@catull/igniteui-angular
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Ignite UI for Angular is a dependency-free Angular toolkit for building modern web apps
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JavaScript
import { __decorate, __extends, __metadata, __param, __read, __spread } from "tslib";
import { CommonModule } from '@angular/common';
import { AfterContentInit, AfterViewInit, Component, ContentChildren, ChangeDetectorRef, EventEmitter, HostBinding, Inject, Input, NgModule, Output, Optional, QueryList, Renderer2, ViewChildren, OnDestroy } from '@angular/core';
import { Subject } from 'rxjs';
import { IgxButtonDirective, IgxButtonModule } from '../directives/button/button.directive';
import { IgxRippleModule } from '../directives/ripple/ripple.directive';
import { IgxIconModule } from '../icon/index';
import { takeUntil } from 'rxjs/operators';
import { DisplayDensityBase, DisplayDensityToken } from '../core/density';
export var ButtonGroupAlignment;
(function (ButtonGroupAlignment) {
ButtonGroupAlignment[ButtonGroupAlignment["horizontal"] = 0] = "horizontal";
ButtonGroupAlignment[ButtonGroupAlignment["vertical"] = 1] = "vertical";
})(ButtonGroupAlignment || (ButtonGroupAlignment = {}));
var NEXT_ID = 0;
/**
* **Ignite UI for Angular Button Group** -
* [Documentation](https://www.infragistics.com/products/ignite-ui-angular/angular/components/buttongroup.html)
*
* The Ignite UI Button Group displays a group of buttons either vertically or horizontally. The group supports
* single, multiple and toggle selection.
*
* Example:
* ```html
* <igx-buttongroup multiSelection="true" [values]="fontOptions">
* </igx-buttongroup>
* ```
* The `fontOptions` value shown above is defined as:
* ```typescript
* this.fontOptions = [
* { icon: 'format_bold', selected: false },
* { icon: 'format_italic', selected: false },
* { icon: 'format_underlined', selected: false }];
* ```
*/
var IgxButtonGroupComponent = /** @class */ (function (_super) {
__extends(IgxButtonGroupComponent, _super);
function IgxButtonGroupComponent(_cdr, _renderer, _displayDensityOptions) {
var _this = _super.call(this, _displayDensityOptions) || this;
_this._cdr = _cdr;
_this._renderer = _renderer;
_this._displayDensityOptions = _displayDensityOptions;
_this._disabled = false;
_this.buttonClickNotifier$ = new Subject();
_this.queryListNotifier$ = new Subject();
/**
* An @Input property that sets the value of the `id` attribute. If not set it will be automatically generated.
* ```html
* <igx-buttongroup [id]="'igx-dialog-56'" [multiSelection]="!multi" [values]="alignOptions">
* ```
*/
_this.id = "igx-buttongroup-" + NEXT_ID++;
/**
* @hidden
*/
_this.zIndex = 0;
/**
* An @Input property that enables selecting multiple buttons. By default, multi-selection is false.
* ```html
* <igx-buttongroup [multiSelection]="false" [alignment]="alignment"></igx-buttongroup>
* ```
*/
_this.multiSelection = false;
/**
* @hidden
*/
_this.selectedIndexes = [];
/**
* An @Ouput property that emits an event when a button is selected.
*```typescript
*@ViewChild("toast")
*private toast: IgxToastComponent;
*public onSelect(buttongroup){
* this.toast.show()
*}
* //...
*```
*```html
* <igx-buttongroup #MyChild [multiSelection]="!multi" (onSelect)="onSelect($event)"></igx-buttongroup>
*<igx-toast #toast message="You have made a selection!"></igx-toast>
*```
*/
_this.onSelect = new EventEmitter();
/**
* An @Ouput property that emits an event when a button is deselected.
*```typescript
*@ViewChild("toast")
*private toast: IgxToastComponent;
*public onUnselect(buttongroup){
* this.toast.show()
*}
* //...
*```
*```html
* igx-buttongroup #MyChild [multiSelection]="multi" (onUnselect)="onUnselect($event)"></igx-buttongroup>
*<igx-toast #toast message="You have deselected a button!"></igx-toast>
*```
*/
_this.onUnselect = new EventEmitter();
return _this;
}
Object.defineProperty(IgxButtonGroupComponent.prototype, "buttons", {
/**
* A collection containing all buttons inside the button group.
*/
get: function () {
return __spread(this.viewButtons.toArray(), this.templateButtons.toArray());
},
enumerable: true,
configurable: true
});
Object.defineProperty(IgxButtonGroupComponent.prototype, "itemContentCssClass", {
/**
* Returns the CSS class of the item content of the `IgxButtonGroup`.
*```typescript
*@ViewChild("MyChild")
*public buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* let buttonSelect = this.buttonG.itemContentCssClass;
*}
*```
*/
get: function () {
return this._itemContentCssClass;
},
/**
* Allows you to set a style using the `itemContentCssClass` input.
* The value should be the CSS class name that will be applied to the button group.
*```typescript
*public style1 = "styleClass";
* //..
*```
* ```html
*<igx-buttongroup [itemContentCssClass]="style1" [multiSelection]="!multi" [values]="alignOptions">
*```
*/
set: function (value) {
this._itemContentCssClass = value || this._itemContentCssClass;
},
enumerable: true,
configurable: true
});
Object.defineProperty(IgxButtonGroupComponent.prototype, "disabled", {
/**
* An @Input property that allows you to disable the `igx-buttongroup` component. By default it's false.
* ```html
* <igx-buttongroup [disabled]="true" [multiSelection]="multi" [values]="fontOptions"></igx-buttongroup>
* ```
*/
get: function () {
return this._disabled;
},
set: function (value) {
var _this = this;
if (this._disabled !== value) {
this._disabled = value;
if (this.viewButtons && this.templateButtons) {
this.buttons.forEach(function (b) { return b.disabled = _this._disabled; });
}
}
},
enumerable: true,
configurable: true
});
Object.defineProperty(IgxButtonGroupComponent.prototype, "alignment", {
/**
* Returns the alignment of the `igx-buttongroup`.
*```typescript
*@ViewChild("MyChild")
*public buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* let buttonAlignment = this.buttonG.alignment;
*}
*```
*/
get: function () {
return this._isVertical ? ButtonGroupAlignment.vertical : ButtonGroupAlignment.horizontal;
},
/**
* Allows you to set the button group alignment.
* Available options are `ButtonGroupAlignment.horizontal` (default) and `ButtonGroupAlignment.vertical`.
* ```typescript
*public alignment = ButtonGroupAlignment.vertical;
* //..
* ```
* ```html
*<igx-buttongroup [multiSelection]="false" [values]="cities" [alignment]="alignment"></igx-buttongroup>
* ```
*/
set: function (value) {
this._isVertical = value === ButtonGroupAlignment.vertical;
},
enumerable: true,
configurable: true
});
Object.defineProperty(IgxButtonGroupComponent.prototype, "isVertical", {
/**
* Returns true if the `igx-buttongroup` alignment is vertical.
* Note that in order for the accessor to work correctly the property should be set explicitly.
* ```html
* <igx-buttongroup #MyChild [alignment]="alignment" [values]="alignOptions">
* ```
* ```typescript
* //...
*@ViewChild("MyChild")
*private buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* let orientation = this.buttonG.isVertical;
*}
*```
*/
get: function () {
return this._isVertical;
},
enumerable: true,
configurable: true
});
Object.defineProperty(IgxButtonGroupComponent.prototype, "selectedButtons", {
/**
* Gets the selected button/buttons.
*```typescript
*@ViewChild("MyChild")
*private buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* let selectedButton = this.buttonG.selectedButtons;
*}
*```
*/
get: function () {
var _this = this;
return this.buttons.filter(function (b, i) {
return _this.selectedIndexes.indexOf(i) !== -1;
});
},
enumerable: true,
configurable: true
});
/**
* Selects a button by its index.
*```typescript
*@ViewChild("MyChild")
*private buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* this.buttonG.selectButton(2);
* this.cdr.detectChanges();
*}
*```
* @memberOf {@link IgxButtonGroupComponent}
*/
IgxButtonGroupComponent.prototype.selectButton = function (index) {
var _this = this;
if (index >= this.buttons.length || index < 0) {
return;
}
var button = this.buttons[index];
var buttonElement = button.nativeElement;
this.selectedIndexes.push(index);
button.selected = true;
this._renderer.setAttribute(buttonElement, 'aria-pressed', 'true');
this._renderer.addClass(buttonElement, 'igx-button-group__item--selected');
this.onSelect.emit({ button: button, index: index });
var indexInViewButtons = this.viewButtons.toArray().indexOf(button);
if (indexInViewButtons !== -1) {
this.values[indexInViewButtons].selected = true;
}
// deselect other buttons if multiSelection is not enabled
if (!this.multiSelection && this.selectedIndexes.length > 1) {
this.buttons.forEach(function (b, i) {
if (i !== index && _this.selectedIndexes.indexOf(i) !== -1) {
_this.deselectButton(i);
}
});
}
};
/**
* Deselects a button by its index.
* ```typescript
*@ViewChild("MyChild")
*private buttonG: IgxButtonGroupComponent;
*ngAfterViewInit(){
* this.buttonG.deselectButton(2);
* this.cdr.detectChanges();
*}
* ```
* @memberOf {@link IgxButtonGroupComponent}
*/
IgxButtonGroupComponent.prototype.deselectButton = function (index) {
if (index >= this.buttons.length || index < 0) {
return;
}
var button = this.buttons[index];
var buttonElement = button.nativeElement;
this.selectedIndexes.splice(this.selectedIndexes.indexOf(index), 1);
button.selected = false;
this._renderer.setAttribute(buttonElement, 'aria-pressed', 'false');
this._renderer.removeClass(buttonElement, 'igx-button-group__item--selected');
this.onUnselect.emit({ button: button, index: index });
var indexInViewButtons = this.viewButtons.toArray().indexOf(button);
if (indexInViewButtons !== -1) {
this.values[indexInViewButtons].selected = false;
}
};
/**
* @hidden
*/
IgxButtonGroupComponent.prototype.ngAfterContentInit = function () {
var _this = this;
this.templateButtons.forEach(function (button) {
if (!button.initialDensity) {
button.displayDensity = _this.displayDensity;
}
});
};
/**
* @hidden
*/
IgxButtonGroupComponent.prototype.ngAfterViewInit = function () {
var _this = this;
var initButtons = function () {
// Cancel any existing buttonClick subscriptions
_this.buttonClickNotifier$.next();
_this.selectedIndexes.splice(0, _this.selectedIndexes.length);
// initial configuration
_this.buttons.forEach(function (button, index) {
var buttonElement = button.nativeElement;
if (_this.disabled) {
button.disabled = true;
}
if (button.selected) {
_this.selectButton(index);
}
button.buttonClick.pipe(takeUntil(_this.buttonClickNotifier$)).subscribe(function (ev) { return _this._clickHandler(ev, index); });
_this._renderer.addClass(buttonElement, 'igx-button-group__item');
});
};
this.viewButtons.changes.pipe(takeUntil(this.queryListNotifier$)).subscribe(function () { return initButtons(); });
this.templateButtons.changes.pipe(takeUntil(this.queryListNotifier$)).subscribe(function () { return initButtons(); });
initButtons();
this._cdr.detectChanges();
};
/**
* @hidden
*/
IgxButtonGroupComponent.prototype.ngOnDestroy = function () {
this.buttonClickNotifier$.next();
this.buttonClickNotifier$.complete();
this.queryListNotifier$.next();
this.queryListNotifier$.complete();
};
/**
*@hidden
*/
IgxButtonGroupComponent.prototype._clickHandler = function (event, i) {
if (this.selectedIndexes.indexOf(i) !== -1) {
this.deselectButton(i);
}
else {
this.selectButton(i);
}
};
IgxButtonGroupComponent.ctorParameters = function () { return [
{ type: ChangeDetectorRef },
{ type: Renderer2 },
{ type: undefined, decorators: [{ type: Optional }, { type: Inject, args: [DisplayDensityToken,] }] }
]; };
__decorate([
ViewChildren(IgxButtonDirective),
__metadata("design:type", QueryList)
], IgxButtonGroupComponent.prototype, "viewButtons", void 0);
__decorate([
ContentChildren(IgxButtonDirective),
__metadata("design:type", QueryList)
], IgxButtonGroupComponent.prototype, "templateButtons", void 0);
__decorate([
HostBinding('attr.id'),
Input(),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "id", void 0);
__decorate([
HostBinding('style.zIndex'),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "zIndex", void 0);
__decorate([
Input(),
__metadata("design:type", String),
__metadata("design:paramtypes", [String])
], IgxButtonGroupComponent.prototype, "itemContentCssClass", null);
__decorate([
Input(),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "multiSelection", void 0);
__decorate([
Input(),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "values", void 0);
__decorate([
Input(),
__metadata("design:type", Boolean),
__metadata("design:paramtypes", [Boolean])
], IgxButtonGroupComponent.prototype, "disabled", null);
__decorate([
Input(),
__metadata("design:type", Number),
__metadata("design:paramtypes", [Number])
], IgxButtonGroupComponent.prototype, "alignment", null);
__decorate([
Output(),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "onSelect", void 0);
__decorate([
Output(),
__metadata("design:type", Object)
], IgxButtonGroupComponent.prototype, "onUnselect", void 0);
IgxButtonGroupComponent = __decorate([
Component({
selector: 'igx-buttongroup',
template: "<div class=\"igx-button-group\" role=\"group\" [class.igx-button-group--vertical]=\"isVertical\">\n <button *ngFor=\"let button of values; let i = 'index'\"\n type=\"button\"\n igxButton=\"flat\"\n [displayDensity]=\"displayDensity\"\n [selected]=\"button.selected\"\n [attr.data-togglable]=\"button.togglable\"\n [disabled]=\"disabled || button.disabled\"\n [igxButtonColor]=\"button.color\"\n [igxButtonBackground]=\"button.bgcolor\"\n [igxLabel]=\"button.label\"\n [igxRipple]=\"button.ripple\"\n >\n <div class=\"igx-button-group__item-content {{ itemContentCssClass }}\">\n <igx-icon *ngIf=\"button.icon\" fontSet=\"material\">{{button.icon}}</igx-icon>\n <span *ngIf=\"button.label\">{{button.label}}</span>\n </div>\n </button>\n <ng-content></ng-content>\n</div>\n"
}),
__param(2, Optional()), __param(2, Inject(DisplayDensityToken)),
__metadata("design:paramtypes", [ChangeDetectorRef, Renderer2, Object])
], IgxButtonGroupComponent);
return IgxButtonGroupComponent;
}(DisplayDensityBase));
export { IgxButtonGroupComponent };
/**
* @hidden
*/
var IgxButtonGroupModule = /** @class */ (function () {
function IgxButtonGroupModule() {
}
IgxButtonGroupModule = __decorate([
NgModule({
declarations: [IgxButtonGroupComponent],
exports: [IgxButtonGroupComponent],
imports: [IgxButtonModule, CommonModule, IgxRippleModule, IgxIconModule]
})
], IgxButtonGroupModule);
return IgxButtonGroupModule;
}());
export { IgxButtonGroupModule };
//# 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{ CommonModule } from '@angular/common';\nimport {\n    AfterContentInit,\n    AfterViewInit,\n    Component,\n    ContentChildren,\n    ChangeDetectorRef,\n    EventEmitter,\n    HostBinding,\n    Inject,\n    Input,\n    NgModule,\n    Output,\n    Optional,\n    QueryList,\n    Renderer2,\n    ViewChildren,\n    OnDestroy\n} from '@angular/core';\nimport { Subject } from 'rxjs';\nimport { IgxButtonDirective, IgxButtonModule } from '../directives/button/button.directive';\nimport { IgxRippleModule } from '../directives/ripple/ripple.directive';\nimport { IgxIconModule } from '../icon/index';\nimport { takeUntil } from 'rxjs/operators';\nimport { DisplayDensityBase, DisplayDensityToken, IDisplayDensityOptions } from '../core/density';\nimport { IBaseEventArgs } from '../core/utils';\n\nexport enum ButtonGroupAlignment { horizontal, vertical }\nlet NEXT_ID = 0;\n\n/**\n * **Ignite UI for Angular Button Group** -\n * [Documentation](https://www.infragistics.com/products/ignite-ui-angular/angular/components/buttongroup.html)\n *\n * The Ignite UI Button Group displays a group of buttons either vertically or horizontally.  The group supports\n * single, multiple and toggle selection.\n *\n * Example:\n * ```html\n * <igx-buttongroup multiSelection=\"true\" [values]=\"fontOptions\">\n * </igx-buttongroup>\n * ```\n * The `fontOptions` value shown above is defined as:\n * ```typescript\n * this.fontOptions = [\n *   { icon: 'format_bold', selected: false },\n *   { icon: 'format_italic', selected: false },\n *   { icon: 'format_underlined', selected: false }];\n * ```\n */\n@Component({\n    selector: 'igx-buttongroup',\n    templateUrl: 'buttongroup-content.component.html'\n})\n\nexport class IgxButtonGroupComponent extends DisplayDensityBase implements AfterContentInit, AfterViewInit, OnDestroy {\n\n    private _disabled = false;\n    protected buttonClickNotifier$ = new Subject<boolean>();\n    protected queryListNotifier$ = new Subject<boolean>();\n\n    @ViewChildren(IgxButtonDirective) private viewButtons: QueryList<IgxButtonDirective>;\n    @ContentChildren(IgxButtonDirective) private templateButtons: QueryList<IgxButtonDirective>;\n\n    /**\n     * A collection containing all buttons inside the button group.\n     */\n    public get buttons(): IgxButtonDirective[] {\n        return [...this.viewButtons.toArray(), ...this.templateButtons.toArray()];\n    }\n\n    /**\n     * An @Input property that sets the value of the `id` attribute. If not set it will be automatically generated.\n     * ```html\n     *  <igx-buttongroup [id]=\"'igx-dialog-56'\" [multiSelection]=\"!multi\" [values]=\"alignOptions\">\n     * ```\n     */\n    @HostBinding('attr.id')\n    @Input()\n    public id = `igx-buttongroup-${NEXT_ID++}`;\n\n    /**\n     * @hidden\n     */\n    @HostBinding('style.zIndex')\n    public zIndex = 0;\n\n    /**\n     * Allows you to set a style using the `itemContentCssClass` input.\n     * The value should be the CSS class name that will be applied to the button group.\n     *```typescript\n     *public style1 = \"styleClass\";\n     * //..\n     *```\n     * ```html\n     *<igx-buttongroup [itemContentCssClass]=\"style1\" [multiSelection]=\"!multi\" [values]=\"alignOptions\">\n     *```\n     */\n    @Input() set itemContentCssClass(value: string) {\n        this._itemContentCssClass = value || this._itemContentCssClass;\n    }\n\n    /**\n     * Returns the CSS class of the item content of the `IgxButtonGroup`.\n     *```typescript\n     *@ViewChild(\"MyChild\")\n     *public buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *   let buttonSelect = this.buttonG.itemContentCssClass;\n     *}\n     *```\n     */\n    get itemContentCssClass(): string {\n        return this._itemContentCssClass;\n    }\n\n    /**\n     * An @Input property that enables selecting multiple buttons. By default, multi-selection is false.\n     * ```html\n     * <igx-buttongroup [multiSelection]=\"false\" [alignment]=\"alignment\"></igx-buttongroup>\n     * ```\n     */\n    @Input() public multiSelection = false;\n    /**\n     * An @Input property that allows setting the buttons in the button group.\n     * ```typescript\n     *  public ngOnInit() {\n     *      this.cities = [\n     *        new Button({\n     *          label: \"Sofia\"\n     *      }),\n     *        new Button({\n     *          label: \"London\"\n     *      }),\n     *        new Button({\n     *          label: \"New York\",\n     *          selected: true\n     *      }),\n     *        new Button({\n     *          label: \"Tokyo\"\n     *      })\n     *  ];\n     *  }\n     *  //..\n     * ```\n     * ```html\n     *  <igx-buttongroup [multiSelection]=\"false\" [values]=\"cities\"></igx-buttongroup>\n     * ```\n     */\n    @Input() public values: any;\n    /**\n     * An @Input property that allows you to disable the `igx-buttongroup` component. By default it's false.\n     * ```html\n     * <igx-buttongroup [disabled]=\"true\" [multiSelection]=\"multi\" [values]=\"fontOptions\"></igx-buttongroup>\n     * ```\n     */\n    @Input()\n    public get disabled(): boolean {\n        return this._disabled;\n    }\n    public set disabled(value: boolean) {\n        if (this._disabled !== value) {\n            this._disabled = value;\n\n            if (this.viewButtons && this.templateButtons) {\n                this.buttons.forEach((b) => b.disabled = this._disabled);\n            }\n        }\n    }\n\n    /**\n     * @hidden\n     */\n    public selectedIndexes: number[] = [];\n\n    /**\n     * Allows you to set the button group alignment.\n     * Available options are `ButtonGroupAlignment.horizontal` (default) and `ButtonGroupAlignment.vertical`.\n     * ```typescript\n     *public alignment = ButtonGroupAlignment.vertical;\n     * //..\n     * ```\n     * ```html\n     *<igx-buttongroup [multiSelection]=\"false\" [values]=\"cities\" [alignment]=\"alignment\"></igx-buttongroup>\n     * ```\n     */\n    @Input() set alignment(value: ButtonGroupAlignment) {\n        this._isVertical = value === ButtonGroupAlignment.vertical;\n    }\n    /**\n     * Returns the alignment of the `igx-buttongroup`.\n     *```typescript\n     *@ViewChild(\"MyChild\")\n     *public buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *    let buttonAlignment = this.buttonG.alignment;\n     *}\n     *```\n     */\n    get alignment(): ButtonGroupAlignment {\n        return this._isVertical ? ButtonGroupAlignment.vertical : ButtonGroupAlignment.horizontal;\n    }\n\n    /**\n     * An @Ouput property that emits an event when a button is selected.\n     *```typescript\n     *@ViewChild(\"toast\")\n     *private toast: IgxToastComponent;\n     *public onSelect(buttongroup){\n     *    this.toast.show()\n     *}\n     * //...\n     *```\n     *```html\n     * <igx-buttongroup #MyChild [multiSelection]=\"!multi\" (onSelect)=\"onSelect($event)\"></igx-buttongroup>\n     *<igx-toast #toast message=\"You have made a selection!\"></igx-toast>\n     *```\n     */\n    @Output() public onSelect = new EventEmitter<IButtonGroupEventArgs>();\n\n    /**\n     * An @Ouput property that emits an event when a button is deselected.\n     *```typescript\n     *@ViewChild(\"toast\")\n     *private toast: IgxToastComponent;\n     *public onUnselect(buttongroup){\n     *    this.toast.show()\n     *}\n     * //...\n     *```\n     *```html\n     * igx-buttongroup #MyChild [multiSelection]=\"multi\" (onUnselect)=\"onUnselect($event)\"></igx-buttongroup>\n     *<igx-toast #toast message=\"You have deselected a button!\"></igx-toast>\n     *```\n     */\n    @Output() public onUnselect = new EventEmitter<IButtonGroupEventArgs>();\n\n    /**\n     * Returns true if the `igx-buttongroup` alignment is vertical.\n     * Note that in order for the accessor to work correctly the property should be set explicitly.\n     * ```html\n     * <igx-buttongroup #MyChild [alignment]=\"alignment\" [values]=\"alignOptions\">\n     * ```\n     * ```typescript\n     * //...\n     *@ViewChild(\"MyChild\")\n     *private buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *    let orientation = this.buttonG.isVertical;\n     *}\n     *```\n     */\n    public get isVertical(): boolean {\n        return this._isVertical;\n    }\n    private _isVertical: boolean;\n    private _itemContentCssClass: string;\n\n    constructor(private _cdr: ChangeDetectorRef, private _renderer: Renderer2,\n        @Optional() @Inject(DisplayDensityToken) protected _displayDensityOptions: IDisplayDensityOptions) {\n        super(_displayDensityOptions);\n    }\n\n    /**\n     * Gets the selected button/buttons.\n     *```typescript\n     *@ViewChild(\"MyChild\")\n     *private buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *    let selectedButton = this.buttonG.selectedButtons;\n     *}\n     *```\n     */\n    get selectedButtons(): IgxButtonDirective[] {\n        return this.buttons.filter((b, i) => {\n            return this.selectedIndexes.indexOf(i) !== -1;\n        });\n\n    }\n\n    /**\n     * Selects a button by its index.\n     *```typescript\n     *@ViewChild(\"MyChild\")\n     *private buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *    this.buttonG.selectButton(2);\n     *    this.cdr.detectChanges();\n     *}\n     *```\n     * @memberOf {@link IgxButtonGroupComponent}\n     */\n    public selectButton(index: number) {\n        if (index >= this.buttons.length || index < 0) {\n            return;\n        }\n\n        const button = this.buttons[index];\n        const buttonElement = button.nativeElement;\n\n        this.selectedIndexes.push(index);\n        button.selected = true;\n\n        this._renderer.setAttribute(buttonElement, 'aria-pressed', 'true');\n        this._renderer.addClass(buttonElement, 'igx-button-group__item--selected');\n\n        this.onSelect.emit({ button: button, index: index });\n\n        const indexInViewButtons = this.viewButtons.toArray().indexOf(button);\n        if (indexInViewButtons !== -1) {\n            this.values[indexInViewButtons].selected = true;\n        }\n\n        // deselect other buttons if multiSelection is not enabled\n        if (!this.multiSelection && this.selectedIndexes.length > 1) {\n            this.buttons.forEach((b, i) => {\n                if (i !== index && this.selectedIndexes.indexOf(i) !== -1) {\n                    this.deselectButton(i);\n                }\n            });\n        }\n    }\n\n    /**\n     * Deselects a button by its index.\n     * ```typescript\n     *@ViewChild(\"MyChild\")\n     *private buttonG: IgxButtonGroupComponent;\n     *ngAfterViewInit(){\n     *    this.buttonG.deselectButton(2);\n     *    this.cdr.detectChanges();\n     *}\n     * ```\n     * @memberOf {@link IgxButtonGroupComponent}\n     */\n    public deselectButton(index: number) {\n        if (index >= this.buttons.length || index < 0) {\n            return;\n        }\n\n        const button = this.buttons[index];\n        const buttonElement = button.nativeElement;\n\n        this.selectedIndexes.splice(this.selectedIndexes.indexOf(index), 1);\n        button.selected = false;\n\n        this._renderer.setAttribute(buttonElement, 'aria-pressed', 'false');\n        this._renderer.removeClass(buttonElement, 'igx-button-group__item--selected');\n\n        this.onUnselect.emit({ button: button, index: index });\n\n        const indexInViewButtons = this.viewButtons.toArray().indexOf(button);\n        if (indexInViewButtons !== -1) {\n            this.values[indexInViewButtons].selected = false;\n        }\n    }\n\n    /**\n     * @hidden\n     */\n    public ngAfterContentInit() {\n        this.templateButtons.forEach((button) => {\n            if (!button.initialDensity) {\n                button.displayDensity = this.displayDensity;\n            }\n        });\n    }\n\n    /**\n     * @hidden\n     */\n    public ngAfterViewInit() {\n        const initButtons = () => {\n            // Cancel any existing buttonClick subscriptions\n            this.buttonClickNotifier$.next();\n\n            this.selectedIndexes.splice(0, this.selectedIndexes.length);\n\n            // initial configuration\n            this.buttons.forEach((button, index) => {\n                const buttonElement = button.nativeElement;\n\n                if (this.disabled) {\n                    button.disabled = true;\n                }\n\n                if (button.selected) {\n                    this.selectButton(index);\n                }\n\n                button.buttonClick.pipe(takeUntil(this.buttonClickNotifier$)).subscribe((ev) => this._clickHandler(ev, index));\n                this._renderer.addClass(buttonElement, 'igx-button-group__item');\n            });\n        };\n\n        this.viewButtons.changes.pipe(takeUntil(this.queryListNotifier$)).subscribe(() => initButtons());\n        this.templateButtons.changes.pipe(takeUntil(this.queryListNotifier$)).subscribe(() => initButtons());\n        initButtons();\n\n        this._cdr.detectChanges();\n    }\n\n    /**\n     * @hidden\n     */\n    public ngOnDestroy() {\n        this.buttonClickNotifier$.next();\n        this.buttonClickNotifier$.complete();\n\n        this.queryListNotifier$.next();\n        this.queryListNotifier$.complete();\n    }\n\n    /**\n     *@hidden\n     */\n    public _clickHandler(event, i) {\n        if (this.selectedIndexes.indexOf(i) !== -1) {\n            this.deselectButton(i);\n        } else {\n            this.selectButton(i);\n        }\n    }\n}\n\nexport interface IButtonGroupEventArgs extends IBaseEventArgs {\n    button: IgxButtonDirective;\n    index: number;\n}\n\n/**\n * @hidden\n */\n@NgModule({\n    declarations: [IgxButtonGroupComponent],\n    exports: [IgxButtonGroupComponent],\n    imports: [IgxButtonModule, CommonModule, IgxRippleModule, IgxIconModule]\n})\n\nexport class IgxButtonGroupModule {\n}\n"]}