// https://d3js.org/d3-drag/ v1.2.5 Copyright 2019 Mike Bostock
!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports,require("d3-dispatch"),require("d3-selection")):"function"==typeof define&&define.amd?define(["exports","d3-dispatch","d3-selection"],e):e((t=t||self).d3=t.d3||{},t.d3,t.d3)}(this,function(t,e,n){"use strict";function o(){n.event.stopImmediatePropagation()}function i(){n.event.preventDefault(),n.event.stopImmediatePropagation()}function r(t){var e=t.document.documentElement,o=n.select(t).on("dragstart.drag",i,!0);"onselectstart"in e?o.on("selectstart.drag",i,!0):(e.__noselect=e.style.MozUserSelect,e.style.MozUserSelect="none")}function c(t,e){var o=t.document.documentElement,r=n.select(t).on("dragstart.drag",null);e&&(r.on("click.drag",i,!0),setTimeout(function(){r.on("click.drag",null)},0)),"onselectstart"in o?r.on("selectstart.drag",null):(o.style.MozUserSelect=o.__noselect,delete o.__noselect)}function u(t){return function(){return t}}function s(t,e,n,o,i,r,c,u,s,a){this.target=t,this.type=e,this.subject=n,this.identifier=o,this.active=i,this.x=r,this.y=c,this.dx=u,this.dy=s,this._=a}function a(){return!n.event.ctrlKey&&!n.event.button}function l(){return this.parentNode}function d(t){return null==t?{x:n.event.x,y:n.event.y}:t}function f(){return navigator.maxTouchPoints||"ontouchstart"in this}s.prototype.on=function(){var t=this._.on.apply(this._,arguments);return t===this._?this:t},t.drag=function(){var t,h,v,p,g=a,m=l,y=d,b=f,_={},w=e.dispatch("start","drag","end"),x=0,T=0;function j(t){t.on("mousedown.drag",k).filter(b).on("touchstart.drag",P).on("touchmove.drag",q).on("touchend.drag touchcancel.drag",z).style("touch-action","none").style("-webkit-tap-highlight-color","rgba(0,0,0,0)")}function k(){if(!p&&g.apply(this,arguments)){var e=D("mouse",m.apply(this,arguments),n.mouse,this,arguments);e&&(n.select(n.event.view).on("mousemove.drag",E,!0).on("mouseup.drag",M,!0),r(n.event.view),o(),v=!1,t=n.event.clientX,h=n.event.clientY,e("start"))}}function E(){if(i(),!v){var e=n.event.clientX-t,o=n.event.clientY-h;v=e*e+o*o>T}_.mouse("drag")}function M(){n.select(n.event.view).on("mousemove.drag mouseup.drag",null),c(n.event.view,v),i(),_.mouse("end")}function P(){if(g.apply(this,arguments)){var t,e,i=n.event.changedTouches,r=m.apply(this,arguments),c=i.length;for(t=0;t<c;++t)(e=D(i[t].identifier,r,n.touch,this,arguments))&&(o(),e("start"))}}function q(){var t,e,o=n.event.changedTouches,r=o.length;for(t=0;t<r;++t)(e=_[o[t].identifier])&&(i(),e("drag"))}function z(){var t,e,i=n.event.changedTouches,r=i.length;for(p&&clearTimeout(p),p=setTimeout(function(){p=null},500),t=0;t<r;++t)(e=_[i[t].identifier])&&(o(),e("end"))}function D(t,e,o,i,r){var c,u,a,l=o(e,t),d=w.copy();if(n.customEvent(new s(j,"beforestart",c,t,x,l[0],l[1],0,0,d),function(){return null!=(n.event.subject=c=y.apply(i,r))&&(u=c.x-l[0]||0,a=c.y-l[1]||0,!0)}))return function f(h){var v,p=l;switch(h){case"start":_[t]=f,v=x++;break;case"end":delete _[t],--x;case"drag":l=o(e,t),v=x}n.customEvent(new s(j,h,c,t,v,l[0]+u,l[1]+a,l[0]-p[0],l[1]-p[1],d),d.apply,d,[h,i,r])}}return j.filter=function(t){return arguments.length?(g="function"==typeof t?t:u(!!t),j):g},j.container=function(t){return arguments.length?(m="function"==typeof t?t:u(t),j):m},j.subject=function(t){return arguments.length?(y="function"==typeof t?t:u(t),j):y},j.touchable=function(t){return arguments.length?(b="function"==typeof t?t:u(!!t),j):b},j.on=function(){var t=w.on.apply(w,arguments);return t===w?j:t},j.clickDistance=function(t){return arguments.length?(T=(t=+t)*t,j):Math.sqrt(T)},j},t.dragDisable=r,t.dragEnable=c,Object.defineProperty(t,"__esModule",{value:!0})});