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this.store.dispatch(function(e){return{type:q,payload:{sourceId:e}}}(i)),i}},{key:"addTarget",value:function(e,r){He(e,!0),function(e){n("function"==typeof e.canDrop,"Expected canDrop to be a function."),n("function"==typeof e.hover,"Expected hover to be a function."),n("function"==typeof e.drop,"Expected beginDrag to be a function.")}(r);var i=this.addHandler(t.TARGET,e,r);return this.store.dispatch(function(e){return{type:z,payload:{targetId:e}}}(i)),i}},{key:"containsHandler",value:function(e){return Ge(this.dragSources,e)||Ge(this.dropTargets,e)}},{key:"getSource",value:function(e){var t=arguments.length>1&&void 0!==arguments[1]&&arguments[1];n(this.isSourceId(e),"Expected a valid source ID.");var r=t&&e===this.pinnedSourceId,i=r?this.pinnedSource:this.dragSources.get(e);return i}},{key:"getTarget",value:function(e){return n(this.isTargetId(e),"Expected a valid target ID."),this.dropTargets.get(e)}},{key:"getSourceType",value:function(e){return n(this.isSourceId(e),"Expected a valid source ID."),this.types.get(e)}},{key:"getTargetType",value:function(e){return n(this.isTargetId(e),"Expected a valid target ID."),this.types.get(e)}},{key:"isSourceId",value:function(e){return Ye(e)===t.SOURCE}},{key:"isTargetId",value:function(e){return Ye(e)===t.TARGET}},{key:"removeSource",value:function(e){var t=this;n(this.getSource(e),"Expected an existing source."),this.store.dispatch(function(e){return{type:J,payload:{sourceId:e}}}(e)),je(function(){t.dragSources.delete(e),t.types.delete(e)})}},{key:"removeTarget",value:function(e){n(this.getTarget(e),"Expected an existing target."),this.store.dispatch(function(e){return{type:Q,payload:{targetId:e}}}(e)),this.dropTargets.delete(e),this.types.delete(e)}},{key:"pinSource",value:function(e){var t=this.getSource(e);n(t,"Expected an existing source."),this.pinnedSourceId=e,this.pinnedSource=t}},{key:"unpinSource",value:function(){n(this.pinnedSource,"No source is pinned at the time."),this.pinnedSourceId=null,this.pinnedSource=null}},{key:"addHandler",value:function(e,r,n){var i=Be(e);return this.types.set(i,r),e===t.SOURCE?this.dragSources.set(i,n):e===t.TARGET&&this.dropTargets.set(i,n),i}}])&&Ue(r.prototype,i),o&&Ue(r,o),e}();function We(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}var Ke=function(){function e(){var t=this,r=arguments.length>0&&void 0!==arguments[0]&&arguments[0];!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.isSetUp=!1,this.handleRefCountChange=function(){var e=t.store.getState().refCount>0;t.backend&&(e&&!t.isSetUp?(t.backend.setup(),t.isSetUp=!0):!e&&t.isSetUp&&(t.backend.teardown(),t.isSetUp=!1))};var n=function(e){var t="undefined"!=typeof window&&window.__REDUX_DEVTOOLS_EXTENSION__;return d(de,e&&t&&t({name:"dnd-core",instanceId:"dnd-core"}))}(r);this.store=n,this.monitor=new pe(n,new Xe(n)),n.subscribe(this.handleRefCountChange)}var t,r,n;return t=e,(r=[{key:"receiveBackend",value:function(e){this.backend=e}},{key:"getMonitor",value:function(){return this.monitor}},{key:"getBackend",value:function(){return this.backend}},{key:"getRegistry",value:function(){return this.monitor.registry}},{key:"getActions",value:function(){var e=this,t=this.store.dispatch;var r=function(e){return{beginDrag:S(e),publishDragSource:C(e),hover:N(e),drop:H(e),endDrag:Y(e)}}(this);return Object.keys(r).reduce(function(n,i){var o,a=r[i];return n[i]=(o=a,function(){for(var r=arguments.length,n=new Array(r),i=0;i<r;i++)n[i]=arguments[i];var a=o.apply(e,n);void 0!==a&&t(a)}),n},{})}},{key:"dispatch",value:function(e){this.store.dispatch(e)}}])&&We(t.prototype,r),n&&We(t,n),e}();function Ve(e,t,r,n){var i=new Ke(n),o=e(i,t,r);return i.receiveBackend(o),i}var qe=e.createContext({dragDropManager:void 0});function ze(){var t=e.useContext(qe).dragDropManager;return n(null!=t,"Expected drag drop context"),t}function Je(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}var Qe=!1,Ze=!1,$e=function(){function e(t){!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.sourceId=null,this.internalMonitor=t.getMonitor()}var t,r,i;return t=e,(r=[{key:"receiveHandlerId",value:function(e){this.sourceId=e}},{key:"getHandlerId",value:function(){return this.sourceId}},{key:"canDrag",value:function(){n(!Qe,"You may not call monitor.canDrag() inside your canDrag() implementation. Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source-monitor");try{return Qe=!0,this.internalMonitor.canDragSource(this.sourceId)}finally{Qe=!1}}},{key:"isDragging",value:function(){if(!this.sourceId)return!1;n(!Ze,"You may not call monitor.isDragging() inside your isDragging() implementation. Read more: http://react-dnd.github.io/react-dnd/docs/api/drag-source-monitor");try{return Ze=!0,this.internalMonitor.isDraggingSource(this.sourceId)}finally{Ze=!1}}},{key:"subscribeToStateChange",value:function(e,t){return this.internalMonitor.subscribeToStateChange(e,t)}},{key:"isDraggingSource",value:function(e){return this.internalMonitor.isDraggingSource(e)}},{key:"isOverTarget",value:function(e,t){return this.internalMonitor.isOverTarget(e,t)}},{key:"getTargetIds",value:function(){return this.internalMonitor.getTargetIds()}},{key:"isSourcePublic",value:function(){return this.internalMonitor.isSourcePublic()}},{key:"getSourceId",value:function(){return this.internalMonitor.getSourceId()}},{key:"subscribeToOffsetChange",value:function(e){return this.internalMonitor.subscribeToOffsetChange(e)}},{key:"canDragSource",value:function(e){return this.internalMonitor.canDragSource(e)}},{key:"canDropOnTarget",value:function(e){return this.internalMonitor.canDropOnTarget(e)}},{key:"getItemType",value:function(){return this.internalMonitor.getItemType()}},{key:"getItem",value:function(){return this.internalMonitor.getItem()}},{key:"getDropResult",value:function(){return this.internalMonitor.getDropResult()}},{key:"didDrop",value:function(){return this.internalMonitor.didDrop()}},{key:"getInitialClientOffset",value:function(){return this.internalMonitor.getInitialClientOffset()}},{key:"getInitialSourceClientOffset",value:function(){return this.internalMonitor.getInitialSourceClientOffset()}},{key:"getSourceClientOffset",value:function(){return this.internalMonitor.getSourceClientOffset()}},{key:"getClientOffset",value:function(){return this.internalMonitor.getClientOffset()}},{key:"getDifferenceFromInitialOffset",value:function(){return this.internalMonitor.getDifferenceFromInitialOffset()}}])&&Je(t.prototype,r),i&&Je(t,i),e}();function et(e,t){"function"==typeof e?e(t):e.current=t}function tt(t,r){var i=t.ref;return n("string"!=typeof i,"Cannot connect React DnD to an element with an existing string ref. Please convert it to use a callback ref instead, or wrap it into a <span> or <div>. Read more: https://facebook.github.io/react/docs/more-about-refs.html#the-ref-callback-attribute"),i?e.cloneElement(t,{ref:function(e){et(i,e),et(r,e)}}):e.cloneElement(t,{ref:r})}function rt(e){if("string"!=typeof e.type){var t=e.type.displayName||e.type.name||"the component";throw new Error("Only native element nodes can now be passed to React DnD connectors."+"You can either wrap ".concat(t," into a <div>, or turn it into a ")+"drag source or a drop target itself.")}}function nt(t){var r={};return Object.keys(t).forEach(function(n){var i=t[n];if(n.endsWith("Ref"))r[n]=t[n];else{var o=function(t){return function(){var r=arguments.length>0&&void 0!==arguments[0]?arguments[0]:null,n=arguments.length>1&&void 0!==arguments[1]?arguments[1]:null;if(!e.isValidElement(r)){var i=r;return t(i,n),i}var o=r;rt(o);var a=n?function(e){return t(e,n)}:t;return tt(o,a)}}(i);r[n]=function(){return o}}}),r}function it(e){return(it="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function ot(e){return null!==e&&"object"===it(e)&&e.hasOwnProperty("current")}function at(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}var ut=function(){function e(t){var r=this;!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.hooks=nt({dragSource:function(e,t){r.clearDragSource(),r.dragSourceOptions=t||null,ot(e)?r.dragSourceRef=e:r.dragSourceNode=e,r.reconnectDragSource()},dragPreview:function(e,t){r.clearDragPreview(),r.dragPreviewOptions=t||null,ot(e)?r.dragPreviewRef=e:r.dragPreviewNode=e,r.reconnectDragPreview()}}),this.handlerId=null,this.dragSourceRef=null,this.dragSourceOptionsInternal=null,this.dragPreviewRef=null,this.dragPreviewOptionsInternal=null,this.lastConnectedHandlerId=null,this.lastConnectedDragSource=null,this.lastConnectedDragSourceOptions=null,this.lastConnectedDragPreview=null,this.lastConnectedDragPreviewOptions=null,this.backend=t}var t,r,n;return t=e,(r=[{key:"receiveHandlerId",value:function(e){this.handlerId!==e&&(this.handlerId=e,this.reconnect())}},{key:"reconnect",value:function(){this.reconnectDragSource(),this.reconnectDragPreview()}},{key:"reconnectDragSource",value:function(){var e=this.dragSource,t=this.didHandlerIdChange()||this.didConnectedDragSourceChange()||this.didDragSourceOptionsChange();t&&this.disconnectDragSource(),this.handlerId&&(e?t&&(this.lastConnectedHandlerId=this.handlerId,this.lastConnectedDragSource=e,this.lastConnectedDragSourceOptions=this.dragSourceOptions,this.dragSourceUnsubscribe=this.backend.connectDragSource(this.handlerId,e,this.dragSourceOptions)):this.lastConnectedDragSource=e)}},{key:"reconnectDragPreview",value:function(){var e=this.dragPreview,t=this.didHandlerIdChange()||this.didConnectedDragPreviewChange()||this.didDragPreviewOptionsChange();this.handlerId?this.dragPreview&&t&&(this.lastConnectedHandlerId=this.handlerId,this.lastConnectedDragPreview=e,this.lastConnectedDragPreviewOptions=this.dragPreviewOptions,this.disconnectDragPreview(),this.dragPreviewUnsubscribe=this.backend.connectDragPreview(this.handlerId,e,this.dragPreviewOptions)):this.disconnectDragPreview()}},{key:"didHandlerIdChange",value:function(){return this.lastConnectedHandlerId!==this.handlerId}},{key:"didConnectedDragSourceChange",value:function(){return this.lastConnectedDragSource!==this.dragSource}},{key:"didConnectedDragPreviewChange",value:function(){return this.lastConnectedDragPreview!==this.dragPreview}},{key:"didDragSourceOptionsChange",value:function(){return!o(this.lastConnectedDragSourceOptions,this.dragSourceOptions)}},{key:"didDragPreviewOptionsChange",value:function(){return!o(this.lastConnectedDragPreviewOptions,this.dragPreviewOptions)}},{key:"disconnectDragSource",value:function(){this.dragSourceUnsubscribe&&(this.dragSourceUnsubscribe(),this.dragSourceUnsubscribe=void 0)}},{key:"disconnectDragPreview",value:function(){this.dragPreviewUnsubscribe&&(this.dragPreviewUnsubscribe(),this.dragPreviewUnsubscribe=void 0,this.dragPreviewNode=null,this.dragPreviewRef=null)}},{key:"clearDragSource",value:function(){this.dragSourceNode=null,this.dragSourceRef=null}},{key:"clearDragPreview",value:function(){this.dragPreviewNode=null,this.dragPreviewRef=null}},{key:"connectTarget",get:function(){return this.dragSource}},{key:"dragSourceOptions",get:function(){return this.dragSourceOptionsInternal},set:function(e){this.dragSourceOptionsInternal=e}},{key:"dragPreviewOptions",get:function(){return this.dragPreviewOptionsInternal},set:function(e){this.dragPreviewOptionsInternal=e}},{key:"dragSource",get:function(){return this.dragSourceNode||this.dragSourceRef&&this.dragSourceRef.current}},{key:"dragPreview",get:function(){return this.dragPreviewNode||this.dragPreviewRef&&this.dragPreviewRef.current}}])&&at(t.prototype,r),n&&at(t,n),e}();function ct(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var r=[],n=!0,i=!1,o=void 0;try{for(var a,u=e[Symbol.iterator]();!(n=(a=u.next()).done)&&(r.push(a.value),!t||r.length!==t);n=!0);}catch(e){i=!0,o=e}finally{try{n||null==u.return||u.return()}finally{if(i)throw o}}return r}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function st(e){return(st="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function lt(e,t){return function(e){if(Array.isArray(e))return e}(e)||function(e,t){var r=[],n=!0,i=!1,o=void 0;try{for(var a,u=e[Symbol.iterator]();!(n=(a=u.next()).done)&&(r.push(a.value),!t||r.length!==t);n=!0);}catch(e){i=!0,o=e}finally{try{n||null==u.return||u.return()}finally{if(i)throw o}}return r}(e,t)||function(){throw new TypeError("Invalid attempt to destructure non-iterable instance")}()}function ft(t){var r=e.useRef(t);r.current=t,n(null!=t.item,"item must be defined"),n(null!=t.item.type,"item type must be defined");var o,a=lt((o=ze(),[e.useMemo(function(){return new $e(o)},[o]),e.useMemo(function(){return new ut(o.getBackend())},[o])]),2),u=a[0],s=a[1];!function(t,r,o){var a=ze(),u=e.useMemo(function(){return{beginDrag:function(){var e=t.current,i=e.begin,o=e.item;if(i){var a=i(r);return n(null==a||"object"===st(a),"dragSpec.begin() must either return an object, undefined, or null"),a||o||{}}return o||{}},canDrag:function(){return"boolean"==typeof t.current.canDrag?t.current.canDrag:"function"!=typeof t.current.canDrag||t.current.canDrag(r)},isDragging:function(e,n){var i=t.current.isDragging;return i?i(r):n===e.getSourceId()},endDrag:function(){var e=t.current.end;e&&e(r.getItem(),r),o.reconnect()}}},[]);i(function(){var e=ct(function(e,t,r){var n=r.getRegistry(),i=n.addSource(e,t);return[i,function(){return n.removeSource(i)}]}(t.current.item.type,u,a),2),n=e[0],i=e[1];return r.receiveHandlerId(n),o.receiveHandlerId(n),i},[])}(r,u,s);var l=c(u,r.current.collect||function(){return{}},function(){return s.reconnect()}),f=e.useMemo(function(){return s.hooks.dragSource()},[s]),d=e.useMemo(function(){return s.hooks.dragPreview()},[s]);return i(function(){s.dragSourceOptions=r.current.options||null,s.reconnect()},[s]),i(function(){s.dragPreviewOptions=r.current.previewOptions||null,s.reconnect()},[s]),[l,f,d]}function dt(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}var gt=function(){function e(t){var r=this;!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a 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t=this.dropTarget;this.handlerId&&(t?e&&(this.lastConnectedHandlerId=this.handlerId,this.lastConnectedDropTarget=t,this.lastConnectedDropTargetOptions=this.dropTargetOptions,this.unsubscribeDropTarget=this.backend.connectDropTarget(this.handlerId,t,this.dropTargetOptions)):this.lastConnectedDropTarget=t)}},{key:"receiveHandlerId",value:function(e){e!==this.handlerId&&(this.handlerId=e,this.reconnect())}},{key:"didHandlerIdChange",value:function(){return this.lastConnectedHandlerId!==this.handlerId}},{key:"didDropTargetChange",value:function(){return this.lastConnectedDropTarget!==this.dropTarget}},{key:"didOptionsChange",value:function(){return!o(this.lastConnectedDropTargetOptions,this.dropTargetOptions)}},{key:"disconnectDropTarget",value:function(){this.unsubscribeDropTarget&&(this.unsubscribeDropTarget(),this.unsubscribeDropTarget=void 0)}},{key:"clearDropTarget",value:function(){this.dropTargetRef=null,this.dropTargetNode=null}},{key:"connectTarget",get:function(){return this.dropTarget}},{key:"dropTargetOptions",get:function(){return this.dropTargetOptionsInternal},set:function(e){this.dropTargetOptionsInternal=e}},{key:"dropTarget",get:function(){return this.dropTargetNode||this.dropTargetRef&&this.dropTargetRef.current}}])&&dt(t.prototype,r),n&&dt(t,n),e}();function ht(e,t){for(var r=0;r<t.length;r++){var n=t[r];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}var pt=!1,vt=function(){function e(t){!function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}(this,e),this.targetId=null,this.internalMonitor=t.getMonitor()}var t,r,i;return t=e,(r=[{key:"receiveHandlerId",value:function(e){this.targetId=e}},{key:"getHandlerId",value:function(){return this.targetId}},{key:"subscribeToStateChange",value:function(e,t){return this.internalMonitor.subscribeToStateChange(e,t)}},{key:"canDrop",value:function(){if(!this.targetId)return!1;n(!pt,"You may not call monitor.canDrop() inside your canDrop() implementation. Read more: http://react-dnd.github.io/react-dnd/docs/api/drop-target-monitor");try{return pt=!0,this.internalMonitor.canDropOnTarget(this.targetId)}finally{pt=!1}}},{key:"isOver",value:function(e){return!!this.targetId&&this.internalMonitor.isOverTarget(this.targetId,e)}},{key:"getItemType",value:function(){return this.internalMonitor.getItemType()}},{key:"getItem",value:function(){return this.internalMonitor.getItem()}},{key:"getDropResult",value:function(){return this.internalMonitor.getDropResult()}},{key:"didDrop",value:function(){return this.internalMonitor.didDrop()}},{key:"getInitialClientOffset",value:function(){return this.internalMonitor.getInitialClientOffset()}},{key:"getInitialSourceClientOffset",value:function(){return this.internalMonitor.getInitialSourceClientOffset()}},{key:"getSourceClientOffset",value:function(){return this.internalMonitor.getSourceClientOffset()}},{key:"getClientOffset",value:function(){return 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n.monitor.canDropOnTarget(e)})?(e.preventDefault(),e.dataTransfer&&(e.dataTransfer.dropEffect=n.getCurrentDropEffect())):n.isDraggingNativeItem()?e.preventDefault():(e.preventDefault(),e.dataTransfer&&(e.dataTransfer.dropEffect="none"))},this.handleTopDragLeaveCapture=function(e){n.isDraggingNativeItem()&&e.preventDefault(),n.enterLeaveCounter.leave(e.target)&&n.isDraggingNativeItem()&&n.endDragNativeItem()},this.handleTopDropCapture=function(e){n.dropTargetIds=[],e.preventDefault(),n.isDraggingNativeItem()&&n.currentNativeSource.mutateItemByReadingDataTransfer(e.dataTransfer),n.enterLeaveCounter.reset()},this.handleTopDrop=function(e){var t=n.dropTargetIds;n.dropTargetIds=[],n.actions.hover(t,{clientOffset:xt(e)}),n.actions.drop({dropEffect:n.getCurrentDropEffect()}),n.isDraggingNativeItem()?n.endDragNativeItem():n.endDragIfSourceWasRemovedFromDOM()},this.handleSelectStart=function(e){var t=e.target;"function"==typeof t.dragDrop&&("INPUT"===t.tagName||"SELECT"===t.tagName||"TEXTAREA"===t.tagName||t.isContentEditable||(e.preventDefault(),t.dragDrop()))},this.options=new Kt(r),this.actions=t.getActions(),this.monitor=t.getMonitor(),this.registry=t.getRegistry(),this.enterLeaveCounter=new It(this.isNodeInDocument)}var t,r,n;return t=e,(r=[{key:"setup",value:function(){if(void 0!==this.window){if(this.window.__isReactDndBackendSetUp)throw new Error("Cannot have two HTML5 backends at the same time.");this.window.__isReactDndBackendSetUp=!0,this.addEventListeners(this.window)}}},{key:"teardown",value:function(){void 0!==this.window&&(this.window.__isReactDndBackendSetUp=!1,this.removeEventListeners(this.window),this.clearCurrentDragSourceNode(),this.asyncEndDragFrameId&&this.window.cancelAnimationFrame(this.asyncEndDragFrameId))}},{key:"connectDragPreview",value:function(e,t,r){var n=this;return this.sourcePreviewNodeOptions.set(e,r),this.sourcePreviewNodes.set(e,t),function(){n.sourcePreviewNodes.delete(e),n.sourcePreviewNodeOptions.delete(e)}}},{key:"connectDragSource",value:function(e,t,r){var n=this;this.sourceNodes.set(e,t),this.sourceNodeOptions.set(e,r);var i=function(t){return n.handleDragStart(t,e)},o=function(e){return n.handleSelectStart(e)};return t.setAttribute("draggable","true"),t.addEventListener("dragstart",i),t.addEventListener("selectstart",o),function(){n.sourceNodes.delete(e),n.sourceNodeOptions.delete(e),t.removeEventListener("dragstart",i),t.removeEventListener("selectstart",o),t.setAttribute("draggable","false")}}},{key:"connectDropTarget",value:function(e,t){var r=this,n=function(t){return r.handleDragEnter(t,e)},i=function(t){return r.handleDragOver(t,e)},o=function(t){return r.handleDrop(t,e)};return 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e=this.monitor.getSourceId(),t=this.sourceNodeOptions.get(e);return qt({dropEffect:this.altKeyPressed?"copy":"move"},t||{})}},{key:"getCurrentDropEffect",value:function(){return this.isDraggingNativeItem()?"copy":this.getCurrentSourceNodeOptions().dropEffect}},{key:"getCurrentSourcePreviewNodeOptions",value:function(){var e=this.monitor.getSourceId();return qt({anchorX:.5,anchorY:.5,captureDraggingState:!1},this.sourcePreviewNodeOptions.get(e)||{})}},{key:"isDraggingNativeItem",value:function(){var e=this.monitor.getItemType();return Object.keys(Ht).some(function(t){return Ht[t]===e})}},{key:"beginDragNativeItem",value:function(e){this.clearCurrentDragSourceNode(),this.currentNativeSource=function(e){return new Gt(Bt[e])}(e),this.currentNativeHandle=this.registry.addSource(e,this.currentNativeSource),this.actions.beginDrag([this.currentNativeHandle])}},{key:"setCurrentDragSourceNode",value:function(e){var t=this;this.clearCurrentDragSourceNode(),this.currentDragSourceNode=e;this.mouseMoveTimeoutTimer=setTimeout(function(){return t.window&&t.window.addEventListener("mousemove",t.endDragIfSourceWasRemovedFromDOM,!0)},1e3)}},{key:"clearCurrentDragSourceNode",value:function(){return!!this.currentDragSourceNode&&(this.currentDragSourceNode=null,this.window&&(this.window.clearTimeout(this.mouseMoveTimeoutTimer||void 0),this.window.removeEventListener("mousemove",this.endDragIfSourceWasRemovedFromDOM,!0)),this.mouseMoveTimeoutTimer=null,!0)}},{key:"handleDragStart",value:function(e,t){e.defaultPrevented||(this.dragStartSourceIds||(this.dragStartSourceIds=[]),this.dragStartSourceIds.unshift(t))}},{key:"handleDragEnter",value:function(e,t){this.dragEnterTargetIds.unshift(t)}},{key:"handleDragOver",value:function(e,t){null===this.dragOverTargetIds&&(this.dragOverTargetIds=[]),this.dragOverTargetIds.unshift(t)}},{key:"handleDrop",value:function(e,t){this.dropTargetIds.unshift(t)}},{key:"window",get:function(){return this.options.window}},{key:"document",get:function(){return this.options.document}}])&&Jt(t.prototype,r),n&&Jt(t,n),e}(),Zt=function(e,t){return new Qt(e,t)};if("undefined"!=typeof self)$t(self);else if(void 0!==r)$t(r);else{if("undefined"==typeof window)throw new Error("unsupported execution environment");$t(window)}function 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