Yahoo Json Services Sample (Smart GWT)
/*
* SmartGWT (GWT for SmartClient)
* Copyright 2008 and beyond, Isomorphic Software, Inc.
*
* SmartGWT is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License version 3
* as published by the Free Software Foundation. SmartGWT is also
* available under typical commercial license terms - see
* http://smartclient.com/license
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*/
package com.smartgwt.sample.showcase.client;
import com.google.gwt.core.client.EntryPoint;
import com.google.gwt.user.client.ui.RootPanel;
import com.smartgwt.client.data.DataSourceField;
import com.smartgwt.client.data.XJSONDataSource;
import com.smartgwt.client.data.fields.DataSourceImageField;
import com.smartgwt.client.data.fields.DataSourceIntegerField;
import com.smartgwt.client.data.fields.DataSourceLinkField;
import com.smartgwt.client.types.FieldType;
import com.smartgwt.client.widgets.Canvas;
import com.smartgwt.client.widgets.form.SearchForm;
import com.smartgwt.client.widgets.form.fields.ButtonItem;
import com.smartgwt.client.widgets.form.fields.TextItem;
import com.smartgwt.client.widgets.grid.ListGrid;
import com.smartgwt.client.widgets.form.fields.events.ClickEvent;
import com.smartgwt.client.widgets.form.fields.events.ClickHandler;
public class Showcase implements EntryPoint {
public void onModuleLoad() {
RootPanel.get().add(getViewPanel());
}
public Canvas getViewPanel() {
Canvas canvas = new Canvas();
Canvas yahooAttribution = new Canvas();
yahooAttribution.setHeight(31);
yahooAttribution.setContents("<a href='http://developer.yahoo.net/about'>"
+ "<img src='http://us.dev1.yimg.com/us.yimg.com/i/us/nt/bdg/websrv_88_1.gif' border='0'>"
+ "</a>");
canvas.addChild(yahooAttribution);
XJSONDataSource yahooDS = new XJSONDataSource();
yahooDS
.setDataURL("http://api.search.yahoo.com/ImageSearchService/V1/imageSearch?appid=YahooDemo&output=json");
yahooDS.setRecordXPath("/ResultSet/Result");
DataSourceImageField thumbnail = new DataSourceImageField("Thumbnail", "Thumbnail");
thumbnail.setWidth(150);
thumbnail.setImageHeight("imageHeight");
thumbnail.setImageWidth("imageWidth");
thumbnail.setValueXPath("Thumbnail/Url");
DataSourceIntegerField imageWidth = new DataSourceIntegerField("imageWidth");
imageWidth.setValueXPath("Thumbnail/Width");
imageWidth.setAttribute("hidden", true);
DataSourceIntegerField imageHeight = new DataSourceIntegerField("imageHeight");
imageHeight.setValueXPath("Thumbnail/Height");
imageHeight.setAttribute("hidden", true);
DataSourceField title = new DataSourceField("Title", FieldType.TEXT);
DataSourceField summary = new DataSourceField("Summary", FieldType.TEXT);
DataSourceLinkField fullImage = new DataSourceLinkField("link", "Full Image");
fullImage.setValueXPath("Url");
fullImage.setAttribute("target", "_blank");
yahooDS.addField(thumbnail);
yahooDS.addField(imageWidth);
yahooDS.addField(imageHeight);
yahooDS.addField(title);
yahooDS.addField(summary);
yahooDS.addField(fullImage);
final ListGrid grid = new ListGrid();
grid.setTop(120);
grid.setWidth100();
grid.setHeight(300);
grid.setWrapCells(true);
grid.setFixedRecordHeights(false);
grid.setShowAllRecords(true);
grid.setAlternateRecordStyles(true);
grid.setDataSource(yahooDS);
final SearchForm form = new SearchForm();
form.setTop(50);
form.setNumCols(3);
TextItem query = new TextItem();
query.setName("query");
query.setTitle("Query");
query.setDefaultValue("snowboarding");
ButtonItem button = new ButtonItem();
button.setTitle("Search");
button.setStartRow(false);
button.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
grid.fetchData(form.getValuesAsCriteria());
}
});
form.setItems(query, button);
canvas.addChild(form);
canvas.addChild(grid);
return canvas;
}
}
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