import Tailwind from '../base/tailwind-base';
/**
 * @tag plus-textarea
 * @summary A form-associated textarea component with validation and styling.
 *
 * @csspart textarea - The native textarea element
 * @csspart label - The label element
 * @csspart caption - The caption/error message container
 *
 * @event plus-input - Emitted when the textarea value changes
 * @event plus-change - Emitted when the textarea value changes and loses focus
 * @event plus-focus - Emitted when the textarea gains focus
 * @event plus-blur - Emitted when the textarea loses focus
 * @event plus-invalid - Emitted when the textarea value is invalid
 *
 * @cssprop [--focus-ring-color=--primary-500] - Color of the focus ring
 * @cssprop [--error-color=--red-500] - Color used for error states
 */
export declare class PlusTextarea extends Tailwind {
    static styles: import("lit").CSSResult[];
    textarea: HTMLTextAreaElement;
    private validationMessage;
    /** The textarea's name attribute. */
    name: string;
    /** The textarea's value attribute. */
    value: string;
    /** The textarea's placeholder text. */
    placeholder: string;
    /** The size variant of the textarea. */
    size: 'sm' | 'md' | 'lg';
    /** Whether the textarea is disabled. */
    disabled: boolean;
    /** Whether the textarea is readonly. */
    readonly: boolean;
    /** Whether the textarea is required. */
    required: boolean;
    /** The label for the textarea. */
    label?: string;
    /** The minimum length of the value. */
    minlength?: number;
    /** The maximum length of the value. */
    maxlength?: number;
    /** Whether the textarea should automatically get focus. */
    autoFocus?: boolean;
    /** Caption text to display below the textarea. */
    caption?: string;
    /** Whether the textarea is in an error state. */
    error: boolean;
    /** The error message to display (overrides default validation messages). */
    errorMessage: string;
    /** Whether the textarea should take up full width. */
    fullWidth: boolean;
    /** Specifies the visible number of lines in a text area. */
    rows: number;
    /** Controls how the textarea can be resized. */
    resize: 'none' | 'vertical' | 'horizontal' | 'both';
    /** Specifies how the text in a text area is to be wrapped when submitted in a form. */
    wrap: 'hard' | 'soft' | 'off';
    /** Checks the validity of the textarea against constraints. */
    checkValidity(): boolean;
    /** Reports the validity state to the user. */
    reportValidity(): boolean;
    /** Sets a custom validation message. */
    setCustomValidity(message: string): void;
    private handleBlur;
    private handleChange;
    private handleFocus;
    private handleInput;
    private handleInvalid;
    /** Gets the appropriate validation message. */
    private getValidationMessage;
    /** Validates the textarea and updates state. */
    private validate;
    render(): import("lit-html").TemplateResult<1>;
}
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