phaser/src/dom/AddToDOM.js
2019-01-15 16:20:22 +00:00

60 lines
1.7 KiB
JavaScript

/**
* @author Richard Davey <rich@photonstorm.com>
* @copyright 2019 Photon Storm Ltd.
* @license {@link https://github.com/photonstorm/phaser/blob/master/license.txt|MIT License}
*/
/**
* Adds the given element to the DOM. If a parent is provided the element is added as a child of the parent, providing it was able to access it.
* If no parent was given it falls back to using `document.body`.
*
* @function Phaser.DOM.AddToDOM
* @since 3.0.0
*
* @param {HTMLElement} element - The element to be added to the DOM. Usually a Canvas object.
* @param {(string|HTMLElement)} [parent] - The parent in which to add the element. Can be a string which is passed to `getElementById` or an actual DOM object.
* @param {boolean} [overflowHidden=true] - Whether or not to hide overflowing content inside the parent.
*
* @return {HTMLElement} The element that was added to the DOM.
*/
var AddToDOM = function (element, parent, overflowHidden)
{
if (overflowHidden === undefined) { overflowHidden = true; }
var target;
if (parent)
{
if (typeof parent === 'string')
{
// Hopefully an element ID
target = document.getElementById(parent);
}
else if (typeof parent === 'object' && parent.nodeType === 1)
{
// Quick test for a HTMLElement
target = parent;
}
}
else if (element.parentElement)
{
return element;
}
// Fallback, covers an invalid ID and a non HTMLElement object
if (!target)
{
target = document.body;
}
if (overflowHidden && target.style)
{
target.style.overflow = 'hidden';
}
target.appendChild(element);
return element;
};
module.exports = AddToDOM;