Update d3-selection.

package.json

@@ -1,6 +1,9 @@
 {
   "name": "d3-drag",
-  "version": "1.2.5",
+  "version": "2.0.0-rc.1",
+  "publishConfig": {
+    "tag": "next"
+  },
   "description": "Drag and drop SVG, HTML or Canvas using mouse or touch input.",
   "keywords": [
     "d3",
@@ -34,8 +37,8 @@
     "postpublish": "git push && git push --tags && cd ../d3.github.com && git pull && cp ../${npm_package_name}/dist/${npm_package_name}.js ${npm_package_name}.v${npm_package_version%%.*}.js && cp ../${npm_package_name}/dist/${npm_package_name}.min.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git add ${npm_package_name}.v${npm_package_version%%.*}.js ${npm_package_name}.v${npm_package_version%%.*}.min.js && git commit -m \"${npm_package_name} ${npm_package_version}\" && git push && cd - && zip -j dist/${npm_package_name}.zip -- LICENSE README.md dist/${npm_package_name}.js dist/${npm_package_name}.min.js"
   },
   "dependencies": {
-    "d3-dispatch": "1",
-    "d3-selection": "1"
+    "d3-dispatch": ">=2.0.0-rc.1",
+    "d3-selection": ">=2.0.0-rc.3"
   },
   "sideEffects": false,
   "devDependencies": {

src/constant.js

@@ -1,5 +1 @@
-export default function(x) {
-  return function() {
-    return x;
-  };
-}
+export default x => () => x;

src/drag.js

@@ -1,20 +1,20 @@
 import {dispatch} from "d3-dispatch";
-import {event, customEvent, select, mouse, touch} from "d3-selection";
+import {select, pointer} from "d3-selection";
 import nodrag, {yesdrag} from "./nodrag.js";
 import noevent, {nopropagation} from "./noevent.js";
 import constant from "./constant.js";
 import DragEvent from "./event.js";
 
 // Ignore right-click, since that should open the context menu.
-function defaultFilter() {
+function defaultFilter(event) {
   return !event.ctrlKey && !event.button;
 }
 
 function defaultContainer() {
   return this.parentNode;
 }
 
-function defaultSubject(d) {
+function defaultSubject(event, d) {
   return d == null ? {x: event.x, y: event.y} : d;
 }
 
@@ -47,94 +47,119 @@ export default function() {
         .style("-webkit-tap-highlight-color", "rgba(0,0,0,0)");
   }
 
-  function mousedowned() {
-    if (touchending || !filter.apply(this, arguments)) return;
-    var gesture = beforestart("mouse", container.apply(this, arguments), mouse, this, arguments);
+  function mousedowned(event, d) {
+    if (touchending || !filter.call(this, event, d)) return;
+    var gesture = beforestart(this, container.call(this, event, d), event, d, "mouse");
     if (!gesture) return;
     select(event.view).on("mousemove.drag", mousemoved, true).on("mouseup.drag", mouseupped, true);
     nodrag(event.view);
-    nopropagation();
+    nopropagation(event);
     mousemoving = false;
     mousedownx = event.clientX;
     mousedowny = event.clientY;
-    gesture("start");
+    gesture("start", event);
   }
 
-  function mousemoved() {
-    noevent();
+  function mousemoved(event) {
+    noevent(event);
     if (!mousemoving) {
       var dx = event.clientX - mousedownx, dy = event.clientY - mousedowny;
       mousemoving = dx * dx + dy * dy > clickDistance2;
     }
-    gestures.mouse("drag");
+    gestures.mouse("drag", event);
   }
 
-  function mouseupped() {
+  function mouseupped(event) {
     select(event.view).on("mousemove.drag mouseup.drag", null);
     yesdrag(event.view, mousemoving);
-    noevent();
-    gestures.mouse("end");
+    noevent(event);
+    gestures.mouse("end", event);
   }
 
-  function touchstarted() {
-    if (!filter.apply(this, arguments)) return;
+  function touchstarted(event, d) {
+    if (!filter.call(this, event, d)) return;
     var touches = event.changedTouches,
-        c = container.apply(this, arguments),
+        c = container.call(this, event, d),
         n = touches.length, i, gesture;
 
     for (i = 0; i < n; ++i) {
-      if (gesture = beforestart(touches[i].identifier, c, touch, this, arguments)) {
-        nopropagation();
-        gesture("start");
+      if (gesture = beforestart(this, c, event, d, touches[i].identifier, touches[i])) {
+        nopropagation(event);
+        gesture("start", event, touches[i]);
       }
     }
   }
 
-  function touchmoved() {
+  function touchmoved(event) {
     var touches = event.changedTouches,
         n = touches.length, i, gesture;
 
     for (i = 0; i < n; ++i) {
       if (gesture = gestures[touches[i].identifier]) {
-        noevent();
-        gesture("drag");
+        noevent(event);
+        gesture("drag", event, touches[i]);
       }
     }
   }
 
-  function touchended() {
+  function touchended(event) {
     var touches = event.changedTouches,
         n = touches.length, i, gesture;
 
     if (touchending) clearTimeout(touchending);
     touchending = setTimeout(function() { touchending = null; }, 500); // Ghost clicks are delayed!
     for (i = 0; i < n; ++i) {
       if (gesture = gestures[touches[i].identifier]) {
-        nopropagation();
-        gesture("end");
+        nopropagation(event);
+        gesture("end", event, touches[i]);
       }
     }
   }
 
-  function beforestart(id, container, point, that, args) {
-    var p = point(container, id), s, dx, dy,
-        sublisteners = listeners.copy();
-
-    if (!customEvent(new DragEvent(drag, "beforestart", s, id, active, p[0], p[1], 0, 0, sublisteners), function() {
-      if ((event.subject = s = subject.apply(that, args)) == null) return false;
-      dx = s.x - p[0] || 0;
-      dy = s.y - p[1] || 0;
-      return true;
-    })) return;
-
-    return function gesture(type) {
+  function beforestart(that, container, event, d, identifier, touch) {
+    var dispatch = listeners.copy(),
+        p = pointer(touch || event, container), dx, dy,
+        s;
+
+    if ((s = subject.call(that, new DragEvent("beforestart", {
+        sourceEvent: event,
+        target: drag,
+        identifier,
+        active,
+        x: p[0],
+        y: p[1],
+        dx: 0,
+        dy: 0,
+        dispatch
+      }), d)) == null) return;
+
+    dx = s.x - p[0] || 0;
+    dy = s.y - p[1] || 0;
+
+    return function gesture(type, event, touch) {
       var p0 = p, n;
       switch (type) {
-        case "start": gestures[id] = gesture, n = active++; break;
-        case "end": delete gestures[id], --active; // nobreak
-        case "drag": p = point(container, id), n = active; break;
+        case "start": gestures[identifier] = gesture, n = active++; break;
+        case "end": delete gestures[identifier], --active; // nobreak
+        case "drag": p = pointer(touch || event, container), n = active; break;
       }
-      customEvent(new DragEvent(drag, type, s, id, n, p[0] + dx, p[1] + dy, p[0] - p0[0], p[1] - p0[1], sublisteners), sublisteners.apply, sublisteners, [type, that, args]);
+      dispatch.call(
+        type,
+        that,
+        new DragEvent(type, {
+          sourceEvent: event,
+          subject: s,
+          target: drag,
+          identifier,
+          active: n,
+          x: p[0] + dx,
+          y: p[1] + dy,
+          dx: p[0] - p0[0],
+          dy: p[1] - p0[1],
+          dispatch
+        }),
+        d
+      );
     };
   }
 

src/event.js

@@ -1,14 +1,25 @@
-export default function DragEvent(target, type, subject, id, active, x, y, dx, dy, dispatch) {
-  this.target = target;
-  this.type = type;
-  this.subject = subject;
-  this.identifier = id;
-  this.active = active;
-  this.x = x;
-  this.y = y;
-  this.dx = dx;
-  this.dy = dy;
-  this._ = dispatch;
+export default function DragEvent(type, {
+  sourceEvent,
+  subject,
+  target,
+  identifier,
+  active,
+  x, y, dx, dy,
+  dispatch
+}) {
+  Object.defineProperties(this, {
+    type: {value: type, enumerable: true, configurable: true},
+    sourceEvent: {value: sourceEvent, enumerable: true, configurable: true},
+    subject: {value: subject, enumerable: true, configurable: true},
+    target: {value: target, enumerable: true, configurable: true},
+    identifier: {value: identifier, enumerable: true, configurable: true},
+    active: {value: active, enumerable: true, configurable: true},
+    x: {value: x, enumerable: true, configurable: true},
+    y: {value: y, enumerable: true, configurable: true},
+    dx: {value: dx, enumerable: true, configurable: true},
+    dy: {value: dy, enumerable: true, configurable: true},
+    _: {value: dispatch}
+  });
 }
 
 DragEvent.prototype.on = function() {

src/noevent.js

@@ -1,10 +1,8 @@
-import {event} from "d3-selection";
-
-export function nopropagation() {
+export function nopropagation(event) {
   event.stopImmediatePropagation();
 }
 
-export default function() {
+export default function(event) {
   event.preventDefault();
   event.stopImmediatePropagation();
 }

yarn.lock

@@ -174,10 +174,10 @@ d3-dispatch@1:
   resolved "https://registry.yarnpkg.com/d3-dispatch/-/d3-dispatch-1.0.5.tgz#e25c10a186517cd6c82dd19ea018f07e01e39015"
   integrity sha512-vwKx+lAqB1UuCeklr6Jh1bvC4SZgbSqbkGBLClItFBIYH4vqDJCA7qfoy14lXmJdnBOdxndAMxjCbImJYW7e6g==
 
-d3-selection@1:
-  version "1.4.0"
-  resolved "https://registry.yarnpkg.com/d3-selection/-/d3-selection-1.4.0.tgz#ab9ac1e664cf967ebf1b479cc07e28ce9908c474"
-  integrity sha512-EYVwBxQGEjLCKF2pJ4+yrErskDnz5v403qvAid96cNdCMr8rmCYfY5RGzWz24mdIbxmDf6/4EAH+K9xperD5jg==
+d3-selection@2:
+  version "2.0.0-rc.2"
+  resolved "https://registry.yarnpkg.com/d3-selection/-/d3-selection-2.0.0-rc.2.tgz#530fffde9fc6007d90c79d39bc4b2777e7288f6e"
+  integrity sha512-3sXAgCMsIi6zmZFGwgI2fFi9f99vzBRUKZoKOJq8yWDDAci00QgJQfe7xW0VqUW2hItUvGVl61M8WY4Cxg8soQ==
 
 debug@^4.0.1:
   version "4.1.1"