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// Showing / Hiding the backdrop menu
/**
* Class for adding functionality to backdrop elements
*/
export default class Backdrop {
/**
* Registers all important elements in the backdrop
* @param {string} backdropMenu ID of Backdrop Menu
* @param {string} frontLayer ID of Front Layer
* @param {string} menuButton ID of Show / Hide Menu Button
*/
constructor(backdropMenu, frontLayer, menuButton) {
this.ids = {backdropMenu, frontLayer, menuButton};
this.backdrop = document.getElementById(backdropMenu);
this.frontLayer = document.getElementById(frontLayer);
this.menuButton = document.getElementById(menuButton);
}
/**
* Registers all neccessary events
*/
register() {
this.registerButtonEvent();
this.registerFrontLayerEvent();
}
/**
* Reloads the object
*/
refresh() {
this.backdrop = document.getElementById(this.ids.backdropMenu);
this.frontLayer = document.getElementById(this.ids.frontLayer);
this.menuButton = document.getElementById(this.ids.menuButton);
this.register();
}
/**
* Registers showing / hiding through menu button
*/
registerButtonEvent() {
this.menuButton.addEventListener('click', () => {
// Hide / Unhide Backdrop Menu
if (this.backdrop.classList.contains('hidden')) {
this.backdrop.classList.remove('hidden');
} else {
this.backdrop.classList.add('hidden');
}
// Set open state for menu button
if (this.menuButton.classList.contains('open')) {
this.menuButton.classList.remove('open');
} else {
this.menuButton.classList.add('open');
}
});
}
/**
* Registers hiding, when clicking on the front layer
*/
registerFrontLayerEvent() {
// Hide menu when interacting with front layer
this.frontLayer.addEventListener('click', () => {
this.backdrop.classList.add('hidden');
this.menuButton.classList.remove('open');
});
}
}
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