import{f as n}from"./chunk-AQ27DSQO.js";var r=class{_multiple;_emitChanges;compareWith;_selection=new Set;_deselectedToEmit=[];_selectedToEmit=[];_selected;get selected(){return this._selected||(this._selected=Array.from(this._selection.values())),this._selected}changed=new n;constructor(e=!1,t,i=!0,h){this._multiple=e,this._emitChanges=i,this.compareWith=h,t&&t.length&&(e?t.forEach(s=>this._markSelected(s)):this._markSelected(t[0]),this._selectedToEmit.length=0)}select(...e){this._verifyValueAssignment(e),e.forEach(i=>this._markSelected(i));let t=this._hasQueuedChanges();return this._emitChangeEvent(),t}deselect(...e){this._verifyValueAssignment(e),e.forEach(i=>this._unmarkSelected(i));let t=this._hasQueuedChanges();return this._emitChangeEvent(),t}setSelection(...e){this._verifyValueAssignment(e);let t=this.selected,i=new Set(e.map(s=>this._getConcreteValue(s)));e.forEach(s=>this._markSelected(s)),t.filter(s=>!i.has(this._getConcreteValue(s,i))).forEach(s=>this._unmarkSelected(s));let h=this._hasQueuedChanges();return this._emitChangeEvent(),h}toggle(e){return this.isSelected(e)?this.deselect(e):this.select(e)}clear(e=!0){this._unmarkAll();let t=this._hasQueuedChanges();return e&&this._emitChangeEvent(),t}isSelected(e){return this._selection.has(this._getConcreteValue(e))}isEmpty(){return this._selection.size===0}hasValue(){return!this.isEmpty()}sort(e){this._multiple&&this.selected&&this._selected.sort(e)}isMultipleSelection(){return this._multiple}_emitChangeEvent(){this._selected=null,(this._selectedToEmit.length||this._deselectedToEmit.length)&&(this.changed.next({source:this,added:this._selectedToEmit,removed:this._deselectedToEmit}),this._deselectedToEmit=[],this._selectedToEmit=[])}_markSelected(e){e=this._getConcreteValue(e),this.isSelected(e)||(this._multiple||this._unmarkAll(),this.isSelected(e)||this._selection.add(e),this._emitChanges&&this._selectedToEmit.push(e))}_unmarkSelected(e){e=this._getConcreteValue(e),this.isSelected(e)&&(this._selection.delete(e),this._emitChanges&&this._deselectedToEmit.push(e))}_unmarkAll(){this.isEmpty()||this._selection.forEach(e=>this._unmarkSelected(e))}_verifyValueAssignment(e){e.length>1&&this._multiple}_hasQueuedChanges(){return!!(this._deselectedToEmit.length||this._selectedToEmit.length)}_getConcreteValue(e,t){if(this.compareWith){t=t??this._selection;for(let i of t)if(this.compareWith(e,i))return i;return e}else return e}};export{r as a};