getlocalepanel.java

具有不同语法高亮的编辑器实例

package org.fife.rtext.plugins.rtextl10ngen;

import java.awt.*;
import java.text.MessageFormat;
import java.util.Arrays;
import java.util.Locale;
import java.util.ResourceBundle;
import javax.swing.*;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;

import org.fife.RListSelectionModel;
import org.fife.ui.RScrollPane;
import org.fife.ui.app.WizardPluginDialog;
import org.fife.ui.app.WizardDialogInfoPanel;


/**
 * Allows the user to select a locale.
 *
 * @author Robert Futrell
 * @version 1.0
 */
class GetLocalePanel extends WizardDialogInfoPanel
									implements ListSelectionListener {

	private DefaultListModel listModel;
	private JList localeList;
	private JLabel codeLabel;
	private ResourceBundle msg;


/*****************************************************************************/


	/**
	 * Constructor.
	 *
	 * @param msg The plugin's resource bundle.
	 */
	public GetLocalePanel(ResourceBundle msg) {

		super(msg.getString("Plugin.Wizard.Create.Locale.Header"));
		this.msg = msg;

		setLayout(new BorderLayout());

		JPanel contentPane = new JPanel();
		contentPane.setLayout(new BoxLayout(contentPane, BoxLayout.Y_AXIS));
		JPanel temp = new JPanel(new BorderLayout());
		String desc = msg.getString("Plugin.Wizard.Create.Locale.Desc");
		temp.add(new JLabel(desc));//, BorderLayout.WEST);
		contentPane.add(temp);
		contentPane.add(Box.createVerticalStrut(10));
		temp = new JPanel(new BorderLayout());
		listModel = createListModel();
		localeList = new JList(listModel);
		localeList.setSelectionModel(new RListSelectionModel());
		localeList.addListSelectionListener(this);
		localeList.setVisibleRowCount(15);
		temp.add(new RScrollPane(localeList), BorderLayout.WEST);
		codeLabel = new JLabel("xxxx", JLabel.CENTER);
		temp.add(codeLabel);
		contentPane.add(temp);

		add(contentPane, BorderLayout.NORTH);

		localeList.setSelectedIndex(0);	// Do after codeLabel is added.

	}


/*****************************************************************************/


	/**
	 * Returns the list model containing available locales.
	 *
	 * @return The list model.
	 */
	protected DefaultListModel createListModel() {

		// Create a sorted (by display name) list of Locale-supported locales.
		Locale[] locales = Locale.getAvailableLocales();
		SortableLocale[] sl = new SortableLocale[locales.length];
		for (int i=0; i<locales.length; i++) {
			sl[i] = new SortableLocale(locales[i]);
		}
		Arrays.sort(sl);

		// If we are running in a JDK or an international JRE, we get many
		// more locales, such as Japanese and Chinese ones.  If, however,
		// we're running in a non-international JRE, we do NOT get many
		// locales.  We'll check for Japanese and Chinese locales and add
		// them in manually if they aren't there.
		sl = ensureLocaleAvailable(sl, Locale.SIMPLIFIED_CHINESE);
		sl = ensureLocaleAvailable(sl, Locale.TRADITIONAL_CHINESE);
		sl = ensureLocaleAvailable(sl, Locale.JAPAN);
		sl = ensureLocaleAvailable(sl, Locale.JAPANESE);
		sl = ensureLocaleAvailable(sl, Locale.KOREAN);

		// Add all locales to the JList model and return it.
		DefaultListModel model = new DefaultListModel();
		for (int i=0; i<locales.length; i++) {
			model.addElement(sl[i]);
		}
		return model;
	}


/*****************************************************************************/


	/**
	 * Checks whether or not the specified locale is in the specified array.
	 * If it isn't, it is added in the proper location.
	 *
	 * @param sl The array of sorted locales.
	 * @param l The locale to check for.
	 * @return The (possibly enlarged) sorted locale array.
	 */
	protected SortableLocale[] ensureLocaleAvailable(SortableLocale[] sl, Locale l) {
		SortableLocale temp = new SortableLocale(l);
		int index = Arrays.binarySearch(sl, temp);
		if (index<-1) {
			index = -(index+1);
			SortableLocale[] sl2 = new SortableLocale[sl.length+1];
			for (int i=0; i<index; i++)
				sl2[i] = sl[i];
			sl2[index] = temp;
			for (int i=index; i<sl.length; i++)
				sl2[i+1] = sl[i];
			sl = sl2;
		}
		else {
			System.out.println("Locale already available: " + l.getDisplayName());
		}
		return sl;
	}


/*****************************************************************************/


	/**
	 * Returns the locale specified by the user to use for the playpen.
	 *
	 * @return The locale.
	 */
	public Locale getSelectedLocale() {
		return ((SortableLocale)localeList.getSelectedValue()).getLocale();
	}


/*****************************************************************************/


	/**
	 * Saves input from the user.  This method is called when the user clicks
	 * the "Next" button after giving any input needed for this panel.  The
	 * panel should use the <code>setWizarProperty</code> method of the
	 * wizard dialog to save entered data.
	 *
	 * @param dialog The wizard dialog.
	 */
	protected void saveUserInput(WizardPluginDialog dialog) {
		dialog.setWizardProperty("Locale", getSelectedLocale());
	}


/*****************************************************************************/


	/**
	 * Called when the user selects a new locale from the list.
	 *
	 * @param e The selection event.
	 */
	public void valueChanged(ListSelectionEvent e) {
		if (!e.getValueIsAdjusting()) {
			String str = msg.getString(
							"Plugin.Wizard.Common.Locale.Code.Label");
			str = MessageFormat.format(str,
					new Object[] { getSelectedLocale().toString() });
			codeLabel.setText(str);
		}
	}


/*****************************************************************************/
/******************* INNER CLASSES *******************************************/
/*****************************************************************************/


	/**
	 * A locale that is comparable to other locales.
	 */
	static class SortableLocale implements Comparable {

		private Locale locale;

		public SortableLocale(Locale l) {
			this.locale = l;
		}

		public int compareTo(Object o) {
			SortableLocale sl2 = (SortableLocale)o;
			return locale.getDisplayName().
							compareTo(sl2.locale.getDisplayName());
		}

		public boolean equals(Object o2) {
			return (o2 instanceof SortableLocale) &&
				((SortableLocale)o2).locale.getDisplayName().equals(
								locale.getDisplayName());
		}

		public Locale getLocale() {
			return locale;
		}

		public String toString() {
			return locale.getDisplayName();
		}

	}


/*****************************************************************************/

}