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			 * @file ext-connector.js
			 *
			 * @license MIT
			 *
			 * @copyright 2010 Alexis Deveria
			 *
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o,a=r.x+r.width/2,c=r.y+r.height/2,u=t-a,s=e-c;return{x:a+u*(o=Math.abs(s/u)<r.height/r.width?r.width/2/Math.abs(u):s?r.height/2/Math.abs(s):0),y:c+s*o}},n=(r=e).canvas,o=n.getElem,i=t.$,a=t.svgroot,c=n.addSVGElementFromJson,u=t.selectorManager,s=".se_connector",f=i.data,g=t.svgcontent,m=!1,b=[],x=[],function(){var t=n.groupSelectedElements;n.groupSelectedElements=function(){n.removeFromSelection(i(s).toArray());for(var e=arguments.length,r=new Array(e),o=0;o<e;o++)r[o]=arguments[o];return t.apply(this,r)};var e=n.moveSelectedElements;n.moveSelectedElements=function(){for(var t=arguments.length,r=new Array(t),n=0;n<t;n++)r[n]=arguments[n];var o=e.apply(this,r);return A(),o},y=n.getEditorNS()}(),I=[{id:"mode_connect",type:"mode",icon:r.curConfig.imgPath+"cut.png",includeWith:{button:"#tool_line",isDefault:!1,position:1},events:{click:function click(){n.setMode("connector")}}}],T.next=17,ai(r.curPrefs.lang);case 17:return k=T.sent,T.abrupt("return",{name:k.name,svgicons:"conn.svg",buttons:k.buttons.map((function(t,e){return Object.assign(I[e],t)})),addLangData:function addLangData(t){t.lang;return{data:k.langList}},mouseDown:function mouseDown(t){var e=t.event;l=t.start_x,p=t.start_y;var o=n.getMode(),a=r.curConfig.initStroke;if("connector"===o){if(m)return;var u=e.target,s=i(u).parents();if(-1!==i.inArray(g,s)){var v=i(u).closest("foreignObject");d=v.length?v[0]:u;var y=n.getStrokedBBox([d]),b=y.x+y.width/2,x=y.y+y.height/2;m=!0,h=c({element:"polyline",attr:{id:n.getNextId(),points:b+","+x+" "+b+","+x+" "+l+","+p,stroke:"#"+a.color,"stroke-width":d.stroke_width&&0!==d.stroke_width?d.stroke_width:a.width,fill:"none",opacity:a.opacity,style:"pointer-events:none"}}),f(h,"start_bb",y)}return{started:!0}}"select"===o&&j()},mouseMove:function mouseMove(t){var e=n.getZoom(),r=t.mouse_x/e,o=t.mouse_y/e,i=r-l,a=o-p,c=n.getMode();if("connector"===c&&m){var 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E(h,"end",_.x,_.y,!0),i(h).data("c_start",a).data("c_end",c).data("end_bb",x),y=n.getEditorNS(!0),h.setAttributeNS(y,"se:connector",f),h.setAttribute("class",s.substr(1)),h.setAttribute("opacity",1),n.addToSelection([h]),n.moveToBottomSelectedElement(),u.requestSelector(h).showGrips(!1),{keep:!0,element:h,started:m=!1}}},selectedChanged:function selectedChanged(t){if(i(g).find(s).length){"connector"===n.getMode()&&n.setMode("select");for(var e=(x=t.elems).length;e--;){var r=x[e];r&&f(r,"c_start")?(u.requestSelector(r).showGrips(!1),t.selectedElement&&!t.multiselected?_(!0):_(!1)):_(!1)}A()}},elementChanged:function elementChanged(t){var e=t.elems[0];if(e){if("svg"===e.tagName&&"svgcontent"===e.id&&(g=e,P()),e.getAttribute("marker-start")||e.getAttribute("marker-mid")||e.getAttribute("marker-end")){var r=e.getAttribute("marker-start"),a=e.getAttribute("marker-mid"),u=e.getAttribute("marker-end");if(h=e,i(e).data("start_off",Boolean(r)).data("end_off",Boolean(u)),"line"===e.tagName&&a){var l=Number(e.getAttribute("x1")),p=Number(e.getAttribute("x2")),d=Number(e.getAttribute("y1")),v=Number(e.getAttribute("y2")),y=e.id,m=c({element:"polyline",attr:{points:l+","+d+(" "+(l+p)/2+","+(d+v)/2+" ")+p+","+v,stroke:e.getAttribute("stroke"),"stroke-width":e.getAttribute("stroke-width"),"marker-mid":a,fill:"none",opacity:e.getAttribute("opacity")||1}});i(e).after(m).remove(),n.clearSelection(),m.id=y,n.addToSelection([m]),e=m}}if(e.getAttribute("class")===s.substr(1)){var b=o(f(e,"c_start"));A([b])}else A()}},IDsUpdated:function IDsUpdated(t){var e=[];return t.elems.forEach((function(r){"se:connector"in r.attr&&(r.attr["se:connector"]=r.attr["se:connector"].split(" ").map((function(e){return t.changes[e]})).join(" "),/. 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