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feat(ivy): add ability to inspect local refs through context discovery (#26117)

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PR Close #26117
This commit is contained in:
Pawel Kozlowski
2018-09-26 15:21:58 +02:00
committed by Alex Rickabaugh
parent 325e8010e9
commit 5f6900ecc0
3 changed files with 136 additions and 10 deletions
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15
packages/core/src/render3/discovery_utils.ts
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@ -8,7 +8,7 @@
import {Injector} from '../di/injector';
import {assertDefined} from './assert';
import {LContext, discoverDirectiveIndices, discoverDirectives, getContext, isComponentInstance, readPatchedLViewData} from './context_discovery';
import {LContext, discoverDirectiveIndices, discoverDirectives, discoverLocalRefs, getContext, isComponentInstance, readPatchedLViewData} from './context_discovery';
import {LElementNode, TNode, TNodeFlags} from './interfaces/node';
import {CONTEXT, FLAGS, INJECTOR, LViewData, LViewFlags, PARENT, RootContext, TVIEW} from './interfaces/view';
@ -141,3 +141,16 @@ export function getRootView(componentOrView: LViewData | {}): LViewData {
}
return lViewData;
}
/**
* Retrieve map of local references (local reference name => element or directive instance).
*/
export function getLocalRefs(target: {}): {[key: string]: any} {
const context = loadContext(target) !;
if (context.localRefs === undefined) {
context.localRefs = discoverLocalRefs(context.lViewData, context.lNodeIndex);
}
return context.localRefs || {};
}