perf: increase startup time of event dragging (#1020)

jdaberkow · jquense · commit 167b69f05fad · 2018-11-07T07:59:36.000-05:00
diff --git a/src/addons/dragAndDrop/withDragAndDrop.js b/src/addons/dragAndDrop/withDragAndDrop.js
@@ -97,7 +97,7 @@ export default function withDragAndDrop(Calendar) {
         weekWrapper: WeekWrapper,
       })
 
-      this.state = {}
+      this.state = { interacting: false }
     }
 
     getChildContext() {
@@ -118,7 +118,7 @@ export default function withDragAndDrop(Calendar) {
     }
 
     handleInteractionStart = () => {
-      this.setState({ interacting: true })
+      if (this.state.interacting === false) this.setState({ interacting: true })
     }
 
     handleInteractionEnd = interactionInfo => {

Original file line number	Diff line number	Diff line change
`@@ -97,7 +97,7 @@ export default function withDragAndDrop(Calendar) {`
`97`	`97`	`weekWrapper: WeekWrapper,`
`98`	`98`	`})`
`99`	`99`
`100`		`- this.state = {}`
	`100`	`+ this.state = { interacting: false }`
`101`	`101`	`}`
`102`	`102`
`103`	`103`	`getChildContext() {`
`@@ -118,7 +118,7 @@ export default function withDragAndDrop(Calendar) {`
`118`	`118`	`}`
`119`	`119`
`120`	`120`	`handleInteractionStart = () => {`
`121`		`- this.setState({ interacting: true })`
	`121`	`+ if (this.state.interacting === false) this.setState({ interacting: true })`
`122`	`122`	`}`
`123`	`123`
`124`	`124`	`handleInteractionEnd = interactionInfo => {`