Mailspring/internal_packages/thread-list/lib/selected-items-stack.jsx

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import _ from 'underscore'
import React, {Component, PropTypes} from 'react'
import {ListensToObservable} from 'nylas-component-kit'
import ThreadListStore from './thread-list-store'
function getObservable() {
return (
ThreadListStore.selectionObservable()
.map(items => items.length)
)
}
function getStateFromObservable(selectionCount) {
if (!selectionCount) {
return {selectionCount: 0}
}
return {selectionCount}
}
class SelectedItemsStack extends Component {
static displayName = "SelectedItemsStack";
static propTypes = {
selectionCount: PropTypes.number,
};
onClearSelection = ()=> {
ThreadListStore.dataSource().selection.clear()
};
static containerRequired = false;
render() {
const {selectionCount} = this.props
if (selectionCount <= 1) {
return <span />
}
const cardCount = Math.min(5, selectionCount)
return (
<div className="selected-items-stack">
<div className="selected-items-stack-content">
<div className="stack">
{_.times(cardCount, (idx) => {
let deg = idx * 0.9;
if (idx === 1) {
deg += 0.5
}
let transform = `rotate(${deg}deg)`
if (idx === cardCount - 1) {
transform += ' translate(2px, 3px)'
}
const style = {
transform,
zIndex: 5 - idx,
}
return <div style={style} className="card"/>
})}
</div>
<div className="count-info">
<div className="count">{selectionCount}</div>
<div className="count-message">messages selected</div>
<div className="clear btn" onClick={this.onClearSelection}>Clear Selection</div>
</div>
</div>
</div>
)
}
}
export default ListensToObservable(SelectedItemsStack, {getObservable, getStateFromObservable})