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Filename : utils.js
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export const wrap = (element, wrapper = document.createElement("div")) => {
  if (element.nextSibling) {
    element.parentNode.insertBefore(wrapper, element.nextSibling);
  } else {
    element.parentNode.appendChild(wrapper);
  }

  return wrapper.appendChild(element);
};

export const slideDown = (element, duration = 300) => {
  let display = window.getComputedStyle(element).display;

  if (display === "none") {
    display = "block";
  }

  element.style.transitionProperty = "height";
  element.style.transitionDuration = `${duration}ms`;

  element.style.opacity = 0;
  element.style.display = display;
  let height = element.offsetHeight;

  element.style.height = 0;
  element.style.opacity = 1;
  element.style.overflow = "hidden";

  setTimeout(() => {
    element.style.height = `${height}px`;
  }, 5);

  window.setTimeout(() => {
    element.style.removeProperty("height");
    element.style.removeProperty("overflow");
    element.style.removeProperty("transition-duration");
    element.style.removeProperty("transition-property");
    element.style.removeProperty("opacity");
  }, duration + 50);
};

export const slideUp = (element, duration = 300) => {
  element.style.boxSizing = "border-box";
  element.style.transitionProperty = "height, margin";
  element.style.transitionDuration = `${duration}ms`;
  element.style.height = `${element.offsetHeight}px`;
  element.style.marginTop = 0;
  element.style.marginBottom = 0;
  element.style.overflow = "hidden";

  setTimeout(() => {
    element.style.height = 0;
  }, 5);

  window.setTimeout(() => {
    element.style.display = "none";
    element.style.removeProperty("height");
    element.style.removeProperty("margin-top");
    element.style.removeProperty("margin-bottom");
    element.style.removeProperty("overflow");
    element.style.removeProperty("transition-duration");
    element.style.removeProperty("transition-property");
  }, duration + 50);
};

export const slideToggle = (element, duration) => {
  window.getComputedStyle(element).display === "none"
    ? slideDown(element, duration)
    : slideUp(element, duration);
};

export const fadeIn = (element, _options = {}) => {
  const options = {
    duration: 300,
    display: null,
    opacity: 1,
    callback: null,
  };

  Object.assign(options, _options);

  element.style.opacity = 0;
  element.style.display = options.display || "block";

  setTimeout(() => {
    element.style.transition = `${options.duration}ms opacity ease`;
    element.style.opacity = options.opacity;
  }, 5);

  setTimeout(() => {
    element.style.removeProperty("transition");
    !!options.callback && options.callback();
  }, options.duration + 50);
};

export const fadeOut = (element, _options = {}) => {
  if (element.style.display === "none") {
    return;
  }

  const options = {
    duration: 300,
    display: null,
    opacity: 0,
    callback: null,
  };

  Object.assign(options, _options);

  element.style.opacity = 1;
  element.style.display = options.display || "block";

  setTimeout(() => {
    element.style.transition = `${options.duration}ms opacity ease`;
    element.style.opacity = options.opacity;
  }, 5);

  setTimeout(() => {
    element.style.display = "none";
    element.style.removeProperty("transition");
    !!options.callback && options.callback();
  }, options.duration + 50);
};

export const fadeToggle = (element, options) => {
  window.getComputedStyle(element).display === "none"
    ? fadeIn(element, options)
    : fadeOut(element, options);
};

export const offset = (element) => {
  if (!element.getClientRects().length) {
    return { top: 0, left: 0 };
  }

  // Get document-relative position by adding viewport scroll to viewport-relative gBCR
  const rect = element.getBoundingClientRect();
  const win = element.ownerDocument.defaultView;
  return {
    top: rect.top + win.pageYOffset,
    left: rect.left + win.pageXOffset,
  };
};

export const visible = (element) => {
  if (!element) {
    return false;
  }

  return !!(
    element.offsetWidth ||
    element.offsetHeight ||
    element.getClientRects().length
  );
};

export const getSiblings = (e) => {
  // for collecting siblings
  const siblings = [];

  // if no parent, return no sibling
  if (!e.parentNode) {
    return siblings;
  }

  // first child of the parent node
  let sibling = e.parentNode.firstChild;

  // collecting siblings
  while (sibling) {
    if (sibling.nodeType === 1 && sibling !== e) {
      siblings.push(sibling);
    }

    sibling = sibling.nextSibling;
  }

  return siblings;
};

// Returns true if it is a DOM element
export const isElement = (o) => {
  return typeof HTMLElement === "object"
    ? o instanceof HTMLElement // DOM2
    : o &&
        typeof o === "object" &&
        o !== null &&
        o.nodeType === 1 &&
        typeof o.nodeName === "string";
};

export const isSelectorValid = ((dummyElement) => (selector) => {
  try {
    dummyElement.querySelector(selector);
  } catch {
    return false;
  }
  return true;
})(document.createDocumentFragment());


export const fadeInNav = (element, _options = {}) => {
  const options = {
    duration: 300,
    visibility: "visible",
    opacity: 1,
    callback: null,
  };

  Object.assign(options, _options);

  element.style.opacity = 0;
  element.style.visibility = options.visibility || "visible";

  setTimeout(() => {
    element.style.transition = `${options.duration}ms opacity ease`;
    element.style.opacity = options.opacity;
  }, 5);
};

export const fadeOutNav = (element, _options = {}) => {
  if (element.style.visibility === "hidden") {
    return;
  }

  const options = {
    duration: 300,
    visibility: "hidden",
    opacity: 0,
    callback: null,
  };

  Object.assign(options, _options);

  element.style.opacity = 1;
  element.style.visibility = options.visibility || "visible";

  setTimeout(() => {
    element.style.transition = `${options.duration}ms opacity ease`;
    element.style.opacity = options.opacity;
  }, 5);

  setTimeout(() => {
    element.style.visibility = "hidden";
    element.style.removeProperty("transition");
    !!options.callback && options.callback();
  }, options.duration + 50);
};