/*!
 * All material copyright ESRI, All Rights Reserved, unless otherwise specified.
 * See https://github.com/Esri/calcite-components/blob/master/LICENSE.md for details.
 * v1.0.0-beta.97
 */
import { proxyCustomElement, HTMLElement, createEvent, h, Host } from '@stencil/core/internal/client/index.js';
import { f as focusElement, n as nodeListToArray, l as getRootNode } from './dom.js';
import { T as TreeSelectionMode } from './interfaces2.js';

function isTreeItem(element) {
  return element === null || element === void 0 ? void 0 : element.matches("calcite-tree-item");
}
function getEnabledSiblingItem(el, direction) {
  const directionProp = direction === "down" ? "nextElementSibling" : "previousElementSibling";
  let currentEl = el;
  let enabledEl = null;
  while (isTreeItem(currentEl)) {
    if (!currentEl.disabled) {
      enabledEl = currentEl;
      break;
    }
    currentEl = currentEl[directionProp];
  }
  return enabledEl;
}

const treeCss = "@keyframes in{0%{opacity:0}100%{opacity:1}}@keyframes in-down{0%{opacity:0;transform:translate3D(0, -5px, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-up{0%{opacity:0;transform:translate3D(0, 5px, 0)}100%{opacity:1;transform:translate3D(0, 0, 0)}}@keyframes in-scale{0%{opacity:0;transform:scale3D(0.95, 0.95, 1)}100%{opacity:1;transform:scale3D(1, 1, 1)}}:root{--calcite-animation-timing:calc(150ms * var(--calcite-internal-duration-factor));--calcite-internal-duration-factor:var(--calcite-duration-factor, 1);--calcite-internal-animation-timing-fast:calc(100ms * var(--calcite-internal-duration-factor));--calcite-internal-animation-timing-medium:calc(200ms * var(--calcite-internal-duration-factor));--calcite-internal-animation-timing-slow:calc(300ms * var(--calcite-internal-duration-factor))}.calcite-animate{opacity:0;animation-fill-mode:both;animation-duration:var(--calcite-animation-timing)}.calcite-animate__in{animation-name:in}.calcite-animate__in-down{animation-name:in-down}.calcite-animate__in-up{animation-name:in-up}.calcite-animate__in-scale{animation-name:in-scale}@media (prefers-reduced-motion: reduce){:root{--calcite-internal-duration-factor:0.01}}:root{--calcite-floating-ui-transition:var(--calcite-animation-timing)}:host([hidden]){display:none}:host{display:block}:host(:focus){outline:2px solid transparent;outline-offset:2px}";

const Tree = /*@__PURE__*/ proxyCustomElement(class extends HTMLElement {
  constructor() {
    super();
    this.__registerHost();
    this.__attachShadow();
    this.calciteTreeSelect = createEvent(this, "calciteTreeSelect", 6);
    //--------------------------------------------------------------------------
    //
    //  Properties
    //
    //--------------------------------------------------------------------------
    /** Displays indentation guide lines. */
    this.lines = false;
    /**
     * Display input
     *
     * @deprecated Use `selectionMode="ancestors"` for checkbox input.
     */
    this.inputEnabled = false;
    /** Specifies the size of the component. */
    this.scale = "m";
    /**
     * Customize how the component's selection works.
     *
     * @default "single"
     * @see [TreeSelectionMode](https://github.com/Esri/calcite-components/blob/master/src/components/tree/interfaces.ts#L5)
     */
    this.selectionMode = TreeSelectionMode.Single;
  }
  //--------------------------------------------------------------------------
  //
  //  Lifecycle
  //
  //--------------------------------------------------------------------------
  componentWillRender() {
    var _a;
    const parent = (_a = this.el.parentElement) === null || _a === void 0 ? void 0 : _a.closest("calcite-tree");
    this.lines = parent ? parent.lines : this.lines;
    this.scale = parent ? parent.scale : this.scale;
    this.selectionMode = parent ? parent.selectionMode : this.selectionMode;
    this.child = !!parent;
  }
  render() {
    return (h(Host, { "aria-multiselectable": this.child
        ? undefined
        : (this.selectionMode === TreeSelectionMode.Multi ||
          this.selectionMode === TreeSelectionMode.MultiChildren).toString(), role: !this.child ? "tree" : undefined, tabIndex: this.getRootTabIndex() }, h("slot", null)));
  }
  //--------------------------------------------------------------------------
  //
  //  Event Listeners
  //
  //--------------------------------------------------------------------------
  onFocus() {
    if (!this.child) {
      const focusTarget = this.el.querySelector("calcite-tree-item[selected]:not([disabled])") || this.el.querySelector("calcite-tree-item:not([disabled])");
      focusElement(focusTarget);
    }
  }
  onFocusIn(event) {
    const focusedFromRootOrOutsideTree = event.relatedTarget === this.el || !this.el.contains(event.relatedTarget);
    if (focusedFromRootOrOutsideTree) {
      // gives user the ability to tab into external elements (modifying tabindex property will not work in firefox)
      this.el.removeAttribute("tabindex");
    }
  }
  onFocusOut(event) {
    const willFocusOutsideTree = !this.el.contains(event.relatedTarget);
    if (willFocusOutsideTree) {
      this.el.tabIndex = this.getRootTabIndex();
    }
  }
  onClick(event) {
    const target = event.target;
    const childItems = nodeListToArray(target.querySelectorAll("calcite-tree-item"));
    if (this.child) {
      return;
    }
    if (!this.child) {
      event.preventDefault();
      event.stopPropagation();
    }
    if (this.selectionMode === TreeSelectionMode.Ancestors && !this.child) {
      this.updateAncestorTree(event);
      return;
    }
    const isNoneSelectionMode = this.selectionMode === TreeSelectionMode.None;
    const shouldSelect = this.selectionMode !== null &&
      (!target.hasChildren ||
        (target.hasChildren &&
          (this.selectionMode === TreeSelectionMode.Children ||
            this.selectionMode === TreeSelectionMode.MultiChildren)));
    const shouldModifyToCurrentSelection = !isNoneSelectionMode &&
      event.detail.modifyCurrentSelection &&
      (this.selectionMode === TreeSelectionMode.Multi ||
        this.selectionMode === TreeSelectionMode.MultiChildren);
    const shouldSelectChildren = this.selectionMode === TreeSelectionMode.MultiChildren ||
      this.selectionMode === TreeSelectionMode.Children;
    const shouldClearCurrentSelection = !shouldModifyToCurrentSelection &&
      (((this.selectionMode === TreeSelectionMode.Single ||
        this.selectionMode === TreeSelectionMode.Multi) &&
        childItems.length <= 0) ||
        this.selectionMode === TreeSelectionMode.Children ||
        this.selectionMode === TreeSelectionMode.MultiChildren);
    const shouldExpandTarget = this.selectionMode === TreeSelectionMode.Children ||
      this.selectionMode === TreeSelectionMode.MultiChildren;
    if (!this.child) {
      const targetItems = [];
      if (shouldSelect) {
        targetItems.push(target);
      }
      if (shouldSelectChildren) {
        childItems.forEach((treeItem) => {
          targetItems.push(treeItem);
        });
      }
      if (shouldClearCurrentSelection) {
        const selectedItems = nodeListToArray(this.el.querySelectorAll("calcite-tree-item[selected]"));
        selectedItems.forEach((treeItem) => {
          if (!targetItems.includes(treeItem)) {
            treeItem.selected = false;
          }
        });
      }
      if (shouldExpandTarget && !event.detail.forceToggle) {
        target.expanded = true;
      }
      if (shouldModifyToCurrentSelection) {
        window.getSelection().removeAllRanges();
      }
      if ((shouldModifyToCurrentSelection && target.selected) ||
        (shouldSelectChildren && event.detail.forceToggle)) {
        targetItems.forEach((treeItem) => {
          if (!treeItem.disabled) {
            treeItem.selected = false;
          }
        });
      }
      else if (!isNoneSelectionMode) {
        targetItems.forEach((treeItem) => {
          if (!treeItem.disabled) {
            treeItem.selected = true;
          }
        });
      }
    }
    const selected = isNoneSelectionMode
      ? [target]
      : nodeListToArray(this.el.querySelectorAll("calcite-tree-item")).filter((i) => i.selected);
    this.calciteTreeSelect.emit({ selected });
    event.stopPropagation();
  }
  keyDownHandler(event) {
    var _a;
    const root = this.el.closest("calcite-tree:not([child])");
    const target = event.target;
    if (!(root === this.el && target.tagName === "CALCITE-TREE-ITEM" && this.el.contains(target))) {
      return;
    }
    if (event.key === "ArrowDown") {
      const next = getEnabledSiblingItem(target.nextElementSibling, "down");
      if (next) {
        next.focus();
        event.preventDefault();
      }
      return;
    }
    if (event.key === "ArrowUp") {
      const previous = getEnabledSiblingItem(target.previousElementSibling, "up");
      if (previous) {
        previous.focus();
        event.preventDefault();
      }
    }
    if (event.key === "ArrowLeft" && !target.disabled) {
      // When focus is on an open node, closes the node.
      if (target.hasChildren && target.expanded) {
        target.expanded = false;
        event.preventDefault();
        return;
      }
      // When focus is on a child node that is also either an end node or a closed node, moves focus to its parent node.
      const parentItem = target.parentElement.closest("calcite-tree-item");
      if (parentItem && (!target.hasChildren || target.expanded === false)) {
        parentItem.focus();
        event.preventDefault();
        return;
      }
      // When focus is on a root node that is also either an end node or a closed node, does nothing.
      return;
    }
    if (event.key === "ArrowRight" && !target.disabled) {
      if (target.hasChildren) {
        if (target.expanded && getRootNode(this.el).activeElement === target) {
          // When focus is on an open node, moves focus to the first child node.
          (_a = getEnabledSiblingItem(target.querySelector("calcite-tree-item"), "down")) === null || _a === void 0 ? void 0 : _a.focus();
          event.preventDefault();
        }
        else {
          // When focus is on a closed node, opens the node; focus does not move.
          target.expanded = true;
          event.preventDefault();
        }
      }
      return;
    }
  }
  updateAncestorTree(event) {
    const item = event.target;
    if (item.disabled) {
      return;
    }
    const ancestors = [];
    let parent = item.parentElement.closest("calcite-tree-item");
    while (parent) {
      ancestors.push(parent);
      parent = parent.parentElement.closest("calcite-tree-item");
    }
    const childItems = Array.from(item.querySelectorAll("calcite-tree-item:not([disabled])"));
    const childItemsWithNoChildren = childItems.filter((child) => !child.hasChildren);
    const childItemsWithChildren = childItems.filter((child) => child.hasChildren);
    const futureSelected = item.hasChildren
      ? !(item.selected || item.indeterminate)
      : !item.selected;
    childItemsWithNoChildren.forEach((el) => {
      el.selected = futureSelected;
      el.indeterminate = false;
    });
    function updateItemState(childItems, item) {
      const selected = childItems.filter((child) => child.selected);
      const unselected = childItems.filter((child) => !child.selected);
      item.selected = selected.length === childItems.length;
      item.indeterminate = selected.length > 0 && unselected.length > 0;
    }
    childItemsWithChildren.forEach((el) => {
      const directChildItems = Array.from(el.querySelectorAll(":scope > calcite-tree > calcite-tree-item"));
      updateItemState(directChildItems, el);
    });
    if (item.hasChildren) {
      updateItemState(childItems, item);
    }
    else {
      item.selected = futureSelected;
      item.indeterminate = false;
    }
    ancestors.forEach((ancestor) => {
      const descendants = nodeListToArray(ancestor.querySelectorAll("calcite-tree-item"));
      const activeDescendants = descendants.filter((el) => el.selected);
      if (activeDescendants.length === 0) {
        ancestor.selected = false;
        ancestor.indeterminate = false;
        return;
      }
      const indeterminate = activeDescendants.length < descendants.length;
      ancestor.indeterminate = indeterminate;
      ancestor.selected = !indeterminate;
    });
    this.calciteTreeSelect.emit({
      selected: nodeListToArray(this.el.querySelectorAll("calcite-tree-item")).filter((i) => i.selected)
    });
  }
  // --------------------------------------------------------------------------
  //
  //  Private Methods
  //
  //--------------------------------------------------------------------------
  getRootTabIndex() {
    return !this.child ? 0 : -1;
  }
  get el() { return this; }
  static get style() { return treeCss; }
}, [1, "calcite-tree", {
    "lines": [1540],
    "inputEnabled": [4, "input-enabled"],
    "child": [1540],
    "scale": [1537],
    "selectionMode": [1537, "selection-mode"]
  }, [[0, "focus", "onFocus"], [0, "focusin", "onFocusIn"], [0, "focusout", "onFocusOut"], [0, "calciteInternalTreeItemSelect", "onClick"], [0, "keydown", "keyDownHandler"]]]);
function defineCustomElement$1() {
  if (typeof customElements === "undefined") {
    return;
  }
  const components = ["calcite-tree"];
  components.forEach(tagName => { switch (tagName) {
    case "calcite-tree":
      if (!customElements.get(tagName)) {
        customElements.define(tagName, Tree);
      }
      break;
  } });
}
defineCustomElement$1();

const CalciteTree = Tree;
const defineCustomElement = defineCustomElement$1;

export { CalciteTree, defineCustomElement };