Heres my code.. I'm using GWT 2.0.3 with smartGWT 2.2. I think this is
a GWT related question..
[CODE]
/**
*
*/
package org.gwt.venus.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.RootPanel;
/**
* @author npradeeptha
*
*/
import com.smartgwt.client.data.DataSource;
import com.smartgwt.client.data.DateRange;
import com.smartgwt.client.data.RelativeDate;
import com.smartgwt.client.widgets.form.DynamicForm;
import com.smartgwt.client.widgets.form.fields.ComboBoxItem;
import com.smartgwt.client.widgets.form.fields.DateRangeItem;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridField;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.client.widgets.layout.VLayout;
public class VenusData implements EntryPoint {
/* (non-Javadoc)
* @see com.google.gwt.core.client.EntryPoint#onModuleLoad()
*/
VenusDataSource vds = new VenusDataSource();
private RpcCallServiceAsync rpc = RpcInit.initRpc();
String[] designstrings = null;
@Override
public void onModuleLoad() {
// TODO Auto-generated method stub
initializeDesignsArray();
DataSource ds = vds.getDs();
VLayout layout = new VLayout(8);
HLayout searchFields = new HLayout();
searchFields.setBackgroundColor("Cyan");
DynamicForm searchForm = new DynamicForm();
ComboBoxItem cmbDesigns = new ComboBoxItem("cmbDesigns", "Design");
ComboBoxItem cmbCriteria = new ComboBoxItem("cmbCriteria",
"Criteria");
cmbDesigns.setWidth("*");
cmbCriteria.setWidth("*");
cmbDesigns.setType("comboBox");
//cmbDesigns.setValueMap(designstrings);
cmbCriteria.setValueMap("FAST","HARSHA_FAST","NIJ_1");
// Inline FilterEditor Example (MiniDateRangeItem)
final DateRangeItem rangeItem = new DateRangeItem("Date");
rangeItem.setWidth("*");
rangeItem.setShowTitle(false);
rangeItem.setAllowRelativeDates(true);
DateRange dateRange = new DateRange();
dateRange.setRelativeStartDate(new RelativeDate("m"));
dateRange.setRelativeEndDate(new RelativeDate("m"));
rangeItem.setValue(dateRange);
searchForm.setNumCols(6);
searchForm.setFields(cmbDesigns,cmbCriteria, rangeItem);
searchFields.addMember(searchForm);
// Create a ListGrid displaying data from the worldDS and also
displaying a FilterEditor
final ListGrid dataGrid = new ListGrid();
dataGrid.setWidth(655);
dataGrid.setHeight(240);
searchFields.setWidth(650);
ListGridField builds = new ListGridField("build", "Build");
builds.setWidth(130);
ListGridField criteria = new ListGridField("criteria",
"Criteria");
ListGridField design = new ListGridField("design", "Design");
ListGridField lut = new ListGridField("lut", "LUT");
ListGridField date = new ListGridField("date", "Date");
ListGridField lut4 = new ListGridField("lut4", "Eq LUT4");
ListGridField ble = new ListGridField("ble", "BLE FFs");
ListGridField slack = new ListGridField("slack", "Slack");
dataGrid.setFields(builds,criteria,design,date,slack,lut,lut4,ble);
dataGrid.setDataSource(ds);
dataGrid.setAutoFetchData(true);
System.out.println(designstrings.length); //*** Gives a null
pointer error.
cmbDesigns.setValueMap(designstrings); //does not set any values
since designstrings is null.
layout.addMember(searchFields);
layout.addMember(dataGrid);
layout.draw();
RootPanel.get("content").add(layout);
}
public void initializeDesignsArray(){
rpc.getDesign(new AsyncCallback<Design[]>() {
@Override
public void onFailure(Throwable caught) {
System.out.println("Design callback failed");
}
@Override
public void onSuccess(Design[] result) {
//System.out.println(result.length);
String[] designs = new String[result.length];
for(int i=0; i<designs.length; i++){
designs[i] = result[i].design;
System.out.println(designs[i]); //
Prints the items so the
callback works and gets data..
}
loadDesigns(designs);
}
});
}
public void loadDesigns(String[] result) {
designstrings = result;
System.out.println(designstrings.length); //works too
}
}
[/CODE]
I have commented on the code where it works and goes wrong.. The
CallBack works perfectly but the variable is always null. Please
explain whats going on. Thanks!!
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