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- /*
- @ITMillApache2LicenseForJavaFiles@
- */
-
- 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.Sizeable;
- 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();
-
- 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.setHeight(100);
- params.setHeightUnits(Sizeable.UNITS_PERCENTAGE);
- panel2.setHeight(100);
- panel2.setHeightUnits(Sizeable.UNITS_PERCENTAGE);
- 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)
- */
- 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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