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Recreate Split when children change #746

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Recreate Split when children change #746

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2bfb0d8
Recreate Split when children change
adam-binks Jun 1, 2022
0a8d945
gutter -> gutterFn
adam-binks Jun 1, 2022
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52 changes: 36 additions & 16 deletions packages/react-split/src/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -6,30 +6,18 @@ class SplitWrapper extends React.Component {
componentDidMount() {
const { children, gutter, ...options } = this.props

options.gutter = (index, direction) => {
let gutterElement

if (gutter) {
gutterElement = gutter(index, direction)
} else {
gutterElement = document.createElement('div')
gutterElement.className = `gutter gutter-${direction}`
}

// eslint-disable-next-line no-underscore-dangle
gutterElement.__isSplitGutter = true
return gutterElement
}
options.gutter = this.makeGutterFn(gutter)

this.split = Split(this.parent.children, options)
}

componentDidUpdate(prevProps) {
const { children, minSize, sizes, collapsed, ...options } = this.props
const { children, minSize, sizes, collapsed, gutter, ...options } = this.props
const {
minSize: prevMinSize,
sizes: prevSizes,
collapsed: prevCollapsed,
children: prevChildren,
} = prevProps

const otherProps = [
Expand All @@ -41,6 +29,7 @@ class SplitWrapper extends React.Component {
'dragInterval',
'direction',
'cursor',
'children',
]

let needsRecreate = otherProps
Expand All @@ -63,12 +52,26 @@ class SplitWrapper extends React.Component {
needsRecreate = needsRecreate || minSize !== prevMinSize
}

// If children have changed, remove the old gutters
if (prevChildren !== children) {
for (var i = this.parent.children.length - 1; i >=0; i--) {
if (this.parent.children[i].__isSplitGutter) {
this.parent.children[i].remove()
}
}
}

// Destroy and re-create split if options changed
if (needsRecreate) {
options.minSize = minSize
options.sizes = sizes || this.split.getSizes()
if (prevChildren !== children && options.sizes.length !== children.count) {
options.sizes = undefined
}
this.split.destroy(true, true)
options.gutter = (index, direction, pairB) => pairB.previousSibling
options.gutter = (index, direction, pairB) => {
return pairB.previousSibling.__isSplitGutter ? pairB.previousSibling : this.makeGutterFn(gutter)()
}
this.split = Split(
Array.from(this.parent.children).filter(
// eslint-disable-next-line no-underscore-dangle
Expand Down Expand Up @@ -138,6 +141,23 @@ class SplitWrapper extends React.Component {
</div>
)
}

makeGutterFn(gutterFn) {
return function (index, direction) {
let gutterElement

if (gutterFn) {
gutterElement = gutterFn(index, direction)
} else {
gutterElement = document.createElement('div')
gutterElement.className = `gutter gutter-${direction}`
}

// eslint-disable-next-line no-underscore-dangle
gutterElement.__isSplitGutter = true
return gutterElement
}
}
}

SplitWrapper.propTypes = {
Expand Down