rtext.java~2~

具有不同语法高亮的编辑器实例

/*
 * 11/14/2003
 *
 * RText.java - A syntax highlighting programmer's text editor written in Java.
 * Copyright (C) 2003 Robert Futrell
 * [e-mail]
 * www.website.com
 *
 * This file is a part of RText.
 *
 * RText is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or any later version.
 *
 * RText is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */
package org.fife.rtext;

import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.Map;
import java.util.ResourceBundle;
import java.util.StringTokenizer;
import java.util.prefs.Preferences;
import javax.swing.*;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.Element;

import org.fife.RUtilities;
import org.fife.help.HelpDialog;
import org.fife.io.UnicodeReader;
import org.fife.ui.CustomizableToolBar;
import org.fife.ui.OptionsDialog;
import org.fife.ui.SplashScreen;
import org.fife.ui.app.AbstractGUIApplication;
import org.fife.ui.app.AbstractPluggableGUIApplication;
import org.fife.ui.app.ExtendedLookAndFeelInfo;
import org.fife.ui.app.GUIApplicationPreferences;
import org.fife.ui.app.Plugin;
import org.fife.ui.app.ThirdPartyLookAndFeelManager;
import org.fife.ui.rsyntaxtextarea.SyntaxHighlightingColorScheme;
import org.fife.ui.rtextarea.IconGroup;
import org.fife.ui.rtextarea.RTextAreaEditorKit;
import org.fife.ui.rtextfilechooser.RTextFileChooser;
import org.fife.ui.search.FindDialog;

/**
     * An instance of the rtext text editor.  <code>RText</code> is a fully featured
 * programmer's text editor with the following features:
 *
 * <ul>
 *   <li>Syntax highlighting for 15+ languages.</li>
 *   <li>Edit multiple documents simultaneously.</li>
 *   <li>Auto-indent.</li>
     *   <li>Find/Replace/Find in Files, with regular expression functionality.</li>
 *   <li>Printing and Print Preview.</li>
 *   <li>Online help.</li>
 *   <li>Intelligent source browsing via Exhuberant CTags.</li>
 *   <li>Macros.</li>
 *   <li>Code templates.</li>
 *   <li>Many other features.</li>
 * </ul>
 *
 * At the heart of this program is
 * {@link org.fife.ui.rsyntaxtextarea.RSyntaxTextArea}, a fully-featured,
 * syntax highlighting text component.  That's where most of the meat is.
 * All text areas are contained in a subclass of
 * {@link org.fife.rtext.AbstractMainView}, which keeps the state of all of the
 * text areas in synch (fonts used, colors, etc.).  This class (RText) contains
 * an instance of a subclass of {@link org.fife.rtext.AbstractMainView} (which
 * contains all of the text areas) as well as the menu, soure browser, and
 * status bar.
 *
 * @author Robert Futrell
 * @version 0.9.4.0
 */
public class RText
    extends AbstractPluggableGUIApplication
    implements ActionListener, DocumentListener,
    CaretListener, KeyListener,
    PropertyChangeListener,
    RTextActionInfo {

  // Constants specifying the current view style.
  public static final int TABBED_VIEW = 0;
  public static final int SPLIT_PANE_VIEW = 1;
  public static final int MDI_VIEW = 2;

  // Properties fired.
  public static final String ICON_STYLE_PROPERTY = "RText.iconStyle";
  public static final String MAIN_VIEW_STYLE_PROPERTY = "RText.mainViewStyle";

  private Map iconGroupMap;

  private RTextMenuBar menuBar; // Menu bar for rtext.

  public OptionsDialog optionsDialog; // Dialog for displaying miscellaneous options.

  private AbstractMainView mainView; // Area showing all open documents.
  private int mainViewStyle; // Either TABBED_VIEW or SPLIT_PANE_VIEW.

  private RTextFileChooser chooser; // The Open/Save/Save As dialog.

  private HelpDialog helpDialog; // The Help dialog.

  private boolean aboutDialogCreated;

  private SyntaxHighlightingColorScheme colorScheme; // Syntax highlighting colors.

  private IconGroup iconGroup;

  private String workingDirectory; // The directory in which new empty files are placed.

  private String newFileName; // The name for new empty text files.

  private SearchToolBar searchBar;

  private static final String VERSION_STRING = "0.9.4.0.20060113";

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

  /**
   * Creates an instance of the <code>RText</code> editor.
   *
   * @param filesToOpen Array of <code>java.lang.String</code>s containing
   *        the files we want to open initially.
   */
  public RText(String[] filesToOpen) {
    super("rtext", "RText.jar");
    openFiles(filesToOpen);
  }

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

  /**
   * Creates an instance of the <code>RText</code> editor.
   *
   * @param filesToOpen Array of <code>java.lang.String</code>s containing
   *        the files we want to open initially.
   * @param preferences The preferences with which to initialize this RText.
   */
  public RText(String[] filesToOpen, RTextPreferences preferences) {
    super("rtext", "RText.jar", preferences);
    openFiles(filesToOpen);
  }

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

  // What to do when user does something.
  public void actionPerformed(ActionEvent e) {

    String actionCommand = e.getActionCommand();

    // If they choose "Exit" from the File menu.
    if (actionCommand.equals("Exit")) {
      doExit();
    }

    else if (actionCommand.equals("TileVertically")) {
      ( (RTextMDIView) mainView).tileWindowsVertically();
    }

    else if (actionCommand.equals("TileHorizontally")) {
      ( (RTextMDIView) mainView).tileWindowsHorizontally();
    }

    else if (actionCommand.equals("Cascade")) {
      ( (RTextMDIView) mainView).cascadeWindows();
    }

    // Any other event, we don't know how to deal with yet.
    else {
      JOptionPane.showMessageDialog(this,
                                    "Unknown actionCommand: '" + actionCommand +
                                    "'",
                                    getResourceBundle().getString(
          "ErrorDialogTitle"),
                                    JOptionPane.ERROR_MESSAGE);
    }

  }

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

  /**
   * Returns whether or not tabs are emulated with spaces (i.e. "soft" tabs).
   * This simply calls <code>mainView.areTabsEmulated</code>.
   *
   * @return <code>true</code> if tabs are emulated with spaces;
   *         <code>false</code> if they aren't.
   */
  public boolean areTabsEmulated() {
    return mainView.areTabsEmulated();
  }

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

  /**
   * Called when cursor in text editor changes position.
   *
   * @param e The caret event.
   */
  public void caretUpdate(CaretEvent e) {
    // Update row/column information in status field.
    RTextEditorPane currentTextArea = mainView.currentTextArea;
    int caretPosition = currentTextArea.getCaretPosition();
    Element map = currentTextArea.getDocument().getDefaultRootElement();
    int lineNumber = map.getElementIndex(caretPosition);
    int lineStartOffset = map.getElement(lineNumber).getStartOffset();
    ( (StatusBar) getStatusBar()).setRowAndColumn(
        lineNumber + 1, caretPosition - lineStartOffset + 1);
  }

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

  // This function is called whenever a property of the text is changed.
  public void changedUpdate(DocumentEvent e) {
  }

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

  /**
   * Converts all instances of a number of spaces equal to a tab in all open documents
   * into tabs.
   *
   * @see #convertOpenFilesTabsToSpaces
   */
  public void convertOpenFilesSpacesToTabs() {
    mainView.convertOpenFilesSpacesToTabs();
  }

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

  /**
   * Converts all tabs in all open documents into an equivalent number of
   * spaces.
   *
   * @see #convertOpenFilesSpacesToTabs
   */
  public void convertOpenFilesTabsToSpaces() {
    mainView.convertOpenFilesTabsToSpaces();
  }

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

  /**
   * Returns the About dialog for this application.
   *
   * @return The About dialog.
   */
  protected org.fife.ui.AboutDialog createAboutDialog() {
    aboutDialogCreated = true;
    return new org.fife.rtext.AboutDialog(this);
  }

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

  /**
   * Creates the array of actions used by this RText.
   *
   * @param prefs The RText properties for this RText instance.
   */
  protected void createActions(GUIApplicationPreferences prefs) {

    // We use a different resource bundle so we don't needlessly keep
    // all of this stuff in memory in the main RText bundle.
    ResourceBundle msg = ResourceBundle.getBundle(
        "org.fife.rtext.RTextActions");

    URLClassLoader cl = (URLClassLoader)this.getClass().getClassLoader();
    String commonIconPath = "org/fife/rtext/graphics/common_icons/";

    this.setIconImage(new ImageIcon(cl.findResource(
        "org/fife/rtext/graphics/rtexticon.gif")).getImage());

    String temp = msg.getString("NewActionName");
    addAction(NEW_ACTION, new NewAction(temp, null, temp,
                                        new Integer(msg.getString(
        "NewActionMnemonic").charAt(0)),
                                        prefs.getAccelerator(NEW_ACTION), this));

    temp = msg.getString("OpenActionName");
    addAction(OPEN_ACTION, new OpenAction(temp, null, temp,
                                          new Integer(msg.getString(
        "OpenActionMnemonic").charAt(0)),
                                          prefs.getAccelerator(OPEN_ACTION), this));

    temp = msg.getString("ONWActionName");
    addAction(OPEN_NEWWIN_ACTION, new OpenInNewWindowAction(temp, null,
        temp,
        new Integer(msg.getString("ONWActionMnemonic").charAt(0)),
        prefs.getAccelerator(OPEN_NEWWIN_ACTION), this));

    temp = msg.getString("OpenRemoteActionName");
    addAction(OPEN_REMOTE_ACTION, new OpenRemoteAction(temp, null, temp,
        new Integer(msg.getString("OpenRemoteActionMnemonic").charAt(0)),
        null, this));

    temp = msg.getString("SaveActionName");
    addAction(SAVE_ACTION, new SaveAction(temp, null, temp,
                                          new Integer(msg.getString(
        "SaveActionMnemonic").charAt(0)),
                                          prefs.getAccelerator(SAVE_ACTION), this));

    temp = msg.getString("SaveAsActionName");
    addAction(SAVE_AS_ACTION, new SaveAsAction(temp, null, temp,
                                               new Integer(msg.getString(
        "SaveAsActionMnemonic").charAt(0)),
                                               prefs.getAccelerator(
        SAVE_AS_ACTION), this));

    temp = msg.getString("SAWPActionName");
    addAction(SAVE_WEBPAGE_ACTION, new SaveAsWebPageAction(temp, null, temp,
        new Integer(msg.getString("SAWPActionMnemonic").charAt(0)),
        prefs.getAccelerator(SAVE_WEBPAGE_ACTION), this));

    temp = msg.getString("SaveAllActionName");
    addAction(SAVE_ALL_ACTION, new SaveAllAction(temp, null, temp, null,
                                                 prefs.getAccelerator(
        SAVE_ALL_ACTION), this));

    temp = msg.getString("TimeActionName");
    addAction(TIME_DATE_ACTION, new RTextAreaEditorKit.TimeDateAction(temp,
        new ImageIcon(cl.findResource(commonIconPath + "timedate16.gif")),
        temp,
        new Integer(msg.getString("TimeActionMnemonic").charAt(0)),
        prefs.getAccelerator(TIME_DATE_ACTION)));

    temp = msg.getString("LNActionName");
    addAction(LINE_NUMBER_ACTION, new LineNumberAction(temp, null, temp,
        new Integer(msg.getString("LNActionMnemonic").charAt(0)),
        prefs.getAccelerator(LINE_NUMBER_ACTION), this));

    temp = msg.getString("HelpActionName");
    addAction(HELP_ACTION, new HelpAction(temp, null, temp,
                                          new Integer(msg.getString(
        "HelpActionMnemonic").charAt(0)),
                                          prefs.getAccelerator(HELP_ACTION), this));

    temp = msg.getString("AboutActionName");
    addAction(ABOUT_ACTION, new AboutAction(temp, null, temp,
                                            new Integer(msg.getString(
        "AboutActionMnemonic").charAt(0)),
                                            prefs.getAccelerator(ABOUT_ACTION), this));

    temp = msg.getString("OptionsActionName");
    addAction(OPTIONS_ACTION, new OptionsAction(temp, null, temp,
                                                new Integer(msg.getString(
        "OptionsActionMnemonic").charAt(0)),
                                                prefs.getAccelerator(
        OPTIONS_ACTION), this));

    msg = null; // May help with GC.

  }

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

  /**
   * Creates and returns the menu bar used in this application.
   *
   * @param prefs This GUI application's preferences.
   * @return The menu bar.
   */
  protected JMenuBar createMenuBar(
      GUIApplicationPreferences prefs) {