如何在 Fluent UI Dialog 组件中居中按钮？

问题描述

Fluent UI 中的 Dialog 组件具有 DialogFooter。我想在那个页脚里面放一个按钮，我希望它在中心。如何实现？我无法将其从默认位置移动。

示例代码（取自 [官方文档][https://developer.microsoft.com/en-us/fluentui#/controls/web/dialog#IDialogStyles]，稍作修改）。最重要的部分应该在代码的底部：

import * as React from 'react';
import { Dialog,DialogFooter } from 'office-ui-fabric-react/lib/Dialog';
import { DefaultButton,PrimaryButton } from 'office-ui-fabric-react/lib/Button';
import { ChoiceGroup } from 'office-ui-fabric-react/lib/ChoiceGroup';
import { useBoolean } from '@uifabric/react-hooks';

const modelProps = {
  isBlocking: true,topOffsetFixed: true,};

const options = [
  {
    key: 'A',iconProps: { iconName: 'CalendarDay' },text: 'Day',},{
    key: 'B',iconProps: { iconName: 'CalendarWeek' },text: 'Week',{
    key: 'C',iconProps: { iconName: 'Calendar' },text: 'Month',];

export const DialogTopOffsetFixedExample: React.FunctionComponent = () => {
  const [hideDialog,{ toggle: toggleHideDialog }] = useBoolean(true);
  const [optionSelected,setOptionSelected] = React.useState('A');

  const onChange = (ev: React.FormEvent<HTMLInputElement>,option: any): void => {
    setOptionSelected(option.key);
  };

  return (
    <>
      <DefaultButton secondaryText="Opens the Sample Dialog" onClick={toggleHideDialog} text="Open Dialog" />
      <Dialog hidden={hideDialog} onDismiss={toggleHideDialog} modalProps={modelProps}>
        <ChoiceGroup
          label="Pick one icon"
          options={options}
          // eslint-disable-next-line react/jsx-no-bind
          onChange={onChange}
          required
        />
        {optionSelected === 'A' && (
          <div>
            <h1>Description</h1>
            <div>
              {' '}
              Lorem ipsum dolor sit amet,consectetur adipiscing elit,sed do eiusmod tempor incididunt ut labore et
              dolore magna aliqua. Ut enim ad minim veniam,quis nostrud exercitation ullamco laboris nisi ut aliquip ex
              ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu
              fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident,sunt in culpa qui officia deserunt
              mollit anim id est laborum.{' '}
            </div>
          </div>
        )}
        {optionSelected === 'B' && (
          <div>
            <h1>Description</h1>
            <div>
              {' '}
              Lorem ipsum dolor sit amet,quis nostrud exercitation ullamco laboris nisi ut aliquip ex
              ea commodo consequat.{' '}
            </div>
          </div>
        )}
        {optionSelected === 'C' && (
          <div>
            <h1>Description</h1>
          </div>
        )}
        <DialogFooter>
          <PrimaryButton onClick={toggleHideDialog} text="Save" />
        </DialogFooter>
      </Dialog>
    </>
  );
};

看起来像这样：

如何将按钮移动到中心，在那里我绘制蓝色“圆圈”？

解决方法

您可以在 DialogFooter 中放置一个 flex 容器并开始将按钮居中放置。
举个例子：

<DialogFooter>
  <div style={{display: "flex",justifyContent: "center"}}>
     <PrimaryButton onClick={toggleHideDialog} text="Save" />
  </div>
</DialogFooter>