文件操作 - TextPanel.tsx

文件: /usr/share/grafana/public/app/plugins/panel/text/TextPanel.tsx

编辑文件内容

// Libraries
import React, { PureComponent } from 'react';
import { debounce } from 'lodash';
import { PanelProps, renderMarkdown, textUtil } from '@grafana/data';
// Utils
import config from 'app/core/config';
// Types
import { TextOptions } from './types';
import { stylesFactory } from '@grafana/ui';
import { css, cx } from 'emotion';
import DangerouslySetHtmlContent from 'dangerously-set-html-content';

interface Props extends PanelProps<TextOptions> {}

interface State {
  html: string;
}

export class TextPanel extends PureComponent<Props, State> {
  constructor(props: Props) {
    super(props);

this.state = {
      html: this.processContent(props.options),
    };
  }

updateHTML = debounce(() => {
    const html = this.processContent(this.props.options);
    if (html !== this.state.html) {
      this.setState({ html });
    }
  }, 150);

componentDidUpdate(prevProps: Props) {
    // Since any change could be referenced in a template variable,
    // This needs to process everytime (with debounce)
    this.updateHTML();
  }

prepareHTML(html: string): string {
    const { replaceVariables } = this.props;

html = replaceVariables(html, {}, 'html');

return config.disableSanitizeHtml ? html : textUtil.sanitize(html);
  }

prepareText(content: string): string {
    return this.prepareHTML(
      content
        .replace(/&/g, '&amp;')
        .replace(/>/g, '&gt;')
        .replace(/</g, '&lt;')
        .replace(/\n/g, '<br/>')
    );
  }

prepareMarkdown(content: string): string {
    return this.prepareHTML(renderMarkdown(content));
  }

processContent(options: TextOptions): string {
    const { mode, content } = options;

if (!content) {
      return '';
    }

if (mode === 'markdown') {
      return this.prepareMarkdown(content);
    }
    if (mode === 'html') {
      return this.prepareHTML(content);
    }

return this.prepareText(content);
  }

render() {
    const { html } = this.state;
    const styles = getStyles();
    return <DangerouslySetHtmlContent html={html} className={cx('markdown-html', styles.content)} />;
  }
}

const getStyles = stylesFactory(() => {
  return {
    content: css`
      height: 100%;
    `,
  };
});

文件操作 - TextPanel.tsx

文件: /usr/share/grafana/public/app/plugins/panel/text/TextPanel.tsx

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