fix: filter bar position (DHIS2-9453) (#1073)

* fix: filter bar position (DHIS2-9453)

The calculation of the position of the filter bar was based on the
height of the control bar.
After the change for the scrollbar, the filter bar was positioned lower
than where it should have.
Removing the height of the control bar from the top position of the
filter bar puts it back in the right place.

* chore: explain the FilterBar top position value

Co-authored-by: Jan Henrik Øverland <jan@dhis2.org>

src/components/FilterBar/FilterBar.js

@@ -5,8 +5,6 @@ import PropTypes from 'prop-types'
 import FilterBadge from './FilterBadge'
 
 import { sGetNamedItemFilters } from '../../reducers/itemFilters'
-import { sGetControlBarUserRows } from '../../reducers/controlBar'
-import { getControlBarHeight } from '../ControlBar/controlBarDimensions'
 import { acRemoveItemFilter } from '../../actions/itemFilters'
 import { acSetActiveModalDimension } from '../../actions/activeModalDimension'
 
@@ -25,12 +23,11 @@ export class FilterBar extends Component {
     }
 
     render() {
-        const { filters, userRows } = this.props
-
-        const top = getControlBarHeight(userRows) + 10
+        const { filters } = this.props
 
         return filters.length ? (
-            <div className={classes.bar} style={{ top }}>
+            // the 3 is calculated so that the FilterBar has the same vertical position as the TitleBar in relation to the ControlBar
+            <div className={classes.bar} style={{ top: 3 }}>
                 {filters.map(filter => (
                     <FilterBadge
                         key={filter.id}
@@ -48,7 +45,6 @@ FilterBar.propTypes = {
     filters: PropTypes.array.isRequired,
     removeItemFilter: PropTypes.func.isRequired,
     setActiveModalDimension: PropTypes.func,
-    userRows: PropTypes.number,
 }
 
 FilterBar.defaultProps = {
@@ -58,7 +54,6 @@ FilterBar.defaultProps = {
 
 const mapStateToProps = state => ({
     filters: sGetNamedItemFilters(state),
-    userRows: sGetControlBarUserRows(state),
 })
 
 export default connect(mapStateToProps, {