toast.ts

import { Component, Property, ChildProperty, INotifyPropertyChanged, NotifyPropertyChanges, Animation, createElement, animationMode, initializeCSPTemplate } from '@syncfusion/ej2-base';
import { Browser, isNullOrUndefined as isNOU, getUniqueID, formatUnit, EventHandler, KeyboardEventArgs } from '@syncfusion/ej2-base';
import { EmitType, Collection, Complex, setStyleAttribute, Event, Effect, detach, AnimationModel, L10n } from '@syncfusion/ej2-base';
import { attributes, extend, closest, compile as templateCompiler, classList, BaseEventArgs, isUndefined } from '@syncfusion/ej2-base';
import { SwipeEventArgs, Touch, isBlazor, SanitizeHtmlHelper, removeClass } from '@syncfusion/ej2-base';
import { ButtonModel, Button } from '@syncfusion/ej2-buttons';
import { getZindexPartial } from '@syncfusion/ej2-popups';
import { ToastModel, ButtonModelPropsModel, ToastPositionModel } from './toast-model';
import { ToastAnimationsModel, ToastAnimationSettingsModel } from './toast-model';

/**
 * Provides information about a SanitizeSelectors.
 */
export interface SanitizeSelectors {
    /** Returns the tags. */
    tags?: string[]
    /** Returns the attributes. */
    attributes?: SanitizeRemoveAttrs[]
}

/**
 * Provides information about a BeforeSanitizeHtml event.
 */
export interface BeforeSanitizeHtmlArgs {
    /** Illustrates whether the current action needs to be prevented or not. */
    cancel?: boolean
    /** It is a callback function and executed it before our inbuilt action. It should return HTML as a string.
     *
     * @function
     * @param {string} value - Returns the value.
     * @returns {string}
     */
    // eslint-disable-next-line
  helper?: Function
    /** Returns the selectors object which carrying both tags and attributes selectors to block list of cross-site scripting attack.
     *  Also possible to modify the block list in this event.
     */
    selectors?: SanitizeSelectors
}

/**
 * Provides information about a SanitizeRemoveAttributes.
 */
export interface SanitizeRemoveAttrs {
    /** Defines the attribute name to sanitize */
    attribute?: string
    /** Defines the selector that sanitize the specified attributes within the selector */
    selector?: string
}

/**
 * Specifies the options for positioning the Toast in Y axis.
 */
export type PositionY = 'Top' | 'Bottom';


/**
 * Specifies the direction for the Toast progressBar.
 */
export type ProgressDirectionType  = 'Rtl' | 'Ltr';

/**
 * Specifies the options for positioning the Toast in X axis.
 */
export type PositionX = 'Left' | 'Right' | 'Center';

/**
 * Specifies the event arguments of Toast click.
 */
export interface ToastClickEventArgs extends BaseEventArgs {
    /** Defines the Toast element. */
    element: HTMLElement
    /**
     * Defines the Toast object.
     *
     * @deprecated
     */
    toastObj?: Toast
    /** Defines the prevent action for Toast click event. */
    cancel: boolean
    /** Defines the close action for click or tab on the Toast. */
    clickToClose: boolean
    /** Defines the current event object. */
    originalEvent: Event
}

/**
 * Specifies the event arguments of Toast before open.
 */
export interface ToastBeforeOpenArgs extends BaseEventArgs {
    /**
     * Defines the Toast object.
     *
     * @deprecated
     */
    toastObj?: Toast
    /** Defines current Toast model properties as options. */
    options?: ToastModel
    /** Defines the Toast element. */
    element: HTMLElement
    /** Defines the prevent action for before opening toast. */
    cancel: boolean
}

/**
 * Specifies the event arguments of Toast before close.
 */
export interface ToastBeforeCloseArgs extends BaseEventArgs {
    /** Defines current Toast model properties as options. */
    options?: ToastModel
    /** Defines the Toast element. */
    element: HTMLElement
    /** Defines the prevent action for before closing toast. */
    cancel: boolean
    /** Defines the interaction type. */
    type: string
    /** Defines the Toast container element. */
    toastContainer: HTMLElement
}


/**
 * Toast Collection model
 *
 * @hidden
 */
export interface CollectionToast extends ToastModel {
    /**
     * Element of the current toast
     */
    element?: HTMLElement[]
}

/**
 * Specifies the event arguments of Toast open.
 */
export interface ToastOpenArgs extends BaseEventArgs {
    /**
     * Defines the Toast object.
     *
     * @deprecated
     */
    toastObj?: Toast
    /** Defines current Toast model properties as options. */
    options?: ToastModel
    /** Defines the Toast element. */
    element: HTMLElement
}

/**
 * Specifies the event arguments of Toast close.
 */
export interface ToastCloseArgs extends BaseEventArgs {
    /** Defines the Toast container element. */
    toastContainer: HTMLElement
    /** Defines current Toast model properties as options. */
    options?: ToastModel
    /**
     * Defines the Toast object.
     *
     * @deprecated
     */
    toastObj?: Toast
}

// eslint-disable-next-line
interface ToastOffsetPosition {
    left: number
    top: number
}

interface Progressbar {
    maxHideTime: number
    intervalId: number
    timeOutId: number
    hideEta: number
    element: HTEle
    progressEle: HTEle
}

type HTEle = HTMLElement;

const ROOT: string = 'e-toast';
const CONTAINER: string = 'e-toast-container';
const TITLE: string = 'e-toast-title';
const WIDTHFULL: string = 'e-toast-full-width';
const CONTENT: string = 'e-toast-content';
const MESSAGE: string = 'e-toast-message';
const ICON: string = 'e-toast-icon';
const PROGRESS: string = 'e-toast-progress';
const ACTIOBUTTONS: string = 'e-toast-actions';
const CLOSEBTN: string = 'e-toast-close-icon';
const RTL: string = 'e-rtl';
// eslint-disable-next-line
const TOAST_REF_ELEMENT: string = 'e-toast-ref-element';
const TOAST_BLAZOR_HIDDEN: string = 'e-blazor-toast-hidden';

/**
 * An object that is used to configure the Toast X Y positions.
 */
export class ToastPosition extends ChildProperty<ToastPosition> {
    /**
     * Specifies the position of the Toast notification with respect to the target container's left edge.
     *
     * @default 'Left'
     * @aspType string
     * @blazorType string
     */
    @Property('Left')
    public X: PositionX | number | string;
    /* eslint-enable */

    /**
     * Specifies the position of the Toast notification with respect to the target container's top edge.
     *
     * @default 'Top'
     * @aspType string
     * @blazorType string
     */
    @Property('Top')
    public Y: PositionY | number | string;
    /* eslint-enable */
}

/**
 * An object that is used to configure the action button model properties and event.
 */
export class ButtonModelProps extends ChildProperty<ButtonModelProps> {
    /**
     * Specifies the Button component model properties to render the Toast action buttons.
     * ```html
     * <div id="element"> </div>
     * ```
     * ```typescript
     * let toast: Toast =  new Toast({
     *      buttons:
     *      [{
     *         model: { content:`Button1`, cssClass: `e-success` }
     *      }]
     * });
     * toast.appendTo('#element');
     * ```
     *
     * @default null
     */
    @Property(null)
    public model: ButtonModel;

    /**
     * Specifies the click event binding of action buttons created within Toast.
     *
     * @event 'event'
     * @blazorProperty 'Clicked'
     * @blazorType Microsoft.AspNetCore.Components.Web.MouseEventArgs
     */
    @Property(null)
    public click: EmitType<Event>;
}

/**
 * An object that is used to configure the animation object of Toast.
 */
export class ToastAnimations extends ChildProperty<ToastAnimations> {
    /**
     * Specifies the type of animation.
     *
     * @default 'FadeIn'
     * @aspType string
     */
    @Property('FadeIn')
    public effect: Effect;
    /**
     * Specifies the duration to animate.
     *
     * @default 600
     */
    @Property(600)
    public duration: number;
    /**
     * Specifies the animation timing function.
     *
     * @default 'ease'
     */
    @Property('ease')
    public easing: string;
}

/**
 * An object that is used to configure the show/hide animation settings of Toast.
 */
export class ToastAnimationSettings extends ChildProperty<ToastAnimationSettings> {
    /**
     * Specifies the animation to appear while showing the Toast.
     *
     * @default { effect: 'FadeIn', duration: 600, easing: 'ease' }
     */
    @Complex<ToastAnimationsModel>({ effect: 'FadeIn', duration: 600, easing: 'ease' }, ToastAnimations)
    public show: ToastAnimationsModel;
    /**
     * Specifies the animation to appear while hiding the Toast.
     *
     * @default { effect: 'FadeOut', duration: 600, easing: 'ease' }
     */
    @Complex<ToastAnimationsModel>({ effect: 'FadeOut', duration: 600, easing: 'ease' }, ToastAnimations)
    public hide: ToastAnimationsModel;
}

/**
 * The Toast is a notification pop-up that showing on desired position which can provide an information to the user.
 * ```html
 * <div id="toast"/>
 * <script>
 *   var toastObj = new Toast();
 *   toastObj.appendTo("#toast");
 * </script>
 * ```
 */
@NotifyPropertyChanges
export class Toast extends Component<HTMLElement> implements INotifyPropertyChanged {

    private toastContainer: HTEle;
    private toastEle: HTEle;
    private progressBarEle: HTEle;
    private intervalId: number[];
    private progressObj: Progressbar[];
    private contentTemplate: HTEle;
    private toastTemplate: HTEle;
    private customPosition: boolean;
    // eslint-disable-next-line
  private isDevice: Boolean;
    private innerEle: Node;
    private toastCollection: CollectionToast[] = [];
    private l10n: L10n;
    private refElement: HTMLElement;
    private initRenderClass: string;
    public needsID: boolean;

    /**
     * Initializes a new instance of the Toast class.
     *
     * @param {ToastModel} options  - Specifies Toast model properties as options.
     * @param {HTMLElement} element  - Specifies the element that is rendered as a Toast.
     */
    constructor(options?: ToastModel, element?: HTMLElement) {
        super(options, element);
        this.needsID = true;
    }

    /**
     * Specifies the width of the Toast in pixels/numbers/percentage. Number value is considered as pixels.
     * In mobile devices, default width is considered as `100%`.
     *
     * @default '300'
     * @blazorType string
     */
    @Property('300px')
    public width: string | number;

    /**
     * Specifies the height of the Toast in pixels/number/percentage. Number value is considered as pixels.
     *
     * @default 'auto'
     * @blazorType string
     */
    @Property('auto')
    public height: string | number;

    /**
     * Specifies the title to be displayed on the Toast.
     * Accepts selectors, string values and HTML elements.
     *
     * @default null
     * @aspType string
     */
    @Property(null)
    public title: string | Function;

    /**
     * Specifies the content to be displayed on the Toast.
     * Accepts selectors, string values and HTML elements.
     *
     * @default null
     * @blazorType string
     * @aspType string
     */
    @Property(null)
    public content: string | HTMLElement | Function;

    /**
     * Defines whether to allow the cross-scripting site or not.
     *
     * @default true
     */
    @Property(true)
    public enableHtmlSanitizer: boolean;

    /**
     * Defines CSS classes to specify an icon for the Toast which is to be displayed at top left corner of the Toast.
     *
     * @default null
     */
    @Property(null)
    public icon: string;

    /**
     * Defines single/multiple classes (separated by space) to be used for customization of Toast.
     *
     * @default null
     */
    @Property(null)
    public cssClass: string;

    /**
     * Specifies the HTML element/element ID as a string that can be displayed as a Toast.
     * The given template is taken as preference to render the Toast, even if the built-in properties such as title and content are defined.
     *
     * {% codeBlock src='toast/template/index.md' %}{% endcodeBlock %}
     *
     * @default null
     * @aspType string
     */
    @Property(null)
    public template: string | Function;

    /**
     * Specifies the newly created Toast message display order while multiple toast's are added to page one after another.
     * By default, newly added Toast will be added after old Toast's.
     *
     * @default true
     */
    @Property(true)
    public newestOnTop: boolean;

    /**
     * Specifies whether to show the close button in Toast message to close the Toast.
     *
     * @default false
     */
    @Property(false)
    public showCloseButton: boolean;

    /**
     * Specifies whether to show the progress bar to denote the Toast message display timeout.
     *
     * @default false
     */
    @Property(false)
    public showProgressBar: boolean;

    /**
     * Specifies the Toast display time duration on the page in milliseconds.
     * - Once the time expires, Toast message will be removed.
     * - Setting 0 as a time out value displays the Toast on the page until the user closes it manually.
     *
     * @default 5000
     */
    @Property(5000)
    public timeOut: number;

    /**
     * Specifies whether to show the progress bar with left to right direction to denote the Toast message display timeout.
     */
    @Property('Rtl')
    public progressDirection: ProgressDirectionType;

    /**
     * Specifies the Toast display time duration after interacting with the Toast.
     *
     * @default 1000
     */
    @Property(1000)
    public extendedTimeout: number;

    /**
     * Specifies the animation configuration settings for showing and hiding the Toast.
     *
     * {% codeBlock src='toast/animation/index.md' %}{% endcodeBlock %}
     *
     * @blazorType ToastAnimationSettings
     * @default { show: { effect: 'FadeIn', duration: 600, easing: 'linear' },
     * hide: { effect: 'FadeOut', duration: 600, easing: 'linear' }}
     */
    @Complex<ToastAnimationSettingsModel>({}, ToastAnimationSettings)
    public animation: ToastAnimationSettingsModel;

    /**
     * Specifies the position of the Toast message to be displayed within target container.
     * In the case of multiple Toast display, new Toast position will not update on dynamic change of property values
     * until the old Toast messages removed.
     * X values are: Left , Right ,Center
     * Y values are: Top , Bottom
     *
     * {% codeBlock src='toast/position/index.md' %}{% endcodeBlock %}
     *
     * @default { X: "Left", Y: "Top" }
     * @blazorType ToastPosition
     */
    @Complex<ToastPositionModel>({}, ToastPosition)
    public position: ToastPositionModel;

    /**
     * Specifies the collection of Toast action `buttons` to be rendered with the given
     * Button model properties and its click action handler.
     *
     * {% codeBlock src='toast/buttons/index.md' %}{% endcodeBlock %}
     *
     * @default [{}]
     * @deprecated
     */
    @Collection<ButtonModelPropsModel>([{}], ButtonModelProps)
    public buttons: ButtonModelPropsModel[];

    /**
     * Specifies the target container where the Toast to be displayed.
     * Based on the target, the positions such as `Left`, `Top` will be applied to the Toast.
     * The default value is null, which refers the `document.body` element.
     *
     * @default null
     * @aspType string
     * @blazorType string
     */
    @Property(null)
    public target: HTMLElement | Element | string;

    /**
     * Triggers the event after the Toast gets created.
     *
     * @event 'event'
     * @blazorProperty 'Created'
     */
    @Event()
    public created: EmitType<Event>;

    /**
     * Event triggers before sanitize the value.
     *
     * @event 'event'
     * @blazorProperty 'OnSanitizeHtml'
     */
    @Event()
    public beforeSanitizeHtml: EmitType<BeforeSanitizeHtmlArgs>;

    /**
     * Triggers the event after the Toast gets destroyed.
     *
     * @event 'event'
     * @blazorProperty 'Destroyed'
     */
    @Event()
    public destroyed: EmitType<Event>;


    /**
     * Triggers the event after the Toast shown on the target container.
     *
     * @event 'event'
     * @blazorProperty 'Opened'
     */
    @Event()
    public open: EmitType<ToastOpenArgs>;

    /**
     * Triggers the event before the toast shown.
     *
     * @event 'event'
     * @blazorProperty 'OnOpen'
     */
    @Event()
    public beforeOpen: EmitType<ToastBeforeOpenArgs>;
    /**
     * Triggers the event before the toast close.
     *
     * @event 'event'
     * @blazorProperty 'OnClose'
     */
    @Event()
    public beforeClose: EmitType<ToastBeforeCloseArgs>;
    /**
     * Trigger the event after the Toast hides.
     *
     * @event 'event'
     * @blazorProperty 'Closed'
     */
    @Event()
    public close: EmitType<ToastCloseArgs>;
    /**
     * The event will be fired while clicking on the Toast.
     *
     * @event 'event'
     * @blazorProperty 'OnClick'
     */
    @Event()
    public click: EmitType<ToastClickEventArgs>;

    /**
     * Gets the Component module name.
     *
     * @returns {string} - returns the string
     * @private
     */
    public getModuleName(): string {
        return 'toast';
    }
    /**
     * Gets the persisted state properties of the Component.
     *
     * @returns {string} - returns the string
     */
    protected getPersistData(): string {
        return this.addOnPersist([]);
    }
    /**
     * Removes the component from the DOM and detaches all its related event handlers, attributes and classes.
     *
     * @returns {void}
     */
    public destroy(): void {
        this.hide('All');
        this.element.classList.remove(CONTAINER);
        setStyleAttribute(this.element, { 'position': '', 'z-index': '' });
        if (!isNOU(this.refElement) && !isNOU(this.refElement.parentElement)) {
            this.refElement.parentElement.insertBefore(this.element, this.refElement);
            detach(this.refElement);
            this.refElement = undefined;
        }
        if (!this.isBlazorServer()) { super.destroy(); }
    }

    /**
     * Initialize the event handler
     *
     * @returns {void}
     * @private
     */
    protected preRender(): void {
    //There is no event handler
        this.isDevice = Browser.isDevice;
        if (this.width === '300px') {
            this.width = (this.isDevice && screen.width < 768) ? '100%' : '300px';
        }
        if (isNOU(this.target)) {
            this.target = document.body;
        }
        if (this.enableRtl && !this.isBlazorServer()) {
            this.element.classList.add(RTL);
        }
    }

    /**
     * Initialize the component rendering
     *
     * @returns {void}
     * @private
     */
    public render(): void {
        this.progressObj = [];
        this.intervalId = [];
        this.contentTemplate = null;
        this.toastTemplate = null;
        this.renderComplete();
        this.initRenderClass = this.element.className;
    }
    /**
     * To show Toast element on a document with the relative position.
     *
     * @param  {ToastModel} toastObj - To show Toast element on screen.
     * @returns {void}
     * @deprecated
     */
    public show(toastObj?: ToastModel): void {
        let collectionObj: CollectionToast;
        if (!isNOU(toastObj)) {
            this.templateChanges(toastObj);
            collectionObj = JSON.parse(JSON.stringify(toastObj));
            extend(this, this, toastObj);
        }
        if (isNOU(this.toastContainer)) {
            this.toastContainer = this.getContainer();
            const target: HTEle = typeof (this.target) === 'string' ? <HTEle>document.querySelector(this.target) :
                (typeof (this.target) === 'object' ? (this.target as HTMLElement) : <HTEle>document.body);
            if (isNOU(target)) {
                return;
            }
            if (target.tagName === 'BODY') {
                this.toastContainer.style.position = 'fixed';
            } else {
                this.toastContainer.style.position = 'absolute';
                (target as HTEle).style.position = 'relative';
            }
            this.setPositioning(this.position);
            target.appendChild(this.toastContainer);
        }
        if (this.isBlazorServer() && this.element.classList.contains('e-control')) {
            this.isToastModel(toastObj);
            return;
        }
        this.toastEle = this.createElement('div', { className: ROOT, id: getUniqueID('toast') });
        this.setWidthHeight();
        this.setCSSClass(this.cssClass);
        // eslint-disable-next-line
    (isNOU(this.template) || this.template === '') ? this.personalizeToast() : this.templateRendering();
        this.setProgress();
        this.setCloseButton();
        this.setAria();
        this.appendToTarget(toastObj);
        if (this.isDevice && screen.width < 768) {
            new Touch(this.toastEle, { swipe: this.swipeHandler.bind(this) });
        }
        if (!isNOU(collectionObj)) {
            extend(collectionObj, { element: [this.toastEle] }, true);
            this.toastCollection.push(collectionObj);
        }
        // eslint-disable-next-line @typescript-eslint/no-explicit-any
        if ((this as any).isReact) {
            this.renderReactTemplates();
        }
    }

    /**
     * @param {string} id - specifies the id
     * @param {ToastModel} toastObj - specifies the model
     * @returns {void}
     * @hidden
     * @deprecated
     * This method applicable for blazor alone.
     */
    public showToast(id: string, toastObj?: ToastModel): void {
        this.toastEle = this.element.querySelector('#' + id);
        this.show(toastObj);
    }

    private isToastModel(toastObj?: ToastModel): void {
        this.toastContainer = this.element;
        this.setPositioning(this.position);
        // eslint-disable-next-line
    const proxy: Toast = this;
        if (!isNOU(proxy.element.lastElementChild)) {
            this.setProgress();
        }
        this.setAria();
        this.appendToTarget(toastObj);
    }

    private swipeHandler(e: SwipeEventArgs): void {
        const toastEle: HTMLElement = <HTMLElement>closest(<Element>e.originalEvent.target, '.' + ROOT + ':not(.' + CONTAINER + ')');
        const hideAnimation: Effect = this.animation.hide.effect;
        if (!isNOU(toastEle)) {
            if (e.swipeDirection === 'Right') {
                this.animation.hide.effect = 'SlideRightOut';
                this.hideToast('swipe', toastEle);
            } else if (e.swipeDirection === 'Left') {
                this.animation.hide.effect = 'SlideLeftOut';
                this.hideToast('swipe', toastEle);
            }
            this.animation.hide.effect = hideAnimation;
        }
    }

    private templateChanges(toastObj: ToastModel): void {
        if (!isUndefined(toastObj.content) && !isNOU(this.contentTemplate) && this.content !== toastObj.content) {
            this.clearContentTemplate();
        }
        if (!isUndefined(toastObj.template) && !isNOU(this.toastTemplate) && this.template !== toastObj.template) {
            this.clearToastTemplate();
        }
    }

    private setCSSClass(cssClass: string): void {
        if (cssClass) {
            const split: string = cssClass.indexOf(',') !== -1 ? ',' : ' ';
            classList(this.toastEle, cssClass.split(split), []);
            if (this.toastContainer) {
                classList(this.toastContainer, cssClass.split(split), []);
            }
        }
    }


    private setWidthHeight(): void {
        if (this.width === '300px') {
            this.toastEle.style.width = formatUnit(this.width);
        } else if (this.width === '100%') {
            this.toastContainer.classList.add(WIDTHFULL);
        } else {
            this.toastEle.style.width = formatUnit(this.width);
            this.toastContainer.classList.remove(WIDTHFULL);
        }
        this.toastEle.style.height = formatUnit(this.height);
    }

    private templateRendering(): void {
        this.fetchEle(this.toastEle, this.template, 'template');
    }

    /**
     * @param {string} value - specifies the string value.
     * @returns {string} - returns the string
     * @hidden
     */
    public sanitizeHelper(value: string): string {
        if (this.enableHtmlSanitizer) {
            const item: BeforeSanitizeHtmlArgs = SanitizeHtmlHelper.beforeSanitize();
            const beforeEvent: BeforeSanitizeHtmlArgs = {
                cancel: false,
                helper: null
            };
            extend(item, item, beforeEvent);
            this.trigger('beforeSanitizeHtml', item);
            if (item.cancel && !isNOU(item.helper)) {
                value = item.helper(value);
            } else if (!item.cancel) {
                value = SanitizeHtmlHelper.serializeValue(item, value);
            }
        }
        return value;
    }

    /**
     * To Hide Toast element on a document.
     * To Hide all toast element when passing 'All'.
     *
     * @param  {HTMLElement} element - To Hide Toast element on screen.
     * @returns {void}
     */
    public hide(element?: HTMLElement | Element | string): void {
        this.hideToast('', element);
    }

    private hideToast(interactionType: string, element?: HTMLElement | Element | string): void {
        if (isNOU(this.toastContainer) || this.toastContainer.childElementCount === 0) {
            return;
        }
        if (typeof element === 'string' && element === 'All') {
            for (let i: number = 0; i < this.toastContainer.childElementCount; i++) {
                this.destroyToast(this.toastContainer.children[i as number] as HTEle, interactionType);
            }
            return;
        }
        if (isNOU(element)) {
            element = <HTEle>(this.newestOnTop ? this.toastContainer.lastElementChild : this.toastContainer.firstElementChild);
        }
        this.destroyToast(element as HTEle, interactionType);
    }

    private fetchEle(ele: HTEle, value: string | Function, prob: string): HTEle {
        value = typeof (value) === 'string' ? this.sanitizeHelper(value) : value;
        // eslint-disable-next-line
    let templateFn: Function;
        let tempVar: HTEle;
        let tmpArray: HTEle[];
        let templateProps: string;
        if (ele.classList.contains(TITLE)) {
            templateProps = this.element.id + 'title';
        } else if (ele.classList.contains(CONTENT)) {
            templateProps = this.element.id + 'content';
        } else {
            templateProps = this.element.id + 'template';
        }
        // eslint-disable-next-line
    prob === 'content' ? tempVar = this.contentTemplate : tempVar = this.toastTemplate;
        if (!isNOU(tempVar)) {
            ele.appendChild(tempVar.cloneNode(true));
            return ele;
        }
        try {
            if (typeof value !== 'function' && document.querySelectorAll(value).length > 0) {
                let elem: HTEle = null;
                if (prob !== 'title') {
                    elem = <HTEle>document.querySelector(value);
                    ele.appendChild(elem);
                    elem.style.display = '';
                }
                const clo: HTEle = isNOU(<HTEle>elem) ? tempVar : <HTEle>elem.cloneNode(true);
                // eslint-disable-next-line
        prob === 'content' ? this.contentTemplate = clo : this.toastTemplate = clo;
            }
            else {
                templateFn = templateCompiler(value);
            }
        } catch (e) {
            templateFn = typeof value == 'object' ? templateCompiler(value) : templateCompiler(initializeCSPTemplate( function() { return value;}));
            // eslint-disable-next-line
        let templateValue: string | Function = value;
        }
        if (!isNOU(templateFn)) {
            if (!this.isBlazorServer()) {
                tmpArray = templateFn({}, this, prob, null, true);
            } else {
                const isString: boolean = true;
                tmpArray = templateFn({}, this, prob, templateProps, isString);
            }
        }
        if (!isNOU(tmpArray) && tmpArray.length > 0 && !(isNOU(tmpArray[0].tagName) && tmpArray.length === 1)) {
            [].slice.call(tmpArray).forEach((el: HTEle): void => {
                if (!isNOU(el.tagName)) {
                    el.style.display = '';
                }
                ele.appendChild(el);
            });
        } else if (typeof value !== 'function' && ele.childElementCount === 0) {
            ele.innerHTML = value;
        }
        return ele;
    }

    private clearProgress(intervalId: number): void {
        if (!isNOU(this.intervalId[intervalId as number])) {
            clearInterval(this.intervalId[intervalId as number]);
            delete this.intervalId[intervalId as number];
        }
        if (!isNOU(this.progressObj[intervalId as number])) {
            clearInterval(this.progressObj[intervalId as number].intervalId);
            delete this.progressObj[intervalId as number];
        }
    }

    private removeToastContainer(isClosed: boolean): void {
        if (isClosed && this.toastContainer.classList.contains('e-toast-util')) {
            detach(this.toastContainer);
        }
    }

    private clearContainerPos(isClosed?: boolean): void {
        if (this.isBlazorServer()) {
            this.toastContainer = null;
            return;
        }
        if (this.customPosition) {
            setStyleAttribute(this.toastContainer, { 'left': '', 'top': '' });
            this.removeToastContainer(isClosed);
            this.toastContainer = null;
            this.customPosition = false;
        } else {
            [ROOT + '-top-left',
                ROOT + '-top-right',
                ROOT + '-bottom-left',
                ROOT + '-bottom-right',
                ROOT + '-bottom-center',
                ROOT + '-top-center',
                ROOT + '-full-width'].forEach((pos: string) => {
                if (!isNOU(this.toastContainer) && this.toastContainer.classList.contains(pos)) {
                    this.toastContainer.classList.remove(pos);
                }
            });
            this.removeToastContainer(isClosed);
            this.toastContainer = null;
        }
        if (!isNOU(this.contentTemplate)) {
            this.clearContentTemplate();
        }
        if (!isNOU(this.toastTemplate)) {
            this.clearToastTemplate();
        }
    }

    private clearContentTemplate(): void {
        this.contentTemplate.style.display = 'none';
        document.body.appendChild(this.contentTemplate);
        this.contentTemplate = null;
    }

    private clearToastTemplate(): void {
        this.toastTemplate.style.display = 'none';
        document.body.appendChild(this.toastTemplate);
        this.toastTemplate = null;
    }
    private isBlazorServer(): boolean {
        return (isBlazor() && this.isServerRendered);
    }
    private destroyToast(toastEle: HTEle, interactionType: string): void {
        let toastObj: CollectionToast;
        for (let i: number = 0; i < this.toastCollection.length; i++) {
            if (this.toastCollection[i as number].element[0] === toastEle) {
                toastObj = this.toastCollection[i as number];
                this.toastCollection.splice(i, 1);
            }
        }
        const toastBeforeClose: ToastBeforeCloseArgs = {
            options: this,
            cancel: false,
            type: interactionType,
            element: toastEle,
            toastContainer: this.toastContainer
        };
        let hideAnimate: ToastAnimationsModel = this.animation.hide;
        let animate: AnimationModel = {
            duration: hideAnimate.duration, name: (<Effect>hideAnimate.effect === <Effect>'None' && animationMode === 'Enable') ? 'FadeOut': hideAnimate.effect, timingFunction: hideAnimate.easing
        };
        const intervalId: number = parseInt(toastEle.id.split('toast_')[1], 10);
        const toastClose: ToastCloseArgs = this.isBlazorServer() ? {
            options: toastObj,
            toastContainer: this.toastContainer
        } : {
            options: toastObj,
            toastContainer: this.toastContainer,
            toastObj: this
        };
        this.trigger('beforeClose', toastBeforeClose, (toastBeforeCloseArgs: ToastBeforeCloseArgs) => {
            if (!toastBeforeCloseArgs.cancel) {
                if (!isNOU(this.progressObj[intervalId as number]) && !isNOU(toastEle.querySelector('.' + PROGRESS))) {
                    this.progressObj[intervalId as number].progressEle.style.width = '0%';
                }
                animate.end = () => {
                    this.clearProgress(intervalId);
                    if (!this.isBlazorServer() || isNOU(toastObj)) {
                        detach(toastEle);
                    }
                    this.trigger('close', toastClose);
                    if (this.toastContainer.childElementCount === 0) {
                        this.clearContainerPos(true);
                    }
                    hideAnimate = null;
                    animate = null;
                };
                new Animation(animate).animate(toastEle);
            }
        });
    }

    private personalizeToast(): void {
        this.setIcon();
        this.setTitle();
        this.setContent();
        this.actionButtons();
    }

    private setAria(): void {
        attributes(this.toastEle, { 'role': 'alert' });
    }
    private setPositioning(pos: ToastPositionModel): void {
        if (this.isBlazorServer()) {
            return;
        }
        if (!isNaN(parseFloat(pos.X as string)) || !isNaN(parseFloat(pos.Y as string))) {
            this.customPosition = true;
            setStyleAttribute(this.toastContainer, { 'left': formatUnit(pos.X), 'top': formatUnit(pos.Y) });
        } else {
            this.toastContainer.classList.add(ROOT + '-' + pos.Y.toString().toLowerCase() + '-' + pos.X.toString().toLowerCase());
        }
    }

    private setCloseButton(): void {
        if (!this.showCloseButton) {
            return;
        }
        // eslint-disable-next-line
    let localeText: object = { close: 'Close' };
        this.l10n = new L10n('toast', localeText, this.locale);
        this.l10n.setLocale(this.locale);
        const closeIconTitle: string = this.l10n.getConstant('close');
        const closeBtn: HTEle = this.createElement(
            'div', { className: CLOSEBTN + ' e-icons ', attrs: { tabindex: '0', 'aria-label': closeIconTitle, 'role': 'button'  } });
        this.toastEle.classList.add('e-toast-header-close-icon');
        this.toastEle.appendChild(closeBtn);
    }

    private setProgress(): void {
        if (this.timeOut > 0) {
            const id: number = parseInt(this.toastEle.id.split('toast_')[1], 10);
            this.intervalId[id as number] = window.setTimeout(this.destroyToast.bind(this, this.toastEle), this.timeOut);
            this.progressObj[id as number] = { hideEta: null, intervalId: null, maxHideTime: null,
                element: null, timeOutId: null, progressEle: null };
            this.progressObj[id as number].maxHideTime = parseFloat(this.timeOut + '');
            this.progressObj[id as number].hideEta = new Date().getTime() + this.progressObj[id as number].maxHideTime;
            this.progressObj[id as number].element = this.toastEle;
            if (this.extendedTimeout > 0) {
                EventHandler.add(this.toastEle, 'mouseover', this.toastHoverAction.bind(this, id));
                EventHandler.add(this.toastEle, 'mouseleave', this.delayedToastProgress.bind(this, id));
                this.progressObj[id as number].timeOutId = this.intervalId[id as number];
            }
            if (this.showProgressBar) {
                this.progressBarEle = this.createElement('div', { className: PROGRESS });
                this.toastEle.insertBefore(this.progressBarEle, this.toastEle.children[0]);
                // eslint-disable-next-line max-len
                this.progressObj[id as number].intervalId = setInterval(this.updateProgressBar.bind(this, this.progressObj[id as number]), 10);
                this.progressObj[id as number].progressEle = this.progressBarEle;
            }
        }
    }

    private toastHoverAction(id: number): void {
        clearTimeout(this.progressObj[id as number].timeOutId);
        clearInterval(this.progressObj[id as number].intervalId);
        this.progressObj[id as number].hideEta = 0;
        const toastEle: HTEle = this.progressObj[id as number].element;
        if (!isNOU(toastEle.querySelector('.' + PROGRESS))) {
            this.progressObj[id as number].progressEle.style.width = '0%';
        }
    }

    private delayedToastProgress(id: number): void {
        const progress: Progressbar = this.progressObj[id as number];
        const toastEle: HTEle = progress.element;
        progress.timeOutId = window.setTimeout(this.destroyToast.bind(this, toastEle), this.extendedTimeout);
        progress.maxHideTime = parseFloat(this.extendedTimeout + '');
        progress.hideEta = new Date().getTime() + progress.maxHideTime;
        if (!isNOU(toastEle.querySelector('.' + PROGRESS))) {
            progress.intervalId = setInterval(this.updateProgressBar.bind(this, progress), 10);
        }
    }

    private updateProgressBar(progressObj: Progressbar): void {
        let percentage: number = ((progressObj.hideEta - (new Date().getTime())) / progressObj.maxHideTime) * 100;
        percentage = this.progressDirection === 'Ltr' ? 100  - percentage : percentage;
        progressObj.progressEle.style.width = percentage + '%';
    }

    private setIcon(): void {
        if (isNOU(this.icon) || this.icon.length === 0) {
            return;
        }
        const iconEle: HTEle = this.createElement('div', { className: ICON + ' e-icons ' + this.icon });
        this.toastEle.classList.add('e-toast-header-icon');
        this.toastEle.appendChild(iconEle);
    }

    private setTitle(): void {
        if (isNOU(this.title)) {
            return;
        }
        let titleEle: HTEle = this.createElement('div', { className: TITLE });
        titleEle = this.fetchEle(titleEle, this.title, 'title');
        const msgContainer: HTEle = this.createElement('div', { className: MESSAGE });
        msgContainer.appendChild(titleEle);
        this.toastEle.appendChild(msgContainer);
    }

    private setContent(): void {
        let contentEle: HTEle = this.createElement('div', { className: CONTENT });
        const ele: HTEle = this.element;
        if (isNOU(this.content) || this.content === '') {
            const isContent: boolean = this.element.innerHTML.replace(/\s/g, '') !== '';
            if ((ele.children.length > 0 || isContent) && !(ele.firstElementChild && ele.firstElementChild.classList.contains(ROOT))) {
                this.innerEle = document.createDocumentFragment();
                const tempEle: HTEle = this.createElement('div');
                while (ele.childNodes.length !== 0) {
                    this.innerEle.appendChild(this.element.childNodes[0]);
                }
                contentEle.appendChild(this.innerEle);
                [].slice.call(contentEle.children).forEach((ele: HTEle) => {
                    tempEle.appendChild(ele.cloneNode(true));
                });
                this.content = tempEle;
                this.appendMessageContainer(contentEle);
            }
        } else {
            if (typeof (this.content) === 'object' && !isNOU((this.content as HTEle).tagName)) {
                contentEle.appendChild(this.content);
                this.content = <HTEle>this.content.cloneNode(true);
                this.appendMessageContainer(contentEle);
            } else {
                contentEle = this.fetchEle(contentEle, this.content as string, 'content');
                this.appendMessageContainer(contentEle);
            }
        }
    }

    private appendMessageContainer(element: HTEle): void {
        if (this.toastEle.querySelectorAll('.' + MESSAGE).length > 0) {
            this.toastEle.querySelector('.' + MESSAGE).appendChild(element);
        } else {
            const msgContainer: HTEle = this.createElement('div', { className: MESSAGE });
            msgContainer.appendChild(element);
            this.toastEle.appendChild(msgContainer);
        }
    }

    private actionButtons(): void {
        const actionBtnContainer: HTEle = this.createElement('div', { className: ACTIOBUTTONS });
        [].slice.call(this.buttons).forEach((actionBtn: ButtonModelPropsModel) => {
            if (isNOU(actionBtn.model)) {
                return;
            }
            const btnDom: HTMLButtonElement = this.createElement('button') as HTMLButtonElement;
            btnDom.setAttribute('type', 'button');
            if (isNOU(actionBtn.model.cssClass) || actionBtn.model.cssClass.length === 0) {
                actionBtn.model.cssClass = 'e-primary' + ' ' + this.cssClass;
            }
            btnDom.classList.add('e-small');
            new Button(actionBtn.model, btnDom);
            if (!isNOU(actionBtn.click) && typeof (actionBtn.click) === 'function') {
                EventHandler.add(btnDom, 'click', actionBtn.click);
            }
            actionBtnContainer.appendChild(btnDom);
        });
        if (actionBtnContainer.childElementCount > 0) {
            this.appendMessageContainer(actionBtnContainer);
        }
    }

    private appendToTarget(toastObj?: ToastModel): void {
        const toastBeforeOpen: ToastBeforeOpenArgs = this.isBlazorServer() ? {
            options: toastObj,
            element: this.toastEle,
            cancel: false
        } : {
            options: toastObj,
            toastObj: this,
            element: this.toastEle,
            cancel: false
        };
        this.trigger('beforeOpen', toastBeforeOpen, (toastBeforeOpenArgs: ToastBeforeOpenArgs) => {
            if (!toastBeforeOpenArgs.cancel) {
                if (!this.isBlazorServer()) {
                    this.toastEle.style.display = 'none';
                }
                if (this.newestOnTop && this.toastContainer.childElementCount !== 0) {
                    this.toastContainer.insertBefore(this.toastEle, this.toastContainer.children[0]);
                } else if (!this.isBlazorServer()) {
                    this.toastContainer.appendChild(this.toastEle);
                }
                removeClass([this.toastEle], TOAST_BLAZOR_HIDDEN);
                EventHandler.add(this.toastEle, 'click', this.clickHandler, this);
                EventHandler.add(this.toastEle, 'keydown', this.keyDownHandler, this);
                this.toastContainer.style.zIndex = getZindexPartial(this.toastContainer) + '';
                this.displayToast(this.toastEle, toastObj);
            } else if (this.isBlazorServer()) {
                const intervalId: number = parseInt(this.toastEle.id.split('toast_')[1], 10);
                this.clearProgress(intervalId);
                detach(this.toastEle);
                if (this.toastContainer.childElementCount === 0) {
                    this.clearContainerPos();
                }
            }
        });
    }

    private clickHandler(e: Event): void {
        if (!this.isBlazorServer()) {
            e.stopPropagation();
        }
        const target: HTEle = e.target as HTEle;
        const toastEle: HTEle = closest(target, '.' + ROOT) as HTEle;
        const clickArgs: ToastClickEventArgs = this.isBlazorServer() ? {
            element: toastEle, cancel: false, clickToClose: false, originalEvent: e
        } : {
            element: toastEle, cancel: false, clickToClose: false, originalEvent: e, toastObj: this
        };
        const isCloseIcon: boolean = target.classList.contains(CLOSEBTN);
        this.trigger('click', clickArgs, (toastClickArgs: ToastClickEventArgs) => {
            if ((isCloseIcon && !toastClickArgs.cancel) || toastClickArgs.clickToClose) {
                this.destroyToast(toastEle, 'click');
            }
        });
    }

    private keyDownHandler(e: Event): void {
        if (((e as KeyboardEventArgs).target as HTMLElement).classList.contains(CLOSEBTN) &&
      ((e as KeyboardEventArgs).keyCode === 13 || (e as KeyboardEventArgs).keyCode === 32)) {
            const target: HTEle = e.target as HTEle;
            const toastEle: HTEle = closest(target, '.' + ROOT) as HTEle;
            this.destroyToast(toastEle, 'key');
        }
    }

    private displayToast(toastEle: HTEle, toastObj?: ToastModel): void {
        const showAnimate: ToastAnimationsModel = this.animation.show;
        const animate: AnimationModel = {
            duration: showAnimate.duration, name: (<Effect>showAnimate.effect === <Effect>"None" && animationMode === 'Enable') ? 'FadeIn':showAnimate.effect, timingFunction: showAnimate.easing
        };
        const toastOpen: ToastOpenArgs = this.isBlazorServer() ? {
            options: toastObj,
            element: this.toastEle
        } : {
            options: toastObj,
            toastObj: this,
            element: this.toastEle
        };
        animate.begin = () => {
            toastEle.style.display = '';
        };
        animate.end = () => {
            this.trigger('open', toastOpen);
        };
        new Animation(animate).animate(toastEle);
    }

    private getContainer(): HTEle {
        this.element.classList.add(CONTAINER);
        return this.element;
    }

    /**
     * Called internally if any of the property value changed.
     *
     * @param {ToastModel} newProp - specifies the new property
     * @param {ToastModel} oldProp - specifies the old property
     * @returns {void}
     * @private
     */
    // eslint-disable-next-line
  public onPropertyChanged(newProp: ToastModel, oldProp: ToastModel): void {
        const container: HTMLElement = this.element;
        for (const prop of Object.keys(newProp)) {
            switch (prop) {
            case 'enableRtl':
                // eslint-disable-next-line
          newProp.enableRtl ? container.classList.add(RTL) : container.classList.remove(RTL);
                break;
            }
        }

    }
}

/**
 * Base for creating Toast through utility method.
 */
// eslint-disable-next-line
export namespace ToastUtility {
    /**
     * To display a simple toast using the 'ToastUtility' with 'ToastModal' or
     * as string with toast content, type, timeOut.
     * ```
     * Eg : ToastUtility.show('Toast Content Message', 'Information', 7000);
     *
     * ```
     */
    /* istanbul ignore next */
    /**
     *
     * @param { ToastModel | string } content - Specifies the toast modal or the content of the Toast.
     * @param {string} type - Specifies the type of toast.
     * @param { number } timeOut - Specifies the timeOut of the toast.
     * @returns {Toast} - returns the element
     */
    export function show(content: ToastModel | string, type?: string, timeOut?: number): Toast {
        let toastContainerElement: HTMLElement;
        if (document.querySelector('.' + CONTAINER)) {
            toastContainerElement = document.querySelector('.' + CONTAINER);
        } else {
            toastContainerElement = createElement('div', { 'className': ROOT + ' ' + CONTAINER + ' e-toast-util' });
            document.body.appendChild(toastContainerElement);
        }
        let untilToastsModel: ToastModel;
        if (typeof(content) === 'string') {
            let cssClass: string;
            let icon: string;
            if (!isNOU(type)) {
                switch (type) {
                case 'Warning':
                    cssClass = 'e-toast-warning';
                    icon = 'e-toast-warning-icon';
                    break;
                case 'Success':
                    cssClass = 'e-toast-success';
                    icon = 'e-toast-success-icon';
                    break;
                case 'Error':
                    cssClass = 'e-toast-danger';
                    icon = 'e-toast-error-icon';
                    break;
                case 'Information':
                    cssClass = 'e-toast-info';
                    icon = 'e-toast-info-icon';
                    break;
                }
            } else {
                cssClass = '';
                icon = '';
            }
            untilToastsModel = {
                content: content,
                cssClass: cssClass,
                icon: icon,
                timeOut: !isNOU(timeOut) ? timeOut : 5000
            };
        } else {
            untilToastsModel = content;
        }
        const toastObj : Toast = new Toast(untilToastsModel);
        toastObj.appendTo(toastContainerElement);
        toastObj.show();
        return toastObj;
    }
}