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Reset splits either side of a divider to an even ratio on double click of the divider #2687 (#2692)

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* auto resize panes when dbl click on separator is triggered

* use const instead of let
This commit is contained in:
Lescenco Andrei Bogdan 2018-02-23 13:31:18 +01:00 committed by Timothy
parent 6b9a4f6ff0
commit 82c7afbeec
1 changed files with 33 additions and 6 deletions
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39
lib/components/split-pane.js
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@ -1,11 +1,13 @@
/* eslint-disable quote-props */
import React from 'react';
import {PureComponent} from '../base-components';
import _ from 'lodash';
export default class SplitPane extends PureComponent {
constructor(props) {
super(props);
this.handleDragStart = this.handleDragStart.bind(this);
this.handleAutoResize = this.handleAutoResize.bind(this);
this.onDrag = this.onDrag.bind(this);
this.onDragEnd = this.onDragEnd.bind(this);
this.state = {dragging: false};
@ -18,6 +20,28 @@ export default class SplitPane extends PureComponent {
}
}
setupPanes(ev) {
this.panes = Array.from(ev.target.parentNode.childNodes);
this.paneIndex = this.panes.indexOf(ev.target);
this.paneIndex -= Math.ceil(this.paneIndex / 2);
}
handleAutoResize(ev) {
ev.preventDefault();
this.setupPanes(ev);
const sizes_ = this.getSizes();
sizes_[this.paneIndex] = 0;
sizes_[this.paneIndex + 1] = 0;
const availableWidth = 1 - _.sum(sizes_);
sizes_[this.paneIndex] = availableWidth / 2;
sizes_[this.paneIndex + 1] = availableWidth / 2;
this.props.onResize(sizes_);
}
handleDragStart(ev) {
ev.preventDefault();
this.setState({dragging: true});
@ -37,14 +61,12 @@ export default class SplitPane extends PureComponent {
this.dragTarget = ev.target;
this.dragPanePosition = this.dragTarget.getBoundingClientRect()[this.d2];
this.panes = Array.from(ev.target.parentNode.childNodes);
this.panesSize = ev.target.parentNode.getBoundingClientRect()[this.d1];
this.paneIndex = this.panes.indexOf(ev.target);
this.paneIndex -= Math.ceil(this.paneIndex / 2);
this.setupPanes(ev);
}
onDrag(ev) {
let {sizes} = this.props;
getSizes() {
const {sizes} = this.props;
let sizes_;
if (sizes) {
@ -53,9 +75,13 @@ export default class SplitPane extends PureComponent {
const total = this.props.children.length;
const count = new Array(total).fill(1 / total);
sizes = count;
sizes_ = count;
}
return sizes_;
}
onDrag(ev) {
const sizes_ = this.getSizes();
const i = this.paneIndex;
const pos = ev[this.d3];
@ -106,6 +132,7 @@ export default class SplitPane extends PureComponent {
<div
key="divider"
onMouseDown={this.handleDragStart}
onDoubleClick={this.handleAutoResize}
style={{backgroundColor: borderColor}}
className={css('divider', `divider_${direction}`)}
/>