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{\n AdaptedEvent,\n EventTypes,\n PointerType,\n TouchEventType,\n} from '../interfaces';\nimport EventManager from './EventManager';\nimport { isPointerInBounds } from '../utils';\n\nexport default class TouchEventManager extends EventManager {\n public setListeners(): void {\n this.view.addEventListener('touchstart', (event: TouchEvent) => {\n for (let i = 0; i < event.changedTouches.length; ++i) {\n const adaptedEvent: AdaptedEvent = this.mapEvent(\n event,\n EventTypes.DOWN,\n i,\n TouchEventType.DOWN\n );\n\n // Here we skip stylus, because in case of anything different than touch we want to handle it by using PointerEvents\n // If we leave stylus to send touch events, handlers will receive every action twice\n if (\n !isPointerInBounds(this.view, {\n x: adaptedEvent.x,\n y: adaptedEvent.y,\n }) ||\n //@ts-ignore touchType field does exist\n event.changedTouches[i].touchType === 'stylus'\n ) {\n continue;\n }\n\n this.markAsInBounds(adaptedEvent.pointerId);\n\n if (++this.activePointersCounter > 1) {\n adaptedEvent.eventType = EventTypes.ADDITIONAL_POINTER_DOWN;\n this.onPointerAdd(adaptedEvent);\n } else {\n this.onPointerDown(adaptedEvent);\n }\n }\n });\n\n this.view.addEventListener('touchmove', (event: TouchEvent) => {\n for (let i = 0; i < event.changedTouches.length; ++i) {\n const adaptedEvent: AdaptedEvent = this.mapEvent(\n event,\n EventTypes.MOVE,\n i,\n TouchEventType.MOVE\n );\n //@ts-ignore touchType field does exist\n if (event.changedTouches[i].touchType === 'stylus') {\n continue;\n }\n\n const inBounds: boolean = isPointerInBounds(this.view, {\n x: adaptedEvent.x,\n y: adaptedEvent.y,\n });\n\n const pointerIndex: number = this.pointersInBounds.indexOf(\n adaptedEvent.pointerId\n );\n\n if (inBounds) {\n if (pointerIndex < 0) {\n adaptedEvent.eventType = EventTypes.ENTER;\n this.onPointerEnter(adaptedEvent);\n this.markAsInBounds(adaptedEvent.pointerId);\n } else {\n this.onPointerMove(adaptedEvent);\n }\n } else {\n if (pointerIndex >= 0) {\n adaptedEvent.eventType = EventTypes.LEAVE;\n this.onPointerLeave(adaptedEvent);\n this.markAsOutOfBounds(adaptedEvent.pointerId);\n } else {\n this.onPointerOutOfBounds(adaptedEvent);\n }\n }\n }\n });\n\n this.view.addEventListener('touchend', (event: TouchEvent) => {\n for (let i = 0; i < event.changedTouches.length; ++i) {\n // When we call reset on gesture handlers, it also resets their event managers\n // In some handlers (like RotationGestureHandler) reset is called before all pointers leave view\n // This means, that activePointersCounter will be set to 0, while there are still remaining pointers on view\n // Removing them will end in activePointersCounter going below 0, therefore handlers won't behave properly\n if (this.activePointersCounter === 0) {\n break;\n }\n\n //@ts-ignore touchType field does exist\n if (event.changedTouches[i].touchType === 'stylus') {\n continue;\n }\n\n const adaptedEvent: AdaptedEvent = this.mapEvent(\n event,\n EventTypes.UP,\n i,\n TouchEventType.UP\n );\n\n this.markAsOutOfBounds(adaptedEvent.pointerId);\n\n if (--this.activePointersCounter > 0) {\n adaptedEvent.eventType = EventTypes.ADDITIONAL_POINTER_UP;\n this.onPointerRemove(adaptedEvent);\n } else {\n this.onPointerUp(adaptedEvent);\n }\n }\n });\n\n this.view.addEventListener('touchcancel', (event: TouchEvent) => {\n for (let i = 0; i < event.changedTouches.length; ++i) {\n const adaptedEvent: AdaptedEvent = this.mapEvent(\n event,\n EventTypes.CANCEL,\n i,\n TouchEventType.CANCELLED\n );\n\n //@ts-ignore touchType field does exist\n if (event.changedTouches[i].touchType === 'stylus') {\n continue;\n }\n\n this.onPointerCancel(adaptedEvent);\n this.markAsOutOfBounds(adaptedEvent.pointerId);\n this.activePointersCounter = 0;\n }\n });\n }\n\n protected mapEvent(\n event: TouchEvent,\n eventType: EventTypes,\n index: number,\n touchEventType: TouchEventType\n ): AdaptedEvent {\n const rect = this.view.getBoundingClientRect();\n const clientX = event.changedTouches[index].clientX;\n const clientY = event.changedTouches[index].clientY;\n\n return {\n x: clientX,\n y: clientY,\n offsetX: clientX - rect.left,\n offsetY: clientY - rect.top,\n pointerId: event.changedTouches[index].identifier,\n eventType: eventType,\n pointerType: PointerType.TOUCH,\n time: event.timeStamp,\n allTouches: event.touches,\n changedTouches: event.changedTouches,\n touchEventType: touchEventType,\n };\n }\n}\n"]}