import "../core/document";

import "../core/vendor";

import "../selection/on";

var d3_event_dragSelect = d3_vendorSymbol(d3_documentElement.style, "userSelect");

function d3_event_dragSuppress(type) {

var selectstart = "selectstart." + type,

dragstart = "dragstart." + type,

click = "click." + type,

w = d3.select(d3_window).on(selectstart, d3_eventPreventDefault).on(dragstart, d3_eventPreventDefault),

style = d3_documentElement.style,

select = style[d3_event_dragSelect];

style[d3_event_dragSelect] = "none";

return function(suppressClick) {

w.on(selectstart, null).on(dragstart, null);

style[d3_event_dragSelect] = select;

if (suppressClick) { // suppress the next click, but only if it’s immediate

function off() { w.on(click, null); }

w.on(click, function() { d3_eventPreventDefault(); off(); }, true);

setTimeout(off, 0);

}

};

}