package com.itmill.toolkit.tests;

import com.itmill.toolkit.ui.*;
import com.itmill.toolkit.ui.Button.ClickEvent;
import com.itmill.toolkit.ui.Button.ClickListener;

public class TestSetVisibleAndCaching extends com.itmill.toolkit.Application {

	Panel panelA = new Panel("Panel A");
	Panel panelB = new Panel("Panel B");
	Panel panelC = new Panel("Panel C");

	Button buttonNextPanel = new Button("Show next panel");

	int selectedPanel = 0;

	public void init() {
		Window mainWindow = new Window("TestSetVisibleAndCaching");
		setMainWindow(mainWindow);

		panelA.addComponent(new Label(
				"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"));
		panelB.addComponent(new Label(
				"BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB"));
		panelC.addComponent(new Label(
				"CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC"));

		mainWindow.addComponent(new Label(
				"Inspect transfered data from server to "
						+ "client and see how widgets are re-used,"
						+ " after each panel is once shown in GUI then"
						+ " their contents are not resend."));
		mainWindow.addComponent(buttonNextPanel);
		mainWindow.addComponent(panelA);
		mainWindow.addComponent(panelB);
		mainWindow.addComponent(panelC);

		selectPanel(selectedPanel);

		buttonNextPanel.addListener(new ClickListener() {
			public void buttonClick(ClickEvent event) {
				selectedPanel++;
				if (selectedPanel > 2)
					selectedPanel = 0;
				selectPanel(selectedPanel);
			}
		});

	}

	private void selectPanel(int selectedPanel) {
		System.err.println("Selecting panel " + selectedPanel);
		switch (selectedPanel) {
		case 0:
			panelA.setVisible(true);
			panelB.setVisible(false);
			panelC.setVisible(false);
			break;
		case 1:
			panelA.setVisible(false);
			panelB.setVisible(true);
			panelC.setVisible(false);
			break;
		case 2:
			panelA.setVisible(false);
			panelB.setVisible(false);
			panelC.setVisible(true);
			break;
		}
	}
}

Test that caching widgets works. Inspect transfered data from server to client and see how widgets are re-used after each panel is once shown in GUI then" their contents are not resend.