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@blueprintjs/core

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/* * 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 * as tslib_1 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 { safeInvoke } from "../../common/utils"; import { Popover } from "../popover/popover"; const POPPER_MODIFIERS = { preventOverflow: { boundariesElement: "viewport" }, }; const TRANSITION_DURATION = 100; /* istanbul ignore next */ let ContextMenu = class ContextMenu extends AbstractPureComponent2 { /* istanbul ignore next */ constructor() { super(...arguments); this.state = { isDarkTheme: false, isOpen: false, menu: null, offset: null, }; 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); newTarget.dispatchEvent(new MouseEvent("contextmenu", e)); }, TRANSITION_DURATION); }; this.handlePopoverInteraction = (nextOpenState) => { if (!nextOpenState) { // delay the actual hiding till the event queue clears // to avoid flicker of opening twice 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 == null ? "" : `${this.state.offset.left}x${this.state.offset.top}`; // wrap the popover in a positioned div to make sure it is properly // offset on the screen. 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 })))); } show(menu, offset, onClose, isDarkTheme) { this.setState({ isOpen: true, menu, offset, onClose, isDarkTheme }); } hide() { safeInvoke(this.state.onClose); this.setState({ isOpen: false, onClose: undefined }); } }; ContextMenu = tslib_1.__decorate([ polyfill ], ContextMenu); let contextMenuElement; 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 == null) { contextMenuElement = document.createElement("div"); contextMenuElement.classList.add(Classes.CONTEXT_MENU); document.body.appendChild(contextMenuElement); contextMenu = ReactDOM.render(React.createElement(ContextMenu, { onClosed: remove }), contextMenuElement); } contextMenu.show(menu, offset, onClose, isDarkTheme); } /** Hide the open context menu. */ export function hide() { if (contextMenu != null) { 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 = null; contextMenu = null; } } //# sourceMappingURL=contextMenu.js.map