teichmann@5861: /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
teichmann@5861:  * Software engineering by Intevation GmbH
teichmann@5861:  *
teichmann@5993:  * This file is Free Software under the GNU AGPL (>=v3)
teichmann@5861:  * and comes with ABSOLUTELY NO WARRANTY! Check out the
teichmann@5993:  * documentation coming with Dive4Elements River for details.
teichmann@5861:  */
teichmann@5861: 
teichmann@5835: package org.dive4elements.river.client.client.ui;
raimund@282: 
raimund@282: import com.google.gwt.core.client.GWT;
raimund@282: import com.smartgwt.client.types.VerticalAlignment;
raimund@282: import com.smartgwt.client.widgets.Canvas;
rrenkert@5928: import com.smartgwt.client.widgets.HTMLPane;
rrenkert@6119: import com.smartgwt.client.widgets.Img;
raimund@282: import com.smartgwt.client.widgets.Label;
rrenkert@6119: import com.smartgwt.client.widgets.events.VisibilityChangedEvent;
rrenkert@6119: import com.smartgwt.client.widgets.events.VisibilityChangedHandler;
raimund@282: import com.smartgwt.client.widgets.form.DynamicForm;
raimund@282: import com.smartgwt.client.widgets.form.fields.LinkItem;
christian@4064: import com.smartgwt.client.widgets.form.fields.events.ClickEvent;
christian@4064: import com.smartgwt.client.widgets.form.fields.events.ClickHandler;
rrenkert@5928: import com.smartgwt.client.widgets.form.fields.events.ItemHoverEvent;
rrenkert@5928: import com.smartgwt.client.widgets.form.fields.events.ItemHoverHandler;
raimund@282: import com.smartgwt.client.widgets.layout.HLayout;
raimund@282: import com.smartgwt.client.widgets.layout.VLayout;
raimund@282: 
christian@6349: import java.util.HashMap;
christian@6349: import java.util.Map;
christian@6349: 
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;
raimund@282: 
raimund@282: 
raimund@282: /**
raimund@282:  * This UIProvider displays the DataItems of the Data object in a list of links.
raimund@282:  *
raimund@282:  * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
raimund@282:  */
raimund@282: public class LinkSelection
raimund@282: extends      MapSelection
rrenkert@6119: implements   VisibilityChangedHandler
raimund@282: {
christian@4131: 
christian@4131:     private static final long serialVersionUID = -7138270638349711024L;
christian@4131: 
raimund@282:     /** The message class that provides i18n strings.*/
raimund@282:     protected FLYSConstants messages = GWT.create(FLYSConstants.class);
raimund@282: 
raimund@282:     /** The selected river*/
raimund@282:     protected Data river;
rrenkert@6119:     private static Map<String, Img> riverHighlight;
rrenkert@6119:     private static Map<String, HLayout> riverList;
rrenkert@6119:     private static String selected;
aheinecke@6019:     private static HLayout columns;
rrenkert@5928: 
rrenkert@5928:     private static Trigger trigger;
rrenkert@5928: 
rrenkert@5928:     private Canvas module;
rrenkert@5928: 
aheinecke@6019: 
rrenkert@5928:     private class Trigger {
rrenkert@5928: 
christian@6349:         private final LinkSelection ls;
rrenkert@5928: 
rrenkert@5928:         public Trigger(LinkSelection ls) {
rrenkert@5928:             this.ls = ls;
rrenkert@5928:         }
rrenkert@5928: 
rrenkert@5928:         public void trigger(String name) {
rrenkert@5928:             DataItem item = new DefaultDataItem(
rrenkert@5928:                 name,
rrenkert@5928:                 null,
rrenkert@5928:                 name);
rrenkert@5928: 
rrenkert@5928:             river = new DefaultData(
rrenkert@5928:                 "river",
rrenkert@5928:                 null,
rrenkert@5928:                 null,
rrenkert@5928:                 new DataItem [] {item});
rrenkert@5928:             this.ls.fireStepForwardEvent (new StepForwardEvent (getData()));
rrenkert@5928:         }
rrenkert@5928:     }
raimund@282: 
raimund@282:     /**
raimund@282:      * This method currently returns a
raimund@282:      * {@link com.smartgwt.client.widgets.form.DynamicForm} that contains all
raimund@282:      * data items in a list of links stored in <i>data</i>.
raimund@282:      *
raimund@282:      * @param data The {@link Data} object.
raimund@282:      *
raimund@282:      * @return a combobox.
raimund@282:      */
christian@4064:     @Override
raimund@282:     public Canvas create(DataList data) {
rrenkert@5928:         trigger = new Trigger(this);
rrenkert@5928:         createCallback();
rrenkert@6119:         riverHighlight = new HashMap<String, Img>();
rrenkert@6119:         riverList = new HashMap<String, HLayout>();
rrenkert@5928: 
raimund@282:         VLayout v = new VLayout();
raimund@282:         v.setMembersMargin(10);
raimund@282:         v.setAlign(VerticalAlignment.TOP);
raimund@282:         if (data.getState() == null) {
rrenkert@5928:             module = super.createWidget(data);
raimund@282:             v.addMember(module);
raimund@282:         }
rrenkert@5928:         else {
rrenkert@5928:             module = null;
rrenkert@5928:         }
raimund@282:         Canvas content = createWidget(data);
raimund@282:         v.addMember(content);
raimund@282: 
raimund@282:         return v;
raimund@282:     }
raimund@282: 
raimund@282: 
christian@4064:     @Override
raimund@282:     public Canvas createOld(DataList dataList) {
raimund@282:         HLayout layout  = new HLayout();
raimund@282:         VLayout vLayout = new VLayout();
raimund@282:         layout.setWidth("400px");
raimund@282: 
raimund@282:         Label label = new Label(dataList.getLabel());
raimund@282:         label.setWidth("200px");
raimund@282: 
raimund@282:         int size = dataList.size();
raimund@282:         for (int i = 0; i < size; i++) {
raimund@282:             Data data        = dataList.get(i);
raimund@282:             DataItem[] items = data.getItems();
raimund@282: 
raimund@282:             for (DataItem item: items) {
raimund@282:                 HLayout hLayout = new HLayout();
raimund@282: 
raimund@282:                 hLayout.addMember(label);
raimund@282:                 hLayout.addMember(new Label(item.getLabel()));
raimund@282: 
raimund@282:                 vLayout.addMember(hLayout);
raimund@282:                 vLayout.setWidth("130px");
raimund@282:             }
raimund@282:         }
raimund@282: 
raimund@282:         layout.addMember(label);
raimund@282:         layout.addMember(vLayout);
raimund@282: 
raimund@282:         return layout;
raimund@282:     }
raimund@282: 
raimund@282: 
raimund@282:     /**
raimund@282:      * This method creates the content of the widget.
raimund@282:      *
raimund@282:      * @param data The {@link Data} object.
raimund@282:      *
raimund@282:      * @return a list of links
raimund@282:      */
christian@4064:     @Override
raimund@282:     protected Canvas createWidget(DataList data) {
raimund@282:         GWT.log("LinkSelection - create()");
raimund@282: 
raimund@282:         VLayout layout   = new VLayout();
raimund@282:         layout.setAlign(VerticalAlignment.TOP);
aheinecke@6019:         // XXX: This an evil hack because of misuse of static vars!
raimund@282:         layout.setHeight(25);
aheinecke@6019:         columns = new HLayout();
rrenkert@5928:         VLayout formLayout1 = new VLayout();
rrenkert@5928:         VLayout formLayout2 = new VLayout();
raimund@282: 
rrenkert@5928:         formLayout1.setLayoutLeftMargin(60);
raimund@282: 
raimund@282:         int size = data.size();
raimund@282: 
raimund@282:         for (int i = 0; i < size; i++) {
raimund@282:             Data d = data.get(i);
raimund@282: 
raimund@282:             Label label = new Label(d.getDescription());
raimund@282:             label.setValign(VerticalAlignment.TOP);
raimund@282:             label.setHeight(20);
rrenkert@5928:             label.setWidth(400);
rrenkert@5928: 
rrenkert@5928:             int counter = 0;
raimund@282:             for (DataItem item: d.getItems()) {
rrenkert@6119:                 HLayout row = new HLayout();
rrenkert@7959:                 row.setTitle(item.getLabel());
raimund@282:                 LinkItem link = new LinkItem("river");
rrenkert@6119:                 link.setHoverDelay(0);
raimund@282:                 link.setLinkTitle(item.getLabel());
rrenkert@7764:                 link.setValue(item.getStringValue());
raimund@282:                 link.setShowTitle(false);
rrenkert@6119:                 Img img = new Img();
rrenkert@6119:                 img.setShowTitle(false);
rrenkert@6130:                 img.setSrc("symbol_selected.png");
rrenkert@6130:                 img.setWidth(18);
rrenkert@6130:                 img.setHeight(18);
rrenkert@6119:                 img.setVisible(false);
rrenkert@6119:                 Canvas container = new Canvas();
rrenkert@6119:                 container.addChild(img);
rrenkert@6119:                 container.setHeight(20);
rrenkert@6119:                 container.setWidth(20);
raimund@282:                 DynamicForm f = new DynamicForm();
rrenkert@6119:                 riverList.put(item.getStringValue(), row);
rrenkert@6119:                 riverHighlight.put(item.getStringValue(), img);
raimund@282:                 f.setItems(link);
rrenkert@6119:                 row.addMember(container);
rrenkert@6119:                 row.addMember(f);
rrenkert@6119:                 row.addVisibilityChangedHandler(this);
rrenkert@6119:                 link.setColSpan(20);
rrenkert@5928:                 if (counter < d.getItems().length/2) {
rrenkert@6119:                     formLayout1.addMember(row);
rrenkert@5928:                 }
rrenkert@5928:                 else {
rrenkert@6119:                     formLayout2.addMember(row);
rrenkert@5928:                 }
rrenkert@5928:                 counter++;
raimund@282:                 link.addClickHandler(new ClickHandler() {
christian@4064:                     @Override
raimund@282:                     public void onClick(ClickEvent event) {
raimund@282:                         DataItem item = new DefaultDataItem(
raimund@282:                             ((LinkItem)event.getItem()).getLinkTitle(),
raimund@282:                             null,
raimund@282:                             ((LinkItem)event.getItem()).getLinkTitle());
raimund@282: 
raimund@282:                             river = new DefaultData(
raimund@282:                                 "river",
raimund@282:                                 null,
raimund@282:                                 null,
raimund@282:                                 new DataItem [] {item});
raimund@282:                         fireStepForwardEvent (new StepForwardEvent (getData()));
raimund@282:                     }
raimund@282:                 });
rrenkert@5928:                 link.addItemHoverHandler(new ItemHoverHandler() {
rrenkert@5928:                     @Override
rrenkert@5928:                     public void onItemHover(ItemHoverEvent event) {
rrenkert@7764:                         String river =
rrenkert@7764:                             ((LinkItem)event.getItem()).getValue().toString();
teichmann@6146:                         Img item = riverHighlight.get(river);
teichmann@6146:                         if (item != null) {
rrenkert@6119:                             item.setVisible(true);
rrenkert@6119:                             if (selected != null && !selected.equals(river)) {
rrenkert@6119:                                 riverHighlight.get(selected).setVisible(false);
rrenkert@5928:                             }
rrenkert@6119:                             callHighlightRiver(river);
rrenkert@6119:                             selected = river;
aheinecke@6019:                         }
rrenkert@5928:                     }
rrenkert@5928:                 });
rrenkert@5928:             }
raimund@282: 
rrenkert@5928:             if (module != null) {
rrenkert@6119:                 getModuleSelection().setRivers(riverList);
raimund@282:             }
raimund@282:             label.setWidth(50);
raimund@282: 
raimund@282:             layout.addMember(label);
aheinecke@6019:             columns.addMember(formLayout1);
aheinecke@6019:             columns.addMember(formLayout2);
aheinecke@6019:             layout.addMember(columns);
raimund@282: 
rrenkert@5928:         }
rrenkert@5928:         HTMLPane map = new HTMLPane();
rrenkert@5928:         map.setContentsURL("images/FLYS_Karte_interactive.html");
rrenkert@5928: 
felix@3546:         helperContainer.addMember(map);
raimund@282:         return layout;
raimund@282:     }
raimund@282: 
raimund@282: 
christian@4064:     @Override
raimund@282:     protected Data[] getData() {
raimund@282:         Data[] module = super.getData();
raimund@282:         if (module != null) {
raimund@282:             return new Data[] {module[0], river};
raimund@282:         }
raimund@282:         else {
raimund@282:             return new Data[] {river};
raimund@282:         }
raimund@282:     }
rrenkert@5928: 
rrenkert@5928:     private native void createCallback() /*-{
rrenkert@5928:         $wnd.highlightRiver = @org.dive4elements.river.client.client.ui.LinkSelection::highlightCallback(Ljava/lang/String;);
rrenkert@6119:         $wnd.unHighlightRiver = @org.dive4elements.river.client.client.ui.LinkSelection::unHighlightCallback(Ljava/lang/String;);
rrenkert@5928:         $wnd.selectRiver = @org.dive4elements.river.client.client.ui.LinkSelection::selectCallback(Ljava/lang/String;);
rrenkert@5928:         $wnd.availableRiver = @org.dive4elements.river.client.client.ui.LinkSelection::availableRiver(Ljava/lang/String;);
rrenkert@5928:     }-*/;
rrenkert@5928: 
rrenkert@5928:     private static void highlightCallback(String name) {
rrenkert@6119:         if (riverHighlight.containsKey(name)) {
rrenkert@6119:             riverHighlight.get(name).setVisible(true);
rrenkert@6119:             if(selected != null && !selected.equals(name)) {
rrenkert@6119:                 riverHighlight.get(selected).setVisible(false);
rrenkert@6119:             }
rrenkert@6119:             selected = name;
aheinecke@6019:         }
rrenkert@6119:     }
rrenkert@6119: 
rrenkert@6119:     private static void unHighlightCallback(String name) {
rrenkert@6119:         if (riverHighlight.containsKey(name)) {
rrenkert@6119:             riverHighlight.get(name).setVisible(false);
rrenkert@6119:             selected = null;
rrenkert@5928:         }
rrenkert@5928:     }
rrenkert@5928: 
rrenkert@5928:     private static boolean availableRiver(String river) {
rrenkert@6119:         HLayout row = riverList.get(river);
rrenkert@6119:         return row != null && row.isVisible();
rrenkert@5928:     }
rrenkert@5928: 
rrenkert@5928:     private static void selectCallback(String name) {
aheinecke@6019:         if (availableRiver(name)) {
rrenkert@7959:             String river = riverList.get(name).getTitle();
rrenkert@7959:             trigger.trigger(river);
rrenkert@5966:         }
rrenkert@5928:     }
rrenkert@5928: 
rrenkert@6354:     private native void callHighlightRiver(String name) /*-{
rrenkert@5928:         $wnd.highlight(name);
rrenkert@5928:     }-*/;
rrenkert@5928: 
rrenkert@6119: 
rrenkert@6119:     @Override
rrenkert@6119:     public void onVisibilityChanged(VisibilityChangedEvent event) {
rrenkert@6119:         for (Map.Entry<String, Img> entry: riverHighlight.entrySet()) {
rrenkert@6119:             entry.getValue().setVisible(false);
rrenkert@6119:         }
rrenkert@6119:         selected = null;
rrenkert@6119:     }
raimund@282: }
raimund@282: // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :