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/* global document */
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import {
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addEventListener,
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removeEventListener,
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normalizeEvent,
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getNativeEvent
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} from '../core/event';
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import * as zrUtil from '../core/util';
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import Eventful from '../core/Eventful';
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import env from '../core/env';
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import { Dictionary, ZRRawEvent, ZRRawMouseEvent } from '../core/types';
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import { VectorArray } from '../core/vector';
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import Handler from '../Handler';
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type DomHandlersMap = Dictionary<(this: HandlerDomProxy, event: ZRRawEvent) => void>
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type DomExtended = Node & {
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domBelongToZr: boolean
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}
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const TOUCH_CLICK_DELAY = 300;
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const globalEventSupported = env.domSupported;
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const localNativeListenerNames = (function () {
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const mouseHandlerNames = [
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'click', 'dblclick', 'mousewheel', 'wheel', 'mouseout',
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'mouseup', 'mousedown', 'mousemove', 'contextmenu'
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];
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const touchHandlerNames = [
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'touchstart', 'touchend', 'touchmove'
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];
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const pointerEventNameMap = {
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pointerdown: 1, pointerup: 1, pointermove: 1, pointerout: 1
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};
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const pointerHandlerNames = zrUtil.map(mouseHandlerNames, function (name) {
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const nm = name.replace('mouse', 'pointer');
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return pointerEventNameMap.hasOwnProperty(nm) ? nm : name;
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});
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return {
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mouse: mouseHandlerNames,
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touch: touchHandlerNames,
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pointer: pointerHandlerNames
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};
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})();
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const globalNativeListenerNames = {
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mouse: ['mousemove', 'mouseup'],
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pointer: ['pointermove', 'pointerup']
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};
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let wheelEventSupported = false;
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// Although firfox has 'DOMMouseScroll' event and do not has 'mousewheel' event,
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// the 'DOMMouseScroll' event do not performe the same behavior on touch pad device
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// (like on Mac) ('DOMMouseScroll' will be triggered only if a big wheel delta).
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// So we should not use it.
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// function eventNameFix(name: string) {
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// return (name === 'mousewheel' && env.browser.firefox) ? 'DOMMouseScroll' : name;
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// }
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function isPointerFromTouch(event: ZRRawEvent) {
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const pointerType = (event as any).pointerType;
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return pointerType === 'pen' || pointerType === 'touch';
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}
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// function useMSGuesture(handlerProxy, event) {
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// return isPointerFromTouch(event) && !!handlerProxy._msGesture;
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// }
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// function onMSGestureChange(proxy, event) {
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// if (event.translationX || event.translationY) {
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// // mousemove is carried by MSGesture to reduce the sensitivity.
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// proxy.handler.dispatchToElement(event.target, 'mousemove', event);
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// }
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// if (event.scale !== 1) {
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// event.pinchX = event.offsetX;
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// event.pinchY = event.offsetY;
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// event.pinchScale = event.scale;
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// proxy.handler.dispatchToElement(event.target, 'pinch', event);
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// }
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// }
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/**
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* Prevent mouse event from being dispatched after Touch Events action
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* @see <https://github.com/deltakosh/handjs/blob/master/src/hand.base.js>
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* 1. Mobile browsers dispatch mouse events 300ms after touchend.
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* 2. Chrome for Android dispatch mousedown for long-touch about 650ms
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* Result: Blocking Mouse Events for 700ms.
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*
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* @param {DOMHandlerScope} scope
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*/
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function setTouchTimer(scope: DOMHandlerScope) {
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scope.touching = true;
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if (scope.touchTimer != null) {
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clearTimeout(scope.touchTimer);
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scope.touchTimer = null;
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}
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scope.touchTimer = setTimeout(function () {
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scope.touching = false;
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scope.touchTimer = null;
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}, 700);
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}
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// Mark touch, which is useful in distinguish touch and
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// mouse event in upper applicatoin.
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function markTouch(event: ZRRawEvent) {
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event && (event.zrByTouch = true);
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}
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// function markTriggeredFromLocal(event) {
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// event && (event.__zrIsFromLocal = true);
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// }
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// function isTriggeredFromLocal(instance, event) {
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// return !!(event && event.__zrIsFromLocal);
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// }
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function normalizeGlobalEvent(instance: HandlerDomProxy, event: ZRRawEvent) {
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// offsetX, offsetY still need to be calculated. They are necessary in the event
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// handlers of the upper applications. Set `true` to force calculate them.
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return normalizeEvent(
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instance.dom,
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// TODO ANY TYPE
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new FakeGlobalEvent(instance, event) as any as ZRRawEvent,
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true
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);
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}
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/**
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* Detect whether the given el is in `painterRoot`.
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*/
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function isLocalEl(instance: HandlerDomProxy, el: Node) {
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let elTmp = el;
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let isLocal = false;
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while (elTmp && elTmp.nodeType !== 9
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&& !(
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isLocal = (elTmp as DomExtended).domBelongToZr
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|| (elTmp !== el && elTmp === instance.painterRoot)
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)
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) {
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elTmp = elTmp.parentNode;
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}
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return isLocal;
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}
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/**
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* Make a fake event but not change the original event,
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* because the global event probably be used by other
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* listeners not belonging to zrender.
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* @class
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*/
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class FakeGlobalEvent {
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type: string
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target: HTMLElement
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currentTarget: HTMLElement
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pointerType: string
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clientX: number
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clientY: number
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constructor(instance: HandlerDomProxy, event: ZRRawEvent) {
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this.type = event.type;
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this.target = this.currentTarget = instance.dom;
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this.pointerType = (event as any).pointerType;
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// Necessray for the force calculation of zrX, zrY
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this.clientX = (event as ZRRawMouseEvent).clientX;
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this.clientY = (event as ZRRawMouseEvent).clientY;
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// Because we do not mount global listeners to touch events,
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// we do not copy `targetTouches` and `changedTouches` here.
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}
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// we make the default methods on the event do nothing,
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// otherwise it is dangerous. See more details in
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// [DRAG_OUTSIDE] in `Handler.js`.
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stopPropagation = zrUtil.noop
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stopImmediatePropagation = zrUtil.noop
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preventDefault = zrUtil.noop
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}
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/**
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* Local DOM Handlers
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* @this {HandlerProxy}
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*/
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const localDOMHandlers: DomHandlersMap = {
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mousedown(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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this.__mayPointerCapture = [event.zrX, event.zrY];
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this.trigger('mousedown', event);
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},
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mousemove(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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const downPoint = this.__mayPointerCapture;
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if (downPoint && (event.zrX !== downPoint[0] || event.zrY !== downPoint[1])) {
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this.__togglePointerCapture(true);
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}
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this.trigger('mousemove', event);
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},
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mouseup(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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this.__togglePointerCapture(false);
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this.trigger('mouseup', event);
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},
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mouseout(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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// There might be some doms created by upper layer application
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// at the same level of painter.getViewportRoot() (e.g., tooltip
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// dom created by echarts), where 'globalout' event should not
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// be triggered when mouse enters these doms. (But 'mouseout'
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// should be triggered at the original hovered element as usual).
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const element = (event as any).toElement || (event as ZRRawMouseEvent).relatedTarget;
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// For SVG rendering, there are SVG elements inside `this.dom`.
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// (especially in decal case). Should not to handle those "mouseout"..
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if (!isLocalEl(this, element)) {
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// Similarly to the browser did on `document` and touch event,
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// `globalout` will be delayed to final pointer cature release.
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if (this.__pointerCapturing) {
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event.zrEventControl = 'no_globalout';
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}
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this.trigger('mouseout', event);
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}
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},
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wheel(event: ZRRawEvent) {
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// Morden agent has supported event `wheel` instead of `mousewheel`.
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// About the polyfill of the props "delta", see "arc/core/event.ts".
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// Firefox only support `wheel` rather than `mousewheel`. Although firfox has been supporting
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// event `DOMMouseScroll`, it do not act the same behavior as `wheel` on touch pad device
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// like on Mac, where `DOMMouseScroll` will be triggered only if a big wheel delta occurs,
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// and it results in no chance to "preventDefault". So we should not use `DOMMouseScroll`.
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wheelEventSupported = true;
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event = normalizeEvent(this.dom, event);
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// Follow the definition of the previous version, the zrender event name is still 'mousewheel'.
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this.trigger('mousewheel', event);
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},
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mousewheel(event: ZRRawEvent) {
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// IE8- and some other lagacy agent do not support event `wheel`, so we still listen
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// to the legacy event `mouseevent`.
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// Typically if event `wheel` is supported and the handler has been mounted on a
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// DOM element, the legacy `mousewheel` event will not be triggered (Chrome and Safari).
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// But we still do this guard to avoid to duplicated handle.
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if (wheelEventSupported) {
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return;
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}
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event = normalizeEvent(this.dom, event);
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this.trigger('mousewheel', event);
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},
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touchstart(event: ZRRawEvent) {
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// Default mouse behaviour should not be disabled here.
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// For example, page may needs to be slided.
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event = normalizeEvent(this.dom, event);
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markTouch(event);
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this.__lastTouchMoment = new Date();
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this.handler.processGesture(event, 'start');
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// For consistent event listener for both touch device and mouse device,
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// we simulate "mouseover-->mousedown" in touch device. So we trigger
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// `mousemove` here (to trigger `mouseover` inside), and then trigger
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// `mousedown`.
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localDOMHandlers.mousemove.call(this, event);
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localDOMHandlers.mousedown.call(this, event);
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},
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touchmove(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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markTouch(event);
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this.handler.processGesture(event, 'change');
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// Mouse move should always be triggered no matter whether
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// there is gestrue event, because mouse move and pinch may
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// be used at the same time.
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localDOMHandlers.mousemove.call(this, event);
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},
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touchend(event: ZRRawEvent) {
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event = normalizeEvent(this.dom, event);
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markTouch(event);
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this.handler.processGesture(event, 'end');
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localDOMHandlers.mouseup.call(this, event);
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// Do not trigger `mouseout` here, in spite of `mousemove`(`mouseover`) is
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// triggered in `touchstart`. This seems to be illogical, but by this mechanism,
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// we can conveniently implement "hover style" in both PC and touch device just
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// by listening to `mouseover` to add "hover style" and listening to `mouseout`
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// to remove "hover style" on an element, without any additional code for
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// compatibility. (`mouseout` will not be triggered in `touchend`, so "hover
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// style" will remain for user view)
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// click event should always be triggered no matter whether
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// there is gestrue event. System click can not be prevented.
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if (+new Date() - (+this.__lastTouchMoment) < TOUCH_CLICK_DELAY) {
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localDOMHandlers.click.call(this, event);
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}
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},
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pointerdown(event: ZRRawEvent) {
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localDOMHandlers.mousedown.call(this, event);
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// if (useMSGuesture(this, event)) {
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// this._msGesture.addPointer(event.pointerId);
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// }
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},
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pointermove(event: ZRRawEvent) {
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// FIXME
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// pointermove is so sensitive that it always triggered when
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// tap(click) on touch screen, which affect some judgement in
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// upper application. So, we don't support mousemove on MS touch
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// device yet.
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if (!isPointerFromTouch(event)) {
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localDOMHandlers.mousemove.call(this, event);
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}
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},
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pointerup(event: ZRRawEvent) {
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localDOMHandlers.mouseup.call(this, event);
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},
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pointerout(event: ZRRawEvent) {
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// pointerout will be triggered when tap on touch screen
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// (IE11+/Edge on MS Surface) after click event triggered,
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// which is inconsistent with the mousout behavior we defined
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// in touchend. So we unify them.
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// (check localDOMHandlers.touchend for detailed explanation)
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if (!isPointerFromTouch(event)) {
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localDOMHandlers.mouseout.call(this, event);
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}
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}
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};
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/**
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* Othere DOM UI Event handlers for zr dom.
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* @this {HandlerProxy}
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*/
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zrUtil.each(['click', 'dblclick', 'contextmenu'], function (name) {
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localDOMHandlers[name] = function (event) {
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event = normalizeEvent(this.dom, event);
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this.trigger(name, event);
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};
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});
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/**
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* DOM UI Event handlers for global page.
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*
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* [Caution]:
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* those handlers should both support in capture phase and bubble phase!
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*/
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const globalDOMHandlers: DomHandlersMap = {
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pointermove: function (event: ZRRawEvent) {
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// FIXME
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// pointermove is so sensitive that it always triggered when
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// tap(click) on touch screen, which affect some judgement in
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// upper application. So, we don't support mousemove on MS touch
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// device yet.
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if (!isPointerFromTouch(event)) {
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globalDOMHandlers.mousemove.call(this, event);
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}
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},
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pointerup: function (event: ZRRawEvent) {
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globalDOMHandlers.mouseup.call(this, event);
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},
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mousemove: function (event: ZRRawEvent) {
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this.trigger('mousemove', event);
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},
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mouseup: function (event: ZRRawEvent) {
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const pointerCaptureReleasing = this.__pointerCapturing;
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this.__togglePointerCapture(false);
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this.trigger('mouseup', event);
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if (pointerCaptureReleasing) {
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event.zrEventControl = 'only_globalout';
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this.trigger('mouseout', event);
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}
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}
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};
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function mountLocalDOMEventListeners(instance: HandlerDomProxy, scope: DOMHandlerScope) {
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const domHandlers = scope.domHandlers;
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if (env.pointerEventsSupported) { // Only IE11+/Edge
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// 1. On devices that both enable touch and mouse (e.g., MS Surface and lenovo X240),
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// IE11+/Edge do not trigger touch event, but trigger pointer event and mouse event
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// at the same time.
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// 2. On MS Surface, it probablely only trigger mousedown but no mouseup when tap on
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// screen, which do not occurs in pointer event.
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// So we use pointer event to both detect touch gesture and mouse behavior.
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zrUtil.each(localNativeListenerNames.pointer, function (nativeEventName) {
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mountSingleDOMEventListener(scope, nativeEventName, function (event) {
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// markTriggeredFromLocal(event);
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domHandlers[nativeEventName].call(instance, event);
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});
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});
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// FIXME
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// Note: MS Gesture require CSS touch-action set. But touch-action is not reliable,
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// which does not prevent defuault behavior occasionally (which may cause view port
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// zoomed in but use can not zoom it back). And event.preventDefault() does not work.
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// So we have to not to use MSGesture and not to support touchmove and pinch on MS
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// touch screen. And we only support click behavior on MS touch screen now.
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// MS Gesture Event is only supported on IE11+/Edge and on Windows 8+.
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// We don't support touch on IE on win7.
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// See <https://msdn.microsoft.com/en-us/library/dn433243(v=vs.85).aspx>
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// if (typeof MSGesture === 'function') {
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// (this._msGesture = new MSGesture()).target = dom; // jshint ignore:line
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// dom.addEventListener('MSGestureChange', onMSGestureChange);
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// }
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}
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else {
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if (env.touchEventsSupported) {
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zrUtil.each(localNativeListenerNames.touch, function (nativeEventName) {
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mountSingleDOMEventListener(scope, nativeEventName, function (event) {
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// markTriggeredFromLocal(event);
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domHandlers[nativeEventName].call(instance, event);
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setTouchTimer(scope);
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});
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});
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// Handler of 'mouseout' event is needed in touch mode, which will be mounted below.
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// addEventListener(root, 'mouseout', this._mouseoutHandler);
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}
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// 1. Considering some devices that both enable touch and mouse event (like on MS Surface
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// and lenovo X240, @see #2350), we make mouse event be always listened, otherwise
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// mouse event can not be handle in those devices.
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// 2. On MS Surface, Chrome will trigger both touch event and mouse event. How to prevent
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// mouseevent after touch event triggered, see `setTouchTimer`.
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zrUtil.each(localNativeListenerNames.mouse, function (nativeEventName) {
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mountSingleDOMEventListener(scope, nativeEventName, function (event: ZRRawEvent) {
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event = getNativeEvent(event);
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if (!scope.touching) {
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// markTriggeredFromLocal(event);
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domHandlers[nativeEventName].call(instance, event);
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}
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});
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});
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}
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}
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function mountGlobalDOMEventListeners(instance: HandlerDomProxy, scope: DOMHandlerScope) {
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// Only IE11+/Edge. See the comment in `mountLocalDOMEventListeners`.
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if (env.pointerEventsSupported) {
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zrUtil.each(globalNativeListenerNames.pointer, mount);
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}
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// Touch event has implemented "drag outside" so we do not mount global listener for touch event.
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// (see https://www.w3.org/TR/touch-events/#the-touchmove-event) (see also `DRAG_OUTSIDE`).
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// We do not consider "both-support-touch-and-mouse device" for this feature (see the comment of
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// `mountLocalDOMEventListeners`) to avoid bugs util some requirements come.
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else if (!env.touchEventsSupported) {
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zrUtil.each(globalNativeListenerNames.mouse, mount);
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}
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function mount(nativeEventName: string) {
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function nativeEventListener(event: ZRRawEvent) {
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event = getNativeEvent(event);
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// See the reason in [DRAG_OUTSIDE] in `Handler.js`
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// This checking supports both `useCapture` or not.
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// PENDING: if there is performance issue in some devices,
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// we probably can not use `useCapture` and change a easier
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// to judes whether local (mark).
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if (!isLocalEl(instance, event.target as Node)) {
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event = normalizeGlobalEvent(instance, event);
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scope.domHandlers[nativeEventName].call(instance, event);
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}
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}
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mountSingleDOMEventListener(
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scope, nativeEventName, nativeEventListener,
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{capture: true} // See [DRAG_OUTSIDE] in `Handler.js`
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);
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}
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}
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function mountSingleDOMEventListener(
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scope: DOMHandlerScope,
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nativeEventName: string,
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listener: EventListener,
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opt?: boolean | AddEventListenerOptions
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) {
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scope.mounted[nativeEventName] = listener;
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scope.listenerOpts[nativeEventName] = opt;
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addEventListener(scope.domTarget, nativeEventName, listener, opt);
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}
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function unmountDOMEventListeners(scope: DOMHandlerScope) {
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const mounted = scope.mounted;
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for (let nativeEventName in mounted) {
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if (mounted.hasOwnProperty(nativeEventName)) {
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removeEventListener(
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scope.domTarget, nativeEventName, mounted[nativeEventName],
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scope.listenerOpts[nativeEventName]
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);
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}
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}
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scope.mounted = {};
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}
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class DOMHandlerScope {
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domTarget: HTMLElement | HTMLDocument
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domHandlers: DomHandlersMap
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// Key: eventName, value: mounted handler functions.
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// Used for unmount.
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mounted: Dictionary<EventListener> = {};
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listenerOpts: Dictionary<boolean | AddEventListenerOptions> = {};
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touchTimer: ReturnType<typeof setTimeout>;
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touching = false;
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constructor(
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domTarget: HTMLElement | HTMLDocument,
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domHandlers: DomHandlersMap
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) {
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this.domTarget = domTarget;
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this.domHandlers = domHandlers;
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}
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}
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export default class HandlerDomProxy extends Eventful {
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dom: HTMLElement
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painterRoot: HTMLElement
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handler: Handler
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private _localHandlerScope: DOMHandlerScope
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private _globalHandlerScope: DOMHandlerScope
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__lastTouchMoment: Date
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// See [DRAG_OUTSIDE] in `Handler.ts`.
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__pointerCapturing = false
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// [x, y]
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__mayPointerCapture: VectorArray
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constructor(dom: HTMLElement, painterRoot: HTMLElement) {
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super();
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this.dom = dom;
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this.painterRoot = painterRoot;
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this._localHandlerScope = new DOMHandlerScope(dom, localDOMHandlers);
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if (globalEventSupported) {
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this._globalHandlerScope = new DOMHandlerScope(document, globalDOMHandlers);
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}
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mountLocalDOMEventListeners(this, this._localHandlerScope);
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}
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dispose() {
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unmountDOMEventListeners(this._localHandlerScope);
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if (globalEventSupported) {
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unmountDOMEventListeners(this._globalHandlerScope);
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}
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}
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setCursor(cursorStyle: string) {
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this.dom.style && (this.dom.style.cursor = cursorStyle || 'default');
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}
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/**
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* See [DRAG_OUTSIDE] in `Handler.js`.
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* @implement
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* @param isPointerCapturing Should never be `null`/`undefined`.
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* `true`: start to capture pointer if it is not capturing.
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* `false`: end the capture if it is capturing.
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*/
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__togglePointerCapture(isPointerCapturing?: boolean) {
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this.__mayPointerCapture = null;
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if (globalEventSupported
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&& ((+this.__pointerCapturing) ^ (+isPointerCapturing))
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) {
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this.__pointerCapturing = isPointerCapturing;
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const globalHandlerScope = this._globalHandlerScope;
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isPointerCapturing
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? mountGlobalDOMEventListeners(this, globalHandlerScope)
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: unmountDOMEventListeners(globalHandlerScope);
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}
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}
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}
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export interface HandlerProxyInterface extends Eventful {
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handler: Handler
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dispose: () => void
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setCursor: (cursorStyle?: string) => void
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}
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