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index.php
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<?php
/*
Copyright (C) 2014-2015 Universitätsbibliothek Mannheim
See file LICENSE for license details.
Authors: Alexander Wagner, Stefan Weil, Dennis Müller
References:
File upload (general)
* http://www.php.net/manual/en/features.file-upload.post-method.php
File upload with dropzone
* http://www.dropzonejs.com/
* http://www.startutorial.com/articles/view/how-to-build-a-file-upload-form-using-dropzonejs-and-php
* http://maxoffsky.com/code-blog/howto-ajax-multiple-file-upload-in-laravel/
Websockets:
* https://en.wikipedia.org/wiki/Server-sent_events
* https://developer.mozilla.org/en-US/docs/WebSockets/Writing_WebSocket_client_applications
* http://code.google.com/p/phpwebsocket/
* http://dharman.eu/?menu=phpWebSocketsTutorial
Keyboard input
* http://jsfiddle.net/angusgrant/E3tE6/
* http://stackoverflow.com/questions/3181648/how-can-i-handle-arrowkeys-and-greater-than-in-a-javascript-function-which
* http://stackoverflow.com/questions/5597060/detecting-arrow-key-presses-in-javascript
* http://www.quirksmode.org/js/keys.html
Key symbols
* http://www.tcl.tk/man/tcl8.4/TkCmd/keysyms.htm
* wmctrl, suckless-tools (lsw, sprop, wmname, ...)
* display.im6, evince
Authorization
* http://aktuell.de.selfhtml.org/artikel/php/loginsystem/
Overlays
* http://answers.oreilly.com/topic/1823-adding-a-page-overlay-in-javascript/
*/
session_start();
if (isset($_REQUEST['monitor'])) {
$monitor = $_REQUEST['monitor'];
$_SESSION['monitor'] = $monitor;
} elseif (!isset($_SESSION['monitor'])) {
$_SESSION['monitor'] = '???';
}
$_SESSION['referer'] = 'index.php';
require_once('auth.php');
// Connect to database and get configuration constants.
require_once('DBConnector.class.php');
$dbcon = new palma\DBConnector();
// Support localisation.
require_once('i12n.php');
$user = false;
if (isset($_SESSION['username'])) {
# PHP session based authorization.
$username = $_SESSION['username'];
$address = $_SESSION['address'];
$user = "$username@$address";
} elseif (isset($_SERVER['PHP_AUTH_USER'])) {
# .htaccess basic authorization.
$user = $_SERVER['PHP_AUTH_USER'];
}
require_once('globals.php');
/*
* file paths for vnc downloads
*/
$winvnc = CONFIG_START_URL . "theme/" . CONFIG_THEME . "/winvnc-palma.exe";
$macvnc = "https://www.bib.uni-mannheim.de/palma/VineServer.dmg";
$linuxsh = CONFIG_START_URL . "theme/" . CONFIG_THEME . "/x11.sh";
/*
* contact form elements
* might be sourced out and included
*/
if (isset($_POST['submit'])) {
$to = "[email protected]";
$to = "[email protected]";
$from = $_POST['email'];
$name = $_POST['name'];
$subject = "Feedback for PalMA";
$message = $name . " wrote the following:" . "\n\n" . $_POST['message'];
$headers = "From:" . $from;
mail($to, $subject, $message, $headers);
echo "Mail Sent. Thank you for your feedback " . $name . ", we will get in touch with you shortly.";
}
?>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
"http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>PalMA</title>
<link rel="icon" href="theme/<?=CONFIG_THEME?>/favicon.ico" type="image/x-icon">
<link rel="stylesheet" href="font-awesome/css/font-awesome.min.css">
<link rel="stylesheet" href="pure-min.css">
<link rel="stylesheet" href="palma.css" type="text/css">
<script type="text/javascript" src="jquery.min.js"></script>
<script type="text/javascript" src="dropzone.js"></script>
<script type="text/javascript">
// Screen section which responds to keyboard input.
var focus_section = '1';
function sendToNuc(command) {
var xmlHttp = new XMLHttpRequest();
if (!xmlHttp) {
// TODO
alert('XMLHttpRequest failed!');
return;
}
var url = 'control.php?' + command;
var response = "";
xmlHttp.open("get", url, true);
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 1) {
// Server connection established (IE only).
} else if (xmlHttp.readyState == 2) {
// Data transferred to server.
} else if (xmlHttp.readyState == 3) {
// Server is answering.
} else if (xmlHttp.readyState == 4) {
// Received all data from server.
return xmlHttp.responseText;
} else {
alert("Got xmlHttp.readyState " + xmlHttp.readyState);
}
};
xmlHttp.send(null);
//~ alert("sendToNuc " + url);
}
function keyControl(number, image, controlClass, key, handler, disabled, title) {
// "number" refers to the slected screensection
var keyHandler = getHandlerCommand(handler, key);
if ( (keyHandler == "") || (keyHandler == null) ) {
keyHandler = "default";
}
var button = document.createElement('button');
var icon = document.createElement('i');
if (!disabled) {
icon.setAttribute('class', image);
button.appendChild(icon);
button.setAttribute('class', controlClass);
button.setAttribute('onmousedown',
'sendToNuc("window=' + number + '&keydown=' + encodeURIComponent(keyHandler) + '")');
button.setAttribute('onmouseup',
'sendToNuc("window=' + number + '&keyup=' + encodeURIComponent(keyHandler) + '")');
button.setAttribute('title', title);
} else {
icon.setAttribute('class', image + " unavailable");
button.appendChild(icon);
button.setAttribute("class", "unavailable");
button.setAttribute('title', title + " " + "<?=__('not available')?>");
}
return button;
}
function downloadFile(screensection) {
// wrong path if copied to /home/directory
// TODO: check file and path
var url = document.URL;
var url_path = url.split("/");
var file = document.getElementById("file" + screensection).innerHTML;
var file = document.getElementById("file" + screensection).getAttribute("title");
// Download with download.php
var download = url_path[0]+"/"+url_path[1]+"/"+url_path[2]+"/"+url_path[3]+"/download.php?file="+encodeURIComponent(file);
var name = "Download";
if(file.indexOf("www.") > -1) {
window.open(file, name);
} else {
window.open(download, name);
}
}
function is_valid_url(url)
{
return url.match(/(^(ht|f)tps?:\/\/)([a-zA-Z0-9\.-])+(\.([a-zA-Z]{2,}))(\/([^\s\<\>\,\{\}\\\|\^\[\]\'])*)?$/);
}
function urlToNuc() {
var url = document.getElementById('url_field').value;
if (is_valid_url(url)) {
// Encode special characters
url = encodeURIComponent(url);
sendToNuc('openURL='+url);
} else {
var urlfield = document.getElementById('url_field');
urlfield.setAttribute('value', '<?=__("Enter valid URL")?>');
}
setTimeout(function(){location.reload()}, 1000);
}
function showLayout(layout, controls, window) {
//~ console.log("Layout: " + layout);
//~ for (i = 0; i < controls.length; i++) {
//~ console.log("SL " + i + ": " + controls[i]);
//~ }
document.onkeydown = function(evt) {
evt = evt || window.event;
var section = focus_section;
var handler = controls[focus_section][0];
var keyHandler;
//~ console.log("Key down: " + evt.keyCode);
switch (evt.keyCode) {
case 33: // page up
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'prior'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 34: // page down
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'next'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 35: // end
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'end'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 36: // home
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'home'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 37: // left
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'left'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 38: // up
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'up'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 39: // right
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'right'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case 40: // down
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'down'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
}
};
document.onkeypress = function(evt) {
evt = evt || window.event;
//~ console.log("Key press: " + evt.keyCode);
var charCode = evt.which || evt.keyCode;
var charStr = String.fromCharCode(charCode);
var section = focus_section;
var handler = controls[focus_section][0];
var keyHandler;
switch (charStr) {
case "1": // select section 1
case "2": // select section 2
case "3": // select section 3
case "4": // select section 4
focus_section = charStr;
break;
case "+": // zoom in
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'zoomin'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
case "-": // zoom out
keyHandler = encodeURIComponent(getHandlerCommand(handler, 'zoomout'));
sendToNuc('window=' + section + '&key=' + keyHandler);
break;
}
};
var windowlist = document.getElementById('windowlist');
var entries = windowlist.getElementsByClassName('window_entry');
var screensection, file, status;
markCurrentLayout(layout);
for (var n = 0; n < window.length; n++) {
screensection = window[n].section;
file = window[n].file;
status = window[n].state;
entries[n].appendChild(addWindowControls(layout, controls, screensection, file, status));
}
}
function markCurrentLayout(layout) {
var layoutDivs = document.getElementsByClassName("screenlayout");
for (var i = 0 ; i < layoutDivs.length ; i++) {
var children = layoutDivs[i].getElementsByClassName("pure-button");
for (var k = 0 ; k < children.length ; k++) {
children[k].style.backgroundColor = "";
}
}
document.getElementById(layout).style.backgroundColor = "#990000";
}
function miniDisplaySelect(element) {
sendToNuc('layout=' + element.id);
markCurrentLayout(element.id);
}
function getHandlerCommand(handle, task) {
// console.log("getHandlerCommand "+handle+" - "+task);
// to deactivate buttons just add 'undefined' as keystroke
var handler = [];
handler["default"] = {};
// handler["default"]["init"] = "";
handler["default"]["up"] = "Up";
handler["default"]["down"] = "Down";
handler["default"]["left"] = "Left";
handler["default"]["right"] = "Right";
handler["default"]["next"] = "Next";
handler["default"]["prior"] = "Prior";
handler["default"]["home"] = "Home";
handler["default"]["end"] = "End";
handler["default"]["zoomin"] = "ctrl+plus";
handler["default"]["zoomout"] = "ctrl+minus";
handler["default"]["download"] = "download";
handler["default"]["counterclockwise"] = "undefined";
handler["default"]["clockwise"] = "undefined";
// Handler for web pages.
handler["midori"] = {};
handler["midori"]["up"] = "Up";
handler["midori"]["down"] = "Down";
handler["midori"]["left"] = "Left";
handler["midori"]["right"] = "Right";
handler["midori"]["next"] = "Next";
handler["midori"]["prior"] = "Prior";
handler["midori"]["home"] = "Home";
handler["midori"]["end"] = "End";
handler["midori"]["zoomin"] = "ctrl+plus";
handler["midori"]["zoomout"] = "ctrl+minus";
handler["midori"]["download"] = "undefined";
handler["midori"]["counterclockwise"] = "undefined";
handler["midori"]["clockwise"] = "undefined";
// Handler for images.
handler["feh"] = {};
handler["feh"]["up"] = "alt+Up";
handler["feh"]["down"] = "alt+Down";
handler["feh"]["left"] = "alt+Left";
handler["feh"]["right"] = "alt+Right";
handler["feh"]["next"] = "alt+Next";
handler["feh"]["prior"] = "alt+Prior";
handler["feh"]["home"] = "undefined";
handler["feh"]["end"] = "undefined";
handler["feh"]["zoomin"] = "KP_Add";
handler["feh"]["zoomout"] = "KP_Subtract";
handler["feh"]["download"] = "download";
handler["feh"]["counterclockwise"] = "less";
handler["feh"]["clockwise"] = "greater";
// Controls in LibreOffice: no zoom in calc and writer, has to be activated first
// by pressing <Ctrl+Shift+o> (switch view mode on/off) not implemented yet
handler["libreoffice"] = {};
handler["libreoffice"]["up"] = "Up";
handler["libreoffice"]["down"] = "Down";
handler["libreoffice"]["left"] = "Left";
handler["libreoffice"]["right"] = "Right";
handler["libreoffice"]["next"] = "Next";
handler["libreoffice"]["prior"] = "Prior";
handler["libreoffice"]["home"] = "undefined";
handler["libreoffice"]["end"] = "undefined";
handler["libreoffice"]["zoomin"] = "undefined";
handler["libreoffice"]["zoomout"] = "undefined";
handler["libreoffice"]["download"] = "download";
handler["libreoffice"]["counterclockwise"] = "undefined";
handler["libreoffice"]["clockwise"] = "undefined";
// Handler for MS Excel and LibreOffice Calc documents.
handler["libreoffice-calc"] = {};
handler["libreoffice-calc"]["up"] = "Up";
handler["libreoffice-calc"]["down"] = "Down";
handler["libreoffice-calc"]["left"] = "Left";
handler["libreoffice-calc"]["right"] = "Right";
handler["libreoffice-calc"]["next"] = "Next";
handler["libreoffice-calc"]["prior"] = "Prior";
handler["libreoffice-calc"]["home"] = "Home";
handler["libreoffice-calc"]["end"] = "End";
handler["libreoffice-calc"]["zoomin"] = "undefined";
handler["libreoffice-calc"]["zoomout"] = "undefined";
handler["libreoffice-calc"]["download"] = "download";
handler["libreoffice-calc"]["counterclockwise"] = "undefined";
handler["libreoffice-calc"]["clockwise"] = "undefined";
// Handler for MS Powerpoint and LibreOffice Impress documents.
handler["libreoffice-impress"] = {};
handler["libreoffice-impress"]["up"] = "Up";
handler["libreoffice-impress"]["down"] = "Down";
handler["libreoffice-impress"]["left"] = "Left";
handler["libreoffice-impress"]["right"] = "Right";
handler["libreoffice-impress"]["next"] = "Next";
handler["libreoffice-impress"]["prior"] = "Prior";
handler["libreoffice-impress"]["home"] = "Home";
handler["libreoffice-impress"]["end"] = "End";
handler["libreoffice-impress"]["zoomin"] = "plus";
handler["libreoffice-impress"]["zoomout"] = "minus";
handler["libreoffice-impress"]["download"] = "download";
handler["libreoffice-impress"]["counterclockwise"] = "undefined";
handler["libreoffice-impress"]["clockwise"] = "undefined";
// Handler for MS Word and LibreOffice Writer documents.
handler["libreoffice-writer"] = {};
handler["libreoffice-writer"]["up"] = "Up";
handler["libreoffice-writer"]["down"] = "Down";
handler["libreoffice-writer"]["left"] = "Left";
handler["libreoffice-writer"]["right"] = "Right";
handler["libreoffice-writer"]["next"] = "Next";
handler["libreoffice-writer"]["prior"] = "Prior";
handler["libreoffice-writer"]["home"] = "undefined";
handler["libreoffice-writer"]["end"] = "undefined";
handler["libreoffice-writer"]["zoomin"] = "undefined";
handler["libreoffice-writer"]["zoomout"] = "undefined";
handler["libreoffice-writer"]["download"] = "download";
handler["libreoffice-writer"]["counterclockwise"] = "undefined";
handler["libreoffice-writer"]["clockwise"] = "undefined";
// Handler for videos.
handler["vlc"] = {};
handler["vlc"]["up"] = "undefined";
handler["vlc"]["down"] = "undefined";
handler["vlc"]["left"] = "undefined";
handler["vlc"]["right"] = "space";
handler["vlc"]["next"] = "undefined";
handler["vlc"]["prior"] = "undefined";
handler["vlc"]["home"] = "undefined";
handler["vlc"]["end"] = "undefined";
handler["vlc"]["zoomin"] = "undefined";
handler["vlc"]["zoomout"] = "undefined";
handler["vlc"]["download"] = "undefined";
handler["vlc"]["counterclockwise"] = "undefined";
handler["vlc"]["clockwise"] = "undefined";
// Handler for shared desktops (VNC).
handler["vnc"] = {};
handler["vnc"]["up"] = "Up";
handler["vnc"]["down"] = "Down";
handler["vnc"]["left"] = "Left";
handler["vnc"]["right"] = "Right";
handler["vnc"]["next"] = "undefined";
handler["vnc"]["prior"] = "undefined";
handler["vnc"]["home"] = "undefined";
handler["vnc"]["end"] = "undefined";
handler["vnc"]["zoomin"] = "plus";
handler["vnc"]["zoomout"] = "minus";
handler["vnc"]["download"] = "undefined";
handler["vnc"]["counterclockwise"] = "undefined";
handler["vnc"]["clockwise"] = "undefined";
// Handler for PDF documents.
handler["zathura"] = {};
handler["zathura"]["up"] = "Up";
handler["zathura"]["down"] = "Down";
handler["zathura"]["left"] = "Left";
handler["zathura"]["right"] = "Right";
handler["zathura"]["next"] = "Next";
handler["zathura"]["prior"] = "Prior";
handler["zathura"]["home"] = "Home";
handler["zathura"]["end"] = "End";
handler["zathura"]["zoomin"] = "plus";
handler["zathura"]["zoomout"] = "minus";
handler["zathura"]["download"] = "download";
handler["zathura"]["counterclockwise"] = "undefined";
handler["zathura"]["clockwise"] = "undefined";
var send_keys = handler["default"]["up"];
if (typeof(handler[handle]) !== "undefined") {
send_keys = handler[handle][task];
}
// console.log(send_keys);
return send_keys;
}
Dropzone.options.palmaDropzone = {
init: function() {
this.on("complete", function() {
if (this.getQueuedFiles().length == 0 && this.getUploadingFiles().length == 0) {
// File finished uploading, and there aren't any left in the queue.
// console.log("File(s) uploaded");
setTimeout(function() {
location.reload();
}, 1);
// location.reload(); // verlangt Eingabe von Enter zum wiederholten Schicken der Daten
}
});
}
};
function updateUserList(address, user) {
// Update the user list on screen from the table in the database.
// Get the <tbody> element which contains the user entries.
var list = document.getElementById('userlist');
// First we remove all existing <tr> elements.
while (list.firstChild) {
list.removeChild(list.firstChild);
}
if (address.length > 0) {
// Add an entry for each user. Iterate over addresses:
// One user may be connected several times with different devices.
// We don't expect more than one user from the same device.
var m;
for (m = 0; m < address.length; m++) {
var n;
for (n = 0; n < user.length; n++) {
if (address[m].userid == user[n].userid) {
break;
}
}
var device = address[m].device;
var tr = document.createElement('tr');
var td = document.createElement('td');
var i = document.createElement('i');
i.setAttribute('class', 'fa fa-fw fa-' + device);
td.appendChild(i);
td.appendChild(document.createTextNode(user[n].name));
tr.appendChild(td);
list.appendChild(tr);
}
} else {
<?php
if ($user) {
?>
// All users were disconnected.
alert("<?=__('You were disconnected!')?>");
window.location = 'logout.php';
<?php
} else {
?>
// If there is no user, we display an empty entry.
var tr = document.createElement('tr');
var td = document.createElement('td');
td.appendChild(document.createTextNode("\u00a0"));
tr.appendChild(td);
list.appendChild(tr);
<?php
}
?>
}
}
function addWindowPosition(layout, screensection) {
var position = document.createElement("div");
position.setAttribute("class", "position " + layout);
position.setAttribute('title', '<?=str_replace("'", "\\'", __("Select screen section for display"))?>');
var s;
var button;
var icon;
var br;
switch (layout) {
case 'g1x1':
s = 1;
break;
case 'g1x2':
s = 2;
break;
case 'g2x1':
s = 2;
break;
case 'g1a2':
s = 3;
var layout_left = document.createElement('div');
layout_left.setAttribute("class", "layout_left");
var layout_right = document.createElement('div');
layout_right.setAttribute("class", "layout_right");
break;
case 'g2x2':
s = 4;
break;
}
for (var n = 1; n <= s; n++) {
br = '';
button = document.createElement("button");
button.setAttribute('value', n);
if (n == screensection) {
button.setAttribute("class", "selected");
}
button.setAttribute('onclick', "sendToNuc('switchWindows=TRUE&before=" + screensection + "&after='+(this.value))");
icon = document.createElement("i");
if (s == 1) {
icon.setAttribute("class", "fa fa-desktop fa-2x");
} else {
icon.setAttribute("class", "fa fa-desktop fa-1x");
}
button.appendChild(icon);
if ((layout == 'g1x2' && n == 1) || ((layout == 'g1a2' || layout == 'g2x2') && n == 2 )) {
br = document.createElement("br");
}
if (layout == 'g1a2' && n == 1) {
layout_left.appendChild(button);
} else if (layout == 'g1a2' && n > 1) {
layout_right.appendChild(button);
if (br) {
layout_right.appendChild(br);
}
} else {
position.appendChild(button);
if (br) {
position.appendChild(br);
}
}
}
if (layout == 'g1a2') {
position.appendChild(layout_left);
position.appendChild(layout_right);
}
return position;
}
function addWindowControls(layout, controls, screensection, file, status) {
var control = controls[screensection];
if (typeof control == "undefined") {
control = ["default", false, false, false, false,
false, false, false, false, false, false, false];
}
// get handler
var handler = control[0];
// up down left right zoomin zoomout home end prior next download
var up = control[1];
var down = control[2];
var left = control[3];
var right = control[4];
var zoomin = control[5];
var zoomout = control[6];
var home = control[7];
var end = control[8];
var prior = control[9];
var next = control[10];
var download = control[11];
var counterclockwise = control[12];
var clockwise = control[13];
var windowcontrols = document.createElement("div");
windowcontrols.setAttribute("class", "windowcontrols");
var topbar = document.createElement("div");
topbar.setAttribute("class", "topbar");
var button = document.createElement('button');
button.setAttribute("class", "toggle");
icon = document.createElement('i');
if (status == 'active') {
icon.setAttribute("class", "fa fa-eye");
} else {
icon.setAttribute("class", "fa fa-eye-slash");
}
icon.setAttribute('id', 'status_' + screensection);
button.setAttribute('title', '<?=__("Toggle visibility")?>');
button.setAttribute('onclick', "sendToNuc('window=" + screensection + "&toggle=TRUE')");
button.appendChild(icon);
topbar.appendChild(button);
topbar.appendChild(keyControl(screensection, 'fa fa-search-plus', 'zoomin', 'zoomin', handler, !zoomin, '<?=__("Zoom in")?>'));
topbar.appendChild(keyControl(screensection, 'fa fa-search-minus', 'zoomout', 'zoomout', handler, !zoomout, '<?=__("Zoom out")?>'));
topbar.appendChild(keyControl(screensection, 'fa fa-rotate-left', 'counterclockwise', 'counterclockwise', handler, !counterclockwise, '<?=__("Rotate counterclockwise")?>'));
topbar.appendChild(keyControl(screensection, 'fa fa-rotate-right', 'clockwise', 'clockwise', handler, !clockwise, '<?=__("Rotate clockwise")?>'));
var downloadbutton = keyControl(screensection, 'fa fa-download', 'download', 'download', handler, !download, '<?=__("Download this item")?>');
downloadbutton.setAttribute('onclick', 'downloadFile(' + screensection + ')');
topbar.appendChild(downloadbutton);
button = document.createElement('button');
button.setAttribute("class", "trash");
button.setAttribute('onclick', "sendToNuc('window=" + screensection + "&delete=" + file + "')");
button.setAttribute('title', '<?=__("Remove this item")?>');
icon = document.createElement('i');
icon.setAttribute("class", "fa fa-trash-o");
button.appendChild(icon);
topbar.appendChild(button);
var movement = document.createElement("div");
movement.setAttribute("class", "movement");
var jump = document.createElement("div");
jump.setAttribute("class", "jump");
jump.appendChild(keyControl(screensection, 'fa fa-angle-double-up', 'jumpbeginning', 'home', handler, !home, '<?=__("Jump to start")?>'));
jump.appendChild(keyControl(screensection, 'fa fa-angle-up', 'pageback', 'prior', handler, !prior, '<?=__("Page up")?>'));
jump.appendChild(keyControl(screensection, 'fa fa-angle-down', 'pageforward', 'next', handler, !next, '<?=__("Page down")?>'));
jump.appendChild(keyControl(screensection, 'fa fa-angle-double-down', 'jumpend', 'end', handler, !end, '<?=__("Jump to end")?>'));
var arrows = document.createElement("div");
arrows.setAttribute("class", "arrows");
arrows.appendChild(keyControl(screensection, 'fa fa-toggle-up', 'arrowup', 'up', handler, !up, '<?=__("Up")?>'));
arrows.appendChild(document.createElement("br"));
arrows.appendChild(keyControl(screensection, 'fa fa-toggle-left', 'arrowleft', 'left', handler, !left, '<?=__("Left")?>'));
arrows.appendChild(keyControl(screensection, 'fa fa-toggle-right', 'arrowright', 'right', handler, !right, '<?=__("Right")?>'));
arrows.appendChild(document.createElement("br"));
arrows.appendChild(keyControl(screensection, 'fa fa-toggle-down', 'arrowdown', 'down', handler, !down, '<?=__("Down")?>'));
movement.appendChild(jump);
movement.appendChild(arrows);
var position = addWindowPosition(layout, screensection);
// Putting it all together
windowcontrols.appendChild(topbar);
windowcontrols.appendChild(movement);
windowcontrols.appendChild(position);
return windowcontrols;
}
function updateWindowList(window){
var windowlist = document.getElementById('windowlist');
// remove old entries
while (windowlist.firstChild) {
windowlist.removeChild(windowlist.firstChild);
}
if (window.length == 0) {
var entry = document.createElement('div');
entry.setAttribute("class", "description");
entry.appendChild(document.createTextNode('<?=__('Welcome')?>, <?=$username?>!'));
entry.appendChild(document.createElement("br"));
entry.appendChild(document.createTextNode('<?=__('There is no shared content yet. Click below to get started!')?>'));
var addbutton = document.createElement('button');
addbutton.setAttribute("class", "splash_add pure-button");
addbutton.setAttribute("onclick", "openTab(event, 'Add')");
var addtext = (document.createTextNode('<?=__("Add")?>'));
addbutton.appendChild(addtext);
var addicon = document.createElement("i");
addicon.setAttribute("class", "fa fa-plus");
addbutton.appendChild(addicon);
windowlist.appendChild(entry);
windowlist.appendChild(addbutton);
document.getElementById("closeWindows").style.display = "none";
document.getElementById("Layout").style.display = "none";
document.getElementById("controlbtn").className = "tablinks";
} else {
document.getElementById("closeWindows").style.display = "inline-block";
document.getElementById("Layout").style.display = "block";
document.getElementById("controlbtn").className = "tablinks active";
// Add an entry for each window.
var n;
for (n = 0; n < window.length; n++) {
var file = window[n].file;
var handler = window[n].handler;
var screensection = window[n].section;
var entry = document.createElement('div');
entry.setAttribute("class", "window_entry");
var divID = 'file' + screensection;
entry.setAttribute('id', divID);
var button = document.createElement('button');
button.setAttribute("class", "window_entry_button");
button.setAttribute('onclick', "openAccordion('" + divID + "')");
var icon = document.createElement('i');
if (handler.indexOf("midori") > -1) {
icon.setAttribute("class", "fa fa-globe");
} else if (handler.indexOf("vnc") > -1) {
icon.setAttribute("class", "fa fa-video-camera");
} else if (handler.indexOf("vlc") > -1) {
icon.setAttribute("class", "fa fa-film");
} else if (handler.indexOf("feh") > -1) {
icon.setAttribute("class", "fa fa-picture-o");
} else if (handler.indexOf("zathura") > -1) {
icon.setAttribute("class", "fa fa-file-pdf-o");
} else {
icon.setAttribute("class", "fa fa-file");
}
button.appendChild(icon);
var title = decodeURI(decodeURIComponent(file));
// display only the last part of the URL or file name.
// Long names are truncated, and the truncation is indicated.
if (title.substring(0, 4) == 'http') {
// Remove a terminating slash from an URL.
// The full URL will be shown as a tooltip.
title = title.replace(/\/$/, '');
title = title.replace(/^.*\//, '');
entry.setAttribute('title', file);
} else {
// For files only the full base name is shown as a tooltip.
var fname = file;
title = title.replace(/^.*\//, '');
entry.setAttribute('title', fname);
}
if (title.length > 25) {
title = title.substring(0, 25) + '...';
}
button.appendChild(document.createTextNode(title));
var icon = document.createElement('i');
icon.setAttribute("class", "fa fa-caret-down accordion-icon");
button.appendChild(icon);
entry.appendChild(button);
windowlist.appendChild(entry);
}
}
}
function updateControlsBySection(window) {
// get section and handler for each window
var sectionControls = [];
for (n = 0; n < window.length; n++) {
var win_id = window[n].win_id;
var section = window[n].section;
var handler = window[n].handler;
// alert("Section: " + section + " - Handler: " + handler);
if (handler.indexOf("feh") > -1) {
// up down left right zoomin zoomout home end prior next download rotateleft rotateright
control = ["feh", true, true, true, true, true, true, false, false, false, false, true, true, true];
} else if (handler.indexOf("libreoffice") > -1) {
// Controls in LibreOffice: no zoom in calc and writer, has to be activated first
// by pressing <Ctrl+Shift+o> (switch view mode on/off) not implemented yet
control = ["libreoffice", true, true, true, true, false, false, false, false, true, true, true, false, false];
if (handler.indexOf("--calc") > -1) {
control = ["libreoffice-calc", true, true, true, true, false, false, true, true, true, true, true, false, false];
}
if (handler.indexOf("--impress") > -1) {
control = ["libreoffice-impress", true, true, true, true, true, true, true, true, true, true, true, false, false];
}
if (handler.indexOf("--writer") > -1) {
control = ["libreoffice-writer", true, true, true, true, false, false, false, false, true, true, true, false, false];
}
} else if (handler.indexOf("midori") > -1) {
control = ["midori", true, true, true, true, true, true, true, true, true, true, false, false, false];
} else if (handler.indexOf("vlc") > -1) {
control = ["vlc", false, false, false, true, false, false, false, false, false, false, false, false, false];
} else if (handler.indexOf("vnc") > -1) {
control = ["vnc", true, true, true, true, true, true, false, false, false, false, false, false, false];
} else if (handler.indexOf("zathura") > -1) {
control = ["zathura", true, true, true, true, true, true, true, true, true, true, true, false, false];
} else {
control = ["undefined", false, false, false, false, false, false, false, false, false, false, false, false, false];
}
sectionControls[section] = control;
}
// Fill empty sections with default values.
for (i = sectionControls.length; i < 5; i++) {
sectionControls[i] = ["default",
false, false, false, false,
false, false, false, false,
false, false, false, false, false];
}
return sectionControls;
}
function updateScreen() {
sendToNuc('window=all&closeOrphans=true');
}
function clearURLField(defaultText) {
var browseto = document.getElementById('url_field');
browseto.setAttribute('value', 'http://');
}
// lastJSON is used to reduce the database polling rate.
var lastJSON = '';
function pollDatabase() {
var xmlHttp = new XMLHttpRequest();
if (xmlHttp) {
xmlHttp.open("get", 'db.php?json=' + lastJSON, true);
xmlHttp.onreadystatechange = function () {
if (xmlHttp.readyState == 2) {
// Data transferred to server.
} else if (xmlHttp.readyState == 3) {
// Server is answering.
} else if (xmlHttp.readyState == 4) {
// Received all data from server.
var status = xmlHttp.status;
if (status == 200) {
// Got valid response.
var text = xmlHttp.responseText;
lastJSON = text;
var db = JSON.parse(text);
var i;
var layout = '';
for (i = 0; i < db.setting.length; i++) {
if (db.setting[i].key == 'layout') {
layout = db.setting[i].value;
break;
}
}
var controls = updateControlsBySection(db.window);
// for (i = 0; i < controls.length; i++) {
// console.log(i + ": " + controls[i]);
// }
updateUserList(db.address, db.user);
updateWindowList(db.window);
showLayout(layout, controls, db.window);
// updateScreen(db.window);
setTimeout("pollDatabase()", 1);
} else {
// Got error. TODO: handle it.
}
} else {
// Got unexpected xmlHttp.readyState. TODO: handle it.
}
};
xmlHttp.send(null);
}
}
// Start polling the database.
pollDatabase();
function getOS() {
var OSName="Unknown OS";
if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";
if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";
if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";
if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";
if (navigator.userAgent.indexOf("Android")!=-1) OSName="Android";
if ((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)) || (navigator.userAgent.match(/iPad/i))) OSName="iOS";
/* Source for Android and iOS:
https://davidwalsh.name/detect-android
https://davidwalsh.name/detect-iphone
https://davidwalsh.name/detect-ipad */
return OSName;
}
function getFilePathByOS() {
var OSName = getOS();
var windows = 'download-winvnc';
var macOS = 'download-macvnc';
var linux = 'download-linux';
var download = '';
switch(OSName) {
case 'Windows': download = windows;
break;
case 'MacOS': download = macOS;
break;
case 'Linux': download = linux;
break;
case 'UNIX': download = linux;
break;
case 'Android':
case 'iOS':
document.getElementById("Screen").innerHTML = '<div class="description"><?=__('Sorry! Screensharing for your device is currently not supported.')?></div>';
break;
default: download = null;
}
document.getElementById(download).click();
}
function openTab(evt, tabName) {
var i, tabcontent, tablinks;
// Hide all elements with class="tabcontent"
tabcontent = document.getElementsByClassName("tabcontent");
for (i = 0; i < tabcontent.length; i++) {
tabcontent[i].style.display = "none";
}
// Remove "active" class from all elements with class="tablinks"
tablinks = document.getElementsByClassName("tablinks");
for (i = 0; i < tablinks.length; i++) {
tablinks[i].className = tablinks[i].className.replace(" active", "");
}
// Show current tab and add "active" class to the opening button