/**
* @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 { assertGreaterThan } from '../../util/assert';
import { assertIndexInDeclRange } from '../assert';
import { executeCheckHooks, executeInitAndCheckHooks } from '../hooks';
import { FLAGS } from '../interfaces/view';
import { getLView, getSelectedIndex, getTView, isInCheckNoChangesMode, setSelectedIndex } from '../state';
/**
* Advances to an element for later binding instructions.
*
* Used in conjunction with instructions like {@link property} to act on elements with specified
* indices, for example those created with {@link element} or {@link elementStart}.
*
* ```ts
* (rf: RenderFlags, ctx: any) => {
* if (rf & 1) {
* text(0, 'Hello');
* text(1, 'Goodbye')
* element(2, 'div');
* }
* if (rf & 2) {
* advance(2); // Advance twice to the
.
* property('title', 'test');
* }
* }
* ```
* @param delta Number of elements to advance forwards by.
*
* @codeGenApi
*/
export function ɵɵadvance(delta) {
ngDevMode && assertGreaterThan(delta, 0, 'Can only advance forward');
selectIndexInternal(getTView(), getLView(), getSelectedIndex() + delta, isInCheckNoChangesMode());
}
export function selectIndexInternal(tView, lView, index, checkNoChangesMode) {
ngDevMode && assertIndexInDeclRange(lView, index);
// Flush the initial hooks for elements in the view that have been added up to this point.
// PERF WARNING: do NOT extract this to a separate function without running benchmarks
if (!checkNoChangesMode) {
const hooksInitPhaseCompleted = (lView[FLAGS] & 3 /* InitPhaseStateMask */) === 3 /* InitPhaseCompleted */;
if (hooksInitPhaseCompleted) {
const preOrderCheckHooks = tView.preOrderCheckHooks;
if (preOrderCheckHooks !== null) {
executeCheckHooks(lView, preOrderCheckHooks, index);
}
}
else {
const preOrderHooks = tView.preOrderHooks;
if (preOrderHooks !== null) {
executeInitAndCheckHooks(lView, preOrderHooks, 0 /* OnInitHooksToBeRun */, index);
}
}
}
// We must set the selected index *after* running the hooks, because hooks may have side-effects
// that cause other template functions to run, thus updating the selected index, which is global
// state. If we run `setSelectedIndex` *before* we run the hooks, in some cases the selected index
// will be altered by the time we leave the `ɵɵadvance` instruction.
setSelectedIndex(index);
}
//# sourceMappingURL=data:application/json;base64,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