Method constructor

src/views/selection/SelectionManager.ts:21–28

(highlightContainer: HTMLElement)

    private onSelectionChangeCallback: ((selectedCount: number) => void) | null = null;
    
    constructor(highlightContainer: HTMLElement) {
        this.highlightContainer = highlightContainer;
        this.selectionBoxController = new SelectionBoxController({
            highlightContainer,
            clearSelection: () => this.clearSelection(),
            updateSelectedHighlights: () => this.updateSelectedHighlights()
        });
    }
    
    /**
     * 设置选择变化回调