@blueprintjs/core/src/components/button/buttons.tsx

/*
 * Copyright 2016 Palantir Technologies, Inc. All rights reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// HACKHACK: these components should go in separate files
/* eslint-disable max-classes-per-file */

import * as React from "react";

import { DISPLAYNAME_PREFIX, removeNonHTMLProps } from "../../common/props";
import { IRef, refHandler, setRef } from "../../common/refs";
import { AbstractButton, IButtonProps, IAnchorButtonProps, ButtonProps, AnchorButtonProps } from "./abstractButton";

// eslint-disable-next-line deprecation/deprecation
export { IAnchorButtonProps, IButtonProps, ButtonProps, AnchorButtonProps };

export class Button extends AbstractButton<HTMLButtonElement> {
    public static displayName = `${DISPLAYNAME_PREFIX}.Button`;

    // need to keep this ref so that we can access it in AbstractButton#handleKeyUp
    public buttonRef: HTMLButtonElement | null = null;

    protected handleRef: IRef<HTMLButtonElement> = refHandler(this, "buttonRef", this.props.elementRef);

    public render() {
        return (
            <button
                type="button"
                ref={this.handleRef}
                {...removeNonHTMLProps(this.props)}
                {...this.getCommonButtonProps()}
            >
                {this.renderChildren()}
            </button>
        );
    }

    public componentDidUpdate(prevProps: ButtonProps) {
        if (prevProps.elementRef !== this.props.elementRef) {
            setRef(prevProps.elementRef, null);
            this.handleRef = refHandler(this, "buttonRef", this.props.elementRef);
            setRef(this.props.elementRef, this.buttonRef);
        }
    }
}

export class AnchorButton extends AbstractButton<HTMLAnchorElement> {
    public static displayName = `${DISPLAYNAME_PREFIX}.AnchorButton`;

    // need to keep this ref so that we can access it in AbstractButton#handleKeyUp
    public buttonRef: HTMLAnchorElement | null = null;

    protected handleRef: IRef<HTMLAnchorElement> = refHandler(this, "buttonRef", this.props.elementRef);

    public render() {
        const { href, tabIndex = 0 } = this.props;
        const commonProps = this.getCommonButtonProps();

        return (
            <a
                role="button"
                ref={this.handleRef}
                {...removeNonHTMLProps(this.props)}
                {...commonProps}
                href={commonProps.disabled ? undefined : href}
                tabIndex={commonProps.disabled ? -1 : tabIndex}
            >
                {this.renderChildren()}
            </a>
        );
    }

    public componentDidUpdate(prevProps: AnchorButtonProps) {
        if (prevProps.elementRef !== this.props.elementRef) {
            setRef(prevProps.elementRef, null);
            this.handleRef = refHandler(this, "buttonRef", this.props.elementRef);
            setRef(this.props.elementRef, this.buttonRef);
        }
    }
}