GridCellWidgetsSample.java

package com.smartgwt.sample.showcase.client.grid;

import com.smartgwt.client.types.Alignment;
import com.smartgwt.client.types.ListGridFieldType;
import com.smartgwt.client.util.SC;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.IButton;
import com.smartgwt.client.widgets.ImgButton;
import com.smartgwt.client.widgets.events.ClickEvent;
import com.smartgwt.client.widgets.events.ClickHandler;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.grid.ListGridField;
import com.smartgwt.client.widgets.grid.ListGridRecord;
import com.smartgwt.client.widgets.layout.HLayout;
import com.smartgwt.sample.showcase.client.PanelFactory;
import com.smartgwt.sample.showcase.client.ShowcasePanel;
import com.smartgwt.sample.showcase.client.data.CountryData;

public class GridCellWidgetsSample extends ShowcasePanel {
    private static final String DESCRIPTION = "<p>This example illustrates embedding arbitrary widgets in ListGrid cells. Notice how reordering the column with widgets " +
            "works as any other column. Smart GWT uses widget pooling to maximize efficiency however for better performance consider using one or more fields of type ListGridFieldType.ICON</p>."; 


    public static class Factory implements PanelFactory {
        private String id;

        public Canvas create() {
            GridCellWidgetsSample panel = new GridCellWidgetsSample();
            id = panel.getID();
            return panel;
        }

        public String getID() {
            return id;
        }

        public String getDescription() {
            return DESCRIPTION;
        }
    }

    public Canvas getViewPanel() {

        final ListGrid countryGrid = new ListGrid() {
            @Override
            protected Canvas createRecordComponent(final ListGridRecord record, Integer colNum) {

                String fieldName = this.getFieldName(colNum);

                if (fieldName.equals("iconField")) {
                    HLayout recordCanvas = new HLayout(3);
                    recordCanvas.setHeight(22);
                    recordCanvas.setAlign(Alignment.CENTER);
                    ImgButton editImg = new ImgButton();
                    editImg.setShowDown(false);
                    editImg.setShowRollOver(false);
                    editImg.setLayoutAlign(Alignment.CENTER);
                    editImg.setSrc("silk/comment_edit.png");
                    editImg.setPrompt("Edit Comments");
                    editImg.setHeight(16);
                    editImg.setWidth(16);
                    editImg.addClickHandler(new ClickHandler() {
                        public void onClick(ClickEvent event) {
                            SC.say("Edit Comment Icon Clicked for country : " + record.getAttribute("countryName"));
                        }
                    });

                    ImgButton chartImg = new ImgButton();
                    chartImg.setShowDown(false);
                    chartImg.setShowRollOver(false);
                    chartImg.setAlign(Alignment.CENTER);
                    chartImg.setSrc("silk/chart_bar.png");
                    chartImg.setPrompt("View Chart");
                    chartImg.setHeight(16);
                    chartImg.setWidth(16);
                    chartImg.addClickHandler(new ClickHandler() {
                        public void onClick(ClickEvent event) {
                            SC.say("Chart Icon Clicked for country : " + record.getAttribute("countryName"));
                        }
                    });

                    recordCanvas.addMember(editImg);
                    recordCanvas.addMember(chartImg);
                    return recordCanvas;
                } else if (fieldName.equals("buttonField")) {
                    IButton button = new IButton();
                    button.setHeight(18);
                    button.setWidth(65);                    
                    button.setIcon("flags/16/" + record.getAttribute("countryCode") + ".png");
                    button.setTitle("Info");
                    button.addClickHandler(new ClickHandler() {
                        public void onClick(ClickEvent event) {
                            SC.say(record.getAttribute("countryName") + " info button clicked.");
                        }
                    });
                    return button;
                } else {
                    return null;
                }

            }
        };
        countryGrid.setShowRecordComponents(true);        
        countryGrid.setShowRecordComponentsByCell(true);
        countryGrid.setCanRemoveRecords(true);

        countryGrid.setWidth(550);
        countryGrid.setHeight(224);
        countryGrid.setShowAllRecords(true);

        ListGridField countryCodeField = new ListGridField("countryCode", "Flag", 40);
        countryCodeField.setAlign(Alignment.CENTER);
        countryCodeField.setType(ListGridFieldType.IMAGE);
        countryCodeField.setImageURLPrefix("flags/16/");
        countryCodeField.setImageURLSuffix(".png");

        ListGridField nameField = new ListGridField("countryName", "Country");
        ListGridField capitalField = new ListGridField("capital", "Capital");
        ListGridField continentField = new ListGridField("continent", "Continent");

        ListGridField buttonField = new ListGridField("buttonField", "Info");
        buttonField.setAlign(Alignment.CENTER);
        
        ListGridField iconField = new ListGridField("iconField", "Comments/Stats");
        iconField.setWidth(100);

        countryGrid.setFields(countryCodeField, nameField, capitalField, continentField, buttonField, iconField);
        countryGrid.setCanResizeFields(true);
        countryGrid.setData(CountryData.getRecords());

        return countryGrid;
    }

    public String getIntro() {
        return DESCRIPTION;
    }
}