knockout-switch-case.min.js

/*
 SWITCH/CASE binding for Knockout http://knockoutjs.com/
 (c) Michael Best
 License: MIT (http://www.opensource.org/licenses/mit-license.php)
 Version 2.1.0
*/
(function(b,k){"function"===typeof define&&define.amd?define(["knockout"],k):k(b.ko)})(this,function(b){function k(a,f){var c=m(f.$switchValueAccessor());return"boolean"==typeof c?a?c:!c:"boolean"==typeof a?a:a instanceof Array?-1!==b.utils.arrayIndexOf(a,c):a==c}function v(a,b){return!k(a,b)}function w(a){return function(){return a}}function h(a,f,c){var n=f?v:k;a||(a="if");c||(c=w);return{flags:d[a].flags,init:function(f,g,l,x,e){if(!e.$switchSkipNextArray)throw Error("case binding must only be used with a switch binding");
if(e.$switchIndex!==p)throw Error("case binding cannot be nested");e.$switchIndex=e.$switchSkipNextArray.push(b.observable(!1))-1;e.$caseValue=b.observable();b.computed(function(){var a=e.$switchIndex,b=a===e.$switchSkipNextArray.length-1,c,f,d;a&&e.$switchSkipNextArray[a-1]()?(c=!1,f=!0):(c=m(g()),c===e.$else?(c=e.$switchDefault()||b,f=!1):d=f=c=n(c,e));e.$caseValue(c);e.$switchSkipNextArray[a](f);d?e.$switchDefault(!1):!f&&b&&e.$switchDefault(!0)},null,{disposeWhenNodeIsRemoved:f});if(d[a].init)return d[a].init(f,
c(e.$caseValue),l,x,e)},update:function(b,f,g,n,e){if(d[a].update)return d[a].update(b,c(e.$caseValue),g,n,e)}}}function r(a,b,c){g.allowedBindings[a]&&(g.allowedBindings[c]=!0);return h(a,"casenot"===b)}function y(a,b,c){return r(b,a,c)}function s(a,b){d[a]=h("if",b);t[a]=!1;g.allowedBindings[a]=!0;d[a].makeSubkeyHandler=y;d[a].getNamespacedHandler=r}var p;if(!b.virtualElements)throw Error("Switch-case requires at least Knockout 2.1");var g=b.virtualElements,q=b.bindingFlags||{},t=b.bindingRewriteValidators||
b.jsonExpressionRewriting.bindingRewriteValidators,m=b.utils.unwrapObservable,d=b.bindingHandlers,u={};d["switch"]={flags:q.contentBind|q.canUseVirtual|q.noValue,init:function(a,f,c,d,k){var h={$switchSkipNextArray:[],$switchValueAccessor:f,$switchDefault:b.observable(!0),$default:u,$else:u},l=[];b.computed(function(){var a=m(f());h.$value=a;b.utils.arrayForEach(l,function(b){b.$value=a})},null,{disposeWhenNodeIsRemoved:a});for(c=g.firstChild(a);a=c;)switch(c=g.nextSibling(a),a.nodeType){case 1:case 8:d=
k.extend(h),d.$switchIndex=p,b.applyBindings(d,a),d.$switchIndex!==p&&l.push(d)}return{controlsDescendantBindings:!0}},preprocess:function(a){return a||"true"}};t["switch"]=!1;g.allowedBindings["switch"]=!0;s("case");s("casenot",!0);d["case.visible"]=h("visible");d["casenot.visible"]=h("visible",!0);d["switch"].makeCaseHandler=h});