Initial commit

Lts/Tools/ArAssetsV3/node_modules/leaflet/src/dom/DomEvent.DoubleTap.js

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+import * as Browser from '../core/Browser';
+import {_pointersCount} from './DomEvent.Pointer';
+
+/*
+ * Extends the event handling code with double tap support for mobile browsers.
+ */
+
+var _touchstart = Browser.msPointer ? 'MSPointerDown' : Browser.pointer ? 'pointerdown' : 'touchstart';
+var _touchend = Browser.msPointer ? 'MSPointerUp' : Browser.pointer ? 'pointerup' : 'touchend';
+var _pre = '_leaflet_';
+
+// inspired by Zepto touch code by Thomas Fuchs
+export function addDoubleTapListener(obj, handler, id) {
+	var last, touch,
+	    doubleTap = false,
+	    delay = 250;
+
+	function onTouchStart(e) {
+		var count;
+
+		if (Browser.pointer) {
+			if ((!Browser.edge) || e.pointerType === 'mouse') { return; }
+			count = _pointersCount;
+		} else {
+			count = e.touches.length;
+		}
+
+		if (count > 1) { return; }
+
+		var now = Date.now(),
+		    delta = now - (last || now);
+
+		touch = e.touches ? e.touches[0] : e;
+		doubleTap = (delta > 0 && delta <= delay);
+		last = now;
+	}
+
+	function onTouchEnd(e) {
+		if (doubleTap && !touch.cancelBubble) {
+			if (Browser.pointer) {
+				if ((!Browser.edge) || e.pointerType === 'mouse') { return; }
+				// work around .type being readonly with MSPointer* events
+				var newTouch = {},
+				    prop, i;
+
+				for (i in touch) {
+					prop = touch[i];
+					newTouch[i] = prop && prop.bind ? prop.bind(touch) : prop;
+				}
+				touch = newTouch;
+			}
+			touch.type = 'dblclick';
+			handler(touch);
+			last = null;
+		}
+	}
+
+	obj[_pre + _touchstart + id] = onTouchStart;
+	obj[_pre + _touchend + id] = onTouchEnd;
+	obj[_pre + 'dblclick' + id] = handler;
+
+	obj.addEventListener(_touchstart, onTouchStart, false);
+	obj.addEventListener(_touchend, onTouchEnd, false);
+
+	// On some platforms (notably, chrome<55 on win10 + touchscreen + mouse),
+	// the browser doesn't fire touchend/pointerup events but does fire
+	// native dblclicks. See #4127.
+	// Edge 14 also fires native dblclicks, but only for pointerType mouse, see #5180.
+	obj.addEventListener('dblclick', handler, false);
+
+	return this;
+}
+
+export function removeDoubleTapListener(obj, id) {
+	var touchstart = obj[_pre + _touchstart + id],
+	    touchend = obj[_pre + _touchend + id],
+	    dblclick = obj[_pre + 'dblclick' + id];
+
+	obj.removeEventListener(_touchstart, touchstart, false);
+	obj.removeEventListener(_touchend, touchend, false);
+	if (!Browser.edge) {
+		obj.removeEventListener('dblclick', dblclick, false);
+	}
+
+	return this;
+}