// src/dismissable-layer/layer-stack.tsx
import { getDocument } from "@kobalte/utils";
var DATA_TOP_LAYER_ATTR = "data-kb-top-layer";
var originalBodyPointerEvents;
var hasDisabledBodyPointerEvents = false;
var layers = [];
function indexOf(node) {
  return layers.findIndex((layer) => layer.node === node);
}
function find(node) {
  return layers[indexOf(node)];
}
function isTopMostLayer(node) {
  return layers[layers.length - 1].node === node;
}
function getPointerBlockingLayers() {
  return layers.filter((layer) => layer.isPointerBlocking);
}
function getTopMostPointerBlockingLayer() {
  return [...getPointerBlockingLayers()].slice(-1)[0];
}
function hasPointerBlockingLayer() {
  return getPointerBlockingLayers().length > 0;
}
function isBelowPointerBlockingLayer(node) {
  const highestBlockingIndex = indexOf(getTopMostPointerBlockingLayer()?.node);
  return indexOf(node) < highestBlockingIndex;
}
function addLayer(layer) {
  layers.push(layer);
}
function removeLayer(node) {
  const index = indexOf(node);
  if (index < 0) {
    return;
  }
  layers.splice(index, 1);
}
function assignPointerEventToLayers() {
  for (const { node } of layers) {
    node.style.pointerEvents = isBelowPointerBlockingLayer(node) ? "none" : "auto";
  }
}
function disableBodyPointerEvents(node) {
  if (hasPointerBlockingLayer() && !hasDisabledBodyPointerEvents) {
    const ownerDocument = getDocument(node);
    originalBodyPointerEvents = document.body.style.pointerEvents;
    ownerDocument.body.style.pointerEvents = "none";
    hasDisabledBodyPointerEvents = true;
  }
}
function restoreBodyPointerEvents(node) {
  if (hasPointerBlockingLayer()) {
    return;
  }
  const ownerDocument = getDocument(node);
  ownerDocument.body.style.pointerEvents = originalBodyPointerEvents;
  if (ownerDocument.body.style.length === 0) {
    ownerDocument.body.removeAttribute("style");
  }
  hasDisabledBodyPointerEvents = false;
}
var layerStack = {
  layers,
  isTopMostLayer,
  hasPointerBlockingLayer,
  isBelowPointerBlockingLayer,
  addLayer,
  removeLayer,
  indexOf,
  find,
  assignPointerEventToLayers,
  disableBodyPointerEvents,
  restoreBodyPointerEvents
};

export {
  DATA_TOP_LAYER_ATTR,
  layerStack
};