import { EventEmitter, Injector, OnChanges, SimpleChanges } from '@angular/core';
import { CoreBaseComponent } from '../../controls/common/base.component';
import * as i0 from "@angular/core";
export declare enum Unicode {
    HorizontalEllipsis = "\u2026"
}
/**
 * Describes the clamped event of the ClampDirective
 */
export interface ClampedEvent {
    clamped: boolean;
}
/**
 *
 * @smeDoc {@label Clamp @id sme-clamp-directive}
 *
 * @overview
 * @file {@filepath ./examples/clamp-overview.md}
 *
 * @example {@label Basic Usage @id basic-usage}
 * @file {@filename component.html @filepath ./examples/basic-usage.component.html}
 * @file {@filename component.ts @filepath ./examples/basic-usage.component.ts}
 *
 * @example {@label Clamp with auto lines @id auto-lines}
 * @file {@filename component.html @filepath ./examples/auto-lines-clamp.component.html}
 * @file {@filename component.ts @filepath ./examples/auto-lines-clamp.component.ts}
 *
 */
export declare class ClampDirective extends CoreBaseComponent implements OnChanges {
    /**
     * The source name to use for logging
     */
    protected get logSourceName(): string;
    /**
     * The content to clamp.
     */
    smeClamp: any;
    /**
     * The number of lines to clamp, or auto to clamp whatever will fit in the element
     */
    smeClampLines: number | 'auto';
    /**
     * Event that outputs a value indicating whether the content is clamped or not
     */
    clamped: EventEmitter<ClampedEvent>;
    /**
     * The number of lines to clamp to
     */
    private get lineCount();
    /**
     * The height that the clamp should be contained within
     */
    private get clampHeight();
    /**
     * The line height of this element
     */
    private get lineHeight();
    /**
     * Indicates that content overflows the desired height of the clamp
     */
    private get needsClamping();
    private get renderedLines();
    private get breakWords();
    /**
     * Constructs a new instance of the ClampDirective
     * @param injector The injector for the sme base component
     */
    constructor(injector: Injector);
    /**
     * Host listener for page resize event.
     */
    onResize(): void;
    /**
     * Implementation of angular OnChanges interface
     * On every input change, we recalculate the clamp.
     */
    ngOnChanges(changes: SimpleChanges): void;
    private setBreakWords;
    private removeBreakWords;
    private resetClampContent;
    /**
     * Gets the initial host classes to be applied to this element
     */
    protected getInitialHostClasses(): string[];
    /**
     * Clamps the text of a node by doing a last child first process of
     * eliminating text until the host element fits in the clamp height.
     * while this method should support HTML content, our input to this directive is a string for now.
     * @param node The node to clamp
     * @returns true if the node was successfully clamped
     */
    private clamp;
    /**
     * Trims the last word from the string, or returns the original string if there is only one word
     * @param text the text to trim
     */
    private trimLastWord;
    static ɵfac: i0.ɵɵFactoryDeclaration<ClampDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<ClampDirective, "[smeClamp]", never, { "smeClamp": "smeClamp"; "smeClampLines": "smeClampLines"; }, { "clamped": "clamped"; }, never, never, false, never>;
}