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path: root/server/sonar-web/src/main/js/components/charts/TreeMapRect.tsx
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/*
 * SonarQube
 * Copyright (C) 2009-2022 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
import classNames from 'classnames';
import { scaleLinear } from 'd3-scale';
import * as React from 'react';
import { convertToTo, Location } from '../../helpers/urls';
import Link from '../common/Link';
import Tooltip, { Placement } from '../controls/Tooltip';
import LinkIcon from '../icons/LinkIcon';

const SIZE_SCALE = scaleLinear()
  .domain([3, 15])
  .range([11, 18])
  .clamp(true);

interface Props {
  fill?: string;
  gradient?: string;
  height: number;
  icon?: React.ReactNode;
  itemKey: string;
  label: string;
  link?: string | Location;
  onClick?: (item: string) => void;
  placement?: Placement;
  prefix: string;
  tooltip?: React.ReactNode;
  value?: React.ReactNode;
  width: number;
  x: number;
  y: number;
}

const TEXT_VISIBLE_AT_WIDTH = 80;
const TEXT_VISIBLE_AT_HEIGHT = 50;
const ICON_VISIBLE_AT_WIDTH = 60;
const ICON_VISIBLE_AT_HEIGHT = 30;
export default class TreeMapRect extends React.PureComponent<Props> {
  handleLinkClick = (event: React.MouseEvent<HTMLAnchorElement>) => {
    event.stopPropagation();
  };

  handleRectClick = () => {
    if (this.props.onClick) {
      this.props.onClick(this.props.itemKey);
    }
  };

  renderLink = () => {
    const { link, height, width } = this.props;
    const hasMinSize = width >= 24 && height >= 24 && (width >= 48 || height >= 50);
    if (!hasMinSize || link == null) {
      return null;
    }

    return (
      <Link className="treemap-link" onClick={this.handleLinkClick} to={convertToTo(link)}>
        <LinkIcon />
      </Link>
    );
  };

  renderCell = () => {
    const cellStyles = {
      left: this.props.x,
      top: this.props.y,
      width: this.props.width,
      height: this.props.height,
      backgroundColor: this.props.fill,
      backgroundImage: this.props.gradient,
      backgroundSize: '12px 12px',
      fontSize: SIZE_SCALE(this.props.width / this.props.label.length),
      lineHeight: `${this.props.height}px`,
      cursor: this.props.onClick != null ? 'pointer' : 'default'
    };
    const isTextVisible =
      this.props.width >= TEXT_VISIBLE_AT_WIDTH && this.props.height >= TEXT_VISIBLE_AT_HEIGHT;
    const isIconVisible =
      this.props.width >= ICON_VISIBLE_AT_WIDTH && this.props.height >= ICON_VISIBLE_AT_HEIGHT;

    return (
      <div
        className="treemap-cell"
        onClick={this.handleRectClick}
        role="treeitem"
        style={cellStyles}
        tabIndex={0}>
        {isTextVisible && (
          <div className="treemap-inner" style={{ maxWidth: this.props.width }}>
            {this.props.prefix || this.props.value ? (
              <div className="treemap-text">
                <div>
                  {isIconVisible && (
                    <span className={classNames('treemap-icon', { 'spacer-right': isTextVisible })}>
                      {this.props.icon}
                    </span>
                  )}

                  {this.props.prefix && (
                    <>
                      {this.props.prefix}
                      <br />
                    </>
                  )}

                  {this.props.label.substr(this.props.prefix.length)}
                </div>

                <div className="treemap-text-suffix little-spacer-top">{this.props.value}</div>
              </div>
            ) : (
              <div className="treemap-text">{this.props.label}</div>
            )}
          </div>
        )}
        {this.renderLink()}
      </div>
    );
  };

  render() {
    const { placement, tooltip } = this.props;
    return (
      <Tooltip overlay={tooltip || undefined} placement={placement || 'left'}>
        {this.renderCell()}
      </Tooltip>
    );
  }
}