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fix #4088: Add 'Upload Files...' menu entries
Signed-off-by: Anton Kosyakov <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| /******************************************************************************** | ||
| * Copyright (C) 2019 TypeFox and others. | ||
| * | ||
| * This program and the accompanying materials are made available under the | ||
| * terms of the Eclipse Public License v. 2.0 which is available at | ||
| * http://www.eclipse.org/legal/epl-2.0. | ||
| * | ||
| * This Source Code may also be made available under the following Secondary | ||
| * Licenses when the conditions for such availability set forth in the Eclipse | ||
| * Public License v. 2.0 are satisfied: GNU General Public License, version 2 | ||
| * with the GNU Classpath Exception which is available at | ||
| * https://www.gnu.org/software/classpath/license.html. | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0 | ||
| ********************************************************************************/ | ||
|
|
||
| // tslint:disable:no-any | ||
| import { CommandHandler } from './command'; | ||
| import { SelectionService } from '../common/selection-service'; | ||
|
|
||
| export class SelectionCommandHandler<S> implements CommandHandler { | ||
|
|
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| constructor( | ||
| protected readonly selectionService: SelectionService, | ||
| protected readonly toSelection: (arg: any) => S | undefined, | ||
| protected readonly options: SelectionCommandHandler.Options<S> | ||
| ) { } | ||
|
|
||
| execute(...args: any[]): Object | undefined { | ||
| const selection = this.getSelection(...args); | ||
| return selection ? (this.options.execute as any)(selection, ...args) : undefined; | ||
| } | ||
|
|
||
| isVisible(...args: any[]): boolean { | ||
| const selection = this.getSelection(...args); | ||
| return !!selection && (!this.options.isVisible || (this.options.isVisible as any)(selection as any, ...args)); | ||
| } | ||
|
|
||
| isEnabled(...args: any[]): boolean { | ||
| const selection = this.getSelection(...args); | ||
| return !!selection && (!this.options.isEnabled || (this.options.isEnabled as any)(selection as any, ...args)); | ||
| } | ||
|
|
||
| protected isMulti(): boolean { | ||
| return this.options && !!this.options.multi; | ||
| } | ||
|
|
||
| protected getSelection(...args: any[]): S | S[] | undefined { | ||
| const givenSelection = args.length && this.toSelection(args[0]); | ||
| if (givenSelection) { | ||
| return this.isMulti() ? [givenSelection] : givenSelection; | ||
| } | ||
| const globalSelection = this.getSingleSelection(this.selectionService.selection); | ||
| if (this.isMulti()) { | ||
| return this.getMulitSelection(globalSelection); | ||
| } | ||
| return this.getSingleSelection(globalSelection); | ||
| } | ||
|
|
||
| protected getSingleSelection(arg: Object | undefined): S | undefined { | ||
| let selection = this.toSelection(arg); | ||
| if (selection) { | ||
| return selection; | ||
| } | ||
| if (Array.isArray(arg)) { | ||
| for (const element of arg) { | ||
| selection = this.toSelection(element); | ||
| if (selection) { | ||
| return selection; | ||
| } | ||
| } | ||
| } | ||
| return undefined; | ||
| } | ||
|
|
||
| protected getMulitSelection(arg: Object | undefined): S[] | undefined { | ||
| let selection = this.toSelection(arg); | ||
| if (selection) { | ||
| return [selection]; | ||
| } | ||
| const result = []; | ||
| if (Array.isArray(arg)) { | ||
| for (const element of arg) { | ||
| selection = this.toSelection(element); | ||
| if (selection) { | ||
| result.push(selection); | ||
| } | ||
| } | ||
| } | ||
| return result.length ? result : undefined; | ||
| } | ||
| } | ||
| export namespace SelectionCommandHandler { | ||
| export type Options<S> = SelectionOptions<false, S> | SelectionOptions<true, S[]>; | ||
| export interface SelectionOptions<Multi extends boolean, T> { | ||
| multi: Multi; | ||
| execute(selection: T, ...args: any[]): any; | ||
| isEnabled?(selection: T, ...args: any[]): boolean; | ||
| isVisible?(selection: T, ...args: any[]): boolean; | ||
| } | ||
| } |
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