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/*
@ITMillApache2LicenseForJavaFiles@
*/
package com.itmill.toolkit.tests;
import java.net.URL;
import java.util.Iterator;
import java.util.Map;
import com.itmill.toolkit.terminal.DownloadStream;
import com.itmill.toolkit.terminal.ExternalResource;
import com.itmill.toolkit.terminal.ParameterHandler;
import com.itmill.toolkit.terminal.URIHandler;
import com.itmill.toolkit.ui.ExpandLayout;
import com.itmill.toolkit.ui.Label;
import com.itmill.toolkit.ui.Link;
import com.itmill.toolkit.ui.Panel;
import com.itmill.toolkit.ui.Table;
import com.itmill.toolkit.ui.Window;
/**
* This is a demonstration of how URL parameters can be recieved and handled.
* Parameters and URL:s can be received trough the windows by registering
* URIHandler and ParameterHandler classes window.
*
* @since 3.1.1
*/
public class Parameters extends com.itmill.toolkit.Application implements
URIHandler, ParameterHandler {
private final Label context = new Label();
private final Label relative = new Label();
private final Table params = new Table();
@Override
@SuppressWarnings("deprecation")
public void init() {
final Window main = new Window("Parameters demo");
setMainWindow(main);
// This class acts both as URI handler and parameter handler
main.addURIHandler(this);
main.addParameterHandler(this);
final ExpandLayout layout = new ExpandLayout();
final Label info = new Label("To test URI and Parameter Handlers, "
+ "add get parameters to URL. For example try examples below: ");
info.setCaption("Usage info");
layout.addComponent(info);
try {
final URL u1 = new URL(getURL(), "test/uri?test=1&test=2");
final URL u2 = new URL(getURL(), "foo/bar?mary=john&count=3");
layout.addComponent(new Link(u1.toString(),
new ExternalResource(u1)));
layout.addComponent(new Label("Or this: "));
layout.addComponent(new Link(u2.toString(),
new ExternalResource(u2)));
} catch (final Exception e) {
System.out.println("Couldn't get hostname for this machine: "
+ e.toString());
e.printStackTrace();
}
// URI
final Panel panel1 = new Panel("URI Handler");
context.setCaption("Last URI handler context");
panel1.addComponent(context);
relative.setCaption("Last relative URI");
panel1.addComponent(relative);
layout.addComponent(panel1);
params.addContainerProperty("Key", String.class, "");
params.addContainerProperty("Value", String.class, "");
final Panel panel2 = new Panel("Parameter Handler");
params.setSizeFull();
panel2.setLayout(new ExpandLayout());
panel2.getLayout().setMargin(true);
params.setColumnHeaderMode(Table.COLUMN_HEADER_MODE_ID);
panel2.addComponent(params);
layout.addComponent(panel2);
// expand parameter panel and its table
layout.expand(panel2);
layout.setMargin(true);
layout.setSpacing(true);
main.setLayout(layout);
}
/**
* Update URI
*
* @see com.itmill.toolkit.terminal.URIHandler#handleURI(URL, String)
*/
@Override
public DownloadStream handleURI(URL context, String relativeUri) {
this.context.setValue(context.toString());
relative.setValue(relativeUri);
return null;
}
/**
* Handles GET parameters, in this demo GET parameteres are used to
* communicate with EmbeddedToolkit.jsp
*/
public void handleParameters(Map parameters) {
params.removeAllItems();
for (final Iterator i = parameters.keySet().iterator(); i.hasNext();) {
final String name = (String) i.next();
final String[] values = (String[]) parameters.get(name);
String v = "";
for (int j = 0; j < values.length; j++) {
if (v.length() > 0) {
v += ", ";
}
v += "'" + values[j] + "'";
}
params.addItem(new Object[] { name, v }, name);
}
}
}
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