index.community/frontend/src/components/InstanceSearch.tsx
2018-09-01 19:54:13 +02:00

90 lines
3 KiB
TypeScript

import * as React from 'react';
import { connect } from 'react-redux';
import { Dispatch } from 'redux';
import { Button, MenuItem } from '@blueprintjs/core';
import { IconNames } from '@blueprintjs/icons';
import { IItemRendererProps, ItemPredicate, Select } from '@blueprintjs/select';
import { selectAndLoadInstance } from '../redux/actions';
import { IAppState, IInstance } from '../redux/types';
interface IInstanceSearchProps {
currentInstanceName: string | null;
instances?: IInstance[];
selectAndLoadInstance: (instanceName: string) => void;
}
const InstanceSelect = Select.ofType<IInstance>();
class InstanceSearchImpl extends React.Component<IInstanceSearchProps> {
public render() {
return (
<InstanceSelect
items={this.props.instances || []}
itemRenderer={this.itemRenderer}
onItemSelect={this.onItemSelect}
itemPredicate={this.itemPredicate}
disabled={!this.props.instances}
initialContent={this.renderInitialContent()}
noResults={this.renderNoResults()}
popoverProps={{popoverClassName: "fediverse-instance-search-popover"}}
>
<Button
icon={IconNames.SELECTION}
rightIcon={IconNames.CARET_DOWN}
text={this.props.currentInstanceName || ("Select an instance")}
disabled={!this.props.instances}
/>
</InstanceSelect>
);
}
private renderInitialContent = () => {
return (
<MenuItem disabled={true} text={"Start typing"} />
);
}
private renderNoResults = () => {
return (
<MenuItem disabled={true} text={"Keep typing"} />
);
}
private itemRenderer = (item: IInstance, itemProps: IItemRendererProps) => {
if (!itemProps.modifiers.matchesPredicate) {
return null;
}
return (
<MenuItem
text={item.name}
key={item.name}
active={itemProps.modifiers.active}
onClick={itemProps.handleClick}
/>
);
}
private itemPredicate: ItemPredicate<IInstance> = (query, item, index) => {
if (!item.name || query.length < 4) {
return false;
}
return item.name.toLowerCase().indexOf(query.toLowerCase()) >= 0;
}
private onItemSelect = (item: IInstance, event?: React.SyntheticEvent<HTMLElement>) => {
this.props.selectAndLoadInstance(item.name);
}
}
const mapStateToProps = (state: IAppState) => ({
currentInstanceName: state.currentInstance.currentInstanceName,
instances: state.data.instances,
})
const mapDispatchToProps = (dispatch: Dispatch) => ({
selectAndLoadInstance: (instanceName: string) => dispatch(selectAndLoadInstance(instanceName) as any),
})
export const InstanceSearch = connect(mapStateToProps, mapDispatchToProps)(InstanceSearchImpl)