teichmann@5835: package org.dive4elements.river.client.client.ui;
ingo@20: 
ingo@20: import com.google.gwt.core.client.GWT;
ingo@30: import com.smartgwt.client.types.VerticalAlignment;
ingo@20: import com.smartgwt.client.widgets.Canvas;
ingo@30: import com.smartgwt.client.widgets.Label;
ingo@20: import com.smartgwt.client.widgets.form.DynamicForm;
christian@4573: import com.smartgwt.client.widgets.form.fields.FormItem;
christian@4573: import com.smartgwt.client.widgets.form.fields.LinkItem;
ingo@592: import com.smartgwt.client.widgets.form.fields.SelectItem;
christian@4573: import com.smartgwt.client.widgets.form.fields.SpacerItem;
christian@4573: import com.smartgwt.client.widgets.form.fields.events.ClickEvent;
christian@4573: import com.smartgwt.client.widgets.form.fields.events.ClickHandler;
ingo@53: import com.smartgwt.client.widgets.layout.HLayout;
ingo@20: import com.smartgwt.client.widgets.layout.VLayout;
ingo@20: 
teichmann@5835: import org.dive4elements.river.client.client.FLYSConstants;
teichmann@5835: import org.dive4elements.river.client.client.event.StepForwardEvent;
teichmann@5835: import org.dive4elements.river.client.shared.model.Data;
teichmann@5835: import org.dive4elements.river.client.shared.model.DataItem;
teichmann@5835: import org.dive4elements.river.client.shared.model.DataList;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultData;
teichmann@5835: import org.dive4elements.river.client.shared.model.DefaultDataItem;
ingo@20: 
christian@4573: import java.util.ArrayList;
christian@4184: import java.util.Iterator;
christian@4184: import java.util.LinkedHashMap;
christian@4184: import java.util.Map;
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@49: public class SelectProvider
ingo@49: extends      AbstractUIProvider
ingo@20: {
christian@4184:     private static final long serialVersionUID = 4696637534424070726L;
christian@4184: 
ingo@20:     /** The message class that provides i18n strings.*/
ingo@211:     protected FLYSConstants messages = GWT.create(FLYSConstants.class);
ingo@20: 
ingo@20:     /** The combobox.*/
christian@4573:     protected DynamicForm form = new DynamicForm();
christian@4573: 
christian@4573:     public static final int COMBOBOX_THRESHOLD = 20;
ingo@38: 
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:      */
christian@4184:     @Override
ingo@51:     public Canvas create(DataList data) {
christian@4574:         VLayout v = new VLayout();
christian@4574:         v.setMembersMargin(10);
christian@4574:         v.addMember(createWidget(data));
christian@4574:         if(data.size() > COMBOBOX_THRESHOLD) {
christian@4574:             v.addMember(getNextButton());
christian@4574:         }
christian@4574:         return v;
christian@4574:     }
christian@4574: 
christian@4574: 
christian@4574:     protected Canvas createWidget(DataList data) {
christian@4573:         if (data.size() > COMBOBOX_THRESHOLD) {
christian@4574:             return createComboboxWidget(data);
christian@4573:         }
christian@4573:         else {
christian@4573:             return createListWidget(data);
christian@4573:         }
christian@4573:     }
ingo@20: 
ingo@20: 
christian@4184:     @Override
ingo@53:     public Canvas createOld(DataList dataList) {
ingo@53:         HLayout layout  = new HLayout();
ingo@53:         VLayout vLayout = new VLayout();
raimund@91:         layout.setWidth("400px");
ingo@53: 
ingo@53:         Label label = new Label(dataList.getLabel());
raimund@91:         label.setWidth("200px");
ingo@53: 
ingo@53:         int size = dataList.size();
ingo@53:         for (int i = 0; i < size; i++) {
ingo@53:             Data data        = dataList.get(i);
ingo@53:             DataItem[] items = data.getItems();
ingo@53: 
ingo@53:             for (DataItem item: items) {
ingo@53:                 HLayout hLayout = new HLayout();
ingo@53: 
ingo@53:                 hLayout.addMember(label);
ingo@61:                 hLayout.addMember(new Label(item.getLabel()));
ingo@53: 
ingo@53:                 vLayout.addMember(hLayout);
raimund@91:                 vLayout.setWidth("130px");
ingo@53:             }
ingo@53:         }
ingo@53: 
ingo@58:         Canvas back = getBackButton(dataList.getState());
ingo@58: 
ingo@53:         layout.addMember(label);
ingo@53:         layout.addMember(vLayout);
ingo@58:         layout.addMember(back);
ingo@53: 
ingo@53:         return layout;
ingo@53:     }
ingo@53: 
ingo@53: 
christian@4573:     protected Canvas createListWidget(DataList data) {
christian@4573:         VLayout layout = new VLayout();
christian@4573:         layout.setAlign(VerticalAlignment.TOP);
christian@4573:         layout.setHeight(25);
christian@4573:         layout.setWidth("100%");
christian@4573: 
christian@4573:         VLayout formLayout = new VLayout();
christian@4573:         formLayout.setLayoutTopMargin(20);
christian@4573:         formLayout.setLayoutLeftMargin(50);
christian@4573: 
christian@4573:         ClickHandler handler = new ClickHandler() {
christian@4573:             @Override
christian@4573:             public void onClick(ClickEvent event) {
christian@4573:                 LinkItem li = (LinkItem)event.getItem();
christian@4573:                 String attr = li.getAttribute(li.getName());
christian@4573:                 GWT.log("li.getTarget: " + attr + " " + li.getName());
christian@4573:                 DataItem item = new DefaultDataItem(
christian@4573:                     attr,
christian@4573:                     null,
christian@4573:                     attr);
christian@4573: 
christian@4573:                 Data d = new DefaultData(
christian@4573:                     li.getName(),
christian@4573:                     null,
christian@4573:                     null,
christian@4573:                     new DataItem [] { item });
christian@4573: 
christian@4573:                 Data [] odata = getData();
christian@4573:                 Data [] ndata = new Data[odata.length+1];
christian@4573:                 System.arraycopy(odata, 0, ndata, 0, odata.length);
christian@4573:                 ndata[odata.length] = d;
christian@4573: 
christian@4573:                 fireStepForwardEvent(new StepForwardEvent(ndata));
christian@4573:             }
christian@4573:         };
christian@4573: 
christian@4573:         for (int i = 0, size = data.size(); i < size; i++) {
christian@4573:             Data d = data.get(i);
christian@4573: 
christian@4573:             Label label = new Label(d.getDescription());
christian@4573:             label.setValign(VerticalAlignment.TOP);
christian@4573:             label.setHeight(20);
christian@4573:             label.setWidth(400);
christian@4573: 
christian@4573:             LinkedHashMap<String, String> initial = new LinkedHashMap<String, String>();
christian@4573:             ArrayList<FormItem> formItems = new ArrayList<FormItem>();
christian@4573: 
christian@4573:             for (DataItem item: d.getItems()) {
christian@4573:                 initial.put(item.getLabel().replace(' ', '_'), item.getStringValue());
christian@4573:                 GWT.log("put: " + item.getLabel().replace(' ', '_') + "=" + item.getStringValue());
christian@4573: 
christian@4573:                 LinkItem link = new LinkItem(d.getLabel());
christian@4573:                 link.setLinkTitle(item.getLabel());    // i18n text of the link
christian@4573:                 link.setAttribute(d.getLabel(), item.getStringValue()); // e.g. "calculation_mode":"foo"
christian@4573:                 link.setShowTitle(false);
christian@4573:                 link.setEndRow(true);
christian@4573:                 link.setWidth("350px");
christian@4573: 
christian@4573:                 SpacerItem space = new SpacerItem();
christian@4573:                 space.setWidth(15);
christian@4573:                 formItems.add(space);
christian@4573:                 formItems.add(link);
christian@4573: 
christian@4573:                 link.addClickHandler(handler);
christian@4573:             }
christian@4573: 
christian@4573:             form.setFields(formItems.toArray(new FormItem[0]));
christian@4573:             form.setValues(initial);
christian@4573: 
christian@4573:             layout.addMember(label);
christian@4573:             layout.addMember(form);
christian@4573:         }
christian@4573:         return layout;
christian@4573:     }
christian@4573: 
christian@4573:     protected Canvas createComboboxWidget(DataList data) {
christian@4573:         GWT.log("SelectProvider.createComboboxWidget()");
ingo@20: 
ingo@51:         VLayout layout   = new VLayout();
ingo@83:         layout.setAlign(VerticalAlignment.TOP);
ingo@83:         layout.setHeight(25);
ingo@20: 
christian@4184:         LinkedHashMap<String, String> initial = new LinkedHashMap<String, String>();
ingo@266: 
ingo@51:         int size = data.size();
ingo@51: 
ingo@51:         for (int i = 0; i < size; i++) {
ingo@51:             Data d = data.get(i);
ingo@51: 
ingo@51:             Label label = new Label(d.getDescription());
ingo@51:             label.setValign(VerticalAlignment.TOP);
ingo@53:             label.setHeight(20);
ingo@785:             label.setWidth(400);
ingo@51: 
ingo@594:             SelectItem combobox = new SelectItem(d.getLabel());
ingo@592:             combobox.setWidth(250);
ingo@51: 
ingo@51:             LinkedHashMap<String, String> it = new LinkedHashMap<String, String>();
ingo@51: 
ingo@519:             boolean  defaultSet = false;
ingo@519:             boolean  first      = true;
ingo@519: 
ingo@519:             DataItem def      = d.getDefault();
ingo@519:             String   defValue = def != null ? def.getStringValue() : null;
ingo@519: 
ingo@519:             if (defValue != null && defValue.length() > 0) {
ingo@519:                 initial.put(d.getLabel(), def.getStringValue());
ingo@519:                 defaultSet = true;
ingo@519:             }
ingo@266: 
ingo@51:             for (DataItem item: d.getItems()) {
ingo@519:                 if (!defaultSet && first) {
ingo@266:                     initial.put(d.getLabel(), item.getStringValue());
ingo@519:                     first = false;
ingo@266:                 }
ingo@266: 
ingo@51:                 it.put(item.getStringValue(), item.getLabel());
ingo@51:             }
ingo@51: 
ingo@51:             label.setWidth(50);
ingo@51:             combobox.setValueMap(it);
ingo@51:             combobox.setShowTitle(false);
ingo@51:             form.setItems(combobox);
ingo@51: 
ingo@51:             layout.addMember(label);
ingo@51:             layout.addMember(form);
ingo@20:         }
ingo@20: 
ingo@266:         form.setValues(initial);
ingo@266: 
ingo@30:         layout.setAlign(VerticalAlignment.TOP);
ingo@30: 
ingo@30:         return layout;
ingo@20:     }
ingo@20: 
ingo@20: 
christian@4184:     @Override
ingo@20:     protected Data[] getData() {
christian@4184:         Map<?,?> values  = form.getValues();
christian@4184:         Iterator<?> keys = values.keySet().iterator();
ingo@20: 
ingo@51:         Data[] list = new Data[values.size()];
ingo@51:         int       i = 0;
ingo@51: 
ingo@51:         while (keys.hasNext()) {
christian@4573:             String fieldname = ((String) keys.next()).replace('_', ' ');
ingo@51:             String selection = (String) values.get(fieldname);
ingo@51: 
ingo@51:             DataItem item    = new DefaultDataItem(fieldname, null, selection);
ingo@51: 
ingo@51:             list[i++] = new DefaultData(
ingo@51:                 fieldname, null, null, new DataItem[] { item });
ingo@51:         }
ingo@51: 
ingo@51:         return list;
ingo@20:     }
ingo@20: }
ingo@20: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :