// @flow

import Tooltip from '@atlaskit/tooltip';
import React, { Fragment } from 'react';

import AbstractToolboxItem from './AbstractToolboxItem';
import type { Props } from './AbstractToolboxItem';

/**
 * Web implementation of {@code AbstractToolboxItem}.
 */
export default class ToolboxItem extends AbstractToolboxItem<Props> {
    /**
     * Handles rendering of the actual item. If the label is being shown, which
     * is controlled with the `showLabel` prop, the item is rendered for its
     * display in an overflow menu, otherwise it will only have an icon, which
     * can be displayed on any toolbar.
     *
     * @protected
     * @returns {ReactElement}
     */
    _renderItem() {
        const {
            disabled,
            elementAfter,
            onClick,
            showLabel,
            tooltipPosition
        } = this.props;
        const className = showLabel ? 'overflow-menu-item' : 'toolbox-button';
        const props = {
            'aria-label': this.accessibilityLabel,
            className: className + (disabled ? ' disabled' : ''),
            onClick: disabled ? undefined : onClick
        };
        const elementType = showLabel ? 'li' : 'div';
        const useTooltip = this.tooltip && this.tooltip.length > 0;
        let children = (
            <Fragment>
                { this._renderIcon() }
                { showLabel && <span>
                    { this.label }
                </span> }
                { elementAfter }
            </Fragment>
        );

        if (useTooltip) {
            children = (
                <Tooltip
                    content = { this.tooltip }
                    position = { tooltipPosition }>
                    { children }
                </Tooltip>
            );
        }

        return React.createElement(elementType, props, children);
    }

    /**
     * Helper function to render the item's icon.
     *
     * @private
     * @returns {ReactElement}
     */
    _renderIcon() {
        const { iconName, showLabel } = this.props;
        const icon = <i className = { iconName } />;
        const elementType = showLabel ? 'span' : 'div';
        const className
            = showLabel ? 'overflow-menu-item-icon' : 'toolbox-icon';

        return React.createElement(elementType, { className }, icon);
    }
}