ingo@20: package de.intevation.flys.client.client.ui;
ingo@20: 
ingo@20: import java.util.ArrayList;
ingo@20: import java.util.LinkedHashMap;
ingo@20: import java.util.List;
ingo@20: 
ingo@20: import com.google.gwt.core.client.GWT;
ingo@20: 
ingo@20: import com.smartgwt.client.widgets.Canvas;
ingo@20: import com.smartgwt.client.widgets.IButton;
ingo@20: import com.smartgwt.client.widgets.events.ClickEvent;
ingo@20: import com.smartgwt.client.widgets.events.ClickHandler;
ingo@20: import com.smartgwt.client.widgets.form.DynamicForm;
ingo@20: import com.smartgwt.client.widgets.form.fields.ComboBoxItem;
ingo@20: import com.smartgwt.client.widgets.layout.VLayout;
ingo@20: 
ingo@20: import de.intevation.flys.client.shared.model.Data;
ingo@20: import de.intevation.flys.client.shared.model.DataItem;
ingo@20: import de.intevation.flys.client.shared.model.DefaultData;
ingo@20: import de.intevation.flys.client.shared.model.DefaultDataItem;
ingo@20: 
ingo@20: import de.intevation.flys.client.client.FLYSMessages;
ingo@20: import de.intevation.flys.client.client.event.HasStepForwardHandlers;
ingo@20: import de.intevation.flys.client.client.event.StepForwardEvent;
ingo@20: import de.intevation.flys.client.client.event.StepForwardHandler;
ingo@20: 
ingo@20: 
ingo@20: /**
ingo@20:  * This UIProvider displays the DataItems of the Data object in a combo box.
ingo@20:  *
ingo@20:  * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
ingo@20:  */
ingo@20: public class SelectProvider implements UIProvider, HasStepForwardHandlers,
ingo@20:                                        ClickHandler
ingo@20: {
ingo@20:     /** The message class that provides i18n strings.*/
ingo@20:     protected FLYSMessages messages = GWT.create(FLYSMessages.class);
ingo@20: 
ingo@20:     /** The StepForwardHandlers.*/
ingo@20:     protected List<StepForwardHandler> forwardHandlers;
ingo@20: 
ingo@20:     /** The combobox.*/
ingo@20:     protected ComboBoxItem combobox;
ingo@20: 
ingo@20: 
ingo@20:     /**
ingo@20:      * Creates a new UIProvider instance of this class.
ingo@20:      */
ingo@20:     public SelectProvider() {
ingo@20:         forwardHandlers = new ArrayList<StepForwardHandler>();
ingo@20:     }
ingo@20: 
ingo@20: 
ingo@20:     public void addStepForwardHandler(StepForwardHandler handler) {
ingo@20:         if (handler != null) {
ingo@20:             GWT.log("SelectProvider - addStepForwardHandler()");
ingo@20:             forwardHandlers.add(handler);
ingo@20:         }
ingo@20: 
ingo@20:         GWT.log("Handlers now: " + forwardHandlers.size());
ingo@20:     }
ingo@20: 
ingo@20: 
ingo@20:     /**
ingo@20:      * This method is called after the user has clicked on the 'next' button to
ingo@20:      * step to the next state.
ingo@20:      *
ingo@20:      * @param e The StepForwardEvent.
ingo@20:      */
ingo@20:     protected void fireStepForwardEvent(StepForwardEvent e) {
ingo@20:         GWT.log("SelectProvider - fireStepForwardEvent() handlers: " + forwardHandlers.size());
ingo@20:         for (StepForwardHandler handler: forwardHandlers) {
ingo@20:             GWT.log("SelectProvider - fireStepForwardEvent()");
ingo@20:             handler.onStepForward(e);
ingo@20:         }
ingo@20:     }
ingo@20: 
ingo@20:     public void onClick(ClickEvent e) {
ingo@20:         GWT.log("SelectProvider - feed and advance...");
ingo@20:         Data[] data = getData();
ingo@20: 
ingo@20:         GWT.log("GO ON...");
ingo@20:         SelectProvider.this.fireStepForwardEvent(new StepForwardEvent(data));
ingo@20:     }
ingo@20: 
ingo@20:     /**
ingo@20:      * This method currently returns a
ingo@20:      * {@link com.smartgwt.client.widgets.form.DynamicForm} that contains all
ingo@20:      * data items in a combobox stored in <i>data</i>.
ingo@20:      *
ingo@20:      * @param data The {@link Data} object.
ingo@20:      *
ingo@20:      * @return a combobox.
ingo@20:      */
ingo@20:     public Canvas create(Data data) {
ingo@20:         VLayout v = new VLayout();
ingo@20: 
ingo@20:         Canvas content = createWidget(data);
ingo@20: 
ingo@20:         IButton button = new IButton(messages.next(), this);
ingo@20:         //IButton button = new IButton(messages.next(), new ClickHandler() {
ingo@20:         //    public void onClick(ClickEvent e) {
ingo@20:         //        GWT.log("SelectProvider - feed and advance...");
ingo@20:         //        Data[] data = getData();
ingo@20: 
ingo@20:         //        GWT.log("GO ON...");
ingo@20:         //        SelectProvider.this.fireStepForwardEvent(new StepForwardEvent(data));
ingo@20:         //    }
ingo@20:         //});
ingo@20: 
ingo@20:         v.addMember(content);
ingo@20:         v.addMember(button);
ingo@20: 
ingo@20:         return v;
ingo@20:     }
ingo@20: 
ingo@20: 
ingo@20:     /**
ingo@20:      * This method creates the content of the widget.
ingo@20:      *
ingo@20:      * @param data The {@link Data} object.
ingo@20:      *
ingo@20:      * @return a combobox.
ingo@20:      */
ingo@20:     protected Canvas createWidget(Data data) {
ingo@20:         GWT.log("SelectProvider - create()");
ingo@20: 
ingo@20:         DynamicForm form      = new DynamicForm();
ingo@20:         combobox = new ComboBoxItem("river");
ingo@20: 
ingo@20:         LinkedHashMap<String, String> it = new LinkedHashMap<String, String>();
ingo@20: 
ingo@20:         for (DataItem item: data.getItems()) {
ingo@20:             GWT.log("Add item: " + item.getLabel());
ingo@20:             it.put(item.getStringValue(), item.getLabel());
ingo@20:         }
ingo@20: 
ingo@20:         combobox.setValueMap(it);
ingo@20:         form.setItems(combobox);
ingo@20: 
ingo@20:         return form;
ingo@20:     }
ingo@20: 
ingo@20: 
ingo@20:     protected Data[] getData() {
ingo@20:         String selection = combobox.getValueAsString();
ingo@20: 
ingo@20:         GWT.log("SelectProvider - getData() Selected value = " + selection);
ingo@20:         DataItem item = new DefaultDataItem("river", null, selection);
ingo@20: 
ingo@20:         return new Data[] { new DefaultData(
ingo@20:             "river", null, null, new DataItem[] { item }, null) };
ingo@20:     }
ingo@20: }
ingo@20: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :