org.fife.rtext.actions.FindNextAction Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of rtext Show documentation

RText is a powerful, cross-platform programmer's text editor written in Java. It is designed to be easy to use, highly customizable and flexible. Part of RText's design is for the source code to be simple, easy to understand, and well documented, so that other programmers can look into its inner-workings and figure out how RText ticks with ease. A good place to start (besides the source code) is the Javadoc for all classes used in the project.

There is a newer version: 2.0.7

Show newest version

/*
 * 11/14/2003
 *
 * FindNextAction.java - Action to search for text again in RText.
 * Copyright (C) 2003 Robert Futrell
 * robert_futrell at users.sourceforge.net
 * http://rtext.fifesoft.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.actions;

import java.awt.event.ActionEvent;
import java.util.ResourceBundle;
import java.util.regex.PatternSyntaxException;
import javax.swing.Icon;
import javax.swing.JOptionPane;

import org.fife.rtext.AbstractMainView;
import org.fife.rtext.RText;
import org.fife.rtext.RTextEditorPane;
import org.fife.rtext.RTextUtilities;
import org.fife.ui.rtextarea.SearchEngine;
import org.fife.ui.search.FindDialog;
import org.fife.ui.search.ReplaceDialog;


/**
 * Action used by an {@link AbstractMainView} to search for text.
 *
 * @author Robert Futrell
 * @version 1.0
 */
class FindNextAction extends FindAction {


	/**
	 * Constructor.
	 *
	 * @param owner The parent RText instance.
	 * @param msg The resource bundle to use for localization.
	 * @param icon The icon associated with the action.
	 */
	public FindNextAction(RText owner, ResourceBundle msg, Icon icon) {
		super(owner, msg, icon, "FindNextAction");
	}


	/**
	 * Callback routine called when user uses this component.
	 *
	 * @param e The action event.
	 */
	public void actionPerformed(ActionEvent e) {

		ensureSearchDialogsCreated();
		RText rtext = (RText)getApplication();
		AbstractMainView mainView = rtext.getMainView();

		// Do this just once for performance.
		FindDialog findDialog = mainView.findDialog;

		// If the current text string is nothing (ie, they haven't searched
		// yet), bring up Find dialog.
		if (mainView.searchStrings.size()==0 && !findDialog.isVisible() &&
				!mainView.replaceDialog.isVisible()) {
			findDialog.setSearchParameters(mainView.searchStrings,
									mainView.searchMatchCase,
									mainView.searchWholeWord,
									mainView.searchRegExpression,
									!mainView.searchingForward,
									mainView.searchMarkAll);
			findDialog.setVisible(true);
			return;
		}

		// Otherwise, repeat the last Find action.
		RTextEditorPane textArea = mainView.getCurrentTextArea();
		String searchString = null;

		// Get the text last searched for.
		if (findDialog.isVisible()) {
			mainView.searchStrings = findDialog.getSearchStrings();
			searchString = findDialog.getSearchString();
		}
		else if (mainView.replaceDialog.isVisible()) {
			ReplaceDialog replaceDialog = mainView.replaceDialog;
			mainView.searchStrings = replaceDialog.getSearchStrings();
			searchString = replaceDialog.getSearchString();
		}
		// else, mainView.searchStrings should already have a value (see
		// above), but we still need to give a value to searchString.
		else {
			searchString = (String)mainView.searchStrings.get(0);
		}

		try {

			// If "mark all" is selected, first mark all occurances in
			// the text area, then do the "find" (so that the next
			// occurance is indeed selected).
			textArea.clearMarkAllHighlights(); // Always remove old stuff.
			if (mainView.searchMarkAll) {
				textArea.markAll(searchString,
								mainView.searchMatchCase,
								mainView.searchWholeWord,
								mainView.searchRegExpression);
			}

			boolean found = SearchEngine.find(textArea, searchString,
								mainView.searchingForward,
								mainView.searchMatchCase,
								mainView.searchWholeWord,
								mainView.searchRegExpression);
			if (!found) {
				searchString = RTextUtilities.escapeForHTML(searchString, null);
				String temp = rtext.getString("CannotFindString", searchString);
				// "null" parent returns focus to previously focused window,
				// whether it be RText, the Find dialog or the Replace dialog.
				JOptionPane.showMessageDialog(null, temp,
							rtext.getString("InfoDialogHeader"),
							JOptionPane.INFORMATION_MESSAGE);
			}

			// If find/replace dialogs aren't up, give text area focus.
			if (!findDialog.isVisible() &&
					!mainView.replaceDialog.isVisible())
				textArea.requestFocusInWindow();

		} catch (PatternSyntaxException pse) {
			// There was a problem with the user's regex search string.
			// Won't usually happen; should be caught earlier.
			JOptionPane.showMessageDialog(rtext,
			"Invalid regular expression:\n" + pse.toString() +
			"\nPlease check your regular expression search string.",
			"Error", JOptionPane.ERROR_MESSAGE);
		}

	}


}