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refactor(ivy): evaluate prop-based styling bindings with a new algorithm (#30469)

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This is the first refactor PR designed to change how styling bindings
(i.e. `[style]` and `[class]`) behave in Ivy. Instead of having a heavy
element-by-element context be generated for each element, this new
refactor aims to use a single context for each `tNode` element that is
examined and iterated over when styling values are to be applied to the
element.

This patch brings this new functionality to prop-based bindings such as
`[style.prop]` and `[class.name]`.

PR Close #30469
This commit is contained in:
Matias Niemelä
2019-05-08 16:30:28 -07:00
committed by Jason Aden
parent 848e53efd0
commit f03475cac8
24 changed files with 1993 additions and 26 deletions
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6
packages/core/src/render3/interfaces/node.ts
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@ -5,7 +5,7 @@
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {TStylingContext} from '../styling_next/interfaces';
import {CssSelector} from './projection';
import {RNode} from './renderer';
import {StylingContext} from './styling';
@ -438,6 +438,10 @@ export interface TNode {
* with functions each time the creation block is called.
*/
onElementCreationFns: Function[]|null;
// TODO (matsko): rename this to `styles` once the old styling impl is gone
newStyles: TStylingContext|null;
// TODO (matsko): rename this to `classes` once the old styling impl is gone
newClasses: TStylingContext|null;
}
/** Static data for an element */