zxing-js/library

import GridSampler from './GridSampler';
import DefaultGridSampler from './DefaultGridSampler';

export default class GridSamplerInstance {

    private static gridSampler: GridSampler = new DefaultGridSampler();

    /**
     * Sets the implementation of GridSampler used by the library. One global
     * instance is stored, which may sound problematic. But, the implementation provided
     * ought to be appropriate for the entire platform, and all uses of this library
     * in the whole lifetime of the JVM. For instance, an Android activity can swap in
     * an implementation that takes advantage of native platform libraries.
     *
     * @param newGridSampler The platform-specific object to install.
     */
    public static setGridSampler(newGridSampler: GridSampler): void {
        GridSamplerInstance.gridSampler = newGridSampler;
    }

    /**
     * @return the current implementation of GridSampler
     */
    public static getInstance(): GridSampler {
        return GridSamplerInstance.gridSampler;
    }

}