/**
 * @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
 */
import { Directive, EventEmitter, Input, Output, NgZone, InjectionToken, Inject, Optional, } from '@angular/core';
import { Clipboard } from './clipboard';
import * as i0 from "@angular/core";
import * as i1 from "./clipboard";
/** Injection token that can be used to provide the default options to `CdkCopyToClipboard`. */
export const CDK_COPY_TO_CLIPBOARD_CONFIG = new InjectionToken('CDK_COPY_TO_CLIPBOARD_CONFIG');
/**
 * Provides behavior for a button that when clicked copies content into user's
 * clipboard.
 */
export class CdkCopyToClipboard {
    constructor(_clipboard, _ngZone, config) {
        this._clipboard = _clipboard;
        this._ngZone = _ngZone;
        /** Content to be copied. */
        this.text = '';
        /**
         * How many times to attempt to copy the text. This may be necessary for longer text, because
         * the browser needs time to fill an intermediate textarea element and copy the content.
         */
        this.attempts = 1;
        /**
         * Emits when some text is copied to the clipboard. The
         * emitted value indicates whether copying was successful.
         */
        this.copied = new EventEmitter();
        /** Copies that are currently being attempted. */
        this._pending = new Set();
        if (config && config.attempts != null) {
            this.attempts = config.attempts;
        }
    }
    /** Copies the current text to the clipboard. */
    copy(attempts = this.attempts) {
        if (attempts > 1) {
            let remainingAttempts = attempts;
            const pending = this._clipboard.beginCopy(this.text);
            this._pending.add(pending);
            const attempt = () => {
                const successful = pending.copy();
                if (!successful && --remainingAttempts && !this._destroyed) {
                    // We use 1 for the timeout since it's more predictable when flushing in unit tests.
                    this._currentTimeout = this._ngZone.runOutsideAngular(() => setTimeout(attempt, 1));
                }
                else {
                    this._currentTimeout = null;
                    this._pending.delete(pending);
                    pending.destroy();
                    this.copied.emit(successful);
                }
            };
            attempt();
        }
        else {
            this.copied.emit(this._clipboard.copy(this.text));
        }
    }
    ngOnDestroy() {
        if (this._currentTimeout) {
            clearTimeout(this._currentTimeout);
        }
        this._pending.forEach(copy => copy.destroy());
        this._pending.clear();
        this._destroyed = true;
    }
    static { this.ɵfac = i0.ɵɵngDeclareFactory({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkCopyToClipboard, deps: [{ token: i1.Clipboard }, { token: i0.NgZone }, { token: CDK_COPY_TO_CLIPBOARD_CONFIG, optional: true }], target: i0.ɵɵFactoryTarget.Directive }); }
    static { this.ɵdir = i0.ɵɵngDeclareDirective({ minVersion: "14.0.0", version: "16.1.1", type: CdkCopyToClipboard, selector: "[cdkCopyToClipboard]", inputs: { text: ["cdkCopyToClipboard", "text"], attempts: ["cdkCopyToClipboardAttempts", "attempts"] }, outputs: { copied: "cdkCopyToClipboardCopied" }, host: { listeners: { "click": "copy()" } }, ngImport: i0 }); }
}
i0.ɵɵngDeclareClassMetadata({ minVersion: "12.0.0", version: "16.1.1", ngImport: i0, type: CdkCopyToClipboard, decorators: [{
            type: Directive,
            args: [{
                    selector: '[cdkCopyToClipboard]',
                    host: {
                        '(click)': 'copy()',
                    },
                }]
        }], ctorParameters: function () { return [{ type: i1.Clipboard }, { type: i0.NgZone }, { type: undefined, decorators: [{
                    type: Optional
                }, {
                    type: Inject,
                    args: [CDK_COPY_TO_CLIPBOARD_CONFIG]
                }] }]; }, propDecorators: { text: [{
                type: Input,
                args: ['cdkCopyToClipboard']
            }], attempts: [{
                type: Input,
                args: ['cdkCopyToClipboardAttempts']
            }], copied: [{
                type: Output,
                args: ['cdkCopyToClipboardCopied']
            }] } });
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