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refactor(directives): minor cleanup & refactoring

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Closes #3629
This commit is contained in:
Victor Berchet
2015-08-13 13:18:41 -07:00
parent 89a0f2457d
commit ee5df00146
2 changed files with 28 additions and 53 deletions
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22
modules/angular2/src/directives/ng_if.ts
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@ -26,23 +26,17 @@ import {isBlank} from 'angular2/src/facade/lang';
*/
@Directive({selector: '[ng-if]', properties: ['ngIf']})
export class NgIf {
viewContainer: ViewContainerRef;
templateRef: TemplateRef;
prevCondition: boolean;
private _prevCondition: boolean = null;
constructor(viewContainer: ViewContainerRef, templateRef: TemplateRef) {
this.viewContainer = viewContainer;
this.prevCondition = null;
this.templateRef = templateRef;
}
constructor(private _viewContainer: ViewContainerRef, private _templateRef: TemplateRef) {}
set ngIf(newCondition /* boolean */) {
if (newCondition && (isBlank(this.prevCondition) || !this.prevCondition)) {
this.prevCondition = true;
this.viewContainer.createEmbeddedView(this.templateRef);
} else if (!newCondition && (isBlank(this.prevCondition) || this.prevCondition)) {
this.prevCondition = false;
this.viewContainer.clear();
if (newCondition && (isBlank(this._prevCondition) || !this._prevCondition)) {
this._prevCondition = true;
this._viewContainer.createEmbeddedView(this._templateRef);
} else if (!newCondition && (isBlank(this._prevCondition) || this._prevCondition)) {
this._prevCondition = false;
this._viewContainer.clear();
}
}
}