Returns the state of the igxFocus.

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
let isFocusOn = this.igxFocus.focused;
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Sets the state of the igxFocus.

<igx-input-group >
 <input #focusContainer igxInput [igxFocus]="true"/>
</igx-input-group>
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Gets the native element of the igxFocus.

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
let igxFocusNativeElement = this.igxFocus.nativeElement;
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Triggers the igxFocus state.

@ViewChild('focusContainer', {read: IgxFocusDirective})
public igxFocus: IgxFocusDirective;
this.igxFocus.trigger();
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