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package com.itmill.toolkit.demo;
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.*;
/**
* 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 Label context = new Label();
private Label relative = new Label();
private Table params = new Table();
public void init() {
Window main = new Window("Parameters demo");
setMainWindow(main);
// This class acts both as URI handler and parameter handler
main.addURIHandler(this);
main.addParameterHandler(this);
OrderedLayout layout = new OrderedLayout();
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 {
URL u1 = new URL(getURL(), "test/uri?test=1&test=2");
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 (Exception e) {
System.out.println("Couldn't get hostname for this machine: "
+ e.toString());
e.printStackTrace();
}
// URI
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);
// Parameters
params.addContainerProperty("Values", String.class, "");
Panel panel2 = new Panel("Parameter Handler");
params.setCaption("Last parameters");
params.setColumnHeaderMode(Table.COLUMN_HEADER_MODE_ID);
params.setRowHeaderMode(Table.ROW_HEADER_MODE_ID);
panel2.addComponent(params);
layout.addComponent(panel2);
main.addComponent(layout);
}
/**
* Update URI
*
* @see com.itmill.toolkit.terminal.URIHandler#handleURI(URL, String)
*/
public DownloadStream handleURI(URL context, String relativeUri) {
this.context.setValue(context.toString());
this.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) {
// TODO: disabled, see bug #550
// params.removeAllItems();
for (Iterator i = parameters.keySet().iterator(); i.hasNext();) {
String name = (String) i.next();
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[] { v }, name);
}
}
}
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