A Simple and flexible modal dialog component for React JS

react-st-modal

React St Modal is a simple and flexible library for implementing modal dialogs.

Features

• Simple and easy to use api
• Compatible with mobile devices
• Implemented standard interaction functions: alert, confirm, prompt
• Async/await syntax
• Customization via css variables
• Accessibility and focus control
• Dynamic call of modal dialogs, which does not require definition in code
• No third party libraries

Getting started

Installation

You can install the latest version using npm:

  npm install react-st-modal

Overview

To implement the functionality of modal dialogs this library has four functions and one react component.

Functions Alert, Confirm, Prompt implement the behavior of existing browser functions.

Function CustomDialog shows any JSX element in a modal window.

React component StaticDialog is used to define modals in your JSX element.

Interaction: (Alert, Prompt, Confirm)

All interaction functions are async.

Method name	Parameters	Return type	Description
Alert	body: JSX.Element (string), title?: string, buttonText?: string	void	Shows a message (body) and waits for the user to press button
Confirm	body: JSX.Element (string), title?: string, okButtonText?: string, cancelButtonText?: string	boolean	Shows a modal window with a text (body) and two buttons: OK and Cancel. The result is true if OK is pressed and false otherwise
Prompt	title?: string, options?: PromptConfig	string	Shows a modal window with a text message, an input field for the visitor, and the buttons OK/Cancel

PromptConfig allows you to specify the following optional parameters:

• defaultValue: string | number
• isRequired: boolean
• errorText: string
• okButtonText: string
• cancelButtonText: string

Example

import { Confirm } from 'react-st-modal';

function ConfirmExample() {
  return (
    <div>
      <button
        onClick={async () => {
          const result = await Confirm('Сonfirmation text', 
            'Сonfirmation title');
          
          if (result) {
            // Сonfirmation confirmed
          } else {
            // Сonfirmation not confirmed
          }
        }}
      >
          Show confirm
      </button>
    </div>
  );
}

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CustomDialog

CustomDialog is an async function that shows any element in a modal window.

Parameters

• body: JSX.Element - the element shown in the modal dialog
• options?: CustomConfig - specified options

CustomConfig allows you to specify the following optional parameters:

• title?: string - modal dialog title
• className?: string - css className
• defaultBodyOverflow?: string (default: visible) - default value to body css property overflow
• showCloseIcon?: boolean (default: false) - show close button in the top corner of the window
• isCanClose?: boolean (default: true) - is it possible to close the dialog by clicking on the overlay or ESC button
• isFocusLock?: boolean (default: true) - lock focus on modal
• isBodyScrollLocked?: boolean (default: true) - content scrolling lock
• replaceScrollBar?: boolean (default: true) - whether to replace the body scrollbar with a placeholder
• scrollBarPlaceholderColor?: string (default: #eeeeee) - default color for the scrollbar placeholder
• onAfterOpen?: () => void - event called after the dialog was opened

To control a dialog from an inner element, use useDialog<T> hook

useDialog<T> returns an object containing:

• isOpen: boolean - the current state of the modal
• close: (result?: T) => void - function that closes the dialog and returns the result

Example

import { CustomDialog, useDialog } from 'react-st-modal';

// The element to be shown in the modal window
function CustomDialogContent() {
  // use this hook to control the dialog
  const dialog = useDialog();

  const [value, setValue] = useState();

  return (
    <div>
      <input
        type="text"
        onChange={(e) => {
          setValue(e.target.value);
        }}
      />
      <button
        onClick={() => {
          // Сlose the dialog and return the value
          dialog.close(value);
        }}
      >
        Custom button
      </button>
    </div>
  );
}

function CustomExample() {
  return (
    <div>
      <button
        onClick={async () => {
          const result = await CustomDialog(
            <CustomDialogContent />,
            {
              title: 'Custom Dialog',
              showCloseIcon: true,
            }
          );
        }}
      >
        Custom
      </button>
    </div>
  );
}

---

StaticDialog

StaticDialog it is a React component that used to define modals in your JSX element

Props

• isOpen: boolean - describing if the modal should be shown or not
• children: React.ReactNode - the element shown in the modal dialog
• title?: string - modal dialog title
• className?: string - css className
• defaultBodyOverflow?: string (default: visible) - default value to body css property overflow
• showCloseIcon?: boolean (default: false) - show close button in the top corner of the window
• isCanClose?: boolean (default: true) - is it possible to close the dialog by clicking on the overlay or ESC button
• isFocusLock?: boolean (default: true) - lock focus on modal
• isBodyScrollLocked?: boolean (default: true) - content scrolling lock
• replaceScrollBar?: boolean (default: true) - whether to replace the body scrollbar with a placeholder
• scrollBarPlaceholderColor?: string (default: #eeeeee) - default color for the scrollbar placeholder
• onAfterClose?: (result?: T) => void - event called after the dialog was closed
• onAfterOpen?: () => void - event called after the dialog was opened

Example

import { StaticDialog, useDialog } from 'react-st-modal';

function CustomStaticExample() {
  const [isOpen, setOpen] = useState(false);

  return (
    <div>
      <StaticDialog
        isOpen={isOpen}
        title="Custom static dialog"
        onAfterClose={(result) => {
          setOpen(false);
          // do something with dialog result
        }}
    >
        {/* see previous demo */}
          <CustomDialogContent />
      </StaticDialog>

      <div>
        <button
          onClick={() => {
              setOpen(true);
          }}
        >
          Custom static
        </button>
      <div>
    </div>
    );
}

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UI Elements

To decorate your dialogs, you can use the following components: ModalButton, ModalContent, ModalFooter

Example

import { ModalContent, ModalFooter, ModalButton, useDialog } from 'react-st-modal';

function CustomDialogContent() {
  const dialog = useDialog();

  const [value, setValue] = useState<string>();

  return (
      <div>
        <ModalContent>
          <div>Custom dialog content</div>
          <label>
            Input value:
            <input
              type="text"
              onChange={(e) => {
                setValue(e.target.value);
              }}
            />
          </label>
        </ModalContent>
        <ModalFooter>
          <ModalButton
            onClick={() => {
              dialog.close(value);
            }}
          >
            Custom button
          </ModalButton>
        </ModalFooter>
      </div>
  );
}

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GitHub