https://www.meb.co.th/assets/vendor.a252a.js

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47    }
48
49    // For two urls to be considered dependant, either one must contain all
50    // of the path arguments the other has, like so:
51    //  - chomp off everything after ? or #. This is a design decision, so this
52    //    function will fail to determine dependencies for sites that store
53    //    their model IDs in query/hash params. If your usecase is not covered
54    //    by this you need to implement this function yourself by overriding
55    //    Intercooler.setIsDependentFunction(function(src, dest) { return bool; });
56    //  - split by / to get the individual path elements, clear out empty values,
57    //    then simply compare them
58    var asrc = src.split(/[\\?#]/, 1)[0].split("/").filter(function(e) {
59      return e != "";
60    });
61
62    var adest = dest.split(/[\\?#]/, 1)[0].split("/").filter(function(e) {
63      return e != "";
64    });
65
66    // ignore purely local tags (local transport)
67    if (asrc == "" || adest == "") {
68      return false;
69    }
70    return adest.slice(0, asrc.length).join("/") == asrc.join("/") ||
71      asrc.slice(0, adest.length).join("/") == adest.join("/");
72  };
73
74  //============================================================
75  // Base Swap Definitions
76  //============================================================
77  function remove(elt) {
78    elt.remove();
79  }
80
81  function showIndicator(elt) {
82    if (elt.closest('.ic-use-transition').length > 0) {
83      elt.data('ic-use-transition', true);
84      elt.removeClass('ic-use-transition');
85    } else {
86      elt.show();
87    }
88  }
89
90  function hideIndicator(elt) {
91    if (elt.data('ic-use-transition') || elt.data('ic-indicator-cleared')) {
92      elt.data('ic-use-transition', null);
93      elt.addClass('ic-use-transition');
94      elt.data('ic-indicator-cleared', true);
95    } else {
96      elt.hide();
97    }
98  }
99
100  function fixICAttributeName(s) {
101    if (USE_DATA) {
102      return 'data-' + s;
103    } else {
104      return s;
105    }
106  }
107
108  function getICAttribute(element, attributeName) {
109    return element.attr(fixICAttributeName(attributeName));
110  }
111
112  function setICAttribute(element, attributeName, attributeValue) {
113    element.attr(fixICAttributeName(attributeName), attributeValue);
114  }
115
116  function prepend(parent, responseContent) {
117    try {
118      parent.prepend(responseContent);
119    } catch (e) {
120      log(parent, formatError(e), "ERROR");
121    }
122    if (getICAttribute(parent, 'ic-limit-children')) {
123      var limit = parseInt(getICAttribute(parent, 'ic-limit-children'));
124      if (parent.children().length > limit) {
125        parent.children().slice(limit, parent.children().length).remove();
126      }
127    }
128  }
129
130  function append(parent, responseContent) {
131    try {
132      parent.append(responseContent);
133    } catch (e) {
134      log(parent, formatError(e), "ERROR");
135    }
136    if (getICAttribute(parent, 'ic-limit-children')) {
137      var limit = parseInt(getICAttribute(parent, 'ic-limit-children'));
138      if (parent.children().length > limit) {
139        parent.children().slice(0, parent.children().length - limit).remove();
140      }
141    }
142  }
143
144  //============================================================
145  // Utility Methods
146  //============================================================
147  function triggerEvent(elt, event, args){
148    if($.zepto) {
149      event = event.split(".").reverse().join(":");
150    }
151    elt.trigger(event, args);
152  }
153
154  function log(elt, msg, level) {
155    if (elt == null) {
156      elt = $('body');
157    }
158    triggerEvent(elt, "log.ic", [msg, level, elt]);
159    if (level == "ERROR") {
160      if (window.console) {
161        window.console.log("Intercooler Error : " + msg);
162      }
163      var errorUrl = closestAttrValue($('body'), 'ic-post-errors-to');
164      if (errorUrl) {
165        $.post(errorUrl, {'error': msg});
166      }
167    }
168  }
169
170  function uuid() {
171    return _UUID++;
172  }
173
174  function icSelectorFor(elt) {
175    return getICAttributeSelector("ic-id='" + getIntercoolerId(elt) + "'");
176  }
177
178  function parseInterval(str) {
179    log(null, "POLL: Parsing interval string " + str, 'DEBUG');
180    if (str == "null" || str == "false" || str == "") {
181      return null;
182    } else if (str.lastIndexOf("ms") == str.length - 2) {
183      return parseFloat(str.substr(0, str.length - 2));
184    } else if (str.lastIndexOf("s") == str.length - 1) {
185      return parseFloat(str.substr(0, str.length - 1)) * 1000;
186    } else {
187      return 1000;
188    }
189  }
190
191  function getICAttributeSelector(attribute) {
192    return "[" + fixICAttributeName(attribute) + "]";
193  }
194
195  function initScrollHandler() {
196    if (_scrollHandler == null) {
197      _scrollHandler = function() {
198        $(getICAttributeSelector("ic-trigger-on='scrolled-into-view'")).each(function() {
199          var _this = $(this);
200          if (isScrolledIntoView(getTriggeredElement(_this)) && _this.data('ic-scrolled-into-view-loaded') != true) {
201            _this.data('ic-scrolled-into-view-loaded', true);
202            fireICRequest(_this);
203          }
204        });
205      };
206      $(window).scroll(_scrollHandler);
207    }
208  }
209
210  function currentUrl() {
211    return window.location.pathname + window.location.search + window.location.hash;
212  }
213
214  // taken from turbolinks.js
215  function createDocument(html) {
216    var doc = null;
217    if (/<(html|body)/i.test(html)) {
218      doc = document.documentElement.cloneNode();
219      doc.innerHTML = html;
220    } else {
221      doc = document.documentElement.cloneNode(true);
222      doc.querySelector('body').innerHTML = html;
223    }
224    return $(doc);
225  }
226
227  //============================================================
228  // Request/Parameter/Include Processing
229  //============================================================
230  function getTarget(elt) {
231    return getTargetImpl(elt, 'ic-target')
232  }
233
234  function getTargetImpl(elt, attibuteName) {
235    var closest = $(elt).closest(getICAttributeSelector(attibuteName));
236    var targetValue = getICAttribute(closest, attibuteName);
237    if (targetValue == 'this') {
238      return closest;
239    } else if (targetValue && targetValue.indexOf('this.') != 0) {
240      if (targetValue.indexOf('closest ') == 0) {
241        return elt.closest(targetValue.substr(8));
242      } else if (targetValue.indexOf('find ') == 0) {
243        return elt.find(targetValue.substr(5));
244      } else {
245        return $(targetValue);
246      }
247    } else {
248      return elt;
249    }
250  }
251
252  function processHeaders(elt, xhr) {
253    elt = $(elt);
254    triggerEvent(elt, "beforeHeaders.ic", [elt, xhr]);
255    log(elt, "response headers: " + xhr.getAllResponseHeaders(), "DEBUG");
256    var target = null;
257
258    // set page title by header
259    if (xhr.getResponseHeader("X-IC-Title")) {
260      document.title = xhr.getResponseHeader("X-IC-Title");
261    }
262
263    if (xhr.getResponseHeader("X-IC-Title-Encoded")) {
264      var decodedTitle = decodeURIComponent((xhr.getResponseHeader("X-IC-Title-Encoded")).replace(/\\+/g, '%20'));
265      document.title = decodedTitle;
266    }
267
268    if (xhr.getResponseHeader("X-IC-Refresh")) {
269      var pathsToRefresh = xhr.getResponseHeader("X-IC-Refresh").split(",");
270      log(elt, "X-IC-Refresh: refreshing " + pathsToRefresh, "DEBUG");
271      $.each(pathsToRefresh, function(i, str) {
272        refreshDependencies(str.replace(/ /g, ""), elt);
273      });
274    }
275
276    if (xhr.getResponseHeader("X-IC-Script")) {
277      log(elt, "X-IC-Script: evaling " + xhr.getResponseHeader("X-IC-Script"), "DEBUG");
278      globalEval(xhr.getResponseHeader("X-IC-Script"), [["elt", elt]]);
279    }
280
281    if (xhr.getResponseHeader("X-IC-Redirect")) {
282      log(elt, "X-IC-Redirect: redirecting to " + xhr.getResponseHeader("X-IC-Redirect"), "DEBUG");
283      window.location = xhr.getResponseHeader("X-IC-Redirect");
284    }
285
286    if (xhr.getResponseHeader("X-IC-CancelPolling") == "true") {
287      cancelPolling(elt.closest(getICAttributeSelector('ic-poll')));
288    }
289
290    if (xhr.getResponseHeader("X-IC-ResumePolling") == "true") {
291      var pollingElt = elt.closest(getICAttributeSelector('ic-poll'));
292      setICAttribute(pollingElt, 'ic-pause-polling', null);
293      startPolling(pollingElt);
294    }
295
296    if (xhr.getResponseHeader("X-IC-SetPollInterval")) {
297      var pollingElt = elt.closest(getICAttributeSelector('ic-poll'));
298      cancelPolling(pollingElt);
299      setICAttribute(pollingElt, 'ic-poll', xhr.getResponseHeader("X-IC-SetPollInterval"));
300      startPolling(pollingElt);
301    }
302
303    if (xhr.getResponseHeader("X-IC-Open")) {
304      log(elt, "X-IC-Open: opening " + xhr.getResponseHeader("X-IC-Open"), "DEBUG");
305      window.open(xhr.getResponseHeader("X-IC-Open"));
306    }
307
308    var triggerValue = xhr.getResponseHeader("X-IC-Trigger");
309    if (triggerValue) {
310      log(elt, "X-IC-Trigger: found trigger " + triggerValue, "DEBUG");
311      target = getTarget(elt);
312      // Deprecated API
313      if (xhr.getResponseHeader("X-IC-Trigger-Data")) {
314        var triggerArgs = $.parseJSON(xhr.getResponseHeader("X-IC-Trigger-Data"));
315        triggerEvent(target, triggerValue, triggerArgs);
316      } else {
317        if (triggerValue.indexOf("{") >= 0) {
318          $.each($.parseJSON(triggerValue), function(event, args) {
319            triggerEvent(target, event, args);
320          });
321        } else {
322          triggerEvent(target, triggerValue, []);
323        }
324      }
325    }
326
327    var localVars = xhr.getResponseHeader("X-IC-Set-Local-Vars");
328    if (localVars) {
329      $.each($.parseJSON(localVars), function(key, val) {
330        localStorage.setItem(key, val);
331      });
332    }
333
334    if (xhr.getResponseHeader("X-IC-Remove")) {
335      if (elt) {
336        var removeVal = xhr.getResponseHeader("X-IC-Remove");
337        removeVal += ''; // normalize as string for zapto
338        var removeValAsInterval = parseInterval(removeVal);
339        log(elt, "X-IC-Remove header found.", "DEBUG");
340        target = getTarget(elt);
341        if(removeVal == "true" || removeValAsInterval == null) {
342          remove(target);
343        } else {
344          target.addClass('ic-removing');
345          setTimeout(function () {
346            remove(target);
347          }, removeValAsInterval);
348        }
349      }
350    }
351
352    triggerEvent(elt, "afterHeaders.ic", [elt, xhr]);
353
354    return true;
355  }
356
357
358  function beforeRequest(elt) {
359    elt.addClass('disabled');
360    elt.addClass('ic-request-in-flight');
361    elt.data('ic-request-in-flight', true);
362  }
363
364  function requestCleanup(indicator, globalIndicator, elt) {
365    if (indicator.length > 0) {
366      hideIndicator(indicator);
367    }
368    if (globalIndicator.length > 0) {
369      hideIndicator(globalIndicator);
370    }
371    elt.removeClass('disabled');
372    elt.removeClass('ic-request-in-flight');
373    elt.data('ic-request-in-flight', false);
374    if (elt.data('ic-next-request')) {
375      elt.data('ic-next-request')["req"]();
376      elt.data('ic-next-request', null);
377    }
378  }
379
380  function replaceOrAddMethod(data, actualMethod) {
381    if ($.type(data) === "string") {
382      var regex = /(&|^)_method=[^&]*/;
383      var content = "&_method=" + actualMethod;
384      if (regex.test(data)) {
385        return data.replace(regex, content)
386      } else {
387        return data + content;
388      }
389    } else {
390      data.append("_method", actualMethod);
391      return data;
392    }
393  }
394
395  /*
396    Is the provided text a valid JavaScript identifier path?
397
398    We should also probably check if an identifier is a JavaScript keyword here.
399  */
400  function isIdentifier(txt) {
401    return /^[$A-Z_][0-9A-Z_$]*$/i.test(txt);
402  }
403
404  /*
405    Evaluate a script snippet provided by the user.
406

464
465      });
466    }
467    return baseURL;
468  }
469
470  function handleRemoteRequest(elt, type, url, data, success) {
471
472    beforeRequest(elt);
473
474    data = replaceOrAddMethod(data, type);
475
476    // Global spinner support
477    var globalIndicator = findGlobalIndicator(elt);
478    if (globalIndicator && globalIndicator.length > 0) {
479      showIndicator(globalIndicator);
480    }
481
482    // Spinner support
483    var indicator = findIndicator(elt);
484    if (indicator.length > 0) {
485      showIndicator(indicator);
486    }
487
488    var requestId = uuid();
489    var requestStart = new Date();
490    var actualRequestType;
491    if(USE_ACTUAL_HTTP_METHOD) {
492      actualRequestType = type;
493    } else {
494      actualRequestType = type == 'GET' ? 'GET' : 'POST';
495    }
496
497    var ajaxSetup = {
498      type: actualRequestType,
499      url: url,
500      data: data,
501      dataType: 'text',
502      headers: {
503        "Accept": "text/html-partial, */*; q=0.9",
504        "X-IC-Request": true,
505        "X-HTTP-Method-Override": type
506      },
507      beforeSend: function(xhr, settings) {
508        triggerEvent(elt, "beforeSend.ic", [elt, data, settings, xhr, requestId]);
509        log(elt, "before AJAX request " + requestId + ": " + type + " to " + url, "DEBUG");
510        var onBeforeSend = closestAttrValue(elt, 'ic-on-beforeSend');
511        if (onBeforeSend) {
512          globalEval(onBeforeSend, [["elt", elt], ["data", data], ["settings", settings], ["xhr", xhr]]);
513        }
514        maybeInvokeLocalAction(elt, "-beforeSend");
515      },
516      success: function(responseData, textStatus, xhr) {
517        triggerEvent(elt, "success.ic", [elt, responseData, textStatus, xhr, requestId]);
518        log(elt, "AJAX request " + requestId + " was successful.", "DEBUG");
519        var onSuccess = closestAttrValue(elt, 'ic-on-success');
520        if (onSuccess) {
521          if (globalEval(onSuccess, [["elt", elt], ["data", responseData], ["textStatus", textStatus], ["xhr", xhr]]) == false) {
522            return;
523          }
524        }
525
526        var beforeHeaders = new Date();
527        var oldTitle = document.title;
528        try {
529          if (processHeaders(elt, xhr)) {
530            log(elt, "Processed headers for request " + requestId + " in " + (new Date() - beforeHeaders) + "ms", "DEBUG");
531            var beforeSuccess = new Date();
532
533            if (xhr.getResponseHeader("X-IC-PushURL") || closestAttrValue(elt, 'ic-push-url') == "true") {
534              try {
535                requestCleanup(indicator, globalIndicator, elt); // clean up before snap-shotting HTML
536                var baseURL = closestAttrValue(elt, 'ic-src');
537                var paramsToPush = closestAttrValue(elt, 'ic-push-params');
538                var newUrl = xhr.getResponseHeader("X-IC-PushURL") || getLocalURL(baseURL, paramsToPush, data);
539                if(_history) {
540                  _history.snapshotForHistory(newUrl, oldTitle);
541                } else {
542                  throw "History support not enabled";
543                }
544              } catch (e) {
545                log(elt, "Error during history snapshot for " + requestId + ": " + formatError(e), "ERROR");
546              }
547            }
548
549            success(responseData, textStatus, elt, xhr);
550
551            log(elt, "Process content for request " + requestId + " in " + (new Date() - beforeSuccess) + "ms", "DEBUG");
552          }
553          triggerEvent(elt, "after.success.ic", [elt, responseData, textStatus, xhr, requestId]);
554          maybeInvokeLocalAction(elt, "-success");
555        } catch (e) {
556          log(elt, "Error processing successful request " + requestId + " : " + formatError(e), "ERROR");
557        }
558      },
559      error: function(xhr, status, str) {
560        triggerEvent(elt, "error.ic", [elt, status, str, xhr]);
561        var onError = closestAttrValue(elt, 'ic-on-error');
562        if (onError) {
563          globalEval(onError, [["elt", elt], ["status", status], ["str", str], ["xhr", xhr]]);
564        }
565        processHeaders(elt, xhr);
566        maybeInvokeLocalAction(elt, "-error");
567        log(elt, "AJAX request " + requestId + " to " + url + " experienced an error: " + str, "ERROR");
568      },
569      complete: function(xhr, status) {
570        log(elt, "AJAX request " + requestId + " completed in " + (new Date() - requestStart) + "ms", "DEBUG");
571        requestCleanup(indicator, globalIndicator, elt);
572        try {
573          if ($.contains(document, elt[0])) {
574            triggerEvent(elt, "complete.ic", [elt, data, status, xhr, requestId]);
575          } else {
576            triggerEvent($('body'), "complete.ic", [elt, data, status, xhr, requestId]);
577          }
578        } catch (e) {
579          log(elt, "Error during complete.ic event for " + requestId + " : " + formatError(e), "ERROR");
580        }
581        var onComplete = closestAttrValue(elt, 'ic-on-complete');
582        if (onComplete) {
583          globalEval(onComplete, [["elt", elt], ["xhr", xhr], ["status", status]]);
584        }
585        maybeInvokeLocalAction(elt, "-complete");
586      }
587    };
588    if ($.type(data) != "string") {
589      ajaxSetup.dataType = null;
590      ajaxSetup.processData = false;
591      ajaxSetup.contentType = false;
592    }
593
594    triggerEvent($(document), "beforeAjaxSend.ic", [ajaxSetup, elt]);
595
596    if(ajaxSetup.cancel) {
597      requestCleanup(indicator, globalIndicator, elt);
598    } else {
599      $.ajax(ajaxSetup)
600    }
601  }
602
603  function findGlobalIndicator(elt) {
604    var indicator = $([]);
605    elt = $(elt);
606    var attr = closestAttrValue(elt, 'ic-global-indicator');
607    if (attr && attr !== "false") {
608      indicator = $(attr).first();
609    }
610    return indicator;
611  }
612
613  function findIndicator(elt) {
614    var indicator = $([]);
615    elt = $(elt);
616    if (getICAttribute(elt, 'ic-indicator')) {
617      indicator = $(getICAttribute(elt, 'ic-indicator')).first();
618    } else {
619      indicator = elt.find(".ic-indicator").first();
620      if (indicator.length == 0) {
621        var parent = closestAttrValue(elt, 'ic-indicator');
622        if (parent) {
623          indicator = $(parent).first();
624        } else {
625          if (elt.next().is('.ic-indicator')) {
626            indicator = elt.next();
627          }
628        }
629      }
630    }
631    return indicator;
632  }
633
634  function processIncludes(data, str) {
635    if ($.trim(str).indexOf("{") == 0) {
636      var obj = $.parseJSON(str);
637      $.each(obj, function(name, value) {
638        data = appendData(data, name, value);
639      });
640    } else {
641      $(str).each(function() {
642        var obj = $(this).serializeArray();
643        $.each(obj, function(i, input) {
644          data = appendData(data, input.name, input.value);
645        });
646      });
647    }
648    return data;
649  }
650
651  function processLocalVars(data, str) {
652    $(str.split(",")).each(function() {
653      var key = $.trim(this);
654      var item = localStorage.getItem(key);
655      if(item) {
656        data = appendData(data, key, item);
657      }
658    });
659    return data;
660  }
661
662  function appendData(data, key, value) {
663    if ($.type(data) === "string") {
664      if($.type(value) !== "string") {
665        value = JSON.stringify(value);
666      }
667      return data + "&" + key + "=" + encodeURIComponent(value);
668    } else {
669      data.append(key, value);
670      return data;
671    }
672  }
673
674  function getParametersForElement(verb, elt, triggerOrigin) {
675    var target = getTarget(elt);
676    var data = null;
677
678    if (elt.is('form') && elt.attr('enctype') == 'multipart/form-data') {
679      data = new FormData(elt[0]);
680      data = appendData(data, 'ic-request', true);
681    } else {
682      data = "ic-request=true";
683      // if the element is in a form, include the entire form
684      var closestForm = elt.closest('form');
685      if (elt.is('form') || (verb != "GET" && closestForm.length > 0)) {
686        data += "&" + closestForm.serialize();
687        // include data from a focused button (to capture clicked button value)
688        var buttonData = elt.data('ic-last-clicked-button');
689        if(buttonData) {
690          data = appendData(data, buttonData.name, buttonData.value);
691        }
692      } else { // otherwise include the element
693        data += "&" + elt.serialize();
694      }
695    }
696
697    var promptText = closestAttrValue(elt, 'ic-prompt');
698    if (promptText) {
699      var promptVal = prompt(promptText);
700      if (promptVal) {
701        var promptParamName = closestAttrValue(elt, 'ic-prompt-name') || 'ic-prompt-value';
702        data = appendData(data, promptParamName, promptVal);
703      } else {
704        return null;
705      }
706    }
707
708    if (elt.attr('id')) {
709      data = appendData(data, 'ic-element-id', elt.attr('id'));
710    }
711    if (elt.attr('name')) {
712      data = appendData(data, 'ic-element-name', elt.attr('name'));
713    }
714    if (getICAttribute(target, 'ic-id')) {
715      data = appendData(data, 'ic-id', getICAttribute(target, 'ic-id'));
716    }
717    if (target.attr('id')) {
718      data = appendData(data, 'ic-target-id', target.attr('id'));
719    }
720    if (triggerOrigin && triggerOrigin.attr('id')) {
721      data = appendData(data, 'ic-trigger-id', triggerOrigin.attr('id'));
722    }
723    if (triggerOrigin && triggerOrigin.attr('name')) {
724      data = appendData(data, 'ic-trigger-name', triggerOrigin.attr('name'));
725    }
726    var includeAttr = closestAttrValue(elt, 'ic-include');
727    if (includeAttr) {
728      data = processIncludes(data, includeAttr);
729    }
730    var localVars = closestAttrValue(elt, 'ic-local-vars');
731    if (localVars) {
732      data = processLocalVars(data, localVars);
733    }
734    $(getICAttributeSelector('ic-global-include')).each(function() {
735      data = processIncludes(data, getICAttribute($(this), 'ic-global-include'));
736    });
737    data = appendData(data, 'ic-current-url', currentUrl());
738
739    var selectFromResp = closestAttrValue(elt, 'ic-select-from-response');
740    if(selectFromResp) {
741      data = appendData(data, 'ic-select-from-response', selectFromResp);
742    }
743
744    log(elt, "request parameters " + data, "DEBUG");
745
746    return data;
747  }
748
749  function maybeSetIntercoolerInfo(elt) {
750    var target = getTarget(elt);
751    getIntercoolerId(target);
752    if (elt.data('elementAdded.ic') != true) {
753      elt.data('elementAdded.ic', true);
754      triggerEvent(elt, "elementAdded.ic");
755    }
756  }
757
758  function getIntercoolerId(elt) {
759    if (!getICAttribute(elt, 'ic-id')) {
760      setICAttribute(elt, 'ic-id', uuid());
761    }
762    return getICAttribute(elt, 'ic-id');
763  }
764
765  //============================================================
766  // Tree Processing
767  //============================================================
768
769  function processNodes(elt) {
770    elt = $(elt);
771    if (elt.length > 1) {
772      elt.each(function() {
773        processNodes(this);
774      });
775    } else {
776      processMacros(elt);
777      processEnhancement(elt);
778      processSources(elt);
779      processPolling(elt);
780      processEventSources(elt);
781      processTriggerOn(elt);
782      processRemoveAfter(elt);
783      processAddClasses(elt);
784      processRemoveClasses(elt);
785    }
786  }
787
788  function fireReadyStuff(elt) {
789    triggerEvent(elt, 'nodesProcessed.ic');
790    $.each(_readyHandlers, function(i, handler) {
791      try {
792        handler(elt);
793      } catch (e) {
794        log(elt, formatError(e), "ERROR");
795      }
796    });
797  }
798
799  function autoFocus(elt) {
800    elt.find('[autofocus]').last().focus();
801  }
802
803  function processMacros(elt) {
804    $.each(_MACROS, function(i, macro) {
805      if (elt.closest('.ic-ignore').length == 0) {
806        if (elt.is('[' + macro + ']')) {
807          processMacro(macro, elt);
808        }
809        elt.find('[' + macro + ']').each(function() {
810          var _this = $(this);
811          if (_this.closest('.ic-ignore').length == 0) {
812            processMacro(macro, _this);
813          }
814        });
815      }
816    });
817  }
818
819  function processSources(elt) {
820    if (elt.closest('.ic-ignore').length == 0) {
821      if (elt.is(getICAttributeSelector("ic-src"))) {
822        maybeSetIntercoolerInfo(elt);
823      }
824      elt.find(getICAttributeSelector("ic-src")).each(function() {
825        var _this = $(this);
826        if (_this.closest('.ic-ignore').length == 0) {
827          maybeSetIntercoolerInfo(_this);
828        }
829      });
830    }
831  }
832
833  function processPolling(elt) {
834    if (elt.closest('.ic-ignore').length == 0) {
835      if (elt.is(getICAttributeSelector("ic-poll"))) {
836        maybeSetIntercoolerInfo(elt);
837        startPolling(elt);
838      }
839      elt.find(getICAttributeSelector("ic-poll")).each(function() {
840        var _this = $(this);
841        if (_this.closest('.ic-ignore').length == 0) {
842          maybeSetIntercoolerInfo(_this);
843          startPolling(_this);
844        }
845      });
846    }
847  }
848
849  function processTriggerOn(elt) {
850    if (elt.closest('.ic-ignore').length == 0) {
851      handleTriggerOn(elt);
852      elt.find(getICAttributeSelector('ic-trigger-on')).each(function() {
853        var _this = $(this);
854        if (_this.closest('.ic-ignore').length == 0) {
855          handleTriggerOn(_this);
856        }
857      });
858    }
859  }
860
861  function processRemoveAfter(elt) {
862    if (elt.closest('.ic-ignore').length == 0) {
863      handleRemoveAfter(elt);
864      elt.find(getICAttributeSelector('ic-remove-after')).each(function() {
865        var _this = $(this);
866        if (_this.closest('.ic-ignore').length == 0) {
867          handleRemoveAfter(_this);
868        }
869      });
870    }
871  }
872
873  function processAddClasses(elt) {
874    if (elt.closest('.ic-ignore').length == 0) {
875      handleAddClasses(elt);
876      elt.find(getICAttributeSelector('ic-add-class')).each(function() {
877        var _this = $(this);
878        if (_this.closest('.ic-ignore').length == 0) {
879          handleAddClasses(_this);
880        }
881      });
882    }
883  }
884
885  function processRemoveClasses(elt) {
886    if (elt.closest('.ic-ignore').length == 0) {
887      handleRemoveClasses(elt);
888      elt.find(getICAttributeSelector('ic-remove-class')).each(function() {
889        var _this = $(this);
890        if (_this.closest('.ic-ignore').length == 0) {
891          handleRemoveClasses(_this);
892        }
893      });
894    }
895  }
896
897  function processEnhancement(elt) {
898    if (elt.closest('.ic-ignore').length == 0) {
899      if(closestAttrValue(elt, 'ic-enhance') === 'true') {
900        enhanceDomTree(elt);
901      } else {
902        elt.find(getICAttributeSelector('ic-enhance')).each(function(){
903          enhanceDomTree($(this));
904        });
905      }
906    }
907  }
908
909  function processEventSources(elt) {
910    if (elt.closest('.ic-ignore').length == 0) {
911      handleEventSource(elt);
912      elt.find(getICAttributeSelector('ic-sse-src')).each(function() {
913        var _this = $(this);
914        if (_this.closest('.ic-ignore').length == 0) {
915          handleEventSource(_this);
916        }
917      });
918    }
919  }
920
921  //============================================================
922  // Polling support
923  //============================================================
924
925  function startPolling(elt) {
926    if (elt.data('ic-poll-interval-id') == null && getICAttribute(elt, 'ic-pause-polling') != 'true') {
927      var interval = parseInterval(getICAttribute(elt, 'ic-poll'));
928      if (interval != null) {
929        var selector = icSelectorFor(elt);
930        var repeats = parseInt(getICAttribute(elt, 'ic-poll-repeats')) || -1;
931        var currentIteration = 0;
932        log(elt, "POLL: Starting poll for element " + selector, "DEBUG");
933        var timerId = setInterval(function() {
934          var target = $(selector);
935          triggerEvent(elt, "onPoll.ic", target);
936          if ((target.length == 0) || (currentIteration == repeats) || elt.data('ic-poll-interval-id') != timerId) {
937            log(elt, "POLL: Clearing poll for element " + selector, "DEBUG");
938            clearTimeout(timerId);
939          } else {
940            fireICRequest(target);
941          }
942          currentIteration++;
943        }, interval);
944        elt.data('ic-poll-interval-id', timerId);
945      }
946    }
947  }
948
949  function cancelPolling(elt) {
950    if (elt.data('ic-poll-interval-id') != null) {
951      clearTimeout(elt.data('ic-poll-interval-id'));
952      elt.data('ic-poll-interval-id', null);
953    }
954  }
955
956  //============================================================----
957  // Dependency support
958  //============================================================----
959
960  function refreshDependencies(dest, src) {
961    log(src, "refreshing dependencies for path " + dest, "DEBUG");
962    $(getICAttributeSelector('ic-src')).each(function() {
963      var fired = false;
964      var _this = $(this);
965      if (verbFor(_this) == "GET" && getICAttribute(_this, 'ic-deps') != 'ignore' ) {
966        if (isDependent(dest, getICAttribute(_this, 'ic-src'))) {
967          if (src == null || $(src)[0] != _this[0]) {
968            fireICRequest(_this);
969            fired = true;
970          }
971        } else if (isICDepsDependent(dest, getICAttribute(_this, 'ic-deps')) || getICAttribute(_this, 'ic-deps') == "*") {
972          if (src == null || $(src)[0] != _this[0]) {
973            fireICRequest(_this);
974            fired = true;
975          }
976        }
977      }
978      if (fired) {
979        log(_this, "depends on path " + dest + ", refreshing...", "DEBUG")
980      }
981    });
982  }
983
984  function isICDepsDependent(src, dest) {
985    if(dest) {
986      var paths = dest.split(",");
987      for (var i = 0; i < paths.length; i++) {
988        var str = paths[i].trim();
989        if(isDependent(src, str)) {
990          return true;
991        }
992      }
993    }
994    return false;
995  }
996
997  function isDependent(src, dest) {
998    return !!_isDependentFunction(src, dest);
999  }
1000
1001  //============================================================----
1002  // Trigger-On support
1003  //============================================================----
1004
1005  function verbFor(elt) {
1006    elt = $(elt);
1007    if (getICAttribute(elt, 'ic-verb')) {
1008      return getICAttribute(elt, 'ic-verb').toUpperCase();
1009    }
1010    return "GET";
1011  }
1012
1013  function eventFor(attr, elt) {
1014    if (attr == "default") {
1015      elt = $(elt);
1016      if (elt.is('button')) {
1017        return 'click';
1018      } else if (elt.is('form')) {
1019        return 'submit';
1020      } else if (elt.is('input, textarea, select, button')) {
1021        return 'change';
1022      } else {
1023        return 'click';
1024      }
1025    } else {
1026      return attr;
1027    }
1028  }
1029
1030  function preventDefault(elt, evt) {
1031    return elt.is('form') ||
1032          (elt.is('input[type="submit"], button') && elt.closest('form').length == 1) ||
1033          (elt.is('a') && elt.is('[href]') && elt.attr('href').indexOf('#') != 0);
1034  }
1035
1036  function handleRemoveAfter(elt) {
1037    elt = $(elt);
1038    if (getICAttribute(elt, 'ic-remove-after')) {
1039      var interval = parseInterval(getICAttribute(elt, 'ic-remove-after'));
1040      setTimeout(function() {
1041        remove(elt);
1042      }, interval);
1043    }
1044  }
1045
1046  function parseAndApplyClass(classInfo, elt, operation) {
1047    var cssClass = "";
1048    var delay = 50;
1049    if (classInfo.indexOf(":") > 0) {
1050      var split = classInfo.split(':');
1051      cssClass = split[0];
1052      delay = parseInterval(split[1]);
1053    } else {
1054      cssClass = classInfo;
1055    }
1056    setTimeout(function() {
1057      elt[operation](cssClass)
1058    }, delay);
1059  }
1060
1061  function handleAddClasses(elt) {
1062    elt = $(elt);
1063    if (getICAttribute(elt, 'ic-add-class')) {
1064      var values = getICAttribute(elt, 'ic-add-class').split(",");
1065      var arrayLength = values.length;
1066      for (var i = 0; i < arrayLength; i++) {
1067        parseAndApplyClass($.trim(values[i]), elt, 'addClass');
1068      }
1069    }
1070  }
1071
1072  function handleRemoveClasses(elt) {
1073    elt = $(elt);
1074    if (getICAttribute(elt, 'ic-remove-class')) {
1075      var values = getICAttribute(elt, 'ic-remove-class').split(",");
1076      var arrayLength = values.length;
1077      for (var i = 0; i < arrayLength; i++) {
1078        parseAndApplyClass($.trim(values[i]), elt, 'removeClass');
1079      }
1080    }
1081  }
1082
1083  function handleEventSource(elt) {
1084    elt = $(elt);
1085    if (getICAttribute(elt, 'ic-sse-src')) {
1086      var evtSrcUrl = getICAttribute(elt, 'ic-sse-src');
1087      var evtSrcWithCredentials = getICAttribute(elt, 'ic-sse-with-credentials') === 'true';
1088      var eventSource = initEventSource(elt, evtSrcUrl, evtSrcWithCredentials);
1089      elt.data('ic-event-sse-source', eventSource);
1090      elt.data('ic-event-sse-map', {});
1091    }
1092  }
1093
1094  function initEventSource(elt, evtSrcUrl, evtSrcWithCredentials) {
1095    var eventSource = Intercooler._internal.initEventSource(evtSrcUrl, evtSrcWithCredentials);
1096    eventSource.onmessage = function(e) {
1097      processICResponse(e.data, elt, false);
1098    };
1099    return eventSource;
1100  }
1101
1102  function registerSSE(sourceElement, event) {
1103    var source = sourceElement.data('ic-event-sse-source');
1104    var eventMap = sourceElement.data('ic-event-sse-map');
1105    if(source.addEventListener && eventMap[event] != true) {
1106      source.addEventListener(event, function(){
1107        sourceElement.find(getICAttributeSelector('ic-trigger-on')).each(function(){
1108          var _that = $(this);
1109          if(_that.attr('ic-trigger-on') == "sse:" + event) {
1110            fireICRequest(_that);
1111          }
1112        });
1113      })
1114    }
1115  }
1116
1117  function getTriggeredElement(elt) {
1118    var triggerFrom = getICAttribute(elt, 'ic-trigger-from');
1119    if(triggerFrom) {
1120      if (triggerFrom == "document") {
1121        return $(document);
1122      } else if (triggerFrom == "window") {
1123        return $(window);
1124      } else {
1125        return $(triggerFrom);
1126      }
1127    } else {
1128      return elt;
1129    }
1130  }
1131
1132  function handleTriggerOn(elt) {
1133
1134    var triggerOnValue = getICAttribute(elt, 'ic-trigger-on');
1135    if (triggerOnValue) {
1136      // record button or submit input click info
1137      if(elt.is('form')) {
1138        elt.on('click focus', 'input, button, select, textarea', function(e){
1139          if($(this).is('input[type="submit"], button') && $(this).is("[name]")) {
1140            elt.data('ic-last-clicked-button', {name:$(this).attr("name"), value:$(this).val()})
1141          } else {
1142            elt.data('ic-last-clicked-button', null)
1143          }
1144        });
1145      }
1146      var triggerOnArray = triggerOnValue.split(",");
1147      for (var i = 0; i < triggerOnArray.length; i++) {
1148        var triggerOn = $.trim(triggerOnArray[i]);
1149        var splitTriggerOn = triggerOn.split(" ");
1150        var eventString = eventFor(splitTriggerOn[0], $(elt));
1151        var eventModifier = splitTriggerOn[1];
1152
1153        if (triggerOn == 'load') {
1154          fireICRequest(elt);
1155        } else if (triggerOn == 'scrolled-into-view') {
1156          initScrollHandler();
1157          setTimeout(function() {
1158            triggerEvent($(window), 'scroll');
1159          }, 100); // Trigger a scroll in case element is already viewable
1160        } else {
1161          if(eventString.indexOf("sse:") == 0) {
1162            //Server-sent event, find closest event source and register for it
1163            var sourceElt = elt.closest(getICAttributeSelector('ic-sse-src'));
1164            if(sourceElt.length > 0) {
1165              registerSSE(sourceElt, splitTriggerOn[0].substr(4))
1166            }
1167          } else {
1168            $(getTriggeredElement(elt)).on(eventString, function(e) {
1169              var onBeforeTrigger = closestAttrValue(elt, 'ic-on-beforeTrigger');
1170              if (onBeforeTrigger) {
1171                if (globalEval(onBeforeTrigger, [["elt", elt], ["evt", e], ["elt", elt]]) == false) {
1172                  log(elt, "ic-trigger cancelled by ic-on-beforeTrigger", "DEBUG");
1173                  return false;
1174                }
1175              }
1176
1177              if (eventModifier == 'changed') {
1178                var currentVal = elt.val();
1179                var previousVal = elt.data('ic-previous-val');
1180                elt.data('ic-previous-val', currentVal);
1181                if (currentVal != previousVal) {
1182                  fireICRequest(elt);
1183                }
1184              } else if (eventModifier == 'once') {
1185                var alreadyTriggered = elt.data('ic-already-triggered');
1186                elt.data('ic-already-triggered', true);
1187                if (alreadyTriggered !== true) {
1188                  fireICRequest(elt);
1189                }
1190              } else {
1191                fireICRequest(elt);
1192              }
1193              if (preventDefault(elt, e)) {
1194                e.preventDefault();
1195                return false;
1196              }
1197              return true;
1198            });
1199            if(eventString && (eventString.indexOf("timeout:") == 0)) {
1200              var timeout = parseInterval(eventString.split(":")[1]);
1201              setTimeout(function () {
1202                $(getTriggeredElement(elt)).trigger(eventString);
1203              }, timeout);
1204            }
1205          }
1206        }
1207      }
1208    }
1209  }
1210
1211  //============================================================----
1212  // Macro support
1213  //============================================================----
1214
1215  function macroIs(macro, constant) {
1216    return macro == fixICAttributeName(constant);
1217  }
1218
1219  function processMacro(macro, elt) {
1220    // action attributes
1221    if (macroIs(macro, 'ic-post-to')) {
1222      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-post-to'));
1223      setIfAbsent(elt, 'ic-verb', 'POST');
1224      setIfAbsent(elt, 'ic-trigger-on', 'default');
1225      setIfAbsent(elt, 'ic-deps', 'ignore');
1226    }
1227    if (macroIs(macro, 'ic-put-to')) {
1228      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-put-to'));
1229      setIfAbsent(elt, 'ic-verb', 'PUT');
1230      setIfAbsent(elt, 'ic-trigger-on', 'default');
1231      setIfAbsent(elt, 'ic-deps', 'ignore');
1232    }
1233    if (macroIs(macro, 'ic-patch-to')) {
1234      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-patch-to'));
1235      setIfAbsent(elt, 'ic-verb', 'PATCH');
1236      setIfAbsent(elt, 'ic-trigger-on', 'default');
1237      setIfAbsent(elt, 'ic-deps', 'ignore');
1238    }
1239    if (macroIs(macro, 'ic-get-from')) {
1240      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-get-from'));
1241      setIfAbsent(elt, 'ic-trigger-on', 'default');
1242      setIfAbsent(elt, 'ic-deps', 'ignore');
1243    }
1244    if (macroIs(macro, 'ic-delete-from')) {
1245      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-delete-from'));
1246      setIfAbsent(elt, 'ic-verb', 'DELETE');
1247      setIfAbsent(elt, 'ic-trigger-on', 'default');
1248      setIfAbsent(elt, 'ic-deps', 'ignore');
1249    }
1250
1251    if (macroIs(macro, 'ic-action')) {
1252      setIfAbsent(elt, 'ic-trigger-on', 'default');
1253    }
1254
1255    // non-action attributes
1256    var value = null;
1257    var url = null;
1258    if (macroIs(macro, 'ic-style-src')) {
1259      value = getICAttribute(elt, 'ic-style-src').split(":");
1260      var styleAttribute = value[0];
1261      url = value[1];
1262      setIfAbsent(elt, 'ic-src', url);
1263      setIfAbsent(elt, 'ic-target', 'this.style.' + styleAttribute);
1264    }
1265    if (macroIs(macro, 'ic-attr-src')) {
1266      value = getICAttribute(elt, 'ic-attr-src').split(":");
1267      var attribute = value[0];
1268      url = value[1];
1269      setIfAbsent(elt, 'ic-src', url);
1270      setIfAbsent(elt, 'ic-target', 'this.' + attribute);
1271    }
1272    if (macroIs(macro, 'ic-prepend-from')) {
1273      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-prepend-from'));
1274      setIfAbsent(elt, 'ic-swap-style', 'prepend');
1275    }
1276    if (macroIs(macro, 'ic-append-from')) {
1277      setIfAbsent(elt, 'ic-src', getICAttribute(elt, 'ic-append-from'));
1278      setIfAbsent(elt, 'ic-swap-style', 'append');
1279    }
1280  }
1281
1282  function isLocalLink(anchor) {
1283    return location.hostname === anchor[0].hostname &&
1284      anchor.attr('href') &&
1285      !anchor.attr('href').startsWith("#")
1286  }
1287
1288  function enhanceAnchor(anchor) {
1289    if (closestAttrValue(anchor, 'ic-enhance') === "true") {
1290      if (isLocalLink(anchor)) {
1291        setIfAbsent(anchor, 'ic-src', anchor.attr('href'));
1292        setIfAbsent(anchor, 'ic-trigger-on', 'default');
1293        setIfAbsent(anchor, 'ic-deps', 'ignore');
1294        setIfAbsent(anchor, 'ic-push-url', 'true');
1295      }
1296    }
1297  }
1298
1299  function determineFormVerb(form) {
1300    return form.find('input[name="_method"]').val() || form.attr('method') || form[0].method;
1301  }
1302
1303  function enhanceForm(form) {
1304    if (closestAttrValue(form, 'ic-enhance') === "true") {
1305      setIfAbsent(form, 'ic-src', form.attr('action'));
1306      setIfAbsent(form, 'ic-trigger-on', 'default');
1307      setIfAbsent(form, 'ic-deps', 'ignore');
1308      setIfAbsent(form, 'ic-verb', determineFormVerb(form));
1309    }
1310  }
1311
1312  function enhanceDomTree(elt) {
1313    if(elt.is('a')) {
1314      enhanceAnchor(elt);
1315    }
1316    elt.find('a').each(function(){
1317      enhanceAnchor($(this));
1318    });
1319    if(elt.is('form')){
1320      enhanceForm(elt);
1321    }
1322    elt.find('form').each(function(){
1323      enhanceForm($(this));
1324    });
1325  }
1326
1327  function setIfAbsent(elt, attr, value) {
1328    if (getICAttribute(elt, attr) == null) {
1329      setICAttribute(elt, attr, value);
1330    }
1331  }
1332
1333  //============================================================----
1334  // Utilities
1335  //============================================================----
1336
1337  function isScrolledIntoView(elem) {
1338    elem = $(elem);
1339    if (elem.height() == 0 && elem.width() == 0) {
1340      return false;
1341    }
1342    var docViewTop = $(window).scrollTop();
1343    var docViewBottom = docViewTop + $(window).height();
1344
1345    var elemTop = elem.offset().top;
1346    var elemBottom = elemTop + elem.height();
1347
1348    return ((elemBottom >= docViewTop) && (elemTop <= docViewBottom)
1349      && (elemBottom <= docViewBottom) && (elemTop >= docViewTop));
1350  }
1351
1352  function maybeScrollToTarget(elt, target) {
1353    if (closestAttrValue(elt, 'ic-scroll-to-target') != "false" &&
1354      (closestAttrValue(elt, 'ic-scroll-to-target') == 'true' ||
1355        closestAttrValue(target, 'ic-scroll-to-target') == 'true')) {
1356      var offset = -50; // -50 px default offset padding
1357      if (closestAttrValue(elt, 'ic-scroll-offset')) {
1358        offset = parseInt(closestAttrValue(elt, 'ic-scroll-offset'));
1359      } else if (closestAttrValue(target, 'ic-scroll-offset')) {
1360        offset = parseInt(closestAttrValue(target, 'ic-scroll-offset'));
1361      }
1362      var currentPosition = target.offset().top;
1363      var portalTop = $(window).scrollTop();
1364      var portalEnd = portalTop + window.innerHeight;
1365      //if the current top of this element is not visible, scroll it to the top position
1366      if (currentPosition < portalTop || currentPosition > portalEnd) {
1367        offset += currentPosition;
1368        $('html,body').animate({scrollTop: offset}, 400);
1369      }
1370    }
1371  }
1372
1373  function getTransitionDuration(elt, target) {
1374    var transitionDuration = closestAttrValue(elt, 'ic-transition-duration');
1375    if (transitionDuration) {
1376      return parseInterval(transitionDuration);
1377    }
1378    transitionDuration = closestAttrValue(target, 'ic-transition-duration');
1379    if (transitionDuration) {
1380      return parseInterval(transitionDuration);
1381    }
1382    target = $(target);
1383    var duration = 0;
1384    var durationStr = target.css('transition-duration');
1385    if (durationStr) {
1386      duration += parseInterval(durationStr);
1387    }
1388    var delayStr = target.css('transition-delay');
1389    if (delayStr) {
1390      duration += parseInterval(delayStr);
1391    }
1392    return duration;
1393  }
1394
1395  function closeSSESource(elt) {
1396    var src = elt.data('ic-event-sse-source');
1397    try {
1398      if(src) {
1399        src.close();
1400      }
1401    } catch (e) {
1402      log(elt, "Error closing ServerSentEvent source" + e, "ERROR");
1403    }
1404  }
1405
1406  function beforeSwapCleanup(target) {
1407    target.find(getICAttributeSelector('ic-sse-src')).each(function() {
1408      closeSSESource($(this));
1409    });
1410    triggerEvent(target, 'beforeSwap.ic');
1411  }
1412
1413  function processICResponse(responseContent, elt, forHistory, url) {
1414    if (responseContent && responseContent != "" && responseContent != " ") {
1415
1416      log(elt, "response content: \\n" + responseContent, "DEBUG");
1417      var target = getTarget(elt);
1418
1419      var transformer = closestAttrValue(elt, 'ic-transform-response');
1420      if(transformer) {
1421        responseContent = globalEval(transformer, [["content", responseContent], ["url", url], ["elt", elt]]);
1422      }
1423
1424      var contentToSwap = maybeFilter(responseContent, closestAttrValue(elt, 'ic-select-from-response'));
1425
1426      if (closestAttrValue(elt, 'ic-fix-ids') == "true") {
1427        fixIDs(contentToSwap);
1428      }
1429
1430      var doSwap = function() {
1431        if (closestAttrValue(elt, 'ic-replace-target') == "true") {
1432          try {
1433            beforeSwapCleanup(target);
1434            closeSSESource(target);
1435            target.replaceWith(contentToSwap);
1436            target = contentToSwap;
1437          } catch (e) {
1438            log(elt, formatError(e), "ERROR");
1439          }
1440          processNodes(contentToSwap);
1441          fireReadyStuff(target);
1442          autoFocus(target);
1443        } else {
1444          if (getICAttribute(elt, 'ic-swap-style') == "prepend") {
1445            prepend(target, contentToSwap);
1446            processNodes(contentToSwap);
1447            fireReadyStuff(target);
1448            autoFocus(target);
1449          } else if (getICAttribute(elt, 'ic-swap-style') == "append") {
1450            append(target, contentToSwap);
1451            processNodes(contentToSwap);
1452            fireReadyStuff(target);
1453            autoFocus(target);
1454          } else {
1455            try {
1456              beforeSwapCleanup(target);
1457              target.empty().append(contentToSwap);
1458            } catch (e) {
1459              log(elt, formatError(e), "ERROR");
1460            }
1461            target.children().each(function() {
1462              processNodes(this);
1463            });
1464            fireReadyStuff(target);
1465            autoFocus(target);
1466          }
1467          if (forHistory != true) {
1468            maybeScrollToTarget(elt, target);
1469          }
1470
1471          var switchClass = elt.closest(getICAttributeSelector('ic-switch-class'));
1472          var classToSwitch = switchClass.attr(fixICAttributeName('ic-switch-class'));
1473          if(classToSwitch) {
1474            switchClass.children().removeClass(classToSwitch);
1475            switchClass.children().each(function(){
1476              if($.contains($(this)[0], $(elt)[0]) || $(this)[0] == $(elt)[0]) {
1477                $(this).addClass(classToSwitch);
1478                $(this).addClass(classToSwitch);
1479              }
1480            })
1481          }
1482
1483        }
1484      };
1485
1486      if (target.length == 0) {
1487        //TODO cgross - refactor getTarget to return printable string here
1488        log(elt, "Invalid target for element: " + getICAttribute(elt.closest(getICAttributeSelector('ic-target')), 'ic-target'), "ERROR");
1489        return;
1490      }
1491
1492      var delay = getTransitionDuration(elt, target);
1493      target.addClass('ic-transitioning');
1494      setTimeout(function() {
1495        try {
1496          doSwap();
1497        } catch (e) {
1498          log(elt, "Error during content swap : " + formatError(e), "ERROR");
1499        }
1500        setTimeout(function() {
1501          try {
1502            target.removeClass('ic-transitioning');
1503            if(_history) {
1504              _history.updateHistory();
1505            }
1506            triggerEvent(target, "complete_transition.ic", [target]);
1507          } catch (e) {
1508            log(elt, "Error during transition complete : " + formatError(e), "ERROR");
1509          }
1510        }, 20);
1511      }, delay);
1512    } else {
1513      log(elt, "Empty response, nothing to do here.", "DEBUG");
1514    }
1515  }
1516
1517  function maybeFilter(newContent, filter) {
1518    var asQuery;
1519    if ($.zepto) {
1520      var newDoc = createDocument(newContent);
1521      asQuery = $(newDoc).find('body').contents();
1522    } else {
1523      asQuery = $($.parseHTML(newContent, null, true));
1524    }
1525    if (filter) {
1526      return walkTree(asQuery, filter).contents();
1527    } else {
1528      return asQuery;
1529    }
1530  }
1531
1532  function walkTree(elt, filter) {
1533    return elt.filter(filter).add(elt.find(filter));
1534  }
1535
1536  function fixIDs(contentToSwap) {
1537    var fixedIDs = {};
1538    walkTree(contentToSwap, "[id]").each(function() {
1539      var originalID = $(this).attr("id");
1540      var fixedID;
1541      do {
1542        fixedID = "ic-fixed-id-" + uuid();
1543      } while ($("#" + fixedID).length > 0);
1544      fixedIDs[originalID] = fixedID;
1545      $(this).attr("id", fixedID);
1546    });
1547    walkTree(contentToSwap, "label[for]").each(function () {
1548      var originalID = $(this).attr("for");
1549      $(this).attr("for", fixedIDs[originalID] || originalID);
1550    });
1551    walkTree(contentToSwap, "*").each(function () {
1552      $.each(this.attributes, function () {
1553        if (this.value.indexOf("#") !== -1) {
1554          this.value = this.value.replace(/#([-_A-Za-z0-9]+)/g, function(match, originalID) {
1555            return "#" + (fixedIDs[originalID] || originalID);
1556          });
1557        }
1558      })
1559    });
1560  }
1561
1562  function getStyleTarget(elt) {
1563    var val = closestAttrValue(elt, 'ic-target');
1564    if (val && val.indexOf("this.style.") == 0) {
1565      return val.substr(11)
1566    } else {
1567      return null;
1568    }
1569  }
1570
1571  function getAttrTarget(elt) {
1572    var val = closestAttrValue(elt, 'ic-target');
1573    if (val && val.indexOf("this.") == 0) {
1574      return val.substr(5)
1575    } else {
1576      return null;
1577    }
1578  }
1579
1580  function fireICRequest(elt, alternateHandler) {
1581    elt = $(elt);
1582
1583    var triggerOrigin = elt;
1584    if (!elt.is(getICAttributeSelector('ic-src')) && getICAttribute(elt, 'ic-action') == undefined) {
1585      elt = elt.closest(getICAttributeSelector('ic-src'));
1586    }
1587
1588    var confirmText = closestAttrValue(elt, 'ic-confirm');
1589    if (confirmText) {
1590      if (!confirm(confirmText)) {
1591        return;
1592      }
1593    }
1594
1595    if("true" == closestAttrValue(elt, 'ic-disable-when-doc-hidden')) {
1596      if(document['hidden']) {
1597        return;
1598      }
1599    }
1600
1601    if("true" == closestAttrValue(elt, 'ic-disable-when-doc-inactive')) {
1602      if(!document.hasFocus()) {
1603        return;
1604      }
1605    }
1606
1607    if (elt.length > 0) {
1608      var icEventId = uuid();
1609      elt.data('ic-event-id', icEventId);
1610      var invokeRequest = function() {
1611
1612        // if an existing request is in flight for this element, push this request as the next to be executed
1613        if (elt.data('ic-request-in-flight') == true) {
1614          elt.data('ic-next-request', {"req" : invokeRequest});
1615          return;
1616        }
1617
1618        if (elt.data('ic-event-id') == icEventId) {
1619          var styleTarget = getStyleTarget(elt);
1620          var attrTarget = styleTarget ? null : getAttrTarget(elt);
1621          var verb = verbFor(elt);
1622          var url = getICAttribute(elt, 'ic-src');
1623          if (url) {
1624            var success = alternateHandler || function(data) {
1625              if (styleTarget) {
1626                elt.css(styleTarget, data);
1627              } else if (attrTarget) {
1628                elt.attr(attrTarget, data);
1629              } else {
1630                processICResponse(data, elt, false, url);
1631                if (verb != 'GET') {
1632                  refreshDependencies(getICAttribute(elt, 'ic-src'), elt);
1633                }
1634              }
1635            };
1636            var data = getParametersForElement(verb, elt, triggerOrigin);
1637            if(data) {
1638              handleRemoteRequest(elt, verb, url, data, success);
1639            }
1640          }
1641          maybeInvokeLocalAction(elt, "");
1642        }
1643      };
1644
1645      var triggerDelay = closestAttrValue(elt, 'ic-trigger-delay');
1646      if (triggerDelay) {
1647        setTimeout(invokeRequest, parseInterval(triggerDelay));
1648      } else {
1649        invokeRequest();
1650      }
1651    }
1652  }
1653
1654  function maybeInvokeLocalAction(elt, modifier) {
1655    var actions = getICAttribute(elt, 'ic' + modifier + '-action');
1656    if (actions) {
1657      invokeLocalAction(elt, actions, modifier);
1658    }
1659  }
1660
1661  function invokeLocalAction(elt, actions, modifier) {
1662    var actionTargetVal = closestAttrValue(elt, 'ic' + modifier + '-action-target');
1663    if(actionTargetVal === null && modifier !== "") {
1664      actionTargetVal = closestAttrValue(elt, 'ic-action-target');
1665    }
1666
1667    var target = null;
1668    if(actionTargetVal) {
1669      target = getTargetImpl(elt, 'ic-action-target');
1670    } else {
1671      target = getTarget(elt);
1672    }
1673    var actionArr = actions.split(";");
1674
1675    var actionsArr = [];
1676    var delay = 0;
1677
1678    $.each(actionArr, function(i, actionStr) {
1679      var actionDef = $.trim(actionStr);
1680      var action = actionDef;
1681      var actionArgs = [];
1682      if (actionDef.indexOf(":") > 0) {
1683        action = actionDef.substr(0, actionDef.indexOf(":"));
1684        actionArgs = computeArgs(actionDef.substr(actionDef.indexOf(":") + 1, actionDef.length));
1685      }
1686      if (action == "") {
1687        // ignore blanks
1688      } else if (action == "delay") {
1689        if (delay == null) {
1690          delay = 0;
1691        }
1692        delay += parseInterval(actionArgs[0] + "");  // custom interval increase
1693      } else {
1694        if (delay == null) {
1695          delay = 420; // 420ms default interval increase (400ms jQuery default + 20ms slop)
1696        }
1697        actionsArr.push([delay, makeApplyAction(target, action, actionArgs)]);
1698        delay = null;
1699      }
1700    });
1701
1702    delay = 0;
1703    $.each(actionsArr, function(i, action) {
1704      delay += action[0];
1705      setTimeout(action[1], delay);
1706    });
1707  }
1708
1709  function computeArgs(args) {
1710    try {
1711      return eval("[" + args + "]")
1712    } catch (e) {
1713      return [$.trim(args)];
1714    }
1715  }
1716
1717  function makeApplyAction(target, action, args) {
1718    return function() {
1719      var 

1719func = target[action] || window[action];
1720      if (func) {
1721        func.apply(target, args);
1722      } else {
1723        log(target, "Action " + action + " was not found", "ERROR");
1724      }
1725    };
1726  }
1727
1728  //============================================================
1729  // History Support
1730  //============================================================
1731
1732  function newIntercoolerHistory(storage, history, slotLimit, historyVersion) {
1733
1734    /* Constants */
1735    var HISTORY_SUPPORT_SLOT = 'ic-history-support';
1736    var HISTORY_SLOT_PREFIX = "ic-hist-elt-";
1737
1738    /* Instance Vars */
1739    var historySupportData = JSON.parse(storage.getItem(HISTORY_SUPPORT_SLOT));
1740    var _snapshot = null;
1741
1742    // Reset history if the history config has changed
1743    if (historyConfigHasChanged(historySupportData)) {
1744      log(getTargetForHistory($('body')), "Intercooler History configuration changed, clearing history", "INFO");
1745      clearHistory();
1746    }
1747
1748    if (historySupportData == null) {
1749      historySupportData = {
1750        slotLimit: slotLimit,
1751        historyVersion: historyVersion,
1752        lruList: []
1753      };
1754    }
1755
1756    /* Instance Methods  */
1757    function historyConfigHasChanged(historySupportData) {
1758      return historySupportData == null ||
1759        historySupportData.slotLimit != slotLimit ||
1760        historySupportData.historyVersion != historyVersion ||
1761        historySupportData.lruList == null
1762    }
1763
1764    function clearHistory() {
1765      var keys = [];
1766      for (var i = 0; i < storage.length; i++) {
1767        if (storage.key(i).indexOf(HISTORY_SLOT_PREFIX) == 0) {
1768          keys.push(storage.key(i));
1769        }
1770      }
1771      for (var j = 0; j < keys.length; j++) {
1772        storage.removeItem(keys[j]);
1773      }
1774      storage.removeItem(HISTORY_SUPPORT_SLOT);
1775      historySupportData = {
1776        slotLimit: slotLimit,
1777        historyVersion: historyVersion,
1778        lruList: []
1779      };
1780    }
1781
1782    function updateLRUList(url) {
1783      var lruList = historySupportData.lruList;
1784      var currentIndex = lruList.indexOf(url);
1785      var t = getTargetForHistory($('body'));
1786      // found in current list, shift it to the end
1787      if (currentIndex >= 0) {
1788        log(t, "URL found in LRU list, moving to end", "INFO");
1789        lruList.splice(currentIndex, 1);
1790        lruList.push(url);
1791      } else {
1792        // not found, add and shift if necessary
1793        log(t, "URL not found in LRU list, adding", "INFO");
1794        lruList.push(url);
1795        if (lruList.length > historySupportData.slotLimit) {
1796          var urlToDelete = lruList.shift();
1797          log(t, "History overflow, removing local history for " + urlToDelete, "INFO");
1798          storage.removeItem(HISTORY_SLOT_PREFIX + urlToDelete);
1799        }
1800      }
1801
1802      // save history metadata
1803      storage.setItem(HISTORY_SUPPORT_SLOT, JSON.stringify(historySupportData));
1804      return lruList;
1805    }
1806
1807    function saveHistoryData(restorationData) {
1808      var content = JSON.stringify(restorationData);
1809      try {
1810        storage.setItem(restorationData.id, content);
1811      } catch (e) {
1812        //quota error, nuke local cache
1813        try {
1814          clearHistory();
1815          storage.setItem(restorationData.id, content);
1816        } catch (e) {
1817          log(getTargetForHistory($('body')), "Unable to save intercooler history with entire history cleared, is something else eating " +
1818            "local storage? History Limit:" + slotLimit, "ERROR");
1819        }
1820      }
1821    }
1822
1823    function makeHistoryEntry(html, yOffset, url, title) {
1824      var restorationData = {
1825        "url": url,
1826        "id": HISTORY_SLOT_PREFIX + url,
1827        "content": html,
1828        "yOffset": yOffset,
1829        "timestamp": new Date().getTime(),
1830        "title": title
1831      };
1832      updateLRUList(url);
1833      // save to the history slot
1834      saveHistoryData(restorationData);
1835      return restorationData;
1836    }
1837
1838    function addPopStateHandler(windowToAdd) {
1839      if (windowToAdd.onpopstate == null || windowToAdd.onpopstate['ic-on-pop-state-handler'] != true) {
1840        var currentOnPopState = windowToAdd.onpopstate;
1841        windowToAdd.onpopstate = function(event) {
1842          triggerEvent(getTargetForHistory($('body')), 'handle.onpopstate.ic');
1843          if (!handleHistoryNavigation(event)) {
1844            if (currentOnPopState) {
1845              currentOnPopState(event);
1846            }
1847          }
1848          triggerEvent(getTargetForHistory($('body')), 'pageLoad.ic');
1849        };
1850        windowToAdd.onpopstate['ic-on-pop-state-handler'] = true;
1851      }
1852    }
1853
1854    function updateHistory() {
1855      if (_snapshot) {
1856        pushUrl(_snapshot.newUrl, currentUrl(), _snapshot.oldHtml, _snapshot.yOffset, _snapshot.oldTitle);
1857        _snapshot = null;
1858      }
1859    }
1860
1861    function pushUrl(newUrl, originalUrl, originalHtml, yOffset, originalTitle) {
1862
1863      var historyEntry = makeHistoryEntry(originalHtml, yOffset, originalUrl, originalTitle);
1864      history.replaceState({"ic-id": historyEntry.id}, "", "");
1865
1866      var t = getTargetForHistory($('body'));
1867      var restorationData = makeHistoryEntry(t.html(), window.pageYOffset, newUrl, document.title);
1868      history.pushState({'ic-id': restorationData.id}, "", newUrl);
1869
1870      triggerEvent(t, "pushUrl.ic", [t, restorationData]);
1871    }
1872
1873    function handleHistoryNavigation(event) {
1874      var data = event.state;
1875      if (data && data['ic-id']) {
1876        var historyData = JSON.parse(storage.getItem(data['ic-id']));
1877        if (historyData) {
1878          processICResponse(historyData["content"], getTargetForHistory($('body')), true);
1879          if (historyData["yOffset"]) {
1880            setTimeout(function () {
1881              window.scrollTo(0, historyData["yOffset"]);
1882            }, 100);
1883          }
1884          if (historyData["title"]) {
1885            document.title = historyData["title"];
1886          }
1887          return true;
1888        } else {
1889          $.get(currentUrl(), {'ic-restore-history': true}, function(data, status) {
1890            var newDoc = createDocument(data);
1891            var replacementHtml = getTargetForHistory(newDoc).html();
1892            processICResponse(replacementHtml, getTargetForHistory($('body')), true);
1893          });
1894        }
1895      }
1896      return false;
1897    }
1898
1899    function getTargetForHistory(elt) {
1900      var explicitHistoryTarget = elt.find(getICAttributeSelector('ic-history-elt'));
1901      if (explicitHistoryTarget.length > 0) {
1902        return explicitHistoryTarget;
1903      } else {
1904        return elt;
1905      }
1906    }
1907
1908    function snapshotForHistory(newUrl, oldTitle) {
1909      var t = getTargetForHistory($('body'));
1910      triggerEvent(t, "beforeHistorySnapshot.ic", [t]);
1911      _snapshot = {
1912        newUrl: newUrl,
1913        oldHtml: t.html(),
1914        yOffset: window.pageYOffset,
1915        oldTitle: oldTitle
1916      };
1917    }
1918
1919    function dumpLocalStorage() {
1920      var str = "";
1921      var keys = [];
1922      for (var x in storage) {
1923        keys.push(x);
1924      }
1925      keys.sort();
1926      var total = 0;
1927      for (var i in keys) {
1928        var size = (storage[keys[i]].length * 2);
1929        total += size;
1930        str += keys[i] + "=" + (size / 1024 / 1024).toFixed(2) + " MB\\n";
1931      }
1932      return str + "\\nTOTAL LOCAL STORAGE: " + (total / 1024 / 1024).toFixed(2) + " MB";
1933    }
1934
1935    function supportData() {
1936      return historySupportData;
1937    }
1938
1939    /* API */
1940    return {
1941      clearHistory: clearHistory,
1942      updateHistory: updateHistory,
1943      addPopStateHandler: addPopStateHandler,
1944      snapshotForHistory: snapshotForHistory,
1945      _internal: {
1946        addPopStateHandler: addPopStateHandler,