kibo.min.js

var Kibo=function(element){this.element=element||window.document;this.initialize()};
Kibo.KEY_NAMES_BY_CODE={8:"backspace",9:"tab",13:"enter",16:"shift",17:"ctrl",18:"alt",20:"caps_lock",27:"esc",32:"space",33:"page_up",34:"page_down",35:"end",36:"home",37:"left",38:"up",39:"right",40:"down",45:"insert",46:"delete",48:"0",49:"1",50:"2",51:"3",52:"4",53:"5",54:"6",55:"7",56:"8",57:"9",65:"a",66:"b",67:"c",68:"d",69:"e",70:"f",71:"g",72:"h",73:"i",74:"j",75:"k",76:"l",77:"m",78:"n",79:"o",80:"p",81:"q",82:"r",83:"s",84:"t",85:"u",86:"v",87:"w",88:"x",89:"y",90:"z",112:"f1",113:"f2",
114:"f3",115:"f4",116:"f5",117:"f6",118:"f7",119:"f8",120:"f9",121:"f10",122:"f11",123:"f12",144:"num_lock"};Kibo.KEY_CODES_BY_NAME={};(function(){for(var key in Kibo.KEY_NAMES_BY_CODE)if(Object.prototype.hasOwnProperty.call(Kibo.KEY_NAMES_BY_CODE,key))Kibo.KEY_CODES_BY_NAME[Kibo.KEY_NAMES_BY_CODE[key]]=+key})();Kibo.MODIFIERS=["shift","ctrl","alt"];Kibo.WILDCARD_TYPES=["arrow","number","letter","f"];
Kibo.WILDCARDS={arrow:[37,38,39,40],number:[48,49,50,51,52,53,54,55,56,57],letter:[65,66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90],f:[112,113,114,115,116,117,118,119,120,121,122,123]};
Kibo.assert=function(expression,exception){exception=exception||{};exception.name=exception.name||"Exception raised";exception.message=exception.message||"an error has occurred.";try{if(!expression)throw exception;}catch(error){if(typeof console!=="undefined"&&console.log)console.log(error.name+": "+error.message);else window.alert(error.name+": "+error.message)}};
Kibo.registerEvent=function(){if(document.addEventListener)return function(element,eventName,func){element.addEventListener(eventName,func,false)};else if(document.attachEvent)return function(element,eventName,func){element.attachEvent("on"+eventName,func)}}();
Kibo.unregisterEvent=function(){if(document.removeEventListener)return function(element,eventName,func){element.removeEventListener(eventName,func,false)};else if(document.detachEvent)return function(element,eventName,func){element.detachEvent("on"+eventName,func)}}();Kibo.isArray=function(what){return!!(what&&what.splice)};Kibo.isString=function(what){return typeof what==="string"};
Kibo.arrayIncludes=function(){if(Array.prototype.indexOf)return function(haystack,needle){return haystack.indexOf(needle)!==-1};else return function(haystack,needle){for(var i=0;i<haystack.length;i++)if(haystack[i]===needle)return true;return false}}();Kibo.trimString=function(string){return string.replace(/^\s+|\s+$/g,"")};Kibo.neatString=function(string){return Kibo.trimString(string).replace(/\s+/g," ")};Kibo.capitalize=function(string){return string.toLowerCase().replace(/^./,function(match){return match.toUpperCase()})};
Kibo.isModifier=function(key){return Kibo.arrayIncludes(Kibo.MODIFIERS,key)};
Kibo.prototype.initialize=function(){var i,that=this;this.lastKeyCode=-1;this.lastModifiers={};for(i=0;i<Kibo.MODIFIERS.length;i++)this.lastModifiers[Kibo.MODIFIERS[i]]=false;this.keysDown={any:[]};this.keysUp={any:[]};for(i=0;i<Kibo.WILDCARD_TYPES.length;i++){this.keysDown["any "+Kibo.WILDCARD_TYPES[i]]=[];this.keysUp["any "+Kibo.WILDCARD_TYPES[i]]=[]}this.downHandler=this.handler("down");this.upHandler=this.handler("up");Kibo.registerEvent(this.element,"keydown",this.downHandler);Kibo.registerEvent(this.element,
"keyup",this.upHandler);Kibo.registerEvent(window,"unload",function unloader(){Kibo.unregisterEvent(that.element,"keydown",that.downHandler);Kibo.unregisterEvent(that.element,"keyup",that.upHandler);Kibo.unregisterEvent(window,"unload",unloader)})};
Kibo.prototype.matchingKeys=function(registeredKeys){var i,j,keyCombination,match,result=[];for(var registeredKey in registeredKeys)if(Object.prototype.hasOwnProperty.call(registeredKeys,registeredKey)){keyCombination=Kibo.trimString(registeredKey).split(" ");if(keyCombination.length&&keyCombination[0]!=="any"){match=true;for(j=0;j<keyCombination.length;j++)match=match&&(Kibo.isModifier(keyCombination[j])?this.lastKey(keyCombination[j]):this.lastKey()===keyCombination[j]);if(match)result.push(registeredKey)}}return result};
Kibo.prototype.handler=function(upOrDown){var that=this;return function(e){var i,j,matchingKeys,registeredKeys;e=e||window.event;that.lastKeyCode=e.keyCode;for(i=0;i<Kibo.MODIFIERS.length;i++)that.lastModifiers[Kibo.MODIFIERS[i]]=e[Kibo.MODIFIERS[i]+"Key"];if(Kibo.arrayIncludes(Kibo.MODIFIERS,Kibo.keyName(that.lastKeyCode)))that.lastModifiers[Kibo.keyName(that.lastKeyCode)]=true;registeredKeys=that["keys"+Kibo.capitalize(upOrDown)];matchingKeys=that.matchingKeys(registeredKeys);for(i=0;i<registeredKeys.any.length;i++)if(registeredKeys.any[i](e)===
false&&e.preventDefault)e.preventDefault();for(i=0;i<Kibo.WILDCARD_TYPES.length;i++)if(Kibo.arrayIncludes(Kibo.WILDCARDS[Kibo.WILDCARD_TYPES[i]],that.lastKeyCode))for(j=0;j<registeredKeys["any "+Kibo.WILDCARD_TYPES[i]].length;j++)if(registeredKeys["any "+Kibo.WILDCARD_TYPES[i]][j](e)===false&&e.preventDefault)e.preventDefault();for(i=0;i<matchingKeys.length;i++)for(j=0;j<registeredKeys[matchingKeys[i]].length;j++)if(registeredKeys[matchingKeys[i]][j](e)===false&&e.preventDefault)e.preventDefault()}};
Kibo.prototype.registerKeys=function(upOrDown,newKeys,func){var i,registeredKeys=this["keys"+Kibo.capitalize(upOrDown)];if(!Kibo.isArray(newKeys))newKeys=[newKeys];for(i=0;i<newKeys.length;i++){Kibo.assert(Kibo.isString(newKeys[i]),{name:"Type error",message:"expected string or array of strings."});newKeys[i]=Kibo.neatString(newKeys[i]);if(Kibo.isArray(registeredKeys[newKeys[i]]))registeredKeys[newKeys[i]].push(func);else registeredKeys[newKeys[i]]=[func]}return this};
Kibo.prototype.unregisterKeys=function(upOrDown,newKeys,func){var i,j,registeredKeys=this["keys"+Kibo.capitalize(upOrDown)];if(!Kibo.isArray(newKeys))newKeys=[newKeys];for(i=0;i<newKeys.length;i++){Kibo.assert(Kibo.isString(newKeys[i]),{name:"Type error",message:"expected string or array of strings."});newKeys[i]=Kibo.neatString(newKeys[i]);if(func===null)delete registeredKeys[newKeys[i]];else if(Kibo.isArray(registeredKeys[newKeys[i]]))for(j=0;j<registeredKeys[newKeys[i]].length;j++)if(String(registeredKeys[newKeys[i]][j])===
String(func)){registeredKeys[newKeys[i]].splice(j,1);break}}return this};Kibo.prototype.delegate=function(action,keys,func){return func!==null?this.registerKeys(action,keys,func):this.unregisterKeys(action,keys,func)};Kibo.prototype.down=function(keys,func){return this.delegate("down",keys,func)};Kibo.prototype.up=function(keys,func){return this.delegate("up",keys,func)};Kibo.keyName=function(keyCode){return Kibo.KEY_NAMES_BY_CODE[keyCode+""]};Kibo.keyCode=function(keyName){return+Kibo.KEY_CODES_BY_NAME[keyName]};
Kibo.prototype.lastKey=function(modifier){if(!modifier)return Kibo.keyName(this.lastKeyCode);Kibo.assert(Kibo.arrayIncludes(Kibo.MODIFIERS,modifier),{name:"Modifier error",message:"invalid modifier "+modifier+" (valid modifiers are: "+Kibo.MODIFIERS.join(", ")+")."});return this.lastModifiers[modifier]};