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* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
import {
buttonType,
buttonsType,
defaultPointerId,
defaultPointerSize,
defaultBrowserChromeSize
} from './constants';
import * as domEvents from './domEvents';
import { hasPointerEvent, platform } from './domEnvironment';
import * as touchStore from './touchStore';
/**
* Converts a PointerEvent payload to a Touch
*/
function createTouch(target, payload) {
const {
height = defaultPointerSize,
pageX,
pageY,
pointerId,
pressure = 1,
twist = 0,
width = defaultPointerSize,
x = 0,
y = 0
} = payload;
return {
clientX: x,
clientY: y,
force: pressure,
identifier: pointerId,
pageX: pageX || x,
pageY: pageY || y,
radiusX: width / 2,
radiusY: height / 2,
rotationAngle: twist,
target,
screenX: x,
screenY: y + defaultBrowserChromeSize
};
}
/**
* Converts a PointerEvent to a TouchEvent
*/
function createTouchEventPayload(target, touch, payload) {
const {
altKey = false,
ctrlKey = false,
metaKey = false,
preventDefault,
shiftKey = false,
timeStamp
} = payload;
return {
altKey,
changedTouches: [touch],
ctrlKey,
metaKey,
preventDefault,
shiftKey,
targetTouches: touchStore.getTargetTouches(target),
timeStamp,
touches: touchStore.getTouches()
};
}
function getPointerType(payload) {
let pointerType = 'mouse';
if (payload != null && payload.pointerType != null) {
pointerType = payload.pointerType;
}
return pointerType;
}
/**
* Pointer events sequences.
*
* Creates representative browser event sequences for high-level gestures based on pointers.
* This allows unit tests to be written in terms of simple pointer interactions while testing
* that the responses to those interactions account for the complex sequence of events that
* browsers produce as a result.
*
* Every time a new pointer touches the surface a 'touchstart' event should be dispatched.
* - 'changedTouches' contains the new touch.
* - 'targetTouches' contains all the active pointers for the target.
* - 'touches' contains all the active pointers on the surface.
*
* Every time an existing pointer moves a 'touchmove' event should be dispatched.
* - 'changedTouches' contains the updated touch.
*
* Every time an existing pointer leaves the surface a 'touchend' event should be dispatched.
* - 'changedTouches' contains the released touch.
* - 'targetTouches' contains any of the remaining active pointers for the target.
*/
export function contextmenu(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const pointerType = getPointerType(defaultPayload);
const {
ctrlKey,
// eslint-disable-next-line
pointerType: _,
...restPayload
} = defaultPayload;
const payload = {
pointerId: defaultPointerId,
...restPayload,
button: buttonType.primary,
buttons: buttonsType.primary,
pointerType
};
const preventDefault = payload.preventDefault;
if (pointerType === 'touch') {
Iif (hasPointerEvent()) {
dispatch(domEvents.pointerdown(payload));
}
const touch = createTouch(target, payload);
touchStore.addTouch(touch);
const touchEventPayload = createTouchEventPayload(target, touch, payload);
dispatch(domEvents.touchstart(touchEventPayload));
dispatch(
domEvents.mousemove({
...payload,
button: buttonType.primary,
buttons: buttonsType.none
})
);
dispatch(
domEvents.contextmenu({
...payload,
button: buttonType.primary,
buttons: buttonsType.none,
preventDefault
})
);
touchStore.removeTouch(touch);
} else Eif (pointerType === 'mouse') {
Iif (ctrlKey === true) {
const { button, buttons } = payload;
if (hasPointerEvent()) {
dispatch(domEvents.pointerdown({ ...payload, ctrlKey }));
}
dispatch(domEvents.mousedown({ ...payload, ctrlKey }));
if (platform.get() === 'mac') {
dispatch(domEvents.contextmenu({ button, buttons, ctrlKey, preventDefault }));
}
} else {
const button = buttonType.secondary;
const buttons = buttonsType.secondary;
Iif (hasPointerEvent()) {
dispatch(domEvents.pointerdown({ ...payload, button, buttons }));
}
dispatch(domEvents.mousedown({ ...payload, button, buttons }));
dispatch(domEvents.contextmenu({ ...payload, button, buttons, preventDefault }));
}
}
}
export function focus(target, defaultPayload = {}) {
const dispatch = (arg) => target.dispatchEvent(arg);
const { relatedTarget, ...payload } = defaultPayload;
const blurPayload = { ...payload, relatedTarget: target };
const focusPayload = { ...payload, relatedTarget };
if (relatedTarget) {
relatedTarget.dispatchEvent(domEvents.focusout(blurPayload));
}
dispatch(domEvents.focusin(focusPayload));
if (relatedTarget) {
relatedTarget.dispatchEvent(domEvents.blur(blurPayload));
}
dispatch(domEvents.focus(focusPayload));
}
export function pointercancel(target, defaultPayload) {
const dispatchEvent = (arg) => target.dispatchEvent(arg);
const pointerType = getPointerType(defaultPayload);
const payload = {
pointerId: defaultPointerId,
pointerType,
...defaultPayload
};
Iif (hasPointerEvent()) {
dispatchEvent(domEvents.pointercancel(payload));
}
if (pointerType === 'mouse') {
dispatchEvent(domEvents.dragstart(payload));
} else {
const touch = createTouch(target, payload);
touchStore.removeTouch(touch);
const touchEventPayload = createTouchEventPayload(target, touch, payload);
dispatchEvent(domEvents.touchcancel(touchEventPayload));
}
}
export function pointerdown(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const pointerType = getPointerType(defaultPayload);
const payload = {
button: buttonType.primary,
buttons: buttonsType.primary,
pointerId: defaultPointerId,
pointerType,
...defaultPayload
};
if (pointerType === 'mouse') {
if (hasPointerEvent()) {
dispatch(domEvents.pointerover(payload));
dispatch(domEvents.pointerenter(payload));
}
dispatch(domEvents.mouseover(payload));
dispatch(domEvents.mouseenter(payload));
if (hasPointerEvent()) {
dispatch(domEvents.pointerdown(payload));
}
dispatch(domEvents.mousedown(payload));
focus(target);
} else {
if (hasPointerEvent()) {
dispatch(domEvents.pointerover(payload));
dispatch(domEvents.pointerenter(payload));
dispatch(domEvents.pointerdown(payload));
}
const touch = createTouch(target, payload);
touchStore.addTouch(touch);
const touchEventPayload = createTouchEventPayload(target, touch, payload);
dispatch(domEvents.touchstart(touchEventPayload));
if (hasPointerEvent()) {
dispatch(domEvents.gotpointercapture(payload));
}
}
}
export function pointerover(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const payload = {
pointerId: defaultPointerId,
...defaultPayload
};
if (hasPointerEvent()) {
// Pointer must move before it can dispatch "over"
dispatch(domEvents.pointermove());
dispatch(domEvents.pointerover(payload));
dispatch(domEvents.pointerenter(payload));
}
dispatch(domEvents.mousemove());
dispatch(domEvents.mouseover(payload));
dispatch(domEvents.mouseenter(payload));
}
export function pointerout(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const payload = {
pointerId: defaultPointerId,
...defaultPayload
};
const { relatedTarget } = payload;
if (hasPointerEvent()) {
dispatch(domEvents.pointerout(payload));
// Only call the leave event if exiting the subtree
if (!target.contains(relatedTarget)) {
dispatch(domEvents.pointerleave(payload));
}
}
dispatch(domEvents.mouseout(payload));
if (!target.contains(relatedTarget)) {
// Only call the leave event if exiting the subtree
dispatch(domEvents.mouseleave(payload));
}
}
// pointer is not down while moving
export function pointerhover(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const payload = {
pointerId: defaultPointerId,
...defaultPayload
};
if (hasPointerEvent()) {
dispatch(domEvents.pointermove(payload));
}
dispatch(domEvents.mousemove(payload));
}
// pointer is down while moving
export function pointermove(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const pointerType = getPointerType(defaultPayload);
const payload = {
button: buttonType.primary,
buttons: buttonsType.primary,
pointerId: defaultPointerId,
pointerType,
...defaultPayload
};
if (pointerType === 'mouse') {
if (hasPointerEvent()) {
dispatch(domEvents.pointermove({ pressure: 0.5, button: -1, ...payload }));
}
dispatch(domEvents.mousemove(payload));
} else {
if (hasPointerEvent()) {
dispatch(
domEvents.pointermove({
pressure: 1,
button: -1,
...payload
})
);
}
const touch = createTouch(target, payload);
touchStore.updateTouch(touch);
const touchEventPayload = createTouchEventPayload(target, touch, payload);
dispatch(domEvents.touchmove(touchEventPayload));
}
}
export function pointerup(target, defaultPayload) {
const dispatch = (arg) => target.dispatchEvent(arg);
const pointerType = getPointerType(defaultPayload);
const payload = {
pointerId: defaultPointerId,
pointerType,
...defaultPayload
};
const isPrimaryButton = payload.button === buttonType.primary;
const isContextMenuAction = platform.get() === 'mac' && payload.ctrlKey === true;
if (pointerType === 'mouse') {
if (hasPointerEvent()) {
dispatch(domEvents.pointerup(payload));
}
dispatch(domEvents.mouseup(payload));
if (isPrimaryButton && !isContextMenuAction) {
dispatch(domEvents.click(payload));
}
} else {
if (hasPointerEvent()) {
dispatch(domEvents.pointerup(payload));
dispatch(domEvents.lostpointercapture(payload));
dispatch(domEvents.pointerout(payload));
dispatch(domEvents.pointerleave(payload));
}
const touch = createTouch(target, payload);
const isGesture = touchStore.removeTouch(touch);
const touchEventPayload = createTouchEventPayload(target, touch, payload);
dispatch(domEvents.touchend(touchEventPayload));
// emulated mouse events don't occur for multi-touch or after 'touchmove'
if (!isGesture) {
dispatch(domEvents.mouseover(payload));
dispatch(domEvents.mousemove(payload));
dispatch(domEvents.mousedown(payload));
}
focus(target);
if (!isGesture) {
dispatch(domEvents.mouseup(payload));
}
Iif (isPrimaryButton && !isContextMenuAction) {
dispatch(domEvents.click(payload));
}
}
}
/**
* This function should be called after each test to ensure the touchStore is cleared
* in cases where the mock pointers weren't released before the test completed
* (e.g., a test failed or ran a partial gesture).
*/
export function clearPointers() {
touchStore.clear();
}
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