@angular2-material/core/overlay/overlay.js

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    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(k, v);
};
import { ComponentFactoryResolver, Injectable } from '@angular/core';
import { OverlayState } from './overlay-state';
import { DomPortalHost } from '../portal/dom-portal-host';
import { OverlayRef } from './overlay-ref';
import { OverlayPositionBuilder } from './position/overlay-position-builder';
import { ViewportRuler } from './position/viewport-ruler';
import { OverlayContainer } from './overlay-container';
/** Next overlay unique ID. */
var nextUniqueId = 0;
/** The default state for newly created overlays. */
var defaultState = new OverlayState();
/**
 * Service to create Overlays. Overlays are dynamically added pieces of floating UI, meant to be
 * used as a low-level building building block for other components. Dialogs, tooltips, menus,
 * selects, etc. can all be built using overlays. The service should primarily be used by authors
 * of re-usable components rather than developers building end-user applications.
 *
 * An overlay *is* a PortalHost, so any kind of Portal can be loaded into one.
 */
export var Overlay = (function () {
    function Overlay(_overlayContainer, _componentFactoryResolver, _positionBuilder) {
        this._overlayContainer = _overlayContainer;
        this._componentFactoryResolver = _componentFactoryResolver;
        this._positionBuilder = _positionBuilder;
    }
    /**
     * Creates an overlay.
     * @param state State to apply to the overlay.
     * @returns A reference to the created overlay.
     */
    Overlay.prototype.create = function (state) {
        if (state === void 0) { state = defaultState; }
        return this._createOverlayRef(this._createPaneElement(), state);
    };
    /**
     * Returns a position builder that can be used, via fluent API,
     * to construct and configure a position strategy.
     */
    Overlay.prototype.position = function () {
        return this._positionBuilder;
    };
    /**
     * Creates the DOM element for an overlay and appends it to the overlay container.
     * @returns Promise resolving to the created element.
     */
    Overlay.prototype._createPaneElement = function () {
        var pane = document.createElement('div');
        pane.id = "md-overlay-" + nextUniqueId++;
        pane.classList.add('md-overlay-pane');
        this._overlayContainer.getContainerElement().appendChild(pane);
        return pane;
    };
    /**
     * Create a DomPortalHost into which the overlay content can be loaded.
     * @param pane The DOM element to turn into a portal host.
     * @returns A portal host for the given DOM element.
     */
    Overlay.prototype._createPortalHost = function (pane) {
        return new DomPortalHost(pane, this._componentFactoryResolver);
    };
    /**
     * Creates an OverlayRef for an overlay in the given DOM element.
     * @param pane DOM element for the overlay
     * @param state
     * @returns {OverlayRef}
     */
    Overlay.prototype._createOverlayRef = function (pane, state) {
        return new OverlayRef(this._createPortalHost(pane), pane, state);
    };
    Overlay = __decorate([
        Injectable(), 
        __metadata('design:paramtypes', [OverlayContainer, ComponentFactoryResolver, OverlayPositionBuilder])
    ], Overlay);
    return Overlay;
}());
/** Providers for Overlay and its related injectables. */
export var OVERLAY_PROVIDERS = [
    ViewportRuler,
    OverlayPositionBuilder,
    Overlay,
    OverlayContainer,
];

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