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this.node.getElementsByClassName('sui-dialog-content');\n\n    content[0].className = 'sui-dialog-content sui-bounce-out';\n\n    overlay[0].className = 'sui-dialog-overlay sui-fade-out';\n\n    this.shown = false;\n    // This has been set so there is enough time for the animation to show\n    var timeout_node = this.node;\n    setTimeout(function () {\n\t\ttimeout_node.setAttribute('aria-hidden', 'true');\n\t}, 300);\n\n    // Iterate over the targets to enable them by remove their `aria-hidden`\n    // attribute or resetting them to their initial value\n    this._targets.forEach(function (target) {\n      var original = target.getAttribute('data-a11y-dialog-original');\n\n\n      if (original) {\n        target.setAttribute('aria-hidden', original);\n        target.removeAttribute('data-a11y-dialog-original');\n      } else {\n        target.removeAttribute('aria-hidden');\n      }\n    });\n\n    // If their was a focused element before the dialog was opened, restore the\n    // focus back to it\n    if (focusedBeforeDialog) {\n      focusedBeforeDialog.focus();\n    }\n\n    // Remove the focus event listener to the body element and stop listening\n    // for specific key presses\n    document.body.removeEventListener('focus', this._maintainFocus, true);\n    document.removeEventListener('keydown', this._bindKeypress);\n\n    // Remove overlay class to document body.\n    document.getElementsByTagName( 'html' )[0].classList.remove( 'sui-has-overlay' );\n\n    // Execute all callbacks registered for the `hide` event\n    this._fire('hide', event);\n\n    return this;\n  };\n\n  /**\n   * Destroy the current instance (after making sure the dialog has been hidden)\n   * and remove all associated listeners from dialog openers and closers\n   *\n   * @return {this}\n   */\n  A11yDialog.prototype.destroy = function () {\n    // Hide the dialog to avoid destroying an open instance\n    this.hide();\n\n    // Remove the click event listener from all dialog openers\n    this._openers.forEach(function (opener) {\n      opener.removeEventListener('click', this._show);\n    }.bind(this));\n\n    // Remove the click event listener from all dialog closers\n    this._closers.forEach(function (closer) {\n      closer.removeEventListener('click', this._hide);\n    }.bind(this));\n\n    // Execute all callbacks registered for the `destroy` event\n    this._fire('destroy');\n\n    // Keep an object of listener types mapped to callback functions\n    this._listeners = {};\n\n    return this;\n  };\n\n  /**\n   * Register a new callback for the given event type\n   *\n   * @param {string} type\n   * @param {Function} handler\n   */\n  A11yDialog.prototype.on = function (type, handler) {\n    if (typeof this._listeners[type] === 'undefined') {\n      this._listeners[type] = [];\n    }\n\n    this._listeners[type].push(handler);\n\n    return this;\n  };\n\n  /**\n   * Unregister an existing callback for the given event type\n   *\n   * @param {string} type\n   * @param {Function} handler\n   */\n  A11yDialog.prototype.off = function (type, handler) {\n    var index = this._listeners[type].indexOf(handler);\n\n    if (index > -1) {\n      this._listeners[type].splice(index, 1);\n    }\n\n    return this;\n  };\n\n  /**\n   * Iterate over all registered handlers for given type and call them all with\n   * the dialog element as first argument, event as second argument (if any).\n   *\n   * @access private\n   * @param {string} type\n   * @param {Event} event\n   */\n  A11yDialog.prototype._fire = function (type, event) {\n    var listeners = this._listeners[type] || [];\n\n    listeners.forEach(function (listener) {\n      listener(this.node, event);\n    }.bind(this));\n  };\n\n  /**\n   * Private event handler used when listening to some specific key presses\n   * (namely ESCAPE and TAB)\n   *\n   * @access private\n   * @param {Event} event\n   */\n  A11yDialog.prototype._bindKeypress = function (event) {\n    // If the dialog is shown and the ESCAPE key is being pressed, prevent any\n    // further effects from the ESCAPE key and hide the dialog\n    if (this.shown && event.which === ESCAPE_KEY) {\n      event.preventDefault();\n      this.hide();\n    }\n\n    // If the dialog is shown and the TAB key is being pressed, make sure the\n    // focus stays trapped within the dialog element\n    if (this.shown && event.which === TAB_KEY) {\n      trapTabKey(this.node, event);\n    }\n  };\n\n  /**\n   * Private event handler used when making sure the focus stays within the\n   * currently open dialog\n   *\n   * @access private\n   * @param {Event} event\n   */\n  A11yDialog.prototype._maintainFocus = function (event) {\n    // If the dialog is shown and the focus is not within the dialog element,\n    // move it back to its first focusable child\n    if (this.shown && !this.node.contains(event.target)) {\n      setFocusToFirstItem(this.node);\n    }\n  };\n\n  /**\n   * Convert a NodeList into an array\n   *\n   * @param {NodeList} collection\n   * @return {Array<Element>}\n   */\n  function toArray (collection) {\n    return Array.prototype.slice.call(collection);\n  }\n\n  /**\n   * Query the DOM for nodes matching the given selector, scoped to context (or\n   * the whole document)\n   *\n   * @param {String} selector\n   * @param {Element} [context = document]\n   * @return {Array<Element>}\n   */\n  function $$ (selector, context) {\n    return toArray((context || document).querySelectorAll(selector));\n  }\n\n  /**\n   * Return an array of Element based on given argument (NodeList, Element or\n   * string representing a selector)\n   *\n   * @param {(NodeList | Element | string)} target\n   * @return {Array<Element>}\n   */\n  function collect (target) {\n    if (NodeList.prototype.isPrototypeOf(target)) {\n      return toArray(target);\n    }\n\n    if (Element.prototype.isPrototypeOf(target)) {\n      return [target];\n    }\n\n    if (typeof target === 'string') {\n      return $$(target);\n    }\n  }\n\n  /**\n   * Set the focus to the first focusable child of the given element\n   *\n   * @param {Element} node\n   */\n  function setFocusToFirstItem (node) {\n    var focusableChildren = getFocusableChildren(node);\n\n    if (focusableChildren.length) {\n      focusableChildren[0].focus();\n    }\n  }\n\n  /**\n   * Get the focusable children of the given element\n   *\n   * @param {Element} node\n   * @return {Array<Element>}\n   */\n  function getFocusableChildren (node) {\n    return $$(FOCUSABLE_ELEMENTS.join(','), node).filter(function (child) {\n      return !!(child.offsetWidth || child.offsetHeight || child.getClientRects().length);\n    });\n  }\n\n  /**\n   * Trap the focus inside the given element\n   *\n   * @param {Element} node\n   * @param {Event} event\n   */\n  function trapTabKey (node, event) {\n    var focusableChildren = getFocusableChildren(node);\n    var focusedItemIndex = focusableChildren.indexOf(document.activeElement);\n\n    // If the SHIFT key is being pressed while tabbing (moving backwards) and\n    // the currently focused item is the first one, move the focus to the last\n    // focusable item from the dialog element\n    if (event.shiftKey && focusedItemIndex === 0) {\n      focusableChildren[focusableChildren.length - 1].focus();\n      event.preventDefault();\n    // If the SHIFT key is not being pressed (moving forwards) and the currently\n    // focused item is the last one, move the focus to the first focusable item\n    // from the dialog element\n    } else if (!event.shiftKey && focusedItemIndex === focusableChildren.length - 1) {\n      focusableChildren[0].focus();\n      event.preventDefault();\n    }\n  }\n\n  /**\n   * Retrieve siblings from given element\n   *\n   * @param {Element} node\n   * @return {Array<Element>}\n   */\n  function getSiblings (node) {\n    var nodes = toArray(node.parentNode.childNodes);\n    var siblings = nodes.filter(function (node) {\n      return node.nodeType === 1;\n    });\n\n    siblings.splice(siblings.indexOf(node), 1);\n\n    return siblings;\n  }\n\n  if (typeof module !== 'undefined' && typeof module.exports !== 'undefined') {\n    module.exports = A11yDialog;\n  } else if (typeof define === 'function' && define.amd) {\n    define('A11yDialog', [], function () {\n      return A11yDialog;\n    });\n  } else if (typeof global === 'object') {\n    global.A11yDialog = A11yDialog;\n  }\n}(typeof global !== 'undefined' ? global : window));\n"],"sourceRoot":""}