devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
43 lines (42 loc) • 1.82 kB
JavaScript
/**
* DevExtreme (esm/__internal/grids/tree_list/module_virtual_scrolling.js)
* Version: 22.1.9
* Build date: Tue Apr 18 2023
*
* Copyright (c) 2012 - 2023 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import {
extend
} from "../../../core/utils/extend";
import {
virtualScrollingModule
} from "../../../ui/grid_core/ui.grid_core.virtual_scrolling";
import gridCore from "./module_core";
import dataSourceAdapter from "./data_source_adapter/module";
const oldDefaultOptions = virtualScrollingModule.defaultOptions;
const originalDataControllerExtender = virtualScrollingModule.extenders.controllers.data;
const originalDataSourceAdapterExtender = virtualScrollingModule.extenders.dataSourceAdapter;
virtualScrollingModule.extenders.controllers.data = extend({}, originalDataControllerExtender, {
_loadOnOptionChange() {
const virtualScrollController = this._dataSource && this._dataSource._virtualScrollController;
virtualScrollController && virtualScrollController.reset();
this.callBase()
}
});
virtualScrollingModule.extenders.dataSourceAdapter = extend({}, originalDataSourceAdapterExtender, {
changeRowExpand() {
return this.callBase.apply(this, arguments).done(() => {
const viewportItemIndex = this.getViewportItemIndex();
viewportItemIndex >= 0 && this.setViewportItemIndex(viewportItemIndex)
})
}
});
gridCore.registerModule("virtualScrolling", extend({}, virtualScrollingModule, {
defaultOptions: () => extend(true, oldDefaultOptions(), {
scrolling: {
mode: "virtual"
}
})
}));
dataSourceAdapter.extend(virtualScrollingModule.extenders.dataSourceAdapter);