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[WIP] additional front-end features #34

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[WIP] additional front-end features #34

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29 changes: 29 additions & 0 deletions app/javascript/app/components/controlPanel.js
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Original file line number Diff line number Diff line change
Expand Up @@ -13,6 +13,13 @@ const getSelectedOffers = () =>
.map(box => box.id);

class ControlPanel extends React.Component {
constructor(props) {
super(props);

// most recently-clicked checkbox, stored to allow range selection
this.lastClicked = null;
}

render() {
let nullCheck = this.props.appState.isOffersListNull();
if (nullCheck) {
Expand Down Expand Up @@ -43,6 +50,28 @@ class ControlPanel extends React.Component {
defaultChecked={false}
className="offer-checkbox"
id={p.offerId}
onClick={event => {
// range selection using shift key
if (this.lastClicked && event.shiftKey) {
let first = false, last = false;

Array.prototype.forEach.call(getCheckboxElements(), box => {
if (!first && (box.id == p.offerId || box.id == this.lastClicked)) {
first = true;
box.checked = true;
}

if (first && !last) {
if (box.id == p.offerId || box.id == this.lastClicked) {
last = true;
}
box.checked = true;
}
});
}

this.lastClicked = p.offerId;
}}
/>,

style: { width: 0.01, textAlign: 'center' },
Expand Down