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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, EventType } from 'vs/base/browser/dom';
import { StandardKeyboardEvent } from 'vs/base/browser/keyboardEvent';
import { IActionViewItemProvider } from 'vs/base/browser/ui/actionbar/actionbar';
import { ActionViewItem, BaseActionViewItem, IActionViewItemOptions, IBaseActionViewItemOptions } from 'vs/base/browser/ui/actionbar/actionViewItems';
import { AnchorAlignment } from 'vs/base/browser/ui/contextview/contextview';
import { DropdownMenu, IActionProvider, IDropdownMenuOptions, ILabelRenderer } from 'vs/base/browser/ui/dropdown/dropdown';
import { Action, IAction, IActionRunner } from 'vs/base/common/actions';
import { Codicon } from 'vs/base/common/codicons';
import { Emitter } from 'vs/base/common/event';
import { KeyCode } from 'vs/base/common/keyCodes';
import { ResolvedKeybinding } from 'vs/base/common/keybindings';
import { IDisposable } from 'vs/base/common/lifecycle';
import 'vs/css!./dropdown';
export interface IKeybindingProvider {
(action: IAction): ResolvedKeybinding | undefined;
}
export interface IAnchorAlignmentProvider {
(): AnchorAlignment;
}
export interface IDropdownMenuActionViewItemOptions extends IBaseActionViewItemOptions {
readonly actionViewItemProvider?: IActionViewItemProvider;
readonly keybindingProvider?: IKeybindingProvider;
readonly actionRunner?: IActionRunner;
readonly classNames?: string[] | string;
readonly anchorAlignmentProvider?: IAnchorAlignmentProvider;
readonly menuAsChild?: boolean;
}
export class DropdownMenuActionViewItem extends BaseActionViewItem {
private menuActionsOrProvider: readonly IAction[] | IActionProvider;
private dropdownMenu: DropdownMenu | undefined;
private contextMenuProvider: IContextMenuProvider;
private actionItem: HTMLElement | null = null;
private _onDidChangeVisibility = this._register(new Emitter<boolean>());
readonly onDidChangeVisibility = this._onDidChangeVisibility.event;
protected override readonly options: IDropdownMenuActionViewItemOptions;
constructor(
action: IAction,
menuActionsOrProvider: readonly IAction[] | IActionProvider,
contextMenuProvider: IContextMenuProvider,
options: IDropdownMenuActionViewItemOptions = Object.create(null)
) {
super(null, action, options);
this.menuActionsOrProvider = menuActionsOrProvider;
this.contextMenuProvider = contextMenuProvider;
this.options = options;
if (this.options.actionRunner) {
this.actionRunner = this.options.actionRunner;
}
}
override render(container: HTMLElement): void {
this.actionItem = container;
const labelRenderer: ILabelRenderer = (el: HTMLElement): IDisposable | null => {
this.element = append(el, $('a.action-label'));
let classNames: string[] = [];
if (typeof this.options.classNames === 'string') {
classNames = this.options.classNames.split(/\s+/g).filter(s => !!s);
} else if (this.options.classNames) {
classNames = this.options.classNames;
}
// todo@aeschli: remove codicon, should come through `this.options.classNames`
if (!classNames.find(c => c === 'icon')) {
classNames.push('codicon');
}
this.element.classList.add(...classNames);
this.element.setAttribute('role', 'button');
this.element.setAttribute('aria-haspopup', 'true');
this.element.setAttribute('aria-expanded', 'false');
this.element.title = this._action.label || '';
return null;
};
const isActionsArray = Array.isArray(this.menuActionsOrProvider);
const options: IDropdownMenuOptions = {
contextMenuProvider: this.contextMenuProvider,
labelRenderer: labelRenderer,
menuAsChild: this.options.menuAsChild,
actions: isActionsArray ? this.menuActionsOrProvider as IAction[] : undefined,
actionProvider: isActionsArray ? undefined : this.menuActionsOrProvider as IActionProvider
};
this.dropdownMenu = this._register(new DropdownMenu(container, options));
this._register(this.dropdownMenu.onDidChangeVisibility(visible => {
this.element?.setAttribute('aria-expanded', `${visible}`);
this._onDidChangeVisibility.fire(visible);
}));
this.dropdownMenu.menuOptions = {
actionViewItemProvider: this.options.actionViewItemProvider,
actionRunner: this.actionRunner,
getKeyBinding: this.options.keybindingProvider,
context: this._context
};
if (this.options.anchorAlignmentProvider) {
const that = this;
this.dropdownMenu.menuOptions = {
...this.dropdownMenu.menuOptions,
get anchorAlignment(): AnchorAlignment {
return that.options.anchorAlignmentProvider!();
}
};
}
this.updateEnabled();
}
override setActionContext(newContext: unknown): void {
super.setActionContext(newContext);
if (this.dropdownMenu) {
if (this.dropdownMenu.menuOptions) {
this.dropdownMenu.menuOptions.context = newContext;
} else {
this.dropdownMenu.menuOptions = { context: newContext };
}
}
}
show(): void {
if (this.dropdownMenu) {
this.dropdownMenu.show();
}
}
protected override updateEnabled(): void {
const disabled = !this.getAction().enabled;
this.actionItem?.classList.toggle('disabled', disabled);
this.element?.classList.toggle('disabled', disabled);
}
}
export interface IActionWithDropdownActionViewItemOptions extends IActionViewItemOptions {
readonly menuActionsOrProvider: readonly IAction[] | IActionProvider;
readonly menuActionClassNames?: string[];
}
export class ActionWithDropdownActionViewItem extends ActionViewItem {
protected dropdownMenuActionViewItem: DropdownMenuActionViewItem | undefined;
constructor(
context: unknown,
action: IAction,
options: IActionWithDropdownActionViewItemOptions,
private readonly contextMenuProvider: IContextMenuProvider
) {
super(context, action, options);
}
override render(container: HTMLElement): void {
super.render(container);
if (this.element) {
this.element.classList.add('action-dropdown-item');
const menuActionsProvider = {
getActions: () => {
const actionsProvider = (<IActionWithDropdownActionViewItemOptions>this.options).menuActionsOrProvider;
return Array.isArray(actionsProvider) ? actionsProvider : (actionsProvider as IActionProvider).getActions(); // TODO: microsoft/TypeScript#42768
}
};
this.dropdownMenuActionViewItem = new DropdownMenuActionViewItem(this._register(new Action('dropdownAction', undefined)), menuActionsProvider, this.contextMenuProvider, { classNames: ['dropdown', ...Codicon.dropDownButton.classNamesArray, ...(<IActionWithDropdownActionViewItemOptions>this.options).menuActionClassNames || []] });
this.dropdownMenuActionViewItem.render(this.element);
this._register(addDisposableListener(this.element, EventType.KEY_DOWN, e => {
const event = new StandardKeyboardEvent(e);
let handled: boolean = false;
if (this.dropdownMenuActionViewItem?.isFocused() && event.equals(KeyCode.LeftArrow)) {
handled = true;
this.dropdownMenuActionViewItem?.blur();
this.focus();
} else if (this.isFocused() && event.equals(KeyCode.RightArrow)) {
handled = true;
this.blur();
this.dropdownMenuActionViewItem?.focus();
}
if (handled) {
event.preventDefault();
event.stopPropagation();
}
}));
}
}
override blur(): void {
super.blur();
this.dropdownMenuActionViewItem?.blur();
}
override setFocusable(focusable: boolean): void {
super.setFocusable(focusable);
this.dropdownMenuActionViewItem?.setFocusable(focusable);
}
}
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