如何扩展draft-js-emoji-plugin的主题

Question

我需要在draft-js-emoji-plugin中只扩展几个CSS规则。

记录的方法是将theme对象传递给配置：

const theme = {
  emojiSelectButton: 'someclassname'
};
const emojiPlugin = createEmojiPlugin({theme});

不幸的是，这会覆盖整个主题类名而不是添加单个名。基于代码中的注释，此行为是设计的：

// Styles are overwritten instead of merged as merging causes a lot of confusion.
//
// Why? Because when merging a developer needs to know all of the underlying
// styles which needs a deep dive into the code. Merging also makes it prone to
// errors when upgrading as basically every styling change would become a major
// breaking change. 1px of an increased padding can break a whole layout.

In related issue开发人员建议导入draft-js-emoji-plugin/lib/plugin.css并在代码中扩展它。无论如何，这个文件中的每个类名都有后缀（CSS模块），它们可能会被更改，因此它是可靠的。

我不知道如何在不复制整个主题的情况下应用多个文件。

Answer 1

拥有这样的灵活性很好，但重写所有类真的很痛苦。我所做的是将所有类名提取到一个对象，并使用styled-components将classNames插入到css定义中。这样你可以扩展你想要的任何东西，而不用担心造型后缀类（当它们碰到一个版本时它会改变）在这个gist我刚刚复制了draft-js-emoji-plugin的v2.1.1中的所有样式

const theme = {
  emoji: 'my-emoji',
  emojiSuggestions: 'my-emojiSuggestions',
  emojiSuggestionsEntry: 'my-emojiSuggestionsEntry',
  // ...
  emojiSelect: 'emojiSelect',
  emojiSelectButton: 'emojiSelectButton',
  emojiSelectButtonPressed: 'emojiSelectButtonPressed',
}

const StyledEmojiSelectWrapper = styled.div`
  .${theme.emojiSelect} {
      display: inline-block;
    }
  .${theme.emojiSelectButton}, .${theme.emojiSelectButtonPressed} {
    margin: 0;
    padding: 0;
    width: 2.5em;
    height: 1.5em;
    box-sizing: border-box;
    line-height: 1.2em;
    font-size: 1.5em;
    color: #888;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 1.5em;
    cursor: pointer;
  }
  .${theme.emojiSelectButton}:focus, .${theme.emojiSelectButtonPressed}:focus {
    outline: 0;
    /* reset for :focus */
  }
  // ...
`

export const GlobalStyleForEmojiSelect = createGlobalStyle`
  .${theme.emoji} {
    background-position: center;
    //...
  }

export default (props) => (
  <StyledEmojiSelectWrapper>
    <GlobalStyleForEmojiSelect />
    <EmojiSelect /> // lib button component
  </StyledEmojiSelectWrapper>
)