129 lines
4.1 KiB
JavaScript
129 lines
4.1 KiB
JavaScript
import React, {Component} from 'react';
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import { StyleSheet, css } from 'aphrodite/no-important';
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import PropTypes from 'prop-types';
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import Images from '../styles/images';
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import {PART_SEGMENT_LENGTH} from '../config';
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export default class PartSelector extends Component {
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static selectorWidth = 150;
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static propTypes = {
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onPartChange: PropTypes.func.isRequired,
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partsCount: PropTypes.number.isRequired,
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};
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constructor(props) {
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super(props);
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this.state = {
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selectedPartStyle: this.makePartStyle(props.partsCount, 0),
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selectedPart: 0,
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isDragging: false,
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};
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this.selectNextPart = this.selectNextPart.bind(this);
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this.selectPrevPart = this.selectPrevPart.bind(this);
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this.onSelectedPartDragStart = this.onSelectedPartDragStart.bind(this);
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this.onSelectedPartMouseMove = this.onSelectedPartMouseMove.bind(this);
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this.onSelectedPartDragEnd = this.onSelectedPartDragEnd.bind(this);
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this.onClick = this.onClick.bind(this);
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}
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makePartStyle(partsCount, selectedPart) {
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return StyleSheet.create({
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selectedPart: {
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left: (selectedPart / partsCount) * PartSelector.selectorWidth,
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width: (PART_SEGMENT_LENGTH / partsCount) * PartSelector.selectorWidth
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}
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});
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}
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componentWillReceiveProps(nextProps) {
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if(nextProps.partsCount != this.props.partsCount) {
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const selectedPartStyle = this.makePartStyle(nextProps.partsCount, this.state.selectedPart);
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this.setState({selectedPartStyle});
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}
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}
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selectPart(part) {
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if(part + PART_SEGMENT_LENGTH - 1 >= this.props.partsCount) {
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return;
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}
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if(part === this.state.selectedPart){
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return;
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}
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this.props.onPartChange(part);
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this.setState({selectedPart: part,
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selectedPartStyle: this.makePartStyle(this.props.partsCount,
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part)});
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}
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selectNextPart() {
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let {selectedPart} = this.state;
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selectedPart++;
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if(selectedPart + PART_SEGMENT_LENGTH >= this.props.partsCount) {
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return;
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}
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this.selectPart(selectedPart);
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}
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selectPrevPart() {
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let {selectedPart} = this.state;
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selectedPart--;
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if(selectedPart < 0) {
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return;
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}
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this.selectPart(selectedPart);
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}
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partAtClientX(clientX) {
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const rect = this.selectorRect.getBoundingClientRect();
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const x = clientX - rect.left;
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return Math.floor(x * this.props.partsCount / PartSelector.selectorWidth);
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}
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onSelectedPartDragStart(e) {
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this.setState({isDragging: true});
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document.addEventListener('mouseup', this.onSelectedPartDragEnd);
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}
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onSelectedPartMouseMove(e) {
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if(!this.state.isDragging) return;
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const part = this.partAtClientX(e.clientX);
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this.selectPart(part);
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}
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onSelectedPartDragEnd(e) {
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this.setState({isDragging: false});
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document.removeEventListener('mouseup', this.onSelectedPartDragEnd);
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}
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onClick(e) {
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const part = this.partAtClientX(e.clientX);
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this.selectPart(part);
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}
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render() {
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const {selectedPartStyle} = this.state;
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return (
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<div className='cabana-explorer-part-selector'>
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<div className='cabana-explorer-part-selector-track'
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ref={ (selector) => this.selectorRect = selector }
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style={{ width: PartSelector.selectorWidth }}
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onMouseMove={ this.onSelectedPartMouseMove }
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onClick={ this.onClick }>
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<div className='cabana-explorer-part-selector-track-active'
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style={ selectedPartStyle.selectedPart._definition }
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onMouseDown={ this.onSelectedPartDragStart }
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onMouseUp={ this.onSelectedPartDragEnd }>
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</div>
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</div>
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</div>
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)
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}
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}
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