feat(selection): add drag handlers closes #444

example/src/Overview/index.js

@@ -4,6 +4,9 @@ import ReactFlow, { removeElements, addEdge, MiniMap, Controls, Background, isNo
 
 const onNodeDragStart = (event, node) => console.log('drag start', node);
 const onNodeDragStop = (event, node) => console.log('drag stop', node);
+const onSelectionDrag = (event, nodes) => console.log('selection drag', nodes);
+const onSelectionDragStart = (event, nodes) => console.log('selection drag start', nodes);
+const onSelectionDragStop = (event, nodes) => console.log('selection drag stop', nodes);
 const onElementClick = (event, element) => console.log(`${isNode(element) ? 'node' : 'edge'} click:`, element);
 const onSelectionChange = (elements) => console.log('selection change', elements);
 const onLoad = (reactFlowInstance) => {
@@ -120,6 +123,9 @@ const OverviewFlow = () => {
       onConnect={onConnect}
       onNodeDragStart={onNodeDragStart}
       onNodeDragStop={onNodeDragStop}
+      onSelectionDragStart={onSelectionDragStart}
+      onSelectionDrag={onSelectionDrag}
+      onSelectionDragStop={onSelectionDragStop}
       onSelectionChange={onSelectionChange}
       onMoveEnd={onMoveEnd}
       onLoad={onLoad}