net.sf.jvifm.model.ShortcutsManager.java Source code

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Here is the source code for net.sf.jvifm.model.ShortcutsManager.java

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/*
 * Jvifm - Java vifm (File Manager with vi like key binding)
 *
 * Copyright (C) 2006 wsn <shrek.wang@gmail.com>
 *
 * This program 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
 * (at your option) any later version.
 *
 * This program 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 net.sf.jvifm.model;

import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import net.sf.jvifm.Main;
import net.sf.jvifm.util.HomeLocator;

import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;

public class ShortcutsManager {

    private static ShortcutsManager instance = null;
    private String storePath = null;
    private List<Shortcut> shortcutsList = new ArrayList<Shortcut>();
    private List<ShortcutsListener> listeners = new ArrayList<ShortcutsListener>();

    private ShortcutsManager() {
        init();
    }

    public void addListener(ShortcutsListener listener) {
        this.listeners.add(listener);
    }

    public void removeListener(ShortcutsListener listener) {
        this.listeners.remove(listener);
    }

    public void notifyAddshortcuts(Shortcut shortcut) {
        for (ShortcutsListener listener : listeners) {
            listener.onAddshortcut(shortcut);
        }
    }

    public void notifyChangeshortcuts(Shortcut shortcut) {
        for (ShortcutsListener listener : listeners) {
            listener.onChangeshortcut(shortcut);
        }
    }

    public static ShortcutsManager getInstance() {
        if (instance == null)
            instance = new ShortcutsManager();
        return instance;
    }

    public Iterator<Shortcut> iterator() {
        return shortcutsList.iterator();
    }

    public boolean isShortCut(String cmd) {

        for (Shortcut shortcut : shortcutsList) {
            if (shortcut.getName().equals(cmd))
                return true;
        }
        return false;
    }

    public Shortcut findByName(String cmd) {

        for (Shortcut shortcut : shortcutsList) {
            if (shortcut.getName().equals(cmd))
                return shortcut;
        }
        return null;
    }

    @SuppressWarnings("unchecked")
    public ArrayList getCmdNameList() {
        ArrayList result = new ArrayList();
        for (Iterator it = shortcutsList.iterator(); it.hasNext();) {
            Shortcut command = (Shortcut) it.next();
            result.add(command.getName());
        }
        return result;
    }

    @SuppressWarnings("unchecked")
    public ArrayList getAll() {

        ArrayList result = new ArrayList();
        for (Iterator it = shortcutsList.iterator(); it.hasNext();) {
            Shortcut command = (Shortcut) it.next();
            result.add(command);
        }
        return result;
    }

    public void add(Shortcut command) {

        for (Shortcut tempCmd : shortcutsList) {
            if (tempCmd.getName().equals(command.getName())) {
                Main.fileManager.setStatusInfo("Shortcut '" + command.getName() + "' existed.");
                return;
            }
        }
        shortcutsList.add(command);
        notifyAddshortcuts(command);
        Main.fileManager.setStatusInfo("Added shortcut " + command.getName());
        store();
    }

    public void update() {
        store();
    }

    public void remove(Shortcut shortcut) {
        shortcutsList.remove(shortcut);
        store();
    }

    @SuppressWarnings("unchecked")
    private void init() {

        storePath = HomeLocator.getConfigHome() + File.separator + "commands.xml";
        SAXReader saxReader = new SAXReader();
        File file = new File(storePath);
        Document document = null;

        try {

            if (file.exists()) {
                FileInputStream is = new FileInputStream(file);
                InputStreamReader reader = new InputStreamReader(is, "UTF-8");
                BufferedReader br = new BufferedReader(reader);
                document = saxReader.read(br);

                List elementList = document.selectNodes("//command");

                for (Iterator it = elementList.iterator(); it.hasNext();) {

                    Element shortcutElement = (Element) it.next();
                    String name = shortcutElement.elementText("name");
                    String text = shortcutElement.elementText("text");

                    Shortcut shortcut = new Shortcut();
                    shortcut.setText(text);
                    shortcut.setName(name);

                    shortcutsList.add(shortcut);
                }

                reader.close();
                is.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    public void store() {

        try {

            Document document = DocumentHelper.createDocument();
            Element root = document.addElement("commands");

            for (Shortcut shortcut : shortcutsList) {

                Element shortcutElement = root.addElement("command");

                shortcutElement.addElement("name").addText(shortcut.getName());
                shortcutElement.addElement("text").addText(shortcut.getText());

            }

            FileOutputStream fos = new FileOutputStream(storePath);
            OutputFormat outformat = OutputFormat.createPrettyPrint();

            outformat.setEncoding("UTF-8");
            BufferedOutputStream out = new BufferedOutputStream(fos);
            XMLWriter writer = new XMLWriter(out, outformat);

            writer.write(document);
            writer.flush();
            writer.close();
            fos.close();

        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}