58 lines
2.3 KiB
TypeScript
58 lines
2.3 KiB
TypeScript
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/**
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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 {assertDataInRange, assertDefined, assertEqual} from '../../util/assert';
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import {TNodeType} from '../interfaces/node';
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import {RText, isProceduralRenderer} from '../interfaces/renderer';
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import {BINDING_INDEX, HEADER_OFFSET, RENDERER, TVIEW} from '../interfaces/view';
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import {appendChild, createTextNode} from '../node_manipulation';
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import {getLView, setIsParent} from '../state';
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import {NO_CHANGE} from '../tokens';
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import {renderStringify} from '../util/misc_utils';
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import {getNativeByIndex} from '../util/view_utils';
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import {createNodeAtIndex} from './shared';
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/**
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* Create static text node
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*
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* @param index Index of the node in the data array
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* @param value Value to write. This value will be stringified.
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*/
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export function text(index: number, value?: any): void {
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const lView = getLView();
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ngDevMode && assertEqual(
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lView[BINDING_INDEX], lView[TVIEW].bindingStartIndex,
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'text nodes should be created before any bindings');
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ngDevMode && ngDevMode.rendererCreateTextNode++;
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const textNative = createTextNode(value, lView[RENDERER]);
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const tNode = createNodeAtIndex(index, TNodeType.Element, textNative, null, null);
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// Text nodes are self closing.
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setIsParent(false);
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appendChild(textNative, tNode, lView);
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}
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/**
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* Create text node with binding
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* Bindings should be handled externally with the proper interpolation(1-8) method
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*
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* @param index Index of the node in the data array.
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* @param value Stringified value to write.
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*/
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export function textBinding<T>(index: number, value: T | NO_CHANGE): void {
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if (value !== NO_CHANGE) {
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const lView = getLView();
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ngDevMode && assertDataInRange(lView, index + HEADER_OFFSET);
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const element = getNativeByIndex(index, lView) as any as RText;
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ngDevMode && assertDefined(element, 'native element should exist');
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ngDevMode && ngDevMode.rendererSetText++;
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const renderer = lView[RENDERER];
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isProceduralRenderer(renderer) ? renderer.setValue(element, renderStringify(value)) :
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element.textContent = renderStringify(value);
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}
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}
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