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Java

/**
*
*/
package org.gcube.portlets.user.td.excelexportwidget.client;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.gcube.portlets.user.td.excelexportwidget.client.properties.ColumnDataProperties;
import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
import org.gcube.portlets.user.td.gwtservice.shared.excel.ExcelExportSession;
import org.gcube.portlets.user.td.gwtservice.shared.exception.TDGWTSessionExpiredException;
import org.gcube.portlets.user.td.widgetcommonevent.client.event.SessionExpiredEvent;
import org.gcube.portlets.user.td.widgetcommonevent.client.type.SessionExpiredType;
import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnData;
import org.gcube.portlets.user.td.widgetcommonevent.shared.tr.column.ColumnTypeCode;
import org.gcube.portlets.user.td.wizardwidget.client.WizardCard;
import org.gcube.portlets.user.td.wizardwidget.client.dataresource.ResourceBundle;
import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.event.dom.client.KeyUpEvent;
import com.google.gwt.event.dom.client.KeyUpHandler;
import com.google.gwt.event.logical.shared.HasSelectionHandlers;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.event.shared.HandlerRegistration;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.sencha.gxt.core.client.IdentityValueProvider;
import com.sencha.gxt.core.client.Style.SelectionMode;
import com.sencha.gxt.data.client.loader.RpcProxy;
import com.sencha.gxt.data.shared.ListStore;
import com.sencha.gxt.data.shared.ModelKeyProvider;
import com.sencha.gxt.data.shared.Store;
import com.sencha.gxt.data.shared.Store.StoreFilter;
import com.sencha.gxt.data.shared.loader.ListLoadConfig;
import com.sencha.gxt.data.shared.loader.ListLoadResult;
import com.sencha.gxt.data.shared.loader.ListLoadResultBean;
import com.sencha.gxt.data.shared.loader.ListLoader;
import com.sencha.gxt.data.shared.loader.LoadResultListStoreBinding;
import com.sencha.gxt.widget.core.client.ContentPanel;
import com.sencha.gxt.widget.core.client.button.TextButton;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer.VerticalLayoutData;
import com.sencha.gxt.widget.core.client.event.SelectEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent.SelectHandler;
import com.sencha.gxt.widget.core.client.form.TextField;
import com.sencha.gxt.widget.core.client.grid.CheckBoxSelectionModel;
import com.sencha.gxt.widget.core.client.grid.ColumnConfig;
import com.sencha.gxt.widget.core.client.grid.ColumnModel;
import com.sencha.gxt.widget.core.client.grid.Grid;
import com.sencha.gxt.widget.core.client.toolbar.LabelToolItem;
import com.sencha.gxt.widget.core.client.toolbar.ToolBar;
/**
*
* @author Giancarlo Panichi
*
*
*/
public class MeasureColumnSelectionPanel extends ContentPanel implements
HasSelectionHandlers<ColumnData> {
private static final ColumnDataProperties properties = GWT
.create(ColumnDataProperties.class);
private static final ColumnConfig<ColumnData, String> nameColumn = new ColumnConfig<ColumnData, String>(
properties.label(), 50, "Name");
private Grid<ColumnData> grid;
private WizardCard parent;
private ResourceBundle res;
private ExcelExportSession excelExportSession;
public MeasureColumnSelectionPanel(WizardCard parent, ResourceBundle res,
ExcelExportSession excelExportSession) {
this.parent = parent;
this.res = res;
this.excelExportSession = excelExportSession;
setHeaderVisible(false);
buildPanel(properties.id(),
Arrays.<ColumnConfig<ColumnData, ?>> asList(nameColumn),
nameColumn);
}
private void buildPanel(ModelKeyProvider<ColumnData> keyProvider,
List<ColumnConfig<ColumnData, ?>> columns,
ColumnConfig<ColumnData, ?> autoexpandColumn) {
ToolBar toolBar = new ToolBar();
toolBar.add(new LabelToolItem("Search: "));
final TextField searchField = new TextField();
toolBar.add(searchField);
TextButton btnReload = new TextButton();
// btnReload.setText("Reload");
btnReload.setIcon(res.refresh16());
btnReload.setToolTip("Reload");
toolBar.add(btnReload);
IdentityValueProvider<ColumnData> identity = new IdentityValueProvider<ColumnData>();
final CheckBoxSelectionModel<ColumnData> sm = new CheckBoxSelectionModel<ColumnData>(
identity);
ColumnModel<ColumnData> cm = new ColumnModel<ColumnData>(columns);
final ExtendedListStore<ColumnData> store = new ExtendedListStore<ColumnData>(
keyProvider);
searchField.addKeyUpHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
Log.trace("searchTerm: " + searchField.getCurrentValue());
store.applyFilters();
}
});
store.addFilter(new StoreFilter<ColumnData>() {
public boolean select(Store<ColumnData> store, ColumnData parent,
ColumnData item) {
String searchTerm = searchField.getCurrentValue();
if (searchTerm == null)
return true;
return MeasureColumnSelectionPanel.this
.select(item, searchTerm);
}
});
store.setEnableFilters(true);
RpcProxy<ListLoadConfig, ListLoadResult<ColumnData>> proxy = new RpcProxy<ListLoadConfig, ListLoadResult<ColumnData>>() {
public void load(ListLoadConfig loadConfig,
final AsyncCallback<ListLoadResult<ColumnData>> callback) {
loadData(loadConfig, callback);
}
};
final ListLoader<ListLoadConfig, ListLoadResult<ColumnData>> loader = new ListLoader<ListLoadConfig, ListLoadResult<ColumnData>>(
proxy);
loader.setRemoteSort(false);
loader.addLoadHandler(new LoadResultListStoreBinding<ListLoadConfig, ColumnData, ListLoadResult<ColumnData>>(
store));
grid = new Grid<ColumnData>(store, cm) {
@Override
protected void onAfterFirstAttach() {
super.onAfterFirstAttach();
Scheduler.get().scheduleDeferred(new ScheduledCommand() {
public void execute() {
loader.load();
}
});
}
};
sm.setSelectionMode(SelectionMode.SINGLE);
grid.setLoader(loader);
grid.setSelectionModel(sm);
grid.getView().setAutoExpandColumn(autoexpandColumn);
grid.getView().setStripeRows(true);
grid.getView().setColumnLines(true);
grid.getView().setAutoFill(true);
grid.setBorders(false);
grid.setLoadMask(true);
grid.setColumnReordering(true);
SelectHandler sh = new SelectHandler() {
public void onSelect(SelectEvent event) {
loader.load();
}
};
btnReload.addSelectHandler(sh);
VerticalLayoutContainer con = new VerticalLayoutContainer();
con.add(toolBar, new VerticalLayoutData(1, -1));
con.add(grid, new VerticalLayoutData(1, 1));
setWidget(con);
}
protected boolean select(ColumnData item, String searchTerm) {
if (item.getLabel() != null
&& item.getLabel().toLowerCase()
.contains(searchTerm.toLowerCase()))
return true;
return false;
}
protected void loadData(ListLoadConfig loadConfig,
final AsyncCallback<ListLoadResult<ColumnData>> callback) {
TDGWTServiceAsync.INSTANCE.getColumns(excelExportSession
.getTabResource().getTrId(),
new AsyncCallback<ArrayList<ColumnData>>() {
public void onFailure(Throwable caught) {
if (caught instanceof TDGWTSessionExpiredException) {
parent.getEventBus()
.fireEvent(
new SessionExpiredEvent(
SessionExpiredType.EXPIREDONSERVER));
} else {
Log.error("No ColumnData retrieved");
}
callback.onFailure(caught);
}
public void onSuccess(ArrayList<ColumnData> result) {
Log.trace("loaded " + result.size() + " ColumnData");
List<ColumnData> measureColumn = new ArrayList<>();
for (ColumnData column : result) {
if (column != null
&& column.getTypeCode() != null
&& column.getTypeCode().compareTo(
ColumnTypeCode.MEASURE.toString()) == 0) {
measureColumn.add(column);
}
}
callback.onSuccess(new ListLoadResultBean<ColumnData>(
measureColumn));
}
});
}
public HandlerRegistration addSelectionHandler(
SelectionHandler<ColumnData> handler) {
return grid.getSelectionModel().addSelectionHandler(handler);
}
/*
* public List<ColumnData> getSelectedItems() { return
* grid.getSelectionModel().getSelectedItems(); }
*/
public ColumnData getSelectedItem() {
return grid.getSelectionModel().getSelectedItem();
}
protected class ExtendedListStore<M> extends ListStore<M> {
public ExtendedListStore(ModelKeyProvider<? super M> keyProvider) {
super(keyProvider);
}
public void applyFilters() {
super.applyFilters();
}
}
}