import * as SDK from '../../core/sdk/sdk.js';
import * as NetworkForward from '../../panels/network/forward/forward.js';
import * as UI from '../../ui/legacy/legacy.js';
export declare class RequestHeadersView extends UI.Widget.VBox {
    #private;
    private request;
    private showRequestHeadersText;
    private showResponseHeadersText;
    private highlightedElement;
    private readonly root;
    private urlItem;
    private readonly requestMethodItem;
    private readonly statusCodeItem;
    private readonly remoteAddressItem;
    private readonly referrerPolicyItem;
    readonly responseHeadersCategory: Category;
    private readonly requestHeadersCategory;
    constructor(request: SDK.NetworkRequest.NetworkRequest);
    wasShown(): void;
    willHide(): void;
    private addEntryContextMenuHandler;
    private formatHeader;
    private formatHeaderObject;
    private refreshURL;
    private populateTreeElementWithSourceText;
    private refreshRequestHeaders;
    private refreshResponseHeaders;
    private refreshHTTPInformation;
    private refreshHeadersTitle;
    private refreshHeaders;
    private refreshHeadersText;
    private refreshRemoteAddress;
    private refreshReferrerPolicy;
    private toggleRequestHeadersText;
    private toggleResponseHeadersText;
    private createToggleButton;
    private createHeadersToggleButton;
    private clearHighlight;
    private revealAndHighlight;
    private getCategoryForSection;
    revealHeader(section: NetworkForward.UIRequestLocation.UIHeaderSection, header?: string): void;
}
export declare class Category extends UI.TreeOutline.TreeElement {
    toggleOnClick: boolean;
    private readonly expandedSetting;
    expanded: boolean;
    constructor(root: UI.TreeOutline.TreeOutline, name: string, title?: string);
    createLeaf(): UI.TreeOutline.TreeElement;
    onexpand(): void;
    oncollapse(): void;
}