Add noVNC HTML5 client connect possibility to our http server.

Pure JavaScript, no Java plugin required anymore! (But a recent browser...)

1 files changed, 629 insertions, 0 deletions

diff --git a/classes/novnc/include/ui.js b/classes/novnc/include/ui.js
new file mode 100644
index 0000000..74a0005
--- /dev/null
+++ b/classes/novnc/include/ui.js
@@ -0,0 +1,629 @@
+/*
+ * noVNC: HTML5 VNC client
+ * Copyright (C) 2011 Joel Martin
+ * Licensed under LGPL-3 (see LICENSE.txt)
+ *
+ * See README.md for usage and integration instructions.
+ */
+
+"use strict";
+/*jslint white: false, browser: true */
+/*global window, $D, Util, WebUtil, RFB, Display */
+
+var UI = {
+
+rfb_state : 'loaded',
+settingsOpen : false,
+connSettingsOpen : true,
+clipboardOpen: false,
+keyboardVisible: false,
+
+// Render default UI and initialize settings menu
+load: function() {
+    var html = '', i, sheet, sheets, llevels;
+
+    // Stylesheet selection dropdown
+    sheet = WebUtil.selectStylesheet();
+    sheets = WebUtil.getStylesheets();
+    for (i = 0; i < sheets.length; i += 1) {
+        UI.addOption($D('noVNC_stylesheet'),sheets[i].title, sheets[i].title);
+    }
+
+    // Logging selection dropdown
+    llevels = ['error', 'warn', 'info', 'debug'];
+    for (i = 0; i < llevels.length; i += 1) {
+        UI.addOption($D('noVNC_logging'),llevels[i], llevels[i]);
+    }
+
+    // Settings with immediate effects
+    UI.initSetting('logging', 'warn');
+    WebUtil.init_logging(UI.getSetting('logging'));
+
+    UI.initSetting('stylesheet', 'default');
+    WebUtil.selectStylesheet(null);
+    // call twice to get around webkit bug
+    WebUtil.selectStylesheet(UI.getSetting('stylesheet'));
+
+    /* Populate the controls if defaults are provided in the URL */
+    UI.initSetting('host', '');
+    UI.initSetting('port', '');
+    UI.initSetting('password', '');
+    UI.initSetting('encrypt', false);
+    UI.initSetting('true_color', true);
+    UI.initSetting('cursor', false);
+    UI.initSetting('shared', true);
+    UI.initSetting('connectTimeout', 2);
+    UI.initSetting('path', '');
+
+    UI.rfb = RFB({'target': $D('noVNC_canvas'),
+                  'onUpdateState': UI.updateState,
+                  'onClipboard': UI.clipReceive});
+    UI.updateVisualState();
+
+    // Unfocus clipboard when over the VNC area
+    //$D('VNC_screen').onmousemove = function () {
+    //         var keyboard = UI.rfb.get_keyboard();
+    //        if ((! keyboard) || (! keyboard.get_focused())) {
+    //            $D('VNC_clipboard_text').blur();
+    //         }
+    //    };
+
+    // Show mouse selector buttons on touch screen devices
+    if ('ontouchstart' in document.documentElement) {
+        // Show mobile buttons
+        $D('noVNC_mobile_buttons').style.display = "inline";
+        UI.setMouseButton();
+        // Remove the address bar
+        setTimeout(function() { window.scrollTo(0, 1); }, 100);
+        UI.forceSetting('clip', true);
+        $D('noVNC_clip').disabled = true;
+    } else {
+        UI.initSetting('clip', false);
+    }
+
+    //iOS Safari does not support CSS position:fixed.
+    //This detects iOS devices and enables javascript workaround.
+    if ((navigator.userAgent.match(/iPhone/i)) ||
+        (navigator.userAgent.match(/iPod/i)) ||
+        (navigator.userAgent.match(/iPad/i))) {
+        //UI.setOnscroll();
+        //UI.setResize();
+    }
+
+    $D('noVNC_host').focus();
+
+    UI.setViewClip();
+    Util.addEvent(window, 'resize', UI.setViewClip);
+
+    Util.addEvent(window, 'beforeunload', function () {
+        if (UI.rfb_state === 'normal') {
+            return "You are currently connected.";
+        }
+    } );
+
+},
+
+// Read form control compatible setting from cookie
+getSetting: function(name) {
+    var val, ctrl = $D('noVNC_' + name);
+    val = WebUtil.readCookie(name);
+    if (ctrl.type === 'checkbox') {
+        if (val.toLowerCase() in {'0':1, 'no':1, 'false':1}) {
+            val = false;
+        } else {
+            val = true;
+        }
+    }
+    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) {
+
+    var i, ctrl = $D('noVNC_' + name);
+    // Save the cookie for this session
+    if (typeof value !== 'undefined') {
+        WebUtil.createCookie(name, value);
+    }
+
+    // Update the settings control
+    value = UI.getSetting(name);
+
+    if (ctrl.type === 'checkbox') {
+        ctrl.checked = value;
+
+    } else if (typeof ctrl.options !== 'undefined') {
+        for (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 = $D('noVNC_' + 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.createCookie(name, val);
+    //Util.Debug("Setting saved '" + name + "=" + val + "'");
+    return val;
+},
+
+// Initial page load read/initialization of settings
+initSetting: function(name, defVal) {
+    var val;
+
+    // Check Query string followed by cookie
+    val = WebUtil.getQueryVar(name);
+    if (val === null) {
+        val = WebUtil.readCookie(name, defVal);
+    }
+    UI.updateSetting(name, val);
+ //Util.Debug("Setting '" + name + "' initialized to '" + val + "'");
+    return val;
+},
+
+// Force a setting to be a certain value
+forceSetting: function(name, val) {
+    UI.updateSetting(name, val);
+    return val;
+},
+
+
+// Show the clipboard panel
+toggleClipboardPanel: function() {
+    //Close settings if open
+    if (UI.settingsOpen == true) {
+        UI.settingsApply();
+        UI.closeSettingsMenu();
+    }
+    //Close connection settings if open
+    if (UI.connSettingsOpen == true) {
+        UI.toggleConnectPanel();
+    }
+    //Toggle Clipboard Panel
+    if (UI.clipboardOpen == true) {
+        $D('noVNC_clipboard').style.display = "none";
+        $D('clipboardButton').className = "noVNC_status_button";
+        UI.clipboardOpen = false;
+    } else {
+        $D('noVNC_clipboard').style.display = "block";
+        $D('clipboardButton').className = "noVNC_status_button_selected";
+        UI.clipboardOpen = true;
+    }
+},
+
+// Show the connection settings panel/menu
+toggleConnectPanel: function() {
+    //Close connection settings if open
+    if (UI.settingsOpen == true) {
+        UI.settingsApply();
+        UI.closeSettingsMenu();
+        $D('connectButton').className = "noVNC_status_button";
+    }
+    if (UI.clipboardOpen == true) {
+        UI.toggleClipboardPanel();
+    }
+
+    //Toggle Connection Panel
+    if (UI.connSettingsOpen == true) {
+        $D('noVNC_controls').style.display = "none";
+        $D('connectButton').className = "noVNC_status_button";
+        UI.connSettingsOpen = false;
+    } else {
+        $D('noVNC_controls').style.display = "block";
+        $D('connectButton').className = "noVNC_status_button_selected";
+        UI.connSettingsOpen = true;
+        $D('noVNC_host').focus();
+    }
+},
+
+// Toggle the settings menu:
+//   On open, settings are refreshed from saved cookies.
+//   On close, settings are applied
+toggleSettingsPanel: function() {
+    if (UI.settingsOpen) {
+        UI.settingsApply();
+        UI.closeSettingsMenu();
+    } else {
+        UI.updateSetting('encrypt');
+        UI.updateSetting('true_color');
+        if (UI.rfb.get_display().get_cursor_uri()) {
+            UI.updateSetting('cursor');
+        } else {
+            UI.updateSetting('cursor', false);
+            $D('noVNC_cursor').disabled = true;
+        }
+        UI.updateSetting('clip');
+        UI.updateSetting('shared');
+        UI.updateSetting('connectTimeout');
+        UI.updateSetting('path');
+        UI.updateSetting('stylesheet');
+        UI.updateSetting('logging');
+
+        UI.openSettingsMenu();
+    }
+},
+
+// Open menu
+openSettingsMenu: function() {
+    if (UI.clipboardOpen == true) {
+        UI.toggleClipboardPanel();
+    }
+    //Close connection settings if open
+    if (UI.connSettingsOpen == true) {
+        UI.toggleConnectPanel();
+    }
+    $D('noVNC_settings').style.display = "block";
+    $D('settingsButton').className = "noVNC_status_button_selected";
+    UI.settingsOpen = true;
+},
+
+// Close menu (without applying settings)
+closeSettingsMenu: function() {
+    $D('noVNC_settings').style.display = "none";
+    $D('settingsButton').className = "noVNC_status_button";
+    UI.settingsOpen = false;
+},
+
+// Save/apply settings when 'Apply' button is pressed
+settingsApply: function() {
+    //Util.Debug(">> settingsApply");
+    UI.saveSetting('encrypt');
+    UI.saveSetting('true_color');
+    if (UI.rfb.get_display().get_cursor_uri()) {
+        UI.saveSetting('cursor');
+    }
+    UI.saveSetting('clip');
+    UI.saveSetting('shared');
+    UI.saveSetting('connectTimeout');
+    UI.saveSetting('path');
+    UI.saveSetting('stylesheet');
+    UI.saveSetting('logging');
+
+    // Settings with immediate (non-connected related) effect
+    WebUtil.selectStylesheet(UI.getSetting('stylesheet'));
+    WebUtil.init_logging(UI.getSetting('logging'));
+    UI.setViewClip();
+    UI.setViewDrag(UI.rfb.get_viewportDrag());
+    //Util.Debug("<< settingsApply");
+},
+
+
+
+setPassword: function() {
+    UI.rfb.sendPassword($D('noVNC_password').value);
+    //Reset connect button.
+    $D('noVNC_connect_button').value = "Connect";
+    $D('noVNC_connect_button').onclick = UI.Connect;
+    //Hide connection panel.
+    UI.toggleConnectPanel();
+    return false;
+},
+
+sendCtrlAltDel: function() {
+    UI.rfb.sendCtrlAltDel();
+},
+
+setMouseButton: function(num) {
+    var b, blist = [0, 1,2,4], button;
+
+    if (typeof num === 'undefined') {
+        // Disable mouse buttons
+        num = -1;
+    }
+    if (UI.rfb) {
+        UI.rfb.get_mouse().set_touchButton(num);
+    }
+
+    for (b = 0; b < blist.length; b++) {
+        button = $D('noVNC_mouse_button' + blist[b]);
+        if (blist[b] === num) {
+            button.style.display = "";
+        } else {
+            button.style.display = "none";
+            /*
+            button.style.backgroundColor = "black";
+            button.style.color = "lightgray";
+            button.style.backgroundColor = "";
+            button.style.color = "";
+            */
+        }
+    }
+},
+
+updateState: function(rfb, state, oldstate, msg) {
+    var s, sb, c, d, cad, vd, klass;
+    UI.rfb_state = state;
+    s = $D('noVNC_status');
+    sb = $D('noVNC_status_bar');
+    switch (state) {
+        case 'failed':
+        case 'fatal':
+            klass = "noVNC_status_error";
+            break;
+        case 'normal':
+            klass = "noVNC_status_normal";
+            break;
+        case 'disconnected':
+            $D('noVNC_logo').style.display = "block";
+        case 'loaded':
+            klass = "noVNC_status_normal";
+            break;
+        case 'password':
+            UI.toggleConnectPanel();
+
+            $D('noVNC_connect_button').value = "Send Password";
+            $D('noVNC_connect_button').onclick = UI.setPassword;
+            $D('noVNC_password').focus();
+
+            klass = "noVNC_status_warn";
+            break;
+        default:
+            klass = "noVNC_status_warn";
+            break;
+    }
+
+    if (typeof(msg) !== 'undefined') {
+        s.setAttribute("class", klass);
+        sb.setAttribute("class", klass);
+        s.innerHTML = msg;
+    }
+
+    UI.updateVisualState();
+},
+
+// Disable/enable controls depending on connection state
+updateVisualState: function() {
+    var connected = UI.rfb_state === 'normal' ? true : false;
+
+    //Util.Debug(">> updateVisualState");
+    $D('noVNC_encrypt').disabled = connected;
+    $D('noVNC_true_color').disabled = connected;
+    if (UI.rfb && UI.rfb.get_display() &&
+        UI.rfb.get_display().get_cursor_uri()) {
+        $D('noVNC_cursor').disabled = connected;
+    } else {
+        UI.updateSetting('cursor', false);
+        $D('noVNC_cursor').disabled = true;
+    }
+    $D('noVNC_shared').disabled = connected;
+    $D('noVNC_connectTimeout').disabled = connected;
+    $D('noVNC_path').disabled = connected;
+
+    if (connected) {
+        UI.setViewClip();
+        UI.setMouseButton(1);
+        $D('showKeyboard').style.display = "inline";
+        $D('sendCtrlAltDelButton').style.display = "inline";
+    } else {
+        UI.setMouseButton();
+        $D('showKeyboard').style.display = "none";
+        $D('sendCtrlAltDelButton').style.display = "none";
+    }
+    // State change disables viewport dragging.
+    // It is enabled (toggled) by direct click on the button
+    UI.setViewDrag(false);
+
+    switch (UI.rfb_state) {
+        case 'fatal':
+        case 'failed':
+        case 'loaded':
+        case 'disconnected':
+            $D('connectButton').style.display = "";
+            $D('disconnectButton').style.display = "none";
+            break;
+        default:
+            $D('connectButton').style.display = "none";
+            $D('disconnectButton').style.display = "";
+            break;
+    }
+
+    //Util.Debug("<< updateVisualState");
+},
+
+
+clipReceive: function(rfb, text) {
+    Util.Debug(">> UI.clipReceive: " + text.substr(0,40) + "...");
+    $D('noVNC_clipboard_text').value = text;
+    Util.Debug("<< UI.clipReceive");
+},
+
+
+connect: function() {
+    var host, port, password, path;
+
+    UI.closeSettingsMenu();
+    UI.toggleConnectPanel();
+
+    host = $D('noVNC_host').value;
+    port = $D('noVNC_port').value;
+    password = $D('noVNC_password').value;
+    path = $D('noVNC_path').value;
+    if ((!host) || (!port)) {
+        throw("Must set host and port");
+    }
+
+    UI.rfb.set_encrypt(UI.getSetting('encrypt'));
+    UI.rfb.set_true_color(UI.getSetting('true_color'));
+    UI.rfb.set_local_cursor(UI.getSetting('cursor'));
+    UI.rfb.set_shared(UI.getSetting('shared'));
+    UI.rfb.set_connectTimeout(UI.getSetting('connectTimeout'));
+
+    UI.rfb.connect(host, port, password, path);
+    //Close dialog.
+    setTimeout(UI.setBarPosition, 100);
+    $D('noVNC_logo').style.display = "none";
+},
+
+disconnect: function() {
+    UI.closeSettingsMenu();
+    UI.rfb.disconnect();
+
+    $D('noVNC_logo').style.display = "block";
+    UI.connSettingsOpen = false;
+    UI.toggleConnectPanel();
+},
+
+displayBlur: function() {
+    UI.rfb.get_keyboard().set_focused(false);
+    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("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';
+}
+
+};
+
+
+
+