cargdev/angular
1
0
Fork 0
Code Issues 11 Pull Requests Actions Packages Projects Releases Wiki Activity

fix(ivy): @Host should behave as in View Engine (#27646)

Browse Source 
PR Close #27646
This commit is contained in:
Marc Laval
2018-12-13 11:14:33 +01:00
committed by Matias Niemelä
parent e8f7241366
commit 8f8572fd3e
12 changed files with 337 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

32
packages/core/src/render3/util.ts
View File

@ -13,7 +13,7 @@ import {ACTIVE_INDEX, LContainer} from './interfaces/container';
import {LContext, MONKEY_PATCH_KEY_NAME} from './interfaces/context';
import {ComponentDef, DirectiveDef} from './interfaces/definition';
import {NO_PARENT_INJECTOR, RelativeInjectorLocation, RelativeInjectorLocationFlags} from './interfaces/injector';
import {TContainerNode, TElementNode, TNode, TNodeFlags} from './interfaces/node';
import {TContainerNode, TElementNode, TNode, TNodeFlags, TNodeType} from './interfaces/node';
import {RComment, RElement, RText} from './interfaces/renderer';
import {StylingContext} from './interfaces/styling';
import {CONTEXT, DECLARATION_VIEW, FLAGS, HEADER_OFFSET, HOST, HOST_NODE, LView, LViewFlags, PARENT, RootContext, TData, TVIEW, TView} from './interfaces/view';
@ -260,3 +260,33 @@ export function addAllToArray(items: any[], arr: any[]) {
arr.push(items[i]);
}
}
/**
* Given a current view, finds the nearest component's host (LElement).
*
* @param lView LView for which we want a host element node
* @param declarationMode indicates whether DECLARATION_VIEW or PARENT should be used to climb the
* tree.
* @returns The host node
*/
export function findComponentView(lView: LView, declarationMode?: boolean): LView {
let rootTNode = lView[HOST_NODE];
while (rootTNode && rootTNode.type === TNodeType.View) {
ngDevMode && assertDefined(
lView[declarationMode ? DECLARATION_VIEW : PARENT],
declarationMode ? 'lView.declarationView' : 'lView.parent');
lView = lView[declarationMode ? DECLARATION_VIEW : PARENT] !;
rootTNode = lView[HOST_NODE];
}
return lView;
}
/**
* Return the host TElementNode of the starting LView
* @param lView the starting LView.
*/
export function getHostTElementNode(lView: LView): TElementNode|null {
return findComponentView(lView, true)[HOST_NODE] as TElementNode;
}