chosen/chosen/chosen.proto.min.js

/*!

Chosen for Protoype.js
by Patrick Filler for Harvest

Copyright (c) 2011 Harvest

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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*/
(function(){var Chosen,OptionsParser,get_side_border_padding,root;var __bind=function(fn,me){return function(){return fn.apply(me,arguments);};};root=typeof exports!=="undefined"&&exports!==null?exports:this;Chosen=(function(){function Chosen(elmn){this.set_default_values();this.form_field=elmn;this.is_multiple=this.form_field.multiple;this.default_text_default=this.form_field.multiple?"Select Some Options":"Select an Option";this.set_up_html();this.register_observers();}Chosen.prototype.set_default_values=function(){this.click_test_action=__bind(function(evt){return this.test_active_click(evt);},this);this.active_field=false;this.mouse_on_container=false;this.results_showing=false;this.result_highlighted=null;this.result_single_selected=null;this.choices=0;this.single_temp=new Template('<a href="#" class="chzn-single"><span>#{default}</span><div><b></b></div></a><div class="chzn-drop" style="left:-9000px;"><div class="chzn-search"><input type="text" /></div><ul class="chzn-results"></ul></div>');this.multi_temp=new Template('<ul class="chzn-choices"><li class="search-field"><input type="text" value="#{default}" class="default" style="width:25px;" /></li></ul><div class="chzn-drop" style="left:-9000px;"><ul class="chzn-results"></ul></div>');this.choice_temp=new Template('<li class="search-choice" id="#{id}"><span>#{choice}</span><a href="#" class="search-choice-close" rel="#{position}"></a></li>');return this.no_results_temp=new Template('<li class="no-results">No results match "<span>#{terms}</span>"</li>');};Chosen.prototype.set_up_html=function(){var base_template,container_props,dd_top,dd_width,sf_width;this.container_id=this.form_field.id+"_chzn";this.f_width=this.form_field.getStyle("width")?parseInt(this.form_field.getStyle("width"),10):this.form_field.getWidth();container_props={id:this.container_id,"class":"chzn-container",style:"width: "+this.f_width+"px"};this.default_text=this.form_field.readAttribute("title")?this.form_field.readAttribute("title"):this.default_text_default;base_template=this.is_multiple?new Element("div",container_props).update(this.multi_temp.evaluate({"default":this.default_text})):new Element("div",container_props).update(this.single_temp.evaluate({"default":this.default_text}));this.form_field.hide().insert({after:base_template});this.container=$(this.container_id);this.container.addClassName("chzn-container-"+(this.is_multiple?"multi":"single"));this.dropdown=this.container.down("div.chzn-drop");dd_top=this.container.getHeight();dd_width=this.f_width-get_side_border_padding(this.dropdown);this.dropdown.setStyle({width:dd_width+"px",top:dd_top+"px"});this.search_field=this.container.down("input");this.search_results=this.container.down("ul.chzn-results");this.search_field_scale();this.search_no_results=this.container.down("li.no-results");if(this.is_multiple){this.search_choices=this.container.down("ul.chzn-choices");this.search_container=this.container.down("li.search-field");}else{this.search_container=this.container.down("div.chzn-search");this.selected_item=this.container.down(".chzn-single");sf_width=dd_width-get_side_border_padding(this.search_container)-get_side_border_padding(this.search_field);this.search_field.setStyle({width:sf_width+"px"});}this.results_build();return this.set_tab_index();};Chosen.prototype.register_observers=function(){this.container.observe("click",__bind(function(evt){return this.container_click(evt);},this));this.container.observe("mouseenter",__bind(function(evt){return this.mouse_enter(evt);},this));this.container.observe("mouseleave",__bind(function(evt){return this.mouse_leave(evt);},this));this.search_results.observe("click",__bind(function(evt){return this.search_results_click(evt);},this));this.search_results.observe("mouseover",__bind(function(evt){return this.search_results_mouseover(evt);},this));this.search_results.observe("mouseout",__bind(function(evt){return this.search_results_mouseout(evt);},this));this.form_field.observe("liszt:updated",__bind(function(evt){return this.results_update_field(evt);},this));this.search_field.observe("blur",__bind(function(evt){return this.input_blur(evt);},this));this.search_field.observe("keyup",__bind(function(evt){return this.keyup_checker(evt);},this));this.search_field.observe("keydown",__bind(function(evt){return this.keydown_checker(evt);},this));if(this.is_multiple){this.search_choices.observe("click",__bind(function(evt){return this.choices_click(evt);},this));return this.search_field.observe("focus",__bind(function(evt){return this.input_focus(evt);},this));}else{return this.selected_item.observe("focus",__bind(function(evt){return this.activate_field(evt);},this));}};Chosen.prototype.container_click=function(evt){if(evt&&evt.type==="click"){evt.stop();if(!this.pending_destroy_click){if(!this.active_field){if(this.is_multiple){this.search_field.clear();}document.observe("click",this.click_test_action);this.results_show();}else{if(!this.is_multiple&&evt&&(evt.target===this.selected_item||evt.target.up("a.chzn-single"))){this.results_show();}}return this.activate_field();}else{return this.pending_destroy_click=false;}}};Chosen.prototype.mouse_enter=function(){return this.mouse_on_container=true;};Chosen.prototype.mouse_leave=function(){return this.mouse_on_container=false;};Chosen.prototype.input_focus=function(evt){if(!this.active_field){return setTimeout(this.container_click.bind(this),50);}};Chosen.prototype.input_blur=function(evt){if(!this.mouse_on_container){this.active_field=false;return setTimeout(this.blur_test.bind(this),100);}};Chosen.prototype.blur_test=function(evt){if(!this.active_field&&this.container.hasClassName("chzn-container-active")){return this.close_field();}};Chosen.prototype.close_field=function(){document.stopObserving("click",this.click_test_action);if(!this.is_multiple){this.selected_item.tabIndex=this.search_field.tabIndex;this.search_field.tabIndex=-1;}this.active_field=false;this.results_hide();this.container.removeClassName("chzn-container-active");this.winnow_results_clear();this.clear_backstroke();this.show_search_field_default();return this.search_field_scale();};Chosen.prototype.activate_field=function(){if(!this.is_multiple&&!this.active_field){this.search_field.tabIndex=this.selected_item.tabIndex;this.selected_item.tabIndex=-1;}this.container.addClassName("chzn-container-active");this.active_field=true;this.search_field.value=this.search_field.value;return this.search_field.focus();};Chosen.prototype.test_active_click=function(evt){if(evt.target.up("#"+this.container.id)){return this.active_field=true;}else{return this.close_field();}};Chosen.prototype.results_build=function(){var content,data,startTime,_i,_len,_ref;startTime=new Date();this.parsing=true;this.results_data=OptionsParser.select_to_array(this.form_field);if(this.is_multiple&&this.choices>0){this.search_choices.select("li.search-choice").invoke("remove");this.choices=0;}else{if(!this.is_multiple){this.selected_item.down("span").update(this.default_text);}}content="";_ref=this.results_data;for(_i=0,_len=_ref.length;_i<_len;_i++){data=_ref[_i];if(data.group){content+=this.result_add_group(data);}else{content+=this.result_add_option(data);if(data.selected&&this.is_multiple){this.choice_build(data);}else{if(data.selected&&!this.is_multiple){this.selected_item.down("span").update(data.text);}}}}this.show_search_field_default();this.search_results.update(content);return this.parsing=false;};Chosen.prototype.result_add_group=function(group){if(!group.disabled){group.dom_id=this.form_field.id+"chzn_g_"+group.id;return'<li id="'+group.dom_id+'" class="group-result">'+group.label.escapeHTML()+"</li>";}else{return"";}};Chosen.prototype.result_add_option=function(option){var classes;if(!option.disabled){option.dom_id=this.form_field.id+"chzn_o_"+option.id;classes=option.selected&&this.is_multiple?[]:["active-result"];if(option.selected){classes.push("result-selected");}if(option.group_id>=0){classes.push("group-option");}return'<li id="'+option.dom_id+'" class="'+classes.join(" ")+'">'+option.text.escapeHTML()+"</li>";}else{return"";}};Chosen.prototype.results_update_field=function(){this.result_clear_highlight();this.result_single_selected=null;return this.results_build();};Chosen.prototype.result_do_highlight=function(el){var high_bottom,high_top,maxHeight,visible_bottom,visible_top;this.result_clear_highlight();this.result_highlight=el;this.result_highlight.addClassName("highlighted");maxHeight=parseInt(this.search_results.getStyle("maxHeight"),10);visible_top=this.search_results.scrollTop;visible_bottom=maxHeight+visible_top;high_top=this.result_highlight.positionedOffset().top;high_bottom=high_top+this.result_highlight.getHeight();if(high_bottom>=visible_bottom){return this.search_results.scrollTop=(high_bottom-maxHeight)>0?high_bottom-maxHeight:0;}else{if(high_top<visible_top){return this.search_results.scrollTop=high_top;}}};Chosen.prototype.result_clear_highlight=function(){if(this.result_highlight){this.result_highlight.removeClassName("highlighted");}return this.result_highlight=null;};Chosen.prototype.results_show=function(){var dd_top;if(!this.is_multiple){this.selected_item.addClassName("chzn-single-with-drop");if(this.result_single_selected){this.result_do_highlight(this.result_single_selected);}}dd_top=this.is_multiple?this.container.getHeight():this.container.getHeight()-1;this.dropdown.setStyle({top:dd_top+"px",left:0});this.results_showing=true;this.search_field.focus();this.search_field.value=this.search_field.value;return this.winnow_results();};Chosen.prototype.results_hide=function(){if(!this.is_multiple){this.selected_item.removeClassName("chzn-single-with-drop");}this.result_clear_highlight();this.dropdown.setStyle({left:"-9000px"});return this.results_showing=false;};Chosen.prototype.set_tab_index=function(el){var ti;if(this.form_field.tabIndex){ti=this.form_field.tabIndex;this.form_field.tabIndex=-1;if(this.is_multiple){return this.search_field.tabIndex=ti;}else{this.selected_item.tabIndex=ti;return this.search_field.tabIndex=-1;}}};Chosen.prototype.show_search_field_default=function(){if(this.is_multiple&&this.choices<1&&!this.active_field){this.search_field.value=this.default_text;return this.search_field.addClassName("default");}else{this.search_field.value="";return this.search_field.removeClassName("default");}};Chosen.prototype.search_results_click=function(evt){var target;target=evt.target.hasClassName("active-result")?evt.target:evt.target.up(".active-result");if(target){this.result_highlight=target;return this.result_select();}};Chosen.prototype.search_results_mouseover=function(evt){var target;target=evt.target.hasClassName("active-result")?evt.target:evt.target.up(".active-result");if(target){return this.result_do_highlight(target);}};Chosen.prototype.search_results_mouseout=function(evt){if(evt.target.hasClassName("active-result")||evt.target.up(".active-result")){return this.result_clear_highlight();}};Chosen.prototype.choices_click=function(evt){evt.preventDefault();if(this.active_field&&!(evt.target.hasClassName("search-choice")||evt.target.up(".search-choice"))&&!this.results_showing){return this.results_show();}};Chosen.prototype.choice_build=function(item){var choice_id,link;choice_id=this.form_field.id+"_chzn_c_"+item.id;this.choices+=1;this.search_container.insert({before:this.choice_temp.evaluate({id:choice_id,choice:item.text,position:item.id})});link=$(choice_id).down("a");return link.observe("click",__bind(function(evt){return this.choice_destroy_link_click(evt);},this));};Chosen.prototype.choice_destroy_link_click=function(evt){evt.preventDefault();this.pending_destroy_click=true;return this.choice_destroy(evt.target);};Chosen.prototype.choice_destroy=function(link){this.choices-=1;this.show_search_field_default();if(this.is_multiple&&this.choices>0&&this.search_field.value.length<1){this.results_hide();}this.result_deselect(link.readAttribute("rel"));return link.up("li").remove();};Chosen.prototype.result_select=function(){var high,item,position;if(this.result_highlight){high=this.result_highlight;this.result_clear_highlight();high.addClassName("result-selected");if(this.is_multiple){this.result_deactivate(high);}else{this.result_single_selected=high;}position=high.id.substr(high.id.lastIndexOf("_")+1);item=this.results_data[position];item.selected=true;this.form_field.options[item.select_index].selected=true;if(this.is_multiple){this.choice_build(item);}else{this.selected_item.down("span").update(item.text);}this.results_hide();this.search_field.value="";if(typeof Event.simulate==="function"){this.form_field.simulate("change");}return this.search_field_scale();}};Chosen.prototype.result_activate=function(el){return el.addClassName("active-result").show();};Chosen.prototype.result_deactivate=function(el){return el.removeClassName("active-result").hide();};Chosen.prototype.result_deselect=function(pos){var result,result_data;result_data=this.results_data[pos];result_data.selected=false;this.form_field.options[result_data.select_index].selected=false;result=$(this.form_field.id+"chzn_o_"+pos);result.removeClassName("result-selected").addClassName("active-result").show();this.result_clear_highlight();this.winnow_results();if(typeof Event.simulate==="function"){this.form_field.simulate("change");}return this.search_field_scale();};Chosen.prototype.results_search=function(evt){if(this.results_showing){return this.winnow_results();}else{return this.results_show();}};Chosen.prototype.winnow_results=function(){var found,option,part,parts,regex,result_id,results,searchText,startTime,startpos,text,zregex,_i,_j,_len,_len2,_ref;startTime=new Date();this.no_results_clear();results=0;searchText=this.search_field.value===this.default_text?"":this.search_field.value.strip();regex=new RegExp("^"+searchText.replace(/[-[\]{}()*+?.,\\^$|#\s]/g,"\\$&"),"i");zregex=new RegExp(searchText.replace(/[-[\]{}()*+?.,\\^$|#\s]/g,"\\$&"),"i");_ref=this.results_data;for(_i=0,_len=_ref.length;_i<_len;_i++){option=_ref[_i];if(!option.disabled){if(option.group){$(option.dom_id).hide();}else{if(!(this.is_multiple&&option.selected)){found=false;result_id=this.form_field.id+"chzn_o_"+option.id;if(regex.test(option.text)){found=true;results+=1;}else{if(option.text.indexOf(" ")>=0||option.text.indexOf("[")===0){parts=option.text.replace(/\[|\]/g,"").split(" ");if(parts.length){for(_j=0,_len2=parts.length;_j<_len2;_j++){part=parts[_j];if(regex.test(part)){found=true;results+=1;}}}}}if(found){if(searchText.length){startpos=option.text.search(zregex);text=option.text.substr(0,startpos+searchText.length)+"</em>"+option.text.substr(startpos+searchText.length);text=text.substr(0,startpos)+"<em>"+text.substr(startpos);}else{text=option.text;}if($(result_id).innerHTML!==text){$(result_id).update(text);}this.result_activate($(result_id));if(option.group_id!=null){$(this.results_data[option.group_id].dom_id).show();}}else{if($(result_id)===this.result_highlight){this.result_clear_highlight();}this.result_deactivate($(result_id));}}}}}if(results<1&&searchText.length){return this.no_results(searchText);}else{return this.winnow_results_set_highlight();}};Chosen.prototype.winnow_results_clear=function(){var li,lis,_i,_len,_results;this.search_field.clear();lis=this.search_results.select("li");_results=[];for(_i=0,_len=lis.length;_i<_len;_i++){li=lis[_i];_results.push(li.hasClassName("group-result")?li.show():!this.is_multiple||!li.hasClassName("result-selected")?this.result_activate(li):void 0);}return _results;};Chosen.prototype.winnow_results_set_highlight=function(){var do_high;if(!this.result_highlight){do_high=this.search_results.down(".active-result");if(do_high){return this.result_do_highlight(do_high);}}};Chosen.prototype.no_results=function(terms){return this.search_results.insert(this.no_results_temp.evaluate({terms:terms.escapeHTML()}));};Chosen.prototype.no_results_clear=function(){var nr,_results;nr=null;_results=[];while(nr=this.search_results.down(".no-results")){_results.push(nr.remove());}return _results;};Chosen.prototype.keydown_arrow=function(){var actives,nexts,sibs;actives=this.search_results.select("li.active-result");if(actives.length){if(!this.result_highlight){this.result_do_highlight(actives.first());}else{if(this.results_showing){sibs=this.result_highlight.nextSiblings();nexts=sibs.intersect(actives);if(nexts.length){this.result_do_highlight(nexts.first());}}}if(!this.results_showing){return this.results_show();}}};Chosen.prototype.keyup_arrow=function(){var actives,prevs,sibs;if(!this.results_showing&&!this.is_multiple){return this.results_show();}else{if(this.result_highlight){sibs=this.result_highlight.previousSiblings();actives=this.search_results.select("li.active-result");prevs=sibs.intersect(actives);if(prevs.length){return this.result_do_highlight(prevs.first());}else{if(this.choices>0){this.results_hide();}return this.result_clear_highlight();}}}};Chosen.prototype.keydown_backstroke=function(){if(this.pending_backstroke){this.choice_destroy(this.pending_backstroke.down("a"));return this.clear_backstroke();}else{this.pending_backstroke=this.search_container.siblings("li.search-choice").last();return this.pending_backstroke.addClassName("search-choice-focus");}};Chosen.prototype.clear_backstroke=function(){if(this.pending_backstroke){this.pending_backstroke.removeClassName("search-choice-focus");}return this.pending_backstroke=null;};Chosen.prototype.keyup_checker=function(evt){var stroke,_ref;stroke=(_ref=evt.which)!=null?_ref:evt.keyCode;this.search_field_scale();switch(stroke){case 8:if(this.is_multiple&&this.backstroke_length<1&&this.choices>0){return this.keydown_backstroke();}else{if(!this.pending_backstroke){return this.results_search();}}break;case 13:evt.preventDefault();if(this.results_showing){return this.result_select();}break;case 9:case 13:case 38:case 40:case 16:break;default:return this.results_search();}};Chosen.prototype.keydown_checker=function(evt){var stroke,_ref;stroke=(_ref=evt.which)!=null?_ref:evt.keyCode;this.search_field_scale();if(stroke!==8&&this.pending_backstroke){this.clear_backstroke();}switch(stroke){case 8:return this.backstroke_length=this.search_field.value.length;case 9:return this.mouse_on_container=false;case 13:return evt.preventDefault();case 38:evt.preventDefault();return this.keyup_arrow();case 40:return this.keydown_arrow();}};Chosen.prototype.search_field_scale=function(){var dd_top,div,h,style,style_block,styles,w;if(this.is_multiple){h=0;w=0;style_block="position:absolute; left: -1000px; top: -1000px; display:none;";styles=["font-size","font-style","font-weight","font-family","line-height","text-transform","letter-spacing"];for(style in styles){style_block+=style+":"+this.search_field.getStyle(style)+";";}div=new Element("div",{style:style_block}).update(this.search_field.value);document.body.appendChild(div);w=Element.measure(div,"width")+25;div.remove();if(w>this.f_width-10){w=this.f_width-10;}this.search_field.setStyle({width:w+"px"});dd_top=this.container.getHeight();return this.dropdown.setStyle({top:dd_top+"px"});}};return Chosen;})();root.Chosen=Chosen;document.observe("dom:loaded",function(evt){var select,selects,_i,_len,_results;selects=$$(".chzn-select");_results=[];for(_i=0,_len=selects.length;_i<_len;_i++){select=selects[_i];_results.push(new Chosen(select));}return _results;});get_side_border_padding=function(elmt){var layout,side_border_padding;layout=new Element.Layout(elmt);return side_border_padding=layout.get("border-left")+layout.get("border-right")+layout.get("padding-left")+layout.get("padding-right");};root.get_side_border_padding=get_side_border_padding;root=typeof exports!=="undefined"&&exports!==null?exports:this;OptionsParser=(function(){function OptionsParser(){this.group_index=0;this.sel_index=0;this.parsed=[];}OptionsParser.prototype.add_node=function(child){if(child.nodeName==="OPTGROUP"){return this.add_group(child);}else{return this.add_option(child);}};OptionsParser.prototype.add_group=function(group){var group_id,option,_i,_len,_ref;group_id=this.sel_index+this.group_index;this.parsed.push({id:group_id,group:true,label:group.label,position:this.group_index,children:0,disabled:group.disabled});_ref=group.childNodes;for(_i=0,_len=_ref.length;_i<_len;_i++){option=_ref[_i];this.add_option(option,group_id,group.disabled);}return this.group_index+=1;};OptionsParser.prototype.add_option=function(option,group_id,group_disabled){var _ref;if(option.nodeName==="OPTION"&&(this.sel_index>0||option.text!=="")){if(group_id||group_id===0){this.parsed[group_id].children+=1;}this.parsed.push({id:this.sel_index+this.group_index,select_index:this.sel_index,value:option.value,text:option.text,selected:option.selected,disabled:(_ref=group_disabled===true)!=null?_ref:{group_disabled:option.disabled},group_id:group_id});return this.sel_index+=1;}};return OptionsParser;})();OptionsParser.select_to_array=function(select){var child,parser,_i,_len,_ref;parser=new OptionsParser();_ref=select.childNodes;for(_i=0,_len=_ref.length;_i<_len;_i++){child=_ref[_i];parser.add_node(child);}return parser.parsed;};root.OptionsParser=OptionsParser;}).call(this);