/* - formUnload.js - */
// http://www.pienelleparasta.fi/portal_javascripts/formUnload.js?original=1
if(!window.beforeunload)(function(){var BeforeUnloadHandler=function(){var self=this;this.message=window.form_modified_message||"Your form has not been saved. All changes you have made will be lost.";this.forms=[];this.chkId=[];this.chkType=new this.CheckType();this.handlers=[this.isAnyFormChanged];this.submitting=false;this.execute=function(event){if(self.submitting) return;if(!event) event=window.event;for(var i=0;i<self.handlers.length;i++){var fn=self.handlers[i];var message=message||fn.apply(self)}
if(message===true) message=self.message;if(message===false) message=undefined;if(event&&message){event.returnValue=message}
return message}
this.execute.tool=this}
var Class=BeforeUnloadHandler.prototype;Class.isAnyFormChanged=function(){for(var i=0;i<this.forms.length;i++){var form=this.forms[i];if(this.isElementChanged(form)){return true}}
return false}
Class.addHandler=function(fn){this.handlers.push(fn)}
Class.onsubmit=function(){var tool=window.onbeforeunload&&window.onbeforeunload.tool;tool.submitting=true}
Class.addForm=function(form){for(var i=0;i<this.forms.length;i++){if(this.forms[i]==form) return}
this.forms.push(form);form.onsubmit=this.onsubmit;var elements=form.getElementsByTagName('input');for(var j=0;j<elements.length;j++){var ele=elements[j];if(ele.type=='hidden'){ele.setAttribute('originalValue',ele.defaultValue)}}}
Class.addForms=function(){for(var i=0;i<arguments.length;i++){var element=arguments[i];if(!element) continue;if(element.tagName=='FORM'){this.addForm(element)}
else{var forms=element.getElementsByTagName('form');for(var j=0;j<forms.length;j++){this.addForm(forms[j])}}}}
Class.removeForms=function(){for(var i=0;i<arguments.length;i++){var element=arguments[i];if(!element) continue;if(element.tagName=='FORM'){for(var j=0;j<arguments.length;j++){if(this.forms[j]==element){this.forms.splice(j--,1);element.onsubmit=null}}} else{var forms=element.getElementsByTagName('form');for(var j=0;j<forms.length;j++){this.removeForms(forms[j])}}}}
Class.CheckType=function(){};var c=Class.CheckType.prototype;c.checkbox=c.radio=function(ele){return ele.checked!=ele.defaultChecked}
c.password=c.textarea=c.text=function(ele){return ele.value!=ele.defaultValue}
c.hidden=function(ele){var orig=ele.getAttribute("originalValue");return orig&&(ele.value!=orig)}
c['select-one']=function(ele){for(var i=0 ;i<ele.length;i++){var opt=ele.options[i];if(opt.selected!=opt.defaultSelected){if(i===0&&opt.selected) continue;return true}}
return false}
c['select-multiple']=function(ele){for(var i=0 ;i<ele.length;i++){var opt=ele.options[i];if(opt.selected!=opt.defaultSelected){return true}}
return false}
Class.chk_form=function(form){var elements=form.elements;for(var i=0;i<elements.length;i++){var element=elements[i];if(this.isElementChanged(element)){return true}}
return false}
Class.isElementChanged=function(ele){var method=ele.id&&this.chkId[ele.id];if(!method&&ele.type&&ele.name)
method=this.chkType[ele.type];if(!method&&ele.tagName)
method=this['chk_'+ele.tagName.toLowerCase()];return method?method.apply(this,[ele]):false};window.onbeforeunload=new BeforeUnloadHandler().execute;registerPloneFunction(function(){if(!W3CDOM){return false};var tool=window.onbeforeunload&&window.onbeforeunload.tool;var content=getContentArea();if(tool&&content){var forms=cssQuery('form.enableUnloadProtection');for(var i=0;i<forms.length;i++){tool.addForm(forms[i])}}})})();