rtextutilities.java~1~

具有不同语法高亮的编辑器实例

/*
 * 03/01/2004
 *
 * RTextUtilities.java - Standard tools used by several pieces of
 *                       RText.
 * Copyright (C) 2004 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.Color;
import java.awt.Cursor;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ResourceBundle;
import java.util.StringTokenizer;
import java.util.regex.Pattern;
import java.util.regex.PatternSyntaxException;
import javax.imageio.ImageIO;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JOptionPane;
import javax.swing.LookAndFeel;
import javax.swing.UIManager;

import org.fife.ui.rtextfilechooser.Utilities;
import org.fife.ui.rtextfilechooser.filters.ExtensionFileFilter;
import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
import org.fife.ui.rtextarea.IconGroup;
import org.fife.ui.rtextfilechooser.FileTypeInfo;
import org.fife.ui.rtextfilechooser.RTextFileChooser;
import org.fife.ui.search.FindInFilesDialog;
import org.fife.util.DynamicIntArray;


/**
 * Collection of tools for use by any of the RText components.
 *
 * @author Robert Futrell
 * @version 1.0
 */
/*
 * FIXME:  This class should not be public, but currently SourceBrowserPlugin
 * uses getRegularExpressionForLine().
 */
public class RTextUtilities {

	/**
	 * The extension at the end of all macro files.
	 */
	public static final String MACRO_EXTENSION		  = ".macro";

	private static final String FILE_FILTERS_FILE	  = "ExtraFileChooserFilters.xml";

	static final String MACRO_TEMPORARY_PROPERTY		  = "RText.temporaryMacroProperty";


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


	/**
	 * Adds an extension file filter to the specified file chooser.
	 *
	 * @param chooser The file chooser.
	 * @param msg The resource bundle.
	 * @param key The key to use in <code>msg</code> for the file filter's
	 *        description.
	 * @param extensions Either a string representing a single extension or
	 *        an array of strings containing multiple extensions.
	 */
	private static final void addFilter(RTextFileChooser chooser,
					ResourceBundle msg, String key, Object extensions) {
		ExtensionFileFilter filter = null;
		if (extensions instanceof String) {
			filter = new ExtensionFileFilter(msg.getString(key),
										(String)extensions);
		}
		else {
			filter = new ExtensionFileFilter(msg.getString(key),
										(String[])extensions);
		}
		chooser.addChoosableFileFilter(filter);
	}


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


	/**
	 * Configures a find-in-files dialog for RText.
	 *
	 * @param fnfd The <code>FindInFilesDialog</code> to configure.
	 */
	public static final void configureFindInFilesDialog(FindInFilesDialog fnfd) {
		fnfd.addInFilesComboBoxFilter("*.asm");
		fnfd.addInFilesComboBoxFilter("*.bat *.cmd");
		fnfd.addInFilesComboBoxFilter("*.c *.cpp *.cxx *.h");
		fnfd.addInFilesComboBoxFilter("*.cs");
		fnfd.addInFilesComboBoxFilter("*.html");
		fnfd.addInFilesComboBoxFilter("*.java");
		fnfd.addInFilesComboBoxFilter("*.js");
		fnfd.addInFilesComboBoxFilter("*.pl *.perl *.pm");
		fnfd.addInFilesComboBoxFilter("*.py");
		fnfd.addInFilesComboBoxFilter("*.sh *.bsh *.csh *.ksh");
		fnfd.addInFilesComboBoxFilter("*.txt");
	}


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


	/**
	 * Creates and initializes a file chooser suitable for RText.
	 *
	 * @param rtext The RText instance that will own this file chooser.
	 * @return A file chooser for RText to use.
	 */
	public static final RTextFileChooser createFileChooser(RText rtext) {

		rtext.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
		RTextFileChooser chooser = null;

		try {

			chooser = new RTextFileChooser();

			ResourceBundle msg = ResourceBundle.getBundle(
									"org.fife.rtext.FileFilters");

			// Add (localized) file filters.
			addFilter(chooser, msg, "AssemblerX86", "asm");
			addFilter(chooser, msg, "CPlusPlus",
					new String[] { "c", "cpp", "cxx", "h" });
			addFilter(chooser, msg, "CSharp",	"cs");
			addFilter(chooser, msg, "CSS", "css");
			addFilter(chooser, msg, "Fortran",
					new String[] { "f", "for", "fort", "f77", "f90" });
			addFilter(chooser, msg, "HTML",
					new String[] { "htm", "html" });
			addFilter(chooser, msg, "Java", "java");
			addFilter(chooser, msg, "JavaScript", "js");
			addFilter(chooser, msg, "Perl",
					new String[] { "pl", "perl", "pm" });
			addFilter(chooser, msg, "PropertiesFiles", "properties");
			addFilter(chooser, msg, "Python", "py");
			addFilter(chooser, msg, "SAS", "sas");
			addFilter(chooser, msg, "SQL", "sql");
			addFilter(chooser, msg, "PlainText", "txt");
			addFilter(chooser, msg, "UnixShell",
					new String[] { "sh", "bsh", "csh", "ksh" });
			addFilter(chooser, msg, "WindowsBatch",
					new String[] { "bat", "cmd" });
			addFilter(chooser, msg, "XML", "xml");

			// Add any user-defined file filters.
			File file = new File(rtext.getInstallLocation(), FILE_FILTERS_FILE);
			try {
				Utilities.addFileFilters(file, chooser);
			} catch (Exception e) {
				e.printStackTrace();
			}

			chooser.setFileFilter(new ExtensionFileFilter(
					msg.getString("AllSupported"),
					new String[] {
						"asm",
						"c", "cpp", "cxx", "h",
						"cs",
						"css",
						"f", "for", "fort", "f77", "f90",
						"htm", "html",
						"java",
						"js",
						"perl", "pl", "pm",
						"properties",
						"py",
						"sas",
						"sql",
						"txt",
						"sh", "bsh", "csh", "ksh",
						"bat", "cmd",
						"xml",
					},
					ExtensionFileFilter.SYSTEM_CASE_CHECK,
					false
			));

			// Have the chooser open initially to RText's working directory.
			chooser.setCurrentDirectory(rtext.getWorkingDirectory());

		} finally {
			// Make sure cursor returns to normal.
			rtext.setCursor(Cursor.getPredefinedCursor(
											Cursor.DEFAULT_CURSOR));
		}

		return chooser;

	}


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


	/**
	 * Enables or disables template usage in RText text areas.
	 *
	 * @param enabled Whether templates should be enabled.
	 * @return <code>true</code> if everything went okay; <code>false</code> if
	 *         the method failed.
	 */
	public static boolean enableTemplates(RText rtext, boolean enabled) {
		boolean old = RSyntaxTextArea.getTemplatesEnabled();
		if (old!=enabled) {
			RSyntaxTextArea.setTemplatesEnabled(enabled);
			if (enabled) {
				boolean rc = RSyntaxTextArea.setTemplateDirectory(
						rtext.getInstallLocation() + "/templates");
				return true;
			}
			else {
				return true;
			}
		}
		return true;
	}


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


	/**
	 * Returns an image from a file in a safe fashion.
	 *
	 * @param fileName The file from which to get the image (must be .jpg,
	 *        .gif or .png).
	 * @return The image contained in the file, or <code>null</code> if the
	 *         image file was invalid.
	 */
	public static Image getImageFromFile(String fileName) {
		BufferedImage image = null;
		try {
			image = ImageIO.read(new URL("file:///" + fileName));
		} catch (MalformedURLException mue) {
			mue.printStackTrace(); // This is our fault.
		} catch (IOException e) {
			// Do nothing.
		}
		return image; // null if there was an exception thrown.