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@helga-agency/overlay

v2.2.0

Published

Overlay component that can be opened and closed via OverlayButtons

Downloads

62

Readme

Overlay

Overlay component that can be opened and closed via OverlayButtons. Supports:

  • close when user presses esc (optional)
  • close when user clicks outside (optional)
  • disable body scroll
  • any number of open/close/toggle buttons that control the overlay
  • the use of any background element through a selector and any class on that background element to make it visible

Important

Load <overlay-component> before <overlay-button-component> as the button needs the overlay to exist before it is setup (setModel will not be called if <overlay-component> does not exist).

If you want to disable scroll when the overlay is open, use Body Scroll Lock:

import { disableBodyScroll, enableBodyScroll } from '/body-scroll-lock/lib/bodyScrollLock.es6.js';
const overlay = document.querySelector('#my-overlay-identifier');
overlay.addEventListener('openOverlay', disableBodyScroll);
overlay.addEventListener('closeOverlay', enableBodyScroll);

Example

<overlay-button-component data-overlay-name="myOverlay" data-type="open">
    Open Restricted
</overlay-button-component>

<overlay-component
    data-name="myOverlay"
    data-background-selector=".overlay-background"
    data-background-visible-class-name="visible"
    data-visible-class-name="visible"
    data-disable-esc="true"
    data-disable-click-outside="true"
>
    <overlay-button-component data-overlay-name="myOverlay" data-type="close">
        ×
    </overlay-button-component>
</overlay-component>

<!-- Import all components you use -->
<script src="@joinbox/overlay/OverlayElement.js"></script>
<script src="@joinbox/overlay/OverlayButtonElement.js"></script>

Components

Overlay

Exposed Element

<overlay-component></overlay-component>

Attributes

  • data-name (required, String): Names the overlay; the name must exactly match attribute data-overlay-name on overlay-button-component to be opened/closed by it.
  • data-visible-class-name (required, String): Contains the class name that will be added to the overlay when it is opened and removed when it is closed.
  • data-background-selector (optional, String): Takes any CSS selector and defines the element that will receive data-background-visible-class-name when the overlay opens.
  • data-background-visible-class-name (optional, String). Defines the class that will be added to the background element when the overlay is opened and removed when the overlay is closed.
  • data-disable-esc (optional, Boolean i.e. can be set without attribute or not at all): Prevents the overlay from being closed when users press the ESC key. Defaults to false.
  • data-disable-click-outside (optional, Boolean i.e. can be set without attribute or not at all): Prevents the overlay from being closed when users click with their mouse outside of the overlay. Defaults to false.

Events

The overlay emits the following events:

  • overlayOpened: Dispatched after an overlay is opened; bubbles and has a detail object with a name property that corresponds to the overlay's data-name attribute value.
  • overlayClosed: Dispatched after an overlay is closed; bubbles and has a detail object with a name property that corresponds to the overlay's data-name attribute value.

The overlay listens to the following events (on window):

  • openOverlay: Open an overlay; must contain a detail object with a name property that corresponds to the overlay's name.
  • closeOverlay: Close an overlay; must contain a detail object with a name property that corresponds to the overlay's name.

Overlay Button

Exposed Element

<overlay-button-component></overlay-button-component>

Attributes

  • data-overlay-name (required, String): Contains the name of the overlay that should be opened or closed. Make sure it exactly matches the attribute data-name on overlay-component.
  • data-type (required, String): Is either close, if the button shall only close the overlay, open if the button shall only open the overlay or toggle if the button shall toggle the overlay. Defaults to toggle.
  • data-open-class-name (optional, String): Class name that will be added to the button when the overlay is opened.
  • data-closed-class-name (optional, String): Class name that will be added to the button when the overlay is closed.

Migration

From v1 to v2

  • Events openOverlay and closeOverlay (emitted after the overlay is opened or closed) are renamed to overlayOpened and overlayClosed (because the original events are now used to open or close the overlay, not to communicate its state change retrospectively)