import { Directive, NgZone, ElementRef, Renderer2, Optional, Inject, Input, NgModule } from '@angular/core';
import { mixinDisabled, MatCommonModule } from '@angular/material/core';
import { AriaDescriber, A11yModule } from '@angular/cdk/a11y';
import { coerceBooleanProperty } from '@angular/cdk/coercion';
import { ANIMATION_MODULE_TYPE } from '@angular/platform-browser/animations';

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
let nextId = 0;
// Boilerplate for applying mixins to MatBadge.
/** @docs-private */
class MatBadgeBase {
}
const _MatBadgeMixinBase = mixinDisabled(MatBadgeBase);
/** Directive to display a text badge. */
class MatBadge extends _MatBadgeMixinBase {
    constructor(_ngZone, _elementRef, _ariaDescriber, _renderer, _animationMode) {
        super();
        this._ngZone = _ngZone;
        this._elementRef = _elementRef;
        this._ariaDescriber = _ariaDescriber;
        this._renderer = _renderer;
        this._animationMode = _animationMode;
        /** Whether the badge has any content. */
        this._hasContent = false;
        this._color = 'primary';
        this._overlap = true;
        /**
         * Position the badge should reside.
         * Accepts any combination of 'above'|'below' and 'before'|'after'
         */
        this.position = 'above after';
        /** Size of the badge. Can be 'small', 'medium', or 'large'. */
        this.size = 'medium';
        /** Unique id for the badge */
        this._id = nextId++;
        if (typeof ngDevMode === 'undefined' || ngDevMode) {
            const nativeElement = _elementRef.nativeElement;
            if (nativeElement.nodeType !== nativeElement.ELEMENT_NODE) {
                throw Error('matBadge must be attached to an element node.');
            }
        }
    }
    /** The color of the badge. Can be `primary`, `accent`, or `warn`. */
    get color() { return this._color; }
    set color(value) {
        this._setColor(value);
        this._color = value;
    }
    /** Whether the badge should overlap its contents or not */
    get overlap() { return this._overlap; }
    set overlap(val) {
        this._overlap = coerceBooleanProperty(val);
    }
    /** Message used to describe the decorated element via aria-describedby */
    get description() { return this._description; }
    set description(newDescription) {
        if (newDescription !== this._description) {
            const badgeElement = this._badgeElement;
            this._updateHostAriaDescription(newDescription, this._description);
            this._description = newDescription;
            if (badgeElement) {
                newDescription ? badgeElement.setAttribute('aria-label', newDescription) :
                    badgeElement.removeAttribute('aria-label');
            }
        }
    }
    /** Whether the badge is hidden. */
    get hidden() { return this._hidden; }
    set hidden(val) {
        this._hidden = coerceBooleanProperty(val);
    }
    /** Whether the badge is above the host or not */
    isAbove() {
        return this.position.indexOf('below') === -1;
    }
    /** Whether the badge is after the host or not */
    isAfter() {
        return this.position.indexOf('before') === -1;
    }
    ngOnChanges(changes) {
        const contentChange = changes['content'];
        if (contentChange) {
            const value = contentChange.currentValue;
            this._hasContent = value != null && `${value}`.trim().length > 0;
            this._updateTextContent();
        }
    }
    ngOnDestroy() {
        const badgeElement = this._badgeElement;
        if (badgeElement) {
            if (this.description) {
                this._ariaDescriber.removeDescription(badgeElement, this.description);
            }
            // When creating a badge through the Renderer, Angular will keep it in an index.
            // We have to destroy it ourselves, otherwise it'll be retained in memory.
            if (this._renderer.destroyNode) {
                this._renderer.destroyNode(badgeElement);
            }
        }
    }
    /**
     * Gets the element into which the badge's content is being rendered.
     * Undefined if the element hasn't been created (e.g. if the badge doesn't have content).
     */
    getBadgeElement() {
        return this._badgeElement;
    }
    /** Injects a span element into the DOM with the content. */
    _updateTextContent() {
        if (!this._badgeElement) {
            this._badgeElement = this._createBadgeElement();
        }
        else {
            this._badgeElement.textContent = this._stringifyContent();
        }
        return this._badgeElement;
    }
    /** Creates the badge element */
    _createBadgeElement() {
        const badgeElement = this._renderer.createElement('span');
        const activeClass = 'mat-badge-active';
        const contentClass = 'mat-badge-content';
        // Clear any existing badges which may have persisted from a server-side render.
        this._clearExistingBadges(contentClass);
        badgeElement.setAttribute('id', `mat-badge-content-${this._id}`);
        badgeElement.classList.add(contentClass);
        badgeElement.textContent = this._stringifyContent();
        if (this._animationMode === 'NoopAnimations') {
            badgeElement.classList.add('_mat-animation-noopable');
        }
        if (this.description) {
            badgeElement.setAttribute('aria-label', this.description);
        }
        this._elementRef.nativeElement.appendChild(badgeElement);
        // animate in after insertion
        if (typeof requestAnimationFrame === 'function' && this._animationMode !== 'NoopAnimations') {
            this._ngZone.runOutsideAngular(() => {
                requestAnimationFrame(() => {
                    badgeElement.classList.add(activeClass);
                });
            });
        }
        else {
            badgeElement.classList.add(activeClass);
        }
        return badgeElement;
    }
    /** Sets the aria-label property on the element */
    _updateHostAriaDescription(newDescription, oldDescription) {
        // ensure content available before setting label
        const content = this._updateTextContent();
        if (oldDescription) {
            this._ariaDescriber.removeDescription(content, oldDescription);
        }
        if (newDescription) {
            this._ariaDescriber.describe(content, newDescription);
        }
    }
    /** Adds css theme class given the color to the component host */
    _setColor(colorPalette) {
        if (colorPalette !== this._color) {
            const classList = this._elementRef.nativeElement.classList;
            if (this._color) {
                classList.remove(`mat-badge-${this._color}`);
            }
            if (colorPalette) {
                classList.add(`mat-badge-${colorPalette}`);
            }
        }
    }
    /** Clears any existing badges that might be left over from server-side rendering. */
    _clearExistingBadges(cssClass) {
        const element = this._elementRef.nativeElement;
        let childCount = element.children.length;
        // Use a reverse while, because we'll be removing elements from the list as we're iterating.
        while (childCount--) {
            const currentChild = element.children[childCount];
            if (currentChild.classList.contains(cssClass)) {
                element.removeChild(currentChild);
            }
        }
    }
    /** Gets the string representation of the badge content. */
    _stringifyContent() {
        // Convert null and undefined to an empty string which is consistent
        // with how Angular handles them in inside template interpolations.
        const content = this.content;
        return content == null ? '' : `${content}`;
    }
}
MatBadge.decorators = [
    { type: Directive, args: [{
                selector: '[matBadge]',
                inputs: ['disabled: matBadgeDisabled'],
                host: {
                    'class': 'mat-badge',
                    '[class.mat-badge-overlap]': 'overlap',
                    '[class.mat-badge-above]': 'isAbove()',
                    '[class.mat-badge-below]': '!isAbove()',
                    '[class.mat-badge-before]': '!isAfter()',
                    '[class.mat-badge-after]': 'isAfter()',
                    '[class.mat-badge-small]': 'size === "small"',
                    '[class.mat-badge-medium]': 'size === "medium"',
                    '[class.mat-badge-large]': 'size === "large"',
                    '[class.mat-badge-hidden]': 'hidden || !_hasContent',
                    '[class.mat-badge-disabled]': 'disabled',
                },
            },] }
];
MatBadge.ctorParameters = () => [
    { type: NgZone },
    { type: ElementRef },
    { type: AriaDescriber },
    { type: Renderer2 },
    { type: String, decorators: [{ type: Optional }, { type: Inject, args: [ANIMATION_MODULE_TYPE,] }] }
];
MatBadge.propDecorators = {
    color: [{ type: Input, args: ['matBadgeColor',] }],
    overlap: [{ type: Input, args: ['matBadgeOverlap',] }],
    position: [{ type: Input, args: ['matBadgePosition',] }],
    content: [{ type: Input, args: ['matBadge',] }],
    description: [{ type: Input, args: ['matBadgeDescription',] }],
    size: [{ type: Input, args: ['matBadgeSize',] }],
    hidden: [{ type: Input, args: ['matBadgeHidden',] }]
};

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */
class MatBadgeModule {
}
MatBadgeModule.decorators = [
    { type: NgModule, args: [{
                imports: [
                    A11yModule,
                    MatCommonModule
                ],
                exports: [MatBadge, MatCommonModule],
                declarations: [MatBadge],
            },] }
];

/**
 * @license
 * Copyright Google LLC All Rights Reserved.
 *
 * Use of this source code is governed by an MIT-style license that can be
 * found in the LICENSE file at https://angular.io/license
 */

/**
 * Generated bundle index. Do not edit.
 */

export { MatBadge, MatBadgeModule };
//# sourceMappingURL=badge.js.map