@angular/core
Version:
Angular - the core framework
88 lines • 9.15 kB
JavaScript
/**
* @fileoverview added by tsickle
* Generated from: packages/core/src/render3/util/view_traversal_utils.ts
* @suppress {checkTypes,constantProperty,extraRequire,missingOverride,missingReturn,unusedPrivateMembers,uselessCode} checked by tsc
*/
/**
* @license
* Copyright Google Inc. 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 { assertDefined } from '../../util/assert';
import { assertLView } from '../assert';
import { isLContainer, isLView } from '../interfaces/type_checks';
import { CHILD_HEAD, CONTEXT, FLAGS, NEXT, PARENT } from '../interfaces/view';
import { readPatchedLView } from './view_utils';
/**
* Gets the parent LView of the passed LView, if the PARENT is an LContainer, will get the parent of
* that LContainer, which is an LView
* @param {?} lView the lView whose parent to get
* @return {?}
*/
export function getLViewParent(lView) {
ngDevMode && assertLView(lView);
/** @type {?} */
const parent = lView[PARENT];
return isLContainer(parent) ? (/** @type {?} */ (parent[PARENT])) : parent;
}
/**
* Retrieve the root view from any component or `LView` by walking the parent `LView` until
* reaching the root `LView`.
*
* @param {?} componentOrLView any component or `LView`
* @return {?}
*/
export function getRootView(componentOrLView) {
ngDevMode && assertDefined(componentOrLView, 'component');
/** @type {?} */
let lView = isLView(componentOrLView) ? componentOrLView : (/** @type {?} */ (readPatchedLView(componentOrLView)));
while (lView && !(lView[FLAGS] & 512 /* IsRoot */)) {
lView = (/** @type {?} */ (getLViewParent(lView)));
}
ngDevMode && assertLView(lView);
return lView;
}
/**
* Returns the `RootContext` instance that is associated with
* the application where the target is situated. It does this by walking the parent views until it
* gets to the root view, then getting the context off of that.
*
* @param {?} viewOrComponent the `LView` or component to get the root context for.
* @return {?}
*/
export function getRootContext(viewOrComponent) {
/** @type {?} */
const rootView = getRootView(viewOrComponent);
ngDevMode &&
assertDefined(rootView[CONTEXT], 'RootView has no context. Perhaps it is disconnected?');
return (/** @type {?} */ (rootView[CONTEXT]));
}
/**
* Gets the first `LContainer` in the LView or `null` if none exists.
* @param {?} lView
* @return {?}
*/
export function getFirstLContainer(lView) {
return getNearestLContainer(lView[CHILD_HEAD]);
}
/**
* Gets the next `LContainer` that is a sibling of the given container.
* @param {?} container
* @return {?}
*/
export function getNextLContainer(container) {
return getNearestLContainer(container[NEXT]);
}
/**
* @param {?} viewOrContainer
* @return {?}
*/
function getNearestLContainer(viewOrContainer) {
while (viewOrContainer !== null && !isLContainer(viewOrContainer)) {
viewOrContainer = viewOrContainer[NEXT];
}
return viewOrContainer;
}
//# sourceMappingURL=data:application/json;base64,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