snappymail/vendors/knockout-projections/knockout-projections-1.0.0.min.js

/*! Knockout projections plugin
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Copyright (c) Microsoft Corporation
All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 
THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT.
See the Apache Version 2.0 License for specific language governing permissions and limitations under the License.
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*/
!function(a){"use strict";function b(a,b,c,d,e,f,g){this.inputItem=b,this.stateArrayIndex=c,this.mapping=e,this.arrayOfState=f,this.outputObservableArray=g,this.outputArray=this.outputObservableArray.peek(),this.isIncluded=null,this.suppressNotification=!1,this.outputArrayIndex=a.observable(d),this.mappedValueComputed=a.computed(this.mappingEvaluator,this),this.mappedValueComputed.subscribe(this.onMappingResultChanged,this),this.previousMappedValue=this.mappedValueComputed.peek()}function c(a,b){if(!a)return null;switch(a.status){case"added":return a.index;case"deleted":return a.index+b;default:throw new Error("Unknown diff status: "+a.status)}}function d(a,c,d,e,f,g,h,i,j){var k="number"==typeof c.moved,l=k?d[c.moved]:new b(a,c.value,e,f,g,h,i);return h.splice(e,0,l),l.isIncluded&&j.splice(f,0,l.mappedValueComputed.peek()),k&&(l.stateArrayIndex=e,l.setOutputArrayIndexSilently(f)),l}function e(a,b,c,d,e){var f=b.splice(c,1)[0];f.isIncluded&&e.splice(d,1),"number"!=typeof a.moved&&f.dispose()}function f(a,b,c){return a.stateArrayIndex=b,a.setOutputArrayIndexSilently(c),c+(a.isIncluded?1:0)}function g(a,b){for(var c={},d=0;d<a.length;d++){var e=a[d];"added"===e.status&&"number"==typeof e.moved&&(c[e.moved]=b[e.moved])}return c}function h(a,b,c){return c.length&&b[a.index]?b[a.index].outputArrayIndex.peek():c.length}function i(a,b,i,j,k,l){return b.subscribe(function(b){if(b.length){for(var m=g(b,i),n=0,o=b[0],p=0,q=o&&h(o,i,j),r=o.index;o||r<i.length;r++)if(c(o,p)===r){switch(o.status){case"added":var s=d(a,o,m,r,q,l,i,k,j);s.isIncluded&&q++,p++;break;case"deleted":e(o,i,r,q,j),p--,r--;break;default:throw new Error("Unknown diff status: "+o.status)}n++,o=b[n]}else r<i.length&&(q=f(i[r],r,q));k.valueHasMutated()}},null,"arrayChange")}function j(a,c){for(var d=this,e=[],f=[],g=a.observableArray(f),h=d.peek(),j=0;j<h.length;j++){var k=h[j],l=new b(a,k,j,f.length,c,e,g),n=l.mappedValueComputed.peek();e.push(l),l.isIncluded&&f.push(n)}var o=i(a,d,e,f,g,c),p=a.computed(g).extend({trackArrayChanges:!0}),q=p.dispose;return p.dispose=function(){o.dispose(),a.utils.arrayForEach(e,function(a){a.dispose()}),q.call(this,arguments)},m(a,p),p}function k(a,b){return j.call(this,a,function(a){return b(a)?a:p})}function l(a){function b(a,b){return function(){return b.apply(this,[a].concat(Array.prototype.slice.call(arguments,0)))}}a[q]={map:b(a,j),filter:b(a,k)}}function m(a,b){return a.utils.extend(b,a[q]),b}function n(a){a.projections={_exclusionMarker:p},l(a),m(a,a.observableArray.fn)}function o(){if("undefined"!=typeof module){var b=require("knockout");n(b),module.exports=b}else"ko"in a&&n(a.ko)}var p={};b.prototype.dispose=function(){this.mappedValueComputed.dispose()},b.prototype.mappingEvaluator=function(){var a=this.mapping(this.inputItem,this.outputArrayIndex),b=a!==p;return this.isIncluded!==b&&(null!==this.isIncluded&&this.moveSubsequentItemsBecauseInclusionStateChanged(b),this.isIncluded=b),a},b.prototype.onMappingResultChanged=function(a){a!==this.previousMappedValue&&(this.isIncluded&&this.outputArray.splice(this.outputArrayIndex.peek(),1,a),this.suppressNotification||this.outputObservableArray.valueHasMutated(),this.previousMappedValue=a)},b.prototype.moveSubsequentItemsBecauseInclusionStateChanged=function(a){var b,c,d=this.outputArrayIndex.peek();if(a)for(this.outputArray.splice(d,0,null),b=this.stateArrayIndex+1;b<this.arrayOfState.length;b++)c=this.arrayOfState[b],c.setOutputArrayIndexSilently(c.outputArrayIndex.peek()+1);else for(this.outputArray.splice(d,1),b=this.stateArrayIndex+1;b<this.arrayOfState.length;b++)c=this.arrayOfState[b],c.setOutputArrayIndexSilently(c.outputArrayIndex.peek()-1)},b.prototype.setOutputArrayIndexSilently=function(a){this.suppressNotification=!0,this.outputArrayIndex(a),this.suppressNotification=!1};var q="_ko.projections.cache";o()}(this);