minimal-examples/http-server/minimal-http-server-generic-sessions/mount-origin/lws-common.js

   1 /*
   2  * This section around grayOut came from here:
   3  * http://www.codingforums.com/archive/index.php/t-151720.html
   4  * Assumed public domain
   5  *
   6  * Init like this in your main html script, this also reapplies the gray
   7  *
   8  *    lws_gray_out(true,{'zindex':'499'});
   9  *
  10  * To remove the gray
  11  *
  12  *    lws_gray_out(false);
  13  *
  14  */
  15
  16 function gsize(ptype)
  17 {
  18         var h = document.compatMode === "CSS1Compat" &&
  19                 !window.opera ?
  20                         document.documentElement.clientHeight :
  21                                                 document.body.clientHeight;
  22         var w = document.compatMode === "CSS1Compat" &&
  23                 !window.opera ?
  24                         document.documentElement.clientWidth :
  25                                                 document.body.clientWidth;
  26         var pageWidth, pageHeight, t;
  27
  28         if (document.body &&
  29                     (document.body.scrollWidth || document.body.scrollHeight)) {
  30                 t = document.body.scrollWidth;
  31                 pageWidth = (w > t) ? ("" + w + "px") : ("" + (t) + "px");
  32                 t = document.body.scrollHeight;
  33                 pageHeight = (h > t) ? ("" + h + "px") : ("" + (t) + "px");
  34         } else if (document.body.offsetWidth) {
  35                 t = document.body.offsetWidth;
  36                 pageWidth = (w > t) ? ("" + w + "px") : ("" + (t) + "px");
  37                 t = document.body.offsetHeight;
  38                 pageHeight =(h > t) ? ("" + h + "px") : ("" + (t) + "px");
  39         } else {
  40                 pageWidth = "100%";
  41                 pageHeight = "100%";
  42         }
  43         return (ptype === 1) ? pageWidth : pageHeight;
  44 }
  45
  46 function addEvent( obj, type, fn ) {
  47         if ( obj.attachEvent ) {
  48                 obj["e" + type + fn] = fn;
  49                 obj[type+fn] = function() { obj["e" + type + fn]( window.event );};
  50                 obj.attachEvent("on" + type, obj[type + fn]);
  51         } else
  52                 obj.addEventListener(type, fn, false);
  53 }
  54
  55 function removeEvent( obj, type, fn ) {
  56         if ( obj.detachEvent ) {
  57                 obj.detachEvent("on" + type, obj[type + fn]);
  58                 obj[type + fn] = null;
  59         } else
  60                 obj.removeEventListener(type, fn, false);
  61 }
  62
  63 function lws_gray_out(vis, _options) {
  64
  65         var options = _options || {};
  66         var zindex = options.zindex || 50;
  67         var opacity = options.opacity || 70;
  68         var opaque = (opacity / 100);
  69         var bgcolor = options.bgcolor || "#000000";
  70         var dark = document.getElementById("darkenScreenObject");
  71
  72         if (!dark) {
  73                 var tbody = document.getElementsByTagName("body")[0];
  74                 var tnode = document.createElement("div");
  75                 tnode.style.position = "absolute";
  76                 tnode.style.top = "0px";
  77                 tnode.style.left = "0px";
  78                 tnode.style.overflow = "hidden";
  79                 tnode.style.display ="none";
  80                 tnode.id = "darkenScreenObject";
  81                 tbody.appendChild(tnode);
  82                 dark = document.getElementById("darkenScreenObject");
  83         }
  84         if (vis) {
  85                 dark.style.opacity = opaque;
  86                 dark.style.MozOpacity = opaque;
  87                 // dark.style.filter ='alpha(opacity='+opacity+')';
  88                 dark.style.zIndex = zindex;
  89                 dark.style.backgroundColor = bgcolor;
  90                 dark.style.width = gsize(1);
  91                 dark.style.height = gsize(0);
  92                 dark.style.display = "block";
  93                 addEvent(window, "resize",
  94                         function() {
  95                                 dark.style.height = gsize(0);
  96                                 dark.style.width = gsize(1);
  97                         }
  98                 );
  99         } else {
 100                 dark.style.display = "none";
 101                 removeEvent(window, "resize",
 102                         function() {
 103                                 dark.style.height = gsize(0);
 104                                 dark.style.width = gsize(1);
 105                         }
 106                 );
 107         }
 108 }
 109
 110 /*
 111  * end of grayOut related stuff
 112  */
 113
 114 function new_ws(urlpath, protocol)
 115 {
 116         if (typeof MozWebSocket != "undefined")
 117                 return new MozWebSocket(urlpath, protocol);
 118
 119         return new WebSocket(urlpath, protocol);
 120 }
 121
 122 function lws_san(s)
 123 {
 124         if (s.search("<") !== -1)
 125                 return "invalid string";
 126
 127         return s;
 128 }