skins/ajax_scripts/root_handlers.js

   1 // © Benoît PIN 2006-2009
   2 // http://plinn.org
   3 // Licence GPL
   4 //
   5 //
   6
   7 /* Ajax for everything : if an click event has not been intercepted before */
   8
   9 var AjaxLinkHandler;
  10
  11 (function(){
  12
  13 var reProtocol = /^\s*[a-z]+:/;
  14
  15 AjaxLinkHandler = function(locationPollInterval) {
  16         var thisHandler = this;
  17         this.previousHash = '#' + location.href;
  18         location.hash = location.href;
  19         setInterval(function(){thisHandler.checkLocation();}, locationPollInterval)
  20         addListener(document.body, 'click', function(evt){thisHandler.handleClick(evt);});
  21         if (browser.isIE55 || browser.isIE6up) {
  22                 var ie_historyFrm = document.createElement('iframe');
  23                 ie_historyFrm.setAttribute('src', portal_url() + '/scrape_ie_history');
  24                 with (ie_historyFrm.style) {
  25                         border="0";
  26                         width="1px";
  27                         height="1px";
  28                         position="absolute";
  29                         bottom="0";
  30                         right="0";
  31                         visibility="visible";
  32                 }
  33                 document.body.appendChild(ie_historyFrm);
  34                 this.historyFrame = ie_historyFrm;
  35         }
  36 };
  37
  38 AjaxLinkHandler.prototype.checkLocation = function() {
  39         if ((this.previousHash != location.hash) && location.hash) {
  40                 var rawUrl = unescape(location.hash.slice(1));
  41
  42                 var urlHash = rawUrl.split('#');
  43                 var url = urlHash[0];
  44                 var hash = urlHash[1];
  45
  46                 var ajaxParams='ajax=1&_browserObjectUrl=' + escape(absolute_url());
  47                 var urlQueryStart = url.indexOf('?');
  48                 if (urlQueryStart != -1)
  49                         url += '&' + ajaxParams;
  50                 else
  51                         url += '?' + ajaxParams;
  52
  53                 try {
  54                         var fi = new FragmentImporter(url);
  55                         if (hash) {
  56                                 var thisHandler = this;
  57                                 fi.onAfterPopulate = function(){thisHandler.loadHash('#' + hash);};
  58                         }
  59                         fi.load(rawUrl);
  60                 }
  61                 catch (e) {
  62                         window.location.href = rawUrl;
  63                 }
  64         }
  65         this.previousHash = location.hash;
  66 };
  67
  68 AjaxLinkHandler.prototype.handleClick = function(evt){
  69         var target = getTargetedObject(evt);
  70         while (target.nodeName != 'A') {
  71                 target = target.parentNode;
  72                 if (target == document.body)
  73                         return;
  74         }
  75         target.blur();
  76         // prevent click glitches from IE :((
  77         if (browser.isIE55 || browser.isIE6up) {
  78                 if (_disableRootClickHandler)
  79                         return;
  80                 else {
  81                         _disableRootClickHandler = true;
  82                         setTimeout("_disableRootClickHandler=false", 100);
  83                 }
  84         }
  85
  86         if (target.target)
  87                 return;
  88
  89         var url;
  90         var m = reProtocol.exec(target.getAttribute('href', 2));
  91         if (m) {
  92                 var protocol = m[0];
  93                 if (protocol == location.protocol)
  94                         url = target.href;
  95                 else
  96                         return;
  97         }
  98         else
  99                 url = absolute_url() + '/' + target.getAttribute('href', 2);
 100
 101         if (!url) return;
 102
 103         if (browser.isGecko)
 104                 url = encodeURIComponent(url);
 105         var query = target.search;
 106         if ((query && query.search("noajax=1") != -1) || target.name == 'noajax')
 107                 return;
 108
 109         disableDefault(evt);
 110         this.loadUrl(url);
 111 };
 112
 113 if (browser.isIE55 || browser.isIE6up) {
 114         AjaxLinkHandler.prototype.loadUrl = function(url) {
 115                 if (location.hash.slice(1) == url)
 116                         url += '#'
 117                 this.historyFrame.contentWindow.location.search = '?url=' + escape(url);
 118                 location.hash = escape(url);
 119         };
 120 }
 121 else {
 122         AjaxLinkHandler.prototype.loadUrl = function(url) {
 123                 if (location.hash.slice(1) == url)
 124                         url += '#'
 125                 location.hash = escape(url);
 126         };
 127 }
 128
 129 AjaxLinkHandler.prototype.loadHash = function(hash) {
 130         this.previousHash = hash;
 131         location.hash = hash;
 132 };
 133
 134 AjaxLinkHandler.prototype.ie_loadHistory = function(url) {
 135         location.hash = escape(url);
 136 };
 137
 138 function ajaxSubmitFormHandler(evt) {
 139         var target = getTargetedObject(evt);
 140         if (target.nodeName == 'INPUT' && (target.type == 'submit' || target.type == 'image')) {
 141                 var form = target;
 142                 while (form != document) {
 143                         form = form.parentNode;
 144                         if (form.nodeName == 'FORM') {
 145                                 var fm = new FormManager(form, document.getElementById("mainCell"));
 146                                 fm.submitButton = target;
 147                                 //disableDefault(evt);
 148                                 break;
 149                         }
 150                 }
 151         }
 152
 153 }
 154
 155 function _addRootHandlers() {
 156         if ((AJAX_CONFIG & 1) == 1) {
 157                 window.linkHandler = new AjaxLinkHandler(200);
 158             if (browser.isIE55 || browser.isIE6up) {
 159                 _disableRootClickHandler = false;
 160             }
 161         }
 162         if ((AJAX_CONFIG & 2) == 2) {
 163                 addListener(document, 'click', ajaxSubmitFormHandler);
 164         }
 165 }
 166
 167 registerStartupFunction(_addRootHandlers);
 168
 169 })();