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316 lines
13 KiB
JavaScript
316 lines
13 KiB
JavaScript
/**
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* @module ol/MapBrowserEventHandler
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*/
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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import EventType from './events/EventType.js';
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import MapBrowserEvent from './MapBrowserEvent.js';
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import MapBrowserEventType from './MapBrowserEventType.js';
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import PointerEventType from './pointer/EventType.js';
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import Target from './events/Target.js';
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import { PASSIVE_EVENT_LISTENERS } from './has.js';
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import { VOID } from './functions.js';
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import { getValues } from './obj.js';
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import { listen, unlistenByKey } from './events.js';
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var MapBrowserEventHandler = /** @class */ (function (_super) {
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__extends(MapBrowserEventHandler, _super);
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/**
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* @param {import("./PluggableMap.js").default} map The map with the viewport to listen to events on.
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* @param {number} [moveTolerance] The minimal distance the pointer must travel to trigger a move.
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*/
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function MapBrowserEventHandler(map, moveTolerance) {
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var _this = _super.call(this, map) || this;
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/**
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* This is the element that we will listen to the real events on.
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* @type {import("./PluggableMap.js").default}
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* @private
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*/
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_this.map_ = map;
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/**
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* @type {any}
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* @private
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*/
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_this.clickTimeoutId_;
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/**
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* Emulate dblclick and singleclick. Will be true when only one pointer is active.
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* @type {boolean}
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*/
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_this.emulateClicks_ = false;
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/**
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* @type {boolean}
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* @private
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*/
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_this.dragging_ = false;
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/**
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* @type {!Array<import("./events.js").EventsKey>}
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* @private
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*/
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_this.dragListenerKeys_ = [];
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/**
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* @type {number}
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* @private
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*/
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_this.moveTolerance_ = moveTolerance === undefined ? 1 : moveTolerance;
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/**
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* The most recent "down" type event (or null if none have occurred).
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* Set on pointerdown.
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* @type {PointerEvent|null}
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* @private
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*/
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_this.down_ = null;
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var element = _this.map_.getViewport();
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/**
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* @type {Array<PointerEvent>}
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* @private
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*/
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_this.activePointers_ = [];
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/**
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* @type {!Object<number, Event>}
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* @private
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*/
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_this.trackedTouches_ = {};
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_this.element_ = element;
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/**
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* @type {?import("./events.js").EventsKey}
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* @private
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*/
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_this.pointerdownListenerKey_ = listen(element, PointerEventType.POINTERDOWN, _this.handlePointerDown_, _this);
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/**
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* @type {PointerEvent}
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* @private
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*/
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_this.originalPointerMoveEvent_;
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/**
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* @type {?import("./events.js").EventsKey}
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* @private
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*/
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_this.relayedListenerKey_ = listen(element, PointerEventType.POINTERMOVE, _this.relayMoveEvent_, _this);
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/**
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* @private
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*/
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_this.boundHandleTouchMove_ = _this.handleTouchMove_.bind(_this);
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_this.element_.addEventListener(EventType.TOUCHMOVE, _this.boundHandleTouchMove_, PASSIVE_EVENT_LISTENERS ? { passive: false } : false);
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return _this;
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}
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.emulateClick_ = function (pointerEvent) {
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var newEvent = new MapBrowserEvent(MapBrowserEventType.CLICK, this.map_, pointerEvent);
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this.dispatchEvent(newEvent);
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if (this.clickTimeoutId_ !== undefined) {
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// double-click
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clearTimeout(this.clickTimeoutId_);
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this.clickTimeoutId_ = undefined;
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newEvent = new MapBrowserEvent(MapBrowserEventType.DBLCLICK, this.map_, pointerEvent);
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this.dispatchEvent(newEvent);
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}
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else {
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// click
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this.clickTimeoutId_ = setTimeout(
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/** @this {MapBrowserEventHandler} */
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function () {
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this.clickTimeoutId_ = undefined;
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var newEvent = new MapBrowserEvent(MapBrowserEventType.SINGLECLICK, this.map_, pointerEvent);
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this.dispatchEvent(newEvent);
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}.bind(this), 250);
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}
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};
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/**
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* Keeps track on how many pointers are currently active.
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*
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.updateActivePointers_ = function (pointerEvent) {
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var event = pointerEvent;
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var id = event.pointerId;
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if (event.type == MapBrowserEventType.POINTERUP ||
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event.type == MapBrowserEventType.POINTERCANCEL) {
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delete this.trackedTouches_[id];
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for (var pointerId in this.trackedTouches_) {
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if (this.trackedTouches_[pointerId].target !== event.target) {
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// Some platforms assign a new pointerId when the target changes.
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// If this happens, delete one tracked pointer. If there is more
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// than one tracked pointer for the old target, it will be cleared
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// by subsequent POINTERUP events from other pointers.
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delete this.trackedTouches_[pointerId];
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break;
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}
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}
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}
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else if (event.type == MapBrowserEventType.POINTERDOWN ||
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event.type == MapBrowserEventType.POINTERMOVE) {
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this.trackedTouches_[id] = event;
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}
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this.activePointers_ = getValues(this.trackedTouches_);
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};
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.handlePointerUp_ = function (pointerEvent) {
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this.updateActivePointers_(pointerEvent);
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var newEvent = new MapBrowserEvent(MapBrowserEventType.POINTERUP, this.map_, pointerEvent, undefined, undefined, this.activePointers_);
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this.dispatchEvent(newEvent);
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// We emulate click events on left mouse button click, touch contact, and pen
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// contact. isMouseActionButton returns true in these cases (evt.button is set
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// to 0).
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// See http://www.w3.org/TR/pointerevents/#button-states
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// We only fire click, singleclick, and doubleclick if nobody has called
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// event.preventDefault().
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if (this.emulateClicks_ &&
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!newEvent.defaultPrevented &&
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!this.dragging_ &&
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this.isMouseActionButton_(pointerEvent)) {
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this.emulateClick_(this.down_);
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}
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if (this.activePointers_.length === 0) {
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this.dragListenerKeys_.forEach(unlistenByKey);
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this.dragListenerKeys_.length = 0;
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this.dragging_ = false;
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this.down_ = null;
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}
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};
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @return {boolean} If the left mouse button was pressed.
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* @private
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*/
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MapBrowserEventHandler.prototype.isMouseActionButton_ = function (pointerEvent) {
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return pointerEvent.button === 0;
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};
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.handlePointerDown_ = function (pointerEvent) {
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this.emulateClicks_ = this.activePointers_.length === 0;
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this.updateActivePointers_(pointerEvent);
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var newEvent = new MapBrowserEvent(MapBrowserEventType.POINTERDOWN, this.map_, pointerEvent, undefined, undefined, this.activePointers_);
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this.dispatchEvent(newEvent);
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// Store a copy of the down event
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this.down_ = /** @type {PointerEvent} */ ({});
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for (var property in pointerEvent) {
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var value = pointerEvent[property];
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this.down_[property] = typeof value === 'function' ? VOID : value;
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}
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if (this.dragListenerKeys_.length === 0) {
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var doc = this.map_.getOwnerDocument();
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this.dragListenerKeys_.push(listen(doc, MapBrowserEventType.POINTERMOVE, this.handlePointerMove_, this), listen(doc, MapBrowserEventType.POINTERUP, this.handlePointerUp_, this),
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/* Note that the listener for `pointercancel is set up on
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* `pointerEventHandler_` and not `documentPointerEventHandler_` like
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* the `pointerup` and `pointermove` listeners.
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*
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* The reason for this is the following: `TouchSource.vacuumTouches_()`
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* issues `pointercancel` events, when there was no `touchend` for a
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* `touchstart`. Now, let's say a first `touchstart` is registered on
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* `pointerEventHandler_`. The `documentPointerEventHandler_` is set up.
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* But `documentPointerEventHandler_` doesn't know about the first
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* `touchstart`. If there is no `touchend` for the `touchstart`, we can
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* only receive a `touchcancel` from `pointerEventHandler_`, because it is
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* only registered there.
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*/
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listen(this.element_, MapBrowserEventType.POINTERCANCEL, this.handlePointerUp_, this));
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if (this.element_.getRootNode && this.element_.getRootNode() !== doc) {
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this.dragListenerKeys_.push(listen(this.element_.getRootNode(), MapBrowserEventType.POINTERUP, this.handlePointerUp_, this));
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}
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}
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};
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.handlePointerMove_ = function (pointerEvent) {
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// Between pointerdown and pointerup, pointermove events are triggered.
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// To avoid a 'false' touchmove event to be dispatched, we test if the pointer
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// moved a significant distance.
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if (this.isMoving_(pointerEvent)) {
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this.updateActivePointers_(pointerEvent);
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this.dragging_ = true;
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var newEvent = new MapBrowserEvent(MapBrowserEventType.POINTERDRAG, this.map_, pointerEvent, this.dragging_, undefined, this.activePointers_);
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this.dispatchEvent(newEvent);
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}
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};
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/**
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* Wrap and relay a pointermove event.
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @private
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*/
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MapBrowserEventHandler.prototype.relayMoveEvent_ = function (pointerEvent) {
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this.originalPointerMoveEvent_ = pointerEvent;
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var dragging = !!(this.down_ && this.isMoving_(pointerEvent));
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this.dispatchEvent(new MapBrowserEvent(MapBrowserEventType.POINTERMOVE, this.map_, pointerEvent, dragging));
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};
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/**
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* Flexible handling of a `touch-action: none` css equivalent: because calling
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* `preventDefault()` on a `pointermove` event does not stop native page scrolling
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* and zooming, we also listen for `touchmove` and call `preventDefault()` on it
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* when an interaction (currently `DragPan` handles the event.
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* @param {TouchEvent} event Event.
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* @private
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*/
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MapBrowserEventHandler.prototype.handleTouchMove_ = function (event) {
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// Due to https://github.com/mpizenberg/elm-pep/issues/2, `this.originalPointerMoveEvent_`
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// may not be initialized yet when we get here on a platform without native pointer events.
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var originalEvent = this.originalPointerMoveEvent_;
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if ((!originalEvent || originalEvent.defaultPrevented) &&
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(typeof event.cancelable !== 'boolean' || event.cancelable === true)) {
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event.preventDefault();
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}
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};
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/**
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* @param {PointerEvent} pointerEvent Pointer
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* event.
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* @return {boolean} Is moving.
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* @private
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*/
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MapBrowserEventHandler.prototype.isMoving_ = function (pointerEvent) {
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return (this.dragging_ ||
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Math.abs(pointerEvent.clientX - this.down_.clientX) >
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this.moveTolerance_ ||
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Math.abs(pointerEvent.clientY - this.down_.clientY) > this.moveTolerance_);
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};
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/**
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* Clean up.
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*/
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MapBrowserEventHandler.prototype.disposeInternal = function () {
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if (this.relayedListenerKey_) {
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unlistenByKey(this.relayedListenerKey_);
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this.relayedListenerKey_ = null;
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}
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this.element_.removeEventListener(EventType.TOUCHMOVE, this.boundHandleTouchMove_);
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if (this.pointerdownListenerKey_) {
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unlistenByKey(this.pointerdownListenerKey_);
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this.pointerdownListenerKey_ = null;
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}
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this.dragListenerKeys_.forEach(unlistenByKey);
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this.dragListenerKeys_.length = 0;
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this.element_ = null;
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_super.prototype.disposeInternal.call(this);
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};
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return MapBrowserEventHandler;
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}(Target));
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export default MapBrowserEventHandler;
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//# sourceMappingURL=MapBrowserEventHandler.js.map
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