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ColumnResizer.js
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ColumnResizer.js
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import React from 'react';
import PropTypes from 'prop-types';
import { noop, addClassName, removeClassName } from './utils';
const INVALID_VALUE = null;
// copied from https://github.com/mzabriskie/react-draggable/blob/master/lib/utils/domFns.js
export function addUserSelectStyles(doc) {
if (!doc) return;
let styleEl = doc.getElementById('react-draggable-style-el');
if (!styleEl) {
styleEl = doc.createElement('style');
styleEl.type = 'text/css';
styleEl.id = 'react-draggable-style-el';
styleEl.innerHTML = '.react-draggable-transparent-selection *::-moz-selection {background: transparent;}\n';
styleEl.innerHTML += '.react-draggable-transparent-selection *::selection {background: transparent;}\n';
doc.getElementsByTagName('head')[0].appendChild(styleEl);
}
if (doc.body) addClassName(doc.body, 'react-draggable-transparent-selection');
}
export function removeUserSelectStyles(doc) {
try {
if (doc && doc.body) removeClassName(doc.body, 'react-draggable-transparent-selection');
if (doc.selection) {
doc.selection.empty();
} else {
window.getSelection().removeAllRanges(); // remove selection caused by scroll
}
} catch (e) {
// probably IE
}
}
const eventsFor = {
touch: {
start: 'touchstart',
move: 'touchmove',
stop: 'touchend',
},
mouse: {
start: 'mousedown',
move: 'mousemove',
stop: 'mouseup',
},
};
let dragEventFor = eventsFor.mouse;
/**
* ColumnResizer for BaseTable
*/
class ColumnResizer extends React.PureComponent {
constructor(props) {
super(props);
this.isDragging = false;
this.lastX = INVALID_VALUE;
this.width = 0;
this._setHandleRef = this._setHandleRef.bind(this);
this._handleClick = this._handleClick.bind(this);
this._handleMouseDown = this._handleMouseDown.bind(this);
this._handleMouseUp = this._handleMouseUp.bind(this);
this._handleTouchStart = this._handleTouchStart.bind(this);
this._handleTouchEnd = this._handleTouchEnd.bind(this);
this._handleDragStart = this._handleDragStart.bind(this);
this._handleDragStop = this._handleDragStop.bind(this);
this._handleDrag = this._handleDrag.bind(this);
}
componentWillUnmount() {
if (this.handleRef) {
const { ownerDocument } = this.handleRef;
ownerDocument.removeEventListener(eventsFor.mouse.move, this._handleDrag);
ownerDocument.removeEventListener(eventsFor.mouse.stop, this._handleDragStop);
ownerDocument.removeEventListener(eventsFor.touch.move, this._handleDrag);
ownerDocument.removeEventListener(eventsFor.touch.stop, this._handleDragStop);
removeUserSelectStyles(ownerDocument);
}
}
render() {
const { style, column, onResizeStart, onResize, onResizeStop, minWidth, ...rest } = this.props;
return (
<div
{...rest}
ref={this._setHandleRef}
onClick={this._handleClick}
onMouseDown={this._handleMouseDown}
onMouseUp={this._handleMouseUp}
onTouchStart={this._handleTouchStart}
onTouchEnd={this._handleTouchEnd}
style={{
userSelect: 'none',
touchAction: 'none',
position: 'absolute',
top: 0,
bottom: 0,
right: 0,
cursor: 'col-resize',
...style,
}}
/>
);
}
_setHandleRef(ref) {
this.handleRef = ref;
}
_handleClick(e) {
e.stopPropagation();
}
_handleMouseDown(e) {
dragEventFor = eventsFor.mouse;
this._handleDragStart(e);
}
_handleMouseUp(e) {
dragEventFor = eventsFor.mouse;
this._handleDragStop(e);
}
_handleTouchStart(e) {
dragEventFor = eventsFor.touch;
this._handleDragStart(e);
}
_handleTouchEnd(e) {
dragEventFor = eventsFor.touch;
this._handleDragStop(e);
}
_handleDragStart(e) {
if (typeof e.button === 'number' && e.button !== 0) return;
this.isDragging = true;
this.lastX = INVALID_VALUE;
this.width = this.props.column.width;
this.props.onResizeStart(this.props.column);
const { ownerDocument } = this.handleRef;
addUserSelectStyles(ownerDocument);
ownerDocument.addEventListener(dragEventFor.move, this._handleDrag);
ownerDocument.addEventListener(dragEventFor.stop, this._handleDragStop);
}
_handleDragStop(e) {
if (!this.isDragging) return;
this.isDragging = false;
this.props.onResizeStop(this.props.column);
const { ownerDocument } = this.handleRef;
removeUserSelectStyles(ownerDocument);
ownerDocument.removeEventListener(dragEventFor.move, this._handleDrag);
ownerDocument.removeEventListener(dragEventFor.stop, this._handleDragStop);
}
_handleDrag(e) {
let clientX = e.clientX;
if (e.type === eventsFor.touch.move) {
e.preventDefault();
if (e.targetTouches && e.targetTouches[0]) clientX = e.targetTouches[0].clientX;
}
const { offsetParent } = this.handleRef;
const offsetParentRect = offsetParent.getBoundingClientRect();
const x = clientX + offsetParent.scrollLeft - offsetParentRect.left;
if (this.lastX === INVALID_VALUE) {
this.lastX = x;
return;
}
const { column, minWidth: MIN_WIDTH } = this.props;
const { width, maxWidth, minWidth = MIN_WIDTH } = column;
const movedX = x - this.lastX;
if (!movedX) return;
this.width = this.width + movedX;
this.lastX = x;
let newWidth = this.width;
if (maxWidth && newWidth > maxWidth) {
newWidth = maxWidth;
} else if (newWidth < minWidth) {
newWidth = minWidth;
}
if (newWidth === width) return;
this.props.onResize(column, newWidth);
}
}
ColumnResizer.defaultProps = {
onResizeStart: noop,
onResize: noop,
onResizeStop: noop,
minWidth: 30,
};
ColumnResizer.propTypes = {
/**
* Custom style for the drag handler
*/
style: PropTypes.object,
/**
* The column object to be dragged
*/
column: PropTypes.object,
/**
* A callback function when resizing started
* The callback is of the shape of `(column) => *`
*/
onResizeStart: PropTypes.func,
/**
* A callback function when resizing the column
* The callback is of the shape of `(column, width) => *`
*/
onResize: PropTypes.func,
/**
* A callback function when resizing stopped
* The callback is of the shape of `(column) => *`
*/
onResizeStop: PropTypes.func,
/**
* Minimum width of the column could be resized to if the column's `minWidth` is not set
*/
minWidth: PropTypes.number,
};
export default ColumnResizer;