packages/website/ts/components/onboarding/onboarding_flow.tsx


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import * as React from 'react';
import { Placement, Popper, PopperChildrenProps } from 'react-popper';

import { OnboardingCard } from 'ts/components/onboarding/onboarding_card';
import { ContinueButtonDisplay, OnboardingTooltip } from 'ts/components/onboarding/onboarding_tooltip';
import { Animation } from 'ts/components/ui/animation';
import { Container } from 'ts/components/ui/container';
import { Overlay } from 'ts/components/ui/overlay';
import { zIndex } from 'ts/style/z_index';

export interface Step {
    target: string;
    title?: string;
    content: React.ReactNode;
    placement?: Placement;
    shouldHideBackButton?: boolean;
    shouldHideNextButton?: boolean;
    continueButtonDisplay?: ContinueButtonDisplay;
    continueButtonText?: string;
    onContinueButtonClick?: () => void;
}

export interface OnboardingFlowProps {
    steps: Step[];
    stepIndex: number;
    isRunning: boolean;
    onClose: () => void;
    updateOnboardingStep: (stepIndex: number) => void;
    disableOverlay?: boolean;
    isMobile: boolean;
}

export class OnboardingFlow extends React.Component<OnboardingFlowProps> {
    public static defaultProps = {
        disableOverlay: false,
        isMobile: false,
    };
    public render(): React.ReactNode {
        if (!this.props.isRunning) {
            return null;
        }
        let onboardingElement = null;
        if (this.props.isMobile) {
            onboardingElement = <Animation type="easeUpFromBottom">{this._renderOnboardignCard()}</Animation>;
        } else {
            onboardingElement = (
                <Popper
                    referenceElement={this._getElementForStep()}
                    placement={this._getCurrentStep().placement}
                    positionFixed={true}
                >
                    {this._renderPopperChildren.bind(this)}
                </Popper>
            );
        }
        if (this.props.disableOverlay) {
            return onboardingElement;
        }
        return (
            <div>
                <Overlay onClick={this.props.onClose} />
                {onboardingElement}
            </div>
        );
    }
    private _getElementForStep(): Element {
        return document.querySelector(this._getCurrentStep().target);
    }
    private _renderPopperChildren(props: PopperChildrenProps): React.ReactNode {
        const customStyles = { zIndex: zIndex.aboveOverlay };
        // On re-render, we want to re-center the popper.
        props.scheduleUpdate();
        return (
            <div ref={props.ref} style={{ ...props.style, ...customStyles }} data-placement={props.placement}>
                {this._renderToolTip()}
            </div>
        );
    }
    private _renderToolTip(): React.ReactNode {
        const { steps, stepIndex } = this.props;
        const step = steps[stepIndex];
        const isLastStep = steps.length - 1 === stepIndex;
        return (
            <Container marginLeft="30px" width="400px">
                <OnboardingTooltip
                    title={step.title}
                    content={step.content}
                    isLastStep={isLastStep}
                    shouldHideBackButton={step.shouldHideBackButton}
                    shouldHideNextButton={step.shouldHideNextButton}
                    onClose={this.props.onClose}
                    onClickNext={this._goToNextStep.bind(this)}
                    onClickBack={this._goToPrevStep.bind(this)}
                    continueButtonDisplay={step.continueButtonDisplay}
                    continueButtonText={step.continueButtonText}
                    onContinueButtonClick={step.onContinueButtonClick}
                />
            </Container>
        );
    }

    private _renderOnboardignCard(): React.ReactNode {
        const { steps, stepIndex } = this.props;
        const step = steps[stepIndex];
        const isLastStep = steps.length - 1 === stepIndex;
        return (
            <Container position="relative" zIndex={1}>
                <OnboardingCard
                    title={step.title}
                    content={step.content}
                    isLastStep={isLastStep}
                    shouldHideBackButton={step.shouldHideBackButton}
                    shouldHideNextButton={step.shouldHideNextButton}
                    onClose={this.props.onClose}
                    onClickNext={this._goToNextStep.bind(this)}
                    onClickBack={this._goToPrevStep.bind(this)}
                    continueButtonDisplay={step.continueButtonDisplay}
                    continueButtonText={step.continueButtonText}
                    onContinueButtonClick={step.onContinueButtonClick}
                    borderRadius="10px 10px 0px 0px"
                />
            </Container>
        );
    }
    private _getCurrentStep(): Step {
        return this.props.steps[this.props.stepIndex];
    }
    private _goToNextStep(): void {
        const nextStep = this.props.stepIndex + 1;
        if (nextStep < this.props.steps.length) {
            this.props.updateOnboardingStep(nextStep);
        } else {
            this.props.onClose();
        }
    }
    private _goToPrevStep(): void {
        const nextStep = this.props.stepIndex - 1;
        if (nextStep >= 0) {
            this.props.updateOnboardingStep(nextStep);
        } else {
            this.props.onClose();
        }
    }
}