cargdev/angular
1
0
Fork 0
Code Issues 12 Pull Requests Actions Packages Projects Releases Wiki Activity

feat(ivy): provide groundwork for animations in core (#25234)

Browse Source 
PR Close #25234
This commit is contained in:
Matias Niemelä
2018-08-28 16:49:52 -07:00
committed by Kara Erickson
parent a880686081
commit 82a14dc107
24 changed files with 2379 additions and 267 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
packages/core/src/render3/util.ts
View File

@ -7,9 +7,13 @@
*/
import {devModeEqual} from '../change_detection/change_detection_util';
import {assertLessThan} from './assert';
import {assertDefined, assertLessThan} from './assert';
import {readElementValue, readPatchedLViewData} from './context_discovery';
import {LContainerNode, LElementContainerNode, LElementNode, TNode, TNodeFlags} from './interfaces/node';
import {HEADER_OFFSET, LViewData, TData} from './interfaces/view';
import {CONTEXT, FLAGS, HEADER_OFFSET, LViewData, LViewFlags, PARENT, RootContext, TData} from './interfaces/view';
/**
* Returns whether the values are different from a change detection stand point.
@ -87,10 +91,6 @@ export function loadElementInternal(index: number, arr: LViewData): LElementNode
return readElementValue(value);
}
export function readElementValue(value: LElementNode | any[]): LElementNode {
return (Array.isArray(value) ? (value as any as any[])[0] : value) as LElementNode;
}
export function getLNode(tNode: TNode, hostView: LViewData): LElementNode|LContainerNode|
LElementContainerNode {
return readElementValue(hostView[tNode.index]);
@ -103,3 +103,21 @@ export function isContentQueryHost(tNode: TNode): boolean {
export function isComponent(tNode: TNode): boolean {
return (tNode.flags & TNodeFlags.isComponent) === TNodeFlags.isComponent;
}
/**
* Retrieve the root view from any component by walking the parent `LViewData` until
* reaching the root `LViewData`.
*
* @param component any component
*/
export function getRootView(target: LViewData | {}): LViewData {
ngDevMode && assertDefined(target, 'component');
let lViewData = Array.isArray(target) ? (target as LViewData) : readPatchedLViewData(target) !;
while (lViewData && !(lViewData[FLAGS] & LViewFlags.IsRoot)) {
lViewData = lViewData[PARENT] !;
}
return lViewData;
}
export function getRootContext(viewOrComponent: LViewData | {}): RootContext {
return getRootView(viewOrComponent)[CONTEXT] as RootContext;
}