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attribute.ts
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attribute.ts
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/**
* @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 {bindingUpdated} from '../bindings';
import {SanitizerFn} from '../interfaces/sanitization';
import {getLView, getSelectedTNode, getTView, nextBindingIndex} from '../state';
import {elementAttributeInternal, storePropertyBindingMetadata} from './shared';
/**
* Updates the value of or removes a bound attribute on an Element.
*
* Used in the case of `[attr.title]="value"`
*
* @param name name The name of the attribute.
* @param value value The attribute is removed when value is `null` or `undefined`.
* Otherwise the attribute value is set to the stringified value.
* @param sanitizer An optional function used to sanitize the value.
* @param namespace Optional namespace to use when setting the attribute.
*
* @codeGenApi
*/
export function ɵɵattribute(
name: string, value: any, sanitizer?: SanitizerFn|null,
namespace?: string): typeof ɵɵattribute {
const lView = getLView();
const bindingIndex = nextBindingIndex();
if (bindingUpdated(lView, bindingIndex, value)) {
const tView = getTView();
const tNode = getSelectedTNode();
elementAttributeInternal(tNode, lView, name, value, sanitizer, namespace);
ngDevMode && storePropertyBindingMetadata(tView.data, tNode, 'attr.' + name, bindingIndex);
}
return ɵɵattribute;
}