/*
* noVNC: HTML5 VNC client
* Copyright (C) 2012 Joel Martin
* Copyright (C) 2016 Samuel Mannehed for Cendio AB
* Copyright (C) 2016 Pierre Ossman for Cendio AB
* Licensed under MPL 2.0 (see LICENSE.txt)
*
* See README.md for usage and integration instructions.
*/
/* jslint white: false, browser: true */
/* global window, document.getElementById, Util, WebUtil, RFB, Display */
/* [module]
* import Util from "../core/util";
* import KeyTable from "../core/input/keysym";
* import keysyms from "./keysymdef";
* import RFB from "../core/rfb";
* import Display from "../core/display";
* import WebUtil from "./webutil";
*/
var UI;
(function () {
"use strict";
// Fallback for all uncought errors
window.addEventListener('error', function(event) {
try {
var msg, div, text;
msg = document.getElementById('noVNC_fallback_errormsg');
// Only show the initial error
if (msg.hasChildNodes()) {
return false;
}
div = document.createElement("div");
div.appendChild(document.createTextNode(event.message));
msg.appendChild(div);
div = document.createElement("div");
div.className = 'noVNC_location';
text = event.filename + ":" + event.lineno + ":" + event.colno;
div.appendChild(document.createTextNode(text));
msg.appendChild(div);
if ((event.error !== undefined) &&
(event.error.stack !== undefined)) {
div = document.createElement("div");
div.className = 'noVNC_stack';
div.appendChild(document.createTextNode(event.error.stack));
msg.appendChild(div);
}
document.getElementById('noVNC_fallback_error')
.classList.add("noVNC_open");
} catch (exc) {
document.write("noVNC encountered an error.");
}
// Don't return true since this would prevent the error
// from being printed to the browser console.
return false;
});
// Set up translations
var LINGUAS = ["de", "el", "nl", "sv"];
Util.Localisation.setup(LINGUAS);
if (Util.Localisation.language !== "en") {
WebUtil.load_scripts(
{'app': ["locale/" + Util.Localisation.language + ".js"]});
}
/* [begin skip-as-module] */
// Load supporting scripts
WebUtil.load_scripts(
{'core': ["base64.js", "websock.js", "des.js", "input/keysymdef.js",
"input/xtscancodes.js", "input/util.js", "input/devices.js",
"display.js", "inflator.js", "rfb.js", "input/keysym.js"]});
window.onscriptsload = function () { UI.load(); };
/* [end skip-as-module] */
var _ = Util.Localisation.get;
UI = {
connected: false,
desktopName: "",
resizeTimeout: null,
statusTimeout: null,
hideKeyboardTimeout: null,
idleControlbarTimeout: null,
closeControlbarTimeout: null,
controlbarGrabbed: false,
controlbarDrag: false,
controlbarMouseDownClientY: 0,
controlbarMouseDownOffsetY: 0,
isSafari: false,
rememberedClipSetting: null,
lastKeyboardinput: null,
defaultKeyboardinputLen: 100,
inhibit_reconnect: true,
reconnect_callback: null,
reconnect_password: null,
// Setup rfb object, load settings from browser storage, then call
// UI.init to setup the UI/menus
load: function(callback) {
WebUtil.initSettings(UI.start, callback);
},
// Render default UI and initialize settings menu
start: function(callback) {
// Setup global variables first
UI.isSafari = (navigator.userAgent.indexOf('Safari') !== -1 &&
navigator.userAgent.indexOf('Chrome') === -1);
UI.initSettings();
// Translate the DOM
Util.Localisation.translateDOM();
// Adapt the interface for touch screen devices
if (Util.isTouchDevice) {
document.documentElement.classList.add("noVNC_touch");
// Remove the address bar
setTimeout(function() { window.scrollTo(0, 1); }, 100);
UI.forceSetting('clip', true);
} else {
UI.initSetting('clip', false);
}
// Restore control bar position
if (WebUtil.readSetting('controlbar_pos') === 'right') {
UI.toggleControlbarSide();
}
UI.initFullscreen();
// Setup event handlers
UI.addResizeHandlers();
UI.addControlbarHandlers();
UI.addTouchSpecificHandlers();
UI.addExtraKeysHandlers();
UI.addXvpHandlers();
UI.addConnectionControlHandlers();
UI.addClipboardHandlers();
UI.addSettingsHandlers();
document.getElementById("noVNC_status")
.addEventListener('click', UI.hideStatus);
UI.openControlbar();
// Show the connect panel on first load unless autoconnecting
if (!autoconnect) {
UI.openConnectPanel();
}
UI.updateViewClip();
UI.updateVisualState();
document.getElementById('noVNC_setting_host').focus();
var autoconnect = WebUtil.getConfigVar('autoconnect', false);
if (autoconnect === 'true' || autoconnect == '1') {
autoconnect = true;
UI.connect();
} else {
autoconnect = false;
}
if (typeof callback === "function") {
callback(UI.rfb);
}
},
initFullscreen: function() {
// Only show the button if fullscreen is properly supported
// * Safari doesn't support alphanumerical input while in fullscreen
if (!UI.isSafari &&
(document.documentElement.requestFullscreen ||
document.documentElement.mozRequestFullScreen ||
document.documentElement.webkitRequestFullscreen ||
document.body.msRequestFullscreen)) {
document.getElementById('noVNC_fullscreen_button')
.classList.remove("noVNC_hidden");
UI.addFullscreenHandlers();
}
},
initSettings: function() {
var i;
// Logging selection dropdown
var llevels = ['error', 'warn', 'info', 'debug'];
for (i = 0; i < llevels.length; i += 1) {
UI.addOption(document.getElementById('noVNC_setting_logging'),llevels[i], llevels[i]);
}
// Settings with immediate effects
UI.initSetting('logging', 'warn');
UI.updateLogging();
// if port == 80 (or 443) then it won't be present and should be
// set manually
var port = window.location.port;
if (!port) {
if (window.location.protocol.substring(0,5) == 'https') {
port = 443;
}
else if (window.location.protocol.substring(0,4) == 'http') {
port = 80;
}
}
/* Populate the controls if defaults are provided in the URL */
UI.initSetting('host', window.location.hostname);
UI.initSetting('port', port);
UI.initSetting('encrypt', (window.location.protocol === "https:"));
UI.initSetting('true_color', true);
UI.initSetting('cursor', !Util.isTouchDevice);
UI.initSetting('resize', 'off');
UI.initSetting('shared', true);
UI.initSetting('view_only', false);
UI.initSetting('path', 'websockify');
UI.initSetting('repeaterID', '');
UI.initSetting('reconnect', false);
UI.initSetting('reconnect_delay', 5000);
},
initRFB: function() {
try {
UI.rfb = new RFB({'target': document.getElementById('noVNC_canvas'),
'onNotification': UI.notification,
'onUpdateState': UI.updateState,
'onDisconnected': UI.disconnectFinished,
'onPasswordRequired': UI.passwordRequired,
'onXvpInit': UI.updateXvpButton,
'onClipboard': UI.clipboardReceive,
'onBell': UI.bell,
'onFBUComplete': UI.initialResize,
'onFBResize': UI.updateSessionSize,
'onDesktopName': UI.updateDesktopName});
return true;
} catch (exc) {
var msg = "Unable to create RFB client -- " + exc;
Util.Error(msg);
UI.showStatus(msg, 'error');
return false;
}
},
/* ------^-------
* /INIT
* ==============
* EVENT HANDLERS
* ------v------*/
addResizeHandlers: function() {
window.addEventListener('resize', UI.applyResizeMode);
window.addEventListener('resize', UI.updateViewClip);
window.addEventListener('resize', UI.updateViewDrag);
},
addControlbarHandlers: function() {
document.getElementById("noVNC_control_bar")
.addEventListener('mousemove', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('mouseup', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('mousedown', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('keypress', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('mousedown', UI.keepControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('keypress', UI.keepControlbar);
document.getElementById("noVNC_view_drag_button")
.addEventListener('click', UI.toggleViewDrag);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('mousedown', UI.controlbarHandleMouseDown);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('mouseup', UI.controlbarHandleMouseUp);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('mousemove', UI.dragControlbarHandle);
// resize events aren't available for elements
window.addEventListener('resize', UI.updateControlbarHandle);
var exps = document.getElementsByClassName("noVNC_expander");
for (var i = 0;i < exps.length;i++) {
exps[i].addEventListener('click', UI.toggleExpander);
}
},
addTouchSpecificHandlers: function() {
document.getElementById("noVNC_mouse_button0")
.addEventListener('click', function () { UI.setMouseButton(1); });
document.getElementById("noVNC_mouse_button1")
.addEventListener('click', function () { UI.setMouseButton(2); });
document.getElementById("noVNC_mouse_button2")
.addEventListener('click', function () { UI.setMouseButton(4); });
document.getElementById("noVNC_mouse_button4")
.addEventListener('click', function () { UI.setMouseButton(0); });
document.getElementById("noVNC_keyboard_button")
.addEventListener('click', UI.toggleVirtualKeyboard);
document.getElementById("noVNC_keyboardinput")
.addEventListener('input', UI.keyInput);
document.getElementById("noVNC_keyboardinput")
.addEventListener('focus', UI.onfocusVirtualKeyboard);
document.getElementById("noVNC_keyboardinput")
.addEventListener('blur', UI.onblurVirtualKeyboard);
document.getElementById("noVNC_keyboardinput")
.addEventListener('submit', function () { return false; });
document.documentElement
.addEventListener('mousedown', UI.keepVirtualKeyboard, true);
document.getElementById("noVNC_control_bar")
.addEventListener('touchstart', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('touchmove', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('touchend', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('input', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('touchstart', UI.keepControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('input', UI.keepControlbar);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('touchstart', UI.controlbarHandleMouseDown);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('touchend', UI.controlbarHandleMouseUp);
document.getElementById("noVNC_control_bar_handle")
.addEventListener('touchmove', UI.dragControlbarHandle);
window.addEventListener('load', UI.keyboardinputReset);
},
addExtraKeysHandlers: function() {
document.getElementById("noVNC_toggle_extra_keys_button")
.addEventListener('click', UI.toggleExtraKeys);
document.getElementById("noVNC_toggle_ctrl_button")
.addEventListener('click', UI.toggleCtrl);
document.getElementById("noVNC_toggle_alt_button")
.addEventListener('click', UI.toggleAlt);
document.getElementById("noVNC_send_tab_button")
.addEventListener('click', UI.sendTab);
document.getElementById("noVNC_send_esc_button")
.addEventListener('click', UI.sendEsc);
document.getElementById("noVNC_send_ctrl_alt_del_button")
.addEventListener('click', UI.sendCtrlAltDel);
},
addXvpHandlers: function() {
document.getElementById("noVNC_xvp_shutdown_button")
.addEventListener('click', function() { UI.rfb.xvpShutdown(); });
document.getElementById("noVNC_xvp_reboot_button")
.addEventListener('click', function() { UI.rfb.xvpReboot(); });
document.getElementById("noVNC_xvp_reset_button")
.addEventListener('click', function() { UI.rfb.xvpReset(); });
document.getElementById("noVNC_xvp_button")
.addEventListener('click', UI.toggleXvpPanel);
},
addConnectionControlHandlers: function() {
document.getElementById("noVNC_disconnect_button")
.addEventListener('click', UI.disconnect);
document.getElementById("noVNC_connect_button")
.addEventListener('click', UI.connect);
document.getElementById("noVNC_cancel_reconnect_button")
.addEventListener('click', UI.cancelReconnect);
document.getElementById("noVNC_password_button")
.addEventListener('click', UI.setPassword);
},
addClipboardHandlers: function() {
document.getElementById("noVNC_clipboard_button")
.addEventListener('click', UI.toggleClipboardPanel);
document.getElementById("noVNC_clipboard_text")
.addEventListener('focus', UI.displayBlur);
document.getElementById("noVNC_clipboard_text")
.addEventListener('blur', UI.displayFocus);
document.getElementById("noVNC_clipboard_text")
.addEventListener('change', UI.clipboardSend);
document.getElementById("noVNC_clipboard_clear_button")
.addEventListener('click', UI.clipboardClear);
},
// Add a call to save settings when the element changes,
// unless the optional parameter changeFunc is used instead.
addSettingChangeHandler: function(name, changeFunc) {
var settingElem = document.getElementById("noVNC_setting_" + name);
if (changeFunc === undefined) {
changeFunc = function () { UI.saveSetting(name); };
}
settingElem.addEventListener('change', changeFunc);
},
addSettingsHandlers: function() {
document.getElementById("noVNC_settings_button")
.addEventListener('click', UI.toggleSettingsPanel);
UI.addSettingChangeHandler('encrypt');
UI.addSettingChangeHandler('true_color');
UI.addSettingChangeHandler('cursor');
UI.addSettingChangeHandler('resize');
UI.addSettingChangeHandler('resize', UI.enableDisableViewClip);
UI.addSettingChangeHandler('resize', UI.applyResizeMode);
UI.addSettingChangeHandler('clip');
UI.addSettingChangeHandler('shared');
UI.addSettingChangeHandler('view_only');
UI.addSettingChangeHandler('host');
UI.addSettingChangeHandler('port');
UI.addSettingChangeHandler('path');
UI.addSettingChangeHandler('repeaterID');
UI.addSettingChangeHandler('logging');
UI.addSettingChangeHandler('logging', UI.updateLogging);
UI.addSettingChangeHandler('reconnect');
UI.addSettingChangeHandler('reconnect_delay');
},
addFullscreenHandlers: function() {
document.getElementById("noVNC_fullscreen_button")
.addEventListener('click', UI.toggleFullscreen);
window.addEventListener('fullscreenchange', UI.updateFullscreenButton);
window.addEventListener('mozfullscreenchange', UI.updateFullscreenButton);
window.addEventListener('webkitfullscreenchange', UI.updateFullscreenButton);
window.addEventListener('msfullscreenchange', UI.updateFullscreenButton);
},
/* ------^-------
* /EVENT HANDLERS
* ==============
* VISUAL
* ------v------*/
updateState: function(rfb, state, oldstate) {
var msg;
document.documentElement.classList.remove("noVNC_connecting");
document.documentElement.classList.remove("noVNC_connected");
document.documentElement.classList.remove("noVNC_disconnecting");
document.documentElement.classList.remove("noVNC_reconnecting");
switch (state) {
case 'connecting':
document.getElementById("noVNC_transition_text").textContent = _("Connecting...");
document.documentElement.classList.add("noVNC_connecting");
break;
case 'connected':
UI.connected = true;
UI.inhibit_reconnect = false;
document.documentElement.classList.add("noVNC_connected");
if (rfb && rfb.get_encrypt()) {
msg = _("Connected (encrypted) to ") + UI.desktopName;
} else {
msg = _("Connected (unencrypted) to ") + UI.desktopName;
}
UI.showStatus(msg);
break;
case 'disconnecting':
UI.connected = false;
document.getElementById("noVNC_transition_text").textContent = _("Disconnecting...");
document.documentElement.classList.add("noVNC_disconnecting");
break;
case 'disconnected':
UI.showStatus(_("Disconnected"));
break;
default:
msg = "Invalid UI state";
Util.Error(msg);
UI.showStatus(msg, 'error');
break;
}
UI.updateVisualState();
},
// Disable/enable controls depending on connection state
updateVisualState: function() {
//Util.Debug(">> updateVisualState");
document.getElementById('noVNC_setting_encrypt').disabled = UI.connected;
document.getElementById('noVNC_setting_true_color').disabled = UI.connected;
if (Util.browserSupportsCursorURIs()) {
document.getElementById('noVNC_setting_cursor').disabled = UI.connected;
} else {
UI.updateSetting('cursor', !Util.isTouchDevice);
document.getElementById('noVNC_setting_cursor').disabled = true;
}
UI.enableDisableViewClip();
document.getElementById('noVNC_setting_shared').disabled = UI.connected;
document.getElementById('noVNC_setting_view_only').disabled = UI.connected;
document.getElementById('noVNC_setting_host').disabled = UI.connected;
document.getElementById('noVNC_setting_port').disabled = UI.connected;
document.getElementById('noVNC_setting_path').disabled = UI.connected;
document.getElementById('noVNC_setting_repeaterID').disabled = UI.connected;
document.getElementById('noVNC_setting_reconnect').disabled = UI.connected;
document.getElementById('noVNC_setting_reconnect_delay').disabled = UI.connected;
if (UI.connected) {
UI.updateViewClip();
UI.setMouseButton(1);
// Hide the controlbar after 2 seconds
UI.closeControlbarTimeout = setTimeout(UI.closeControlbar, 2000);
} else {
UI.updateXvpButton(0);
UI.keepControlbar();
}
// Hide input related buttons in view only mode
if (UI.rfb && UI.rfb.get_view_only()) {
document.getElementById('noVNC_keyboard_button')
.classList.add('noVNC_hidden');
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.add('noVNC_hidden');
} else {
document.getElementById('noVNC_keyboard_button')
.classList.remove('noVNC_hidden');
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.remove('noVNC_hidden');
}
// State change disables viewport dragging.
// It is enabled (toggled) by direct click on the button
UI.setViewDrag(false);
// State change also closes the password dialog
document.getElementById('noVNC_password_dlg')
.classList.remove('noVNC_open');
//Util.Debug("<< updateVisualState");
},
showStatus: function(text, status_type, time) {
var statusElem = document.getElementById('noVNC_status');
clearTimeout(UI.statusTimeout);
if (typeof status_type === 'undefined') {
status_type = 'normal';
}
statusElem.classList.remove("noVNC_status_normal",
"noVNC_status_warn",
"noVNC_status_error");
switch (status_type) {
case 'warning':
case 'warn':
statusElem.classList.add("noVNC_status_warn");
break;
case 'error':
statusElem.classList.add("noVNC_status_error");
break;
case 'normal':
case 'info':
default:
statusElem.classList.add("noVNC_status_normal");
break;
}
statusElem.textContent = text;
statusElem.classList.add("noVNC_open");
// If no time was specified, show the status for 1.5 seconds
if (typeof time === 'undefined') {
time = 1500;
}
// Error messages do not timeout
if (status_type !== 'error') {
UI.statusTimeout = window.setTimeout(UI.hideStatus, time);
}
},
hideStatus: function() {
clearTimeout(UI.statusTimeout);
document.getElementById('noVNC_status').classList.remove("noVNC_open");
},
notification: function (rfb, msg, level, options) {
UI.showStatus(msg, level);
},
activateControlbar: function(event) {
clearTimeout(UI.idleControlbarTimeout);
// We manipulate the anchor instead of the actual control
// bar in order to avoid creating new a stacking group
document.getElementById('noVNC_control_bar_anchor')
.classList.remove("noVNC_idle");
UI.idleControlbarTimeout = window.setTimeout(UI.idleControlbar, 2000);
},
idleControlbar: function() {
document.getElementById('noVNC_control_bar_anchor')
.classList.add("noVNC_idle");
},
keepControlbar: function() {
clearTimeout(UI.closeControlbarTimeout);
},
openControlbar: function() {
document.getElementById('noVNC_control_bar')
.classList.add("noVNC_open");
},
closeControlbar: function() {
UI.closeAllPanels();
document.getElementById('noVNC_control_bar')
.classList.remove("noVNC_open");
},
toggleControlbar: function() {
if (document.getElementById('noVNC_control_bar')
.classList.contains("noVNC_open")) {
UI.closeControlbar();
} else {
UI.openControlbar();
}
},
toggleControlbarSide: function () {
// Temporarily disable animation to avoid weird movement
var bar = document.getElementById('noVNC_control_bar');
bar.style.transitionDuration = '0s';
bar.addEventListener('transitionend', function () { this.style.transitionDuration = ""; });
var anchor = document.getElementById('noVNC_control_bar_anchor');
if (anchor.classList.contains("noVNC_right")) {
WebUtil.writeSetting('controlbar_pos', 'left');
anchor.classList.remove("noVNC_right");
} else {
WebUtil.writeSetting('controlbar_pos', 'right');
anchor.classList.add("noVNC_right");
}
// Consider this a movement of the handle
UI.controlbarDrag = true;
},
dragControlbarHandle: function (e) {
if (!UI.controlbarGrabbed) return;
var ptr = Util.getPointerEvent(e);
var anchor = document.getElementById('noVNC_control_bar_anchor');
if (ptr.clientX < (window.innerWidth * 0.1)) {
if (anchor.classList.contains("noVNC_right")) {
UI.toggleControlbarSide();
}
} else if (ptr.clientX > (window.innerWidth * 0.9)) {
if (!anchor.classList.contains("noVNC_right")) {
UI.toggleControlbarSide();
}
}
if (!UI.controlbarDrag) {
// The goal is to trigger on a certain physical width, the
// devicePixelRatio brings us a bit closer but is not optimal.
var dragThreshold = 10 * (window.devicePixelRatio || 1);
var dragDistance = Math.abs(ptr.clientY - UI.controlbarMouseDownClientY);
if (dragDistance < dragThreshold) return;
UI.controlbarDrag = true;
}
var eventY = ptr.clientY - UI.controlbarMouseDownOffsetY;
UI.moveControlbarHandle(eventY);
e.preventDefault();
e.stopPropagation();
UI.keepControlbar();
UI.activateControlbar();
},
// Move the handle but don't allow any position outside the bounds
moveControlbarHandle: function (viewportRelativeY) {
var handle = document.getElementById("noVNC_control_bar_handle");
var handleHeight = handle.getBoundingClientRect().height;
var controlbarBounds = document.getElementById("noVNC_control_bar")
.getBoundingClientRect();
var margin = 10;
// These heights need to be non-zero for the below logic to work
if (handleHeight === 0 || controlbarBounds.height === 0) {
return;
}
var newY = viewportRelativeY;
// Check if the coordinates are outside the control bar
if (newY < controlbarBounds.top + margin) {
// Force coordinates to be below the top of the control bar
newY = controlbarBounds.top + margin;
} else if (newY > controlbarBounds.top +
controlbarBounds.height - handleHeight - margin) {
// Force coordinates to be above the bottom of the control bar
newY = controlbarBounds.top +
controlbarBounds.height - handleHeight - margin;
}
// Corner case: control bar too small for stable position
if (controlbarBounds.height < (handleHeight + margin * 2)) {
newY = controlbarBounds.top +
(controlbarBounds.height - handleHeight) / 2;
}
// The transform needs coordinates that are relative to the parent
var parentRelativeY = newY - controlbarBounds.top;
handle.style.transform = "translateY(" + parentRelativeY + "px)";
},
updateControlbarHandle: function () {
// Since the control bar is fixed on the viewport and not the page,
// the move function expects coordinates relative the the viewport.
var handle = document.getElementById("noVNC_control_bar_handle");
var handleBounds = handle.getBoundingClientRect();
UI.moveControlbarHandle(handleBounds.top);
},
controlbarHandleMouseUp: function(e) {
if ((e.type == "mouseup") && (e.button != 0)) return;
// mouseup and mousedown on the same place toggles the controlbar
if (UI.controlbarGrabbed && !UI.controlbarDrag) {
UI.toggleControlbar();
e.preventDefault();
e.stopPropagation();
UI.keepControlbar();
UI.activateControlbar();
}
UI.controlbarGrabbed = false;
},
controlbarHandleMouseDown: function(e) {
if ((e.type == "mousedown") && (e.button != 0)) return;
var ptr = Util.getPointerEvent(e);
var handle = document.getElementById("noVNC_control_bar_handle");
var bounds = handle.getBoundingClientRect();
Util.setCapture(handle);
UI.controlbarGrabbed = true;
UI.controlbarDrag = false;
UI.controlbarMouseDownClientY = ptr.clientY;
UI.controlbarMouseDownOffsetY = ptr.clientY - bounds.top;
e.preventDefault();
e.stopPropagation();
UI.keepControlbar();
UI.activateControlbar();
},
toggleExpander: function(e) {
if (this.classList.contains("noVNC_open")) {
this.classList.remove("noVNC_open");
} else {
this.classList.add("noVNC_open");
}
},
/* ------^-------
* /VISUAL
* ==============
* SETTINGS
* ------v------*/
// Initial page load read/initialization of settings
initSetting: function(name, defVal) {
// Check Query string followed by cookie
var val = WebUtil.getConfigVar(name);
if (val === null) {
val = WebUtil.readSetting(name, defVal);
}
UI.updateSetting(name, val);
return val;
},
// Update cookie and form control setting. If value is not set, then
// updates from control to current cookie setting.
updateSetting: function(name, value) {
// Save the cookie for this session
if (typeof value !== 'undefined') {
WebUtil.writeSetting(name, value);
}
// Update the settings control
value = UI.getSetting(name);
var ctrl = document.getElementById('noVNC_setting_' + name);
if (ctrl.type === 'checkbox') {
ctrl.checked = value;
} else if (typeof ctrl.options !== 'undefined') {
for (var i = 0; i < ctrl.options.length; i += 1) {
if (ctrl.options[i].value === value) {
ctrl.selectedIndex = i;
break;
}
}
} else {
/*Weird IE9 error leads to 'null' appearring
in textboxes instead of ''.*/
if (value === null) {
value = "";
}
ctrl.value = value;
}
},
// Save control setting to cookie
saveSetting: function(name) {
var val, ctrl = document.getElementById('noVNC_setting_' + name);
if (ctrl.type === 'checkbox') {
val = ctrl.checked;
} else if (typeof ctrl.options !== 'undefined') {
val = ctrl.options[ctrl.selectedIndex].value;
} else {
val = ctrl.value;
}
WebUtil.writeSetting(name, val);
//Util.Debug("Setting saved '" + name + "=" + val + "'");
return val;
},
// Force a setting to be a certain value
forceSetting: function(name, val) {
UI.updateSetting(name, val);
return val;
},
// Read form control compatible setting from cookie
getSetting: function(name) {
var ctrl = document.getElementById('noVNC_setting_' + name);
var val = WebUtil.readSetting(name);
if (typeof val !== 'undefined' && val !== null && ctrl.type === 'checkbox') {
if (val.toString().toLowerCase() in {'0':1, 'no':1, 'false':1}) {
val = false;
} else {
val = true;
}
}
return val;
},
/* ------^-------
* /SETTINGS
* ==============
* PANELS
* ------v------*/
closeAllPanels: function() {
UI.closeSettingsPanel();
UI.closeXvpPanel();
UI.closeClipboardPanel();
UI.closeExtraKeys();
},
/* ------^-------
* /PANELS
* ==============
* SETTINGS (panel)
* ------v------*/
openSettingsPanel: function() {
UI.closeAllPanels();
UI.openControlbar();
// Refresh UI elements from saved cookies
UI.updateSetting('encrypt');
UI.updateSetting('true_color');
if (Util.browserSupportsCursorURIs()) {
UI.updateSetting('cursor');
} else {
UI.updateSetting('cursor', !Util.isTouchDevice);
document.getElementById('noVNC_setting_cursor').disabled = true;
}
UI.updateSetting('clip');
UI.updateSetting('resize');
UI.updateSetting('shared');
UI.updateSetting('view_only');
UI.updateSetting('path');
UI.updateSetting('repeaterID');
UI.updateSetting('logging');
UI.updateSetting('reconnect');
UI.updateSetting('reconnect_delay');
document.getElementById('noVNC_settings')
.classList.add("noVNC_open");
document.getElementById('noVNC_settings_button')
.classList.add("noVNC_selected");
},
closeSettingsPanel: function() {
document.getElementById('noVNC_settings')
.classList.remove("noVNC_open");
document.getElementById('noVNC_settings_button')
.classList.remove("noVNC_selected");
},
toggleSettingsPanel: function() {
if (document.getElementById('noVNC_settings')
.classList.contains("noVNC_open")) {
UI.closeSettingsPanel();
} else {
UI.openSettingsPanel();
}
},
/* ------^-------
* /SETTINGS
* ==============
* XVP
* ------v------*/
openXvpPanel: function() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_xvp')
.classList.add("noVNC_open");
document.getElementById('noVNC_xvp_button')
.classList.add("noVNC_selected");
},
closeXvpPanel: function() {
document.getElementById('noVNC_xvp')
.classList.remove("noVNC_open");
document.getElementById('noVNC_xvp_button')
.classList.remove("noVNC_selected");
},
toggleXvpPanel: function() {
if (document.getElementById('noVNC_xvp')
.classList.contains("noVNC_open")) {
UI.closeXvpPanel();
} else {
UI.openXvpPanel();
}
},
// Disable/enable XVP button
updateXvpButton: function(ver) {
if (ver >= 1 && !UI.rfb.get_view_only()) {
document.getElementById('noVNC_xvp_button')
.classList.remove("noVNC_hidden");
} else {
document.getElementById('noVNC_xvp_button')
.classList.add("noVNC_hidden");
// Close XVP panel if open
UI.closeXvpPanel();
}
},
/* ------^-------
* /XVP
* ==============
* CLIPBOARD
* ------v------*/
openClipboardPanel: function() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_clipboard')
.classList.add("noVNC_open");
document.getElementById('noVNC_clipboard_button')
.classList.add("noVNC_selected");
},
closeClipboardPanel: function() {
document.getElementById('noVNC_clipboard')
.classList.remove("noVNC_open");
document.getElementById('noVNC_clipboard_button')
.classList.remove("noVNC_selected");
},
toggleClipboardPanel: function() {
if (document.getElementById('noVNC_clipboard')
.classList.contains("noVNC_open")) {
UI.closeClipboardPanel();
} else {
UI.openClipboardPanel();
}
},
clipboardReceive: function(rfb, text) {
Util.Debug(">> UI.clipboardReceive: " + text.substr(0,40) + "...");
document.getElementById('noVNC_clipboard_text').value = text;
Util.Debug("<< UI.clipboardReceive");
},
clipboardClear: function() {
document.getElementById('noVNC_clipboard_text').value = "";
UI.rfb.clipboardPasteFrom("");
},
clipboardSend: function() {
var text = document.getElementById('noVNC_clipboard_text').value;
Util.Debug(">> UI.clipboardSend: " + text.substr(0,40) + "...");
UI.rfb.clipboardPasteFrom(text);
Util.Debug("<< UI.clipboardSend");
},
/* ------^-------
* /CLIPBOARD
* ==============
* CONNECTION
* ------v------*/
openConnectPanel: function() {
document.getElementById('noVNC_connect_dlg')
.classList.add("noVNC_open");
},
closeConnectPanel: function() {
document.getElementById('noVNC_connect_dlg')
.classList.remove("noVNC_open");
},
connect: function(event, password) {
var host = UI.getSetting('host');
var port = UI.getSetting('port');
var path = UI.getSetting('path');
if (typeof password === 'undefined') {
password = WebUtil.getConfigVar('password');
}
if (password === null) {
password = undefined;
}
if ((!host) || (!port)) {
var msg = _("Must set host and port");
Util.Error(msg);
UI.showStatus(msg, 'error');
return;
}
if (!UI.initRFB()) return;
UI.closeAllPanels();
UI.closeConnectPanel();
UI.rfb.set_encrypt(UI.getSetting('encrypt'));
UI.rfb.set_true_color(UI.getSetting('true_color'));
UI.rfb.set_local_cursor(UI.getSetting('cursor'));
UI.rfb.set_shared(UI.getSetting('shared'));
UI.rfb.set_view_only(UI.getSetting('view_only'));
UI.rfb.set_repeaterID(UI.getSetting('repeaterID'));
UI.rfb.connect(host, port, password, path);
},
disconnect: function() {
UI.closeAllPanels();
UI.rfb.disconnect();
// Disable automatic reconnecting
UI.inhibit_reconnect = true;
// Restore the callback used for initial resize
UI.rfb.set_onFBUComplete(UI.initialResize);
// Don't display the connection settings until we're actually disconnected
},
reconnect: function() {
UI.reconnect_callback = null;
// if reconnect has been disabled in the meantime, do nothing.
if (UI.inhibit_reconnect) {
return;
}
UI.connect(null, UI.reconnect_password);
},
disconnectFinished: function (rfb, reason) {
if (typeof reason !== 'undefined') {
UI.showStatus(reason, 'error');
} else if (UI.getSetting('reconnect', false) === true && !UI.inhibit_reconnect) {
document.getElementById("noVNC_transition_text").textContent = _("Reconnecting...");
document.documentElement.classList.add("noVNC_reconnecting");
var delay = parseInt(UI.getSetting('reconnect_delay'));
UI.reconnect_callback = setTimeout(UI.reconnect, delay);
return;
}
UI.openControlbar();
UI.openConnectPanel();
},
cancelReconnect: function() {
if (UI.reconnect_callback !== null) {
clearTimeout(UI.reconnect_callback);
UI.reconnect_callback = null;
}
document.documentElement.classList.remove("noVNC_reconnecting");
UI.openControlbar();
UI.openConnectPanel();
},
/* ------^-------
* /CONNECTION
* ==============
* PASSWORD
* ------v------*/
passwordRequired: function(rfb, msg) {
document.getElementById('noVNC_password_dlg')
.classList.add('noVNC_open');
setTimeout(function () {
document.getElementById('noVNC_password_input').focus();
}, 100);
if (typeof msg === 'undefined') {
msg = _("Password is required");
}
Util.Warn(msg);
UI.showStatus(msg, "warning");
},
setPassword: function(e) {
var password = document.getElementById('noVNC_password_input').value;
UI.rfb.sendPassword(password);
UI.reconnect_password = password;
document.getElementById('noVNC_password_dlg')
.classList.remove('noVNC_open');
// Prevent actually submitting the form
e.preventDefault();
},
/* ------^-------
* /PASSWORD
* ==============
* FULLSCREEN
* ------v------*/
toggleFullscreen: function() {
if (document.fullscreenElement || // alternative standard method
document.mozFullScreenElement || // currently working methods
document.webkitFullscreenElement ||
document.msFullscreenElement) {
if (document.exitFullscreen) {
document.exitFullscreen();
} else if (document.mozCancelFullScreen) {
document.mozCancelFullScreen();
} else if (document.webkitExitFullscreen) {
document.webkitExitFullscreen();
} else if (document.msExitFullscreen) {
document.msExitFullscreen();
}
} else {
if (document.documentElement.requestFullscreen) {
document.documentElement.requestFullscreen();
} else if (document.documentElement.mozRequestFullScreen) {
document.documentElement.mozRequestFullScreen();
} else if (document.documentElement.webkitRequestFullscreen) {
document.documentElement.webkitRequestFullscreen(Element.ALLOW_KEYBOARD_INPUT);
} else if (document.body.msRequestFullscreen) {
document.body.msRequestFullscreen();
}
}
UI.enableDisableViewClip();
UI.updateFullscreenButton();
},
updateFullscreenButton: function() {
if (document.fullscreenElement || // alternative standard method
document.mozFullScreenElement || // currently working methods
document.webkitFullscreenElement ||
document.msFullscreenElement ) {
document.getElementById('noVNC_fullscreen_button')
.classList.add("noVNC_selected");
} else {
document.getElementById('noVNC_fullscreen_button')
.classList.remove("noVNC_selected");
}
},
/* ------^-------
* /FULLSCREEN
* ==============
* RESIZE
* ------v------*/
// Apply remote resizing or local scaling
applyResizeMode: function() {
if (!UI.rfb) return;
var screen = UI.screenSize();
if (screen && UI.connected && UI.rfb.get_display()) {
var display = UI.rfb.get_display();
var resizeMode = UI.getSetting('resize');
display.set_scale(1);
if (resizeMode === 'remote') {
// Request changing the resolution of the remote display to
// the size of the local browser viewport.
// In order to not send multiple requests before the browser-resize
// is finished we wait 0.5 seconds before sending the request.
clearTimeout(UI.resizeTimeout);
UI.resizeTimeout = setTimeout(function(){
// Request a remote size covering the viewport
if (UI.rfb.requestDesktopSize(screen.w, screen.h)) {
Util.Debug('Requested new desktop size: ' +
screen.w + 'x' + screen.h);
}
}, 500);
} else if (resizeMode === 'scale' || resizeMode === 'downscale') {
var downscaleOnly = resizeMode === 'downscale';
display.autoscale(screen.w, screen.h, downscaleOnly);
}
}
},
// Gets the the size of the available viewport in the browser window
screenSize: function() {
var screen = document.getElementById('noVNC_screen');
var width, height;
screen.style.overflow = "hidden";
width = screen.offsetWidth;
height = screen.offsetHeight;
screen.style.overflow = "auto";
return {w: width, h: height};
},
// Normally we only apply the current resize mode after a window resize
// event. This means that when a new connection is opened, there is no
// resize mode active.
// We have to wait until the first FBU because this is where the client
// will find the supported encodings of the server. Some calls later in
// the chain is dependant on knowing the server-capabilities.
initialResize: function(rfb, fbu) {
UI.applyResizeMode();
// After doing this once, we remove the callback.
UI.rfb.set_onFBUComplete(function() { });
},
/* ------^-------
* /RESIZE
* ==============
* CLIPPING
* ------v------*/
// Set and configure viewport clipping
setViewClip: function(clip) {
UI.updateSetting('clip', clip);
UI.updateViewClip();
},
// Update parameters that depend on the clip setting
updateViewClip: function() {
if (!UI.rfb) return;
var display = UI.rfb.get_display();
var cur_clip = display.get_viewport();
var new_clip = UI.getSetting('clip');
if (cur_clip !== new_clip) {
display.set_viewport(new_clip);
}
var size = UI.screenSize();
if (new_clip && size) {
// When clipping is enabled, the screen is limited to
// the size of the browser window.
display.viewportChangeSize(size.w, size.h);
}
},
// Handle special cases where clipping is forced on/off or locked
enableDisableViewClip: function() {
var resizeSetting = UI.getSetting('resize');
if (resizeSetting === 'downscale' || resizeSetting === 'scale') {
// Disable clipping if we are scaling
UI.forceSetting('clip', false);
UI.setViewClip(false);
document.getElementById('noVNC_setting_clip').disabled = true;
} else {
document.getElementById('noVNC_setting_clip').disabled =
UI.connected || Util.isTouchDevice;
if (Util.isTouchDevice) {
UI.setViewClip(true);
}
}
},
/* ------^-------
* /CLIPPING
* ==============
* VIEWDRAG
* ------v------*/
toggleViewDrag: function() {
if (!UI.rfb) return;
var drag = UI.rfb.get_viewportDrag();
UI.setViewDrag(!drag);
},
// Set the view drag mode which moves the viewport on mouse drags
setViewDrag: function(drag) {
if (!UI.rfb) return;
UI.rfb.set_viewportDrag(drag);
UI.updateViewDrag();
},
updateViewDrag: function() {
var clipping = false;
if (!UI.connected) return;
// Check if viewport drag is possible. It is only possible
// if the remote display is clipping the client display.
if (UI.rfb.get_display().get_viewport() &&
UI.rfb.get_display().clippingDisplay()) {
clipping = true;
}
var viewDragButton = document.getElementById('noVNC_view_drag_button');
if (!clipping &&
UI.rfb.get_viewportDrag()) {
// The size of the remote display is the same or smaller
// than the client display. Make sure viewport drag isn't
// active when it can't be used.
UI.rfb.set_viewportDrag(false);
}
if (UI.rfb.get_viewportDrag()) {
viewDragButton.classList.add("noVNC_selected");
} else {
viewDragButton.classList.remove("noVNC_selected");
}
// Different behaviour for touch vs non-touch
// The button is disabled instead of hidden on touch devices
if (Util.isTouchDevice) {
viewDragButton.classList.remove("noVNC_hidden");
if (clipping) {
viewDragButton.disabled = false;
} else {
viewDragButton.disabled = true;
}
} else {
viewDragButton.disabled = false;
if (clipping) {
viewDragButton.classList.remove("noVNC_hidden");
} else {
viewDragButton.classList.add("noVNC_hidden");
}
}
},
/* ------^-------
* /VIEWDRAG
* ==============
* KEYBOARD
* ------v------*/
showVirtualKeyboard: function() {
if (!Util.isTouchDevice) return;
var input = document.getElementById('noVNC_keyboardinput');
if (document.activeElement == input) return;
input.focus();
try {
var l = input.value.length;
// Move the caret to the end
input.setSelectionRange(l, l);
} catch (err) {} // setSelectionRange is undefined in Google Chrome
},
hideVirtualKeyboard: function() {
if (!Util.isTouchDevice) return;
var input = document.getElementById('noVNC_keyboardinput');
if (document.activeElement != input) return;
input.blur();
},
toggleVirtualKeyboard: function () {
if (document.getElementById('noVNC_keyboard_button')
.classList.contains("noVNC_selected")) {
UI.hideVirtualKeyboard();
} else {
UI.showVirtualKeyboard();
}
},
onfocusVirtualKeyboard: function(event) {
document.getElementById('noVNC_keyboard_button')
.classList.add("noVNC_selected");
},
onblurVirtualKeyboard: function(event) {
document.getElementById('noVNC_keyboard_button')
.classList.remove("noVNC_selected");
},
keepVirtualKeyboard: function(event) {
var input = document.getElementById('noVNC_keyboardinput');
// Only prevent focus change if the virtual keyboard is active
if (document.activeElement != input) {
return;
}
// Only allow focus to move to other elements that need
// focus to function properly
if (event.target.form !== undefined) {
switch (event.target.type) {
case 'text':
case 'email':
case 'search':
case 'password':
case 'tel':
case 'url':
case 'textarea':
case 'select-one':
case 'select-multiple':
return;
}
}
event.preventDefault();
},
keyboardinputReset: function() {
var kbi = document.getElementById('noVNC_keyboardinput');
kbi.value = new Array(UI.defaultKeyboardinputLen).join("_");
UI.lastKeyboardinput = kbi.value;
},
// When normal keyboard events are left uncought, use the input events from
// the keyboardinput element instead and generate the corresponding key events.
// This code is required since some browsers on Android are inconsistent in
// sending keyCodes in the normal keyboard events when using on screen keyboards.
keyInput: function(event) {
if (!UI.rfb) return;
var newValue = event.target.value;
if (!UI.lastKeyboardinput) {
UI.keyboardinputReset();
}
var oldValue = UI.lastKeyboardinput;
var newLen;
try {
// Try to check caret position since whitespace at the end
// will not be considered by value.length in some browsers
newLen = Math.max(event.target.selectionStart, newValue.length);
} catch (err) {
// selectionStart is undefined in Google Chrome
newLen = newValue.length;
}
var oldLen = oldValue.length;
var backspaces;
var inputs = newLen - oldLen;
if (inputs < 0) {
backspaces = -inputs;
} else {
backspaces = 0;
}
// Compare the old string with the new to account for
// text-corrections or other input that modify existing text
var i;
for (i = 0; i < Math.min(oldLen, newLen); i++) {
if (newValue.charAt(i) != oldValue.charAt(i)) {
inputs = newLen - i;
backspaces = oldLen - i;
break;
}
}
// Send the key events
for (i = 0; i < backspaces; i++) {
UI.rfb.sendKey(KeyTable.XK_BackSpace);
}
for (i = newLen - inputs; i < newLen; i++) {
UI.rfb.sendKey(keysyms.fromUnicode(newValue.charCodeAt(i)).keysym);
}
// Control the text content length in the keyboardinput element
if (newLen > 2 * UI.defaultKeyboardinputLen) {
UI.keyboardinputReset();
} else if (newLen < 1) {
// There always have to be some text in the keyboardinput
// element with which backspace can interact.
UI.keyboardinputReset();
// This sometimes causes the keyboard to disappear for a second
// but it is required for the android keyboard to recognize that
// text has been added to the field
event.target.blur();
// This has to be ran outside of the input handler in order to work
setTimeout(event.target.focus.bind(event.target), 0);
} else {
UI.lastKeyboardinput = newValue;
}
},
/* ------^-------
* /KEYBOARD
* ==============
* EXTRA KEYS
* ------v------*/
openExtraKeys: function() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_modifiers')
.classList.add("noVNC_open");
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.add("noVNC_selected");
},
closeExtraKeys: function() {
document.getElementById('noVNC_modifiers')
.classList.remove("noVNC_open");
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.remove("noVNC_selected");
},
toggleExtraKeys: function() {
if(document.getElementById('noVNC_modifiers')
.classList.contains("noVNC_open")) {
UI.closeExtraKeys();
} else {
UI.openExtraKeys();
}
},
sendEsc: function() {
UI.rfb.sendKey(KeyTable.XK_Escape);
},
sendTab: function() {
UI.rfb.sendKey(KeyTable.XK_Tab);
},
toggleCtrl: function() {
var btn = document.getElementById('noVNC_toggle_ctrl_button');
if (btn.classList.contains("noVNC_selected")) {
UI.rfb.sendKey(KeyTable.XK_Control_L, false);
btn.classList.remove("noVNC_selected");
} else {
UI.rfb.sendKey(KeyTable.XK_Control_L, true);
btn.classList.add("noVNC_selected");
}
},
toggleAlt: function() {
var btn = document.getElementById('noVNC_toggle_alt_button');
if (btn.classList.contains("noVNC_selected")) {
UI.rfb.sendKey(KeyTable.XK_Alt_L, false);
btn.classList.remove("noVNC_selected");
} else {
UI.rfb.sendKey(KeyTable.XK_Alt_L, true);
btn.classList.add("noVNC_selected");
}
},
sendCtrlAltDel: function() {
UI.rfb.sendCtrlAltDel();
},
/* ------^-------
* /EXTRA KEYS
* ==============
* MISC
* ------v------*/
setMouseButton: function(num) {
var view_only = UI.rfb.get_view_only();
if (UI.rfb && !view_only) {
UI.rfb.get_mouse().set_touchButton(num);
}
var blist = [0, 1,2,4];
for (var b = 0; b < blist.length; b++) {
var button = document.getElementById('noVNC_mouse_button' +
blist[b]);
if (blist[b] === num && !view_only) {
button.classList.remove("noVNC_hidden");
} else {
button.classList.add("noVNC_hidden");
}
}
},
displayBlur: function() {
if (UI.rfb && !UI.rfb.get_view_only()) {
UI.rfb.get_keyboard().set_focused(false);
UI.rfb.get_mouse().set_focused(false);
}
},
displayFocus: function() {
if (UI.rfb && !UI.rfb.get_view_only()) {
UI.rfb.get_keyboard().set_focused(true);
UI.rfb.get_mouse().set_focused(true);
}
},
updateLogging: function() {
WebUtil.init_logging(UI.getSetting('logging'));
},
updateSessionSize: function(rfb, width, height) {
UI.updateViewClip();
UI.updateViewDrag();
},
updateDesktopName: function(rfb, name) {
UI.desktopName = name;
// Display the desktop name in the document title
document.title = name + " - noVNC";
},
bell: function(rfb) {
if (WebUtil.getConfigVar('bell', 'on') === 'on') {
document.getElementById('noVNC_bell').play();
}
},
//Helper to add options to dropdown.
addOption: function(selectbox, text, value) {
var optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
},
/* ------^-------
* /MISC
* ==============
*/
};
/* [module] UI.load(); */
})();
/* [module] export default UI; */