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Java

/**
*
*/
package org.gcube.portlets.user.performfishanalytics.client.view;
import java.util.ArrayList;
import java.util.List;
import org.gcube.portlets.user.performfishanalytics.client.controllers.PerformFishAnalyticsController;
import org.gcube.portlets.user.performfishanalytics.client.event.SelectedKPIEvent;
import org.gcube.portlets.user.performfishanalytics.shared.KPI;
import org.gcube.portlets.user.performfishanalytics.shared.PopulationType;
import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.cell.client.Cell;
import com.google.gwt.cell.client.CheckboxCell;
import com.google.gwt.cell.client.CompositeCell;
import com.google.gwt.cell.client.FieldUpdater;
import com.google.gwt.cell.client.HasCell;
import com.google.gwt.core.shared.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.view.client.ListDataProvider;
import com.google.gwt.view.client.MultiSelectionModel;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.TreeViewModel;
/**
* The model that defines the nodes in the tree.
*/
public class Copy_2_of_CustomTreeModel implements TreeViewModel {
// private final List<PopulationType> kpis = new
// ArrayList<PopulationType>();
/**
* This selection model is shared across all leaf nodes. A selection model
* can also be shared across all nodes in the tree, or each set of child
* nodes can have its own instance. This gives you flexibility to determine
* how nodes are selected.
*/
private final MultiSelectionModel<KPI> multiSelectionModel =
new MultiSelectionModel<KPI>();
private ListDataProvider<PopulationType> rootProvider =
new ListDataProvider<PopulationType>();
private ListDataProvider<KPI> populationTypeProvider =
new ListDataProvider<KPI>();
private ListDataProvider<KPI> kpiProvider = new ListDataProvider<KPI>();
private Cell<KPI> kpiCell;
// private ListDataProvider<KPI> dataProvider = new ListDataProvider<KPI>();
public Copy_2_of_CustomTreeModel() {
init();
multiSelectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
public void onSelectionChange(SelectionChangeEvent event) {
GWT.log("Selected: " + multiSelectionModel.getSelectedSet());
}
});
}
public void init() {
// Construct a composite cell for contacts that includes a checkbox.
final List<HasCell<KPI, ?>> hasCells = new ArrayList<HasCell<KPI, ?>>();
hasCells.add(new HasCell<KPI, Boolean>() {
private CheckboxCell cell = new CheckboxCell(true, false);
public Cell<Boolean> getCell() {
return cell;
}
public FieldUpdater<KPI, Boolean> getFieldUpdater() {
return new FieldUpdater<KPI, Boolean>() {
@Override
public void update(int index, KPI object, Boolean value) {
// TODO Auto-generated method stub
GWT.log("Checked: "+object.getName() + " value: "+value);
PerformFishAnalyticsController.eventBus.fireEvent(new SelectedKPIEvent(null, object, value));
}
};
}
public Boolean getValue(KPI object) {
return multiSelectionModel.isSelected(object);
}
});
hasCells.add(new HasCell<KPI, KPI>() {
private KPICell cell = new KPICell(null);
public Cell<KPI> getCell() {
return cell;
}
public FieldUpdater<KPI, KPI> getFieldUpdater() {
return null;
}
public KPI getValue(KPI object) {
return object;
}
});
kpiCell = new CompositeCell<KPI>(hasCells) {
@Override
public void render(Context context, KPI value, SafeHtmlBuilder sb) {
sb.appendHtmlConstant("<table><tbody><tr>");
super.render(context, value, sb);
sb.appendHtmlConstant("</tr></tbody></table>");
/*if(value.isLeaf()){
sb.appendHtmlConstant("<table style=\"color:#0066cc;\"><tbody><tr>");
//hasCells.get(0).getCell().render(context, value.getClass(), sb);
//super.render(context, value, sb);
sb.appendHtmlConstant("</tr></tbody></table>");
}else{
sb.appendHtmlConstant("<table><tbody><tr>");
//sb.appendHtmlConstant(value.getName());
//superrender(context, value, sb);
sb.appendHtmlConstant("</tr></tbody></table>");
}*/
}
@Override
protected Element getContainerElement(Element parent) {
// Return the first TR element in the table.
return parent.getFirstChildElement().getFirstChildElement().getFirstChildElement();
}
@Override
protected <X> void render(
Context context, KPI value, SafeHtmlBuilder sb,
HasCell<KPI, X> hasCell) {
Cell<X> cell = hasCell.getCell();
sb.appendHtmlConstant("<td>");
cell.render(context, hasCell.getValue(value), sb);
sb.appendHtmlConstant("</td>");
}
};
}
public void setNewPopulationType(PopulationType populationType) {
GWT.log("Displayng KPI for: " + populationType.toString());
// dataProvider.getList().clear();
// dataProvider.setList(list);
// dataProvider.refresh();
if (this.populationTypeProvider != null) {
// this.kpis.clear();
this.populationTypeProvider.getList().clear();
this.populationTypeProvider.getList().addAll(
populationType.getListKPI());
}
// fillFirstRootLevel(populationType.getListKPI());
//
// this.getNodeInfo(populationType);
}
// private void fillFirstRootLevel(List<KPI> listKPI){
// kpis.clear();
// PopulationType rootKPI = new PopulationType("", "KPIs","","",null);
// rootKPI.setListKPI(rootKPI.getListKPI());
// kpis.add(rootKPI);
// //rootProvider.refresh();
// }
/**
* Get the {@link NodeInfo} that provides the children of the specified
* value.
*/
public <T> NodeInfo<?> getNodeInfo(T value) {
GWT.log("Get Node Info fired: " + value);
if (value == null) {
// LEVEL 0.
// We passed null as the root value. Return the composers.
// Create a data provider that contains the list of composers.
// PopulationType root = fillFirstRootLevel(null);
// Create a cell to display a composer.
PopulationType rootKPI =
new PopulationType("", "KPIs", "", "", null);
rootKPI.setListKPI(rootKPI.getListKPI());
rootProvider.getList().add(rootKPI);
Cell<PopulationType> cell = new AbstractCell<PopulationType>() {
@Override
public void render(
com.google.gwt.cell.client.Cell.Context context,
PopulationType value, SafeHtmlBuilder sb) {
GWT.log("Rendering Root: " + value + " KPIs: " +
value.getListKPI());
// sb.appendHtmlConstant(" ROOT ");
sb.appendEscaped(value.getName());
}
};
// Return a node info that pairs the data provider and the cell.
return new DefaultNodeInfo<PopulationType>(rootProvider, cell);
}
else if (value instanceof PopulationType) {
// LEVEL 1.
// We want the children of PopulationType. Getting its list of KPI.
// List<KPI> listOfKpi = ((PopulationType) value).getListKPI();
GWT.log("PopulationType listOfKpi: " + populationTypeProvider.getList());
// populationTypeProvider = new ListDataProvider<KPI>(listOfKpi);
// Cell<KPI> cell = new AbstractCell<KPI>() {
//
// @Override
// public void render(
// com.google.gwt.cell.client.Cell.Context context, KPI value,
// SafeHtmlBuilder sb) {
//
// GWT.log("Rendering PopulationType: " + value);
// if (value != null) {
// sb.appendHtmlConstant(" ");
// sb.appendEscaped(value.getName());
// }
// }
// };
return new DefaultNodeInfo<KPI>(populationTypeProvider, kpiCell);
}
else if (value instanceof KPI) {
// LEVEL 2 - LEAF.
// We want the children of the KPI. Return them.
List<KPI> listOfKpi = ((KPI) value).getListKPI();
if (listOfKpi != null) {
GWT.log("KPI type listOfKpi: " + listOfKpi.toString());
kpiProvider = new ListDataProvider<KPI>(((KPI) value).getListKPI());
// Cell<KPI> cell = new AbstractCell<KPI>() {
//
// @Override
// public void render(
// com.google.gwt.cell.client.Cell.Context context,
// KPI value, SafeHtmlBuilder sb) {
//
// GWT.log("Rendering KPI: " + value);
// if (value != null) {
// sb.appendHtmlConstant(" ---- ");
// sb.appendEscaped(value.getName());
// }
// }
// };
return new DefaultNodeInfo<KPI>(
kpiProvider, kpiCell, multiSelectionModel, null);
}
}
return null;
}
/**
* Check if the specified value represents a leaf node. Leaf nodes cannot be
* opened.
*/
public boolean isLeaf(Object value) {
// The leaf nodes are the songs, which are Strings.
if (value instanceof KPI) {
KPI toKPI = (KPI) value;
return toKPI.isLeaf();
}
return false;
}
}