@blueprintjs/core
Version:
Core styles & components
122 lines • 5.92 kB
JavaScript
/*
* Copyright 2016 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 { __decorate } from "tslib";
import classNames from "classnames";
import * as React from "react";
import * as ReactDOM from "react-dom";
import { polyfill } from "react-lifecycles-compat";
import { AbstractPureComponent2, Classes, Position } from "../../common";
import { Popover } from "../popover/popover";
const POPPER_MODIFIERS = {
preventOverflow: { boundariesElement: "viewport" },
};
const TRANSITION_DURATION = 100;
/* istanbul ignore next */
/** @deprecated use ContextMenu2 */
let ContextMenu = class ContextMenu extends AbstractPureComponent2 {
constructor() {
super(...arguments);
this.state = {
isDarkTheme: false,
isOpen: false,
};
this.cancelContextMenu = (e) => e.preventDefault();
this.handleBackdropContextMenu = (e) => {
// React function to remove from the event pool, useful when using a event within a callback
e.persist();
e.preventDefault();
// wait for backdrop to disappear so we can find the "real" element at event coordinates.
// timeout duration is equivalent to transition duration so we know it's animated out.
this.setTimeout(() => {
// retrigger context menu event at the element beneath the backdrop.
// if it has a `contextmenu` event handler then it'll be invoked.
// if it doesn't, no native menu will show (at least on OSX) :(
const newTarget = document.elementFromPoint(e.clientX, e.clientY);
const { view, ...newEventInit } = e;
newTarget?.dispatchEvent(new MouseEvent("contextmenu", newEventInit));
}, TRANSITION_DURATION);
};
this.handlePopoverInteraction = (nextOpenState) => {
if (!nextOpenState) {
// delay the actual hiding till the event queue clears
// to avoid flicker of opening twice
this.requestAnimationFrame(() => this.hide());
}
};
}
render() {
// prevent right-clicking in a context menu
const content = React.createElement("div", { onContextMenu: this.cancelContextMenu }, this.state.menu);
const popoverClassName = classNames({ [Classes.DARK]: this.state.isDarkTheme });
// HACKHACK: workaround until we have access to Popper#scheduleUpdate().
// https://github.com/palantir/blueprint/issues/692
// Generate key based on offset so a new Popover instance is created
// when offset changes, to force recomputing position.
const key = this.state.offset === undefined ? "" : `${this.state.offset.left}x${this.state.offset.top}`;
// wrap the popover in a positioned div to make sure it is properly
// offset on the screen.
/* eslint-disable deprecation/deprecation */
return (React.createElement("div", { className: Classes.CONTEXT_MENU_POPOVER_TARGET, style: this.state.offset },
React.createElement(Popover, Object.assign({}, this.props, { backdropProps: { onContextMenu: this.handleBackdropContextMenu }, content: content, enforceFocus: false, key: key, hasBackdrop: true, isOpen: this.state.isOpen, minimal: true, modifiers: POPPER_MODIFIERS, onInteraction: this.handlePopoverInteraction, position: Position.RIGHT_TOP, popoverClassName: popoverClassName, target: React.createElement("div", null), transitionDuration: TRANSITION_DURATION }))));
/* eslint-enable deprecation/deprecation */
}
show(menu, offset, onClose, isDarkTheme = false) {
this.setState({ isOpen: true, menu, offset, onClose, isDarkTheme });
}
hide() {
this.state.onClose?.();
this.setState({ isOpen: false, onClose: undefined });
}
};
ContextMenu = __decorate([
polyfill
], ContextMenu);
let contextMenuElement;
// eslint-disable-next-line deprecation/deprecation
let contextMenu;
/**
* Show the given menu element at the given offset from the top-left corner of the viewport.
* The menu will appear below-right of this point and will flip to below-left if there is not enough
* room onscreen. The optional callback will be invoked when this menu closes.
*/
export function show(menu, offset, onClose, isDarkTheme) {
if (contextMenuElement === undefined) {
contextMenuElement = document.createElement("div");
contextMenuElement.classList.add(Classes.CONTEXT_MENU);
document.body.appendChild(contextMenuElement);
/* eslint-disable deprecation/deprecation */
contextMenu = ReactDOM.render(React.createElement(ContextMenu, { onClosed: remove }), contextMenuElement);
/* eslint-enable deprecation/deprecation */
}
contextMenu.show(menu, offset, onClose, isDarkTheme);
}
/** Hide the open context menu. */
export function hide() {
contextMenu?.hide();
}
/** Return whether a context menu is currently open. */
export function isOpen() {
return contextMenu != null && contextMenu.state.isOpen;
}
function remove() {
if (contextMenuElement != null) {
ReactDOM.unmountComponentAtNode(contextMenuElement);
contextMenuElement.remove();
contextMenuElement = undefined;
contextMenu = undefined;
}
}
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