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import { h, Component } from 'preact'
import { connect } from 'react-redux'
import { bindActionCreators } from 'redux'
import * as liveActions from '../live/actions'
const SLIDER_THROTTLE_TIME = 100
class Slider extends Component {
constructor(props){
super(props)
this.timeout = 0
this.state = {
value: props.opt[props.name]
}
this.handleInput = this.handleInput.bind(this)
this.handleRange = this.handleRange.bind(this)
}
componentWillReceiveProps(nextProps) {
const next_value = nextProps.value || nextProps.opt[nextProps.name]
if (next_value !== this.state.value) {
this.setState({ value: next_value });
}
}
handleInput(e){
let { name, opt } = this.props
let old_value = opt[name]
let new_value = e.target.value
if (this.props.type === 'int') {
new_value = parseInt(new_value)
}
if (this.props.type === 'odd') {
new_value = parseInt(Math.floor(new_value / 2) * 2 + 1)
}
if (old_value !== new_value) {
this.setState({ value: new_value })
this.props.actions.set_param(this.props.name, new_value)
this.props.onChange && this.props.onChange(new_value)
}
clearTimeout(this.timeout)
}
handleRange(e){
clearTimeout(this.timeout)
let new_value = e.target.value
if (this.props.type === 'int') {
new_value = parseInt(new_value)
}
if (this.props.type === 'odd') {
new_value = parseInt(Math.floor(new_value / 2) * 2 + 1)
}
this.setState({ value: new_value })
this.timeout = setTimeout(() => {
this.props.actions.set_param(this.props.name, new_value)
this.props.onChange && this.props.onChange(new_value)
}, SLIDER_THROTTLE_TIME)
}
render(){
let { name, title } = this.props
let value = this.state.value
if (typeof value === 'undefined') {
value = this.props.min
}
let text_value = value
let step;
if (this.props.type === 'int') {
step = 1
} else {
step = (this.props.max - this.props.min) / 100
text_value = parseFloat(value).toFixed(2)
}
return (
<div class='slider param'>
<label>
<span>{title || name.replace(/_/g, ' ')}</span>
<input type='text' value={text_value} onBlur={this.handleInput} />
</label>
<input
type='range'
min={this.props.min}
max={this.props.max}
step={step}
value={value}
onInput={this.handleRange}
/>
</div>
)
}
}
const mapStateToProps = state => ({
opt: state.live.opt,
})
const mapDispatchToProps = (dispatch, ownProps) => ({
actions: bindActionCreators(liveActions, dispatch)
})
export default connect(mapStateToProps, mapDispatchToProps)(Slider)
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