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ManagedTree.js
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168 lines (150 loc) · 4.36 KB
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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
// @flow
import React, { Component } from "react";
import "./ManagedTree.css";
const { Tree } = require("devtools-components");
export type Item = {
contents: any,
name: string,
path: string
};
type Props = {
autoExpandAll: boolean,
autoExpandDepth: number,
getChildren: Object => Object[],
getPath: (Object, index?: number) => string,
getParent: Item => any,
getRoots: () => any,
highlightItems?: Array<Item>,
itemHeight: number,
listItems?: Array<Item>,
onFocus?: (item: any) => void,
onExpand?: (item: any, expanded: Set<Item>) => void,
onCollapse?: (item: any, expanded: Set<Item>) => void,
renderItem: any,
disabledFocus?: boolean,
focused?: any,
expanded?: any
};
type State = {
expanded: any,
focusedItem: ?Item
};
class ManagedTree extends Component<Props, State> {
constructor(props: Props) {
super(props);
this.state = {
expanded: props.expanded || new Set(),
focusedItem: null
};
}
componentWillReceiveProps(nextProps: Props) {
const { listItems, highlightItems, focused } = this.props;
if (
nextProps.listItems &&
nextProps.listItems != listItems &&
nextProps.listItems.length
) {
this.expandListItems(nextProps.listItems);
}
if (
nextProps.highlightItems &&
nextProps.highlightItems != highlightItems &&
nextProps.highlightItems.length
) {
this.highlightItem(nextProps.highlightItems);
}
if (nextProps.focused && nextProps.focused !== focused) {
this.focusItem(nextProps.focused);
}
}
setExpanded = (
item: Item,
isExpanded: boolean,
shouldIncludeChildren: boolean
) => {
const expandItem = i => {
const path = this.props.getPath(i);
if (isExpanded) {
expanded.add(path);
} else {
expanded.delete(path);
}
};
const { expanded } = this.state;
expandItem(item);
if (shouldIncludeChildren) {
let parents = [item];
while (parents.length) {
const children = [];
for (const parent of parents) {
if (parent.contents && parent.contents.length) {
for (const child of parent.contents) {
expandItem(child);
children.push(child);
}
}
}
parents = children;
}
}
this.setState({ expanded });
if (isExpanded && this.props.onExpand) {
this.props.onExpand(item, expanded);
} else if (!isExpanded && this.props.onCollapse) {
this.props.onCollapse(item, expanded);
}
};
expandListItems(listItems: Array<Item>) {
const { expanded } = this.state;
listItems.forEach(item => expanded.add(this.props.getPath(item)));
this.focusItem(listItems[0]);
this.setState({ expanded });
}
highlightItem(highlightItems: Array<Item>) {
const { expanded } = this.state;
// This file is visible, so we highlight it.
if (expanded.has(this.props.getPath(highlightItems[0]))) {
this.focusItem(highlightItems[0]);
} else {
// Look at folders starting from the top-level until finds a
// closed folder and highlights this folder
const index = highlightItems
.reverse()
.findIndex(item => !expanded.has(this.props.getPath(item)));
this.focusItem(highlightItems[index]);
}
}
focusItem = (item: Item) => {
if (!this.props.disabledFocus && this.state.focusedItem !== item) {
this.setState({ focusedItem: item });
if (this.props.onFocus) {
this.props.onFocus(item);
}
}
};
render() {
const { expanded, focusedItem } = this.state;
return (
<div className="managed-tree">
<Tree
{...this.props}
isExpanded={item => expanded.has(this.props.getPath(item))}
focused={focusedItem}
getKey={this.props.getPath}
onExpand={item => this.setExpanded(item, true, false)}
onCollapse={item => this.setExpanded(item, false, false)}
onFocus={this.focusItem}
renderItem={(...args) =>
this.props.renderItem(...args, {
setExpanded: this.setExpanded
})
}
/>
</div>
);
}
}
export default ManagedTree;