816ec0b1c3
- rename `LViewData` to `LView` (to be consistent with `TView`) - Remove `getRenderer`, `getRendererFactory`, `getTview`, `getCurrentQueries`, PR Close #27282
76 lines
2.9 KiB
TypeScript
76 lines
2.9 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {devModeEqual} from '../change_detection/change_detection_util';
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import {assertDataInRange, assertLessThan, assertNotEqual} from './assert';
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import {throwErrorIfNoChangesMode} from './errors';
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import {BINDING_INDEX, LView} from './interfaces/view';
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import {getCheckNoChangesMode, getCreationMode} from './state';
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import {NO_CHANGE} from './tokens';
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import {isDifferent} from './util';
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// TODO(misko): consider inlining
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/** Updates binding and returns the value. */
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export function updateBinding(lView: LView, bindingIndex: number, value: any): any {
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return lView[bindingIndex] = value;
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}
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/** Gets the current binding value. */
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export function getBinding(lView: LView, bindingIndex: number): any {
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ngDevMode && assertDataInRange(lView, lView[bindingIndex]);
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ngDevMode &&
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assertNotEqual(lView[bindingIndex], NO_CHANGE, 'Stored value should never be NO_CHANGE.');
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return lView[bindingIndex];
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}
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/** Updates binding if changed, then returns whether it was updated. */
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export function bindingUpdated(lView: LView, bindingIndex: number, value: any): boolean {
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ngDevMode && assertNotEqual(value, NO_CHANGE, 'Incoming value should never be NO_CHANGE.');
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ngDevMode &&
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assertLessThan(bindingIndex, lView.length, `Slot should have been initialized to NO_CHANGE`);
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if (lView[bindingIndex] === NO_CHANGE) {
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// initial pass
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lView[bindingIndex] = value;
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} else if (isDifferent(lView[bindingIndex], value)) {
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if (ngDevMode && getCheckNoChangesMode()) {
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if (!devModeEqual(lView[bindingIndex], value)) {
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throwErrorIfNoChangesMode(getCreationMode(), lView[bindingIndex], value);
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}
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}
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lView[bindingIndex] = value;
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} else {
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return false;
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}
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return true;
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}
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/** Updates 2 bindings if changed, then returns whether either was updated. */
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export function bindingUpdated2(lView: LView, bindingIndex: number, exp1: any, exp2: any): boolean {
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const different = bindingUpdated(lView, bindingIndex, exp1);
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return bindingUpdated(lView, bindingIndex + 1, exp2) || different;
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}
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/** Updates 3 bindings if changed, then returns whether any was updated. */
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export function bindingUpdated3(
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lView: LView, bindingIndex: number, exp1: any, exp2: any, exp3: any): boolean {
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const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);
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return bindingUpdated(lView, bindingIndex + 2, exp3) || different;
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}
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/** Updates 4 bindings if changed, then returns whether any was updated. */
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export function bindingUpdated4(
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lView: LView, bindingIndex: number, exp1: any, exp2: any, exp3: any, exp4: any): boolean {
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const different = bindingUpdated2(lView, bindingIndex, exp1, exp2);
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return bindingUpdated2(lView, bindingIndex + 2, exp3, exp4) || different;
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}
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