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| /******************************************************************************** | ||
| * Copyright (c) 2024 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 | ||
| ********************************************************************************/ | ||
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| import { inject, injectable, multiInject, optional } from "inversify"; | ||
| import { VNode } from "snabbdom"; | ||
| import { Action, isAction } from "sprotty-protocol/lib/actions"; | ||
| import { IActionDispatcher } from "../actions/action-dispatcher"; | ||
| import { SModelElementImpl, SModelRootImpl } from "../model/smodel"; | ||
| import { TYPES } from "../types"; | ||
| import { DOMHelper } from "./dom-helper"; | ||
| import { IVNodePostprocessor } from "./vnode-postprocessor"; | ||
| import { on } from "./vnode-utils"; | ||
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| @injectable() | ||
| export class TouchTool implements IVNodePostprocessor { | ||
| @inject(TYPES.IActionDispatcher) protected actionDispatcher: IActionDispatcher; | ||
| @inject(TYPES.DOMHelper) protected domHelper: DOMHelper; | ||
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| constructor(@multiInject(TYPES.ITouchListener) @optional() protected touchListeners: ITouchListener[] = []) { } | ||
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| register(mouseListener: ITouchListener) { | ||
| this.touchListeners.push(mouseListener); | ||
| } | ||
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| deregister(mouseListener: ITouchListener) { | ||
| const index = this.touchListeners.indexOf(mouseListener); | ||
| if (index >= 0) | ||
| this.touchListeners.splice(index, 1); | ||
| } | ||
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| protected getTargetElement(model: SModelRootImpl, event: TouchEvent): SModelElementImpl | undefined { | ||
| let target = event.target as Element; | ||
| const index = model.index; | ||
| while (target) { | ||
| if (target.id) { | ||
| const element = index.getById(this.domHelper.findSModelIdByDOMElement(target)); | ||
| if (element !== undefined) | ||
| return element; | ||
| } | ||
| target = target.parentNode as Element; | ||
| } | ||
| return undefined; | ||
| } | ||
|
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| protected handleEvent(methodName: TouchEventKind, model: SModelRootImpl, event: TouchEvent) { | ||
| const element = this.getTargetElement(model, event); | ||
| if (!element) | ||
| return; | ||
| const actions = this.touchListeners | ||
| .map(listener => listener[methodName](element, event)) | ||
| .reduce((a, b) => a.concat(b)); | ||
| if (actions.length > 0) { | ||
| event.preventDefault(); | ||
| for (const actionOrPromise of actions) { | ||
| if (isAction(actionOrPromise)) { | ||
| this.actionDispatcher.dispatch(actionOrPromise); | ||
| } else { | ||
| actionOrPromise.then((action: Action) => { | ||
| this.actionDispatcher.dispatch(action); | ||
| }); | ||
| } | ||
| } | ||
| } | ||
| } | ||
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| touchStart(model: SModelRootImpl, event: TouchEvent) { | ||
| this.handleEvent('touchStart', model, event) | ||
| } | ||
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| touchMove(model: SModelRootImpl, event: TouchEvent) { | ||
| this.handleEvent('touchMove', model, event) | ||
| } | ||
|
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| touchEnd(model: SModelRootImpl, event: TouchEvent) { | ||
| this.handleEvent('touchEnd', model, event) | ||
| } | ||
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| decorate(vnode: VNode, element: SModelElementImpl): VNode { | ||
| if (element instanceof SModelRootImpl) { | ||
| on(vnode, 'touchstart', this.touchStart.bind(this, element)); | ||
| on(vnode, 'touchmove', this.touchMove.bind(this, element)); | ||
| on(vnode, 'touchend', this.touchEnd.bind(this, element)); | ||
| } | ||
| return vnode; | ||
| } | ||
|
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| postUpdate() { | ||
| } | ||
| } | ||
|
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| export type TouchEventKind = 'touchStart' | 'touchMove' | 'touchEnd'; | ||
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| export interface ITouchListener { | ||
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| touchStart(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] | ||
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| touchMove(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] | ||
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| touchEnd(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] | ||
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| } | ||
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| @injectable() | ||
| export class TouchListener implements TouchListener { | ||
|
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| touchStart(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] { | ||
| return []; | ||
| } | ||
|
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| touchMove(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] { | ||
| return []; | ||
| } | ||
|
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| touchEnd(target: SModelElementImpl, event: TouchEvent): (Action | Promise<Action>)[] { | ||
| return []; | ||
| } | ||
|
|
||
| } |
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