/*
* noVNC: HTML5 VNC client
* Copyright (C) 2019 The noVNC Authors
* Licensed under MPL 2.0 (see LICENSE.txt)
*
* See README.md for usage and integration instructions.
*/
window._noVNC_has_module_support = true;
window.addEventListener("load", function() {
if (window._noVNC_has_module_support) return;
var loader = document.createElement("script");
loader.src = "vendor/browser-es-module-loader/dist/browser-es-module-loader.js";
document.head.appendChild(loader);
});
window.addEventListener("load", function() {
var connect_btn_el = document.getElementById("noVNC_connect_button");
if (typeof(connect_btn_el) != 'undefined' && connect_btn_el != null)
{
connect_btn_el.click();
}
});
import * as Log from '../core/util/logging.js';
import _, { l10n } from './localization.js';
import { isTouchDevice, isSafari, isIOS, isAndroid, dragThreshold }
from '../core/util/browser.js';
import { setCapture, getPointerEvent } from '../core/util/events.js';
import KeyTable from "../core/input/keysym.js";
import keysyms from "../core/input/keysymdef.js";
import Keyboard from "../core/input/keyboard.js";
import RFB from "../core/rfb.js";
import * as WebUtil from "./webutil.js";
var delta = 500;
var lastKeypressTime = 0;
var currentEventCount = -1;
var idleCounter = 0;
const UI = {
connected: false,
desktopName: "",
statusTimeout: null,
hideKeyboardTimeout: null,
idleControlbarTimeout: null,
closeControlbarTimeout: null,
controlbarGrabbed: false,
controlbarDrag: false,
controlbarMouseDownClientY: 0,
controlbarMouseDownOffsetY: 0,
lastKeyboardinput: null,
defaultKeyboardinputLen: 100,
needToCheckClipboardChange: false,
inhibit_reconnect: true,
reconnect_callback: null,
reconnect_password: null,
prime(callback) {
if (document.readyState === "interactive" || document.readyState === "complete") {
UI.load(callback);
} else {
document.addEventListener('DOMContentLoaded', UI.load.bind(UI, callback));
}
},
// Setup rfb object, load settings from browser storage, then call
// UI.init to setup the UI/menus
load(callback) {
WebUtil.initSettings(UI.start, callback);
},
// Render default UI and initialize settings menu
start(callback) {
UI.initSettings();
// Translate the DOM
l10n.translateDOM();
WebUtil.fetchJSON('../package.json')
.then((packageInfo) => {
Array.from(document.getElementsByClassName('noVNC_version')).forEach(el => el.innerText = packageInfo.version);
})
.catch((err) => {
Log.Error("Couldn't fetch package.json: " + err);
Array.from(document.getElementsByClassName('noVNC_version_wrapper'))
.concat(Array.from(document.getElementsByClassName('noVNC_version_separator')))
.forEach(el => el.style.display = 'none');
});
// Adapt the interface for touch screen devices
if (isTouchDevice) {
document.documentElement.classList.add("noVNC_touch");
// Remove the address bar
setTimeout(() => window.scrollTo(0, 1), 100);
}
// Restore control bar position
if (WebUtil.readSetting('controlbar_pos') === 'right') {
UI.toggleControlbarSide();
}
UI.initFullscreen();
// Setup event handlers
UI.addControlbarHandlers();
UI.addTouchSpecificHandlers();
UI.addExtraKeysHandlers();
UI.addMachineHandlers();
UI.addConnectionControlHandlers();
UI.addClipboardHandlers();
UI.addSettingsHandlers();
document.getElementById("noVNC_status")
.addEventListener('click', UI.hideStatus);
// Bootstrap fallback input handler
UI.keyboardinputReset();
UI.openControlbar();
UI.updateVisualState('init');
document.documentElement.classList.remove("noVNC_loading");
let autoconnect = WebUtil.getConfigVar('autoconnect', false);
if (autoconnect === 'true' || autoconnect == '1') {
autoconnect = true;
UI.connect();
} else {
autoconnect = false;
// Show the connect panel on first load unless autoconnecting
UI.openConnectPanel();
}
if (typeof callback === "function") {
callback(UI.rfb);
}
},
initFullscreen() {
// Only show the button if fullscreen is properly supported
// * Safari doesn't support alphanumerical input while in fullscreen
if (!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() {
// Logging selection dropdown
const llevels = ['error', 'warn', 'info', 'debug'];
for (let 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
let 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('view_clip', false);
UI.initSetting('shared', true);
UI.initSetting('view_only', false);
UI.initSetting('show_dot', false);
UI.initSetting('path', 'websockify');
UI.initSetting('repeaterID', '');
UI.initSetting('reconnect', false);
UI.initSetting('reconnect_delay', 5000);
UI.initSetting('idle_disconnect', 20);
UI.initSetting('prefer_local_cursor', true);
UI.initSetting('toggle_control_panel', false);
UI.initSetting('enable_perf_stats', false);
if (WebUtil.isInsideKasmVDI()) {
UI.initSetting('video_quality', 1);
UI.initSetting('clipboard_up', false);
UI.initSetting('clipboard_down', false);
UI.initSetting('clipboard_seamless', false);
UI.initSetting('enable_webp', false);
UI.initSetting('resize', 'off');
} else {
UI.initSetting('video_quality', 3);
UI.initSetting('clipboard_up', true);
UI.initSetting('clipboard_down', true);
UI.initSetting('clipboard_seamless', true);
UI.initSetting('enable_webp', true);
UI.initSetting('resize', 'remote');
}
UI.setupSettingLabels();
},
// Adds a link to the label elements on the corresponding input elements
setupSettingLabels() {
const labels = document.getElementsByTagName('LABEL');
for (let i = 0; i < labels.length; i++) {
const htmlFor = labels[i].htmlFor;
if (htmlFor != '') {
const elem = document.getElementById(htmlFor);
if (elem) elem.label = labels[i];
} else {
// If 'for' isn't set, use the first input element child
const children = labels[i].children;
for (let j = 0; j < children.length; j++) {
if (children[j].form !== undefined) {
children[j].label = labels[i];
break;
}
}
}
}
},
/* ------^-------
* /INIT
* ==============
* EVENT HANDLERS
* ------v------*/
addControlbarHandlers() {
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('keydown', UI.activateControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('mousedown', UI.keepControlbar);
document.getElementById("noVNC_control_bar")
.addEventListener('keydown', 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);
const exps = document.getElementsByClassName("noVNC_expander");
for (let i = 0;i < exps.length;i++) {
exps[i].addEventListener('click', UI.toggleExpander);
}
},
addTouchSpecificHandlers() {
document.getElementById("noVNC_mouse_button0")
.addEventListener('click', () => UI.setMouseButton(1));
document.getElementById("noVNC_mouse_button1")
.addEventListener('click', () => UI.setMouseButton(2));
document.getElementById("noVNC_mouse_button2")
.addEventListener('click', () => UI.setMouseButton(4));
document.getElementById("noVNC_mouse_button4")
.addEventListener('click', () => UI.setMouseButton(0));
document.getElementById("noVNC_keyboard_button")
.addEventListener('click', UI.toggleVirtualKeyboard);
UI.touchKeyboard = new Keyboard(document.getElementById('noVNC_keyboardinput'));
UI.touchKeyboard.onkeyevent = UI.keyEvent;
UI.touchKeyboard.grab();
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', () => 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);
},
addExtraKeysHandlers() {
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_windows_button")
.addEventListener('click', UI.toggleWindows);
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);
},
addMachineHandlers() {
document.getElementById("noVNC_shutdown_button")
.addEventListener('click', () => UI.rfb.machineShutdown());
document.getElementById("noVNC_reboot_button")
.addEventListener('click', () => UI.rfb.machineReboot());
document.getElementById("noVNC_reset_button")
.addEventListener('click', () => UI.rfb.machineReset());
document.getElementById("noVNC_power_button")
.addEventListener('click', UI.togglePowerPanel);
},
addConnectionControlHandlers() {
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() {
document.getElementById("noVNC_clipboard_button")
.addEventListener('click', UI.toggleClipboardPanel);
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(name, changeFunc) {
const settingElem = document.getElementById("noVNC_setting_" + name);
if (changeFunc === undefined) {
changeFunc = () => UI.saveSetting(name);
}
settingElem.addEventListener('change', changeFunc);
},
addSettingsHandlers() {
document.getElementById("noVNC_settings_button")
.addEventListener('click', UI.toggleSettingsPanel);
document.getElementById("noVNC_setting_enable_perf_stats").addEventListener('click', UI.showStats);
UI.addSettingChangeHandler('encrypt');
UI.addSettingChangeHandler('resize');
UI.addSettingChangeHandler('resize', UI.applyResizeMode);
UI.addSettingChangeHandler('resize', UI.updateViewClip);
UI.addSettingChangeHandler('view_clip');
UI.addSettingChangeHandler('view_clip', UI.updateViewClip);
UI.addSettingChangeHandler('shared');
UI.addSettingChangeHandler('view_only');
UI.addSettingChangeHandler('view_only', UI.updateViewOnly);
UI.addSettingChangeHandler('show_dot');
UI.addSettingChangeHandler('show_dot', UI.updateShowDotCursor);
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');
UI.addSettingChangeHandler('enable_webp');
UI.addSettingChangeHandler('clipboard_seamless');
UI.addSettingChangeHandler('clipboard_up');
UI.addSettingChangeHandler('clipboard_down');
},
addFullscreenHandlers() {
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------*/
// Disable/enable controls depending on connection state
updateVisualState(state) {
document.documentElement.classList.remove("noVNC_connecting");
document.documentElement.classList.remove("noVNC_connected");
document.documentElement.classList.remove("noVNC_disconnecting");
document.documentElement.classList.remove("noVNC_reconnecting");
const transition_elem = document.getElementById("noVNC_transition_text");
if (WebUtil.isInsideKasmVDI())
{
parent.postMessage({ action: 'connection_state', value: state}, '*' );
}
switch (state) {
case 'init':
break;
case 'connecting':
transition_elem.textContent = _("Connecting...");
document.documentElement.classList.add("noVNC_connecting");
break;
case 'connected':
document.documentElement.classList.add("noVNC_connected");
break;
case 'disconnecting':
transition_elem.textContent = _("Disconnecting...");
document.documentElement.classList.add("noVNC_disconnecting");
break;
case 'disconnected':
break;
case 'reconnecting':
transition_elem.textContent = _("Reconnecting...");
document.documentElement.classList.add("noVNC_reconnecting");
break;
default:
Log.Error("Invalid visual state: " + state);
UI.showStatus(_("Internal error"), 'error');
return;
}
if (UI.connected) {
UI.updateViewClip();
UI.disableSetting('encrypt');
UI.disableSetting('shared');
UI.disableSetting('host');
UI.disableSetting('port');
UI.disableSetting('path');
UI.disableSetting('repeaterID');
UI.setMouseButton(1);
// Hide the controlbar after 2 seconds
UI.closeControlbarTimeout = setTimeout(UI.closeControlbar, 2000);
} else {
UI.enableSetting('encrypt');
UI.enableSetting('shared');
UI.enableSetting('host');
UI.enableSetting('port');
UI.enableSetting('path');
UI.enableSetting('repeaterID');
UI.updatePowerButton();
UI.keepControlbar();
}
// State change closes the password dialog
document.getElementById('noVNC_password_dlg')
.classList.remove('noVNC_open');
},
showStats() {
UI.saveSetting('enable_perf_stats');
let enable_stats = UI.getSetting('enable_perf_stats');
if (enable_stats === true && UI.statsInterval == undefined) {
document.getElementById("noVNC_connection_stats").style.visibility = "visible";
UI.statsInterval = setInterval(function() {
if (UI.rfb !== undefined) {
UI.rfb.requestBottleneckStats();
}
} , 5000);
} else {
document.getElementById("noVNC_connection_stats").style.visibility = "hidden";
UI.statsInterval = null;
}
},
showStatus(text, status_type, time) {
const statusElem = document.getElementById('noVNC_status');
if (typeof status_type === 'undefined') {
status_type = 'normal';
}
// Don't overwrite more severe visible statuses and never
// errors. Only shows the first error.
if (statusElem.classList.contains("noVNC_open")) {
if (statusElem.classList.contains("noVNC_status_error")) {
return;
}
if (statusElem.classList.contains("noVNC_status_warn") &&
status_type === 'normal') {
return;
}
}
clearTimeout(UI.statusTimeout);
switch (status_type) {
case 'error':
statusElem.classList.remove("noVNC_status_warn");
statusElem.classList.remove("noVNC_status_normal");
statusElem.classList.add("noVNC_status_error");
break;
case 'warning':
case 'warn':
statusElem.classList.remove("noVNC_status_error");
statusElem.classList.remove("noVNC_status_normal");
statusElem.classList.add("noVNC_status_warn");
break;
case 'normal':
case 'info':
default:
statusElem.classList.remove("noVNC_status_error");
statusElem.classList.remove("noVNC_status_warn");
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() {
clearTimeout(UI.statusTimeout);
document.getElementById('noVNC_status').classList.remove("noVNC_open");
},
activateControlbar(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() {
document.getElementById('noVNC_control_bar_anchor')
.classList.add("noVNC_idle");
},
keepControlbar() {
clearTimeout(UI.closeControlbarTimeout);
},
openControlbar() {
document.getElementById('noVNC_control_bar')
.classList.add("noVNC_open");
},
closeControlbar() {
UI.closeAllPanels();
document.getElementById('noVNC_control_bar')
.classList.remove("noVNC_open");
},
toggleControlbar() {
if (document.getElementById('noVNC_control_bar')
.classList.contains("noVNC_open")) {
UI.closeControlbar();
} else {
UI.openControlbar();
}
},
toggleControlbarSide() {
// Temporarily disable animation, if bar is displayed, to avoid weird
// movement. The transitionend-event will not fire when display=none.
const bar = document.getElementById('noVNC_control_bar');
const barDisplayStyle = window.getComputedStyle(bar).display;
if (barDisplayStyle !== 'none') {
bar.style.transitionDuration = '0s';
bar.addEventListener('transitionend', () => bar.style.transitionDuration = '');
}
const 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;
},
showControlbarHint(show) {
const hint = document.getElementById('noVNC_control_bar_hint');
if (show) {
hint.classList.add("noVNC_active");
} else {
hint.classList.remove("noVNC_active");
}
},
dragControlbarHandle(e) {
if (!UI.controlbarGrabbed) return;
const ptr = getPointerEvent(e);
const 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) {
const dragDistance = Math.abs(ptr.clientY - UI.controlbarMouseDownClientY);
if (dragDistance < dragThreshold) return;
UI.controlbarDrag = true;
}
const 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(viewportRelativeY) {
const handle = document.getElementById("noVNC_control_bar_handle");
const handleHeight = handle.getBoundingClientRect().height;
const controlbarBounds = document.getElementById("noVNC_control_bar")
.getBoundingClientRect();
const margin = 10;
// These heights need to be non-zero for the below logic to work
if (handleHeight === 0 || controlbarBounds.height === 0) {
return;
}
let 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
const parentRelativeY = newY - controlbarBounds.top;
handle.style.transform = "translateY(" + parentRelativeY + "px)";
},
updateControlbarHandle() {
// Since the control bar is fixed on the viewport and not the page,
// the move function expects coordinates relative the the viewport.
const handle = document.getElementById("noVNC_control_bar_handle");
const handleBounds = handle.getBoundingClientRect();
UI.moveControlbarHandle(handleBounds.top);
},
controlbarHandleMouseUp(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;
UI.showControlbarHint(false);
},
controlbarHandleMouseDown(e) {
if ((e.type == "mousedown") && (e.button != 0)) return;
const ptr = getPointerEvent(e);
const handle = document.getElementById("noVNC_control_bar_handle");
const bounds = handle.getBoundingClientRect();
// Touch events have implicit capture
if (e.type === "mousedown") {
setCapture(handle);
}
UI.controlbarGrabbed = true;
UI.controlbarDrag = false;
UI.showControlbarHint(true);
UI.controlbarMouseDownClientY = ptr.clientY;
UI.controlbarMouseDownOffsetY = ptr.clientY - bounds.top;
e.preventDefault();
e.stopPropagation();
UI.keepControlbar();
UI.activateControlbar();
},
toggleExpander(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(name, defVal) {
// Check Query string followed by cookie
let val = WebUtil.getConfigVar(name);
if (val === null) {
val = WebUtil.readSetting(name, defVal);
}
WebUtil.setSetting(name, val);
UI.updateSetting(name);
return val;
},
// Set the new value, update and disable form control setting
forceSetting(name, val) {
WebUtil.setSetting(name, val);
UI.updateSetting(name);
UI.disableSetting(name);
},
// Update cookie and form control setting. If value is not set, then
// updates from control to current cookie setting.
updateSetting(name) {
// Update the settings control
let value = UI.getSetting(name);
const ctrl = document.getElementById('noVNC_setting_' + name);
if (ctrl.type === 'checkbox') {
ctrl.checked = value;
} else if (typeof ctrl.options !== 'undefined') {
for (let 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(name) {
const ctrl = document.getElementById('noVNC_setting_' + name);
let val;
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);
//Log.Debug("Setting saved '" + name + "=" + val + "'");
return val;
},
// Read form control compatible setting from cookie
getSetting(name) {
const ctrl = document.getElementById('noVNC_setting_' + name);
let 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;
},
// These helpers compensate for the lack of parent-selectors and
// previous-sibling-selectors in CSS which are needed when we want to
// disable the labels that belong to disabled input elements.
disableSetting(name) {
const ctrl = document.getElementById('noVNC_setting_' + name);
ctrl.disabled = true;
ctrl.label.classList.add('noVNC_disabled');
},
enableSetting(name) {
const ctrl = document.getElementById('noVNC_setting_' + name);
ctrl.disabled = false;
ctrl.label.classList.remove('noVNC_disabled');
},
/* ------^-------
* /SETTINGS
* ==============
* PANELS
* ------v------*/
closeAllPanels() {
UI.closeSettingsPanel();
UI.closePowerPanel();
UI.closeClipboardPanel();
UI.closeExtraKeys();
},
/* ------^-------
* /PANELS
* ==============
* SETTINGS (panel)
* ------v------*/
openSettingsPanel() {
UI.closeAllPanels();
UI.openControlbar();
// Refresh UI elements from saved cookies
UI.updateSetting('encrypt');
UI.updateSetting('view_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() {
document.getElementById('noVNC_settings')
.classList.remove("noVNC_open");
document.getElementById('noVNC_settings_button')
.classList.remove("noVNC_selected");
},
toggleSettingsPanel() {
if (document.getElementById('noVNC_settings')
.classList.contains("noVNC_open")) {
UI.closeSettingsPanel();
} else {
UI.openSettingsPanel();
}
},
/* ------^-------
* /SETTINGS
* ==============
* POWER
* ------v------*/
openPowerPanel() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_power')
.classList.add("noVNC_open");
document.getElementById('noVNC_power_button')
.classList.add("noVNC_selected");
},
closePowerPanel() {
document.getElementById('noVNC_power')
.classList.remove("noVNC_open");
document.getElementById('noVNC_power_button')
.classList.remove("noVNC_selected");
},
togglePowerPanel() {
if (document.getElementById('noVNC_power')
.classList.contains("noVNC_open")) {
UI.closePowerPanel();
} else {
UI.openPowerPanel();
}
},
// Disable/enable power button
updatePowerButton() {
if (UI.connected &&
UI.rfb.capabilities.power &&
!UI.rfb.viewOnly) {
document.getElementById('noVNC_power_button')
.classList.remove("noVNC_hidden");
} else {
document.getElementById('noVNC_power_button')
.classList.add("noVNC_hidden");
// Close power panel if open
UI.closePowerPanel();
}
},
/* ------^-------
* /POWER
* ==============
* CLIPBOARD
* ------v------*/
openClipboardPanel() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_clipboard')
.classList.add("noVNC_open");
document.getElementById('noVNC_clipboard_button')
.classList.add("noVNC_selected");
},
closeClipboardPanel() {
document.getElementById('noVNC_clipboard')
.classList.remove("noVNC_open");
document.getElementById('noVNC_clipboard_button')
.classList.remove("noVNC_selected");
},
toggleClipboardPanel() {
if (document.getElementById('noVNC_clipboard')
.classList.contains("noVNC_open")) {
UI.closeClipboardPanel();
} else {
UI.openClipboardPanel();
}
},
readClipboard: function readClipboard(callback) {
if (navigator.clipboard && navigator.clipboard.readText) {
navigator.clipboard.readText().then(function (text) {
return callback(text);
}).catch(function () {
return Log.Debug("Failed to read system clipboard");
});
}
},
// Copy text from NoVNC desktop to local computer
clipboardReceive(e) {
if (UI.rfb.clipboardDown && UI.rfb.clipboardSeamless ) {
var curvalue = document.getElementById('noVNC_clipboard_text').value;
if (curvalue != e.detail.text) {
Log.Debug(">> UI.clipboardReceive: " + e.detail.text.substr(0, 40) + "...");
document.getElementById('noVNC_clipboard_text').value = e.detail.text;
Log.Debug("<< UI.clipboardReceive");
if (navigator.clipboard && navigator.clipboard.writeText){
navigator.clipboard.writeText(e.detail.text)
.then(function () {
//UI.popupMessage("Selection Copied");
}, function () {
console.error("Failed to write system clipboard (trying to copy from NoVNC clipboard)")
});
}
}
}
},
//recieved bottleneck stats
bottleneckStatsRecieve(e) {
var obj = JSON.parse(e.detail.text);
document.getElementById("noVNC_connection_stats").innerHTML = "CPU: " + obj[0] + "/" + obj[1] + " | Network: " + obj[2] + "/" + obj[3];
console.log(e.detail.text);
},
popupMessage: function(msg, secs) {
if (!secs){
secs = 500;
}
// Quick popup to give feedback that selection was copied
setTimeout(UI.showOverlay.bind(this, msg, secs), 200);
},
// Enter and focus events come when we return to NoVNC.
// In both cases, check the local clipboard to see if it changed.
focusVNC: function() {
UI.copyFromLocalClipboard();
},
enterVNC: function() {
UI.copyFromLocalClipboard();
},
copyFromLocalClipboard: function copyFromLocalClipboard() {
if (UI.rfb && UI.rfb.clipboardUp && UI.rfb.clipboardSeamless) {
UI.readClipboard(function (text) {
var maximumBufferSize = 10000;
var clipVal = document.getElementById('noVNC_clipboard_text').value;
if (clipVal != text) {
document.getElementById('noVNC_clipboard_text').value = text; // The websocket has a maximum buffer array size
if (text.length > maximumBufferSize) {
UI.popupMessage("Clipboard contents too large. Data truncated", 2000);
UI.rfb.clipboardPasteFrom(text.slice(0, maximumBufferSize));
} else {
//UI.popupMessage("Copied from Local Clipboard");
UI.rfb.clipboardPasteFrom(text);
}
} // Reset flag to prevent checking too often
UI.needToCheckClipboardChange = false;
});
}
},
// These 3 events indicate the focus has gone outside the NoVNC.
// When outside the NoVNC, the system clipboard could change.
leaveVNC: function() {
UI.needToCheckClipboardChange = true;
},
blurVNC: function() {
UI.needToCheckClipboardChange = true;
},
focusoutVNC: function() {
UI.needToCheckClipboardChange = true;
},
// On these 2 events, check if we need to look at clipboard.
mouseMoveVNC: function() {
if ( UI.needToCheckClipboardChange ) {
UI.copyFromLocalClipboard();
}
},
mouseDownVNC: function() {
if ( UI.needToCheckClipboardChange ) {
UI.copyFromLocalClipboard();
}
},
clipboardClear() {
document.getElementById('noVNC_clipboard_text').value = "";
UI.rfb.clipboardPasteFrom("");
},
clipboardSend() {
const text = document.getElementById('noVNC_clipboard_text').value;
Log.Debug(">> UI.clipboardSend: " + text.substr(0, 40) + "...");
UI.rfb.clipboardPasteFrom(text);
Log.Debug("<< UI.clipboardSend");
},
/**
* Show the terminal overlay for a given amount of time.
*
* The terminal overlay appears in inverse video in a large font, centered
* over the terminal. You should probably keep the overlay message brief,
* since it's in a large font and you probably aren't going to check the size
* of the terminal first.
*
* @param {string} msg The text (not HTML) message to display in the overlay.
* @param {number} opt_timeout The amount of time to wait before fading out
* the overlay. Defaults to 1.5 seconds. Pass null to have the overlay
* stay up forever (or until the next overlay).
*/
showOverlay: function(msg, opt_timeout) {
if (!UI.overlayNode) {
UI.overlayNode = document.createElement('div');
UI.overlayNode.style.cssText = (
'border-radius: 15px;' +
'font-size: xx-large;' +
'opacity: 0.90;' +
'padding: 0.2em 0.5em 0.2em 0.5em;' +
'position: absolute;' +
'-webkit-user-select: none;' +
'-webkit-transition: opacity 180ms ease-in;' +
'-moz-user-select: none;' +
'-moz-transition: opacity 180ms ease-in;');
UI.overlayNode.style.color = 'rgb(16,16,16)';
UI.overlayNode.style.backgroundColor = 'rgb(240,240,240)';
UI.overlayNode.style.fontFamily = '"DejaVu Sans Mono", "Noto Sans Mono", "Everson Mono", FreeMono, Menlo, Terminal, monospace"';
UI.overlayNode.style.opacity = '0.90';
//UI.overlayNode.addEventListener('mousedown', function(e) {
// e.preventDefault();
// e.stopPropagation();
// }, true);
}
UI.overlayNode.textContent = msg;
if (!UI.overlayNode.parentNode_) {
UI.overlayNode.parentNode_ = document.getElementById('noVNC_container');
}
UI.overlayNode.parentNode_.appendChild(UI.overlayNode);
var divWidth = UI.overlayNode.parentNode_.offsetWidth;
var divHeight = UI.overlayNode.parentNode_.offsetHeight;
var overlayWidth = UI.overlayNode.offsetWidth;
var overlayHeight = UI.overlayNode.offsetHeight;
UI.overlayNode.style.top =
(divHeight - overlayHeight) / 2 + 'px';
UI.overlayNode.style.left =
(divWidth - overlayWidth) / 2 + 'px';
if (UI.overlayTimeout)
clearTimeout(UI.overlayTimeout);
if (opt_timeout === null)
opt_timeout = 500;
UI.overlayTimeout = setTimeout(function () {
UI.overlayNode.style.opacity = '0';
UI.overlayTimeout = setTimeout(function () {
return UI.hideOverlay();
}, 200);
}, opt_timeout || 1500);
},
/**
* Hide the terminal overlay immediately.
*
* Useful when we show an overlay for an event with an unknown end time.
*/
hideOverlay: function() {
if (UI.overlayTimeout)
clearTimeout(UI.overlayTimeout);
UI.overlayTimeout = null;
if (UI.overlayNode.parentNode_)
UI.overlayNode.parentNode_.removeChild(UI.overlayNode);
UI.overlayNode.style.opacity = '0.90';
},
/* ------^-------
* /CLIPBOARD
* ==============
* CONNECTION
* ------v------*/
openConnectPanel() {
document.getElementById('noVNC_connect_dlg')
.classList.add("noVNC_open");
},
closeConnectPanel() {
document.getElementById('noVNC_connect_dlg')
.classList.remove("noVNC_open");
},
connect(event, password) {
// Ignore when rfb already exists
if (typeof UI.rfb !== 'undefined') {
return;
}
const host = UI.getSetting('host');
const port = UI.getSetting('port');
const path = UI.getSetting('path');
if (typeof password === 'undefined') {
password = WebUtil.getConfigVar('password');
UI.reconnect_password = password;
}
if (password === null) {
password = undefined;
}
UI.hideStatus();
if (!host) {
Log.Error("Can't connect when host is: " + host);
UI.showStatus(_("Must set host"), 'error');
return;
}
UI.closeAllPanels();
UI.closeConnectPanel();
UI.updateVisualState('connecting');
let url;
url = UI.getSetting('encrypt') ? 'wss' : 'ws';
url += '://' + host;
if (port) {
url += ':' + port;
}
url += '/' + path;
UI.rfb = new RFB(document.getElementById('noVNC_container'), url,
{ shared: UI.getSetting('shared'),
repeaterID: UI.getSetting('repeaterID'),
credentials: { password: password } });
UI.rfb.addEventListener("connect", UI.connectFinished);
UI.rfb.addEventListener("disconnect", UI.disconnectFinished);
UI.rfb.addEventListener("credentialsrequired", UI.credentials);
UI.rfb.addEventListener("securityfailure", UI.securityFailed);
UI.rfb.addEventListener("capabilities", UI.updatePowerButton);
UI.rfb.addEventListener("clipboard", UI.clipboardReceive);
UI.rfb.addEventListener("bottleneck_stats", UI.bottleneckStatsRecieve);
document.addEventListener('mouseenter', UI.enterVNC);
document.addEventListener('mouseleave', UI.leaveVNC);
document.addEventListener('blur', UI.blurVNC);
document.addEventListener('focus', UI.focusVNC);
document.addEventListener('focusout', UI.focusoutVNC);
document.addEventListener('mousemove', UI.mouseMoveVNC);
document.addEventListener('mousedown', UI.mouseDownVNC);
UI.rfb.addEventListener("bell", UI.bell);
UI.rfb.addEventListener("desktopname", UI.updateDesktopName);
UI.rfb.clipViewport = UI.getSetting('view_clip');
UI.rfb.scaleViewport = UI.getSetting('resize') === 'scale';
UI.rfb.resizeSession = UI.getSetting('resize') === 'remote';
UI.rfb.showDotCursor = UI.getSetting('show_dot');
UI.rfb.idleDisconnect = UI.getSetting('idle_disconnect');
UI.rfb.videoQuality = UI.getSetting('video_quality');
UI.rfb.clipboardUp = UI.getSetting('clipboard_up');
UI.rfb.clipboardDown = UI.getSetting('clipboard_down');
UI.rfb.clipboardSeamless = UI.getSetting('clipboard_seamless');
// KASM-960 workaround, disable seamless on Safari
if (/^((?!chrome|android).)*safari/i.test(navigator.userAgent))
{
UI.rfb.clipboardSeamless = false;
}
UI.rfb.preferLocalCursor = UI.getSetting('prefer_local_cursor');
UI.rfb.enableWebP = UI.getSetting('enable_webp');
UI.updateViewOnly(); // requires UI.rfb
/****
* Kasm VDI specific
*****/
if (WebUtil.isInsideKasmVDI())
{
if (window.addEventListener) { // Mozilla, Netscape, Firefox
//window.addEventListener('load', WindowLoad, false);
window.addEventListener('message', UI.receiveMessage, false);
} else if (window.attachEvent) { //IE
window.attachEvent('onload', WindowLoad);
window.attachEvent('message', UI.receiveMessage);
}
if (UI.rfb.clipboardDown){
UI.rfb.addEventListener("clipboard", UI.clipboardRx);
}
UI.rfb.addEventListener("disconnect", UI.disconnectedRx);
document.getElementById('noVNC_control_bar_anchor').setAttribute('style', 'display: none');
document.getElementById('noVNC_connect_dlg').innerHTML = '';
//keep alive for websocket connection to stay open, since we may not control reverse proxies
//send a keep alive within a window that we control
setInterval(function() {
if (currentEventCount!=UI.rfb.sentEventsCounter) {
idleCounter=0;
currentEventCount=UI.rfb.sentEventsCounter;
} else {
idleCounter+=1;
var idleDisconnect = parseFloat(UI.rfb.idleDisconnect);
if ((idleCounter / 2) >= idleDisconnect) {
//idle for longer than the limit, disconnect
currentEventCount = -1;
idleCounter = 0;
parent.postMessage({ action: 'idle_session_timeout', value: 'Idle session timeout exceeded'}, '*' );
//UI.rfb.disconnect();
} else {
//send a keep alive
UI.rfb.sendKey(1, null, false);
currentEventCount=UI.rfb.sentEventsCounter;
}
}
}, 30000);
}
// Send an event to the parent document (kasm app) to toggle the control panel when ctl is double clicked
if (UI.getSetting('toggle_control_panel', false)) {
document.addEventListener('keyup', function (event) {
// CTRL and the various implementations of the mac command key
if ([17, 224, 91, 93].indexOf(event.keyCode) > -1) {
var thisKeypressTime = new Date();
if (thisKeypressTime - lastKeypressTime <= delta) {
UI.toggleNav();
thisKeypressTime = 0;
}
lastKeypressTime = thisKeypressTime;
}
}, true);
}
},
disconnect() {
UI.closeAllPanels();
UI.rfb.disconnect();
UI.connected = false;
// Disable automatic reconnecting
UI.inhibit_reconnect = true;
UI.updateVisualState('disconnecting');
// Don't display the connection settings until we're actually disconnected
},
reconnect() {
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);
},
cancelReconnect() {
if (UI.reconnect_callback !== null) {
clearTimeout(UI.reconnect_callback);
UI.reconnect_callback = null;
}
UI.updateVisualState('disconnected');
UI.openControlbar();
UI.openConnectPanel();
},
connectFinished(e) {
UI.connected = true;
UI.inhibit_reconnect = false;
let msg;
if (UI.getSetting('encrypt')) {
msg = _("Connected (encrypted) to ") + UI.desktopName;
} else {
msg = _("Connected (unencrypted) to ") + UI.desktopName;
}
UI.showStatus(msg);
UI.showStats();
UI.updateVisualState('connected');
// Do this last because it can only be used on rendered elements
UI.rfb.focus();
},
disconnectFinished(e) {
const wasConnected = UI.connected;
// This variable is ideally set when disconnection starts, but
// when the disconnection isn't clean or if it is initiated by
// the server, we need to do it here as well since
// UI.disconnect() won't be used in those cases.
UI.connected = false;
UI.rfb = undefined;
if (!e.detail.clean) {
UI.updateVisualState('disconnected');
if (wasConnected) {
UI.showStatus(_("Something went wrong, connection is closed"),
'error');
} else {
UI.showStatus(_("Failed to connect to server"), 'error');
}
} else if (UI.getSetting('reconnect', false) === true && !UI.inhibit_reconnect) {
UI.updateVisualState('reconnecting');
const delay = parseInt(UI.getSetting('reconnect_delay'));
UI.reconnect_callback = setTimeout(UI.reconnect, delay);
return;
} else {
UI.updateVisualState('disconnected');
UI.showStatus(_("Disconnected"), 'normal');
}
UI.openControlbar();
UI.openConnectPanel();
},
securityFailed(e) {
let msg = "";
// On security failures we might get a string with a reason
// directly from the server. Note that we can't control if
// this string is translated or not.
if ('reason' in e.detail) {
msg = _("New connection has been rejected with reason: ") +
e.detail.reason;
} else {
msg = _("New connection has been rejected");
}
UI.showStatus(msg, 'error');
},
/*
Menu.js Additions
*/
receiveMessage(event) {
//TODO: UNCOMMENT FOR PRODUCTION
//if (event.origin !== "https://kasmweb.com")
// return;
if (event.data && event.data.action) {
switch (event.data.action) {
case 'clipboardsnd':
if (UI.rfb.clipboardUp) {
UI.rfb.clipboardPasteFrom(event.data.value);
}
break;
case 'setvideoquality':
UI.rfb.videoQuality = event.data.value;
break;
}
}
},
disconnectedRx(event) {
parent.postMessage({ action: 'disconnectrx', value: event.detail.reason}, '*' );
},
toggleNav(){
parent.postMessage({ action: 'togglenav', value: null}, '*' );
},
clipboardRx(event) {
parent.postMessage({ action: 'clipboardrx', value: event.detail.text}, '*' ); //TODO fix star
},
/* ------^-------
* /CONNECTION
* ==============
* PASSWORD
* ------v------*/
credentials(e) {
// FIXME: handle more types
document.getElementById('noVNC_password_dlg')
.classList.add('noVNC_open');
setTimeout(() => document
.getElementById('noVNC_password_input').focus(), 100);
Log.Warn("Server asked for a password");
UI.showStatus(_("Password is required"), "warning");
},
setPassword(e) {
// Prevent actually submitting the form
e.preventDefault();
const inputElem = document.getElementById('noVNC_password_input');
const password = inputElem.value;
// Clear the input after reading the password
inputElem.value = "";
UI.rfb.sendCredentials({ password: password });
UI.reconnect_password = password;
document.getElementById('noVNC_password_dlg')
.classList.remove('noVNC_open');
},
/* ------^-------
* /PASSWORD
* ==============
* FULLSCREEN
* ------v------*/
toggleFullscreen() {
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.updateFullscreenButton();
},
updateFullscreenButton() {
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() {
if (!UI.rfb) return;
UI.rfb.scaleViewport = UI.getSetting('resize') === 'scale';
UI.rfb.resizeSession = UI.getSetting('resize') === 'remote';
UI.rfb.idleDisconnect = UI.getSetting('idle_disconnect');
UI.rfb.videoQuality = UI.getSetting('video_quality');
UI.rfb.enableWebP = UI.getSetting('enable_webp');
},
/* ------^-------
* /RESIZE
* ==============
* VIEW CLIPPING
* ------v------*/
// Update viewport clipping property for the connection. The normal
// case is to get the value from the setting. There are special cases
// for when the viewport is scaled or when a touch device is used.
updateViewClip() {
if (!UI.rfb) return;
const scaling = UI.getSetting('resize') === 'scale';
if (scaling) {
// Can't be clipping if viewport is scaled to fit
UI.forceSetting('view_clip', false);
UI.rfb.clipViewport = false;
} else if (isIOS() || isAndroid()) {
// iOS and Android usually have shit scrollbars
UI.forceSetting('view_clip', true);
UI.rfb.clipViewport = true;
} else {
UI.enableSetting('view_clip');
UI.rfb.clipViewport = UI.getSetting('view_clip');
}
// Changing the viewport may change the state of
// the dragging button
UI.updateViewDrag();
},
/* ------^-------
* /VIEW CLIPPING
* ==============
* VIEWDRAG
* ------v------*/
toggleViewDrag() {
if (!UI.rfb) return;
UI.rfb.dragViewport = !UI.rfb.dragViewport;
UI.updateViewDrag();
},
updateViewDrag() {
if (!UI.connected) return;
const viewDragButton = document.getElementById('noVNC_view_drag_button');
if (!UI.rfb.clipViewport && UI.rfb.dragViewport) {
// We are no longer clipping the viewport. Make sure
// viewport drag isn't active when it can't be used.
UI.rfb.dragViewport = false;
}
if (UI.rfb.dragViewport) {
viewDragButton.classList.add("noVNC_selected");
} else {
viewDragButton.classList.remove("noVNC_selected");
}
if (UI.rfb.clipViewport) {
viewDragButton.classList.remove("noVNC_hidden");
} else {
viewDragButton.classList.add("noVNC_hidden");
}
},
/* ------^-------
* /VIEWDRAG
* ==============
* KEYBOARD
* ------v------*/
showVirtualKeyboard() {
if (!isTouchDevice) return;
const input = document.getElementById('noVNC_keyboardinput');
if (document.activeElement == input) return;
input.focus();
try {
const l = input.value.length;
// Move the caret to the end
input.setSelectionRange(l, l);
} catch (err) {
// setSelectionRange is undefined in Google Chrome
}
},
hideVirtualKeyboard() {
if (!isTouchDevice) return;
const input = document.getElementById('noVNC_keyboardinput');
if (document.activeElement != input) return;
input.blur();
},
toggleVirtualKeyboard() {
if (document.getElementById('noVNC_keyboard_button')
.classList.contains("noVNC_selected")) {
UI.hideVirtualKeyboard();
} else {
UI.showVirtualKeyboard();
}
},
onfocusVirtualKeyboard(event) {
document.getElementById('noVNC_keyboard_button')
.classList.add("noVNC_selected");
if (UI.rfb) {
UI.rfb.focusOnClick = false;
}
},
onblurVirtualKeyboard(event) {
document.getElementById('noVNC_keyboard_button')
.classList.remove("noVNC_selected");
if (UI.rfb) {
UI.rfb.focusOnClick = true;
}
},
keepVirtualKeyboard(event) {
const input = document.getElementById('noVNC_keyboardinput');
if ( UI.needToCheckClipboardChange ) {
UI.copyFromLocalClipboard();
}
// 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() {
const kbi = document.getElementById('noVNC_keyboardinput');
kbi.value = new Array(UI.defaultKeyboardinputLen).join("_");
UI.lastKeyboardinput = kbi.value;
},
keyEvent(keysym, code, down) {
if (!UI.rfb) return;
UI.rfb.sendKey(keysym, code, down);
},
// 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(event) {
if (!UI.rfb) return;
const newValue = event.target.value;
if (!UI.lastKeyboardinput) {
UI.keyboardinputReset();
}
const oldValue = UI.lastKeyboardinput;
let 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;
}
const oldLen = oldValue.length;
let inputs = newLen - oldLen;
let backspaces = inputs < 0 ? -inputs : 0;
// Compare the old string with the new to account for
// text-corrections or other input that modify existing text
for (let 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 (let i = 0; i < backspaces; i++) {
UI.rfb.sendKey(KeyTable.XK_BackSpace, "Backspace");
}
for (let i = newLen - inputs; i < newLen; i++) {
UI.rfb.sendKey(keysyms.lookup(newValue.charCodeAt(i)));
}
// 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() {
UI.closeAllPanels();
UI.openControlbar();
document.getElementById('noVNC_modifiers')
.classList.add("noVNC_open");
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.add("noVNC_selected");
},
closeExtraKeys() {
document.getElementById('noVNC_modifiers')
.classList.remove("noVNC_open");
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.remove("noVNC_selected");
},
toggleExtraKeys() {
if (document.getElementById('noVNC_modifiers')
.classList.contains("noVNC_open")) {
UI.closeExtraKeys();
} else {
UI.openExtraKeys();
}
},
sendEsc() {
UI.sendKey(KeyTable.XK_Escape, "Escape");
},
sendTab() {
UI.sendKey(KeyTable.XK_Tab, "Tab");
},
toggleCtrl() {
const btn = document.getElementById('noVNC_toggle_ctrl_button');
if (btn.classList.contains("noVNC_selected")) {
UI.sendKey(KeyTable.XK_Control_L, "ControlLeft", false);
btn.classList.remove("noVNC_selected");
} else {
UI.sendKey(KeyTable.XK_Control_L, "ControlLeft", true);
btn.classList.add("noVNC_selected");
}
},
toggleWindows() {
const btn = document.getElementById('noVNC_toggle_windows_button');
if (btn.classList.contains("noVNC_selected")) {
UI.sendKey(KeyTable.XK_Super_L, "MetaLeft", false);
btn.classList.remove("noVNC_selected");
} else {
UI.sendKey(KeyTable.XK_Super_L, "MetaLeft", true);
btn.classList.add("noVNC_selected");
}
},
toggleAlt() {
const btn = document.getElementById('noVNC_toggle_alt_button');
if (btn.classList.contains("noVNC_selected")) {
UI.sendKey(KeyTable.XK_Alt_L, "AltLeft", false);
btn.classList.remove("noVNC_selected");
} else {
UI.sendKey(KeyTable.XK_Alt_L, "AltLeft", true);
btn.classList.add("noVNC_selected");
}
},
sendCtrlAltDel() {
UI.rfb.sendCtrlAltDel();
// See below
UI.rfb.focus();
UI.idleControlbar();
},
sendKey(keysym, code, down) {
UI.rfb.sendKey(keysym, code, down);
// Move focus to the screen in order to be able to use the
// keyboard right after these extra keys.
// The exception is when a virtual keyboard is used, because
// if we focus the screen the virtual keyboard would be closed.
// In this case we focus our special virtual keyboard input
// element instead.
if (document.getElementById('noVNC_keyboard_button')
.classList.contains("noVNC_selected")) {
document.getElementById('noVNC_keyboardinput').focus();
} else {
UI.rfb.focus();
}
// fade out the controlbar to highlight that
// the focus has been moved to the screen
UI.idleControlbar();
},
/* ------^-------
* /EXTRA KEYS
* ==============
* MISC
* ------v------*/
setMouseButton(num) {
const view_only = UI.rfb.viewOnly;
if (UI.rfb && !view_only) {
UI.rfb.touchButton = num;
}
const blist = [0, 1, 2, 4];
for (let b = 0; b < blist.length; b++) {
const 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");
}
}
},
updateViewOnly() {
if (!UI.rfb) return;
UI.rfb.viewOnly = UI.getSetting('view_only');
// Hide input related buttons in view only mode
if (UI.rfb.viewOnly) {
document.getElementById('noVNC_keyboard_button')
.classList.add('noVNC_hidden');
document.getElementById('noVNC_toggle_extra_keys_button')
.classList.add('noVNC_hidden');
document.getElementById('noVNC_mouse_button' + UI.rfb.touchButton)
.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');
document.getElementById('noVNC_mouse_button' + UI.rfb.touchButton)
.classList.remove('noVNC_hidden');
}
},
updateShowDotCursor() {
if (!UI.rfb) return;
UI.rfb.showDotCursor = UI.getSetting('show_dot');
},
updateLogging() {
WebUtil.init_logging(UI.getSetting('logging'));
},
updateDesktopName(e) {
UI.desktopName = e.detail.name;
// Display the desktop name in the document title
document.title = e.detail.name + " - noVNC";
},
bell(e) {
if (WebUtil.getConfigVar('bell', 'on') === 'on') {
const promise = document.getElementById('noVNC_bell').play();
// The standards disagree on the return value here
if (promise) {
promise.catch((e) => {
if (e.name === "NotAllowedError") {
// Ignore when the browser doesn't let us play audio.
// It is common that the browsers require audio to be
// initiated from a user action.
} else {
Log.Error("Unable to play bell: " + e);
}
});
}
}
},
//Helper to add options to dropdown.
addOption(selectbox, text, value) {
const optn = document.createElement("OPTION");
optn.text = text;
optn.value = value;
selectbox.options.add(optn);
},
/* ------^-------
* /MISC
* ==============
*/
};
// Set up translations
const LINGUAS = ["cs", "de", "el", "es", "ko", "nl", "pl", "ru", "sv", "tr", "zh_CN", "zh_TW"];
l10n.setup(LINGUAS);
if (l10n.language !== "en" && l10n.dictionary === undefined) {
WebUtil.fetchJSON('app/locale/' + l10n.language + '.json', (translations) => {
l10n.dictionary = translations;
// wait for translations to load before loading the UI
UI.prime();
}, (err) => {
Log.Error("Failed to load translations: " + err);
UI.prime();
});
} else {
UI.prime();
}
export default UI;