Package Exports

simplr-dropdown

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Readme

simplr-dropdown

A flexible React dropdown component.

Get started

$ npm install simplr-dropdown --save

$ yarn add simplr-dropdown

Features

Toggles dropdown when clicked on DropdownHeader component
Closes dropdown when clicked outside of DropdownHandler component^*
Closes dropdown when clicked on DropdownSection component
Closes dropdown when clicked Escape button on keyboard
Extendable base components
Supports server side rendering

^* This will not work when click event has stopped propogation (event.stopPropagation()) and therefore window.addEventListener("click", ...) will not receive event.

Simple example

More examples and demo will be soon

import { DropdownHandler, DropdownHeader, DropdownSection } from "simplr-dropdown";

export function DropdownMenu(props: {}) {
    return <DropdownHandler>
        <DropdownHeader>
            Profile
        </DropdownHeader>
        <DropdownSection>
            <ul>
                <li>View profile</li>
                <li>Edit profile</li>
                <li>Settings</li>
                <li>Logout</li>
            </ul>
        </DropdownSection>
    </DropdownHandler>;
}

Components

DropdownHandler

The main component of dropdown. It controls when to show section of dropdown. By default this component uses div element as a container.

import { DropdownHandler } from "simplr-dropdown";

Props

Prop	Type	Default	Description
defaultOpen	boolean	false	Dropdown open state when it will be mounted
open	boolean	undefined	Controlling dropdown from outside
onOpen	DropdownOnOpenCallback	none	Triggers callback when dropdown opens
onClose	DropdownOnCloseCallback	none	Triggers callback when dropdown closes
onToggle	DropdownOnToggleCallback	none	Triggers callback when toggles
toggleOnHeaderClick	boolean	true	Toggles when clicking on `DropdownHeader`
closeOnOutsideClick	boolean	true	Closes when clicked outside of `DropdownHandler` component
closeOnSectionClick	boolean	false	Closes when clicked on `DropdownSection` component
closeOnEscapeClick	function	true	Closes when clicked `Escape` key on keyboard

Methods

These methods can be used when you save component instance.

Method	Description
IsOpen()	Returns boolean if dropdown open or not
Open()	Opens dropdown
Close()	Closes dropdown

Example

export class DropdownExample extends React.Component<{}, {}> {
    private dropdownComponent: DropdownHandler;

    private onButtonClick: React.MouseEventHandler<HTMLButtonElement> = (event) => {
        if (this.dropdownComponent.IsOpen()) {
            this.dropdownComponent.Close();
        } else {
            this.dropdownComponent.Open();
        }
    }

    private setDropdownRef = (component: DropdownHandler) => {
        this.dropdownComponent = component;
    }

    render() {
        return <div>
            <button onClick={this.onButtonClick}>
                Toggle dropdown outside!
            </button>
            <DropdownHandler ref={this.setDropdownRef}>
                <DropdownHeader>
                    {/* ... */}
                </DropdownHeader>
                <DropdownSection>
                    {/* ... */}
                </DropdownSection>
            </DropdownHandler>
        </div>;
    }
}

DropdownHeader

Click on this component will toggle dropdown open state. By default this component uses div element as a container.

import { DropdownHeader } from "simplr-dropdown";

DropdownSection

This component will be show when open state is true otherwise it will render null. By default this component uses div element as a container.

import { DropdownSection } from "simplr-dropdown";

Contracts

import { Contracts } from "simplr-dropdown";

Interfaces

DropdownOnOpenCallback

interface DropdownOnOpenCallback {
    (source: EventSource): void;
}

Arguments

source: EventSource - Event source from where it got triggered

DropdownOnCloseCallback

interface DropdownOnCloseCallback {
    (source: EventSource): void;
}

Arguments

source: EventSource - Event source from where it got triggered

DropdownOnToggleCallback

interface DropdownOnToggleCallback {
    (isOpened: boolean, source: EventSource): void;
}

Arguments

isOpened: boolean - dropdown is opened or not
source: EventSource - Event source from where it got triggered

Enums

EventSource

enum EventSource {
    HeaderClick = 8,    // On DropdownHeader click
    SectionClick = 16,  // On DropdownSection click 
    OutsideClick = 24,  // On outside of Dropdown container element click
    EscapeClick = 32    // Keyboard key escape clicked
}

License

Released under the MIT license.