devextreme
Version:
HTML5 JavaScript Component Suite for Responsive Web Development
64 lines (63 loc) • 2.78 kB
JavaScript
/**
* DevExtreme (esm/__internal/grids/tree_list/m_virtual_scrolling.js)
* Version: 24.2.7
* Build date: Mon Apr 28 2025
*
* Copyright (c) 2012 - 2025 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import _extends from "@babel/runtime/helpers/esm/extends";
import {
extend
} from "../../../core/utils/extend";
import gridCoreUtils from "../../grids/grid_core/m_utils";
import {
data as virtualScrollingDataControllerExtender,
dataSourceAdapterExtender as virtualScrollingDataSourceAdapterExtender,
rowsView as virtualScrollingRowsViewExtender,
virtualScrollingModule
} from "../../grids/grid_core/virtual_scrolling/m_virtual_scrolling";
import dataSourceAdapterProvider from "./data_source_adapter/m_data_source_adapter";
import gridCore from "./m_core";
const oldDefaultOptions = virtualScrollingModule.defaultOptions;
virtualScrollingModule.extenders.views.rowsView = Base => class extends(virtualScrollingRowsViewExtender(Base)) {
_handleDataChanged(e) {
const {
operationTypes: operationTypes
} = e;
if (null !== e && void 0 !== e && e.isDataChanged && gridCoreUtils.isVirtualRowRendering(this) && operationTypes) {
const {
fullReload: fullReload,
pageIndex: pageIndex
} = operationTypes;
if (!fullReload && pageIndex) {
this._updateContentPosition()
}
}
super._handleDataChanged(e)
}
};
virtualScrollingModule.extenders.controllers.data = Base => class extends(virtualScrollingDataControllerExtender(Base)) {
_loadOnOptionChange() {
var _this$_dataSource;
const virtualScrollController = null === (_this$_dataSource = this._dataSource) || void 0 === _this$_dataSource ? void 0 : _this$_dataSource._virtualScrollController;
null === virtualScrollController || void 0 === virtualScrollController || virtualScrollController.reset();
super._loadOnOptionChange()
}
};
const dataSourceAdapterExtender = Base => class extends(virtualScrollingDataSourceAdapterExtender(Base)) {
changeRowExpand() {
return super.changeRowExpand.apply(this, arguments).done((() => {
const viewportItemIndex = this.getViewportItemIndex();
viewportItemIndex >= 0 && this.setViewportItemIndex(viewportItemIndex)
}))
}
};
gridCore.registerModule("virtualScrolling", _extends({}, virtualScrollingModule, {
defaultOptions: () => extend(true, oldDefaultOptions(), {
scrolling: {
mode: "virtual"
}
})
}));
dataSourceAdapterProvider.extend(dataSourceAdapterExtender);