fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies #228

ThomasBurleson · 2017-03-19T15:24:26Z

fix(ngClass): properly differentiate between ngClass and class api usages
- class.<xxx> are destructive overrides (as seen in NgClass::klass)
- ngClass.<xxx> use iterables to merge/enable/disable 0...n classes
fix(ngClass,ngStyle): support ChangeDetectionStrategy.OnPush
- Add support for both OnPush change detection strategies and for @input changes.

@see https://plnkr.co/edit/jCICQ1GXFnzFqFTFlXwh?p=preview

fixes #206, fixes #215.

jelbourn · 2017-03-20T17:20:16Z

src/lib/flexbox/api/base-adapter.ts


 /**
 * Adapter to the BaseFxDirective abstract class so it can be used via composition.
 * @see BaseFxDirective
 */
 export class BaseFxDirectiveAdapter extends BaseFxDirective {
+
+  get activeKey() {


This needs a description comment

jelbourn · 2017-03-20T17:20:53Z

src/lib/flexbox/api/base-adapter.ts

@@ -19,10 +38,21 @@ export class BaseFxDirectiveAdapter extends BaseFxDirective {
  }

  /**
+     *
+     */


Empty comment block?

jelbourn · 2017-03-20T17:22:03Z

src/lib/flexbox/api/base-adapter.ts

@@ -19,10 +38,21 @@ export class BaseFxDirectiveAdapter extends BaseFxDirective {
  }

  /**
+     *
+     */
+  constructor(protected _baseKey: string,


baseKey needs a description comment (as a class member) since it's non-obvious

jelbourn · 2017-03-20T17:23:32Z

src/lib/flexbox/api/base.ts

-   *  Dictionary of input keys with associated values
-   */
-  protected _inputMap = {};
+  get hasMQListener() {


hasMediaQueryListener?

jelbourn · 2017-03-20T17:24:29Z

src/lib/flexbox/api/base.ts

+      this._mqActivation = new ResponsiveActivation(
+          keyOptions,
+          this._mediaMonitor,
+          (change) => onMediaQueryChange.call(this, change)


(change) => this.onMediaQueryChange(change)

(there's no need for .call here)

jelbourn · 2017-03-20T17:25:16Z

src/lib/flexbox/api/base.ts

@@ -201,4 +195,18 @@ export abstract class BaseFxDirective implements OnDestroy {
    return this._mqActivation.hasKeyValue(key);
  }

+  /**
+   * Original dom Elements CSS display style
+   */


You can collapse short description blocks into a single line:

/** The element's original CSS `display` property value. */

jelbourn · 2017-03-20T17:27:14Z

src/lib/flexbox/api/class.ts

              _iterableDiffers: IterableDiffers, _keyValueDiffers: KeyValueDiffers,
              _ngEl: ElementRef, _renderer: Renderer) {
    super(_iterableDiffers, _keyValueDiffers, _ngEl, _renderer);
-    this._base = new BaseFxDirectiveAdapter(monitor, _ngEl, _renderer);
+    this._base = new BaseFxDirectiveAdapter("class", monitor, _ngEl, _renderer);


Single quotes (there should be a lint check for this)

jelbourn · 2017-03-20T17:27:51Z

src/lib/flexbox/api/class.ts

@@ -72,7 +69,7 @@ export class ClassDirective extends NgClass implements OnInit, OnChanges, OnDest
  @Input('ngClass.gt-lg') set ngClassGtLg(val: NgClassType) { this._base.cacheInput('classGtLg', val, true); };

  /** Deprecated selectors */
-  @Input('class')         set classBase(val: NgClassType) { this._base.cacheInput('class', val, true); }
+  @Input('class')         set klazz(val: NgClassType) { this._base.cacheInput('class', val, true); }


cssClass would be a lot more descriptive than klazz

This is a similar convention used by NgClass:

@Input('class') set klass(v: string) { ... }

jelbourn · 2017-03-20T17:29:43Z

src/lib/flexbox/api/class.ts

-    if (changed || this._base.mqActivation) {
-      this._updateClass();
+    const changed = (this._base.activeKey in changes);
+    return changed && this._updateClass();


Angular does not do anything with the return value of lifecycle events

ThomasBurleson · 2017-03-20T20:52:45Z

@jelbourn - comments addressed. Ready for presubmit.

ThomasBurleson · 2017-03-22T11:08:17Z

@jelbourn - I will remove support for class.<xxx> and style.<xxx> responsive APIs and require developers to use ngClass.<xxx> and ngStyle.<xxx> APIs.

ThomasBurleson · 2017-03-27T21:14:27Z

@jelbourn - ready for review and presubmit. All tests pass.

Current tests include cloned copies of those from the Angular core ng-class-spec.ts tests.

ThomasBurleson · 2017-03-27T21:25:14Z

@mmalerba - can you review these fixes ? Thanks.

mmalerba · 2017-03-28T16:40:22Z

src/lib/flexbox/api/class.ts

+  @Input('ngClass.lg')    set ngClassLg(val: NgClassType) { this._ngClassAdapter.cacheInput('ngClassLg', val, true);};
+  @Input('ngClass.xl')    set ngClassXl(val: NgClassType) { this._ngClassAdapter.cacheInput('ngClassXl', val, true); };
+
+  @Input('ngClass.lt-xs') set ngClassLtXs(val: NgClassType) { this._ngClassAdapter.cacheInput('ngClassLtXs', val, true); };


Is lt-xs a real thing? I think this should be lt-xl

mmalerba · 2017-03-28T16:47:09Z

src/lib/flexbox/api/base-adapter.ts

+   * e.g. which property value will be used.
+   */
+  get activeKey() {
+    let mqa = this._mqActivation;


this seems pointless? just use _mqActivation below

this is a short-cut reference to keep the code clean.

mmalerba · 2017-03-28T16:47:14Z

src/lib/flexbox/api/base-adapter.ts

+    let key = mqa ? mqa.activatedInputKey : this._baseKey;
+    // ClassDirective::SimpleChanges uses 'klazz'
+    // instead of 'class' as a key
+    return (key === 'class') ? 'klazz' : key;


Just want to double check, this is really what you want right? I see klazz, clazz and klass at various points in the code. Also future work: we should make this consistent everywhere, I vote for cssClass

angular ng-class.ts uses klass. Since they already set a precedent, why not be consistent?

Ok but is this the correct one? because I do see all three of these in the code. More important than what we decide to call it is that it be consistent within our code instead of having 3 different variants. But I don't think we necessarily have to follow the same naming conventions for internal variables as them, this is a totally separate repo.

Oh ok I see this is referencing the one from angular core, no issue for this PR then, just the naming thing to consider in the future

mmalerba · 2017-03-28T16:49:36Z

src/lib/flexbox/api/class.ts

+  @Input('class.lg')      set classLg(val: NgClassType) { this._classAdapter.cacheInput('classLg', val, true); };
+  @Input('class.xl')      set classXl(val: NgClassType) { this._classAdapter.cacheInput('classXl', val, true); };
+
+  @Input('class.lt-xs')   set classLtXs(val: NgClassType) { this._classAdapter.cacheInput('classLtXs', val, true); };


should this be lt-xl?

lt-xl, lt-lg, lt-md,lt-sm are all valid responsive aliases.

I see... the Inputs are not entirely correct. I will fix.

@input

…rategy.OnPush strategies * fix(ngClass): properly differentiate between `ngClass` and `class` api usages * `class.<xxx>` are destructive overrides (as seen in `NgClass::klass`) * `ngClass.<xxx>` use iterables to merge/enable/disable 0...n classes * fix(ngClass,ngStyle): support ChangeDetectionStrategy.OnPush * Add support for both **OnPush** change detection strategies and for @input changes. * fix class lt-<xx> selectors > @see https://plnkr.co/edit/jCICQ1GXFnzFqFTFlXwh?p=preview fixes #206, fixes #215.

ThomasBurleson · 2017-03-28T20:51:16Z

FYI - A design doc is being prepared to discuss the Responsive API for ngClass, class, ngStyle, and style. Future changes - based on the document - may be presented via 1 or more additional PRs.

See more details here: angular/flex-layout#228

@input

…rategy.OnPush strategies (angular#228) * fix(ngClass): properly differentiate between `ngClass` and `class` api usages * `class.<xxx>` are destructive overrides (as seen in `NgClass::klass`) * `ngClass.<xxx>` use iterables to merge/enable/disable 0...n classes * fix(ngClass,ngStyle): support ChangeDetectionStrategy.OnPush * Add support for both **OnPush** change detection strategies and for @input changes. * fix class lt-<xx> selectors > @see https://plnkr.co/edit/jCICQ1GXFnzFqFTFlXwh?p=preview fixes angular#206, fixes angular#215.

angular-automatic-lock-bot · 2019-09-05T22:03:21Z

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googlebot added the cla: yes label Mar 19, 2017

ThomasBurleson force-pushed the thomas/fix-class-onPush branch 5 times, most recently from c0cb733 to cf60c0a Compare March 19, 2017 20:28

jelbourn reviewed Mar 20, 2017

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ThomasBurleson force-pushed the thomas/fix-class-onPush branch 2 times, most recently from 2c67ed4 to 40a33b1 Compare March 20, 2017 20:52

ThomasBurleson added the pr: needs presubmit label Mar 20, 2017

ThomasBurleson added this to the v2.0.0-beta.7 milestone Mar 20, 2017

ThomasBurleson force-pushed the thomas/fix-class-onPush branch 2 times, most recently from 95bb161 to d2517b8 Compare March 22, 2017 01:52

ThomasBurleson force-pushed the thomas/fix-class-onPush branch from d2517b8 to 72afd0c Compare March 27, 2017 16:16

ThomasBurleson changed the title ~~fix(ngClass,ngStyle): support ChangeDetectionStrategy.OnPush~~ fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies Mar 27, 2017

ThomasBurleson force-pushed the thomas/fix-class-onPush branch 2 times, most recently from 167cb8c to 9c425aa Compare March 27, 2017 20:53

ThomasBurleson mentioned this pull request Mar 27, 2017

API Documentation for ngStyle and ngClass uses different syntax #215

Closed

ThomasBurleson force-pushed the thomas/fix-class-onPush branch from 9c425aa to 7bb2d96 Compare March 27, 2017 21:17

mmalerba self-requested a review March 27, 2017 22:37

mmalerba self-assigned this Mar 27, 2017

ThomasBurleson force-pushed the thomas/fix-class-onPush branch from 7bb2d96 to 1bf533b Compare March 28, 2017 03:28

mmalerba suggested changes Mar 28, 2017

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mmalerba removed the pr: needs presubmit label Mar 28, 2017

ThomasBurleson force-pushed the thomas/fix-class-onPush branch from 1bf533b to 446fc8b Compare March 28, 2017 17:38

ThomasBurleson force-pushed the thomas/fix-class-onPush branch from 446fc8b to 5c098d6 Compare March 28, 2017 17:59

mmalerba approved these changes Mar 28, 2017

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mmalerba added the pr: lgtm This PR has been approved by the reviewer label Mar 28, 2017

ThomasBurleson added the pr: needs presubmit label Mar 28, 2017

tinayuangao merged commit 5db01e7 into master Mar 29, 2017

ThomasBurleson deleted the thomas/fix-class-onPush branch March 30, 2017 23:28

felixjung pushed a commit to felixjung/tinydraft that referenced this pull request Apr 30, 2017

Workaround for a bug in flexLayout until fix hits npm

228a715

See more details here: angular/flex-layout#228

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fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies #228

fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies #228

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                 }
                 /**
+                   *
+                   */

fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies #228

fix(ngClass,ngStyle): support proper API usages and ChangeDetectionStrategy.OnPush strategies #228

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