@blueprintjs/core
Version:
Core styles & components
99 lines • 4.5 kB
JavaScript
/*
* Copyright 2015 Palantir Technologies, Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import classNames from "classnames";
import * as React from "react";
import { ChevronRight } from "@blueprintjs/icons";
import { Classes, DISPLAYNAME_PREFIX } from "../../common";
import { Collapse } from "../collapse/collapse";
import { Icon } from "../icon/icon";
/**
* Tree node component.
*
* @see https://blueprintjs.com/docs/#core/components/tree.tree-node
*/
// eslint-disable-next-line @typescript-eslint/ban-types
export class TreeNode extends React.Component {
static displayName = `${DISPLAYNAME_PREFIX}.TreeNode`;
/** @deprecated no longer necessary now that the TypeScript parser supports type arguments on JSX element tags */
static ofType() {
return TreeNode;
}
render() {
const { children, className, disabled, icon, isExpanded, isSelected, label } = this.props;
const classes = classNames(Classes.TREE_NODE, {
[Classes.DISABLED]: disabled,
[Classes.TREE_NODE_SELECTED]: isSelected,
[Classes.TREE_NODE_EXPANDED]: isExpanded,
}, className);
const contentClasses = classNames(Classes.TREE_NODE_CONTENT, `${Classes.TREE_NODE_CONTENT}-${this.props.depth}`);
const eventHandlers = disabled === true
? {}
: {
onClick: this.handleClick,
onContextMenu: this.handleContextMenu,
onDoubleClick: this.handleDoubleClick,
onMouseEnter: this.handleMouseEnter,
onMouseLeave: this.handleMouseLeave,
};
return (React.createElement("li", { className: classes },
React.createElement("div", { className: contentClasses, ref: this.handleContentRef, ...eventHandlers },
this.maybeRenderCaret(),
React.createElement(Icon, { className: Classes.TREE_NODE_ICON, icon: icon, "aria-hidden": true, tabIndex: -1 }),
React.createElement("span", { className: Classes.TREE_NODE_LABEL }, label),
this.maybeRenderSecondaryLabel()),
React.createElement(Collapse, { isOpen: isExpanded }, children)));
}
maybeRenderCaret() {
const { children, isExpanded, disabled, hasCaret = React.Children.count(children) > 0 } = this.props;
if (hasCaret) {
const caretClasses = classNames(Classes.TREE_NODE_CARET, isExpanded ? Classes.TREE_NODE_CARET_OPEN : Classes.TREE_NODE_CARET_CLOSED);
return (React.createElement(ChevronRight, { title: isExpanded ? "Collapse group" : "Expand group", className: caretClasses, onClick: disabled === true ? undefined : this.handleCaretClick }));
}
return React.createElement("span", { className: Classes.TREE_NODE_CARET_NONE });
}
maybeRenderSecondaryLabel() {
if (this.props.secondaryLabel != null) {
return React.createElement("span", { className: Classes.TREE_NODE_SECONDARY_LABEL }, this.props.secondaryLabel);
}
else {
return undefined;
}
}
handleCaretClick = (e) => {
e.stopPropagation();
const { isExpanded, onCollapse, onExpand } = this.props;
(isExpanded ? onCollapse : onExpand)?.(this.props, this.props.path, e);
};
handleClick = (e) => {
this.props.onClick?.(this.props, this.props.path, e);
};
handleContentRef = (element) => {
this.props.contentRef?.(this.props, element);
};
handleContextMenu = (e) => {
this.props.onContextMenu?.(this.props, this.props.path, e);
};
handleDoubleClick = (e) => {
this.props.onDoubleClick?.(this.props, this.props.path, e);
};
handleMouseEnter = (e) => {
this.props.onMouseEnter?.(this.props, this.props.path, e);
};
handleMouseLeave = (e) => {
this.props.onMouseLeave?.(this.props, this.props.path, e);
};
}
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