net.scran24.user.client.survey.FoodLookupList.java Source code

Introduction

Here is the source code for net.scran24.user.client.survey.FoodLookupList.java

Source

/*
This file is part of Intake24.
    
 Crown copyright, 2012, 2013, 2014.
    
This software is licensed under the Open Government Licence 3.0:
    
http://www.nationalarchives.gov.uk/doc/open-government-licence/
*/

package net.scran24.user.client.survey;

import java.util.ArrayList;
import java.util.List;

import net.scran24.user.shared.EncodedFood;

import com.google.gwt.cell.client.AbstractCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.safehtml.shared.SafeHtmlBuilder;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.cellview.client.CellList.Style;
import com.google.gwt.user.client.ui.FlowPanel;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SelectionChangeEvent.Handler;
import com.google.gwt.view.client.SingleSelectionModel;

public class FoodLookupList extends FlowPanel {
    public class EncodedFoodCell extends AbstractCell<EncodedFood> {
        @Override
        public void render(com.google.gwt.cell.client.Cell.Context context, EncodedFood value, SafeHtmlBuilder sb) {
            sb.appendHtmlConstant("<div class=\"scran24-food-lookup-cell\">");
            sb.appendEscaped(value.description());
            sb.appendHtmlConstant("</div>");
        }
    }

    interface R extends CellList.Resources {
        @Override
        @Source({ "net/scran24/user/client/survey/foodLookupList.css" })
        public Style cellListStyle();
    }

    interface SelectionHandler {
        void selectionChanged(EncodedFood selection);
    }

    public FoodLookupList(List<EncodedFood> choices, final SelectionHandler handler) {
        EncodedFoodCell cell = new EncodedFoodCell();

        List<EncodedFood> data = new ArrayList<EncodedFood>();

        CellList<EncodedFood> list = new CellList<EncodedFood>(cell, GWT.<R>create(R.class));
        list.setRowData(data);
        final SingleSelectionModel<EncodedFood> selectionModel = new SingleSelectionModel<EncodedFood>();
        selectionModel.addSelectionChangeHandler(new Handler() {
            @Override
            public void onSelectionChange(SelectionChangeEvent event) {
                handler.selectionChanged(selectionModel.getSelectedObject());
            }
        });
        list.setSelectionModel(selectionModel);

        add(list);
    }
}