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r._data}r._detachObservableParents(),r._data=this._observe(e),r._pristineData=e.slice(0),r._storeData(),r._ranges=[],r.trigger("reset"),r._addRange(r._data),r._total=r._data.length,r._pristineTotal=r._total,r._process(r._data)},view:function(e){if(e===t)return this._view;this._view=this._observeView(e)},_observeView:function(e){var t=this;Me(e,t._data,t._ranges,t.reader.model||X,t._isServerGrouped());var r=new W(e,t.reader.model);return r.parent=function(){return t.parent()},r},flatView:function(){return(this.group()||[]).length?Te(this._view):this._view},add:function(e){return this.insert(this._data.length,e)},_createNewModel:function(e){return this.reader.model?new this.reader.model(e):e instanceof X?e:new X(e)},insert:function(e,t){return t||(t=e,e=0),t instanceof te||(t=this._createNewModel(t)),this._isServerGrouped()?this._data.splice(e,0,this._wrapInEmptyGroup(t)):this._data.splice(e,0,t),this._insertModelInRange(e,t),t},pushInsert:function(t,r){var n=this._getCurrentRangeSpan();r||(r=t,t=0),o(r)||(r=[r]);var i=[],a=this.options.autoSync;this.options.autoSync=!1;try{for(var s=0;s<r.length;s++){var u=r[s],l=this.insert(t,u);i.push(l);var d=l.toJSON();this._isServerGrouped()&&(d=this._wrapInEmptyGroup(d)),this._pristineData.push(d),n&&n.length&&e(n).last()[0].pristineData.push(d),t++}}finally{this.options.autoSync=a}i.length&&this.trigger("push",{type:"create",items:i})},pushCreate:function(e){this.pushInsert(this._data.length,e)},pushUpdate:function(e){o(e)||(e=[e]);for(var t=[],r=0;r<e.length;r++){var n=e[r],i=this._createNewModel(n),a=this.get(i.id);a?(t.push(a),a.accept(n),a.trigger(k),this._updatePristineForModel(a,n)):this.pushCreate(n)}t.length&&this.trigger("push",{type:"update",items:t})},pushDestroy:function(e){var t=this._removeItems(e);t.length&&this.trigger("push",{type:"destroy",items:t})},_removeItems:function(e,t){o(e)||(e=[e]);var r=void 0===t||t,n=[],i=this.options.autoSync;this.options.autoSync=!1;try{for(var a=0;a<e.length;a++){var s=e[a],u=this._createNewModel(s),l=!1,d=a;this._eachItem(this._data,(function(t){d!==e.length-1?(t.omitChangeEvent=!0,t.omitCache=[]):t.omitChangeEvent=!1;for(var r=0;r<t.length;r++){var i=t.at(r);if(i.id===u.id){t.omitChangeEvent&&t.omitCache.push(i),n.push(i),t.splice(r,1),l=!0;break}}})),l&&r&&(this._removePristineForModel(u),this._destroyed.pop())}}finally{this.options.autoSync=i}return n},pushMove:function(e,t){var r=this._moveItems(e,t);r.length&&this.trigger("push",{type:"update",items:r})},_moveItems:function(e,t){o(t)||(t=[t]);var r=[],n=this.options.autoSync;this.options.autoSync=!1;try{for(var i=0;i<t.length;i++){var a=t[i],s=this._createNewModel(a);this._eachItem(this._data,(function(t){for(var n=0;n<t.length;n++){var i=t.at(n);if(i.id===s.id){r.push(i),t.splice(e>=n?--e:e,0,t.splice(n,1)[0]),e++;break}}}))}}finally{this.options.autoSync=n}return r},remove:function(e){var t,r=this,n=r._isServerGrouped();return!n||!e.uid||e.isNew&&e.isNew()||r._pushInDestroyed(e),this._eachItem(r._data,(function(r){if(t=function(e,t){if(e){var r,n,i=e.length;for(n=0;n<i;n++)if((r=e[n]).uid&&r.uid==t.uid)return e.splice(n,1),r}}(r,e),t&&n)return!0})),this._removeModelFromRanges(e),e},destroyed:function(){return this._destroyed},created:function(){var e,t,r=[],n=this._flatData(this._data,this.options.useRanges);for(e=0,t=n.length;e<t;e++)n[e].isNew&&n[e].isNew()&&!n[e].notFetched&&r.push(n[e]);return r},updated:function(){var e,t,r=[],n=this._flatData(this._data,this.options.useRanges);for(e=0,t=n.length;e<t;e++)n[e].isNew&&!n[e].isNew()&&n[e].dirty&&r.push(n[e]);return r},sync:function(){var t=this,r=[],n=[],i=t._destroyed,a=e.Deferred().resolve().promise();if(t.online()){if(!t.reader.model)return a;r=t.created(),n=t.updated();var s=[];t.options.batch&&t.transport.submit?s=t._sendSubmit(r,n,i):(s.push.apply(s,t._send("create",r)),s.push.apply(s,t._send("update",n)),s.push.apply(s,t._send("destroy",i))),a=e.when.apply(null,s).then((function(){var e,r,n=arguments;for(e=0,r=arguments.length;e<r;e++)n[e]&&t._accept(n[e]);t._storeData(!0),t._syncEnd(),t._change({action:"sync"}),t.trigger(w),t._isServerGroupPaged()&&t.read()}))}else t._storeData(!0),t._syncEnd(),t._change({action:"sync"});return a},_syncEnd:g,cancelChanges:function(e){var t=this;e instanceof h.data.Model?t._cancelModel(e):(t._destroyed=[],t._detachObservableParents(),t._data=t._observe(t._pristineData),t.options.serverPaging&&(t._total=t._pristineTotal),t._ranges=[],t._addRange(t._data,0),t._changesCanceled(),t._change(),t._markOfflineUpdatesAsDirty(),t._isServerGrouped()&&t.read())},_changesCanceled:g,_markOfflineUpdatesAsDirty:function(){var e=this;null!=e.options.offlineStorage&&e._eachItem(e._data,(function(e){for(var t=0;t<e.length;t++){var r=e.at(t);"update"!=r.__state__&&"create"!=r.__state__||(r.dirty=!0)}}))},hasChanges:function(){var e,t,r=this._flatData(this._data,this.options.useRanges);if(this._destroyed.length)return!0;for(e=0,t=r.length;e<t;e++)if(r[e].isNew&&r[e].isNew()||r[e].dirty)return!0;return!1},_accept:function(t){var r,n=this,i=t.models,a=t.response,u=0,l=n._isServerGrouped(),d=n._pristineData,g=t.type;if(n.trigger(G,{response:a,type:g}),a&&!s(a)){if(a=n.reader.parse(a),n._handleCustomErrors(a))return;a=n.reader.data(a),o(a)||(a=[a])}else a=e.map(i,(function(e){return e.toJSON()}));for("destroy"===g&&(n._destroyed=[]),u=0,r=i.length;u<r;u++)"destroy"!==g?(i[u].accept(a[u]),"create"===g?d.push(l?n._wrapInEmptyGroup(i[u].toJSON()):a[u]):"update"===g&&n._updatePristineForModel(i[u],a[u])):n._removePristineForModel(i[u])},_updatePristineForModel:function(e,t){this._executeOnPristineForModel(e,(function(e,r){h.deepExtend(r[e],t)}))},_executeOnPristineForModel:function(e,t){this._eachPristineItem((function(r){var n=je(r,e);if(n>-1)return t(n,r),!0}))},_removePristineForModel:function(e){this._executeOnPristineForModel(e,(function(e,t){t.splice(e,1)}))},_readData:function(e){return(this._isServerGrouped()?this.reader.groups:this.reader.data).call(this.reader,e)},_eachPristineItem:function(e){var t=this,r=t.options,n=t._getCurrentRangeSpan();t._eachItem(t._pristineData,e),r.serverPaging&&r.useRanges&&d(n,(function(r,n){t._eachItem(n.pristineData,e)}))},_eachItem:function(e,t){e&&e.length&&(this._isServerGrouped()?Ee(e,t):t(e))},_pristineForModel:function(e){var t,r;return this._eachPristineItem((function(n){if((r=je(n,e))>-1)return t=n[r],!0})),t},_cancelModel:function(e){var t=this,r=this._pristineForModel(e);this._eachItem(this._data,(function(n){var i=Le(n,e);i>=0&&(!r||e.isNew()&&!r.__state__?(t._modelCanceled(e),n.splice(i,1),t._removeModelFromRanges(e)):(n[i].accept(r),"update"==r.__state__&&(n[i].dirty=!0)))}))},_modelCanceled:g,_submit:function(t,r){var i=this;i.trigger(F,{type:"submit"}),i.trigger(C),i.transport.submit(n({success:function(r,n){var i=e.grep(t,(function(e){return e.type==n}))[0];i&&i.resolve({response:r,models:i.models,type:n})},error:function(e,r,n){for(var a=0;a<t.length;a++)t[a].reject(e);i.error(e,r,n)}},r))},_sendSubmit:function(t,r,n){var i=this,a=[];return i.options.batch&&(t.length&&a.push(e.Deferred((function(e){e.type="create",e.models=t}))),r.length&&a.push(e.Deferred((function(e){e.type="update",e.models=r}))),n.length&&a.push(e.Deferred((function(e){e.type="destroy",e.models=n}))),i._submit(a,{data:{created:i.reader.serialize(be(t)),updated:i.reader.serialize(be(r)),destroyed:i.reader.serialize(be(n))}})),a},_promise:function(t,r,i){var a=this;return e.Deferred((function(e){a.trigger(F,{type:i}),a.trigger(C),a.transport[i].call(a.transport,n({success:function(t){e.resolve({response:t,models:r,type:i})},error:function(t,r,n){e.reject(t),a.error(t,r,n)}},t))})).promise()},_send:function(e,t){var r,n,i=this,a=[],s=i.reader.serialize(be(t));if(i.options.batch)t.length&&a.push(i._promise({data:{models:s}},t,e));else for(r=0,n=t.length;r<n;r++)a.push(i._promise({data:s[r]},[t[r]],e));return a},read:function(t){var r=this,n=r._params(t),i=e.Deferred();return r._queueRequest(n,(function(){var e=r.trigger(F,{type:"read"});e?(r._dequeueRequest(),i.resolve(e)):(r.trigger(C),r._ranges=[],r.trigger("reset"),r.online()?r.transport.read({data:n,success:function(e){r._ranges=[],r.success(e,n),i.resolve()},error:function(){var e=L.call(arguments);r.error.apply(r,e),i.reject.apply(i,e)}}):null!=r.options.offlineStorage&&(r.success(r.offlineData(),n),i.resolve()))})),i.promise()},_readAggregates:function(e){return this.reader.aggregates(e)},success:function(e){var t,r,n=this,i=n.options;if(n.trigger(G,{response:e,type:"read"}),n.online()){if(e=n.reader.parse(e),n._handleCustomErrors(e))return void n._dequeueRequest();n._total=n.reader.total(e),n._isServerGroupPaged()&&(n._serverGroupsTotal=n._total),n._pageSize>n._total&&(n._pageSize=n._total,n.options.pageSize&&n.options.pageSize>n._pageSize&&(n._pageSize=n.options.pageSize)),n._aggregate&&i.serverAggregates&&(n._aggregateResult=n._readAggregates(e)),e=n._readData(e),n._destroyed=[]}else{e=n._readData(e),t=[];var a,s={},o=n.reader.model,u=o?o.idField:"id";for(a=0;a<this._destroyed.length;a++){var l=this._destroyed[a][u];s[l]=l}for(a=0;a<e.length;a++){var d=e[a];"destroy"==d.__state__?s[d[u]]||this._pushInDestroyed(this._createNewModel(d)):t.push(d)}e=t,n._total=e.length}if(n._pristineTotal=n._total,r=n._skip&&n._data.length&&n._skip<n._data.length,n.options.endless){r&&n._pristineData.splice(n._skip,n._pristineData.length),t=e.slice(0);for(var g=0;g<t.length;g++)n._pristineData.push(t[g])}else n._pristineData=e.slice(0);if(n._detachObservableParents(),n.options.endless){n._data.unbind(k,n._changeHandler),n._isServerGrouped()&&n._data[n._data.length-1].value===e[0].value&&(qe(n._data[n._data.length-1],e[0]),e.shift()),e=n._observe(e),r&&n._data.splice(n._skip,n._data.length);for(var h=0;h<e.length;h++)n._data.push(e[h]);n._data.bind(k,n._changeHandler)}else n._data=n._observe(e);n._markOfflineUpdatesAsDirty(),n._storeData(),n._addRange(n._data),n._process(n._data),n._dequeueRequest()},_detachObservableParents:function(){if(this._data&&this._shouldDetachObservableParents)for(var e=0;e<this._data.length;e++)this._data[e].parent&&(this._data[e].parent=g)},_storeData:function(e){var t=this._isServerGrouped(),r=this.reader.model;if(null!=this.options.offlineStorage){for(var n=function e(n){for(var i=[],a=0;a<n.length;a++){var s=n.at(a),o=s.toJSON();t&&s.items?o.items=e(s.items):(o.uid=s.uid,r&&(s.isNew()?o.__state__="create":s.dirty&&(o.__state__="update"))),i.push(o)}return i}(this._data),i=[],a=0;a<this._destroyed.length;a++){var s=this._destroyed[a].toJSON();s.__state__="destroy",i.push(s)}this.offlineData(n.concat(i)),e&&(this._pristineData=this.reader.reader?this.reader.reader._wrapDataAccessBase(n):this.reader._wrapDataAccessBase(n))}},_addRange:function(e,t){var r,n=this,i=void 0!==t?t:n._skip||0,a={data:e,pristineData:e.toJSON(),timestamp:n._timeStamp()};this._isGroupPaged()?(r=i+e.length,a.outerStart=i,a.outerEnd=r):r=i+n._flatData(e,!0).length,a.start=i,a.end=r,n._ranges.push(a),n._sortRanges(),n._isGroupPaged()&&(n._groupsFlat||(n._groupsFlat=[]),n._appendToGroupsFlat(a.data),n._updateOuterRangesLength())},_appendToGroupsFlat:function(e){for(var t=e.length,r=0;r<t;r++)this._groupsFlat.push(e[r])},_getGroupByUid:function(e){for(var t,r=this._groupsFlat.length,n=0;n<r;n++)if((t=this._groupsFlat[n]).uid===e)return t},_sortRanges:function(){this._ranges.sort((function(e,t){return e.start-t.start}))},error:function(e,t,r){this._dequeueRequest(),this.trigger(G,{}),this.trigger(x,{xhr:e,status:t,errorThrown:r})},_params:function(e){var t=this,r=n({take:t.take(),skip:t.skip(),page:t.page(),pageSize:t.pageSize(),sort:t._sort,filter:t._filter,group:t._group,aggregate:t._aggregate,groupPaging:!!t._groupPaging},e);return t.options.serverPaging||(delete r.take,delete r.skip,delete r.page,delete r.pageSize),t.options.serverGrouping?t.reader.model&&r.group&&(r.group=Je(r.group,t.reader.model)):delete r.group,t.options.serverFiltering?t.reader.model&&r.filter&&(r.filter=Ue(r.filter,t.reader.model)):delete r.filter,t.options.serverSorting?t.reader.model&&r.sort&&(r.sort=Je(r.sort,t.reader.model)):delete r.sort,t.options.serverAggregates?t.reader.model&&r.aggregate&&(r.aggregate=Je(r.aggregate,t.reader.model)):delete r.aggregate,t.options.groupPaging||delete r.groupPaging,r},_queueRequest:function(e,r){var n=this;n._requestInProgress?n._pending={callback:r.bind(n),options:e}:(n._requestInProgress=!0,n._pending=t,r())},_dequeueRequest:function(){var e=this;e._requestInProgress=!1,e._pending&&e._queueRequest(e._pending.options,e._pending.callback)},_handleCustomErrors:function(e){if(this.reader.errors){var t=this.reader.errors(e);if(t)return this.trigger(x,{xhr:null,status:"customerror",errorThrown:"custom error",errors:t}),!0}return!1},_shouldWrap:function(e){var t=this.reader.model;return!(!t||!e.length)&&!(e[0]instanceof t)},_observe:function(e){var t=this,r=t.reader.model;(t._shouldDetachObservableParents=!0,e instanceof Q)?(t._shouldDetachObservableParents=!1,t._shouldWrap(e)&&(e.type=t.reader.model,e.wrapAll(e,e))):(e=new(t.pageSize()&&!t.options.serverPaging?W:Q)(e,t.reader.model)).parent=function(){return t.parent()};return t._isServerGrouped()&&ze(e,r),!(t._changeHandler&&t._data&&t._data instanceof Q)||t.options.useRanges&&t.options.serverPaging?t._changeHandler=t._change.bind(t):t._data.unbind(k,t._changeHandler),e.bind(k,t._changeHandler)},_updateTotalForAction:function(e,t){var r=this,n=parseInt(r._total,10);ye(r._total)||(n=parseInt(r._pristineTotal,10)),"add"===e?n+=t.length:"remove"===e?n-=t.length:"itemchange"===e||"sync"===e||r.options.serverPaging?"sync"===e&&(n=r._pristineTotal=parseInt(r._total,10)):n=r._pristineTotal,r._total=n},_pushInDestroyed:function(e){this._destroyed.find((function(t){return t.uid===e.uid}))||this._destroyed.push(e)},_change:function(e){var t,r,n=this,i=e?e.action:"";if("remove"===i)for(t=0,r=e.items.length;t<r;t++)e.items[t].isNew&&e.items[t].isNew()||n._pushInDestroyed(e.items[t]);if(!n.options.autoSync||"add"!==i&&"remove"!==i&&"itemchange"!==i)n._updateTotalForAction(i,e?e.items:[]),n._process(n._data,e);else{var a=function(t){"sync"===t.action&&(n.unbind("change",a),n._updateTotalForAction(i,e.items))};n.first("change",a),n.sync()}},_calculateAggregates:function(e,t){t=t||{};var r=new ae(e),n=t.aggregate,i=t.filter;return i&&(r=r.filter(i)),r.aggregate(n)},_process:function(e,r){var n,i=this,a={};if(!0!==i.options.serverPaging&&(a.skip=i._skip,a.take=i._take||i._pageSize,a.skip===t&&i._page!==t&&i._pageSize!==t&&(a.skip=(i._page-1)*i._pageSize),i.options.useRanges&&(a.skip=i.currentRangeStart())),!0!==i.options.serverSorting&&(a.sort=i._sort),!0!==i.options.serverFiltering&&(a.filter=i._filter),!0!==i.options.serverGrouping&&(a.group=i._group),!0!==i.options.serverAggregates&&(a.aggregate=i._aggregate),i.options.serverGrouping&&i._clearEmptyGroups(e),a.groupPaging=i._groupPaging,n=i._isGroupPaged()&&r&&("page"===r.action||"expandGroup"===r.action||"collapseGroup"===r.action)?i._queryProcess(e,{aggregate:i._aggregate}):i._queryProcess(e,a),i._filter&&r&&"add"===r.action){var s=r.items[0],o=n.data;i._isGrouped()&&!this._isServerGrouped()&&(o=Te(o)),o.find((function(e){return e.uid===s.uid}))||(n.data.splice(s.index,0,i._isGrouped()?i._wrapInEmptyGroup(s):s),n.total++)}!0!==i.options.serverAggregates&&(i._aggregateResult=i._calculateAggregates(n.dataToAggregate||e,a)),i._setView(n,a,r),i._setFilterTotal(n.total,!1),(r=r||{}).items=r.items||i._view,i.trigger(k,r)},_setView:function(e,t,r){var n=this;if(n._isGroupPaged()&&!n._isServerGrouped())if(!r||"page"!==r.action&&"expandGroup"!==r.action&&"collapseGroup"!==r.action){n._ranges=[];var i=new ae(e.data);n._addRange(n._observe(e.data)),t.skip+t.take>e.data.length&&(t.skip=e.data.length-t.take),n.view(i.range(t.skip,t.take).toArray())}else n.view(e.data),n._updateOuterRangesLength();else n.view(e.data)},_clearEmptyGroups:function(e){for(var t=e.length-1;t>=0;t--){var r=e[t];r.hasSubgroups&&this._clearEmptyGroups(r.items),!r.items||r.items.length||r.itemCount||M.apply(r.parent(),[t,1])}},_queryProcess:function(e,t){return this.options.inPlaceSort?ae.process(e,t,this.options.inPlaceSort):ae.process(e,t)},_mergeState:function(r){var n,i=this;return r!==t&&(i._pageSize=r.pageSize,i._page=r.page,i._sort=r.sort,i._filter=r.filter,i._group=r.group,i._aggregate=r.aggregate,i._skip=i._currentRangeStart=r.skip,i._take=r.take,i._skip===t&&(i._skip=i._currentRangeStart=i.skip(),r.skip=i.skip()),i._take===t&&i._pageSize!==t&&(i._take=i._pageSize,r.take=i._take),i.options.virtual&&(r.virtual=i.options.virtual),r.sort&&(i._sort=r.sort=se(r.sort),i._sortFields=oe(r.sort)),r.filter&&(i._filter=r.filter=i.options.accentFoldingFiltering&&!e.isEmptyObject(r.filter)?e.extend({},de(r.filter),{accentFoldingFiltering:i.options.accentFoldingFiltering}):de(r.filter)),r.group&&(i._group=r.group=ce(r.group)),r.aggregate&&(i._aggregate=r.aggregate=(n=r.aggregate,o(n)?n:[n]))),r},query:function(r){var n;if(this.options.serverSorting||this.options.serverPaging||this.options.serverFiltering||this.options.serverGrouping||this.options.serverAggregates||(this._data===t||0===this._data.length)&&!this._destroyed.length){if(this.options.endless){var i=r.pageSize-this.pageSize();i>0?(i=this.pageSize(),r.page=r.pageSize/i,r.pageSize=i):(r.page=1,this.options.endless=!1)}return this.read(this._mergeState(r))}var a=this.trigger(F,{type:"read"});return a||(this.trigger(C),r&&(r.groupPaging=this._groupPaging),n=this._queryProcess(this._data,this._mergeState(r)),this._setFilterTotal(n.total,!0),this._aggregateResult=this._calculateAggregates(n.dataToAggregate||this._data,r),this._setView(n,r),this.trigger(G,{type:"read"}),this.trigger(k,{items:n.data,action:r?r.action:""})),e.Deferred().resolve(a).promise()},_hasExpandedSubGroups:function(e){var t=!1,r=e.items?e.items.length:0;if(!e.hasSubgroups)return!1;for(var n=0;n<r;n++)if(this._groupsState[e.items[n].uid]){t=!0;break}return t},_findGroupedRange:function(e,t,r,n,i){for(var a,s,o,u,l,d=this,g=e.length,h=0;h<g&&(a=e[h],!(r.taken>=r.take));h++)if(d._getGroupByUid(a.uid)||d._groupsFlat.push(a),d._groupsState[a.uid]){if(d._isServerGroupPaged()){if(d._fetchGroupItems(a,r,n,i))return void(d._fetchingGroupItems=!0);if(u=(a.subgroupCount||a.itemCount)+1,l=r.skip-r.skipped,!d._hasExpandedSubGroups(a)&&l>u){r.skipped+=u;continue}}if(r.includeParents&&r.skipped<r.skip?(r.skipped++,a.excludeHead