tbonelee commented on code in PR #4788:
URL: https://github.com/apache/zeppelin/pull/4788#discussion_r1715210056
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zeppelin-web/src/app/visualization/builtins/visualization-d3network.js:
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@@ -166,20 +166,20 @@ export default class NetworkVisualization extends
Visualization {
const drag = d3.behavior.drag()
.origin((d) => d)
- .on('dragstart', function(d) {
+ .on('dragstart', (d) => {
console.log('dragstart');
d3.event.sourceEvent.stopPropagation();
d3.select(this).classed('dragging', true);
self.force.stop();
})
- .on('drag', function(d) {
+ .on('drag', (d) => {
console.log('drag');
d.px += d3.event.dx;
d.py += d3.event.dy;
d.x += d3.event.dx;
d.y += d3.event.dy;
})
- .on('dragend', function(d) {
+ .on('dragend', (d) => {
console.log('dragend');
d.fixed = true;
d3.select(this).classed('dragging', false);
Review Comment:
I think if we need to change it to an arrow function, we should use
`d3.event.sourceEvent.target` instead of `this`.
I haven't tested it personally, but I referred to [the D3 Library V3
documentation](https://github.com/d3/d3-3.x-api-reference/blob/master/Selections.md#d3_event).
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