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import {Map} from '../Map';
import {Handler} from '../../core/Handler';
import * as DomEvent from '../../dom/DomEvent';
import {Point} from '../../geometry/Point';
import * as Util from '../../core/Util';
import Browser from '../../core/Browser';
/*
* L.Map.TapHold is used to simulate `contextmenu` event on long hold,
* which otherwise is not fired by mobile Safari.
*/
var tapHoldDelay = 600;
// @namespace Map
// @section Interaction Options
Map.mergeOptions({
// @section Touch interaction options
// @option tapHold: Boolean
// Enables simulation of `contextmenu` event, default is `true` for mobile Safari.
tapHold: Browser.touchNative && Browser.safari && Browser.mobile,
// @option tapTolerance: Number = 15
// The max number of pixels a user can shift his finger during touch
// for it to be considered a valid tap.
tapTolerance: 15
});
export var TapHold = Handler.extend({
addHooks: function () {
DomEvent.on(this._map._container, 'touchstart', this._onDown, this);
},
removeHooks: function () {
DomEvent.off(this._map._container, 'touchstart', this._onDown, this);
},
_onDown: function (e) {
clearTimeout(this._holdTimeout);
if (e.touches.length !== 1) { return; }
var first = e.touches[0];
this._startPos = this._newPos = new Point(first.clientX, first.clientY);
this._holdTimeout = setTimeout(Util.bind(function () {
this._cancel();
if (!this._isTapValid()) { return; }
// prevent simulated mouse events https://w3c.github.io/touch-events/#mouse-events
DomEvent.on(document, 'touchend', DomEvent.preventDefault);
DomEvent.on(document, 'touchend touchcancel', this._cancelClickPrevent);
this._simulateEvent('contextmenu', first);
}, this), tapHoldDelay);
DomEvent.on(document, 'touchend touchcancel contextmenu', this._cancel, this);
DomEvent.on(document, 'touchmove', this._onMove, this);
},
_cancelClickPrevent: function cancelClickPrevent() {
DomEvent.off(document, 'touchend', DomEvent.preventDefault);
DomEvent.off(document, 'touchend touchcancel', cancelClickPrevent);
},
_cancel: function () {
clearTimeout(this._holdTimeout);
DomEvent.off(document, 'touchend touchcancel contextmenu', this._cancel, this);
DomEvent.off(document, 'touchmove', this._onMove, this);
},
_onMove: function (e) {
var first = e.touches[0];
this._newPos = new Point(first.clientX, first.clientY);
},
_isTapValid: function () {
return this._newPos.distanceTo(this._startPos) <= this._map.options.tapTolerance;
},
_simulateEvent: function (type, e) {
var simulatedEvent = new MouseEvent(type, {
bubbles: true,
cancelable: true,
view: window,
// detail: 1,
screenX: e.screenX,
screenY: e.screenY,
clientX: e.clientX,
clientY: e.clientY,
// button: 2,
// buttons: 2
});
simulatedEvent._simulated = true;
e.target.dispatchEvent(simulatedEvent);
}
});
// @section Handlers
// @property tapHold: Handler
// Long tap handler to simulate `contextmenu` event (useful in mobile Safari).
Map.addInitHook('addHandler', 'tapHold', TapHold);
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