/**
 * This is the fourth application used in the Java-GNOME tutorial.
 * It demonstrates the use of layout managers.
 */

import org.gnu.gnome.App;
import org.gnu.gnome.Program;
import org.gnu.gnome.UIInfo;
import org.gnu.gtk.AboutDialog;
import org.gnu.gtk.Adjustment;
import org.gnu.gtk.AttachOptions;
import org.gnu.gtk.ButtonsType;
import org.gnu.gtk.CheckButton;
import org.gnu.gtk.ComboBox;
import org.gnu.gtk.DialogFlags;
import org.gnu.gtk.Gtk;
import org.gnu.gtk.GtkStockItem;
import org.gnu.gtk.HBox;
import org.gnu.gtk.HScale;
import org.gnu.gtk.HScrollBar;
import org.gnu.gtk.Label;
import org.gnu.gtk.MessageDialog;
import org.gnu.gtk.MessageType;
import org.gnu.gtk.Notebook;
import org.gnu.gtk.PositionType;
import org.gnu.gtk.Scale;
import org.gnu.gtk.StatusBar;
import org.gnu.gtk.Table;
import org.gnu.gtk.UpdateType;
import org.gnu.gtk.VBox;
import org.gnu.gtk.VScale;
import org.gnu.gtk.Widget;
import org.gnu.gtk.event.AdjustmentEvent;
import org.gnu.gtk.event.AdjustmentListener;
import org.gnu.gtk.event.ButtonEvent;
import org.gnu.gtk.event.ButtonListener;
import org.gnu.gtk.event.ComboBoxEvent;
import org.gnu.gtk.event.ComboBoxListener;
import org.gnu.gtk.event.LifeCycleEvent;
import org.gnu.gtk.event.LifeCycleListener;
import org.gnu.gtk.event.MenuItemEvent;
import org.gnu.gtk.event.MenuItemListener;

public class Fourth implements MenuItemListener, ButtonListener {
	private App app = null;
	private StatusBar statusbar = null;

	// widgets used for the boxes tab
	private VScale vscale = null;
	private HScale hscale = null;
	private CheckButton button = null;
	private Adjustment adj = null;
	private ComboBox valuePosition = null;
	private ComboBox updatePolicy = null;

	// widgets used for the table tab
	private VScale vscale2 = null;
	private HScale hscale2 = null;
	private CheckButton button2 = null;
	private Adjustment adj2 = null;
	private ComboBox valuePosition2 = null;
	private ComboBox updatePolicy2 = null;

	public static final String appVersion = "0.1";

	public Fourth() {
		createMainWindow();
		createMenusAndStatusbar();
		createToolbar();
		createView();
		app.showAll();
	}

	private void createMainWindow() {
		app = new App("Fourth", "Fourth App");
		app.addListener(new LifeCycleListener() {
			public void lifeCycleEvent(LifeCycleEvent event) {}
			public boolean lifeCycleQuery(LifeCycleEvent event) {
				Gtk.mainQuit();
				return false;
			}
		});
	}

	private void createMenusAndStatusbar() {

		UIInfo fileMenu[] = {
			UIInfo.newItem("New Window", "Open a new application window", this),
			UIInfo.separator(),
			UIInfo.openItem((MenuItemListener) this),
			UIInfo.saveItem((MenuItemListener) this),
			UIInfo.saveAsItem((MenuItemListener) this),
			UIInfo.separator(),
			UIInfo.closeItem((MenuItemListener) this),
			UIInfo.quitItem(new MenuItemListener() { 
				public void menuItemEvent(MenuItemEvent event) { 
					fileExit();
				}
			}), 
			UIInfo.end()
		};

		UIInfo editMenu[] = {
			UIInfo.undoItem((MenuItemListener) this),
			UIInfo.redoItem((MenuItemListener) this),
			UIInfo.separator(),
			UIInfo.cutItem((MenuItemListener) this),
			UIInfo.copyItem((MenuItemListener) this),
			UIInfo.pasteItem((MenuItemListener) this),
			UIInfo.separator(),
			UIInfo.findItem((MenuItemListener) this),
			UIInfo.findAgainItem((MenuItemListener) this),
			UIInfo.replaceItem((MenuItemListener) this),
			UIInfo.propertiesItem((MenuItemListener) this),
			UIInfo.end()
		};

		UIInfo moveMenu[] = {
			UIInfo.item("_Up", "Move selection up", (MenuItemListener) this),
			UIInfo.item("D_own", "Move selection down", (MenuItemListener) this),
			UIInfo.end()
		};

		UIInfo helpMenu[] = {
			UIInfo.help("second"),
			UIInfo.aboutItem(new MenuItemListener() { 
				public void menuItemEvent(MenuItemEvent event) { 
					helpAbout();
				}
			}), 
			UIInfo.end()
		};

		UIInfo mainMenu[] = {
			UIInfo.subtree("_File", fileMenu),
			UIInfo.subtree("_Edit", editMenu),
			UIInfo.subtree("_Move", moveMenu),
			UIInfo.subtree("_Help", helpMenu),
			UIInfo.end()
		};
		app.createMenus(mainMenu);

		statusbar = new StatusBar();
		app.setStatusBar(statusbar);
		app.installMenuHints(mainMenu);
	}

	private void createToolbar() {

	UIInfo toolbar[] = {
			UIInfo.itemStock("New", "Create a new file", 
					(ButtonListener) this, GtkStockItem.NEW),
			UIInfo.itemStock("Open", "Open a file", 
					(ButtonListener) this, GtkStockItem.OPEN),
			UIInfo.separator(),
			UIInfo.itemStock("Save", "Save this file", 
					(ButtonListener) this, GtkStockItem.SAVE),
			UIInfo.itemStock("Save As", "Save this file as", 
					(ButtonListener) this, GtkStockItem.SAVE_AS),
			UIInfo.separator(),
			UIInfo.itemStock("Close", "Close this file", 
					(ButtonListener) this, GtkStockItem.CLOSE),
			UIInfo.end()
		};

		app.createToolBar(toolbar);
	}

	private void createView() {
		// Create a notebook to hold our two example pages
		Notebook notebook = new Notebook();
		notebook.setTabPosition(PositionType.TOP);
		app.setContent(notebook);

		notebook.appendPage(buildBoxPage(), new Label("GtkBox"));
		notebook.appendPage(buildTablePage(), new Label("GtkTable"));
	}

	private Widget buildBoxPage() {

		VBox mainBox = new VBox(false, 0);

		HBox hbox = new HBox(false, 10);
		hbox.setBorderWidth(10);
		mainBox.packStart(hbox, true, true, 0);

		Adjustment adj1 = new Adjustment(0.0, 0.0, 101.0, 0.1, 1.0, 1.0);
		vscale = new VScale(adj1);
		setDefaultValues(vscale);
		hbox.packStart(vscale, true, true, 0);

		VBox vbox = new VBox(false, 10);
		hbox.packStart(vbox, true, true, 0);

		hscale = new HScale(adj1);
		hscale.setMinimumSize(200, 30);
		setDefaultValues(hscale);
		vbox.packStart(hscale, true, true, 0);

		HScrollBar scrollbar = new HScrollBar(adj1);
		scrollbar.setUpdatePolicy(UpdateType.CONTINUOUS);
		vbox.packStart(scrollbar, true, true, 0);

		hbox = new HBox(false, 10);
		hbox.setBorderWidth(10);
		mainBox.packStart(hbox, true, true, 0);

		button = new CheckButton("Display value on scale widgets", false);
		button.setState(true);
		button.addListener(new ButtonListener() {
			public void buttonEvent(ButtonEvent event) {
				if (event.isOfType(ButtonEvent.Type.CLICK))
					drawValue();
			}
		});
		hbox.packStart(button, true, true, 0);

		hbox = new HBox(false, 10);
		hbox.setBorderWidth(10);

		Label label = new Label("Scale Value Position:");
		hbox.packStart(label, false, false, 0);

		valuePosition = new ComboBox();
		valuePosition.appendText("Top");
		valuePosition.appendText("Bottom");
		valuePosition.appendText("Left");
		valuePosition.appendText("Right");
		valuePosition.addListener(new ComboBoxListener() {
			public void comboBoxEvent(ComboBoxEvent event) {
				int index = valuePosition.getActive();
				if (0 == index)
					posMenuSelect(PositionType.TOP);
				else if (1 == index)
					posMenuSelect(PositionType.BOTTOM);
				else if (2 == index)
					posMenuSelect(PositionType.LEFT);
				else
					posMenuSelect(PositionType.RIGHT);
			}
		});
		hbox.packStart(valuePosition, true, true, 0);

		mainBox.packStart(hbox, true, true, 0);

		hbox = new HBox(false, 10);
		hbox.setBorderWidth(10);

		label = new Label("Scale Update Policy:");
		hbox.packStart(label, false, false, 0);

		updatePolicy = new ComboBox();
		updatePolicy.appendText("Continuous");
		updatePolicy.appendText("Discontinuous");
		updatePolicy.appendText("Delayed");
		updatePolicy.addListener(new ComboBoxListener() {
			public void comboBoxEvent(ComboBoxEvent event) {
				int index = updatePolicy.getActive();
				if (0 == index)
					updateMenuSelect(UpdateType.CONTINUOUS);
				else if (1 == index)
					updateMenuSelect(UpdateType.DISCONTINUOUS);
				else 
					updateMenuSelect(UpdateType.DELAYED);
			}
		});
		hbox.packStart(updatePolicy, true, true, 0);

		mainBox.packStart(hbox, true, true, 0);

		hbox = new HBox(false, 10);
		hbox.setBorderWidth(10);

		label = new Label("Scale Digits:");
		hbox.packStart(label, false, false, 0);

		adj = new Adjustment(1.0, 0.0, 5.0, 1.0, 1.0, 0.0);
		adj.addListener(new AdjustmentListener() {
			public void adjustmentEvent(AdjustmentEvent event) {
				digitsScale();
			}
		});
		HScale scale = new HScale(adj);
		scale.setDigits(0);
		hbox.packStart(scale, true, true, 0);

		mainBox.packStart(hbox, true, true, 0);

		return mainBox;
	}

	private Widget buildTablePage() {

		Table table = new Table(6, 3, false);

		Adjustment adj1 = new Adjustment(0.0, 0.0, 101.0, 0.1, 1.0, 1.0);
		vscale2 = new VScale(adj1);
		setDefaultValues(vscale2);
		table.attach(vscale2, 0, 1, 0, 2, AttachOptions.FILL, AttachOptions.FILL, 2, 10);

		hscale2 = new HScale(adj1);
		hscale2.setMinimumSize(200, 30);
		setDefaultValues(hscale2);
		table.attach(hscale2, 1, 3, 0, 1, AttachOptions.FILL, AttachOptions.FILL, 5, 5);

		HScrollBar scrollbar = new HScrollBar(adj1);
		scrollbar.setUpdatePolicy(UpdateType.CONTINUOUS);
		table.attach(scrollbar, 1, 3, 1, 2, AttachOptions.FILL, AttachOptions.FILL, 5, 5);

		button2 = new CheckButton("Display value on scale widgets", false);
		button2.setState(true);
		table.attach(button2, 0, 3, 2, 3, AttachOptions.FILL, AttachOptions.FILL, 5, 10);

		Label label = new Label("Scale Value Position:");
		table.attach(label, 0, 2, 3, 4, AttachOptions.FILL, AttachOptions.FILL, 2, 10);

		valuePosition2 = new ComboBox();
		valuePosition2.appendText("Top");
		valuePosition2.appendText("Bottom");
		valuePosition2.appendText("Left");
		valuePosition2.appendText("Right");
		valuePosition2.addListener(new ComboBoxListener() {
			public void comboBoxEvent(ComboBoxEvent event) {
				int index = valuePosition2.getActive();
				if (0 == index)
					posMenuSelect(PositionType.TOP);
				else if (1 == index)
					posMenuSelect(PositionType.BOTTOM);
				else if (2 == index)
					posMenuSelect(PositionType.LEFT);
				else
					posMenuSelect(PositionType.RIGHT);
			}
		});
		table.attach(valuePosition2, 2, 3, 3, 4, AttachOptions.FILL, AttachOptions.FILL, 2, 10);

		label = new Label("Scale Update Policy:");
		table.attach(label, 0, 2, 4, 5, AttachOptions.FILL, AttachOptions.FILL, 2, 10);

		updatePolicy2 = new ComboBox();
		updatePolicy2.appendText("Continuous");
		updatePolicy2.appendText("Discontinuous");
		updatePolicy2.appendText("Delayed");
		updatePolicy2.addListener(new ComboBoxListener() {
			public void comboBoxEvent(ComboBoxEvent event) {
				int index = updatePolicy2.getActive();
				if (0 == index)
					updateMenuSelect(UpdateType.CONTINUOUS);
				else if (1 == index)
					updateMenuSelect(UpdateType.DISCONTINUOUS);
				else 
					updateMenuSelect(UpdateType.DELAYED);
			}
		});
		table.attach(updatePolicy2, 2, 3, 4, 5, AttachOptions.FILL, AttachOptions.FILL, 2, 10);

		label = new Label("Scale Digits:");
		table.attach(label, 0, 1, 5, 6, AttachOptions.FILL, AttachOptions.FILL, 2, 5);

		adj2 = new Adjustment(1.0, 0.0, 5.0, 1.0, 1.0, 0.0);
		HScale scale = new HScale(adj2);
		scale.setDigits(0);
		table.attach(scale, 1, 3, 5, 6, AttachOptions.FILL, AttachOptions.FILL, 3, 5);
		return table;
	}

	public void setDefaultValues(Scale scale) {
		scale.setUpdatePolicy(UpdateType.CONTINUOUS);
		scale.setDigits(1);
		scale.setValuePosition(PositionType.TOP);
		scale.setDrawValue(true);
	}

	public void drawValue() {
		hscale.setDrawValue(button.getState());
		vscale.setDrawValue(button.getState());
	}

	public void posMenuSelect(PositionType type) {
		hscale.setValuePosition(type);
		vscale.setValuePosition(type);
	}

	public void updateMenuSelect(UpdateType type) {
		hscale.setUpdatePolicy(type);
		vscale.setUpdatePolicy(type);
	}

	public void digitsScale() {
		hscale.setDigits((int) adj.getValue());
		vscale.setDigits((int) adj.getValue());
	}

	public void helpAbout() {
	    String appname = "Java-GNOME Tutorial";
	    String version = "0.1";
	    String license = "GPL";
	    String description = "Java-GNOME Tutorial.";
	    String authors[] = { 
	        "http://java-gnome.sf.net", 
	        "http://www.gtk.org" 
	    };
	    String documentors[] = { 
	        "<java-gnome-developer@lists.sf.net>", 
	        "http://www.gnome.org"
	    };
	    String translators = "Language Guys Inc.";
	    String website = "http://java-gnome.sf.net";

	    AboutDialog about = new AboutDialog();
        about.setName(appname);
        about.setVersion(version);
        about.setLicense(license);
        about.setComments(description);
        about.setAuthors(authors);
        about.setDocumenters(documentors);
        about.setTranslatorCredits(translators);
        about.setWebsite(website);
		about.show();
	}

	public void fileExit() {
		Gtk.mainQuit();
	}

	public void menuItemEvent(MenuItemEvent event) {
		displayMessage();
	}

	public void buttonEvent(ButtonEvent event) {
		displayMessage();
	}
	
	private void displayMessage() {
		MessageDialog dialog = new MessageDialog(app, DialogFlags.MODAL, 
				MessageType.INFO, ButtonsType.OK,
				"Not implemented", false);
		dialog.run();
		dialog.destroy();
	}

	public static void main(String[] args) {
		Program.initGnomeUI("Fourth", Fourth.appVersion, args);
		new Fourth();
		Gtk.main();
	}
}