/**
 * @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 { ComponentFactoryResolver, Directive, EventEmitter, NgModule, Output, TemplateRef, ViewContainerRef } from '@angular/core';

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Throws an exception when attempting to attach a null portal to a host.
 * \@docs-private
 * @return {?}
 */
function throwNullPortalError() {
    throw Error('Must provide a portal to attach');
}
/**
 * Throws an exception when attempting to attach a portal to a host that is already attached.
 * \@docs-private
 * @return {?}
 */
function throwPortalAlreadyAttachedError() {
    throw Error('Host already has a portal attached');
}
/**
 * Throws an exception when attempting to attach a portal to an already-disposed host.
 * \@docs-private
 * @return {?}
 */
function throwPortalOutletAlreadyDisposedError() {
    throw Error('This PortalOutlet has already been disposed');
}
/**
 * Throws an exception when attempting to attach an unknown portal type.
 * \@docs-private
 * @return {?}
 */
function throwUnknownPortalTypeError() {
    throw Error('Attempting to attach an unknown Portal type. BasePortalOutlet accepts either ' +
        'a ComponentPortal or a TemplatePortal.');
}
/**
 * Throws an exception when attempting to attach a portal to a null host.
 * \@docs-private
 * @return {?}
 */
function throwNullPortalOutletError() {
    throw Error('Attempting to attach a portal to a null PortalOutlet');
}
/**
 * Throws an exception when attempting to detach a portal that is not attached.
 * \@docs-private
 * @return {?}
 */
function throwNoPortalAttachedError() {
    throw Error('Attempting to detach a portal that is not attached to a host');
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * A `Portal` is something that you want to render somewhere else.
 * It can be attach to / detached from a `PortalOutlet`.
 * @abstract
 * @template T
 */
class Portal {
    /**
     * Attach this portal to a host.
     * @param {?} host
     * @return {?}
     */
    attach(host) {
        if (host == null) {
            throwNullPortalOutletError();
        }
        if (host.hasAttached()) {
            throwPortalAlreadyAttachedError();
        }
        this._attachedHost = host;
        return (/** @type {?} */ (host.attach(this)));
    }
    /**
     * Detach this portal from its host
     * @return {?}
     */
    detach() {
        /** @type {?} */
        let host = this._attachedHost;
        if (host == null) {
            throwNoPortalAttachedError();
        }
        else {
            this._attachedHost = null;
            host.detach();
        }
    }
    /**
     * Whether this portal is attached to a host.
     * @return {?}
     */
    get isAttached() {
        return this._attachedHost != null;
    }
    /**
     * Sets the PortalOutlet reference without performing `attach()`. This is used directly by
     * the PortalOutlet when it is performing an `attach()` or `detach()`.
     * @param {?} host
     * @return {?}
     */
    setAttachedHost(host) {
        this._attachedHost = host;
    }
}
/**
 * A `ComponentPortal` is a portal that instantiates some Component upon attachment.
 * @template T
 */
class ComponentPortal extends Portal {
    /**
     * @param {?} component
     * @param {?=} viewContainerRef
     * @param {?=} injector
     * @param {?=} componentFactoryResolver
     */
    constructor(component, viewContainerRef, injector, componentFactoryResolver) {
        super();
        this.component = component;
        this.viewContainerRef = viewContainerRef;
        this.injector = injector;
        this.componentFactoryResolver = componentFactoryResolver;
    }
}
/**
 * A `TemplatePortal` is a portal that represents some embedded template (TemplateRef).
 * @template C
 */
class TemplatePortal extends Portal {
    /**
     * @param {?} template
     * @param {?} viewContainerRef
     * @param {?=} context
     */
    constructor(template, viewContainerRef, context) {
        super();
        this.templateRef = template;
        this.viewContainerRef = viewContainerRef;
        this.context = context;
    }
    /**
     * @return {?}
     */
    get origin() {
        return this.templateRef.elementRef;
    }
    /**
     * Attach the the portal to the provided `PortalOutlet`.
     * When a context is provided it will override the `context` property of the `TemplatePortal`
     * instance.
     * @param {?} host
     * @param {?=} context
     * @return {?}
     */
    attach(host, context = this.context) {
        this.context = context;
        return super.attach(host);
    }
    /**
     * @return {?}
     */
    detach() {
        this.context = undefined;
        return super.detach();
    }
}
/**
 * Partial implementation of PortalOutlet that handles attaching
 * ComponentPortal and TemplatePortal.
 * @abstract
 */
class BasePortalOutlet {
    constructor() {
        /**
         * Whether this host has already been permanently disposed.
         */
        this._isDisposed = false;
    }
    /**
     * Whether this host has an attached portal.
     * @return {?}
     */
    hasAttached() {
        return !!this._attachedPortal;
    }
    /**
     * Attaches a portal.
     * @param {?} portal
     * @return {?}
     */
    attach(portal) {
        if (!portal) {
            throwNullPortalError();
        }
        if (this.hasAttached()) {
            throwPortalAlreadyAttachedError();
        }
        if (this._isDisposed) {
            throwPortalOutletAlreadyDisposedError();
        }
        if (portal instanceof ComponentPortal) {
            this._attachedPortal = portal;
            return this.attachComponentPortal(portal);
        }
        else if (portal instanceof TemplatePortal) {
            this._attachedPortal = portal;
            return this.attachTemplatePortal(portal);
        }
        throwUnknownPortalTypeError();
    }
    /**
     * Detaches a previously attached portal.
     * @return {?}
     */
    detach() {
        if (this._attachedPortal) {
            this._attachedPortal.setAttachedHost(null);
            this._attachedPortal = null;
        }
        this._invokeDisposeFn();
    }
    /**
     * Permanently dispose of this portal host.
     * @return {?}
     */
    dispose() {
        if (this.hasAttached()) {
            this.detach();
        }
        this._invokeDisposeFn();
        this._isDisposed = true;
    }
    /**
     * \@docs-private
     * @param {?} fn
     * @return {?}
     */
    setDisposeFn(fn) {
        this._disposeFn = fn;
    }
    /**
     * @private
     * @return {?}
     */
    _invokeDisposeFn() {
        if (this._disposeFn) {
            this._disposeFn();
            this._disposeFn = null;
        }
    }
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * A PortalOutlet for attaching portals to an arbitrary DOM element outside of the Angular
 * application context.
 */
class DomPortalOutlet extends BasePortalOutlet {
    /**
     * @param {?} outletElement
     * @param {?} _componentFactoryResolver
     * @param {?} _appRef
     * @param {?} _defaultInjector
     */
    constructor(outletElement, _componentFactoryResolver, _appRef, _defaultInjector) {
        super();
        this.outletElement = outletElement;
        this._componentFactoryResolver = _componentFactoryResolver;
        this._appRef = _appRef;
        this._defaultInjector = _defaultInjector;
    }
    /**
     * Attach the given ComponentPortal to DOM element using the ComponentFactoryResolver.
     * @template T
     * @param {?} portal Portal to be attached
     * @return {?} Reference to the created component.
     */
    attachComponentPortal(portal) {
        /** @type {?} */
        const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;
        /** @type {?} */
        const componentFactory = resolver.resolveComponentFactory(portal.component);
        /** @type {?} */
        let componentRef;
        // If the portal specifies a ViewContainerRef, we will use that as the attachment point
        // for the component (in terms of Angular's component tree, not rendering).
        // When the ViewContainerRef is missing, we use the factory to create the component directly
        // and then manually attach the view to the application.
        if (portal.viewContainerRef) {
            componentRef = portal.viewContainerRef.createComponent(componentFactory, portal.viewContainerRef.length, portal.injector || portal.viewContainerRef.injector);
            this.setDisposeFn(() => componentRef.destroy());
        }
        else {
            componentRef = componentFactory.create(portal.injector || this._defaultInjector);
            this._appRef.attachView(componentRef.hostView);
            this.setDisposeFn(() => {
                this._appRef.detachView(componentRef.hostView);
                componentRef.destroy();
            });
        }
        // At this point the component has been instantiated, so we move it to the location in the DOM
        // where we want it to be rendered.
        this.outletElement.appendChild(this._getComponentRootNode(componentRef));
        return componentRef;
    }
    /**
     * Attaches a template portal to the DOM as an embedded view.
     * @template C
     * @param {?} portal Portal to be attached.
     * @return {?} Reference to the created embedded view.
     */
    attachTemplatePortal(portal) {
        /** @type {?} */
        let viewContainer = portal.viewContainerRef;
        /** @type {?} */
        let viewRef = viewContainer.createEmbeddedView(portal.templateRef, portal.context);
        viewRef.detectChanges();
        // The method `createEmbeddedView` will add the view as a child of the viewContainer.
        // But for the DomPortalOutlet the view can be added everywhere in the DOM
        // (e.g Overlay Container) To move the view to the specified host element. We just
        // re-append the existing root nodes.
        viewRef.rootNodes.forEach(rootNode => this.outletElement.appendChild(rootNode));
        this.setDisposeFn((() => {
            /** @type {?} */
            let index = viewContainer.indexOf(viewRef);
            if (index !== -1) {
                viewContainer.remove(index);
            }
        }));
        // TODO(jelbourn): Return locals from view.
        return viewRef;
    }
    /**
     * Clears out a portal from the DOM.
     * @return {?}
     */
    dispose() {
        super.dispose();
        if (this.outletElement.parentNode != null) {
            this.outletElement.parentNode.removeChild(this.outletElement);
        }
    }
    /**
     * Gets the root HTMLElement for an instantiated component.
     * @private
     * @param {?} componentRef
     * @return {?}
     */
    _getComponentRootNode(componentRef) {
        return (/** @type {?} */ (((/** @type {?} */ (componentRef.hostView))).rootNodes[0]));
    }
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */
/**
 * Directive version of a `TemplatePortal`. Because the directive *is* a TemplatePortal,
 * the directive instance itself can be attached to a host, enabling declarative use of portals.
 */
class CdkPortal extends TemplatePortal {
    /**
     * @param {?} templateRef
     * @param {?} viewContainerRef
     */
    constructor(templateRef, viewContainerRef) {
        super(templateRef, viewContainerRef);
    }
}
CdkPortal.decorators = [
    { type: Directive, args: [{
                selector: '[cdk-portal], [cdkPortal], [portal]',
                exportAs: 'cdkPortal',
            },] },
];
/** @nocollapse */
CdkPortal.ctorParameters = () => [
    { type: TemplateRef },
    { type: ViewContainerRef }
];
/**
 * Directive version of a PortalOutlet. Because the directive *is* a PortalOutlet, portals can be
 * directly attached to it, enabling declarative use.
 *
 * Usage:
 * `<ng-template [cdkPortalOutlet]="greeting"></ng-template>`
 */
class CdkPortalOutlet extends BasePortalOutlet {
    /**
     * @param {?} _componentFactoryResolver
     * @param {?} _viewContainerRef
     */
    constructor(_componentFactoryResolver, _viewContainerRef) {
        super();
        this._componentFactoryResolver = _componentFactoryResolver;
        this._viewContainerRef = _viewContainerRef;
        /**
         * Whether the portal component is initialized.
         */
        this._isInitialized = false;
        /**
         * Emits when a portal is attached to the outlet.
         */
        this.attached = new EventEmitter();
    }
    /**
     * Portal associated with the Portal outlet.
     * @return {?}
     */
    get portal() {
        return this._attachedPortal;
    }
    /**
     * @param {?} portal
     * @return {?}
     */
    set portal(portal) {
        // Ignore the cases where the `portal` is set to a falsy value before the lifecycle hooks have
        // run. This handles the cases where the user might do something like `<div cdkPortalOutlet>`
        // and attach a portal programmatically in the parent component. When Angular does the first CD
        // round, it will fire the setter with empty string, causing the user's content to be cleared.
        if (this.hasAttached() && !portal && !this._isInitialized) {
            return;
        }
        if (this.hasAttached()) {
            super.detach();
        }
        if (portal) {
            super.attach(portal);
        }
        this._attachedPortal = portal;
    }
    /**
     * Component or view reference that is attached to the portal.
     * @return {?}
     */
    get attachedRef() {
        return this._attachedRef;
    }
    /**
     * @return {?}
     */
    ngOnInit() {
        this._isInitialized = true;
    }
    /**
     * @return {?}
     */
    ngOnDestroy() {
        super.dispose();
        this._attachedPortal = null;
        this._attachedRef = null;
    }
    /**
     * Attach the given ComponentPortal to this PortalOutlet using the ComponentFactoryResolver.
     *
     * @template T
     * @param {?} portal Portal to be attached to the portal outlet.
     * @return {?} Reference to the created component.
     */
    attachComponentPortal(portal) {
        portal.setAttachedHost(this);
        // If the portal specifies an origin, use that as the logical location of the component
        // in the application tree. Otherwise use the location of this PortalOutlet.
        /** @type {?} */
        const viewContainerRef = portal.viewContainerRef != null ?
            portal.viewContainerRef :
            this._viewContainerRef;
        /** @type {?} */
        const resolver = portal.componentFactoryResolver || this._componentFactoryResolver;
        /** @type {?} */
        const componentFactory = resolver.resolveComponentFactory(portal.component);
        /** @type {?} */
        const ref = viewContainerRef.createComponent(componentFactory, viewContainerRef.length, portal.injector || viewContainerRef.injector);
        super.setDisposeFn(() => ref.destroy());
        this._attachedPortal = portal;
        this._attachedRef = ref;
        this.attached.emit(ref);
        return ref;
    }
    /**
     * Attach the given TemplatePortal to this PortlHost as an embedded View.
     * @template C
     * @param {?} portal Portal to be attached.
     * @return {?} Reference to the created embedded view.
     */
    attachTemplatePortal(portal) {
        portal.setAttachedHost(this);
        /** @type {?} */
        const viewRef = this._viewContainerRef.createEmbeddedView(portal.templateRef, portal.context);
        super.setDisposeFn(() => this._viewContainerRef.clear());
        this._attachedPortal = portal;
        this._attachedRef = viewRef;
        this.attached.emit(viewRef);
        return viewRef;
    }
}
CdkPortalOutlet.decorators = [
    { type: Directive, args: [{
                selector: '[cdkPortalOutlet], [cdkPortalHost], [portalHost]',
                exportAs: 'cdkPortalOutlet, cdkPortalHost',
                inputs: ['portal: cdkPortalOutlet']
            },] },
];
/** @nocollapse */
CdkPortalOutlet.ctorParameters = () => [
    { type: ComponentFactoryResolver },
    { type: ViewContainerRef }
];
CdkPortalOutlet.propDecorators = {
    attached: [{ type: Output }]
};
class PortalModule {
}
PortalModule.decorators = [
    { type: NgModule, args: [{
                exports: [CdkPortal, CdkPortalOutlet],
                declarations: [CdkPortal, CdkPortalOutlet],
            },] },
];

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * Custom injector to be used when providing custom
 * injection tokens to components inside a portal.
 * \@docs-private
 */
class PortalInjector {
    /**
     * @param {?} _parentInjector
     * @param {?} _customTokens
     */
    constructor(_parentInjector, _customTokens) {
        this._parentInjector = _parentInjector;
        this._customTokens = _customTokens;
    }
    /**
     * @param {?} token
     * @param {?=} notFoundValue
     * @return {?}
     */
    get(token, notFoundValue) {
        /** @type {?} */
        const value = this._customTokens.get(token);
        if (typeof value !== 'undefined') {
            return value;
        }
        return this._parentInjector.get(token, notFoundValue);
    }
}

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

/**
 * @fileoverview added by tsickle
 * @suppress {checkTypes,extraRequire,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
 */

export { DomPortalOutlet as DomPortalHost, CdkPortalOutlet as PortalHostDirective, CdkPortal as TemplatePortalDirective, BasePortalOutlet as BasePortalHost, Portal, ComponentPortal, TemplatePortal, BasePortalOutlet, DomPortalOutlet, CdkPortal, CdkPortalOutlet, PortalModule, PortalInjector };
//# sourceMappingURL=portal.js.map
