add ShowOff Client for communicating with a ShowOff node server.

see github.com/technoweenie/showoff-server

public/js/jquery.cookie.js

@@ -0,0 +1,96 @@
+/**
+ * Cookie plugin
+ *
+ * Copyright (c) 2006 Klaus Hartl (stilbuero.de)
+ * Dual licensed under the MIT and GPL licenses:
+ * http://www.opensource.org/licenses/mit-license.php
+ * http://www.gnu.org/licenses/gpl.html
+ *
+ */
+
+/**
+ * Create a cookie with the given name and value and other optional parameters.
+ *
+ * @example $.cookie('the_cookie', 'the_value');
+ * @desc Set the value of a cookie.
+ * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
+ * @desc Create a cookie with all available options.
+ * @example $.cookie('the_cookie', 'the_value');
+ * @desc Create a session cookie.
+ * @example $.cookie('the_cookie', null);
+ * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
+ *       used when the cookie was set.
+ *
+ * @param String name The name of the cookie.
+ * @param String value The value of the cookie.
+ * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
+ * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
+ *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
+ *                             If set to null or omitted, the cookie will be a session cookie and will not be retained
+ *                             when the the browser exits.
+ * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
+ * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
+ * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
+ *                        require a secure protocol (like HTTPS).
+ * @type undefined
+ *
+ * @name $.cookie
+ * @cat Plugins/Cookie
+ * @author Klaus Hartl/klaus.hartl@stilbuero.de
+ */
+
+/**
+ * Get the value of a cookie with the given name.
+ *
+ * @example $.cookie('the_cookie');
+ * @desc Get the value of a cookie.
+ *
+ * @param String name The name of the cookie.
+ * @return The value of the cookie.
+ * @type String
+ *
+ * @name $.cookie
+ * @cat Plugins/Cookie
+ * @author Klaus Hartl/klaus.hartl@stilbuero.de
+ */
+jQuery.cookie = function(name, value, options) {
+    if (typeof value != 'undefined') { // name and value given, set cookie
+        options = options || {};
+        if (value === null) {
+            value = '';
+            options.expires = -1;
+        }
+        var expires = '';
+        if (options.expires && (typeof options.expires == 'number' || options.expires.toUTCString)) {
+            var date;
+            if (typeof options.expires == 'number') {
+                date = new Date();
+                date.setTime(date.getTime() + (options.expires * 24 * 60 * 60 * 1000));
+            } else {
+                date = options.expires;
+            }
+            expires = '; expires=' + date.toUTCString(); // use expires attribute, max-age is not supported by IE
+        }
+        // CAUTION: Needed to parenthesize options.path and options.domain
+        // in the following expressions, otherwise they evaluate to undefined
+        // in the packed version for some reason...
+        var path = options.path ? '; path=' + (options.path) : '';
+        var domain = options.domain ? '; domain=' + (options.domain) : '';
+        var secure = options.secure ? '; secure' : '';
+        document.cookie = [name, '=', encodeURIComponent(value), expires, path, domain, secure].join('');
+    } else { // only name given, get cookie
+        var cookieValue = null;
+        if (document.cookie && document.cookie != '') {
+            var cookies = document.cookie.split(';');
+            for (var i = 0; i < cookies.length; i++) {
+                var cookie = jQuery.trim(cookies[i]);
+                // Does this cookie string begin with the name we want?
+                if (cookie.substring(0, name.length + 1) == (name + '=')) {
+                    cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
+                    break;
+                }
+            }
+        }
+        return cookieValue;
+    }
+};

public/js/jquery.uuid.js

@@ -0,0 +1,24 @@
+/*
+Usage 1: define the default prefix by using an object with the property prefix as a parameter which contains a string value; {prefix: 'id'}
+Usage 2: call the function jQuery.uuid() with a string parameter p to be used as a prefix to generate a random uuid;
+Usage 3: call the function jQuery.uuid() with no parameters to generate a uuid with the default prefix; defaul prefix: '' (empty string)
+*/
+
+/*
+Generate fragment of random numbers
+*/
+jQuery._uuid_default_prefix = '';
+jQuery._uuidlet = function () {
+	return(((1+Math.random())*0x10000)|0).toString(16).substring(1);
+};
+/*
+Generates random uuid
+*/
+jQuery.uuid = function (p) {
+	if (typeof(p) == 'object' && typeof(p.prefix) == 'string') {
+		jQuery._uuid_default_prefix = p.prefix;
+	} else {
+		p = p || jQuery._uuid_default_prefix || '';
+		return(p+jQuery._uuidlet()+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+"-"+jQuery._uuidlet()+jQuery._uuidlet()+jQuery._uuidlet());
+	};
+};

public/js/showoff.client.js

@@ -0,0 +1,80 @@
+//alert($.uuid('c-'))
+//alert($.uuid('p-'))
+//$.ws.conn({
+//  url : 'ws://localhost:3840/connect?to=master&id=client',
+//  onopen : function () {
+//    console.log('connected');
+//  },
+//  onmessage : function (data) {
+//    console.log("received: " + data)
+//    if(data == 'next') {
+//      nextStep()
+//    } else if(data == 'prev') {
+//      prevStep()
+//    } else if(data.match(/^\d+$/)) {
+//      gotoSlide(data)
+//    }
+//  },
+//  onclose : function (event) {
+//    console.log('disconnected');
+//  }
+//})
+
+(function($) {
+  var client = ShowOff.Client = function() {
+    this.id = $.cookie('showoff-client-id')
+    if(!this.id) {
+      this.id = $.uuid('c-')
+      $.cookie('showoff-client-id', this.id)
+    }
+    this.master    = false;
+  }
+
+  // a no-op until the client is connected
+  client.send = client.sendToClients = function() {}
+
+  client.create = function() {
+    ShowOff.Client = new ShowOff.Client();
+    return ShowOff.Client;
+  }
+
+  client.prototype.watchPresentation = function(host, port, presentationId) {
+    var url = 'ws://' + host + ':' + port + '/connect?to=' + presentationId + '&id=' + this.id;
+    var cli = this;
+    this.socket = $.ws.conn({
+      url : url,
+      onmessage : this.onMessage,
+      onopen : function () {
+        console.log('connected to ' + url);
+      },
+      onclose : function () {
+        console.log('disconnected');
+      }
+    })
+  }
+
+  client.prototype.onMessage = function(data) {
+    var cli = ShowOff.Client;
+    console.log("recd: " + data)
+    switch(data) {
+      case 'master':
+        cli.master = true;
+        break;
+      case 'next':
+        nextStep();
+        break;
+      default:
+        if(data.match(/^\d+$/))
+          gotoSlide(data);
+    }
+  }
+
+  client.prototype.sendToClients = function(data) {
+    if(!this.master) return
+    this.send(data)
+  }
+
+  client.prototype.send = function(data) {
+    this.socket.send(data);
+  }
+})(jQuery)

public/js/showoff.js

@@ -1,5 +1,7 @@
 /* ShowOff JS Logic */
 
+var ShowOff = {};
+
 var preso_started = false
 var slidenum = 0
 var slideTotal = 0
@@ -112,6 +114,7 @@ function showSlide(back_step) {
   }
 
   removeResults()
+  ShowOff.Client.sendToClients(slidenum)
 }
 
 function getSlidePercent()
@@ -155,6 +158,7 @@ function nextStep()
       incrElem.eq(incrCurr).show()
     }
     incrCurr++
+    ShowOff.Client.sendToClients('next')
   }
 }
 

views/index.erb

@@ -10,13 +10,16 @@
 	<link rel="stylesheet" href="css/showoff.css" type="text/css"/>
 
 	<script type="text/javascript" src="/js/jquery-1.4.min.js"></script>
-	<script type="text/javascript" src="/js/jquery-print.js"></script>	
-  <script type="text/javascript" src="/js/fg.menu.js"></script> 
+	<script type="text/javascript" src="/js/jquery-print.js"></script>
+  <script type="text/javascript" src="/js/jquery.uuid.js"></script>
+  <script type="text/javascript" src="/js/jquery.cookie.js"></script>
+  <script type="text/javascript" src="/js/jquery.ws-0.3pre.js"></script>
+  <script type="text/javascript" src="/js/fg.menu.js"></script>
 	<script type="text/javascript" src="/js/showoff.js"></script>
+	<script type="text/javascript" src="/js/showoff.client.js"></script>
   <script type="text/javascript" src="/js/jTypeWriter.js"> </script>
 
   <script type="text/javascript" src="/js/sh_main.min.js"></script>
-  <script type="text/javascript" src="/js/jquery.ws-0.3pre.js"></script>
 
   <link type="text/css" href="/css/fg.menu.css" media="screen" rel="stylesheet" /> 
   <link type="text/css" href="/css/theme/ui.all.css" media="screen" rel="stylesheet" />