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(what we had for always showing resize handles)\n * /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent)\n */\nexport const isTouch: boolean = typeof window !== 'undefined' && typeof document !== 'undefined' &&\n ( 'ontouchstart' in document\n || 'ontouchstart' in window\n // || !!window.TouchEvent // true on Windows 10 Chrome desktop so don't use this\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n || ((window as any).DocumentTouch && document instanceof (window as any).DocumentTouch)\n || navigator.maxTouchPoints > 0\n // eslint-disable-next-line @typescript-eslint/no-explicit-any\n || (navigator as any).msMaxTouchPoints > 0\n );\n\n// interface TouchCoord {x: number, y: number};\n\nexport class DDTouch {\n /** set to true while we are handling touch dragging, to prevent accepting browser real mouse events (trusted:true) vs our simulated ones (trusted:false) */\n public static touchHandled: boolean;\n public static pointerLeaveTimeout: number;\n}\n\n/**\n* Get the x,y position of a touch event\n*/\n// function getTouchCoords(e: TouchEvent): TouchCoord {\n// return {\n// x: e.changedTouches[0].pageX,\n// y: e.changedTouches[0].pageY\n// };\n// }\n\n/**\n * Simulate a mouse event based on a corresponding touch event\n * @param {Object} e A touch event\n * @param {String} simulatedType The corresponding mouse event\n */\nfunction simulateMouseEvent(e: TouchEvent, simulatedType: string) {\n\n // Ignore multi-touch events\n if (e.touches.length > 1) return;\n\n // Prevent \"Ignored attempt to cancel a touchmove event with cancelable=false\" errors\n if (e.cancelable) e.preventDefault();\n\n // Dispatch the simulated event to the target element\n Utils.simulateMouseEvent(e.changedTouches[0], simulatedType);\n}\n\n/**\n * Simulate a mouse event based on a corresponding Pointer event\n * @param {Object} e A pointer event\n * @param {String} simulatedType The corresponding mouse event\n */\nfunction simulatePointerMouseEvent(e: PointerEvent, simulatedType: string) {\n\n // Prevent \"Ignored attempt to cancel a touchmove event with cancelable=false\" errors\n if (e.cancelable) e.preventDefault();\n\n // Dispatch the simulated event to the target element\n Utils.simulateMouseEvent(e, simulatedType);\n}\n\n\n/**\n * Handle the touchstart events\n * @param {Object} e The widget element's touchstart event\n */\nexport function touchstart(e: TouchEvent): void {\n // Ignore the event if another widget is already being handled\n if (DDTouch.touchHandled) return;\n DDTouch.touchHandled = true;\n\n // Simulate the mouse events\n // simulateMouseEvent(e, 'mouseover');\n // simulateMouseEvent(e, 'mousemove');\n simulateMouseEvent(e, 'mousedown');\n}\n\n/**\n * Handle the touchmove events\n * @param {Object} e The document's touchmove event\n */\nexport function touchmove(e: TouchEvent): void {\n // Ignore event if not handled by us\n if (!DDTouch.touchHandled) return;\n\n simulateMouseEvent(e, 'mousemove');\n}\n\n/**\n * Handle the touchend events\n * @param {Object} e The document's touchend event\n */\nexport function touchend(e: TouchEvent): void {\n\n // Ignore event if not handled\n if (!DDTouch.touchHandled) return;\n\n // cancel delayed leave event when we release on ourself which happens BEFORE we get this!\n if (DDTouch.pointerLeaveTimeout) {\n window.clearTimeout(DDTouch.pointerLeaveTimeout);\n delete DDTouch.pointerLeaveTimeout;\n }\n\n const wasDragging = !!DDManager.dragElement;\n\n // Simulate the mouseup event\n simulateMouseEvent(e, 'mouseup');\n // simulateMouseEvent(event, 'mouseout');\n\n // If the touch interaction did not move, it should trigger a click\n if (!wasDragging) {\n simulateMouseEvent(e, 'click');\n }\n\n // Unset the flag to allow other widgets to inherit the touch event\n DDTouch.touchHandled = false;\n}\n\n/**\n * Note we don't get touchenter/touchleave (which are deprecated)\n * see https://stackoverflow.com/questions/27908339/js-touch-equivalent-for-mouseenter\n * so instead of PointerEvent to still get enter/leave and send the matching mouse event.\n */\nexport function pointerdown(e: PointerEvent): void {\n // console.log(\"pointer down\")\n if (e.pointerType === 'mouse') return;\n (e.target as HTMLElement).releasePointerCapture(e.pointerId) // <- Important!\n}\n\nexport function pointerenter(e: PointerEvent): void {\n // ignore the initial one we get on pointerdown on ourself\n if (!DDManager.dragElement) {\n // console.log('pointerenter ignored');\n return;\n }\n // console.log('pointerenter');\n if (e.pointerType === 'mouse') return;\n simulatePointerMouseEvent(e, 'mouseenter');\n}\n\nexport function pointerleave(e: PointerEvent): void {\n // ignore the leave on ourself we get before releasing the mouse over ourself\n // by delaying sending the event and having the up event cancel us\n if (!DDManager.dragElement) {\n // console.log('pointerleave ignored');\n return;\n }\n if (e.pointerType === 'mouse') return;\n DDTouch.pointerLeaveTimeout = window.setTimeout(() => {\n delete DDTouch.pointerLeaveTimeout;\n // console.log('pointerleave delayed');\n simulatePointerMouseEvent(e, 'mouseleave');\n }, 10);\n}\n\n"]} |