react-dnd-html5-backend/dist/umd/ReactDnDHTML5Backend.min.js

HTML5 backend for React DnD

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0:e.length)||0,dropTargetIds:this.dropTargetIds.length,dragEnterTargetIds:this.dragEnterTargetIds.length,dragOverTargetIds:(null===(t=this.dragOverTargetIds)||void 0===t?void 0:t.length)||0}}},{key:"window",get:function(){return this.options.window}},{key:"document",get:function(){return this.options.document}},{key:"rootElement",get:function(){return this.options.rootElement}},{key:"setup",value:function(){var e=this.rootElement;if(void 0!==e){if(e.__isReactDndBackendSetUp)throw new Error("Cannot have two HTML5 backends at the same time.");e.__isReactDndBackendSetUp=!0,this.addEventListeners(e)}}},{key:"teardown",value:function(){var e,t=this.rootElement;void 0!==t&&(t.__isReactDndBackendSetUp=!1,this.removeEventListeners(this.rootElement),this.clearCurrentDragSourceNode(),this.asyncEndDragFrameId&&(null===(e=this.window)||void 0===e||e.cancelAnimationFrame(this.asyncEndDragFrameId)))}},{key:"connectDragPreview",value:function(e,t,r){var n=this;return 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t=this;this.clearCurrentDragSourceNode(),this.currentDragSourceNode=e,this.mouseMoveTimeoutTimer=setTimeout((function(){var e;return null===(e=t.rootElement)||void 0===e?void 0:e.addEventListener("mousemove",t.endDragIfSourceWasRemovedFromDOM,!0)}),1e3)}},{key:"clearCurrentDragSourceNode",value:function(){var e;return!!this.currentDragSourceNode&&(this.currentDragSourceNode=null,this.rootElement&&(null===(e=this.window)||void 0===e||e.clearTimeout(this.mouseMoveTimeoutTimer||void 0),this.rootElement.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)}}])&&k(t.prototype,r),e}();e.HTML5Backend=function(e,t,r){return new j(e,t,r)},e.NativeTypes=D,e.getEmptyImage=function(){return A||((A=new Image).src="data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="),A},Object.defineProperty(e,"__esModule",{value:!0})}));