mirror of
https://github.com/novnc/noVNC.git
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d58f8b5144
Clarify in LICENSE.txt that the noVNC core library is the part that is LGPLv3 licensed. The HTML, CSS, images and fonts are separate from the core library and can be modified and distributed with the noVNC core but under their own license conditions. HTML and CSS: 2-Clause BSD Fonts: SIL OFL 1.1 Images: CC BY SA 3.0 In other words, you can modify the layout and appearance of of noVNC to integrate with an existing or new web site or application without having to publish the source for those modifications under the LGPLv3. However, use of and modification of the noVNC core library (i.e. the core Javascript that makes up noVNC) must still be according to the LGPLv3. Chris Gordon was the other contributor to the HTML, CSS, and images included with noVNC and gave permission for this license clarification on June 23, 2012.
660 lines
19 KiB
JavaScript
660 lines
19 KiB
JavaScript
/*
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* noVNC: HTML5 VNC client
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* Copyright (C) 2012 Joel Martin
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* Licensed under LGPL-3 (see LICENSE.txt)
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*
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* See README.md for usage and integration instructions.
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*/
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"use strict";
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/*jslint white: false, browser: true */
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/*global window, $D, Util, WebUtil, RFB, Display */
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var UI = {
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rfb_state : 'loaded',
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settingsOpen : false,
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connSettingsOpen : false,
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clipboardOpen: false,
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keyboardVisible: false,
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// Render default UI and initialize settings menu
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load: function() {
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var html = '', i, sheet, sheets, llevels;
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// Stylesheet selection dropdown
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sheet = WebUtil.selectStylesheet();
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sheets = WebUtil.getStylesheets();
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for (i = 0; i < sheets.length; i += 1) {
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UI.addOption($D('noVNC_stylesheet'),sheets[i].title, sheets[i].title);
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}
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// Logging selection dropdown
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llevels = ['error', 'warn', 'info', 'debug'];
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for (i = 0; i < llevels.length; i += 1) {
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UI.addOption($D('noVNC_logging'),llevels[i], llevels[i]);
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}
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// Settings with immediate effects
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UI.initSetting('logging', 'warn');
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WebUtil.init_logging(UI.getSetting('logging'));
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UI.initSetting('stylesheet', 'default');
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WebUtil.selectStylesheet(null);
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// call twice to get around webkit bug
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WebUtil.selectStylesheet(UI.getSetting('stylesheet'));
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/* Populate the controls if defaults are provided in the URL */
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UI.initSetting('host', window.location.hostname);
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UI.initSetting('port', window.location.port);
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UI.initSetting('password', '');
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UI.initSetting('encrypt', (window.location.protocol === "https:"));
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UI.initSetting('true_color', true);
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UI.initSetting('cursor', false);
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UI.initSetting('shared', true);
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UI.initSetting('view_only', false);
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UI.initSetting('connectTimeout', 2);
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UI.initSetting('path', 'websockify');
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UI.initSetting('repeaterID', '');
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UI.rfb = RFB({'target': $D('noVNC_canvas'),
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'onUpdateState': UI.updateState,
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'onClipboard': UI.clipReceive});
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UI.updateVisualState();
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// Unfocus clipboard when over the VNC area
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//$D('VNC_screen').onmousemove = function () {
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// var keyboard = UI.rfb.get_keyboard();
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// if ((! keyboard) || (! keyboard.get_focused())) {
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// $D('VNC_clipboard_text').blur();
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// }
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// };
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// Show mouse selector buttons on touch screen devices
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if ('ontouchstart' in document.documentElement) {
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// Show mobile buttons
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$D('noVNC_mobile_buttons').style.display = "inline";
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UI.setMouseButton();
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// Remove the address bar
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setTimeout(function() { window.scrollTo(0, 1); }, 100);
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UI.forceSetting('clip', true);
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$D('noVNC_clip').disabled = true;
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} else {
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UI.initSetting('clip', false);
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}
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//iOS Safari does not support CSS position:fixed.
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//This detects iOS devices and enables javascript workaround.
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if ((navigator.userAgent.match(/iPhone/i)) ||
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(navigator.userAgent.match(/iPod/i)) ||
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(navigator.userAgent.match(/iPad/i))) {
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//UI.setOnscroll();
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//UI.setResize();
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}
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$D('noVNC_host').focus();
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UI.setViewClip();
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Util.addEvent(window, 'resize', UI.setViewClip);
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Util.addEvent(window, 'beforeunload', function () {
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if (UI.rfb_state === 'normal') {
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return "You are currently connected.";
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}
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} );
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// Show description by default when hosted at for kanaka.github.com
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if (location.host === "kanaka.github.com") {
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// Open the description dialog
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$D('noVNC_description').style.display = "block";
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} else {
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// Open the connect panel on first load
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UI.toggleConnectPanel();
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}
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},
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// Read form control compatible setting from cookie
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getSetting: function(name) {
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var val, ctrl = $D('noVNC_' + name);
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val = WebUtil.readCookie(name);
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if (ctrl.type === 'checkbox') {
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if (val.toLowerCase() in {'0':1, 'no':1, 'false':1}) {
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val = false;
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} else {
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val = true;
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}
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}
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return val;
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},
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// Update cookie and form control setting. If value is not set, then
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// updates from control to current cookie setting.
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updateSetting: function(name, value) {
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var i, ctrl = $D('noVNC_' + name);
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// Save the cookie for this session
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if (typeof value !== 'undefined') {
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WebUtil.createCookie(name, value);
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}
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// Update the settings control
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value = UI.getSetting(name);
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if (ctrl.type === 'checkbox') {
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ctrl.checked = value;
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} else if (typeof ctrl.options !== 'undefined') {
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for (i = 0; i < ctrl.options.length; i += 1) {
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if (ctrl.options[i].value === value) {
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ctrl.selectedIndex = i;
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break;
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}
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}
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} else {
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/*Weird IE9 error leads to 'null' appearring
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in textboxes instead of ''.*/
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if (value === null) {
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value = "";
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}
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ctrl.value = value;
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}
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},
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// Save control setting to cookie
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saveSetting: function(name) {
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var val, ctrl = $D('noVNC_' + name);
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if (ctrl.type === 'checkbox') {
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val = ctrl.checked;
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} else if (typeof ctrl.options !== 'undefined') {
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val = ctrl.options[ctrl.selectedIndex].value;
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} else {
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val = ctrl.value;
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}
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WebUtil.createCookie(name, val);
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//Util.Debug("Setting saved '" + name + "=" + val + "'");
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return val;
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},
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// Initial page load read/initialization of settings
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initSetting: function(name, defVal) {
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var val;
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// Check Query string followed by cookie
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val = WebUtil.getQueryVar(name);
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if (val === null) {
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val = WebUtil.readCookie(name, defVal);
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}
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UI.updateSetting(name, val);
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//Util.Debug("Setting '" + name + "' initialized to '" + val + "'");
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return val;
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},
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// Force a setting to be a certain value
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forceSetting: function(name, val) {
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UI.updateSetting(name, val);
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return val;
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},
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// Show the clipboard panel
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toggleClipboardPanel: function() {
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// Close the description panel
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$D('noVNC_description').style.display = "none";
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//Close settings if open
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if (UI.settingsOpen === true) {
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UI.settingsApply();
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UI.closeSettingsMenu();
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}
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//Close connection settings if open
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if (UI.connSettingsOpen === true) {
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UI.toggleConnectPanel();
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}
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//Toggle Clipboard Panel
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if (UI.clipboardOpen === true) {
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$D('noVNC_clipboard').style.display = "none";
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$D('clipboardButton').className = "noVNC_status_button";
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UI.clipboardOpen = false;
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} else {
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$D('noVNC_clipboard').style.display = "block";
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$D('clipboardButton').className = "noVNC_status_button_selected";
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UI.clipboardOpen = true;
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}
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},
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// Show the connection settings panel/menu
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toggleConnectPanel: function() {
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// Close the description panel
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$D('noVNC_description').style.display = "none";
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//Close connection settings if open
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if (UI.settingsOpen === true) {
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UI.settingsApply();
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UI.closeSettingsMenu();
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$D('connectButton').className = "noVNC_status_button";
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}
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if (UI.clipboardOpen === true) {
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UI.toggleClipboardPanel();
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}
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//Toggle Connection Panel
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if (UI.connSettingsOpen === true) {
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$D('noVNC_controls').style.display = "none";
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$D('connectButton').className = "noVNC_status_button";
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UI.connSettingsOpen = false;
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} else {
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$D('noVNC_controls').style.display = "block";
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$D('connectButton').className = "noVNC_status_button_selected";
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UI.connSettingsOpen = true;
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$D('noVNC_host').focus();
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}
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},
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// Toggle the settings menu:
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// On open, settings are refreshed from saved cookies.
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// On close, settings are applied
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toggleSettingsPanel: function() {
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// Close the description panel
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$D('noVNC_description').style.display = "none";
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if (UI.settingsOpen) {
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UI.settingsApply();
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UI.closeSettingsMenu();
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} else {
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UI.updateSetting('encrypt');
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UI.updateSetting('true_color');
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if (UI.rfb.get_display().get_cursor_uri()) {
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UI.updateSetting('cursor');
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} else {
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UI.updateSetting('cursor', false);
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$D('noVNC_cursor').disabled = true;
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}
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UI.updateSetting('clip');
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UI.updateSetting('shared');
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UI.updateSetting('view_only');
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UI.updateSetting('connectTimeout');
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UI.updateSetting('path');
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UI.updateSetting('repeaterID');
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UI.updateSetting('stylesheet');
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UI.updateSetting('logging');
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UI.openSettingsMenu();
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}
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},
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// Open menu
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openSettingsMenu: function() {
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// Close the description panel
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$D('noVNC_description').style.display = "none";
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if (UI.clipboardOpen === true) {
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UI.toggleClipboardPanel();
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}
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//Close connection settings if open
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if (UI.connSettingsOpen === true) {
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UI.toggleConnectPanel();
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}
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$D('noVNC_settings').style.display = "block";
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$D('settingsButton').className = "noVNC_status_button_selected";
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UI.settingsOpen = true;
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},
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// Close menu (without applying settings)
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closeSettingsMenu: function() {
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$D('noVNC_settings').style.display = "none";
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$D('settingsButton').className = "noVNC_status_button";
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UI.settingsOpen = false;
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},
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// Save/apply settings when 'Apply' button is pressed
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settingsApply: function() {
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//Util.Debug(">> settingsApply");
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UI.saveSetting('encrypt');
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UI.saveSetting('true_color');
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if (UI.rfb.get_display().get_cursor_uri()) {
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UI.saveSetting('cursor');
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}
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UI.saveSetting('clip');
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UI.saveSetting('shared');
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UI.saveSetting('view_only');
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UI.saveSetting('connectTimeout');
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UI.saveSetting('path');
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UI.saveSetting('repeaterID');
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UI.saveSetting('stylesheet');
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UI.saveSetting('logging');
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// Settings with immediate (non-connected related) effect
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WebUtil.selectStylesheet(UI.getSetting('stylesheet'));
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WebUtil.init_logging(UI.getSetting('logging'));
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UI.setViewClip();
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UI.setViewDrag(UI.rfb.get_viewportDrag());
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//Util.Debug("<< settingsApply");
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},
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setPassword: function() {
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UI.rfb.sendPassword($D('noVNC_password').value);
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//Reset connect button.
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$D('noVNC_connect_button').value = "Connect";
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$D('noVNC_connect_button').onclick = UI.Connect;
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//Hide connection panel.
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UI.toggleConnectPanel();
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return false;
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},
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sendCtrlAltDel: function() {
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UI.rfb.sendCtrlAltDel();
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},
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setMouseButton: function(num) {
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var b, blist = [0, 1,2,4], button;
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if (typeof num === 'undefined') {
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// Disable mouse buttons
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num = -1;
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}
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if (UI.rfb) {
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UI.rfb.get_mouse().set_touchButton(num);
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}
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for (b = 0; b < blist.length; b++) {
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button = $D('noVNC_mouse_button' + blist[b]);
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if (blist[b] === num) {
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button.style.display = "";
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} else {
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button.style.display = "none";
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/*
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button.style.backgroundColor = "black";
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button.style.color = "lightgray";
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button.style.backgroundColor = "";
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button.style.color = "";
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*/
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}
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}
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},
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updateState: function(rfb, state, oldstate, msg) {
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var s, sb, c, d, cad, vd, klass;
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UI.rfb_state = state;
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s = $D('noVNC_status');
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sb = $D('noVNC_status_bar');
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switch (state) {
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case 'failed':
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case 'fatal':
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klass = "noVNC_status_error";
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break;
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case 'normal':
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klass = "noVNC_status_normal";
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break;
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case 'disconnected':
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$D('noVNC_logo').style.display = "block";
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// Fall through
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case 'loaded':
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klass = "noVNC_status_normal";
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break;
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case 'password':
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UI.toggleConnectPanel();
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$D('noVNC_connect_button').value = "Send Password";
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$D('noVNC_connect_button').onclick = UI.setPassword;
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$D('noVNC_password').focus();
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klass = "noVNC_status_warn";
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break;
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default:
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klass = "noVNC_status_warn";
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break;
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}
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if (typeof(msg) !== 'undefined') {
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s.setAttribute("class", klass);
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sb.setAttribute("class", klass);
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s.innerHTML = msg;
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}
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UI.updateVisualState();
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},
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// Disable/enable controls depending on connection state
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updateVisualState: function() {
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var connected = UI.rfb_state === 'normal' ? true : false;
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//Util.Debug(">> updateVisualState");
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$D('noVNC_encrypt').disabled = connected;
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$D('noVNC_true_color').disabled = connected;
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if (UI.rfb && UI.rfb.get_display() &&
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UI.rfb.get_display().get_cursor_uri()) {
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$D('noVNC_cursor').disabled = connected;
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} else {
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UI.updateSetting('cursor', false);
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$D('noVNC_cursor').disabled = true;
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}
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$D('noVNC_shared').disabled = connected;
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$D('noVNC_view_only').disabled = connected;
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$D('noVNC_connectTimeout').disabled = connected;
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$D('noVNC_path').disabled = connected;
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$D('noVNC_repeaterID').disabled = connected;
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if (connected) {
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UI.setViewClip();
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UI.setMouseButton(1);
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$D('clipboardButton').style.display = "inline";
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$D('showKeyboard').style.display = "inline";
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$D('sendCtrlAltDelButton').style.display = "inline";
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} else {
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UI.setMouseButton();
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$D('clipboardButton').style.display = "none";
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$D('showKeyboard').style.display = "none";
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$D('sendCtrlAltDelButton').style.display = "none";
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}
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// State change disables viewport dragging.
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// It is enabled (toggled) by direct click on the button
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UI.setViewDrag(false);
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switch (UI.rfb_state) {
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case 'fatal':
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case 'failed':
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case 'loaded':
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case 'disconnected':
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$D('connectButton').style.display = "";
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$D('disconnectButton').style.display = "none";
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break;
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default:
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$D('connectButton').style.display = "none";
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$D('disconnectButton').style.display = "";
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break;
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}
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//Util.Debug("<< updateVisualState");
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},
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clipReceive: function(rfb, text) {
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Util.Debug(">> UI.clipReceive: " + text.substr(0,40) + "...");
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$D('noVNC_clipboard_text').value = text;
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Util.Debug("<< UI.clipReceive");
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},
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connect: function() {
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var host, port, password, path;
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UI.closeSettingsMenu();
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UI.toggleConnectPanel();
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host = $D('noVNC_host').value;
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port = $D('noVNC_port').value;
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password = $D('noVNC_password').value;
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path = $D('noVNC_path').value;
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if ((!host) || (!port)) {
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throw("Must set host and port");
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}
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UI.rfb.set_encrypt(UI.getSetting('encrypt'));
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UI.rfb.set_true_color(UI.getSetting('true_color'));
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UI.rfb.set_local_cursor(UI.getSetting('cursor'));
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UI.rfb.set_shared(UI.getSetting('shared'));
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UI.rfb.set_view_only(UI.getSetting('view_only'));
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UI.rfb.set_connectTimeout(UI.getSetting('connectTimeout'));
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UI.rfb.set_repeaterID(UI.getSetting('repeaterID'));
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UI.rfb.connect(host, port, password, path);
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//Close dialog.
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setTimeout(UI.setBarPosition, 100);
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$D('noVNC_logo').style.display = "none";
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},
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disconnect: function() {
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UI.closeSettingsMenu();
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UI.rfb.disconnect();
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$D('noVNC_logo').style.display = "block";
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UI.connSettingsOpen = false;
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UI.toggleConnectPanel();
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},
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displayBlur: function() {
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UI.rfb.get_keyboard().set_focused(false);
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UI.rfb.get_mouse().set_focused(false);
|
|
},
|
|
|
|
displayFocus: function() {
|
|
UI.rfb.get_keyboard().set_focused(true);
|
|
UI.rfb.get_mouse().set_focused(true);
|
|
},
|
|
|
|
clipClear: function() {
|
|
$D('noVNC_clipboard_text').value = "";
|
|
UI.rfb.clipboardPasteFrom("");
|
|
},
|
|
|
|
clipSend: function() {
|
|
var text = $D('noVNC_clipboard_text').value;
|
|
Util.Debug(">> UI.clipSend: " + text.substr(0,40) + "...");
|
|
UI.rfb.clipboardPasteFrom(text);
|
|
Util.Debug("<< UI.clipSend");
|
|
},
|
|
|
|
|
|
// Enable/disable and configure viewport clipping
|
|
setViewClip: function(clip) {
|
|
var display, cur_clip, pos, new_w, new_h;
|
|
|
|
if (UI.rfb) {
|
|
display = UI.rfb.get_display();
|
|
} else {
|
|
return;
|
|
}
|
|
|
|
cur_clip = display.get_viewport();
|
|
|
|
if (typeof(clip) !== 'boolean') {
|
|
// Use current setting
|
|
clip = UI.getSetting('clip');
|
|
}
|
|
|
|
if (clip && !cur_clip) {
|
|
// Turn clipping on
|
|
UI.updateSetting('clip', true);
|
|
} else if (!clip && cur_clip) {
|
|
// Turn clipping off
|
|
UI.updateSetting('clip', false);
|
|
display.set_viewport(false);
|
|
$D('noVNC_canvas').style.position = 'static';
|
|
display.viewportChange();
|
|
}
|
|
if (UI.getSetting('clip')) {
|
|
// If clipping, update clipping settings
|
|
$D('noVNC_canvas').style.position = 'absolute';
|
|
pos = Util.getPosition($D('noVNC_canvas'));
|
|
new_w = window.innerWidth - pos.x;
|
|
new_h = window.innerHeight - pos.y;
|
|
display.set_viewport(true);
|
|
display.viewportChange(0, 0, new_w, new_h);
|
|
}
|
|
},
|
|
|
|
// Toggle/set/unset the viewport drag/move button
|
|
setViewDrag: function(drag) {
|
|
var vmb = $D('noVNC_view_drag_button');
|
|
if (!UI.rfb) { return; }
|
|
|
|
if (UI.rfb_state === 'normal' &&
|
|
UI.rfb.get_display().get_viewport()) {
|
|
vmb.style.display = "inline";
|
|
} else {
|
|
vmb.style.display = "none";
|
|
}
|
|
|
|
if (typeof(drag) === "undefined") {
|
|
// If not specified, then toggle
|
|
drag = !UI.rfb.get_viewportDrag();
|
|
}
|
|
if (drag) {
|
|
vmb.className = "noVNC_status_button_selected";
|
|
UI.rfb.set_viewportDrag(true);
|
|
} else {
|
|
vmb.className = "noVNC_status_button";
|
|
UI.rfb.set_viewportDrag(false);
|
|
}
|
|
},
|
|
|
|
// On touch devices, show the OS keyboard
|
|
showKeyboard: function() {
|
|
if(UI.keyboardVisible === false) {
|
|
$D('keyboardinput').focus();
|
|
UI.keyboardVisible = true;
|
|
$D('showKeyboard').className = "noVNC_status_button_selected";
|
|
} else if(UI.keyboardVisible === true) {
|
|
$D('keyboardinput').blur();
|
|
$D('showKeyboard').className = "noVNC_status_button";
|
|
UI.keyboardVisible = false;
|
|
}
|
|
},
|
|
|
|
keyInputBlur: function() {
|
|
$D('showKeyboard').className = "noVNC_status_button";
|
|
//Weird bug in iOS if you change keyboardVisible
|
|
//here it does not actually occur so next time
|
|
//you click keyboard icon it doesnt work.
|
|
setTimeout(function() { UI.setKeyboard(); },100);
|
|
},
|
|
|
|
setKeyboard: function() {
|
|
UI.keyboardVisible = false;
|
|
},
|
|
|
|
// iOS < Version 5 does not support position fixed. Javascript workaround:
|
|
setOnscroll: function() {
|
|
window.onscroll = function() {
|
|
UI.setBarPosition();
|
|
};
|
|
},
|
|
|
|
setResize: function () {
|
|
window.onResize = function() {
|
|
UI.setBarPosition();
|
|
};
|
|
},
|
|
|
|
//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);
|
|
},
|
|
|
|
setBarPosition: function() {
|
|
$D('noVNC-control-bar').style.top = (window.pageYOffset) + 'px';
|
|
$D('noVNC_mobile_buttons').style.left = (window.pageXOffset) + 'px';
|
|
|
|
var vncwidth = $D('noVNC_screen').style.offsetWidth;
|
|
$D('noVNC-control-bar').style.width = vncwidth + 'px';
|
|
}
|
|
|
|
};
|
|
|
|
|
|
|
|
|