123 lines
3.9 KiB
Java
Executable File
123 lines
3.9 KiB
Java
Executable File
package org.gcube.portlets.user.accountingdashboard.client.application.mainarea.filter.scopetree;
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import java.util.ArrayList;
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import java.util.logging.Logger;
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import org.gcube.portlets.user.accountingdashboard.client.application.event.RequestReportEvent;
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import org.gcube.portlets.user.accountingdashboard.client.application.event.RequestReportEvent.RequestReportEventHandler;
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import org.gcube.portlets.user.accountingdashboard.shared.data.ScopeData;
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import com.google.gwt.cell.client.AbstractCell;
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import com.google.gwt.cell.client.Cell;
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import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
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import com.google.gwt.view.client.ListDataProvider;
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import com.google.gwt.view.client.SelectionChangeEvent;
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import com.google.gwt.view.client.SingleSelectionModel;
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import com.google.gwt.view.client.TreeViewModel;
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/**
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*
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* @author Giancarlo Panichi
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*
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*/
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public class ScopeTreeModel implements TreeViewModel {
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private static Logger logger = Logger.getLogger("");
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private ListDataProvider<ScopeData> dataProvider;
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private final SingleSelectionModel<ScopeData> selectionModel = new SingleSelectionModel<>();
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public ScopeTreeModel(ListDataProvider<ScopeData> dataProvider, final RequestReportEventHandler handler) {
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this.dataProvider = dataProvider;
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selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() {
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@Override
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public void onSelectionChange(SelectionChangeEvent event) {
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@SuppressWarnings("rawtypes")
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SingleSelectionModel noSelectionModel = (SingleSelectionModel) event.getSource();
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ScopeData scopeDataSelected = (ScopeData) noSelectionModel.getSelectedObject();
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logger.fine("Selected: " + scopeDataSelected);
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RequestReportEvent requestEvent = new RequestReportEvent(scopeDataSelected);
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handler.onData(requestEvent);
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}
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});
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}
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public void setSelected(ScopeData item, boolean selected){
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selectionModel.setSelected(item, selected);
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}
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public boolean isSelected(ScopeData item){
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return selectionModel.isSelected(item);
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}
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@Override
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public <T> NodeInfo<?> getNodeInfo(T value) {
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if (value == null) {
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// LEVEL 0.
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// We passed null as the root value. Return the composers.
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// Create a data provider that contains the list of composers.
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// Create a cell to display a composer.
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Cell<ScopeData> cell = new AbstractCell<ScopeData>() {
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@Override
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public void render(Context context, ScopeData value, SafeHtmlBuilder sb) {
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if (value != null) {
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sb.appendEscaped(value.getName());
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}
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}
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};
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// Return a node info that pairs the data provider and the cell.
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return new DefaultNodeInfo<ScopeData>(dataProvider, cell, selectionModel, null);
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} else if (value instanceof ScopeData) {
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// LEVEL 1.
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// We want the children of the composer. Return the playlists.
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ListDataProvider<ScopeData> dataProvider = new ListDataProvider<ScopeData>(
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((ScopeData) value).getChildren());
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Cell<ScopeData> cell = new AbstractCell<ScopeData>() {
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@Override
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public void render(Context context, ScopeData value, SafeHtmlBuilder sb) {
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if (value != null) {
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sb.appendEscaped(value.getName());
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}
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}
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};
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return new DefaultNodeInfo<ScopeData>(dataProvider, cell, selectionModel, null);
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}
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/*
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* else if (value instanceof ScopeData) {
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*
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* // LEVEL 2 - LEAF. // We want the children of the playlist. Return
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* the songs. ListDataProvider<String> dataProvider = new
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* ListDataProvider<String>(((ScopeData) value).geSongs()); // Use the
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* shared selection model. return new
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* DefaultNodeInfo<String>(dataProvider, new TextCell(), selectionModel,
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* null); }
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*/
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return null;
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}
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@Override
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public boolean isLeaf(Object value) {
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// The leaf nodes are the songs, which are Strings.
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if (value != null && value instanceof ScopeData) {
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ArrayList<ScopeData> childrens = ((ScopeData) value).getChildren();
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if (childrens == null || childrens.isEmpty()) {
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return true;
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} else {
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return false;
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}
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}
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return false;
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}
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} |