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See License.txt in the project root for license information.\r\n * IScrollEventManager contentModule Interface Properties\r\n * THIS FILE IS AUTO-GENERATED - MANUAL MODIFICATIONS WILL BE LOST\r\n */\r\n\r\nimport * as Msdyn365 from '@msdyn365-commerce/core';\r\n\r\nexport interface IScrollEventManagerConfig extends Msdyn365.IModuleConfig {\r\n    topOffset?: number;\r\n    bottomOffset?: number;\r\n    events?: IEventsData[];\r\n}\r\n\r\nexport const enum EventsPosition {\r\n    onScreen = 'onScreen',\r\n    onScreenAbove = 'onScreenAbove',\r\n    onScreenBelow = 'onScreenBelow',\r\n    offScreen = 'offScreen',\r\n    offScreenAbove = 'offScreenAbove',\r\n    offScreenBelow = 'offScreenBelow'\r\n}\r\n\r\nexport const enum EventsAction {\r\n    add = 'add',\r\n    remove = 'remove'\r\n}\r\n\r\nexport interface IEventsData {\r\n    position: EventsPosition;\r\n    triggerClass: string;\r\n    offset?: number;\r\n    targetClass: string;\r\n    action: EventsAction;\r\n    actionClass: string;\r\n    bidirectional?: boolean;\r\n}\r\n\r\nexport interface IScrollEventManagerProps<T> extends Msdyn365.IModule<T> {\r\n    config: IScrollEventManagerConfig;\r\n}\r\n","//==============================================================================\r\n// Scroll Event Manager\r\n//\r\n// Applies classes dynamically, based on scroll position\r\n//==============================================================================\r\nimport * as React from 'react';\r\nimport throttle from 'lodash/throttle';\r\n\r\nimport { IDictionary } from '@msdyn365-commerce/core';\r\n\r\nimport { IScrollEventManagerData } from './scroll-event-manager.data';\r\nimport { EventsAction, EventsPosition, IEventsData, IScrollEventManagerProps } from './scroll-event-manager.props.autogenerated';\r\n\r\n//==============================================================================\r\n// INTERFACES AND CONSTANTS\r\n//==============================================================================\r\ninterface Action {\r\n    target: HTMLCollectionOf<Element>;\r\n    action: string;\r\n    className: string;\r\n}\r\n\r\ninterface Extents {\r\n    top: number;\r\n    bottom: number;\r\n}\r\n\r\n// Only vaguely useful enum -- prevents typos and provides a thin isolation layer\r\nconst enum ElementPositions {\r\n    above = 'above',\r\n    below = 'below',\r\n    visible = 'visible',\r\n    missing = 'missing',\r\n}\r\n\r\n//==============================================================================\r\n// CLASS DEFINITION\r\n//==============================================================================\r\n/**\r\n * ScrollEventManager component\r\n * @extends {React.PureComponent<IScrollEventManagerProps<IScrollEventManagerData>>}\r\n */\r\n//==============================================================================\r\nclass ScrollEventManager extends React.PureComponent<IScrollEventManagerProps<IScrollEventManagerData>> {\r\n\r\n    // Current triggered state\r\n    private eventState: boolean[] = [];\r\n\r\n    // Cached list of elements that are the trigger or target of an event\r\n    private elements: IDictionary<HTMLCollectionOf<Element>> = {};\r\n\r\n    // Throttled event handler\r\n    private throttledScrollhandler: () => void;\r\n\r\n    // Copy of the event list\r\n    private eventList: IEventsData[] = [];\r\n\r\n    //==========================================================================\r\n    // PUBLIC METHODS\r\n    //==========================================================================\r\n\r\n    //------------------------------------------------------\r\n    // Constructor\r\n    //------------------------------------------------------\r\n    constructor(props: IScrollEventManagerProps<IScrollEventManagerData>) {\r\n        super(props);\r\n\r\n        // Throttle the event handler to prevent event overloading\r\n        this.throttledScrollhandler = throttle(this._scrollHandler.bind(this), 50);\r\n\r\n        // Copy the supplied event list, adding any extras requested\r\n        this._createEventList(this.props.config.events || []);\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Attach event handler\r\n    //------------------------------------------------------\r\n    public componentDidMount(): void {\r\n        if (process.env.CURRENT_ENVIRONMENT === 'web') {\r\n            window && window.addEventListener && window.addEventListener('scroll', this.throttledScrollhandler);\r\n\r\n            // Trigger any initial events\r\n            this._scrollHandler();\r\n        }\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Detach event handler\r\n    //------------------------------------------------------\r\n    public componentWillUnmount(): void {\r\n        window && window.removeEventListener && window.removeEventListener('scroll', this.throttledScrollhandler);\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Required, but doesn't do anything\r\n    //------------------------------------------------------\r\n    public render(): null {\r\n        return null;\r\n    }\r\n\r\n    //==========================================================================\r\n    // PRIVATE METHODS\r\n    //==========================================================================\r\n\r\n    //------------------------------------------------------\r\n    // Copy the supplied event list, generating extra events\r\n    // for all events flagged as bidirectional.\r\n    //------------------------------------------------------\r\n    private _createEventList(events: IEventsData[]): void {\r\n        const eventOpposites = {\r\n            onScreen: EventsPosition.offScreen,\r\n            onScreenAbove: EventsPosition.offScreenBelow,\r\n            onScreenBelow: EventsPosition.offScreenAbove,\r\n            offScreen: EventsPosition.onScreen,\r\n            offScreenAbove: EventsPosition.onScreenBelow,\r\n            offScreenBelow: EventsPosition.onScreenAbove\r\n        };\r\n\r\n        // Step through the event list\r\n        events.forEach(event => {\r\n\r\n            // Add the primary event\r\n            this.eventList.push(event);\r\n\r\n            // Check to see if we need an opposite event\r\n            if (event.bidirectional) {\r\n                const cloned = { ...event };\r\n\r\n                // Flip the action\r\n                cloned.action = (event.action === EventsAction.add) ? EventsAction.remove : EventsAction.add;\r\n\r\n                // Flip the trigger type\r\n                cloned.position = eventOpposites[event.position];\r\n\r\n                // Add the cloned event\r\n                this.eventList.push(cloned);\r\n            }\r\n        });\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Main top-level functionality: Watch for scroll\r\n    // events, and trigger the appropriate actions when\r\n    // necessary.\r\n    //------------------------------------------------------\r\n    private _scrollHandler(): void {\r\n        const events = this.eventList;\r\n\r\n        if (!events || !events.length) {\r\n            return;\r\n        }\r\n\r\n        // Ensure elements have been cached\r\n        this._getElements(events);\r\n\r\n        // Create a running list of actions, with redundant ones removed.\r\n        // Some will supercede others, so keep a list instead of acting immediately.\r\n        const actionList: IDictionary<Action> = {};\r\n\r\n        // Step through the event list\r\n        events.forEach((event, index) => {\r\n\r\n            // Get the position of the trigger element\r\n            const position = this._getPosition(event.triggerClass, event.offset || 0);\r\n\r\n            // Ensure required elements exist in the DOM, then\r\n            // determine if the new position matches the event trigger\r\n            if ((position !== ElementPositions.missing) && this._isEventTriggered(position, event.position, index)) {\r\n\r\n                // Add the requested action to our list,\r\n                // replacing any other actions that may now be redundant\r\n                this._addAction(actionList, event);\r\n            }\r\n        });\r\n\r\n        // Perform any actions\r\n        this._performActions(actionList);\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Looks for any classes that we haven't tied to\r\n    // elements yet.\r\n    //------------------------------------------------------\r\n    private _getElements(events: IEventsData[]): void {\r\n        if ((typeof document !== 'undefined') && events && events.length) {\r\n\r\n            // Each event entry has two separate selectors (there are 3 classes, but one isn't used as a selector)\r\n            events.forEach(entry => {\r\n                this._addElement(entry.triggerClass);   // This needs to match a single element only (more matches will be ignored)\r\n                this._addElement(entry.targetClass);    // This can match multiple elements\r\n            });\r\n        }\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // For a single className, lookup and cache the element\r\n    // if we haven't already done so.\r\n    //------------------------------------------------------\r\n    private _addElement(selector: string): void {\r\n\r\n        // Check if the element has been located yet\r\n        if (selector && !this.elements[selector]) {\r\n            // Still unknown -- try to find it now\r\n            this.elements[selector] = document.getElementsByClassName(selector);\r\n        }\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Returns the current position of the selected element,\r\n    // relative to the screen.\r\n    //\r\n    // NOTE: Returning an enum would be better TypeScript,\r\n    // but the value is used with objects, which don't play\r\n    // nice with enums.\r\n    //------------------------------------------------------\r\n    private _getPosition(selector: string, offset: number): string {\r\n        if (!selector || !this.elements[selector] || !this.elements[selector].length) {\r\n            return ElementPositions.missing;    // Arbitrary value -- none are correct if elements haven't been loaded yet\r\n        }\r\n\r\n        // Get the element's top and bottom position\r\n        const elementExtents = this._getElementExtents(this.elements[selector][0], offset); // There could be more than one match of the trigger element, but we're ignoring extras\r\n\r\n        // Get the window's top and bottom position\r\n        const windowExtents = this._getWindowExtents();\r\n\r\n        // Compare them for a result\r\n        if (elementExtents.bottom < windowExtents.top) {\r\n            return ElementPositions.above;\r\n        }\r\n\r\n        if (elementExtents.top > windowExtents.bottom) {\r\n            return ElementPositions.below;\r\n        }\r\n\r\n        return ElementPositions.visible;\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Checks a single event definition to see if it has\r\n    // been newly triggered.\r\n    //------------------------------------------------------\r\n    private _isEventTriggered(currentPosition: string, targetPosition: string, index: number): boolean {\r\n\r\n        // Converts between three-state position and Target Position values\r\n        const positionMap: IDictionary<IDictionary<boolean>> = {\r\n            onScreen: {\r\n                visible: true,\r\n            },\r\n            onScreenAbove: {\r\n                visible: true,\r\n                above: true,\r\n            },\r\n            onScreenBelow: {\r\n                visible: true,\r\n                below: true,\r\n            },\r\n            offScreen: {\r\n                above: true,\r\n                below: true,\r\n            },\r\n            offScreenAbove: {\r\n                above: true,\r\n            },\r\n            offScreenBelow: {\r\n                below: true,\r\n            },\r\n        };\r\n\r\n        const isTriggered: boolean = positionMap[targetPosition][currentPosition];\r\n\r\n        // Check for a state change\r\n        if (this.eventState[index] !== isTriggered) {\r\n\r\n            // Update the stored state\r\n            this.eventState[index] = isTriggered;\r\n\r\n            // Determine if we should notify the caller of the change.\r\n            // If we just transitioned into a triggered state, notify (return true).\r\n            // If we just transitioned into a non-triggered state, keep quiet.\r\n            return isTriggered;\r\n        }\r\n\r\n        return false;\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Add an action to our running action list.\r\n    // Overwrites redundant actions.\r\n    //------------------------------------------------------\r\n    private _addAction(actionList: IDictionary<Action>, event: IEventsData): void {\r\n        if (event.targetClass && event.actionClass &&\r\n            this.elements[event.targetClass] && this.elements[event.targetClass].length) {\r\n\r\n            // Unique actions consist of both a selector and class\r\n            const eventIdentifier = `${event.targetClass}-${event.actionClass}`;\r\n\r\n            // Store the event, possibly overwriting other redundant events\r\n            actionList[eventIdentifier] = {\r\n                target: this.elements[event.targetClass],   // There could be more than one, which is valid here.\r\n                action: event.action,\r\n                className: event.actionClass\r\n            };\r\n        }\r\n    }\r\n\r\n    // -----------------------------------------------------\r\n    // Process all of the actions in our action list.\r\n    // -----------------------------------------------------\r\n    private _performActions(actionList: IDictionary<Action>): void {\r\n\r\n        // Step through the action list\r\n        Object.values(actionList).forEach(action => {\r\n\r\n            // Determine the appropriate function\r\n            const actionFunction = (action.action === EventsAction.add) ? 'add' : 'remove';\r\n\r\n            // Allow multiple classes to be added or removed at the same time\r\n            const classList = action.className.split(',').map(entry => entry.trim());\r\n\r\n            // Peform the action\r\n            for (let index = 0; index < action.target.length; index++) {\r\n                action.target[index].classList[actionFunction](...classList);\r\n            }\r\n        });\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Determine the top and bottom coordinates of the\r\n    // viewport.\r\n    //------------------------------------------------------\r\n    private _getWindowExtents(): Extents {\r\n        const topOffset: number = this.props.config.topOffset || 0;\r\n        const bottomOffset: number = this.props.config.bottomOffset || 0;\r\n\r\n        // Get the current scroll position\r\n        // @ts-ignore\r\n        const scrollPos: number = (window.pageYOffset !== undefined) ? window.pageYOffset : window.scrollTop;\r\n\r\n        // Get the viewport height\r\n        const viewportHeight = Math.max(document.documentElement.clientHeight, window.innerHeight || 0);\r\n\r\n        return {\r\n            top: scrollPos + topOffset,\r\n            bottom: scrollPos + viewportHeight - bottomOffset,\r\n        };\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Determine the top and bottom coordinates of the\r\n    // viewport.\r\n    //\r\n    // We'll use the offset to shift the element's location.\r\n    // Logically, it would probably be better to process the\r\n    // offset during the viewport and element comparison,\r\n    // but it's cleaner and simpler here.\r\n    //------------------------------------------------------\r\n    private _getElementExtents(element: Element, offset: number): Extents {\r\n        const top = this._getElementTop(element);\r\n\r\n        return {\r\n            top: top + offset,\r\n            bottom: top + element.clientHeight + offset,\r\n        };\r\n    }\r\n\r\n    //------------------------------------------------------\r\n    // Find the top coordinate of an element, in relation to\r\n    // the page.\r\n    //\r\n    // Adapted from react-animate-on-scroll by dbramwell.\r\n    //------------------------------------------------------\r\n    private _getElementTop(element: Element): number {\r\n        let yPos = 0;\r\n        let elm: (HTMLElement | null) = element as HTMLElement;\r\n\r\n        while (elm && elm.offsetTop !== undefined && elm.clientTop !== undefined) {\r\n            yPos += (elm.offsetTop + elm.clientTop);\r\n            elm = elm.offsetParent as HTMLElement;\r\n        }\r\n\r\n        return yPos;\r\n    }\r\n}\r\n\r\nexport default ScrollEventManager;\r\n","const binding = { modules: {}, dataActions: {} };\n\n    (binding.modules['scroll-event-manager'] = {\n        c: () => require('partner/modules/scroll-event-manager/scroll-event-manager.tsx'),\n        $type: 'contentModule',\n        da: [],\n        \n        iNM: false,\n        ns: '__local__',\n        n: 'scroll-event-manager',\n        p: '__local__',\n        \n        pdp: '',\n        \n        \n        md: 'src/modules/scroll-event-manager'\n    });\n        \n\n        \n    window.__bindings__ = window.__bindings__ || {};\n    window.__bindings__.modules = {\n        ...window.__bindings__.modules || {},\n        ...binding.modules\n    };\n    \n        window.__bindings__.dataActions = {\n        ...window.__bindings__.dataActions || {},\n        ...binding.dataActions\n    };","module.exports = React;"],"names":["EventsPosition","EventsAction","ElementPositions","ScrollEventManager","React","constructor","props","super","eventState","elements","eventList","this","throttledScrollhandler","throttle","_scrollHandler","bind","_createEventList","config","events","componentDidMount","window","addEventListener","componentWillUnmount","removeEventListener","render","eventOpposites","onScreen","offScreen","onScreenAbove","offScreenBelow","onScreenBelow","offScreenAbove","forEach","event","push","bidirectional","cloned","_objectSpread","action","add","remove","position","length","_getElements","actionList","index","_getPosition","triggerClass","offset","missing","_isEventTriggered","_addAction","_performActions","document","entry","_addElement","targetClass","selector","getElementsByClassName","elementExtents","_getElementExtents","windowExtents","_getWindowExtents","bottom","top","above","below","visible","currentPosition","targetPosition","isTriggered","actionClass","target","className","Object","values","actionFunction","classList","split","map","trim","topOffset","bottomOffset","scrollPos","undefined","pageYOffset","scrollTop","Math","max","documentElement","clientHeight","innerHeight","element","_getElementTop","yPos","elm","offsetTop","clientTop","offsetParent","binding","modules","dataActions","c","require","$type","da","iNM","ns","n","p","pdp","md","__bindings__","module","exports"],"sourceRoot":""}