vscroll/dist/esm2015/processes/adapter/reset.js

Virtual scroll engine

import { DatasourceProps } from '../../inputs/index';
import { Datasource } from '../../classes/datasource';
import { BaseAdapterProcessFactory, AdapterProcess, ProcessStatus } from '../misc/index';
export default class Reset extends BaseAdapterProcessFactory(AdapterProcess.reset) {
  static run(scroller, options) {
    const { datasource, buffer, viewport, state } = scroller;
    if (options) {
      const { data } = Reset.parseInput(scroller, options);
      if (!data.isValid) {
        return;
      }
      const constructed = options instanceof Datasource;
      Object.keys(DatasourceProps).forEach(key => {
        const param = data.params[key];
        const ds = datasource;
        if (param.isSet || (constructed && ds[key])) {
          ds[key] = param.value;
        }
      });
    }
    buffer.reset(true);
    viewport.paddings.backward.reset();
    viewport.paddings.forward.reset();
    const payload = { datasource };
    if (state.cycle.busy.get()) {
      payload.finalize = true;
      state.cycle.interrupter = Reset.process;
    }
    scroller.workflow.call({
      process: Reset.process,
      status: ProcessStatus.next,
      payload
    });
  }
}
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