@nebular/theme
Version:
@nebular/theme
70 lines • 2.03 kB
JavaScript
import { InjectionToken, Optional, Inject, Injectable } from '@angular/core';
import { ReplaySubject } from 'rxjs';
import { share } from 'rxjs/operators';
/**
* Layout direction.
* */
export var NbLayoutDirection;
(function (NbLayoutDirection) {
NbLayoutDirection["LTR"] = "ltr";
NbLayoutDirection["RTL"] = "rtl";
})(NbLayoutDirection || (NbLayoutDirection = {}));
;
/**
* Layout direction setting injection token.
* */
export const NB_LAYOUT_DIRECTION = new InjectionToken('Layout direction');
/**
* Layout Direction Service.
* Allows to set or get layout direction and listen to its changes
*/
export class NbLayoutDirectionService {
constructor(direction = NbLayoutDirection.LTR) {
this.direction = direction;
this.$directionChange = new ReplaySubject(1);
this.setDirection(direction);
}
/**
* Returns true if layout direction set to left to right.
* @returns boolean.
* */
isLtr() {
return this.direction === NbLayoutDirection.LTR;
}
/**
* Returns true if layout direction set to right to left.
* @returns boolean.
* */
isRtl() {
return this.direction === NbLayoutDirection.RTL;
}
/**
* Returns current layout direction.
* @returns NbLayoutDirection.
* */
getDirection() {
return this.direction;
}
/**
* Sets layout direction
* @param {NbLayoutDirection} direction
*/
setDirection(direction) {
this.direction = direction;
this.$directionChange.next(direction);
}
/**
* Triggered when direction was changed.
* @returns Observable<NbLayoutDirection>.
*/
onDirectionChange() {
return this.$directionChange.pipe(share());
}
}
NbLayoutDirectionService.decorators = [
{ type: Injectable }
];
NbLayoutDirectionService.ctorParameters = () => [
{ type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [NB_LAYOUT_DIRECTION,] }] }
];
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