tabular-data-open-widget/src/main/java/org/gcube/portlets/user/td/openwidget/client/TabResourcesSelectionPanel....

236 lines
8.3 KiB
Java

/**
*
*/
package org.gcube.portlets.user.td.openwidget.client;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.gcube.portlets.user.td.wizardwidget.client.dataresource.ResourceBundle;
import org.gcube.portlets.user.td.gwtservice.client.rpc.TDGWTServiceAsync;
import org.gcube.portlets.user.td.gwtservice.shared.tr.TabResource;
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.Resizable;
import com.sencha.gxt.widget.core.client.Resizable.Dir;
import com.sencha.gxt.widget.core.client.box.AlertMessageBox;
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.HideEvent;
import com.sencha.gxt.widget.core.client.event.SelectEvent;
import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;
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"
* <a href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
*
*/
public class TabResourcesSelectionPanel extends ContentPanel implements HasSelectionHandlers<TabResource> {
private static final TabResourcesProperties properties = GWT.create(TabResourcesProperties.class);
protected static final ColumnConfig<TabResource, String> nameColumn = new ColumnConfig<TabResource, String>(properties.name(), 50, "Name");
protected static final ColumnConfig<TabResource, String> agencyColumn = new ColumnConfig<TabResource, String>(properties.agency(), 50, "Agency");
protected static final ColumnConfig<TabResource, String> dateColumn = new ColumnConfig<TabResource, String>(properties.date(), 50, "Date");
protected Grid<TabResource> grid;
protected ResourceBundle res;
@SuppressWarnings("unchecked")
public TabResourcesSelectionPanel(ResourceBundle res)
{
this.res=res;
setHeaderVisible(false);
new Resizable(this, Dir.E, Dir.SE, Dir.S);
buildPanel(properties.id(), Arrays.<ColumnConfig<TabResource, ?>>asList(nameColumn, agencyColumn, dateColumn), nameColumn);
}
protected void buildPanel(ModelKeyProvider<TabResource> keyProvider, List<ColumnConfig<TabResource, ?>> columns, ColumnConfig<TabResource, ?> 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<TabResource> identity = new IdentityValueProvider<TabResource>();
final CheckBoxSelectionModel<TabResource> sm = new CheckBoxSelectionModel<TabResource>(identity);
ColumnModel<TabResource> cm = new ColumnModel<TabResource>(columns);
final ExtendedListStore<TabResource> store = new ExtendedListStore<TabResource>(keyProvider);
searchField.addKeyUpHandler(new KeyUpHandler() {
public void onKeyUp(KeyUpEvent event) {
Log.trace("searchTerm: "+searchField.getCurrentValue());
store.applyFilters();
}
});
store.addFilter(new StoreFilter<TabResource>() {
public boolean select(Store<TabResource> store, TabResource parent, TabResource item) {
String searchTerm = searchField.getCurrentValue();
if (searchTerm == null) return true;
return TabResourcesSelectionPanel.this.select(item, searchTerm);
}
});
store.setEnableFilters(true);
RpcProxy<ListLoadConfig, ListLoadResult<TabResource>> proxy = new RpcProxy<ListLoadConfig, ListLoadResult<TabResource>>() {
public void load(ListLoadConfig loadConfig, final AsyncCallback<ListLoadResult<TabResource>> callback) {
loadData(loadConfig, callback);
}
};
final ListLoader<ListLoadConfig, ListLoadResult<TabResource>> loader = new ListLoader<ListLoadConfig, ListLoadResult<TabResource>>(proxy);
loader.setRemoteSort(false);
loader.addLoadHandler(new LoadResultListStoreBinding<ListLoadConfig, TabResource, ListLoadResult<TabResource>>(store));
grid = new Grid<TabResource>(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(TabResource item, String searchTerm) {
if (item.getName()!=null && item.getName().toLowerCase().contains(searchTerm.toLowerCase())) return true;
if (item.getAgency()!=null &&item.getAgency().toLowerCase().contains(searchTerm.toLowerCase())) return true;
if (item.getDate()!=null && item.getDate().toLowerCase().contains(searchTerm.toLowerCase())) return true;
return false;
}
protected void loadData(ListLoadConfig loadConfig, final AsyncCallback<ListLoadResult<TabResource>> callback) {
TDGWTServiceAsync.INSTANCE.getTabularResources(new AsyncCallback<ArrayList<TabResource>>() {
public void onFailure(Throwable caught) {
callback.onFailure(caught);
AlertMessageBox d = new AlertMessageBox("Error!",
"Details: "+caught.getLocalizedMessage());
d.addHideHandler(new HideHandler() {
public void onHide(HideEvent event) {
//
}
});
d.show();
}
public void onSuccess(ArrayList<TabResource> result) {
Log.debug("loaded "+result.size()+" TabularResources");
/*for(TabResource tr:result){
Log.debug("TR:"+tr);
}*/
callback.onSuccess(new ListLoadResultBean<TabResource>(result));
}
});
}
public HandlerRegistration addSelectionHandler(SelectionHandler<TabResource> handler) {
return grid.getSelectionModel().addSelectionHandler(handler);
}
public TabResource 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();
}
}
}