2 /* ***** BEGIN LICENSE BLOCK *****
3 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 * The contents of this file are subject to the Mozilla Public License Version
6 * 1.1 (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 * http://www.mozilla.org/MPL/
10 * Software distributed under the License is distributed on an "AS IS" basis,
11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12 * for the specific language governing rights and limitations under the
15 * The Original Code is guacamole-common-js.
17 * The Initial Developer of the Original Code is
19 * Portions created by the Initial Developer are Copyright (C) 2010
20 * the Initial Developer. All Rights Reserved.
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
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30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
36 * ***** END LICENSE BLOCK ***** */
38 // Guacamole namespace
39 var Guacamole = Guacamole || {};
42 * Dynamic on-screen keyboard. Given the URL to an XML keyboard layout file,
43 * this object will download and use the XML to construct a clickable on-screen
44 * keyboard with its own key events.
47 * @param {String} url The URL of an XML keyboard layout file.
49 Guacamole.OnScreenKeyboard = function(url) {
51 // For each child of element, call handler defined in next
52 function parseChildren(element, next) {
54 var children = element.childNodes;
55 for (var i=0; i<children.length; i++) {
58 var child = children[i];
60 // Do not parse text nodes
64 // Get handler for node
65 var handler = next[child.tagName];
67 // Call handler if defined
71 // Throw exception if no handler
74 "Unexpected " + child.tagName
75 + " within " + element.tagName
83 var keyboard = document.createElement("div");
84 keyboard.className = "keyboard";
86 // Retrieve keyboard XML
87 var xmlhttprequest = new XMLHttpRequest();
88 xmlhttprequest.open("GET", url, false);
89 xmlhttprequest.send(null);
91 var xml = xmlhttprequest.responseXML;
95 function parse_row(e) {
97 var row = document.createElement("div");
98 row.className = "row";
102 "column": function(e) {
103 row.appendChild(parse_column(e));
106 "gap": function parse_gap(e) {
109 var gap_size = e.attributes["size"];
112 var gap = document.createElement("div");
113 gap.className = "gap";
114 gap.textContent = " ";
117 gap.style.width = gap.style.height =
118 parseFloat(gap_size.value) + "em";
120 row.appendChild(gap);
124 "key": function parse_key(e) {
127 var key_size = e.attributes["size"];
130 var key = document.createElement("div");
131 key.className = "key";
132 key.textContent = "K";
135 "cap": function cap(e) {
138 var required = e.attributes["if"];
139 var modifier = e.attributes["modifier"];
140 var keysym = e.attributes["keysym"];
141 var sticky = e.attributes["sticky"];
143 // Get content of key cap
144 var content = e.textContent;
146 // If no requirements, then show cap by default
148 key.textContent = content;
154 row.appendChild(key);
164 function parse_column(e) {
166 var col = document.createElement("div");
167 col.className = "col";
169 var align = col.attributes["align"];
172 col.style.textAlign = align.value;
174 // Columns can only contain rows
177 col.appendChild(parse_row(e));
187 var keyboard_element = xml.documentElement;
188 if (keyboard_element.tagName != "keyboard")
189 throw new Error("Root element must be keyboard");
192 var keyboard_size = keyboard_element.attributes["size"];
194 parseChildren(keyboard_element, {
197 keyboard.appendChild(parse_row(e));
200 "column": function(e) {
201 keyboard.appendChild(parse_column(e));
208 // Do not allow selection or mouse movement to propagate/register.
209 keyboard.onselectstart =
210 keyboard.onmousemove =
212 keyboard.onmousedown =
219 this.onkeypressed = null;
220 this.onkeyreleased = null;
222 this.getElement = function() {
228 Guacamole.OnScreenKeyboard.Key = function() {
231 * Width of the key, relative to the size of the keyboard.
236 * Whether this key is currently pressed.
238 this.pressed = false;
241 * An associative map of all caps by modifier.
247 Guacamole.OnScreenKeyboard.Cap = function(text, keycode, modifier) {
250 * Modifier represented by this keycap
255 * The text to be displayed within this keycap
260 * The keycode this cap sends when its associated key is pressed/released
262 this.keycode = keycode;
264 // Set modifier if provided
265 if (modifier) this.modifier = modifier;