@angular/cdk
Version:
Angular Material Component Development Kit
123 lines • 16 kB
JavaScript
/**
* @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 { Directionality } from '@angular/cdk/bidi';
import { DomPortalOutlet } from '@angular/cdk/portal';
import { DOCUMENT, Location } from '@angular/common';
import { ApplicationRef, ComponentFactoryResolver, Inject, Injectable, Injector, NgZone, } from '@angular/core';
import { OverlayKeyboardDispatcher } from './dispatchers/overlay-keyboard-dispatcher';
import { OverlayOutsideClickDispatcher } from './dispatchers/overlay-outside-click-dispatcher';
import { OverlayConfig } from './overlay-config';
import { OverlayContainer } from './overlay-container';
import { OverlayRef } from './overlay-ref';
import { OverlayPositionBuilder } from './position/overlay-position-builder';
import { ScrollStrategyOptions } from './scroll/index';
/** Next overlay unique ID. */
let nextUniqueId = 0;
// Note that Overlay is *not* scoped to the app root because of the ComponentFactoryResolver
// which needs to be different depending on where OverlayModule is imported.
/**
* Service to create Overlays. Overlays are dynamically added pieces of floating UI, meant to be
* used as a low-level 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 PortalOutlet, so any kind of Portal can be loaded into one.
*/
export class Overlay {
constructor(
/** Scrolling strategies that can be used when creating an overlay. */
scrollStrategies, _overlayContainer, _componentFactoryResolver, _positionBuilder, _keyboardDispatcher, _injector, _ngZone, _document, _directionality,
// @breaking-change 8.0.0 `_location` parameter to be made required.
_location,
// @breaking-change 9.0.0 `_outsideClickDispatcher` parameter to be made required.
_outsideClickDispatcher) {
this.scrollStrategies = scrollStrategies;
this._overlayContainer = _overlayContainer;
this._componentFactoryResolver = _componentFactoryResolver;
this._positionBuilder = _positionBuilder;
this._keyboardDispatcher = _keyboardDispatcher;
this._injector = _injector;
this._ngZone = _ngZone;
this._document = _document;
this._directionality = _directionality;
this._location = _location;
this._outsideClickDispatcher = _outsideClickDispatcher;
}
/**
* Creates an overlay.
* @param config Configuration applied to the overlay.
* @returns Reference to the created overlay.
*/
create(config) {
const host = this._createHostElement();
const pane = this._createPaneElement(host);
const portalOutlet = this._createPortalOutlet(pane);
const overlayConfig = new OverlayConfig(config);
overlayConfig.direction = overlayConfig.direction || this._directionality.value;
return new OverlayRef(portalOutlet, host, pane, overlayConfig, this._ngZone, this._keyboardDispatcher, this._document, this._location, this._outsideClickDispatcher);
}
/**
* Gets a position builder that can be used, via fluent API,
* to construct and configure a position strategy.
* @returns An overlay position builder.
*/
position() {
return this._positionBuilder;
}
/**
* Creates the DOM element for an overlay and appends it to the overlay container.
* @returns Newly-created pane element
*/
_createPaneElement(host) {
const pane = this._document.createElement('div');
pane.id = `cdk-overlay-${nextUniqueId++}`;
pane.classList.add('cdk-overlay-pane');
host.appendChild(pane);
return pane;
}
/**
* Creates the host element that wraps around an overlay
* and can be used for advanced positioning.
* @returns Newly-create host element.
*/
_createHostElement() {
const host = this._document.createElement('div');
this._overlayContainer.getContainerElement().appendChild(host);
return host;
}
/**
* Create a DomPortalOutlet into which the overlay content can be loaded.
* @param pane The DOM element to turn into a portal outlet.
* @returns A portal outlet for the given DOM element.
*/
_createPortalOutlet(pane) {
// We have to resolve the ApplicationRef later in order to allow people
// to use overlay-based providers during app initialization.
if (!this._appRef) {
this._appRef = this._injector.get(ApplicationRef);
}
return new DomPortalOutlet(pane, this._componentFactoryResolver, this._appRef, this._injector, this._document);
}
}
Overlay.decorators = [
{ type: Injectable }
];
Overlay.ctorParameters = () => [
{ type: ScrollStrategyOptions },
{ type: OverlayContainer },
{ type: ComponentFactoryResolver },
{ type: OverlayPositionBuilder },
{ type: OverlayKeyboardDispatcher },
{ type: Injector },
{ type: NgZone },
{ type: undefined, decorators: [{ type: Inject, args: [DOCUMENT,] }] },
{ type: Directionality },
{ type: Location },
{ type: OverlayOutsideClickDispatcher }
];
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Overlays are dynamically added pieces of floating UI, meant to be\n * used as a low-level building block for other components. Dialogs, tooltips, menus,\n * selects, etc. can all be built using overlays. The service should primarily be used by authors\n * of re-usable components rather than developers building end-user applications.\n *\n * An overlay *is* a PortalOutlet, so any kind of Portal can be loaded into one.\n */\n@Injectable()\nexport class Overlay {\n  private _appRef: ApplicationRef;\n\n  constructor(\n              /** Scrolling strategies that can be used when creating an overlay. */\n              public scrollStrategies: ScrollStrategyOptions,\n              private _overlayContainer: OverlayContainer,\n              private _componentFactoryResolver: ComponentFactoryResolver,\n              private _positionBuilder: OverlayPositionBuilder,\n              private _keyboardDispatcher: OverlayKeyboardDispatcher,\n              private _injector: Injector,\n              private _ngZone: NgZone,\n              @Inject(DOCUMENT) private _document: any,\n              private _directionality: Directionality,\n              // @breaking-change 8.0.0 `_location` parameter to be made required.\n              private _location?: Location,\n              // @breaking-change 9.0.0 `_outsideClickDispatcher` parameter to be made required.\n              private _outsideClickDispatcher?: OverlayOutsideClickDispatcher) { }\n\n  /**\n   * Creates an overlay.\n   * @param config Configuration applied to the overlay.\n   * @returns Reference to the created overlay.\n   */\n  create(config?: OverlayConfig): OverlayRef {\n    const host = this._createHostElement();\n    const pane = this._createPaneElement(host);\n    const portalOutlet = this._createPortalOutlet(pane);\n    const overlayConfig = new OverlayConfig(config);\n\n    overlayConfig.direction = overlayConfig.direction || this._directionality.value;\n\n    return new OverlayRef(portalOutlet, host, pane, overlayConfig, this._ngZone,\n      this._keyboardDispatcher, this._document, this._location, this._outsideClickDispatcher);\n  }\n\n  /**\n   * Gets a position builder that can be used, via fluent API,\n   * to construct and configure a position strategy.\n   * @returns An overlay position builder.\n   */\n  position(): OverlayPositionBuilder {\n    return this._positionBuilder;\n  }\n\n  /**\n   * Creates the DOM element for an overlay and appends it to the overlay container.\n   * @returns Newly-created pane element\n   */\n  private _createPaneElement(host: HTMLElement): HTMLElement {\n    const pane = this._document.createElement('div');\n\n    pane.id = `cdk-overlay-${nextUniqueId++}`;\n    pane.classList.add('cdk-overlay-pane');\n    host.appendChild(pane);\n\n    return pane;\n  }\n\n  /**\n   * Creates the host element that wraps around an overlay\n   * and can be used for advanced positioning.\n   * @returns Newly-create host element.\n   */\n  private _createHostElement(): HTMLElement {\n    const host = this._document.createElement('div');\n    this._overlayContainer.getContainerElement().appendChild(host);\n    return host;\n  }\n\n  /**\n   * Create a DomPortalOutlet into which the overlay content can be loaded.\n   * @param pane The DOM element to turn into a portal outlet.\n   * @returns A portal outlet for the given DOM element.\n   */\n  private _createPortalOutlet(pane: HTMLElement): DomPortalOutlet {\n    // We have to resolve the ApplicationRef later in order to allow people\n    // to use overlay-based providers during app initialization.\n    if (!this._appRef) {\n      this._appRef = this._injector.get<ApplicationRef>(ApplicationRef);\n    }\n\n    return new DomPortalOutlet(pane, this._componentFactoryResolver, this._appRef, this._injector,\n                               this._document);\n  }\n}\n"]}