328 lines
10 KiB
Java
328 lines
10 KiB
Java
package org.gcube.portlets.user.geoportaldataentry.client.ui;
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import java.util.List;
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import org.gcube.application.geoportalcommon.shared.products.ConcessioneDV;
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import org.gcube.portlets.user.geoportaldataentry.client.ConstantsGeoPortalDataEntryApp.RECORD_FIELD;
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import org.gcube.portlets.user.geoportaldataentry.client.ConstantsGeoPortalDataEntryApp.RECORD_TYPE;
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import org.gcube.portlets.user.geoportaldataentry.client.GeoPortalDataEntryApp;
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import org.gcube.portlets.user.geoportaldataentry.client.ui.table.ItemsTable;
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import org.gcube.portlets.user.geoportaldataentry.client.ui.table.SortedCellTable;
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import org.gcube.portlets.user.geoportaldataentry.client.ui.utils.LoaderIcon;
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import org.gcube.portlets.user.geoportaldataentry.shared.ResultSetPaginatedData;
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import org.gcube.portlets.user.geoportaldataentry.shared.SortFilter;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.user.cellview.client.SimplePager;
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import com.google.gwt.user.cellview.client.SimplePager.TextLocation;
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import com.google.gwt.user.client.Window;
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import com.google.gwt.user.client.rpc.AsyncCallback;
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import com.google.gwt.user.client.ui.FlowPanel;
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import com.google.gwt.user.client.ui.Label;
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import com.google.gwt.user.client.ui.VerticalPanel;
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import com.google.gwt.user.client.ui.Widget;
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import com.google.gwt.view.client.AsyncDataProvider;
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import com.google.gwt.view.client.HasData;
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import com.google.gwt.view.client.MultiSelectionModel;
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import com.google.gwt.view.client.Range;
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import com.google.gwt.view.client.SelectionModel;
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import com.google.gwt.view.client.SingleSelectionModel;
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/**
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* The Class GeonaRecordsPaginatedView.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
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*
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* Aug 4, 2021
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*/
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public class GeonaRecordsPaginatedView {
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private static final int ITEM_START_INDEX = 0;
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private static final int ITEMS_PER_PAGE = 30;
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private VerticalPanel vPanel = new VerticalPanel();
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private FlowPanel pagerPanel = new FlowPanel();
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private Boolean initClassFirstRangeChanged = false;
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private ItemsTable<ConcessioneDV> itemsTable;
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private MyCustomDataProvider<ConcessioneDV> dataProvider = new MyCustomDataProvider<ConcessioneDV>();
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protected Widget orginalLoadingIndicator = null;
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private LoaderIcon loadingPanel = new LoaderIcon("Loading data...");
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private int serverStartIndex;
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private HandlerManager eventBus;
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private RECORD_TYPE recordType;
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private SortFilter currentSortFilter;
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/**
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* Instantiates a new geona records paginated view.
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*
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* @param eventbus the eventbus
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* @param recordType the record type
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* @param displayFields the display fields
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* @param currentSortFilter the sort by field
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*/
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public GeonaRecordsPaginatedView(HandlerManager eventbus, RECORD_TYPE recordType,
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RECORD_FIELD[] displayFields, SortFilter currentSortFilter) {
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this.recordType = recordType;
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this.currentSortFilter = currentSortFilter;
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this.initClassFirstRangeChanged = true;
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this.eventBus = eventbus;
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itemsTable = new ItemsTable<ConcessioneDV>(eventbus, displayFields, currentSortFilter);
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itemsTable.initTable(null, null, dataProvider);
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orginalLoadingIndicator = itemsTable.getCellTable().getLoadingIndicator();
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initPagination(ITEMS_PER_PAGE);
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// loadNewPage(ITEM_START_INDEX, ITEMS_PER_PAGE, false);
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loadItemsForType(recordType);
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}
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/**
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* Gets the table data provider.
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*
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* @return the table data provider
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*/
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public AsyncDataProvider<ConcessioneDV> getTableDataProvider() {
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return (AsyncDataProvider<ConcessioneDV>) getCellTable().getDataProvider();
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}
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/**
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* Gets the cell tale.
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*
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* @return the cell tale
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*/
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private SortedCellTable<ConcessioneDV> getCellTable() {
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return itemsTable.getCellTable();
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}
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/**
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* Inits the pagination.
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*
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* @param itemsPerPage the items per page
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*/
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public void initPagination(int itemsPerPage) {
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SimplePager.Resources pagerResources = GWT.create(SimplePager.Resources.class);
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SimplePager pager = new SimplePager(TextLocation.CENTER, pagerResources, false, 0, true);
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pager.setDisplay(getCellTable());
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pager.setPageSize(itemsPerPage);
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pager.getElement().getStyle().setProperty("margin", "auto");
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vPanel.add(loadingPanel);
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vPanel.add(getCellTable());
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vPanel.getElement().addClassName("vPanel");
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pagerPanel.add(pager);
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}
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/**
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* Load new page.
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*
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* @param startIdx the start idx
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* @param limit the limit
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* @param resetStore the reset store
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* @param invalidCache the invalid cache
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*/
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private void loadNewPage(final int startIdx, final int limit, final boolean resetStore,
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final SortFilter currentSortFilter, final boolean invalidCache) {
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// initFirstRangeChanged = resetStore;
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GWT.log("loadNewPage with parameters [startIdx: " + startIdx + ", limit: " + limit + ", resetStore:"
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+ resetStore + "]");
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// showLoading(true);
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int newStartIndex = startIdx;
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if (resetStore) {
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GWT.log("Cleaning all data...");
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newStartIndex = 0;
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serverStartIndex = 0;
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GWT.log("Store reset performed start index is: " + newStartIndex);
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getTableDataProvider().updateRowCount(ITEMS_PER_PAGE, false);
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}
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loadConcessioni(newStartIndex, limit, serverStartIndex, currentSortFilter, invalidCache);
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}
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/**
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* Load items for type.
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*
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* @param recordType the record type
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*/
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public void loadItemsForType(RECORD_TYPE recordType) {
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this.recordType = recordType;
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getCellTable().setVisibleRangeAndClearData(new Range(ITEM_START_INDEX, ITEMS_PER_PAGE), false);
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loadNewPage(ITEM_START_INDEX, ITEMS_PER_PAGE, true, currentSortFilter, true);
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}
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/**
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* Sets the new page result.
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*
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* @param result the new new page result
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*/
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private void setNewPageResult(ResultSetPaginatedData result) {
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GWT.log("setNewPageResult: " + result);
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serverStartIndex = result.getServerEndIndex();
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SelectionModel<? super ConcessioneDV> sm = getCellTable().getSelectionModel();
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if (sm instanceof SingleSelectionModel) {
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SingleSelectionModel<ConcessioneDV> ssm = (SingleSelectionModel<ConcessioneDV>) sm;
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ssm.clear();
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} else if (sm instanceof MultiSelectionModel) {
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MultiSelectionModel<ConcessioneDV> msm = (MultiSelectionModel<ConcessioneDV>) sm;
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msm.clear();
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}
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getTableDataProvider().updateRowCount((int) result.getTotalItems(), true);
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getTableDataProvider().updateRowData(result.getClientStartIndex(), result.getData());
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if (result.getData().size() == 0) {
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getCellTable().setLoadingIndicator(new Label("No data"));
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} else {
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getCellTable().setLoadingIndicator(orginalLoadingIndicator);
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}
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GWT.log("Updating row data startIndex: " + result.getClientStartIndex() + " children size: "
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+ result.getData().size());
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GWT.log("getAsycnDataProvider().getDataDisplays().size(): " + getCellTable().getRowCount());
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if (result.isServerSearchFinished()) {
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GWT.log("Search finished!!!");
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getTableDataProvider().updateRowCount(getCellTable().getRowCount(), true);
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}
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// initFirstRangeChanged = false;
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}
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/**
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* Load concessioni.
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*
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* @param <T> the generic type
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* @param newStartIndex the new start index
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* @param limit the limit
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* @param serverIndex the server index
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*/
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private <T> void loadConcessioni(int newStartIndex, int limit, int serverIndex, SortFilter sortFilter,
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boolean invalidCache) {
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showLoading(true);
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GWT.log("calling loadItemsForStatus with parameters [startIndex: " + newStartIndex + ", limit: " + limit
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+ ", serverIndex:" + serverIndex + ", sortFilter: " + sortFilter + "]");
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GeoPortalDataEntryApp.greetingService.getListConcessioni(newStartIndex, limit, sortFilter, invalidCache,
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new AsyncCallback<ResultSetPaginatedData>() {
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@Override
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public void onFailure(Throwable caught) {
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showLoading(false);
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Window.alert(caught.getMessage());
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}
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@Override
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public void onSuccess(ResultSetPaginatedData result) {
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showLoading(false);
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setNewPageResult(result);
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}
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});
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}
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/**
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* Select items.
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*
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* @param select the select
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* @param limitToPage the limit to page
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*/
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public void selectItems(boolean select, boolean limitToPage) {
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SortedCellTable<ConcessioneDV> table = getCellTable();
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int rowSize = table.getVisibleItemCount();
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for (int i = 0; i < rowSize; i++) {
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ConcessioneDV item = table.getVisibleItem(i);
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itemsTable.getSelectionModel().setSelected(item, select);
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}
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}
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/**
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* Gets the select items.
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*
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* @return the select items
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*/
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public List<ConcessioneDV> getSelectItems() {
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return itemsTable.getSelectedItems();
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}
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// int latestRangeStart = -1;
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// int latestRangeLenght = -1;
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/**
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* A custom {@link AsyncDataProvider}.
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*
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* @author Francesco Mangiacrapa francesco.mangiacrapa@isti.cnr.it Jul 5, 2017
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* @param <T> the generic type
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*/
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public class MyCustomDataProvider<T> extends AsyncDataProvider<T> {
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/**
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* {@link #onRangeChanged(HasData)} is called when the table requests a new
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* range of data. You can push data back to the displays using
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* {@link #updateRowData(int, List)}.
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*
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* @param display the display
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*/
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@Override
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public void onRangeChanged(HasData<T> display) {
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// Get the new range.
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final Range range = display.getVisibleRange();
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int start = range.getStart();
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int length = range.getLength();
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// if(latestRangeStart!=start || latestRangeLenght!=length) {
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// GWT.log("ranges really changed");
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// latestRangeStart = start;
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// latestRangeLenght = length;
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// }else {
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// GWT.log("ranges DO NOT changed");
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// return;
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// }
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if (initClassFirstRangeChanged) {
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GWT.log("initClassFirstRangeChanged is true.. returning");
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initClassFirstRangeChanged = false;
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return;
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}
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GWT.log("Range changed: " + start + " " + length + " visible count: " + display.getVisibleItemCount());
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loadNewPage(start, length, false, currentSortFilter, false);
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// eventBus.fireEvent(new TableRangeViewChangedEvent<T>(start, length));
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}
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}
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/**
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* Gets the pager panel.
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*
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* @return the pager panel
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*/
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public VerticalPanel getCellPanel() {
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return vPanel;
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}
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/**
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* Set the panel in loading mode.
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*
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* @param show the show
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*/
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protected void showLoading(boolean show) {
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loadingPanel.setVisible(show);
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}
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/**
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* Gets the pager panel.
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*
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* @return the pager panel
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*/
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public FlowPanel getPagerPanel() {
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return pagerPanel;
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}
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}
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