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added maxItems property #95

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added maxItems property #95

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17 changes: 14 additions & 3 deletions src/SelectableGroup.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ export type TSelectableGroupProps = {
resetOnStart?: boolean
disabled?: boolean
delta?: number
maxItems?: number
allowAltClick?: boolean
allowCtrlClick?: boolean
allowMetaClick?: boolean
Expand Down Expand Up @@ -105,6 +106,7 @@ export class SelectableGroup extends Component<TSelectableGroupProps> {
deselectOnEsc: true,
fixedPosition: false,
delta: 1,
maxItems: 0,
allowAltClick: false,
allowCtrlClick: false,
allowMetaClick: false,
Expand Down Expand Up @@ -255,7 +257,7 @@ export class SelectableGroup extends Component<TSelectableGroupProps> {
registerSelectable = (selectableItem: TSelectableItem) => {
this.registry.add(selectableItem)

if (selectableItem.state.isSelected) {
if (selectableItem.state.isSelected ) {
this.selectedItems.add(selectableItem)
}
}
Expand Down Expand Up @@ -399,7 +401,7 @@ export class SelectableGroup extends Component<TSelectableGroupProps> {
processItem(options: TProcessItemOptions) {
const { item, tolerance, selectboxBounds, enableDeselect, mixedDeselect, isFromClick } = options

const { delta } = this.props
const { delta, maxItems } = this.props
const isCollided = doObjectsCollide(selectboxBounds, item.bounds!, tolerance, delta)
const { isSelecting, isSelected } = item.state

Expand Down Expand Up @@ -428,7 +430,16 @@ export class SelectableGroup extends Component<TSelectableGroupProps> {

const canSelect = mixedDeselect ? !item.deselected : !this.deselectionStarted

if (!isSelecting && !isSelected && canSelect) {
let ignore = false;
if(maxItems && maxItems > 0)
{
if(maxItems <= this.selectingItems.size)
{
ignore = true;
}
}

if (!isSelecting && !isSelected && canSelect && !ignore) {
item.setState({ isSelecting: true })

this.selectionStarted = true
Expand Down