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fix(ivy): handle elements with local refs in i18n blocks (#33415)

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Prior to this commit, i18n logic which ensures that elements removed in a translation are also removed in DOM, didn't take into account the fact that elements may have local refs. As a result, remove operation failed, since there is no corresponding tNode found. This commit updates the logic to skip all local refs while going though the list of nodes to ensure that DOM matches elements present in translation.

PR Close #33415
This commit is contained in:
Andrew Kushnir
2019-10-25 16:54:27 -07:00
parent da4eb91283
commit bd40c89688
2 changed files with 51 additions and 3 deletions
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17
packages/core/src/render3/i18n.ts
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@ -683,10 +683,21 @@ function i18nEndFirstPass(lView: LView, tView: TView) {
const visitedNodes = readCreateOpCodes(rootIndex, tI18n.create, lView);
// Remove deleted nodes
for (let i = rootIndex + 1; i <= lastCreatedNode.index - HEADER_OFFSET; i++) {
if (visitedNodes.indexOf(i) === -1) {
removeNode(i, lView, /* markAsDetached */ true);
let index = rootIndex + 1;
while (index <= lastCreatedNode.index - HEADER_OFFSET) {
if (visitedNodes.indexOf(index) === -1) {
removeNode(index, lView, /* markAsDetached */ true);
}
// Check if an element has any local refs and skip them
const tNode = getTNode(index, lView);
if (tNode && (tNode.type === TNodeType.Element || tNode.type === TNodeType.ElementContainer) &&
tNode.localNames !== null) {
// Divide by 2 to get the number of local refs,
// since they are stored as an array that also includes directive indexes,
// i.e. ["localRef", directiveIndex, ...]
index += tNode.localNames.length >> 1;
}
index++;
}
}