frontend/src/containers/app/map/layers/ObjectHoverLayer.js


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import { connect } from 'react-redux'
import { addRackToTile } from '../../../../actions/topology/room'
import ObjectHoverLayerComponent from '../../../../components/app/map/layers/ObjectHoverLayerComponent'
import { findTileWithPosition } from '../../../../util/tile-calculations'

const mapStateToProps = state => {
    return {
        mapPosition: state.map.position,
        mapScale: state.map.scale,
        isEnabled: () => state.construction.inRackConstructionMode,
        isValid: (x, y) => {
            if (state.interactionLevel.mode !== 'ROOM') {
                return false
            }

            const currentRoom = state.objects.room[state.interactionLevel.roomId]
            const tiles = currentRoom.tileIds.map(
                tileId => state.objects.tile[tileId],
            )
            const tile = findTileWithPosition(tiles, x, y)

            return !(tile === null || tile.objectType)
        },
    }
}

const mapDispatchToProps = dispatch => {
    return {
        onClick: (x, y) => dispatch(addRackToTile(x, y)),
    }
}

const ObjectHoverLayer = connect(mapStateToProps, mapDispatchToProps)(
    ObjectHoverLayerComponent,
)

export default ObjectHoverLayer