/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
import { Inject, Injectable, InjectionToken, Optional, SkipSelf } from '@angular/core';
import { Subject } from 'rxjs';
import { debounceTime, distinctUntilChanged, startWith } from 'rxjs/operators';
import * as i0 from "@angular/core";
/** Injection token used for an implementation of MenuStack. */
export const MENU_STACK = new InjectionToken('cdk-menu-stack');
/** Provider that provides the parent menu stack, or a new menu stack if there is no parent one. */
export const PARENT_OR_NEW_MENU_STACK_PROVIDER = {
    provide: MENU_STACK,
    deps: [[new Optional(), new SkipSelf(), new Inject(MENU_STACK)]],
    useFactory: (parentMenuStack) => parentMenuStack || new MenuStack(),
};
/** Provider that provides the parent menu stack, or a new inline menu stack if there is no parent one. */
export const PARENT_OR_NEW_INLINE_MENU_STACK_PROVIDER = (orientation) => ({
    provide: MENU_STACK,
    deps: [[new Optional(), new SkipSelf(), new Inject(MENU_STACK)]],
    useFactory: (parentMenuStack) => parentMenuStack || MenuStack.inline(orientation),
});
/** The next available menu stack ID. */
let nextId = 0;
/**
 * MenuStack allows subscribers to listen for close events (when a MenuStackItem is popped off
 * of the stack) in order to perform closing actions. Upon the MenuStack being empty it emits
 * from the `empty` observable specifying the next focus action which the listener should perform
 * as requested by the closer.
 */
export class MenuStack {
    constructor() {
        /** The ID of this menu stack. */
        this.id = `${nextId++}`;
        /** All MenuStackItems tracked by this MenuStack. */
        this._elements = [];
        /** Emits the element which was popped off of the stack when requested by a closer. */
        this._close = new Subject();
        /** Emits once the MenuStack has become empty after popping off elements. */
        this._empty = new Subject();
        /** Emits whether any menu in the menu stack has focus. */
        this._hasFocus = new Subject();
        /** Observable which emits the MenuStackItem which has been requested to close. */
        this.closed = this._close;
        /** Observable which emits whether any menu in the menu stack has focus. */
        this.hasFocus = this._hasFocus.pipe(startWith(false), debounceTime(0), distinctUntilChanged());
        /**
         * Observable which emits when the MenuStack is empty after popping off the last element. It
         * emits a FocusNext event which specifies the action the closer has requested the listener
         * perform.
         */
        this.emptied = this._empty;
        /**
         * Whether the inline menu associated with this menu stack is vertical or horizontal.
         * `null` indicates there is no inline menu associated with this menu stack.
         */
        this._inlineMenuOrientation = null;
    }
    /** Creates a menu stack that originates from an inline menu. */
    static inline(orientation) {
        const stack = new MenuStack();
        stack._inlineMenuOrientation = orientation;
        return stack;
    }
    /**
     * Adds an item to the menu stack.
     * @param menu the MenuStackItem to put on the stack.
     */
    push(menu) {
        this._elements.push(menu);
    }
    /**
     * Pop items off of the stack up to and including `lastItem` and emit each on the close
     * observable. If the stack is empty or `lastItem` is not on the stack it does nothing.
     * @param lastItem the last item to pop off the stack.
     * @param options Options that configure behavior on close.
     */
    close(lastItem, options) {
        const { focusNextOnEmpty, focusParentTrigger } = { ...options };
        if (this._elements.indexOf(lastItem) >= 0) {
            let poppedElement;
            do {
                poppedElement = this._elements.pop();
                this._close.next({ item: poppedElement, focusParentTrigger });
            } while (poppedElement !== lastItem);
            if (this.isEmpty()) {
                this._empty.next(focusNextOnEmpty);
            }
        }
    }
    /**
     * Pop items off of the stack up to but excluding `lastItem` and emit each on the close
     * observable. If the stack is empty or `lastItem` is not on the stack it does nothing.
     * @param lastItem the element which should be left on the stack
     * @return whether or not an item was removed from the stack
     */
    closeSubMenuOf(lastItem) {
        let removed = false;
        if (this._elements.indexOf(lastItem) >= 0) {
            removed = this.peek() !== lastItem;
            while (this.peek() !== lastItem) {
                this._close.next({ item: this._elements.pop() });
            }
        }
        return removed;
    }
    /**
     * Pop off all MenuStackItems and emit each one on the `close` observable one by one.
     * @param options Options that configure behavior on close.
     */
    closeAll(options) {
        const { focusNextOnEmpty, focusParentTrigger } = { ...options };
        if (!this.isEmpty()) {
            while (!this.isEmpty()) {
                const menuStackItem = this._elements.pop();
                if (menuStackItem) {
                    this._close.next({ item: menuStackItem, focusParentTrigger });
                }
            }
            this._empty.next(focusNextOnEmpty);
        }
    }
    /** Return true if this stack is empty. */
    isEmpty() {
        return !this._elements.length;
    }
    /** Return the length of the stack. */
    length() {
        return this._elements.length;
    }
    /** Get the top most element on the stack. */
    peek() {
        return this._elements[this._elements.length - 1];
    }
    /** Whether the menu stack is associated with an inline menu. */
    hasInlineMenu() {
        return this._inlineMenuOrientation != null;
    }
    /** The orientation of the associated inline menu. */
    inlineMenuOrientation() {
        return this._inlineMenuOrientation;
    }
    /** Sets whether the menu stack contains the focused element. */
    setHasFocus(hasFocus) {
        this._hasFocus.next(hasFocus);
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MenuStack, deps: [], target: i0.ɵɵFactoryTarget.Injectable }); }
    static { this.ɵprov = i0.ɵɵngDeclareInjectable({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MenuStack }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: MenuStack, decorators: [{
            type: Injectable
        }] });
//# sourceMappingURL=data:application/json;base64,{"version":3,"file":"menu-stack.js","sourceRoot":"","sources":["../../../../../../src/cdk/menu/menu-stack.ts"],"names":[],"mappings":"AAAA;;;;;;GAMG;AAEH,OAAO,EAAC,MAAM,EAAE,UAAU,EAAE,cAAc,EAAE,QAAQ,EAAE,QAAQ,EAAC,MAAM,eAAe,CAAC;AACrF,OAAO,EAAa,OAAO,EAAC,MAAM,MAAM,CAAC;AACzC,OAAO,EAAC,YAAY,EAAE,oBAAoB,EAAE,SAAS,EAAC,MAAM,gBAAgB,CAAC;;AAe7E,+DAA+D;AAC/D,MAAM,CAAC,MAAM,UAAU,GAAG,IAAI,cAAc,CAAY,gBAAgB,CAAC,CAAC;AAE1E,mGAAmG;AACnG,MAAM,CAAC,MAAM,iCAAiC,GAAG;IAC/C,OAAO,EAAE,UAAU;IACnB,IAAI,EAAE,CAAC,CAAC,IAAI,QAAQ,EAAE,EAAE,IAAI,QAAQ,EAAE,EAAE,IAAI,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC;IAChE,UAAU,EAAE,CAAC,eAA2B,EAAE,EAAE,CAAC,eAAe,IAAI,IAAI,SAAS,EAAE;CAChF,CAAC;AAEF,0GAA0G;AAC1G,MAAM,CAAC,MAAM,wCAAwC,GAAG,CACtD,WAAsC,EACtC,EAAE,CAAC,CAAC;IACJ,OAAO,EAAE,UAAU;IACnB,IAAI,EAAE,CAAC,CAAC,IAAI,QAAQ,EAAE,EAAE,IAAI,QAAQ,EAAE,EAAE,IAAI,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC;IAChE,UAAU,EAAE,CAAC,eAA2B,EAAE,EAAE,CAAC,eAAe,IAAI,SAAS,CAAC,MAAM,CAAC,WAAW,CAAC;CAC9F,CAAC,CAAC;AAkBH,wCAAwC;AACxC,IAAI,MAAM,GAAG,CAAC,CAAC;AAEf;;;;;GAKG;AAEH,MAAM,OAAO,SAAS;IADtB;QAEE,iCAAiC;QACxB,OAAE,GAAG,GAAG,MAAM,EAAE,EAAE,CAAC;QAE5B,oDAAoD;QACnC,cAAS,GAAoB,EAAE,CAAC;QAEjD,sFAAsF;QACrE,WAAM,GAAG,IAAI,OAAO,EAAuB,CAAC;QAE7D,4EAA4E;QAC3D,WAAM,GAAG,IAAI,OAAO,EAAyB,CAAC;QAE/D,0DAA0D;QACzC,cAAS,GAAG,IAAI,OAAO,EAAW,CAAC;QAEpD,kFAAkF;QACzE,WAAM,GAAoC,IAAI,CAAC,MAAM,CAAC;QAE/D,2EAA2E;QAClE,aAAQ,GAAwB,IAAI,CAAC,SAAS,CAAC,IAAI,CAC1D,SAAS,CAAC,KAAK,CAAC,EAChB,YAAY,CAAC,CAAC,CAAC,EACf,oBAAoB,EAAE,CACvB,CAAC;QAEF;;;;WAIG;QACM,YAAO,GAAsC,IAAI,CAAC,MAAM,CAAC;QAElE;;;WAGG;QACK,2BAAsB,GAAqC,IAAI,CAAC;KAqGzE;IAnGC,gEAAgE;IAChE,MAAM,CAAC,MAAM,CAAC,WAAsC;QAClD,MAAM,KAAK,GAAG,IAAI,SAAS,EAAE,CAAC;QAC9B,KAAK,CAAC,sBAAsB,GAAG,WAAW,CAAC;QAC3C,OAAO,KAAK,CAAC;IACf,CAAC;IAED;;;OAGG;IACH,IAAI,CAAC,IAAmB;QACtB,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;IAC5B,CAAC;IAED;;;;;OAKG;IACH,KAAK,CAAC,QAAuB,EAAE,OAAsB;QACnD,MAAM,EAAC,gBAAgB,EAAE,kBAAkB,EAAC,GAAG,EAAC,GAAG,OAAO,EAAC,CAAC;QAC5D,IAAI,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE;YACzC,IAAI,aAAa,CAAC;YAClB,GAAG;gBACD,aAAa,GAAG,IAAI,CAAC,SAAS,CAAC,GAAG,EAAG,CAAC;gBACtC,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,EAAC,IAAI,EAAE,aAAa,EAAE,kBAAkB,EAAC,CAAC,CAAC;aAC7D,QAAQ,aAAa,KAAK,QAAQ,EAAE;YAErC,IAAI,IAAI,CAAC,OAAO,EAAE,EAAE;gBAClB,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,gBAAgB,CAAC,CAAC;aACpC;SACF;IACH,CAAC;IAED;;;;;OAKG;IACH,cAAc,CAAC,QAAuB;QACpC,IAAI,OAAO,GAAG,KAAK,CAAC;QACpB,IAAI,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE;YACzC,OAAO,GAAG,IAAI,CAAC,IAAI,EAAE,KAAK,QAAQ,CAAC;YACnC,OAAO,IAAI,CAAC,IAAI,EAAE,KAAK,QAAQ,EAAE;gBAC/B,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,EAAC,IAAI,EAAE,IAAI,CAAC,SAAS,CAAC,GAAG,EAAG,EAAC,CAAC,CAAC;aACjD;SACF;QACD,OAAO,OAAO,CAAC;IACjB,CAAC;IAED;;;OAGG;IACH,QAAQ,CAAC,OAAsB;QAC7B,MAAM,EAAC,gBAAgB,EAAE,kBAAkB,EAAC,GAAG,EAAC,GAAG,OAAO,EAAC,CAAC;QAC5D,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,EAAE;YACnB,OAAO,CAAC,IAAI,CAAC,OAAO,EAAE,EAAE;gBACtB,MAAM,aAAa,GAAG,IAAI,CAAC,SAAS,CAAC,GAAG,EAAE,CAAC;gBAC3C,IAAI,aAAa,EAAE;oBACjB,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,EAAC,IAAI,EAAE,aAAa,EAAE,kBAAkB,EAAC,CAAC,CAAC;iBAC7D;aACF;YACD,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,gBAAgB,CAAC,CAAC;SACpC;IACH,CAAC;IAED,0CAA0C;IAC1C,OAAO;QACL,OAAO,CAAC,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC;IAChC,CAAC;IAED,sCAAsC;IACtC,MAAM;QACJ,OAAO,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC;IAC/B,CAAC;IAED,6CAA6C;IAC7C,IAAI;QACF,OAAO,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,SAAS,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IACnD,CAAC;IAED,gEAAgE;IAChE,aAAa;QACX,OAAO,IAAI,CAAC,sBAAsB,IAAI,IAAI,CAAC;IAC7C,CAAC;IAED,qDAAqD;IACrD,qBAAqB;QACnB,OAAO,IAAI,CAAC,sBAAsB,CAAC;IACrC,CAAC;IAED,gEAAgE;IAChE,WAAW,CAAC,QAAiB;QAC3B,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC;IAChC,CAAC;8GAzIU,SAAS;kHAAT,SAAS;;2FAAT,SAAS;kBADrB,UAAU","sourcesContent":["/**\n * @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {Inject, Injectable, InjectionToken, Optional, SkipSelf} from '@angular/core';\nimport {Observable, Subject} from 'rxjs';\nimport {debounceTime, distinctUntilChanged, startWith} from 'rxjs/operators';\n\n/** The relative item in the inline menu to focus after closing all popup menus. */\nexport const enum FocusNext {\n  nextItem,\n  previousItem,\n  currentItem,\n}\n\n/** A single item (menu) in the menu stack. */\nexport interface MenuStackItem {\n  /** A reference to the menu stack this menu stack item belongs to. */\n  menuStack?: MenuStack;\n}\n\n/** Injection token used for an implementation of MenuStack. */\nexport const MENU_STACK = new InjectionToken<MenuStack>('cdk-menu-stack');\n\n/** Provider that provides the parent menu stack, or a new menu stack if there is no parent one. */\nexport const PARENT_OR_NEW_MENU_STACK_PROVIDER = {\n  provide: MENU_STACK,\n  deps: [[new Optional(), new SkipSelf(), new Inject(MENU_STACK)]],\n  useFactory: (parentMenuStack?: MenuStack) => parentMenuStack || new MenuStack(),\n};\n\n/** Provider that provides the parent menu stack, or a new inline menu stack if there is no parent one. */\nexport const PARENT_OR_NEW_INLINE_MENU_STACK_PROVIDER = (\n  orientation: 'vertical' | 'horizontal',\n) => ({\n  provide: MENU_STACK,\n  deps: [[new Optional(), new SkipSelf(), new Inject(MENU_STACK)]],\n  useFactory: (parentMenuStack?: MenuStack) => parentMenuStack || MenuStack.inline(orientation),\n});\n\n/** Options that can be provided to the close or closeAll methods. */\nexport interface CloseOptions {\n  /** The element to focus next if the close operation causes the menu stack to become empty. */\n  focusNextOnEmpty?: FocusNext;\n  /** Whether to focus the parent trigger after closing the menu. */\n  focusParentTrigger?: boolean;\n}\n\n/** Event dispatched when a menu is closed. */\nexport interface MenuStackCloseEvent {\n  /** The menu being closed. */\n  item: MenuStackItem;\n  /** Whether to focus the parent trigger after closing the menu. */\n  focusParentTrigger?: boolean;\n}\n\n/** The next available menu stack ID. */\nlet nextId = 0;\n\n/**\n * MenuStack allows subscribers to listen for close events (when a MenuStackItem is popped off\n * of the stack) in order to perform closing actions. Upon the MenuStack being empty it emits\n * from the `empty` observable specifying the next focus action which the listener should perform\n * as requested by the closer.\n */\n@Injectable()\nexport class MenuStack {\n  /** The ID of this menu stack. */\n  readonly id = `${nextId++}`;\n\n  /** All MenuStackItems tracked by this MenuStack. */\n  private readonly _elements: MenuStackItem[] = [];\n\n  /** Emits the element which was popped off of the stack when requested by a closer. */\n  private readonly _close = new Subject<MenuStackCloseEvent>();\n\n  /** Emits once the MenuStack has become empty after popping off elements. */\n  private readonly _empty = new Subject<FocusNext | undefined>();\n\n  /** Emits whether any menu in the menu stack has focus. */\n  private readonly _hasFocus = new Subject<boolean>();\n\n  /** Observable which emits the MenuStackItem which has been requested to close. */\n  readonly closed: Observable<MenuStackCloseEvent> = this._close;\n\n  /** Observable which emits whether any menu in the menu stack has focus. */\n  readonly hasFocus: Observable<boolean> = this._hasFocus.pipe(\n    startWith(false),\n    debounceTime(0),\n    distinctUntilChanged(),\n  );\n\n  /**\n   * Observable which emits when the MenuStack is empty after popping off the last element. It\n   * emits a FocusNext event which specifies the action the closer has requested the listener\n   * perform.\n   */\n  readonly emptied: Observable<FocusNext | undefined> = this._empty;\n\n  /**\n   * Whether the inline menu associated with this menu stack is vertical or horizontal.\n   * `null` indicates there is no inline menu associated with this menu stack.\n   */\n  private _inlineMenuOrientation: 'vertical' | 'horizontal' | null = null;\n\n  /** Creates a menu stack that originates from an inline menu. */\n  static inline(orientation: 'vertical' | 'horizontal') {\n    const stack = new MenuStack();\n    stack._inlineMenuOrientation = orientation;\n    return stack;\n  }\n\n  /**\n   * Adds an item to the menu stack.\n   * @param menu the MenuStackItem to put on the stack.\n   */\n  push(menu: MenuStackItem) {\n    this._elements.push(menu);\n  }\n\n  /**\n   * Pop items off of the stack up to and including `lastItem` and emit each on the close\n   * observable. If the stack is empty or `lastItem` is not on the stack it does nothing.\n   * @param lastItem the last item to pop off the stack.\n   * @param options Options that configure behavior on close.\n   */\n  close(lastItem: MenuStackItem, options?: CloseOptions) {\n    const {focusNextOnEmpty, focusParentTrigger} = {...options};\n    if (this._elements.indexOf(lastItem) >= 0) {\n      let poppedElement;\n      do {\n        poppedElement = this._elements.pop()!;\n        this._close.next({item: poppedElement, focusParentTrigger});\n      } while (poppedElement !== lastItem);\n\n      if (this.isEmpty()) {\n        this._empty.next(focusNextOnEmpty);\n      }\n    }\n  }\n\n  /**\n   * Pop items off of the stack up to but excluding `lastItem` and emit each on the close\n   * observable. If the stack is empty or `lastItem` is not on the stack it does nothing.\n   * @param lastItem the element which should be left on the stack\n   * @return whether or not an item was removed from the stack\n   */\n  closeSubMenuOf(lastItem: MenuStackItem) {\n    let removed = false;\n    if (this._elements.indexOf(lastItem) >= 0) {\n      removed = this.peek() !== lastItem;\n      while (this.peek() !== lastItem) {\n        this._close.next({item: this._elements.pop()!});\n      }\n    }\n    return removed;\n  }\n\n  /**\n   * Pop off all MenuStackItems and emit each one on the `close` observable one by one.\n   * @param options Options that configure behavior on close.\n   */\n  closeAll(options?: CloseOptions) {\n    const {focusNextOnEmpty, focusParentTrigger} = {...options};\n    if (!this.isEmpty()) {\n      while (!this.isEmpty()) {\n        const menuStackItem = this._elements.pop();\n        if (menuStackItem) {\n          this._close.next({item: menuStackItem, focusParentTrigger});\n        }\n      }\n      this._empty.next(focusNextOnEmpty);\n    }\n  }\n\n  /** Return true if this stack is empty. */\n  isEmpty() {\n    return !this._elements.length;\n  }\n\n  /** Return the length of the stack. */\n  length() {\n    return this._elements.length;\n  }\n\n  /** Get the top most element on the stack. */\n  peek(): MenuStackItem | undefined {\n    return this._elements[this._elements.length - 1];\n  }\n\n  /** Whether the menu stack is associated with an inline menu. */\n  hasInlineMenu() {\n    return this._inlineMenuOrientation != null;\n  }\n\n  /** The orientation of the associated inline menu. */\n  inlineMenuOrientation() {\n    return this._inlineMenuOrientation;\n  }\n\n  /** Sets whether the menu stack contains the focused element. */\n  setHasFocus(hasFocus: boolean) {\n    this._hasFocus.next(hasFocus);\n  }\n}\n"]}