import type { EditorPlugin, IEditor, PluginEvent } from 'roosterjs-editor-types';
/**
 * An editor plugin that show a tooltip for existing link
 */
export default class HyperLink implements EditorPlugin {
    private getTooltipCallback;
    private target?;
    private onLinkClick?;
    private originalHref;
    private trackedLink;
    private editor;
    private disposer;
    /**
     * Create a new instance of HyperLink class
     * @param getTooltipCallback A callback function to get tooltip text for an existing hyperlink.
     * Default value is to return the href itself. If null, there will be no tooltip text.
     * @param target (Optional) Target window name for hyperlink. If null, will use "_blank"
     * @param onLinkClick (Optional) Open link callback (return false to use default behavior)
     */
    constructor(getTooltipCallback?: (href: string, a: HTMLAnchorElement) => string, target?: string | undefined, onLinkClick?: ((anchor: HTMLAnchorElement, mouseEvent: MouseEvent) => boolean | void) | undefined);
    /**
     * Get a friendly name of  this plugin
     */
    getName(): string;
    /**
     * Initialize this plugin
     * @param editor The editor instance
     */
    initialize(editor: IEditor): void;
    protected onMouse: (e: MouseEvent) => void;
    protected onBlur: (e: FocusEvent) => void;
    /**
     * Dispose this plugin
     */
    dispose(): void;
    /**
     * Handle events triggered from editor
     * @param event PluginEvent object
     */
    onPluginEvent(event: PluginEvent): void;
    /**
     * Try get href from an anchor element
     * The reason this is put in a try-catch is that
     * it has been seen that accessing href may throw an exception, in particular on IE/Edge
     */
    private tryGetHref;
    /**
     * Determines if KeyboardEvent is meant to edit content
     */
    private isContentEditValue;
    /**
     * Updates the href of the tracked link if the display text doesn't match href anymore
     */
    private updateLinkHrefIfShouldUpdate;
    /**
     * Clears the tracked link and its original href value so that it's back to default state
     */
    private resetLinkTracking;
    /**
     * Compares the normalized URL of inner text of element to its href to see if they match.
     */
    private doesLinkDisplayMatchHref;
    /**
     * Update href of an element in place to new display text if it's a valid URL
     */
    private updateLinkHref;
}