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dropdown.ts
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dropdown.ts
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { IContextMenuProvider } from 'vs/base/browser/contextmenu';
import { $, addDisposableListener, append, EventHelper, EventType, isMouseEvent } from 'vs/base/browser/dom';
import { StandardKeyboardEvent } from 'vs/base/browser/keyboardEvent';
import { EventType as GestureEventType, Gesture } from 'vs/base/browser/touch';
import { AnchorAlignment } from 'vs/base/browser/ui/contextview/contextview';
import type { IManagedHover } from 'vs/base/browser/ui/hover/hover';
import { getBaseLayerHoverDelegate } from 'vs/base/browser/ui/hover/hoverDelegate2';
import { getDefaultHoverDelegate } from 'vs/base/browser/ui/hover/hoverDelegateFactory';
import { IMenuOptions } from 'vs/base/browser/ui/menu/menu';
import { ActionRunner, IAction } from 'vs/base/common/actions';
import { Emitter } from 'vs/base/common/event';
import { KeyCode } from 'vs/base/common/keyCodes';
import { IDisposable } from 'vs/base/common/lifecycle';
import 'vs/css!./dropdown';
export interface ILabelRenderer {
(container: HTMLElement): IDisposable | null;
}
interface IBaseDropdownOptions {
label?: string;
labelRenderer?: ILabelRenderer;
}
class BaseDropdown extends ActionRunner {
private _element: HTMLElement;
private boxContainer?: HTMLElement;
private _label?: HTMLElement;
private contents?: HTMLElement;
private visible: boolean | undefined;
private _onDidChangeVisibility = this._register(new Emitter<boolean>());
readonly onDidChangeVisibility = this._onDidChangeVisibility.event;
private hover: IManagedHover | undefined;
constructor(container: HTMLElement, options: IBaseDropdownOptions) {
super();
this._element = append(container, $('.monaco-dropdown'));
this._label = append(this._element, $('.dropdown-label'));
let labelRenderer = options.labelRenderer;
if (!labelRenderer) {
labelRenderer = (container: HTMLElement): IDisposable | null => {
container.textContent = options.label || '';
return null;
};
}
for (const event of [EventType.CLICK, EventType.MOUSE_DOWN, GestureEventType.Tap]) {
this._register(addDisposableListener(this.element, event, e => EventHelper.stop(e, true))); // prevent default click behaviour to trigger
}
for (const event of [EventType.MOUSE_DOWN, GestureEventType.Tap]) {
this._register(addDisposableListener(this._label, event, e => {
if (isMouseEvent(e) && (e.detail > 1 || e.button !== 0)) {
// prevent right click trigger to allow separate context menu (https://github.com/microsoft/vscode/issues/151064)
// prevent multiple clicks to open multiple context menus (https://github.com/microsoft/vscode/issues/41363)
return;
}
if (this.visible) {
this.hide();
} else {
this.show();
}
}));
}
this._register(addDisposableListener(this._label, EventType.KEY_UP, e => {
const event = new StandardKeyboardEvent(e);
if (event.equals(KeyCode.Enter) || event.equals(KeyCode.Space)) {
EventHelper.stop(e, true); // https://github.com/microsoft/vscode/issues/57997
if (this.visible) {
this.hide();
} else {
this.show();
}
}
}));
const cleanupFn = labelRenderer(this._label);
if (cleanupFn) {
this._register(cleanupFn);
}
this._register(Gesture.addTarget(this._label));
}
get element(): HTMLElement {
return this._element;
}
get label() {
return this._label;
}
set tooltip(tooltip: string) {
if (this._label) {
if (!this.hover && tooltip !== '') {
this.hover = this._register(getBaseLayerHoverDelegate().setupManagedHover(getDefaultHoverDelegate('mouse'), this._label, tooltip));
} else if (this.hover) {
this.hover.update(tooltip);
}
}
}
show(): void {
if (!this.visible) {
this.visible = true;
this._onDidChangeVisibility.fire(true);
}
}
hide(): void {
if (this.visible) {
this.visible = false;
this._onDidChangeVisibility.fire(false);
}
}
isVisible(): boolean {
return !!this.visible;
}
protected onEvent(_e: Event, activeElement: HTMLElement): void {
this.hide();
}
override dispose(): void {
super.dispose();
this.hide();
if (this.boxContainer) {
this.boxContainer.remove();
this.boxContainer = undefined;
}
if (this.contents) {
this.contents.remove();
this.contents = undefined;
}
if (this._label) {
this._label.remove();
this._label = undefined;
}
}
}
export interface IActionProvider {
getActions(): readonly IAction[];
}
export interface IDropdownMenuOptions extends IBaseDropdownOptions {
contextMenuProvider: IContextMenuProvider;
readonly actions?: IAction[];
readonly actionProvider?: IActionProvider;
menuClassName?: string;
menuAsChild?: boolean; // scope down for #99448
readonly skipTelemetry?: boolean;
}
export class DropdownMenu extends BaseDropdown {
private _menuOptions: IMenuOptions | undefined;
private _actions: readonly IAction[] = [];
constructor(container: HTMLElement, private readonly _options: IDropdownMenuOptions) {
super(container, _options);
this.actions = _options.actions || [];
}
set menuOptions(options: IMenuOptions | undefined) {
this._menuOptions = options;
}
get menuOptions(): IMenuOptions | undefined {
return this._menuOptions;
}
private get actions(): readonly IAction[] {
if (this._options.actionProvider) {
return this._options.actionProvider.getActions();
}
return this._actions;
}
private set actions(actions: readonly IAction[]) {
this._actions = actions;
}
override show(): void {
super.show();
this.element.classList.add('active');
this._options.contextMenuProvider.showContextMenu({
getAnchor: () => this.element,
getActions: () => this.actions,
getActionsContext: () => this.menuOptions ? this.menuOptions.context : null,
getActionViewItem: (action, options) => this.menuOptions && this.menuOptions.actionViewItemProvider ? this.menuOptions.actionViewItemProvider(action, options) : undefined,
getKeyBinding: action => this.menuOptions && this.menuOptions.getKeyBinding ? this.menuOptions.getKeyBinding(action) : undefined,
getMenuClassName: () => this._options.menuClassName || '',
onHide: () => this.onHide(),
actionRunner: this.menuOptions ? this.menuOptions.actionRunner : undefined,
anchorAlignment: this.menuOptions ? this.menuOptions.anchorAlignment : AnchorAlignment.LEFT,
domForShadowRoot: this._options.menuAsChild ? this.element : undefined,
skipTelemetry: this._options.skipTelemetry
});
}
override hide(): void {
super.hide();
}
private onHide(): void {
this.hide();
this.element.classList.remove('active');
}
}