allow
 116                     return match;
 117
 118                 }
 119             );
 120
 121         };
 122
 123     }
 124
 125
 126     GuacamoleUI.hideStatus = function() {
 127         removeClass(document.body, "guac-error");
 128         GuacamoleUI.containers.state.style.visibility = "hidden";
 129         GuacamoleUI.display.style.opacity = "1";
 130     };
 131
 132     GuacamoleUI.showStatus = function(text) {
 133         removeClass(document.body, "guac-error");
 134         GuacamoleUI.containers.state.style.visibility = "visible";
 135         GuacamoleUI.state.textContent = text;
 136         GuacamoleUI.display.style.opacity = "1";
 137     };
 138
 139     GuacamoleUI.showError = function(error) {
 140         addClass(document.body, "guac-error");
 141         GuacamoleUI.state.textContent = error;
 142         GuacamoleUI.display.style.opacity = "0.1";
 143     };
 144
 145     GuacamoleUI.hideTouchMenu = function() {
 146         GuacamoleUI.touchMenu.style.visibility = "hidden";
 147     };
 148
 149     function positionCentered(element) {
 150         element.style.left =
 151             ((GuacamoleUI.viewport.offsetWidth - element.offsetWidth) / 2
 152             + window.pageXOffset)
 153             + "px";
 154
 155         element.style.top =
 156             ((GuacamoleUI.viewport.offsetHeight - element.offsetHeight) / 2
 157             + window.pageYOffset)
 158             + "px";
 159     }
 160
 161     GuacamoleUI.showTouchMenu = function() {
 162         positionCentered(GuacamoleUI.touchMenu);
 163         GuacamoleUI.touchMenu.style.visibility = "visible";
 164     };
 165
 166     GuacamoleUI.hideTouchClipboard = function() {
 167         GuacamoleUI.touchClipboard.blur();
 168         GuacamoleUI.containers.touchClipboard.style.visibility = "hidden";
 169     };
 170
 171     GuacamoleUI.showTouchClipboard = function() {
 172         positionCentered(GuacamoleUI.containers.touchClipboard);
 173         GuacamoleUI.containers.touchClipboard.style.visibility = "visible";
 174     };
 175
 176     GuacamoleUI.shadeMenu = function() {
 177
 178         if (!menu_shaded) {
 179
 180             var step = Math.floor(GuacamoleUI.menu.offsetHeight / GuacamoleUI.MENU_SHADE_STEPS) + 1;
 181             var offset = 0;
 182             menu_shaded = true;
 183
 184             window.clearInterval(show_interval);
 185             shade_interval = window.setInterval(function() {
 186
 187                 offset -= step;
 188
 189                 GuacamoleUI.menu.style.transform =
 190                 GuacamoleUI.menu.style.WebkitTransform =
 191                 GuacamoleUI.menu.style.MozTransform =
 192                 GuacamoleUI.menu.style.OTransform =
 193                 GuacamoleUI.menu.style.msTransform =
 194
 195                     "translateY(" + offset + "px)";
 196
 197                 if (offset <= -GuacamoleUI.menu.offsetHeight) {
 198                     window.clearInterval(shade_interval);
 199                     GuacamoleUI.menu.style.visiblity = "hidden";
 200                 }
 201
 202             }, GuacamoleUI.MENU_SHADE_INTERVAL);
 203         }
 204
 205     };
 206
 207     GuacamoleUI.showMenu = function() {
 208
 209         if (menu_shaded) {
 210
 211             var step = Math.floor(GuacamoleUI.menu.offsetHeight / GuacamoleUI.MENU_SHOW_STEPS) + 1;
 212             var offset = -GuacamoleUI.menu.offsetHeight;
 213             menu_shaded = false;
 214             GuacamoleUI.menu.style.visiblity = "";
 215
 216             window.clearInterval(shade_interval);
 217             show_interval = window.setInterval(function() {
 218
 219                 offset += step;
 220
 221                 if (offset >= 0) {
 222                     offset = 0;
 223                     window.clearInterval(show_interval);
 224                 }
 225
 226                 GuacamoleUI.menu.style.transform =
 227                 GuacamoleUI.menu.style.WebkitTransform =
 228                 GuacamoleUI.menu.style.MozTransform =
 229                 GuacamoleUI.menu.style.OTransform =
 230                 GuacamoleUI.menu.style.msTransform =
 231
 232                     "translateY(" + offset + "px)";
 233
 234             }, GuacamoleUI.MENU_SHOW_INTERVAL);
 235         }
 236
 237     };
 238
 239     // Show/Hide clipboard
 240     GuacamoleUI.buttons.showClipboard.onclick = function() {
 241
 242         var displayed = GuacamoleUI.containers.clipboard.style.display;
 243         if (displayed != "block") {
 244             GuacamoleUI.containers.clipboard.style.display = "block";
 245             GuacamoleUI.buttons.showClipboard.innerHTML = "Hide Clipboard";
 246         }
 247         else {
 248             GuacamoleUI.containers.clipboard.style.display = "none";
 249             GuacamoleUI.buttons.showClipboard.innerHTML = "Show Clipboard";
 250             GuacamoleUI.clipboard.onchange();
 251         }
 252
 253     };
 254
 255     GuacamoleUI.buttons.touchShowClipboard.onclick = function() {
 256         GuacamoleUI.hideTouchMenu();
 257         GuacamoleUI.showTouchClipboard();
 258     };
 259
 260     // Show/Hide keyboard
 261     var keyboardResizeInterval = null;
 262     GuacamoleUI.buttons.showKeyboard.onclick = function() {
 263
 264         // If Guac OSK shown, hide it.
 265         var displayed = GuacamoleUI.containers.keyboard.style.display;
 266         if (displayed == "block") {
 267             GuacamoleUI.containers.keyboard.style.display = "none";
 268             GuacamoleUI.buttons.showKeyboard.textContent = "Show Keyboard";
 269
 270             window.onresize = null;
 271             window.clearInterval(keyboardResizeInterval);
 272         }
 273
 274         // Otherwise, show it
 275         else {
 276
 277             // Ensure event target is NOT focused if we are using the Guac OSK.
 278             GuacamoleUI.eventTarget.blur();
 279
 280             GuacamoleUI.containers.keyboard.style.display = "block";
 281             GuacamoleUI.buttons.showKeyboard.textContent = "Hide Keyboard";
 282
 283             // Automatically update size
 284             window.onresize = updateKeyboardSize;
 285             keyboardResizeInterval = window.setInterval(updateKeyboardSize,
 286                 GuacamoleUI.KEYBOARD_AUTO_RESIZE_INTERVAL);
 287
 288             updateKeyboardSize();
 289
 290         }
 291
 292     };
 293
 294     // Touch-specific keyboard show
 295     GuacamoleUI.buttons.touchShowKeyboard.onclick =
 296         function(e) {
 297
 298             // Center event target in case browser automatically centers
 299             // input fields on focus.
 300             GuacamoleUI.eventTarget.style.left =
 301                 (window.pageXOffset + GuacamoleUI.viewport.offsetWidth / 2) + "px";
 302
 303             GuacamoleUI.eventTarget.style.top =
 304                 (window.pageYOffset + GuacamoleUI.viewport.offsetHeight / 2) + "px";
 305
 306             GuacamoleUI.eventTarget.focus();
 307             GuacamoleUI.hideTouchMenu();
 308
 309         };
 310
 311     // Logout
 312     GuacamoleUI.buttons.logout.onclick =
 313     GuacamoleUI.buttons.touchLogout.onclick =
 314         function() {
 315
 316             // Logout after warning user about session disconnect
 317             if (confirm(GuacamoleUI.LOGOUT_PROMPT)) {
 318                 window.location.href = "logout";
 319                 GuacamoleUI.hideTouchMenu();
 320             }
 321
 322         };
 323
 324     // Timeouts for detecting if users wants menu to open or close
 325     var detectMenuOpenTimeout = null;
 326     var detectMenuCloseTimeout = null;
 327
 328     // Clear detection timeouts
 329     GuacamoleUI.resetMenuDetect = function() {
 330
 331         if (detectMenuOpenTimeout != null) {
 332             window.clearTimeout(detectMenuOpenTimeout);
 333             detectMenuOpenTimeout = null;
 334         }
 335
 336         if (detectMenuCloseTimeout != null) {
 337             window.clearTimeout(detectMenuCloseTimeout);
 338             detectMenuCloseTimeout = null;
 339         }
 340
 341     };
 342
 343     // Initiate detection of menu open action. If not canceled through some
 344     // user event, menu will open.
 345     GuacamoleUI.startMenuOpenDetect = function() {
 346
 347         if (!detectMenuOpenTimeout) {
 348
 349             // Clear detection state
 350             GuacamoleUI.resetMenuDetect();
 351
 352             // Wait and then show menu
 353             detectMenuOpenTimeout = window.setTimeout(function() {
 354
 355                 // If menu opened via mouse, do not show native OSK
 356                 GuacamoleUI.oskMode = GuacamoleUI.OSK_MODE_GUAC;
 357
 358                 GuacamoleUI.showMenu();
 359                 detectMenuOpenTimeout = null;
 360             }, GuacamoleUI.MENU_OPEN_DETECT_TIMEOUT);
 361
 362         }
 363
 364     };
 365
 366     // Initiate detection of menu close action. If not canceled through some
 367     // user mouse event, menu will close.
 368     GuacamoleUI.startMenuCloseDetect = function() {
 369
 370         if (!detectMenuCloseTimeout) {
 371
 372             // Clear detection state
 373             GuacamoleUI.resetMenuDetect();
 374
 375             // Wait and then shade menu
 376             detectMenuCloseTimeout = window.setTimeout(function() {
 377                 GuacamoleUI.shadeMenu();
 378                 detectMenuCloseTimeout = null;
 379             }, GuacamoleUI.MENU_CLOSE_DETECT_TIMEOUT);
 380
 381         }
 382
 383     };
 384
 385     // Show menu if mouseover any part of menu
 386     GuacamoleUI.menu.addEventListener('mouseover', GuacamoleUI.showMenu, true);
 387
 388     // Stop detecting menu state change intents if mouse is over menu
 389     GuacamoleUI.menu.addEventListener('mouseover', GuacamoleUI.resetMenuDetect, true);
 390
 391     // When mouse hovers over top of screen, start detection of intent to open menu
 392     GuacamoleUI.menuControl.addEventListener('mousemove', GuacamoleUI.startMenuOpenDetect, true);
 393
 394     var long_press_start_x = 0;
 395     var long_press_start_y = 0;
 396     var menuShowLongPressTimeout = null;
 397
 398     GuacamoleUI.startLongPressDetect = function() {
 399
 400         if (!menuShowLongPressTimeout) {
 401
 402             menuShowLongPressTimeout = window.setTimeout(function() {
 403
 404                 menuShowLongPressTimeout = null;
 405
 406                 // Assume native OSK if menu shown via long-press
 407                 GuacamoleUI.oskMode = GuacamoleUI.OSK_MODE_NATIVE;
 408                 GuacamoleUI.showTouchMenu();
 409
 410             }, GuacamoleUI.LONG_PRESS_DETECT_TIMEOUT);
 411
 412         }
 413     };
 414
 415     GuacamoleUI.stopLongPressDetect = function() {
 416         window.clearTimeout(menuShowLongPressTimeout);
 417         menuShowLongPressTimeout = null;
 418     };
 419
 420     // Detect long-press at bottom of screen
 421     GuacamoleUI.display.addEventListener('touchstart', function(e) {
 422
 423         // Close menu if shown
 424         GuacamoleUI.shadeMenu();
 425         GuacamoleUI.hideTouchMenu();
 426         GuacamoleUI.hideTouchClipboard();
 427
 428         // Record touch location
 429         if (e.touches.length == 1) {
 430             var touch = e.touches[0];
 431             long_press_start_x = touch.screenX;
 432             long_press_start_y = touch.screenY;
 433         }
 434
 435         // Start detection
 436         GuacamoleUI.startLongPressDetect();
 437
 438     }, true);
 439
 440     // Stop detection if touch moves significantly
 441     GuacamoleUI.display.addEventListener('touchmove', function(e) {
 442
 443         // If touch distance from start exceeds threshold, cancel long press
 444         var touch = e.touches[0];
 445         if (Math.abs(touch.screenX - long_press_start_x) >= GuacamoleUI.LONG_PRESS_MOVEMENT_THRESHOLD
 446             || Math.abs(touch.screenY - long_press_start_y) >= GuacamoleUI.LONG_PRESS_MOVEMENT_THRESHOLD)
 447             GuacamoleUI.stopLongPressDetect();
 448
 449     }, true);
 450
 451     // Stop detection if press stops
 452     GuacamoleUI.display.addEventListener('touchend', GuacamoleUI.stopLongPressDetect, true);
 453
 454     // Close menu on mouse movement
 455     GuacamoleUI.display.addEventListener('mousemove', GuacamoleUI.startMenuCloseDetect, true);
 456     GuacamoleUI.display.addEventListener('mousedown', GuacamoleUI.startMenuCloseDetect, true);
 457
 458     // Reconnect button
 459     GuacamoleUI.buttons.reconnect.onclick = function() {
 460         window.location.reload();
 461     };
 462
 463     // On-screen keyboard
 464     GuacamoleUI.keyboard = new Guacamole.OnScreenKeyboard("layouts/en-us-qwerty.xml");
 465     GuacamoleUI.containers.keyboard.appendChild(GuacamoleUI.keyboard.getElement());
 466
 467     // Function for automatically updating keyboard size
 468     var lastKeyboardWidth;
 469     function updateKeyboardSize() {
 470         var currentSize = GuacamoleUI.keyboard.getElement().offsetWidth;
 471         if (lastKeyboardWidth != currentSize) {
 472             GuacamoleUI.keyboard.resize(currentSize);
 473             lastKeyboardWidth = currentSize;
 474         }
 475     };
 476
 477     // Turn off autocorrect and autocapitalization on eventTarget
 478     GuacamoleUI.eventTarget.setAttribute("autocorrect", "off");
 479     GuacamoleUI.eventTarget.setAttribute("autocapitalize", "off");
 480
 481     // Automatically reposition event target on scroll
 482     window.addEventListener("scroll", function() {
 483         GuacamoleUI.eventTarget.style.left = window.pageXOffset + "px";
 484         GuacamoleUI.eventTarget.style.top = window.pageYOffset + "px";
 485     });
 486
 487 })();
 488
 489 // Tie UI events / behavior to a specific Guacamole client
 490 GuacamoleUI.attach = function(guac) {
 491
 492     var title_prefix = null;
 493     var connection_name = "Guacamole";
 494
 495     var guac_display = guac.getDisplay();
 496
 497     // Set document title appropriately, based on prefix and connection name
 498     function updateTitle() {
 499
 500         // Use title prefix if present
 501         if (title_prefix) {
 502
 503             document.title = title_prefix;
 504
 505             // Include connection name, if present
 506             if (connection_name)
 507                 document.title += " " + connection_name;
 508
 509         }
 510
 511         // Otherwise, just set to connection name
 512         else if (connection_name)
 513             document.title = connection_name;
 514
 515     }
 516
 517     // When mouse enters display, start detection of intent to close menu
 518     guac_display.addEventListener('mouseover', GuacamoleUI.startMenuCloseDetect, true);
 519
 520     guac_display.onclick = function(e) {
 521         e.preventDefault();
 522         return false;
 523     };
 524
 525     // Mouse
 526     var mouse = new Guacamole.Mouse(guac_display);
 527     var touch = new Guacamole.Mouse.Touchpad(guac_display);
 528     touch.onmousedown = touch.onmouseup = touch.onmousemove =
 529     mouse.onmousedown = mouse.onmouseup = mouse.onmousemove =
 530         function(mouseState) {
 531
 532             // Determine mouse position within view
 533             var mouse_view_x = mouseState.x + guac_display.offsetLeft - window.pageXOffset;
 534             var mouse_view_y = mouseState.y + guac_display.offsetTop  - window.pageYOffset;
 535
 536             // Determine viewport dimensioins
 537             var view_width  = GuacamoleUI.viewport.offsetWidth;
 538             var view_height = GuacamoleUI.viewport.offsetHeight;
 539
 540             // Determine scroll amounts based on mouse position relative to document
 541
 542             var scroll_amount_x;
 543             if (mouse_view_x > view_width)
 544                 scroll_amount_x = mouse_view_x - view_width;
 545             else if (mouse_view_x < 0)
 546                 scroll_amount_x = mouse_view_x;
 547             else
 548                 scroll_amount_x = 0;
 549
 550             var scroll_amount_y;
 551             if (mouse_view_y > view_height)
 552                 scroll_amount_y = mouse_view_y - view_height;
 553             else if (mouse_view_y < 0)
 554                 scroll_amount_y = mouse_view_y;
 555             else
 556                 scroll_amount_y = 0;
 557
 558             // Scroll (if necessary) to keep mouse on screen.
 559             window.scrollBy(scroll_amount_x, scroll_amount_y);
 560
 561             // Send mouse event
 562             guac.sendMouseState(mouseState);
 563
 564         };
 565
 566     // Keyboard
 567     var keyboard = new Guacamole.Keyboard(document);
 568
 569     // Monitor whether the event target is focused
 570     var eventTargetFocused = false;
 571
 572     // Save length for calculation of changed value
 573     var currentLength = GuacamoleUI.eventTarget.value.length;
 574
 575     GuacamoleUI.eventTarget.onfocus = function() {
 576         eventTargetFocused = true;
 577         GuacamoleUI.eventTarget.value = "";
 578         currentLength = 0;
 579     };
 580
 581     GuacamoleUI.eventTarget.onblur = function() {
 582         eventTargetFocused = false;
 583     };
 584
 585     // If text is input directly into event target without typing (as with
 586     // voice input, for example), type automatically.
 587     GuacamoleUI.eventTarget.oninput = function(e) {
 588
 589         // Calculate current length and change in length
 590         var oldLength = currentLength;
 591         currentLength = GuacamoleUI.eventTarget.value.length;
 592
 593         // If deleted or replaced text, ignore
 594         if (currentLength <= oldLength)
 595             return;
 596
 597         // Get changed text
 598         var text = GuacamoleUI.eventTarget.value.substring(oldLength);
 599
 600         // Send each character
 601         for (var i=0; i<text.length; i++) {
 602
 603             // Get char code
 604             var charCode = text.charCodeAt(i);
 605
 606             // Convert to keysym
 607             var keysym = 0x003F; // Default to a question mark
 608             if (charCode >= 0x0000 && charCode <= 0x00FF)
 609                 keysym = charCode;
 610             else if (charCode >= 0x0100 && charCode <= 0x10FFFF)
 611                 keysym = 0x01000000 | charCode;
 612
 613             // Send keysym only if not already pressed
 614             if (!keyboard.pressed[keysym]) {
 615
 616                 // Press and release key
 617                 guac.sendKeyEvent(1, keysym);
 618                 guac.sendKeyEvent(0, keysym);
 619
 620             }
 621
 622         }
 623
 624     }
 625
 626     function isTypableCharacter(keysym) {
 627         return (keysym & 0xFFFF00) != 0xFF00;
 628     }
 629
 630     function disableKeyboard() {
 631         keyboard.onkeydown = null;
 632         keyboard.onkeyup = null;
 633     }
 634
 635     function enableKeyboard() {
 636
 637         keyboard.onkeydown = function (keysym) {
 638             guac.sendKeyEvent(1, keysym);
 639             return eventTargetFocused && isTypableCharacter(keysym);
 640         };
 641
 642         keyboard.onkeyup = function (keysym) {
 643             guac.sendKeyEvent(0, keysym);
 644             return eventTargetFocused && isTypableCharacter(keysym);
 645         };
 646
 647     }
 648
 649     // Enable keyboard by default
 650     enableKeyboard();
 651
 652     // Handle client state change
 653     guac.onstatechange = function(clientState) {
 654
 655         switch (clientState) {
 656
 657             // Idle
 658             case 0:
 659                 GuacamoleUI.showStatus("Idle.");
 660                 title_prefix = "[Idle]";
 661                 break;
 662
 663             // Connecting
 664             case 1:
 665                 GuacamoleUI.shadeMenu();
 666                 GuacamoleUI.showStatus("Connecting...");
 667                 title_prefix = "[Connecting...]";
 668                 break;
 669
 670             // Connected + waiting
 671             case 2:
 672                 GuacamoleUI.showStatus("Connected, waiting for first update...");
 673                 title_prefix = "[Waiting...]";
 674                 break;
 675
 676             // Connected
 677             case 3:
 678                 GuacamoleUI.hideStatus();
 679                 title_prefix = null;
 680                 break;
 681
 682             // Disconnecting
 683             case 4:
 684                 GuacamoleUI.showStatus("Disconnecting...");
 685                 title_prefix = "[Disconnecting...]";
 686                 break;
 687
 688             // Disconnected
 689             case 5:
 690                 GuacamoleUI.showStatus("Disconnected.");
 691                 title_prefix = "[Disconnected]";
 692                 break;
 693
 694             // Unknown status code
 695             default:
 696                 GuacamoleUI.showStatus("[UNKNOWN STATUS]");
 697
 698         }
 699
 700         updateTitle();
 701     };
 702
 703     // Name instruction handler
 704     guac.onname = function(name) {
 705         connection_name = name;
 706         updateTitle();
 707     };
 708
 709     // Error handler
 710     guac.onerror = function(error) {
 711
 712         // Disconnect, if connected
 713         guac.disconnect();
 714
 715         // Display error message
 716         GuacamoleUI.showError(error);
 717
 718     };
 719
 720     // Disconnect on close
 721     window.onunload = function() {
 722         guac.disconnect();
 723     };
 724
 725     // Handle clipboard events
 726     GuacamoleUI.clipboard.onchange = function() {
 727
 728         var text = GuacamoleUI.clipboard.value;
 729         GuacamoleUI.touchClipboard.value = text;
 730         guac.setClipboard(text);
 731
 732     };
 733
 734     GuacamoleUI.touchClipboard.onchange = function() {
 735
 736         var text = GuacamoleUI.touchClipboard.value;
 737         GuacamoleUI.clipboard.value = text;
 738         guac.setClipboard(text);
 739
 740     };
 741
 742     // Ignore keypresses when clipboard is focused
 743     GuacamoleUI.clipboard.onfocus =
 744     GuacamoleUI.touchClipboard.onfocus = function() {
 745         disableKeyboard();
 746     };
 747
 748     // Capture keypresses when clipboard is not focused
 749     GuacamoleUI.clipboard.onblur =
 750     GuacamoleUI.touchClipboard.onblur = function() {
 751         enableKeyboard();
 752     };
 753
 754     // Server copy handler
 755     guac.onclipboard = function(data) {
 756         GuacamoleUI.clipboard.value = data;
 757         GuacamoleUI.touchClipboard.value = data;
 758     };
 759
 760     GuacamoleUI.keyboard.onkeydown = function(keysym) {
 761         guac.sendKeyEvent(1, keysym);
 762     };
 763
 764     GuacamoleUI.keyboard.onkeyup = function(keysym) {
 765         guac.sendKeyEvent(0, keysym);
 766     };
 767
 768     // Send Ctrl-Alt-Delete
 769     GuacamoleUI.buttons.ctrlAltDelete.onclick = function() {
 770
 771         var KEYSYM_CTRL   = 0xFFE3;
 772         var KEYSYM_ALT    = 0xFFE9;
 773         var KEYSYM_DELETE = 0xFFFF;
 774
 775         guac.sendKeyEvent(1, KEYSYM_CTRL);
 776         guac.sendKeyEvent(1, KEYSYM_ALT);
 777         guac.sendKeyEvent(1, KEYSYM_DELETE);
 778         guac.sendKeyEvent(0, KEYSYM_DELETE);
 779         guac.sendKeyEvent(0, KEYSYM_ALT);
 780         guac.sendKeyEvent(0, KEYSYM_CTRL);
 781     };
 782
 783 };