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ui.js
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/*
* 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 */
import * as Log from '../core/util/logging.js';
import _, { l10n } from '../core/util/localization.js';
import { isTouchDevice, browserSupportsCursorURIs as cursorURIsSupported } from '../core/util/browsers.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 Display from "../core/display.js";
import * as WebUtil from "./webutil.js";
var UI = {
connected: false,
desktopName: "",
resizeTimeout: null,
statusTimeout: null,
hideKeyboardTimeout: null,
idleControlbarTimeout: null,
closeControlbarTimeout: null,
controlbarGrabbed: false,
controlbarDrag: false,
controlbarMouseDownClientY: 0,
controlbarMouseDownOffsetY: 0,
isSafari: false,
lastKeyboardinput: null,
defaultKeyboardinputLen: 100,
inhibit_reconnect: true,
reconnect_callback: null,
reconnect_password: null,
prime: function(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: 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
l10n.translateDOM();
// Adapt the interface for touch screen devices
if (isTouchDevice) {
document.documentElement.classList.add("noVNC_touch");
// Remove the address bar
setTimeout(function() { window.scrollTo(0, 1); }, 100);
}
// 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);
// Bootstrap fallback input handler
UI.keyboardinputReset();
UI.openControlbar();
UI.updateViewClip();
UI.updateVisualState();
document.documentElement.classList.remove("noVNC_loading");
var 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: 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('cursor', !isTouchDevice);
UI.initSetting('view_clip', false);
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);
UI.setupSettingLabels();
},
// Adds a link to the label elements on the corresponding input elements
setupSettingLabels: function() {
var labels = document.getElementsByTagName('LABEL');
for (var i = 0; i < labels.length; i++) {
var htmlFor = labels[i].htmlFor;
if (htmlFor != '') {
var elem = document.getElementById(htmlFor);
if (elem) elem.label = labels[i];
} else {
// If 'for' isn't set, use the first input element child
var children = labels[i].children;
for (var j = 0; j < children.length; j++) {
if (children[j].form !== undefined) {
children[j].label = labels[i];
break;
}
}
}
}
},
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;
Log.Error(msg);
UI.showStatus(msg, 'error');
return false;
}
},
/* ------^-------
* /INIT
* ==============
* EVENT HANDLERS
* ------v------*/
addResizeHandlers: function() {
window.addEventListener('resize', UI.applyResizeMode);
window.addEventListener('resize', UI.updateViewClip);
},
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('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);
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);
UI.touchKeyboard = new Keyboard({target: document.getElementById('noVNC_keyboardinput'),
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', function () { return false; });
document.documentElement
.addEventListener('mousedown', UI.keepVirtualKeyboard, true);
document.documentElement
.addEventListener('touchstart', 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: 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('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('cursor');
UI.addSettingChangeHandler('cursor', UI.updateLocalCursor);
UI.addSettingChangeHandler('resize');
UI.addSettingChangeHandler('resize', UI.enableDisableViewClip);
UI.addSettingChangeHandler('resize', UI.applyResizeMode);
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('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);
document.getElementById('noVNC_canvas').focus();
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";
Log.Error(msg);
UI.showStatus(msg, 'error');
break;
}
UI.updateVisualState();
},
// Disable/enable controls depending on connection state
updateVisualState: function() {
//Log.Debug(">> updateVisualState");
UI.enableDisableViewClip();
if (cursorURIsSupported() && !isTouchDevice) {
UI.enableSetting('cursor');
} else {
UI.disableSetting('cursor');
}
if (UI.connected) {
UI.disableSetting('encrypt');
UI.disableSetting('shared');
UI.disableSetting('host');
UI.disableSetting('port');
UI.disableSetting('path');
UI.disableSetting('repeaterID');
UI.updateViewClip();
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.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');
//Log.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");
statusElem.classList.remove("noVNC_status_warn");
statusElem.classList.remove("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;
},
showControlbarHint: function (show) {
var hint = document.getElementById('noVNC_control_bar_hint');
if (show) {
hint.classList.add("noVNC_active");
} else {
hint.classList.remove("noVNC_active");
}
},
dragControlbarHandle: function (e) {
if (!UI.controlbarGrabbed) return;
var ptr = 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;
UI.showControlbarHint(false);
},
controlbarHandleMouseDown: function(e) {
if ((e.type == "mousedown") && (e.button != 0)) return;
var ptr = getPointerEvent(e);
var handle = document.getElementById("noVNC_control_bar_handle");
var 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: 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);
//Log.Debug("Setting saved '" + 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;
},
// 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: function(name) {
var ctrl = document.getElementById('noVNC_setting_' + name);
ctrl.disabled = true;
ctrl.label.classList.add('noVNC_disabled');
},
enableSetting: function(name) {
var ctrl = document.getElementById('noVNC_setting_' + name);
ctrl.disabled = false;
ctrl.label.classList.remove('noVNC_disabled');
},
/* ------^-------
* /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');
if (cursorURIsSupported()) {
UI.updateSetting('cursor');
} else {
UI.updateSetting('cursor', !isTouchDevice);
UI.disableSetting('cursor');
}
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: 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();
}