import { BasePlugin } from '../types/base-plugin';
import { IGraphicElement, Point2D } from '../types';
export declare class SelectionPlugin extends BasePlugin {
    name: string;
    version: string;
    isSelecting: boolean;
    selectionStart: Point2D;
    selectionEnd: Point2D;
    private selectionIds;
    private mouseDownId;
    private static readonly CLICK_THRESHOLD;
    private elementsPlugin;
    protected onInstall(): void;
    protected onUninstall(): void;
    private handleMouseDown;
    private handleMouseMove;
    private handleMouseUp;
    /**
     * 清理框选 / 按下草稿状态（鼠标移出画布或异常事件触发时使用）。
     * 不会触发 selection:changed，也不访问 event.evt / event.point。
     */
    private endSelectionDraft;
    private isModifierPressed;
    private isDragged;
    private emitSelectionChanged;
    private getSelectedElements;
    private handleElementAdded;
    private handleElementRemoved;
    private findElementsInRect;
    private getClickElementId;
    private rectIntersect;
    selectElement(element: IGraphicElement): void;
    deselectElement(elementId: string): void;
    clearSelection(): void;
    selectElementByIds(ids: string[]): void;
    getSelectionElements(): IGraphicElement[];
    getSelectionElementIds(): string[];
    getCurrentElement(): IGraphicElement | null;
}
declare module '../types' {
    interface PluginMap {
        'selection-plugin': SelectionPlugin;
    }
}