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Set in the ion-gesture component.\n     */\n    GestureController.prototype.createBlocker = function (opts) {\n        if (opts === void 0) { opts = {}; }\n        return new BlockerDelegate(this, this.newID(), opts.disable, !!opts.disableScroll);\n    };\n    GestureController.prototype.start = function (gestureName, id, priority) {\n        if (!this.canStart(gestureName)) {\n            this.requestedStart.delete(id);\n            return false;\n        }\n        this.requestedStart.set(id, priority);\n        return true;\n    };\n    GestureController.prototype.capture = function (gestureName, id, priority) {\n        if (!this.start(gestureName, id, priority)) {\n            return false;\n        }\n        var requestedStart = this.requestedStart;\n        var maxPriority = -10000;\n        requestedStart.forEach(function (value) {\n            maxPriority = Math.max(maxPriority, value);\n        });\n        if (maxPriority === priority) {\n            this.capturedId = id;\n            requestedStart.clear();\n            var event = new CustomEvent('ionGestureCaptured', { detail: { gestureName: gestureName } });\n            document.dispatchEvent(event);\n            return true;\n        }\n        requestedStart.delete(id);\n        return false;\n    };\n    GestureController.prototype.release = function (id) {\n        this.requestedStart.delete(id);\n        if (this.capturedId === id) {\n            this.capturedId = undefined;\n        }\n    };\n    GestureController.prototype.disableGesture = function (gestureName, id) {\n        var set = this.disabledGestures.get(gestureName);\n        if (set === undefined) {\n            set = new Set();\n            this.disabledGestures.set(gestureName, set);\n        }\n        set.add(id);\n    };\n    GestureController.prototype.enableGesture = function (gestureName, id) {\n        var set = this.disabledGestures.get(gestureName);\n        if (set !== undefined) {\n            set.delete(id);\n        }\n    };\n    GestureController.prototype.disableScroll = function (id) {\n        this.disabledScroll.add(id);\n        if (this.disabledScroll.size === 1) {\n            document.body.classList.add(BACKDROP_NO_SCROLL);\n        }\n    };\n    GestureController.prototype.enableScroll = function (id) {\n        this.disabledScroll.delete(id);\n        if (this.disabledScroll.size === 0) {\n            document.body.classList.remove(BACKDROP_NO_SCROLL);\n        }\n    };\n    GestureController.prototype.canStart = function (gestureName) {\n        if (this.capturedId !== undefined) {\n            // a gesture already captured\n            return false;\n        }\n        if (this.isDisabled(gestureName)) {\n            return false;\n        }\n        return true;\n    };\n    GestureController.prototype.isCaptured = function () {\n        return this.capturedId !== undefined;\n    };\n    GestureController.prototype.isScrollDisabled = function () {\n        return this.disabledScroll.size > 0;\n    };\n    GestureController.prototype.isDisabled = function (gestureName) {\n        var disabled = this.disabledGestures.get(gestureName);\n        if (disabled && disabled.size > 0) {\n            return true;\n        }\n        return false;\n    };\n    GestureController.prototype.newID = function () {\n        this.gestureId++;\n        return this.gestureId;\n    };\n    return GestureController;\n}());\nvar GestureDelegate = /** @class */ (function () {\n    function GestureDelegate(ctrl, id, name, priority, disableScroll) {\n        this.id = id;\n        this.name = name;\n        this.disableScroll = disableScroll;\n        this.priority = priority * 1000000 + id;\n        this.ctrl = ctrl;\n    }\n    GestureDelegate.prototype.canStart = function () {\n        if (!this.ctrl) {\n            return false;\n        }\n        return this.ctrl.canStart(this.name);\n    };\n    GestureDelegate.prototype.start = function () {\n        if (!this.ctrl) {\n            return false;\n        }\n        return this.ctrl.start(this.name, this.id, this.priority);\n    };\n    GestureDelegate.prototype.capture = function () {\n        if (!this.ctrl) {\n            return false;\n        }\n        var captured = this.ctrl.capture(this.name, this.id, this.priority);\n        if (captured && this.disableScroll) {\n            this.ctrl.disableScroll(this.id);\n        }\n        return captured;\n    };\n    GestureDelegate.prototype.release = function () {\n        if (this.ctrl) {\n            this.ctrl.release(this.id);\n            if (this.disableScroll) {\n                this.ctrl.enableScroll(this.id);\n            }\n        }\n    };\n    GestureDelegate.prototype.destroy = function () {\n        this.release();\n        this.ctrl = undefined;\n    };\n    return GestureDelegate;\n}());\nvar BlockerDelegate = /** @class */ (function () {\n    function BlockerDelegate(ctrl, id, disable, disableScroll) {\n        this.id = id;\n        this.disable = disable;\n        this.disableScroll = disableScroll;\n        this.ctrl = ctrl;\n    }\n    BlockerDelegate.prototype.block = function () {\n        if (!this.ctrl) {\n            return;\n        }\n        if (this.disable) {\n            for (var _i = 0, _a = this.disable; _i < _a.length; _i++) {\n                var gesture = _a[_i];\n                this.ctrl.disableGesture(gesture, this.id);\n            }\n        }\n        if (this.disableScroll) {\n            this.ctrl.disableScroll(this.id);\n        }\n    };\n    BlockerDelegate.prototype.unblock = function () {\n        if (!this.ctrl) {\n            return;\n        }\n        if (this.disable) {\n            for (var _i = 0, _a = this.disable; _i < _a.length; _i++) {\n                var gesture = _a[_i];\n                this.ctrl.enableGesture(gesture, this.id);\n            }\n        }\n        if (this.disableScroll) {\n            this.ctrl.enableScroll(this.id);\n        }\n    };\n    BlockerDelegate.prototype.destroy = function () {\n        this.unblock();\n        this.ctrl = undefined;\n    };\n    return BlockerDelegate;\n}());\nvar BACKDROP_NO_SCROLL = 'backdrop-no-scroll';\nvar GESTURE_CONTROLLER = new GestureController();\nvar addEventListener = function (el, eventName, callback, opts) {\n    // use event listener options when supported\n    // otherwise it's just a boolean for the \"capture\" arg\n    var listenerOpts = supportsPassive(el) ? {\n        'capture': !!opts.capture,\n        'passive': !!opts.passive,\n    } : !!opts.capture;\n    var add;\n    var remove;\n    if (el['__zone_symbol__addEventListener']) {\n        add = '__zone_symbol__addEventListener';\n        remove = '__zone_symbol__removeEventListener';\n    }\n    else {\n        add = 'addEventListener';\n        remove = 'removeEventListener';\n    }\n    el[add](eventName, callback, listenerOpts);\n    return function () {\n        el[remove](eventName, callback, listenerOpts);\n    };\n};\nvar supportsPassive = function (node) {\n    if (_sPassive === undefined) {\n        try {\n            var opts = Object.defineProperty({}, 'passive', {\n                get: function () {\n                    _sPassive = true;\n                }\n            });\n            node.addEventListener('optsTest', function () { return; }, opts);\n        }\n        catch (e) {\n            _sPassive = false;\n        }\n    }\n    return !!_sPassive;\n};\nvar _sPassive;\nvar MOUSE_WAIT = 2000;\nvar createPointerEvents = function (el, pointerDown, pointerMove, pointerUp, options) {\n    var rmTouchStart;\n    var rmTouchMove;\n    var rmTouchEnd;\n    var rmTouchCancel;\n    var rmMouseStart;\n    var rmMouseMove;\n    var rmMouseUp;\n    var lastTouchEvent = 0;\n    var handleTouchStart = function (ev) {\n        lastTouchEvent = Date.now() + MOUSE_WAIT;\n        if (!pointerDown(ev)) {\n            return;\n        }\n        if (!rmTouchMove && pointerMove) {\n            rmTouchMove = addEventListener(el, 'touchmove', pointerMove, options);\n        }\n        if (!rmTouchEnd) {\n            rmTouchEnd = addEventListener(el, 'touchend', handleTouchEnd, options);\n        }\n        if (!rmTouchCancel) {\n            rmTouchCancel = addEventListener(el, 'touchcancel', handleTouchEnd, options);\n        }\n    };\n    var handleMouseDown = function (ev) {\n        if (lastTouchEvent > Date.now()) {\n            return;\n        }\n        if (!pointerDown(ev)) {\n            return;\n        }\n        if (!rmMouseMove && pointerMove) {\n            rmMouseMove = addEventListener(getDocument(el), 'mousemove', pointerMove, options);\n        }\n        if (!rmMouseUp) {\n            rmMouseUp = addEventListener(getDocument(el), 'mouseup', handleMouseUp, options);\n        }\n    };\n    var handleTouchEnd = function (ev) {\n        stopTouch();\n        if (pointerUp) {\n            pointerUp(ev);\n        }\n    };\n    var handleMouseUp = function (ev) {\n        stopMouse();\n        if (pointerUp) {\n            pointerUp(ev);\n        }\n    };\n    var stopTouch = function () {\n        if (rmTouchMove) {\n            rmTouchMove();\n        }\n        if (rmTouchEnd) {\n            rmTouchEnd();\n        }\n        if (rmTouchCancel) {\n            rmTouchCancel();\n        }\n        rmTouchMove = rmTouchEnd = rmTouchCancel = undefined;\n    };\n    var stopMouse = function () {\n        if (rmMouseMove) {\n            rmMouseMove();\n        }\n        if (rmMouseUp) {\n            rmMouseUp();\n        }\n        rmMouseMove = rmMouseUp = undefined;\n    };\n    var stop = function () {\n        stopTouch();\n        stopMouse();\n    };\n    var setDisabled = function (disabled) {\n        if (disabled) {\n            if (rmTouchStart) {\n                rmTouchStart();\n            }\n            if (rmMouseStart) {\n                rmMouseStart();\n            }\n            rmTouchStart = rmMouseStart = undefined;\n            stop();\n        }\n        else {\n            if (!rmTouchStart) {\n                rmTouchStart = addEventListener(el, 'touchstart', handleTouchStart, options);\n            }\n            if (!rmMouseStart) {\n                rmMouseStart = addEventListener(el, 'mousedown', handleMouseDown, options);\n            }\n        }\n    };\n    var destroy = function () {\n        setDisabled(true);\n        pointerUp = pointerMove = pointerDown = undefined;\n    };\n    return {\n        setDisabled: setDisabled,\n        stop: stop,\n        destroy: destroy\n    };\n};\nvar getDocument = function (node) {\n    return node instanceof Document ? node : node.ownerDocument;\n};\nvar createPanRecognizer = function (direction, thresh, maxAngle) {\n    var radians = maxAngle * (Math.PI / 180);\n    var isDirX = direction === 'x';\n    var maxCosine = Math.cos(radians);\n    var threshold = thresh * thresh;\n    var startX = 0;\n    var startY = 0;\n    var dirty = false;\n    var isPan = 0;\n    return {\n        start: function (x, y) {\n            startX = x;\n            startY = y;\n            isPan = 0;\n            dirty = true;\n        },\n        detect: function (x, y) {\n            if (!dirty) {\n                return false;\n            }\n            var deltaX = (x - startX);\n            var deltaY = (y - startY);\n            var distance = deltaX * deltaX + deltaY * deltaY;\n            if (distance < threshold) {\n                return false;\n            }\n            var hypotenuse = Math.sqrt(distance);\n            var cosine = (isDirX ? deltaX : deltaY) / hypotenuse;\n            if (cosine > maxCosine) {\n                isPan = 1;\n            }\n            else if (cosine < -maxCosine) {\n                isPan = -1;\n            }\n            else {\n                isPan = 0;\n            }\n            dirty = false;\n            return true;\n        },\n        isGesture: function () {\n            return isPan !== 0;\n        },\n        getDirection: function () {\n            return isPan;\n        }\n    };\n};\nvar createGesture = function (config) {\n    var hasCapturedPan = false;\n    var hasStartedPan = false;\n    var hasFiredStart = true;\n    var isMoveQueued = false;\n    var finalConfig = Object.assign({ disableScroll: false, direction: 'x', gesturePriority: 0, passive: true, maxAngle: 40, threshold: 10 }, config);\n    var canStart = finalConfig.canStart;\n    var onWillStart = finalConfig.onWillStart;\n    var onStart = finalConfig.onStart;\n    var onEnd = finalConfig.onEnd;\n    var notCaptured = finalConfig.notCaptured;\n    var onMove = finalConfig.onMove;\n    var threshold = finalConfig.threshold;\n    var detail = {\n        type: 'pan',\n        startX: 0,\n        startY: 0,\n        startTimeStamp: 0,\n        currentX: 0,\n        currentY: 0,\n        velocityX: 0,\n        velocityY: 0,\n        deltaX: 0,\n        deltaY: 0,\n        timeStamp: 0,\n        event: undefined,\n        data: undefined\n    };\n    var pan = createPanRecognizer(finalConfig.direction, finalConfig.threshold, finalConfig.maxAngle);\n    var gesture = GESTURE_CONTROLLER.createGesture({\n        name: config.gestureName,\n        priority: config.gesturePriority,\n        disableScroll: config.disableScroll\n    });\n    var pointerDown = function (ev) {\n        var timeStamp = now(ev);\n        if (hasStartedPan || !hasFiredStart) {\n            return false;\n        }\n        updateDetail(ev, detail);\n        detail.startX = detail.currentX;\n        detail.startY = detail.currentY;\n        detail.startTimeStamp = detail.timeStamp = timeStamp;\n        detail.velocityX = detail.velocityY = detail.deltaX = detail.deltaY = 0;\n        detail.event = ev;\n        // Check if gesture can start\n        if (canStart && canStart(detail) === false) {\n            return false;\n        }\n        // Release fallback\n        gesture.release();\n        // Start gesture\n        if (!gesture.start()) {\n            return false;\n        }\n        hasStartedPan = true;\n        if (threshold === 0) {\n            return tryToCapturePan();\n        }\n        pan.start(detail.startX, detail.startY);\n        return true;\n    };\n    var pointerMove = function (ev) {\n        // fast path, if gesture is currently captured\n        // do minimum job to get user-land even dispatched\n        if (hasCapturedPan) {\n            if (!isMoveQueued && hasFiredStart) {\n                isMoveQueued = true;\n                calcGestureData(detail, ev);\n                writeTask(fireOnMove);\n            }\n            return;\n        }\n        // gesture is currently being detected\n        calcGestureData(detail, ev);\n        if (pan.detect(detail.currentX, detail.currentY)) {\n            if (!pan.isGesture() || !tryToCapturePan()) {\n                abortGesture();\n            }\n        }\n    };\n    var fireOnMove = function () {\n        // Since fireOnMove is called inside a RAF, onEnd() might be called,\n        // we must double check hasCapturedPan\n        if (!hasCapturedPan) {\n            return;\n        }\n        isMoveQueued = false;\n        if (onMove) {\n            onMove(detail);\n        }\n    };\n    var tryToCapturePan = function () {\n        if (gesture && !gesture.capture()) {\n            return false;\n        }\n        hasCapturedPan = true;\n        hasFiredStart = false;\n        // reset start position since the real user-land event starts here\n        // If the pan detector threshold is big, not resetting the start position\n        // will cause a jump in the animation equal to the detector threshold.\n        // the array of positions used to calculate the gesture velocity does not\n        // need to be cleaned, more points in the positions array always results in a\n        // more accurate value of the velocity.\n        detail.startX = detail.currentX;\n        detail.startY = detail.currentY;\n        detail.startTimeStamp = detail.timeStamp;\n        if (onWillStart) {\n            onWillStart(detail).then(fireOnStart);\n        }\n        else {\n            fireOnStart();\n        }\n        return true;\n    };\n    var fireOnStart = function () {\n        if (onStart) {\n            onStart(detail);\n        }\n        hasFiredStart = true;\n    };\n    var reset = function () {\n        hasCapturedPan = false;\n        hasStartedPan = false;\n        isMoveQueued = false;\n        hasFiredStart = true;\n        gesture.release();\n    };\n    // END *************************\n    var pointerUp = function (ev) {\n        var tmpHasCaptured = hasCapturedPan;\n        var tmpHasFiredStart = hasFiredStart;\n        reset();\n        if (!tmpHasFiredStart) {\n            return;\n        }\n        calcGestureData(detail, ev);\n        // Try to capture press\n        if (tmpHasCaptured) {\n            if (onEnd) {\n                onEnd(detail);\n            }\n            return;\n        }\n        // Not captured any event\n        if (notCaptured) {\n            notCaptured(detail);\n        }\n    };\n    var pointerEvents = createPointerEvents(finalConfig.el, pointerDown, pointerMove, pointerUp, {\n        capture: false,\n    });\n    var abortGesture = function () {\n        reset();\n        pointerEvents.stop();\n        if (notCaptured) {\n            notCaptured(detail);\n        }\n    };\n    return {\n        setDisabled: function (disabled) {\n            if (disabled && hasCapturedPan) {\n                pointerUp(undefined);\n            }\n            pointerEvents.setDisabled(disabled);\n        },\n        destroy: function () {\n            gesture.destroy();\n            pointerEvents.destroy();\n        }\n    };\n};\nvar calcGestureData = function (detail, ev) {\n    if (!ev) {\n        return;\n    }\n    var prevX = detail.currentX;\n    var prevY = detail.currentY;\n    var prevT = detail.timeStamp;\n    updateDetail(ev, detail);\n    var currentX = detail.currentX;\n    var currentY = detail.currentY;\n    var timestamp = detail.timeStamp = now(ev);\n    var timeDelta = timestamp - prevT;\n    if (timeDelta > 0 && timeDelta < 100) {\n        var velocityX = (currentX - prevX) / timeDelta;\n        var velocityY = (currentY - prevY) / timeDelta;\n        detail.velocityX = velocityX * 0.7 + detail.velocityX * 0.3;\n        detail.velocityY = velocityY * 0.7 + detail.velocityY * 0.3;\n    }\n    detail.deltaX = currentX - detail.startX;\n    detail.deltaY = currentY - detail.startY;\n    detail.event = ev;\n};\nvar updateDetail = function (ev, detail) {\n    // get X coordinates for either a mouse click\n    // or a touch depending on the given event\n    var x = 0;\n    var y = 0;\n    if (ev) {\n        var changedTouches = ev.changedTouches;\n        if (changedTouches && changedTouches.length > 0) {\n            var touch = changedTouches[0];\n            x = touch.clientX;\n            y = touch.clientY;\n        }\n        else if (ev.pageX !== undefined) {\n            x = ev.pageX;\n            y = ev.pageY;\n        }\n    }\n    detail.currentX = x;\n    detail.currentY = y;\n};\nvar now = function (ev) {\n    return ev.timeStamp || Date.now();\n};\nexport { GESTURE_CONTROLLER, createGesture };\n"],"sourceRoot":""}