| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import { assertDomNode, assertIndexInRange } from '../util/assert';
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| 9 | import { getInsertInFrontOfRNodeWithNoI18n, nativeInsertBefore } from './node_manipulation';
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| 10 | import { unwrapRNode } from './util/view_utils';
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| 11 | /**
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| 12 | * Find a node in front of which `currentTNode` should be inserted (takes i18n into account).
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| 13 | *
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| 14 | * This method determines the `RNode` in front of which we should insert the `currentRNode`. This
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| 15 | * takes `TNode.insertBeforeIndex` into account.
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| 16 | *
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| 17 | * @param parentTNode parent `TNode`
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| 18 | * @param currentTNode current `TNode` (The node which we would like to insert into the DOM)
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| 19 | * @param lView current `LView`
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| 20 | */
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| 21 | export function getInsertInFrontOfRNodeWithI18n(parentTNode, currentTNode, lView) {
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| 22 | const tNodeInsertBeforeIndex = currentTNode.insertBeforeIndex;
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| 23 | const insertBeforeIndex = Array.isArray(tNodeInsertBeforeIndex) ? tNodeInsertBeforeIndex[0] : tNodeInsertBeforeIndex;
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| 24 | if (insertBeforeIndex === null) {
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| 25 | return getInsertInFrontOfRNodeWithNoI18n(parentTNode, currentTNode, lView);
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| 26 | }
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| 27 | else {
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| 28 | ngDevMode && assertIndexInRange(lView, insertBeforeIndex);
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| 29 | return unwrapRNode(lView[insertBeforeIndex]);
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| 30 | }
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| 31 | }
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| 32 | /**
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| 33 | * Process `TNode.insertBeforeIndex` by adding i18n text nodes.
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| 34 | *
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| 35 | * See `TNode.insertBeforeIndex`
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| 36 | */
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| 37 | export function processI18nInsertBefore(renderer, childTNode, lView, childRNode, parentRElement) {
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| 38 | const tNodeInsertBeforeIndex = childTNode.insertBeforeIndex;
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| 39 | if (Array.isArray(tNodeInsertBeforeIndex)) {
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| 40 | // An array indicates that there are i18n nodes that need to be added as children of this
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| 41 | // `childRNode`. These i18n nodes were created before this `childRNode` was available and so
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| 42 | // only now can be added. The first element of the array is the normal index where we should
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| 43 | // insert the `childRNode`. Additional elements are the extra nodes to be added as children of
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| 44 | // `childRNode`.
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| 45 | ngDevMode && assertDomNode(childRNode);
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| 46 | let i18nParent = childRNode;
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| 47 | let anchorRNode = null;
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| 48 | if (!(childTNode.type & 3 /* AnyRNode */)) {
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| 49 | anchorRNode = i18nParent;
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| 50 | i18nParent = parentRElement;
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| 51 | }
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| 52 | if (i18nParent !== null && (childTNode.flags & 2 /* isComponentHost */) === 0) {
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| 53 | for (let i = 1; i < tNodeInsertBeforeIndex.length; i++) {
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| 54 | // No need to `unwrapRNode` because all of the indexes point to i18n text nodes.
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| 55 | // see `assertDomNode` below.
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| 56 | const i18nChild = lView[tNodeInsertBeforeIndex[i]];
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| 57 | nativeInsertBefore(renderer, i18nParent, i18nChild, anchorRNode, false);
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| 58 | }
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| 59 | }
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| 60 | }
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| 61 | }
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| 62 | //# 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